//"use strict"; // An implementation of a libc for the web. Basically, implementations of // the various standard C libraries, that can be called from compiled code, // and work using the actual JavaScript environment. // // We search the Library object when there is an external function. If the // entry in the Library is a function, we insert it. If it is a string, we // do another lookup in the library (a simple way to write a function once, // if it can be called by different names). We also allow dependencies, // using __deps. Initialization code to be run after allocating all // global constants can be defined by __postset. // // Note that the full function name will be '_' + the name in the Library // object. For convenience, the short name appears here. Note that if you add a // new function with an '_', it will not be found. // Memory allocated during startup, in postsets, should only be ALLOC_STATIC LibraryManager.library = { // keep this low in memory, because we flatten arrays with them in them stdin: 'allocate(1, "i32*", ALLOC_STATIC)', stdout: 'allocate(1, "i32*", ALLOC_STATIC)', stderr: 'allocate(1, "i32*", ALLOC_STATIC)', _impure_ptr: 'allocate(1, "i32*", ALLOC_STATIC)', __dso_handle: 'allocate(1, "i32*", ALLOC_STATIC)', // ========================================================================== // dirent.h // ========================================================================== opendir__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'open'], opendir: function(dirname) { // DIR *opendir(const char *dirname); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/opendir.html // NOTE: Calculating absolute path redundantly since we need to associate it // with the opened stream. var path = Pointer_stringify(dirname); if (!path) { ___setErrNo(ERRNO_CODES.ENOENT); return 0; } var node; try { var lookup = FS.lookupPath(path, { follow: true }); node = lookup.node; } catch (e) { FS.handleFSError(e); return 0; } if (!FS.isDir(node.mode)) { ___setErrNo(ERRNO_CODES.ENOTDIR); return 0; } var fd = _open(dirname, {{{ cDefine('O_RDONLY') }}}, allocate([0, 0, 0, 0], 'i32', ALLOC_STACK)); return fd === -1 ? 0 : FS.getPtrForStream(FS.getStream(fd)); }, closedir__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'close', 'fileno'], closedir: function(dirp) { // int closedir(DIR *dirp); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/closedir.html var fd = _fileno(dirp); return _close(fd); }, telldir__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], telldir: function(dirp) { // long int telldir(DIR *dirp); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/telldir.html var stream = FS.getStreamFromPtr(dirp); if (!stream || !FS.isDir(stream.node.mode)) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } return stream.position; }, seekdir__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'lseek', 'fileno'], seekdir: function(dirp, loc) { // void seekdir(DIR *dirp, long int loc); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/seekdir.html var fd = _fileno(dirp); _lseek(fd, loc, {{{ cDefine('SEEK_SET') }}}); }, rewinddir__deps: ['seekdir'], rewinddir: function(dirp) { // void rewinddir(DIR *dirp); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/rewinddir.html _seekdir(dirp, 0); }, readdir_r__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], readdir_r: function(dirp, entry, result) { // int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/readdir_r.html var stream = FS.getStreamFromPtr(dirp); if (!stream) { return ___setErrNo(ERRNO_CODES.EBADF); } var entries; try { entries = FS.readdir(stream.path); } catch (e) { return FS.handleFSError(e); } if (stream.position < 0 || stream.position >= entries.length) { {{{ makeSetValue('result', '0', '0', 'i8*') }}}; return 0; } var id; var type; var name = entries[stream.position]; var offset = stream.position + 1; if (!name.indexOf('.')) { id = 1; type = 4; } else { var child = FS.lookupNode(stream.node, name); id = child.id; type = FS.isChrdev(child.mode) ? 2 : // DT_CHR, character device. FS.isDir(child.mode) ? 4 : // DT_DIR, directory. FS.isLink(child.mode) ? 10 : // DT_LNK, symbolic link. 8; // DT_REG, regular file. } {{{ makeSetValue('entry', C_STRUCTS.dirent.d_ino, 'id', 'i32') }}}; {{{ makeSetValue('entry', C_STRUCTS.dirent.d_off, 'offset', 'i32') }}}; {{{ makeSetValue('entry', C_STRUCTS.dirent.d_reclen, 'name.length + 1', 'i32') }}}; for (var i = 0; i < name.length; i++) { {{{ makeSetValue('entry + ' + C_STRUCTS.dirent.d_name, 'i', 'name.charCodeAt(i)', 'i8') }}}; } {{{ makeSetValue('entry + ' + C_STRUCTS.dirent.d_name, 'i', '0', 'i8') }}}; {{{ makeSetValue('entry', C_STRUCTS.dirent.d_type, 'type', 'i8') }}}; {{{ makeSetValue('result', '0', 'entry', 'i8*') }}}; stream.position++; return 0; }, readdir__deps: ['readdir_r', '__setErrNo', '$ERRNO_CODES', 'malloc'], readdir: function(dirp) { // struct dirent *readdir(DIR *dirp); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/readdir_r.html var stream = FS.getStreamFromPtr(dirp); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return 0; } // TODO Is it supposed to be safe to execute multiple readdirs? if (!_readdir.entry) _readdir.entry = _malloc({{{ C_STRUCTS.dirent.__size__ }}}); if (!_readdir.result) _readdir.result = _malloc(4); var err = _readdir_r(dirp, _readdir.entry, _readdir.result); if (err) { ___setErrNo(err); return 0; } return {{{ makeGetValue(0, '_readdir.result', 'i8*') }}}; }, // ========================================================================== // utime.h // ========================================================================== utime__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], utime: function(path, times) { // int utime(const char *path, const struct utimbuf *times); // http://pubs.opengroup.org/onlinepubs/009695399/basedefs/utime.h.html var time; if (times) { // NOTE: We don't keep track of access timestamps. var offset = {{{ C_STRUCTS.utimbuf.modtime }}}; time = {{{ makeGetValue('times', 'offset', 'i32') }}}; time *= 1000; } else { time = Date.now(); } path = Pointer_stringify(path); try { FS.utime(path, time, time); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, utimes: function() { throw 'utimes not implemented' }, // ========================================================================== // libgen.h // ========================================================================== __libgenSplitName: function(path) { if (path === 0 || {{{ makeGetValue('path', 0, 'i8') }}} === 0) { // Null or empty results in '.'. var me = ___libgenSplitName; if (!me.ret) { me.ret = allocate([{{{ charCode('.') }}}, 0], 'i8', ALLOC_NORMAL); } return [me.ret, -1]; } else { var slash = {{{ charCode('/') }}}; var allSlashes = true; var slashPositions = []; for (var i = 0; {{{ makeGetValue('path', 'i', 'i8') }}} !== 0; i++) { if ({{{ makeGetValue('path', 'i', 'i8') }}} === slash) { slashPositions.push(i); } else { allSlashes = false; } } var length = i; if (allSlashes) { // All slashes result in a single slash. {{{ makeSetValue('path', '1', '0', 'i8') }}}; return [path, -1]; } else { // Strip trailing slashes. while (slashPositions.length && slashPositions[slashPositions.length - 1] == length - 1) { {{{ makeSetValue('path', 'slashPositions.pop(i)', '0', 'i8') }}}; length--; } return [path, slashPositions.pop()]; } } }, basename__deps: ['__libgenSplitName'], basename: function(path) { // char *basename(char *path); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/basename.html var result = ___libgenSplitName(path); return result[0] + result[1] + 1; }, dirname__deps: ['__libgenSplitName'], dirname: function(path) { // char *dirname(char *path); // http://pubs.opengroup.org/onlinepubs/007908799/xsh/dirname.html var result = ___libgenSplitName(path); if (result[1] == 0) { {{{ makeSetValue('result[0]', 1, '0', 'i8') }}}; } else if (result[1] !== -1) { {{{ makeSetValue('result[0]', 'result[1]', '0', 'i8') }}}; } return result[0]; }, // ========================================================================== // sys/stat.h // ========================================================================== stat__deps: ['$FS'], stat: function(path, buf, dontResolveLastLink) { // http://pubs.opengroup.org/onlinepubs/7908799/xsh/stat.html // int stat(const char *path, struct stat *buf); // NOTE: dontResolveLastLink is a shortcut for lstat(). It should never be // used in client code. path = typeof path !== 'string' ? Pointer_stringify(path) : path; try { var stat = dontResolveLastLink ? FS.lstat(path) : FS.stat(path); {{{ makeSetValue('buf', C_STRUCTS.stat.st_dev, 'stat.dev', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.__st_dev_padding, '0', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.__st_ino_truncated, 'stat.ino', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_mode, 'stat.mode', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_nlink, 'stat.nlink', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_uid, 'stat.uid', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_gid, 'stat.gid', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_rdev, 'stat.rdev', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.__st_rdev_padding, '0', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_size, 'stat.size', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_blksize, '4096', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_blocks, 'stat.blocks', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_atim.tv_sec, 'Math.floor(stat.atime.getTime() / 1000)', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_atim.tv_nsec, '0', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_mtim.tv_sec, 'Math.floor(stat.mtime.getTime() / 1000)', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_mtim.tv_nsec, '0', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_ctim.tv_sec, 'Math.floor(stat.ctime.getTime() / 1000)', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_ctim.tv_nsec, '0', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.stat.st_ino, 'stat.ino', 'i32') }}}; return 0; } catch (e) { FS.handleFSError(e); return -1; } }, lstat__deps: ['stat'], lstat: function(path, buf) { // int lstat(const char *path, struct stat *buf); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/lstat.html return _stat(path, buf, true); }, fstat__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'stat'], fstat: function(fildes, buf) { // int fstat(int fildes, struct stat *buf); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/fstat.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } return _stat(stream.path, buf); }, mknod__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], mknod: function(path, mode, dev) { // int mknod(const char *path, mode_t mode, dev_t dev); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/mknod.html path = Pointer_stringify(path); // we don't want this in the JS API as the JS API // uses mknod to create all nodes. switch (mode & {{{ cDefine('S_IFMT') }}}) { case {{{ cDefine('S_IFREG') }}}: case {{{ cDefine('S_IFCHR') }}}: case {{{ cDefine('S_IFBLK') }}}: case {{{ cDefine('S_IFIFO') }}}: case {{{ cDefine('S_IFSOCK') }}}: break; default: ___setErrNo(ERRNO_CODES.EINVAL); return -1; } try { FS.mknod(path, mode, dev); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, mkdir__deps: ['mknod'], mkdir: function(path, mode) { // int mkdir(const char *path, mode_t mode); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/mkdir.html path = Pointer_stringify(path); // remove a trailing slash, if one - /a/b/ has basename of '', but // we want to create b in the context of this function if (path[path.length-1] === '/') path = path.substr(0, path.length-1); try { FS.mkdir(path, mode, 0); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, mkfifo__deps: ['__setErrNo', '$ERRNO_CODES'], mkfifo: function(path, mode) { // int mkfifo(const char *path, mode_t mode); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/mkfifo.html // NOTE: We support running only a single process, and named pipes require // blocking, which we can't provide. The error code is not very // accurate, but it's the closest among those allowed in the standard // and unlikely to result in retries. ___setErrNo(ERRNO_CODES.EROFS); return -1; }, chmod__deps: ['$FS', '__setErrNo'], chmod: function(path, mode, dontResolveLastLink) { // int chmod(const char *path, mode_t mode); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/chmod.html // NOTE: dontResolveLastLink is a shortcut for lchmod(). It should never be // used in client code. path = typeof path !== 'string' ? Pointer_stringify(path) : path; try { FS.chmod(path, mode); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, fchmod__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'chmod'], fchmod: function(fildes, mode) { // int fchmod(int fildes, mode_t mode); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/fchmod.html try { FS.fchmod(fildes, mode); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, lchmod__deps: ['chmod'], lchmod: function(path, mode) { path = Pointer_stringify(path); try { FS.lchmod(path, mode); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, umask__deps: ['$FS'], umask: function(newMask) { // mode_t umask(mode_t cmask); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/umask.html // NOTE: This value isn't actually used for anything. if (_umask.cmask === undefined) _umask.cmask = 0x1FF; // S_IRWXU | S_IRWXG | S_IRWXO. var oldMask = _umask.cmask; _umask.cmask = newMask; return oldMask; }, // ========================================================================== // sys/statvfs.h // ========================================================================== statvfs__deps: ['$FS'], statvfs: function(path, buf) { // http://pubs.opengroup.org/onlinepubs/009695399/functions/statvfs.html // int statvfs(const char *restrict path, struct statvfs *restrict buf); // NOTE: None of the constants here are true. We're just returning safe and // sane values. {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_bsize, '4096', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_frsize, '4096', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_blocks, '1000000', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_bfree, '500000', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_bavail, '500000', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_files, 'FS.nextInode', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_ffree, '1000000', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_favail, '1000000', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_fsid, '42', 'i32') }}}; {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_flag, '2', 'i32') }}}; // ST_NOSUID {{{ makeSetValue('buf', C_STRUCTS.statvfs.f_namemax, '255', 'i32') }}}; return 0; }, fstatvfs__deps: ['statvfs'], fstatvfs: function(fildes, buf) { // int fstatvfs(int fildes, struct statvfs *buf); // http://pubs.opengroup.org/onlinepubs/009604499/functions/statvfs.html return _statvfs(0, buf); }, // ========================================================================== // fcntl.h // ========================================================================== open__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], open: function(path, oflag, varargs) { // int open(const char *path, int oflag, ...); // http://pubs.opengroup.org/onlinepubs/009695399/functions/open.html var mode = {{{ makeGetValue('varargs', 0, 'i32') }}}; path = Pointer_stringify(path); try { var stream = FS.open(path, oflag, mode); return stream.fd; } catch (e) { FS.handleFSError(e); return -1; } }, creat__deps: ['open'], creat: function(path, mode) { // int creat(const char *path, mode_t mode); // http://pubs.opengroup.org/onlinepubs/009695399/functions/creat.html return _open(path, {{{ cDefine('O_WRONLY') }}} | {{{ cDefine('O_CREAT') }}} | {{{ cDefine('O_TRUNC') }}}, allocate([mode, 0, 0, 0], 'i32', ALLOC_STACK)); }, mktemp: function(template) { if (!_mktemp.counter) _mktemp.counter = 0; var c = (_mktemp.counter++).toString(); var rep = 'XXXXXX'; while (c.length < rep.length) c = '0' + c; writeArrayToMemory(intArrayFromString(c), template + Pointer_stringify(template).indexOf(rep)); return template; }, mkstemp__deps: ['creat', 'mktemp'], mkstemp: function(template) { return _creat(_mktemp(template), 0600); }, mkdtemp__deps: ['mktemp', 'mkdir'], mkdtemp: function(template) { template = _mktemp(template); return (_mkdir(template, 0700) === 0) ? template : 0; }, fcntl__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], fcntl: function(fildes, cmd, varargs, dup2) { // int fcntl(int fildes, int cmd, ...); // http://pubs.opengroup.org/onlinepubs/009695399/functions/fcntl.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } switch (cmd) { case {{{ cDefine('F_DUPFD') }}}: var arg = {{{ makeGetValue('varargs', 0, 'i32') }}}; if (arg < 0) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } var newStream; try { newStream = FS.open(stream.path, stream.flags, 0, arg); } catch (e) { FS.handleFSError(e); return -1; } return newStream.fd; case {{{ cDefine('F_GETFD') }}}: case {{{ cDefine('F_SETFD') }}}: return 0; // FD_CLOEXEC makes no sense for a single process. case {{{ cDefine('F_GETFL') }}}: return stream.flags; case {{{ cDefine('F_SETFL') }}}: var arg = {{{ makeGetValue('varargs', 0, 'i32') }}}; stream.flags |= arg; return 0; case {{{ cDefine('F_GETLK') }}}: case {{{ cDefine('F_GETLK64') }}}: var arg = {{{ makeGetValue('varargs', 0, 'i32') }}}; var offset = {{{ C_STRUCTS.flock.l_type }}}; // We're always unlocked. {{{ makeSetValue('arg', 'offset', cDefine('F_UNLCK'), 'i16') }}}; return 0; case {{{ cDefine('F_SETLK') }}}: case {{{ cDefine('F_SETLKW') }}}: case {{{ cDefine('F_SETLK64') }}}: case {{{ cDefine('F_SETLKW64') }}}: // Pretend that the locking is successful. return 0; case {{{ cDefine('F_SETOWN') }}}: case {{{ cDefine('F_GETOWN') }}}: // These are for sockets. We don't have them fully implemented yet. ___setErrNo(ERRNO_CODES.EINVAL); return -1; default: ___setErrNo(ERRNO_CODES.EINVAL); return -1; } // Should never be reached. Only to silence strict warnings. return -1; }, posix_fadvise: function(fd, offset, len, advice) { // int posix_fadvise(int fd, off_t offset, off_t len, int advice); // http://pubs.opengroup.org/onlinepubs/009695399/functions/posix_fadvise.html // Advise as much as you wish. We don't care. return 0; }, posix_madvise: function(){ return 0 }, // ditto as fadvise posix_fallocate__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], posix_fallocate: function(fd, offset, len) { // int posix_fallocate(int fd, off_t offset, off_t len); // http://pubs.opengroup.org/onlinepubs/009695399/functions/posix_fallocate.html var stream = FS.getStream(fd); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { FS.allocate(stream, offset, len); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, // ========================================================================== // sys/file.h // ========================================================================== flock: function(fd, operation) { // int flock(int fd, int operation); // Pretend to succeed return 0; }, // ========================================================================== // nl_types.h // ========================================================================== catopen: function(name, oflag) { // nl_catd catopen (const char *name, int oflag) return -1; }, catgets: function(catd, set_id, msg_id, s) { // char *catgets (nl_catd catd, int set_id, int msg_id, const char *s) return s; }, catclose: function(catd) { // int catclose (nl_catd catd) return 0; }, // ========================================================================== // poll.h // ========================================================================== __DEFAULT_POLLMASK: {{{ cDefine('POLLIN') }}} | {{{ cDefine('POLLOUT') }}}, poll__deps: ['$FS', '__DEFAULT_POLLMASK'], poll: function(fds, nfds, timeout) { // int poll(struct pollfd fds[], nfds_t nfds, int timeout); // http://pubs.opengroup.org/onlinepubs/009695399/functions/poll.html var nonzero = 0; for (var i = 0; i < nfds; i++) { var pollfd = fds + {{{ C_STRUCTS.pollfd.__size__ }}} * i; var fd = {{{ makeGetValue('pollfd', C_STRUCTS.pollfd.fd, 'i32') }}}; var events = {{{ makeGetValue('pollfd', C_STRUCTS.pollfd.events, 'i16') }}}; var mask = {{{ cDefine('POLLNVAL') }}}; var stream = FS.getStream(fd); if (stream) { mask = ___DEFAULT_POLLMASK; if (stream.stream_ops.poll) { mask = stream.stream_ops.poll(stream); } } mask &= events | {{{ cDefine('POLLERR') }}} | {{{ cDefine('POLLHUP') }}}; if (mask) nonzero++; {{{ makeSetValue('pollfd', C_STRUCTS.pollfd.revents, 'mask', 'i16') }}}; } return nonzero; }, // ========================================================================== // unistd.h // ========================================================================== access__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], access: function(path, amode) { // int access(const char *path, int amode); // http://pubs.opengroup.org/onlinepubs/000095399/functions/access.html path = Pointer_stringify(path); if (amode & ~{{{ cDefine('S_IRWXO') }}}) { // need a valid mode ___setErrNo(ERRNO_CODES.EINVAL); return -1; } var node; try { var lookup = FS.lookupPath(path, { follow: true }); node = lookup.node; } catch (e) { FS.handleFSError(e); return -1; } var perms = ''; if (amode & {{{ cDefine('R_OK') }}}) perms += 'r'; if (amode & {{{ cDefine('W_OK') }}}) perms += 'w'; if (amode & {{{ cDefine('X_OK') }}}) perms += 'x'; if (perms /* otherwise, they've just passed F_OK */ && FS.nodePermissions(node, perms)) { ___setErrNo(ERRNO_CODES.EACCES); return -1; } return 0; }, chdir__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], chdir: function(path) { // int chdir(const char *path); // http://pubs.opengroup.org/onlinepubs/000095399/functions/chdir.html // NOTE: The path argument may be a string, to simplify fchdir(). if (typeof path !== 'string') path = Pointer_stringify(path); try { FS.chdir(path); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, chown__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], chown: function(path, owner, group, dontResolveLastLink) { // int chown(const char *path, uid_t owner, gid_t group); // http://pubs.opengroup.org/onlinepubs/000095399/functions/chown.html // We don't support multiple users, so changing ownership makes no sense. // NOTE: The path argument may be a string, to simplify fchown(). // NOTE: dontResolveLastLink is a shortcut for lchown(). It should never be // used in client code. if (typeof path !== 'string') path = Pointer_stringify(path); try { FS.chown(path, owner, group); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, chroot__deps: ['__setErrNo', '$ERRNO_CODES'], chroot: function(path) { // int chroot(const char *path); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/chroot.html ___setErrNo(ERRNO_CODES.EACCES); return -1; }, close__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], close: function(fildes) { // int close(int fildes); // http://pubs.opengroup.org/onlinepubs/000095399/functions/close.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { FS.close(stream); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, dup__deps: ['fcntl'], dup: function(fildes) { // int dup(int fildes); // http://pubs.opengroup.org/onlinepubs/000095399/functions/dup.html return _fcntl(fildes, 0, allocate([0, 0, 0, 0], 'i32', ALLOC_STACK)); // F_DUPFD. }, dup2__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'fcntl', 'close'], dup2: function(fildes, fildes2) { // int dup2(int fildes, int fildes2); // http://pubs.opengroup.org/onlinepubs/000095399/functions/dup.html var stream = FS.getStream(fildes); if (fildes2 < 0) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } else if (fildes === fildes2 && stream) { return fildes; } else { _close(fildes2); try { var stream2 = FS.open(stream.path, stream.flags, 0, fildes2, fildes2); return stream2.fd; } catch (e) { FS.handleFSError(e); return -1; } } }, fchown__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'chown'], fchown: function(fildes, owner, group) { // int fchown(int fildes, uid_t owner, gid_t group); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fchown.html try { FS.fchown(fildes, owner, group); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, fchdir__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'chdir'], fchdir: function(fildes) { // int fchdir(int fildes); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fchdir.html var stream = FS.getStream(fildes); if (stream) { return _chdir(stream.path); } else { ___setErrNo(ERRNO_CODES.EBADF); return -1; } }, ctermid__deps: ['strcpy'], ctermid: function(s) { // char *ctermid(char *s); // http://pubs.opengroup.org/onlinepubs/000095399/functions/ctermid.html if (!_ctermid.ret) { var arr = intArrayFromString('/dev/tty'); _ctermid.ret = allocate(arr, 'i8', ALLOC_NORMAL); } return s ? _strcpy(s, _ctermid.ret) : _ctermid.ret; }, crypt: function(key, salt) { // char *(const char *, const char *); // http://pubs.opengroup.org/onlinepubs/000095399/functions/crypt.html // TODO: Implement (probably compile from C). ___setErrNo(ERRNO_CODES.ENOSYS); #if ASSERTIONS Runtime.warnOnce('crypt() returning an error as we do not support it'); #endif return 0; }, encrypt: function(block, edflag) { // void encrypt(char block[64], int edflag); // http://pubs.opengroup.org/onlinepubs/000095399/functions/encrypt.html // TODO: Implement (probably compile from C). #if ASSERTIONS Runtime.warnOnce('encrypt() returning an error as we do not support it'); #endif ___setErrNo(ERRNO_CODES.ENOSYS); }, fpathconf__deps: ['__setErrNo', '$ERRNO_CODES'], fpathconf: function(fildes, name) { // long fpathconf(int fildes, int name); // http://pubs.opengroup.org/onlinepubs/000095399/functions/encrypt.html // NOTE: The first parameter is ignored, so pathconf == fpathconf. // The constants here aren't real values. Just mimicking glibc. switch (name) { case {{{ cDefine('_PC_LINK_MAX') }}}: return 32000; case {{{ cDefine('_PC_MAX_CANON') }}}: case {{{ cDefine('_PC_MAX_INPUT') }}}: case {{{ cDefine('_PC_NAME_MAX') }}}: return 255; case {{{ cDefine('_PC_PATH_MAX') }}}: case {{{ cDefine('_PC_PIPE_BUF') }}}: case {{{ cDefine('_PC_REC_MIN_XFER_SIZE') }}}: case {{{ cDefine('_PC_REC_XFER_ALIGN') }}}: case {{{ cDefine('_PC_ALLOC_SIZE_MIN') }}}: return 4096; case {{{ cDefine('_PC_CHOWN_RESTRICTED') }}}: case {{{ cDefine('_PC_NO_TRUNC') }}}: case {{{ cDefine('_PC_2_SYMLINKS') }}}: return 1; case {{{ cDefine('_PC_VDISABLE') }}}: return 0; case {{{ cDefine('_PC_SYNC_IO') }}}: case {{{ cDefine('_PC_ASYNC_IO') }}}: case {{{ cDefine('_PC_PRIO_IO') }}}: case {{{ cDefine('_PC_SOCK_MAXBUF') }}}: case {{{ cDefine('_PC_REC_INCR_XFER_SIZE') }}}: case {{{ cDefine('_PC_REC_MAX_XFER_SIZE') }}}: case {{{ cDefine('_PC_SYMLINK_MAX') }}}: return -1; case {{{ cDefine('_PC_FILESIZEBITS') }}}: return 64; } ___setErrNo(ERRNO_CODES.EINVAL); return -1; }, pathconf: 'fpathconf', fsync__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], fsync: function(fildes) { // int fsync(int fildes); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fsync.html var stream = FS.getStream(fildes); if (stream) { // We write directly to the file system, so there's nothing to do here. return 0; } else { ___setErrNo(ERRNO_CODES.EBADF); return -1; } }, fdatasync: 'fsync', truncate__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], truncate: function(path, length) { // int truncate(const char *path, off_t length); // http://pubs.opengroup.org/onlinepubs/000095399/functions/truncate.html // NOTE: The path argument may be a string, to simplify ftruncate(). if (typeof path !== 'string') path = Pointer_stringify(path); try { FS.truncate(path, length); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, ftruncate__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'truncate'], ftruncate: function(fildes, length) { // int ftruncate(int fildes, off_t length); // http://pubs.opengroup.org/onlinepubs/000095399/functions/ftruncate.html try { FS.ftruncate(fildes, length); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, getcwd__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], getcwd: function(buf, size) { // char *getcwd(char *buf, size_t size); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getcwd.html if (size == 0) { ___setErrNo(ERRNO_CODES.EINVAL); return 0; } var cwd = FS.cwd(); if (size < cwd.length + 1) { ___setErrNo(ERRNO_CODES.ERANGE); return 0; } else { writeAsciiToMemory(cwd, buf); return buf; } }, getwd__deps: ['getcwd'], getwd: function(path_name) { // char *getwd(char *path_name); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getwd.html return _getcwd(path_name, 4096); // PATH_MAX. }, isatty__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], isatty: function(fildes) { // int isatty(int fildes); // http://pubs.opengroup.org/onlinepubs/000095399/functions/isatty.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return 0; } // HACK - implement tcgetattr if (!stream.tty) { ___setErrNo(ERRNO_CODES.ENOTTY); return 0; } return 1; }, lchown__deps: ['chown'], lchown: function(path, owner, group) { // int lchown(const char *path, uid_t owner, gid_t group); // http://pubs.opengroup.org/onlinepubs/000095399/functions/lchown.html return _chown(path, owner, group, true); }, link__deps: ['__setErrNo', '$ERRNO_CODES'], link: function(path1, path2) { // int link(const char *path1, const char *path2); // http://pubs.opengroup.org/onlinepubs/000095399/functions/link.html // We don't support hard links. ___setErrNo(ERRNO_CODES.EMLINK); return -1; }, lockf__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], lockf: function(fildes, func, size) { // int lockf(int fildes, int function, off_t size); // http://pubs.opengroup.org/onlinepubs/000095399/functions/lockf.html var stream = FS.getStream(fildes); if (stream) { // Pretend whatever locking or unlocking operation succeeded. Locking does // not make much sense, since we have a single process/thread. return 0; } else { ___setErrNo(ERRNO_CODES.EBADF); return -1; } }, lseek__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], lseek: function(fildes, offset, whence) { // off_t lseek(int fildes, off_t offset, int whence); // http://pubs.opengroup.org/onlinepubs/000095399/functions/lseek.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { return FS.llseek(stream, offset, whence); } catch (e) { FS.handleFSError(e); return -1; } }, pipe__deps: ['__setErrNo', '$ERRNO_CODES'], pipe: function(fildes) { // int pipe(int fildes[2]); // http://pubs.opengroup.org/onlinepubs/000095399/functions/pipe.html // It is possible to implement this using two device streams, but pipes make // little sense in a single-threaded environment, so we do not support them. ___setErrNo(ERRNO_CODES.ENOSYS); #if ASSERTIONS Runtime.warnOnce('pipe() returning an error as we do not support them'); #endif return -1; }, pread__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], pread: function(fildes, buf, nbyte, offset) { // ssize_t pread(int fildes, void *buf, size_t nbyte, off_t offset); // http://pubs.opengroup.org/onlinepubs/000095399/functions/read.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { var slab = {{{ makeGetSlabs('buf', 'i8', true) }}}; #if SAFE_HEAP #if USE_TYPED_ARRAYS == 0 SAFE_HEAP_FILL_HISTORY(buf, buf+nbyte, 'i8'); // VFS does not use makeSetValues, so we need to do it manually #endif #endif return FS.read(stream, slab, buf, nbyte, offset); } catch (e) { FS.handleFSError(e); return -1; } }, read__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'recv', 'pread'], read: function(fildes, buf, nbyte) { // ssize_t read(int fildes, void *buf, size_t nbyte); // http://pubs.opengroup.org/onlinepubs/000095399/functions/read.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } #if SOCKET_WEBRTC if (stream && ('socket' in stream)) { return _recv(fildes, buf, nbyte, 0); } #endif try { var slab = {{{ makeGetSlabs('buf', 'i8', true) }}}; #if SAFE_HEAP #if USE_TYPED_ARRAYS == 0 SAFE_HEAP_FILL_HISTORY(buf, buf+nbyte, 'i8'); // VFS does not use makeSetValues, so we need to do it manually #endif #endif return FS.read(stream, slab, buf, nbyte); } catch (e) { FS.handleFSError(e); return -1; } }, sync: function() { // void sync(void); // http://pubs.opengroup.org/onlinepubs/000095399/functions/sync.html // All our writing is already synchronized. This is a no-op. }, rmdir__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], rmdir: function(path) { // int rmdir(const char *path); // http://pubs.opengroup.org/onlinepubs/000095399/functions/rmdir.html path = Pointer_stringify(path); try { FS.rmdir(path); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, unlink__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], unlink: function(path) { // int unlink(const char *path); // http://pubs.opengroup.org/onlinepubs/000095399/functions/unlink.html path = Pointer_stringify(path); try { FS.unlink(path); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, ttyname__deps: ['ttyname_r', 'malloc'], ttyname: function(fildes) { // char *ttyname(int fildes); // http://pubs.opengroup.org/onlinepubs/000095399/functions/ttyname.html if (!_ttyname.ret) _ttyname.ret = _malloc(256); return _ttyname_r(fildes, _ttyname.ret, 256) ? 0 : _ttyname.ret; }, ttyname_r__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'isatty'], ttyname_r: function(fildes, name, namesize) { // int ttyname_r(int fildes, char *name, size_t namesize); // http://pubs.opengroup.org/onlinepubs/000095399/functions/ttyname.html var stream = FS.getStream(fildes); var ttyname = '/dev/tty'; if (!stream) { return ___setErrNo(ERRNO_CODES.EBADF); } else if (!_isatty(fildes)) { return ___setErrNo(ERRNO_CODES.ENOTTY); } else if (namesize < ttyname.length + 1) { return ___setErrNo(ERRNO_CODES.ERANGE); } writeStringToMemory(ttyname, name); return 0; }, symlink__deps: ['$FS', '$PATH', '__setErrNo', '$ERRNO_CODES'], symlink: function(path1, path2) { // int symlink(const char *path1, const char *path2); // http://pubs.opengroup.org/onlinepubs/000095399/functions/symlink.html path1 = Pointer_stringify(path1); path2 = Pointer_stringify(path2); try { FS.symlink(path1, path2); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, readlink__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], readlink: function(path, buf, bufsize) { // ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize); // http://pubs.opengroup.org/onlinepubs/000095399/functions/readlink.html path = Pointer_stringify(path); var str; try { str = FS.readlink(path); } catch (e) { FS.handleFSError(e); return -1; } str = str.slice(0, Math.max(0, bufsize - 1)); writeStringToMemory(str, buf, true); return str.length; }, pwrite__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], pwrite: function(fildes, buf, nbyte, offset) { // ssize_t pwrite(int fildes, const void *buf, size_t nbyte, off_t offset); // http://pubs.opengroup.org/onlinepubs/000095399/functions/write.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { var slab = {{{ makeGetSlabs('buf', 'i8', true) }}}; #if SAFE_HEAP #if USE_TYPED_ARRAYS == 0 SAFE_HEAP_FILL_HISTORY(buf, buf+nbyte, 'i8'); // VFS does not use makeSetValues, so we need to do it manually #endif #endif return FS.write(stream, slab, buf, nbyte, offset); } catch (e) { FS.handleFSError(e); return -1; } }, write__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'send', 'pwrite'], write: function(fildes, buf, nbyte) { // ssize_t write(int fildes, const void *buf, size_t nbyte); // http://pubs.opengroup.org/onlinepubs/000095399/functions/write.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } #if SOCKET_WEBRTC if (stream && ('socket' in stream)) { return _send(fildes, buf, nbyte, 0); } #endif try { var slab = {{{ makeGetSlabs('buf', 'i8', true) }}}; #if SAFE_HEAP #if USE_TYPED_ARRAYS == 0 SAFE_HEAP_FILL_HISTORY(buf, buf+nbyte, 'i8'); // VFS does not use makeSetValues, so we need to do it manually #endif #endif return FS.write(stream, slab, buf, nbyte); } catch (e) { FS.handleFSError(e); return -1; } }, alarm: function(seconds) { // unsigned alarm(unsigned seconds); // http://pubs.opengroup.org/onlinepubs/000095399/functions/alarm.html // We don't support signals, and there's no way to indicate failure, so just // fail silently. return 0; }, ualarm: 'alarm', confstr__deps: ['__setErrNo', '$ERRNO_CODES', '$ENV'], confstr: function(name, buf, len) { // size_t confstr(int name, char *buf, size_t len); // http://pubs.opengroup.org/onlinepubs/000095399/functions/confstr.html var value; switch (name) { case {{{ cDefine('_CS_PATH') }}}: value = ENV['PATH'] || '/'; break; case {{{ cDefine('_CS_POSIX_V6_WIDTH_RESTRICTED_ENVS') }}}: // Mimicking glibc. value = 'POSIX_V6_ILP32_OFF32\nPOSIX_V6_ILP32_OFFBIG'; break; case {{{ cDefine('_CS_GNU_LIBC_VERSION') }}}: // This JS implementation was tested against this glibc version. value = 'glibc 2.14'; break; case {{{ cDefine('_CS_GNU_LIBPTHREAD_VERSION') }}}: // We don't support pthreads. value = ''; break; case {{{ cDefine('_CS_POSIX_V6_ILP32_OFF32_LIBS') }}}: case {{{ cDefine('_CS_POSIX_V6_ILP32_OFFBIG_LIBS') }}}: case {{{ cDefine('_CS_POSIX_V6_LP64_OFF64_CFLAGS') }}}: case {{{ cDefine('_CS_POSIX_V6_LP64_OFF64_LDFLAGS') }}}: case {{{ cDefine('_CS_POSIX_V6_LP64_OFF64_LIBS') }}}: case {{{ cDefine('_CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS') }}}: case {{{ cDefine('_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS') }}}: case {{{ cDefine('_CS_POSIX_V6_LPBIG_OFFBIG_LIBS') }}}: value = ''; break; case {{{ cDefine('_CS_POSIX_V6_ILP32_OFF32_CFLAGS') }}}: case {{{ cDefine('_CS_POSIX_V6_ILP32_OFF32_LDFLAGS') }}}: case {{{ cDefine('_CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS') }}}: value = '-m32'; break; case {{{ cDefine('_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS') }}}: value = '-m32 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'; break; default: ___setErrNo(ERRNO_CODES.EINVAL); return 0; } if (len == 0 || buf == 0) { return value.length + 1; } else { var length = Math.min(len, value.length); for (var i = 0; i < length; i++) { {{{ makeSetValue('buf', 'i', 'value.charCodeAt(i)', 'i8') }}}; } if (len > length) {{{ makeSetValue('buf', 'i++', '0', 'i8') }}}; return i; } }, execl__deps: ['__setErrNo', '$ERRNO_CODES'], execl: function(/* ... */) { // int execl(const char *path, const char *arg0, ... /*, (char *)0 */); // http://pubs.opengroup.org/onlinepubs/009695399/functions/exec.html // We don't support executing external code. ___setErrNo(ERRNO_CODES.ENOEXEC); return -1; }, execle: 'execl', execlp: 'execl', execv: 'execl', execve: 'execl', execvp: 'execl', _exit: function(status) { // void _exit(int status); // http://pubs.opengroup.org/onlinepubs/000095399/functions/exit.html Module['exit'](status); }, fork__deps: ['__setErrNo', '$ERRNO_CODES'], fork: function() { // pid_t fork(void); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fork.html // We don't support multiple processes. ___setErrNo(ERRNO_CODES.EAGAIN); return -1; }, vfork: 'fork', getgid: function() { // gid_t getgid(void); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getgid.html // We have just one process/group/user, all with ID 0. return 0; }, getegid: 'getgid', getuid: 'getgid', geteuid: 'getgid', getpgrp: 'getgid', getpid: 'getgid', getppid: 'getgid', getresuid: function(ruid, euid, suid) { // int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid); // http://linux.die.net/man/2/getresuid // We have just one process/group/user, all with ID 0. {{{ makeSetValue('ruid', '0', '0', 'i32') }}}; {{{ makeSetValue('euid', '0', '0', 'i32') }}}; {{{ makeSetValue('suid', '0', '0', 'i32') }}}; return 0; }, getresgid: 'getresuid', getgroups__deps: ['__setErrNo', '$ERRNO_CODES'], getgroups: function(gidsetsize, grouplist) { // int getgroups(int gidsetsize, gid_t grouplist[]); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getgroups.html if (gidsetsize < 1) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } else { {{{ makeSetValue('grouplist', '0', '0', 'i32') }}}; return 1; } }, // TODO: Implement initgroups (grp.h). setgroups__deps: ['__setErrNo', '$ERRNO_CODES', 'sysconf'], setgroups: function(ngroups, gidset) { // int setgroups(int ngroups, const gid_t *gidset); // https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man2/setgroups.2.html if (ngroups < 1 || ngroups > _sysconf({{{ cDefine('_SC_NGROUPS_MAX') }}})) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } else { // We have just one process/user/group, so it makes no sense to set groups. ___setErrNo(ERRNO_CODES.EPERM); return -1; } }, gethostid: function() { // long gethostid(void); // http://pubs.opengroup.org/onlinepubs/000095399/functions/gethostid.html return 42; }, gethostname__deps: ['__setErrNo', '$ERRNO_CODES'], gethostname: function(name, namelen) { // int gethostname(char *name, size_t namelen); // http://pubs.opengroup.org/onlinepubs/000095399/functions/gethostname.html var host = 'emscripten'; if (typeof window !== 'undefined' && window.location.host) { host = window.location.host; } var length = Math.min(namelen, host.length); for (var i = 0; i < length; i++) { {{{ makeSetValue('name', 'i', 'host.charCodeAt(i)', 'i8') }}}; } if (namelen > length) { {{{ makeSetValue('name', 'i', '0', 'i8') }}}; return 0; } else { ___setErrNo(ERRNO_CODES.ENAMETOOLONG); return -1; } }, getlogin__deps: ['getlogin_r', 'malloc'], getlogin: function() { // char *getlogin(void); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getlogin.html if (!_getlogin.ret) _getlogin.ret = _malloc(8); return _getlogin_r(_getlogin.ret, 8) ? 0 : _getlogin.ret; }, getlogin_r__deps: ['__setErrNo', '$ERRNO_CODES'], getlogin_r: function(name, namesize) { // int getlogin_r(char *name, size_t namesize); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getlogin.html var ret = 'root'; if (namesize < ret.length + 1) { return ___setErrNo(ERRNO_CODES.ERANGE); } else { writeAsciiToMemory(ret, name); return 0; } }, getpagesize: function() { // int getpagesize(void); return PAGE_SIZE; }, getopt: function(argc, argv, optstring) { // int getopt(int argc, char * const argv[], const char *optstring); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getopt.html // TODO: Implement (probably compile from C). return -1; }, getpgid: function(pid) { // pid_t getpgid(pid_t pid); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getpgid.html // There can only be one process, and its group ID is 0. return 0; }, getsid: 'getpgid', nice__deps: ['__setErrNo', '$ERRNO_CODES'], nice: function(incr) { // int nice(int incr); // http://pubs.opengroup.org/onlinepubs/000095399/functions/nice.html // Niceness makes no sense in a single-process environment. ___setErrNo(ERRNO_CODES.EPERM); return 0; }, pause__deps: ['__setErrNo', '$ERRNO_CODES'], pause: function() { // int pause(void); // http://pubs.opengroup.org/onlinepubs/000095399/functions/pause.html // We don't support signals, so we return immediately. ___setErrNo(ERRNO_CODES.EINTR); return -1; }, setgid__deps: ['__setErrNo', '$ERRNO_CODES'], setgid: function(gid) { // int setgid(gid_t gid); // http://pubs.opengroup.org/onlinepubs/000095399/functions/setgid.html // We have just one process/group/user, so it makes no sense to set IDs. ___setErrNo(ERRNO_CODES.EPERM); return -1; }, setegid: 'setgid', setuid: 'setgid', seteuid: 'setgid', setsid: 'setgid', setpgrp: 'setgid', setpgid__deps: ['__setErrNo', '$ERRNO_CODES'], setpgid: function(pid, pgid) { // int setpgid(pid_t pid, pid_t pgid); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getpgid.html // We have just one process/group/user, so it makes no sense to set IDs. ___setErrNo(ERRNO_CODES.EPERM); return -1; }, setregid: 'setpgid', setreuid: 'setpgid', // NOTE: These do not match the signatures, but they all use the same stub. setresuid: 'setpgid', setresgid: 'setpgid', sleep__deps: ['usleep'], sleep: function(seconds) { // unsigned sleep(unsigned seconds); // http://pubs.opengroup.org/onlinepubs/000095399/functions/sleep.html return _usleep(seconds * 1e6); }, usleep: function(useconds) { // int usleep(useconds_t useconds); // http://pubs.opengroup.org/onlinepubs/000095399/functions/usleep.html // We're single-threaded, so use a busy loop. Super-ugly. var msec = useconds / 1000; if (ENVIRONMENT_IS_WEB && window['performance'] && window['performance']['now']) { var start = window['performance']['now'](); while (window['performance']['now']() - start < msec) { // Do nothing. } } else { var start = Date.now(); while (Date.now() - start < msec) { // Do nothing. } } return 0; }, swab: function(src, dest, nbytes) { // void swab(const void *restrict src, void *restrict dest, ssize_t nbytes); // http://pubs.opengroup.org/onlinepubs/000095399/functions/swab.html if (nbytes < 0) return; nbytes -= nbytes % 2; for (var i = 0; i < nbytes; i += 2) { var first = {{{ makeGetValue('src', 'i', 'i8') }}}; var second = {{{ makeGetValue('src', 'i + 1', 'i8') }}}; {{{ makeSetValue('dest', 'i', 'second', 'i8') }}}; {{{ makeSetValue('dest', 'i + 1', 'first', 'i8') }}}; } }, tcgetpgrp: function(fildes) { // pid_t tcgetpgrp(int fildes); // http://pubs.opengroup.org/onlinepubs/000095399/functions/tcgetpgrp.html // Our only process always runs with group ID 0. return 0; }, tcsetpgrp__deps: ['__setErrNo', '$ERRNO_CODES'], tcsetpgrp: function(fildes, pgid_id) { // int tcsetpgrp(int fildes, pid_t pgid_id); // http://pubs.opengroup.org/onlinepubs/000095399/functions/tcsetpgrp.html // We don't support multiple processes or groups with ID other than 0. ___setErrNo(ERRNO_CODES.EINVAL); return -1; }, sysconf__deps: ['__setErrNo', '$ERRNO_CODES'], sysconf: function(name) { // long sysconf(int name); // http://pubs.opengroup.org/onlinepubs/009695399/functions/sysconf.html switch(name) { case {{{ cDefine('_SC_PAGE_SIZE') }}}: return PAGE_SIZE; case {{{ cDefine('_SC_ADVISORY_INFO') }}}: case {{{ cDefine('_SC_BARRIERS') }}}: case {{{ cDefine('_SC_ASYNCHRONOUS_IO') }}}: case {{{ cDefine('_SC_CLOCK_SELECTION') }}}: case {{{ cDefine('_SC_CPUTIME') }}}: case {{{ cDefine('_SC_FSYNC') }}}: case {{{ cDefine('_SC_IPV6') }}}: case {{{ cDefine('_SC_MAPPED_FILES') }}}: case {{{ cDefine('_SC_MEMLOCK') }}}: case {{{ cDefine('_SC_MEMLOCK_RANGE') }}}: case {{{ cDefine('_SC_MEMORY_PROTECTION') }}}: case {{{ cDefine('_SC_MESSAGE_PASSING') }}}: case {{{ cDefine('_SC_MONOTONIC_CLOCK') }}}: case {{{ cDefine('_SC_PRIORITIZED_IO') }}}: case {{{ cDefine('_SC_PRIORITY_SCHEDULING') }}}: case {{{ cDefine('_SC_RAW_SOCKETS') }}}: case {{{ cDefine('_SC_READER_WRITER_LOCKS') }}}: case {{{ cDefine('_SC_REALTIME_SIGNALS') }}}: case {{{ cDefine('_SC_SEMAPHORES') }}}: case {{{ cDefine('_SC_SHARED_MEMORY_OBJECTS') }}}: case {{{ cDefine('_SC_SPAWN') }}}: case {{{ cDefine('_SC_SPIN_LOCKS') }}}: case {{{ cDefine('_SC_SYNCHRONIZED_IO') }}}: case {{{ cDefine('_SC_THREAD_ATTR_STACKADDR') }}}: case {{{ cDefine('_SC_THREAD_ATTR_STACKSIZE') }}}: case {{{ cDefine('_SC_THREAD_CPUTIME') }}}: case {{{ cDefine('_SC_THREAD_PRIO_INHERIT') }}}: case {{{ cDefine('_SC_THREAD_PRIO_PROTECT') }}}: case {{{ cDefine('_SC_THREAD_PRIORITY_SCHEDULING') }}}: case {{{ cDefine('_SC_THREAD_PROCESS_SHARED') }}}: case {{{ cDefine('_SC_THREAD_SAFE_FUNCTIONS') }}}: case {{{ cDefine('_SC_THREADS') }}}: case {{{ cDefine('_SC_TIMEOUTS') }}}: case {{{ cDefine('_SC_TIMERS') }}}: case {{{ cDefine('_SC_VERSION') }}}: case {{{ cDefine('_SC_2_C_BIND') }}}: case {{{ cDefine('_SC_2_C_DEV') }}}: case {{{ cDefine('_SC_2_CHAR_TERM') }}}: case {{{ cDefine('_SC_2_LOCALEDEF') }}}: case {{{ cDefine('_SC_2_SW_DEV') }}}: case {{{ cDefine('_SC_2_VERSION') }}}: return 200809; case {{{ cDefine('_SC_MQ_OPEN_MAX') }}}: case {{{ cDefine('_SC_XOPEN_STREAMS') }}}: case {{{ cDefine('_SC_XBS5_LP64_OFF64') }}}: case {{{ cDefine('_SC_XBS5_LPBIG_OFFBIG') }}}: case {{{ cDefine('_SC_AIO_LISTIO_MAX') }}}: case {{{ cDefine('_SC_AIO_MAX') }}}: case {{{ cDefine('_SC_SPORADIC_SERVER') }}}: case {{{ cDefine('_SC_THREAD_SPORADIC_SERVER') }}}: case {{{ cDefine('_SC_TRACE') }}}: case {{{ cDefine('_SC_TRACE_EVENT_FILTER') }}}: case {{{ cDefine('_SC_TRACE_EVENT_NAME_MAX') }}}: case {{{ cDefine('_SC_TRACE_INHERIT') }}}: case {{{ cDefine('_SC_TRACE_LOG') }}}: case {{{ cDefine('_SC_TRACE_NAME_MAX') }}}: case {{{ cDefine('_SC_TRACE_SYS_MAX') }}}: case {{{ cDefine('_SC_TRACE_USER_EVENT_MAX') }}}: case {{{ cDefine('_SC_TYPED_MEMORY_OBJECTS') }}}: case {{{ cDefine('_SC_V6_LP64_OFF64') }}}: case {{{ cDefine('_SC_V6_LPBIG_OFFBIG') }}}: case {{{ cDefine('_SC_2_FORT_DEV') }}}: case {{{ cDefine('_SC_2_FORT_RUN') }}}: case {{{ cDefine('_SC_2_PBS') }}}: case {{{ cDefine('_SC_2_PBS_ACCOUNTING') }}}: case {{{ cDefine('_SC_2_PBS_CHECKPOINT') }}}: case {{{ cDefine('_SC_2_PBS_LOCATE') }}}: case {{{ cDefine('_SC_2_PBS_MESSAGE') }}}: case {{{ cDefine('_SC_2_PBS_TRACK') }}}: case {{{ cDefine('_SC_2_UPE') }}}: case {{{ cDefine('_SC_THREAD_THREADS_MAX') }}}: case {{{ cDefine('_SC_SEM_NSEMS_MAX') }}}: case {{{ cDefine('_SC_SYMLOOP_MAX') }}}: case {{{ cDefine('_SC_TIMER_MAX') }}}: return -1; case {{{ cDefine('_SC_V6_ILP32_OFF32') }}}: case {{{ cDefine('_SC_V6_ILP32_OFFBIG') }}}: case {{{ cDefine('_SC_JOB_CONTROL') }}}: case {{{ cDefine('_SC_REGEXP') }}}: case {{{ cDefine('_SC_SAVED_IDS') }}}: case {{{ cDefine('_SC_SHELL') }}}: case {{{ cDefine('_SC_XBS5_ILP32_OFF32') }}}: case {{{ cDefine('_SC_XBS5_ILP32_OFFBIG') }}}: case {{{ cDefine('_SC_XOPEN_CRYPT') }}}: case {{{ cDefine('_SC_XOPEN_ENH_I18N') }}}: case {{{ cDefine('_SC_XOPEN_LEGACY') }}}: case {{{ cDefine('_SC_XOPEN_REALTIME') }}}: case {{{ cDefine('_SC_XOPEN_REALTIME_THREADS') }}}: case {{{ cDefine('_SC_XOPEN_SHM') }}}: case {{{ cDefine('_SC_XOPEN_UNIX') }}}: return 1; case {{{ cDefine('_SC_THREAD_KEYS_MAX') }}}: case {{{ cDefine('_SC_IOV_MAX') }}}: case {{{ cDefine('_SC_GETGR_R_SIZE_MAX') }}}: case {{{ cDefine('_SC_GETPW_R_SIZE_MAX') }}}: case {{{ cDefine('_SC_OPEN_MAX') }}}: return 1024; case {{{ cDefine('_SC_RTSIG_MAX') }}}: case {{{ cDefine('_SC_EXPR_NEST_MAX') }}}: case {{{ cDefine('_SC_TTY_NAME_MAX') }}}: return 32; case {{{ cDefine('_SC_ATEXIT_MAX') }}}: case {{{ cDefine('_SC_DELAYTIMER_MAX') }}}: case {{{ cDefine('_SC_SEM_VALUE_MAX') }}}: return 2147483647; case {{{ cDefine('_SC_SIGQUEUE_MAX') }}}: case {{{ cDefine('_SC_CHILD_MAX') }}}: return 47839; case {{{ cDefine('_SC_BC_SCALE_MAX') }}}: case {{{ cDefine('_SC_BC_BASE_MAX') }}}: return 99; case {{{ cDefine('_SC_LINE_MAX') }}}: case {{{ cDefine('_SC_BC_DIM_MAX') }}}: return 2048; case {{{ cDefine('_SC_ARG_MAX') }}}: return 2097152; case {{{ cDefine('_SC_NGROUPS_MAX') }}}: return 65536; case {{{ cDefine('_SC_MQ_PRIO_MAX') }}}: return 32768; case {{{ cDefine('_SC_RE_DUP_MAX') }}}: return 32767; case {{{ cDefine('_SC_THREAD_STACK_MIN') }}}: return 16384; case {{{ cDefine('_SC_BC_STRING_MAX') }}}: return 1000; case {{{ cDefine('_SC_XOPEN_VERSION') }}}: return 700; case {{{ cDefine('_SC_LOGIN_NAME_MAX') }}}: return 256; case {{{ cDefine('_SC_COLL_WEIGHTS_MAX') }}}: return 255; case {{{ cDefine('_SC_CLK_TCK') }}}: return 100; case {{{ cDefine('_SC_HOST_NAME_MAX') }}}: return 64; case {{{ cDefine('_SC_AIO_PRIO_DELTA_MAX') }}}: return 20; case {{{ cDefine('_SC_STREAM_MAX') }}}: return 16; case {{{ cDefine('_SC_TZNAME_MAX') }}}: return 6; case {{{ cDefine('_SC_THREAD_DESTRUCTOR_ITERATIONS') }}}: return 4; case {{{ cDefine('_SC_NPROCESSORS_ONLN') }}}: return 1; } ___setErrNo(ERRNO_CODES.EINVAL); return -1; }, sbrk: function(bytes) { // Implement a Linux-like 'memory area' for our 'process'. // Changes the size of the memory area by |bytes|; returns the // address of the previous top ('break') of the memory area // We control the "dynamic" memory - DYNAMIC_BASE to DYNAMICTOP var self = _sbrk; if (!self.called) { DYNAMICTOP = alignMemoryPage(DYNAMICTOP); // make sure we start out aligned self.called = true; assert(Runtime.dynamicAlloc); self.alloc = Runtime.dynamicAlloc; Runtime.dynamicAlloc = function() { abort('cannot dynamically allocate, sbrk now has control') }; } var ret = DYNAMICTOP; if (bytes != 0) self.alloc(bytes); return ret; // Previous break location. }, // ========================================================================== // stdio.h // ========================================================================== _getFloat: function(text) { return /^[+-]?[0-9]*\.?[0-9]+([eE][+-]?[0-9]+)?/.exec(text); }, _scanString__deps: ['_getFloat'], _scanString: function(format, get, unget, varargs) { if (!__scanString.whiteSpace) { __scanString.whiteSpace = {}; __scanString.whiteSpace[{{{ charCode(' ') }}}] = 1; __scanString.whiteSpace[{{{ charCode('\t') }}}] = 1; __scanString.whiteSpace[{{{ charCode('\n') }}}] = 1; __scanString.whiteSpace[{{{ charCode('\v') }}}] = 1; __scanString.whiteSpace[{{{ charCode('\f') }}}] = 1; __scanString.whiteSpace[{{{ charCode('\r') }}}] = 1; } // Supports %x, %4x, %d.%d, %lld, %s, %f, %lf. // TODO: Support all format specifiers. format = Pointer_stringify(format); var soFar = 0; if (format.indexOf('%n') >= 0) { // need to track soFar var _get = get; get = function get() { soFar++; return _get(); } var _unget = unget; unget = function unget() { soFar--; return _unget(); } } var formatIndex = 0; var argsi = 0; var fields = 0; var argIndex = 0; var next; mainLoop: for (var formatIndex = 0; formatIndex < format.length;) { if (format[formatIndex] === '%' && format[formatIndex+1] == 'n') { var argPtr = {{{ makeGetValue('varargs', 'argIndex', 'void*') }}}; argIndex += Runtime.getAlignSize('void*', null, true); {{{ makeSetValue('argPtr', 0, 'soFar', 'i32') }}}; formatIndex += 2; continue; } if (format[formatIndex] === '%') { var nextC = format.indexOf('c', formatIndex+1); if (nextC > 0) { var maxx = 1; if (nextC > formatIndex+1) { var sub = format.substring(formatIndex+1, nextC); maxx = parseInt(sub); if (maxx != sub) maxx = 0; } if (maxx) { var argPtr = {{{ makeGetValue('varargs', 'argIndex', 'void*') }}}; argIndex += Runtime.getAlignSize('void*', null, true); fields++; for (var i = 0; i < maxx; i++) { next = get(); {{{ makeSetValue('argPtr++', 0, 'next', 'i8') }}}; if (next === 0) return i > 0 ? fields : fields-1; // we failed to read the full length of this field } formatIndex += nextC - formatIndex + 1; continue; } } } // handle %[...] if (format[formatIndex] === '%' && format.indexOf('[', formatIndex+1) > 0) { var match = /\%([0-9]*)\[(\^)?(\]?[^\]]*)\]/.exec(format.substring(formatIndex)); if (match) { var maxNumCharacters = parseInt(match[1]) || Infinity; var negateScanList = (match[2] === '^'); var scanList = match[3]; // expand "middle" dashs into character sets var middleDashMatch; while ((middleDashMatch = /([^\-])\-([^\-])/.exec(scanList))) { var rangeStartCharCode = middleDashMatch[1].charCodeAt(0); var rangeEndCharCode = middleDashMatch[2].charCodeAt(0); for (var expanded = ''; rangeStartCharCode <= rangeEndCharCode; expanded += String.fromCharCode(rangeStartCharCode++)); scanList = scanList.replace(middleDashMatch[1] + '-' + middleDashMatch[2], expanded); } var argPtr = {{{ makeGetValue('varargs', 'argIndex', 'void*') }}}; argIndex += Runtime.getAlignSize('void*', null, true); fields++; for (var i = 0; i < maxNumCharacters; i++) { next = get(); if (negateScanList) { if (scanList.indexOf(String.fromCharCode(next)) < 0) { {{{ makeSetValue('argPtr++', 0, 'next', 'i8') }}}; } else { unget(); break; } } else { if (scanList.indexOf(String.fromCharCode(next)) >= 0) { {{{ makeSetValue('argPtr++', 0, 'next', 'i8') }}}; } else { unget(); break; } } } // write out null-terminating character {{{ makeSetValue('argPtr++', 0, '0', 'i8') }}}; formatIndex += match[0].length; continue; } } // remove whitespace while (1) { next = get(); if (next == 0) return fields; if (!(next in __scanString.whiteSpace)) break; } unget(); if (format[formatIndex] === '%') { formatIndex++; var suppressAssignment = false; if (format[formatIndex] == '*') { suppressAssignment = true; formatIndex++; } var maxSpecifierStart = formatIndex; while (format[formatIndex].charCodeAt(0) >= {{{ charCode('0') }}} && format[formatIndex].charCodeAt(0) <= {{{ charCode('9') }}}) { formatIndex++; } var max_; if (formatIndex != maxSpecifierStart) { max_ = parseInt(format.slice(maxSpecifierStart, formatIndex), 10); } var long_ = false; var half = false; var quarter = false; var longLong = false; if (format[formatIndex] == 'l') { long_ = true; formatIndex++; if (format[formatIndex] == 'l') { longLong = true; formatIndex++; } } else if (format[formatIndex] == 'h') { half = true; formatIndex++; if (format[formatIndex] == 'h') { quarter = true; formatIndex++; } } var type = format[formatIndex]; formatIndex++; var curr = 0; var buffer = []; // Read characters according to the format. floats are trickier, they may be in an unfloat state in the middle, then be a valid float later if (type == 'f' || type == 'e' || type == 'g' || type == 'F' || type == 'E' || type == 'G') { next = get(); while (next > 0 && (!(next in __scanString.whiteSpace))) { buffer.push(String.fromCharCode(next)); next = get(); } var m = __getFloat(buffer.join('')); var last = m ? m[0].length : 0; for (var i = 0; i < buffer.length - last + 1; i++) { unget(); } buffer.length = last; } else { next = get(); var first = true; // Strip the optional 0x prefix for %x. if ((type == 'x' || type == 'X') && (next == {{{ charCode('0') }}})) { var peek = get(); if (peek == {{{ charCode('x') }}} || peek == {{{ charCode('X') }}}) { next = get(); } else { unget(); } } while ((curr < max_ || isNaN(max_)) && next > 0) { if (!(next in __scanString.whiteSpace) && // stop on whitespace (type == 's' || ((type === 'd' || type == 'u' || type == 'i') && ((next >= {{{ charCode('0') }}} && next <= {{{ charCode('9') }}}) || (first && next == {{{ charCode('-') }}}))) || ((type === 'x' || type === 'X') && (next >= {{{ charCode('0') }}} && next <= {{{ charCode('9') }}} || next >= {{{ charCode('a') }}} && next <= {{{ charCode('f') }}} || next >= {{{ charCode('A') }}} && next <= {{{ charCode('F') }}}))) && (formatIndex >= format.length || next !== format[formatIndex].charCodeAt(0))) { // Stop when we read something that is coming up buffer.push(String.fromCharCode(next)); next = get(); curr++; first = false; } else { break; } } unget(); } if (buffer.length === 0) return 0; // Failure. if (suppressAssignment) continue; var text = buffer.join(''); var argPtr = {{{ makeGetValue('varargs', 'argIndex', 'void*') }}}; argIndex += Runtime.getAlignSize('void*', null, true); var base = 10; switch (type) { case 'X': case 'x': base = 16; case 'd': case 'u': case 'i': if (quarter) { {{{ makeSetValue('argPtr', 0, 'parseInt(text, base)', 'i8') }}}; } else if (half) { {{{ makeSetValue('argPtr', 0, 'parseInt(text, base)', 'i16') }}}; } else if (longLong) { {{{ makeSetValue('argPtr', 0, 'parseInt(text, base)', 'i64') }}}; } else { {{{ makeSetValue('argPtr', 0, 'parseInt(text, base)', 'i32') }}}; } break; case 'F': case 'f': case 'E': case 'e': case 'G': case 'g': case 'E': // fallthrough intended if (long_) { {{{ makeSetValue('argPtr', 0, 'parseFloat(text)', 'double') }}}; } else { {{{ makeSetValue('argPtr', 0, 'parseFloat(text)', 'float') }}}; } break; case 's': var array = intArrayFromString(text); for (var j = 0; j < array.length; j++) { {{{ makeSetValue('argPtr', 'j', 'array[j]', 'i8') }}}; } break; } fields++; } else if (format[formatIndex].charCodeAt(0) in __scanString.whiteSpace) { next = get(); while (next in __scanString.whiteSpace) { if (next <= 0) break mainLoop; // End of input. next = get(); } unget(next); formatIndex++; } else { // Not a specifier. next = get(); if (format[formatIndex].charCodeAt(0) !== next) { unget(next); break mainLoop; } formatIndex++; } } return fields; }, // Performs printf-style formatting. // format: A pointer to the format string. // varargs: A pointer to the start of the arguments list. // Returns the resulting string string as a character array. _formatString__deps: ['strlen', '_reallyNegative'], _formatString: function(format, varargs) { var textIndex = format; var argIndex = 0; function getNextArg(type) { // NOTE: Explicitly ignoring type safety. Otherwise this fails: // int x = 4; printf("%c\n", (char)x); var ret; if (type === 'double') { #if TARGET_ASMJS_UNKNOWN_EMSCRIPTEN == 2 ret = {{{ makeGetValue('varargs', 'argIndex', 'double', undefined, undefined, true, 4) }}}; #else ret = {{{ makeGetValue('varargs', 'argIndex', 'double', undefined, undefined, true) }}}; #endif #if USE_TYPED_ARRAYS == 2 } else if (type == 'i64') { #if TARGET_ASMJS_UNKNOWN_EMSCRIPTEN == 1 ret = [{{{ makeGetValue('varargs', 'argIndex', 'i32', undefined, undefined, true) }}}, {{{ makeGetValue('varargs', 'argIndex+8', 'i32', undefined, undefined, true) }}}]; argIndex += {{{ STACK_ALIGN }}}; // each 32-bit chunk is in a 64-bit block #else ret = [{{{ makeGetValue('varargs', 'argIndex', 'i32', undefined, undefined, true, 4) }}}, {{{ makeGetValue('varargs', 'argIndex+4', 'i32', undefined, undefined, true, 4) }}}]; #endif #else } else if (type == 'i64') { ret = {{{ makeGetValue('varargs', 'argIndex', 'i64', undefined, undefined, true) }}}; #endif } else { type = 'i32'; // varargs are always i32, i64, or double ret = {{{ makeGetValue('varargs', 'argIndex', 'i32', undefined, undefined, true) }}}; } #if TARGET_ASMJS_UNKNOWN_EMSCRIPTEN == 2 argIndex += Runtime.getNativeFieldSize(type); #else argIndex += Math.max(Runtime.getNativeFieldSize(type), Runtime.getAlignSize(type, null, true)); #endif return ret; } var ret = []; var curr, next, currArg; while(1) { var startTextIndex = textIndex; curr = {{{ makeGetValue(0, 'textIndex', 'i8') }}}; if (curr === 0) break; next = {{{ makeGetValue(0, 'textIndex+1', 'i8') }}}; if (curr == {{{ charCode('%') }}}) { // Handle flags. var flagAlwaysSigned = false; var flagLeftAlign = false; var flagAlternative = false; var flagZeroPad = false; var flagPadSign = false; flagsLoop: while (1) { switch (next) { case {{{ charCode('+') }}}: flagAlwaysSigned = true; break; case {{{ charCode('-') }}}: flagLeftAlign = true; break; case {{{ charCode('#') }}}: flagAlternative = true; break; case {{{ charCode('0') }}}: if (flagZeroPad) { break flagsLoop; } else { flagZeroPad = true; break; } case {{{ charCode(' ') }}}: flagPadSign = true; break; default: break flagsLoop; } textIndex++; next = {{{ makeGetValue(0, 'textIndex+1', 'i8') }}}; } // Handle width. var width = 0; if (next == {{{ charCode('*') }}}) { width = getNextArg('i32'); textIndex++; next = {{{ makeGetValue(0, 'textIndex+1', 'i8') }}}; } else { while (next >= {{{ charCode('0') }}} && next <= {{{ charCode('9') }}}) { width = width * 10 + (next - {{{ charCode('0') }}}); textIndex++; next = {{{ makeGetValue(0, 'textIndex+1', 'i8') }}}; } } // Handle precision. var precisionSet = false, precision = -1; if (next == {{{ charCode('.') }}}) { precision = 0; precisionSet = true; textIndex++; next = {{{ makeGetValue(0, 'textIndex+1', 'i8') }}}; if (next == {{{ charCode('*') }}}) { precision = getNextArg('i32'); textIndex++; } else { while(1) { var precisionChr = {{{ makeGetValue(0, 'textIndex+1', 'i8') }}}; if (precisionChr < {{{ charCode('0') }}} || precisionChr > {{{ charCode('9') }}}) break; precision = precision * 10 + (precisionChr - {{{ charCode('0') }}}); textIndex++; } } next = {{{ makeGetValue(0, 'textIndex+1', 'i8') }}}; } if (precision < 0) { precision = 6; // Standard default. precisionSet = false; } // Handle integer sizes. WARNING: These assume a 32-bit architecture! var argSize; switch (String.fromCharCode(next)) { case 'h': var nextNext = {{{ makeGetValue(0, 'textIndex+2', 'i8') }}}; if (nextNext == {{{ charCode('h') }}}) { textIndex++; argSize = 1; // char (actually i32 in varargs) } else { argSize = 2; // short (actually i32 in varargs) } break; case 'l': var nextNext = {{{ makeGetValue(0, 'textIndex+2', 'i8') }}}; if (nextNext == {{{ charCode('l') }}}) { textIndex++; argSize = 8; // long long } else { argSize = 4; // long } break; case 'L': // long long case 'q': // int64_t case 'j': // intmax_t argSize = 8; break; case 'z': // size_t case 't': // ptrdiff_t case 'I': // signed ptrdiff_t or unsigned size_t argSize = 4; break; default: argSize = null; } if (argSize) textIndex++; next = {{{ makeGetValue(0, 'textIndex+1', 'i8') }}}; // Handle type specifier. switch (String.fromCharCode(next)) { case 'd': case 'i': case 'u': case 'o': case 'x': case 'X': case 'p': { // Integer. var signed = next == {{{ charCode('d') }}} || next == {{{ charCode('i') }}}; argSize = argSize || 4; var currArg = getNextArg('i' + (argSize * 8)); #if PRECISE_I64_MATH var origArg = currArg; #endif var argText; #if USE_TYPED_ARRAYS == 2 // Flatten i64-1 [low, high] into a (slightly rounded) double if (argSize == 8) { currArg = Runtime.makeBigInt(currArg[0], currArg[1], next == {{{ charCode('u') }}}); } #endif // Truncate to requested size. if (argSize <= 4) { var limit = Math.pow(256, argSize) - 1; currArg = (signed ? reSign : unSign)(currArg & limit, argSize * 8); } // Format the number. var currAbsArg = Math.abs(currArg); var prefix = ''; if (next == {{{ charCode('d') }}} || next == {{{ charCode('i') }}}) { #if PRECISE_I64_MATH if (argSize == 8 && i64Math) argText = i64Math.stringify(origArg[0], origArg[1], null); else #endif argText = reSign(currArg, 8 * argSize, 1).toString(10); } else if (next == {{{ charCode('u') }}}) { #if PRECISE_I64_MATH if (argSize == 8 && i64Math) argText = i64Math.stringify(origArg[0], origArg[1], true); else #endif argText = unSign(currArg, 8 * argSize, 1).toString(10); currArg = Math.abs(currArg); } else if (next == {{{ charCode('o') }}}) { argText = (flagAlternative ? '0' : '') + currAbsArg.toString(8); } else if (next == {{{ charCode('x') }}} || next == {{{ charCode('X') }}}) { prefix = (flagAlternative && currArg != 0) ? '0x' : ''; #if PRECISE_I64_MATH if (argSize == 8 && i64Math) { if (origArg[1]) { argText = (origArg[1]>>>0).toString(16); var lower = (origArg[0]>>>0).toString(16); while (lower.length < 8) lower = '0' + lower; argText += lower; } else { argText = (origArg[0]>>>0).toString(16); } } else #endif if (currArg < 0) { // Represent negative numbers in hex as 2's complement. currArg = -currArg; argText = (currAbsArg - 1).toString(16); var buffer = []; for (var i = 0; i < argText.length; i++) { buffer.push((0xF - parseInt(argText[i], 16)).toString(16)); } argText = buffer.join(''); while (argText.length < argSize * 2) argText = 'f' + argText; } else { argText = currAbsArg.toString(16); } if (next == {{{ charCode('X') }}}) { prefix = prefix.toUpperCase(); argText = argText.toUpperCase(); } } else if (next == {{{ charCode('p') }}}) { if (currAbsArg === 0) { argText = '(nil)'; } else { prefix = '0x'; argText = currAbsArg.toString(16); } } if (precisionSet) { while (argText.length < precision) { argText = '0' + argText; } } // Add sign if needed if (currArg >= 0) { if (flagAlwaysSigned) { prefix = '+' + prefix; } else if (flagPadSign) { prefix = ' ' + prefix; } } // Move sign to prefix so we zero-pad after the sign if (argText.charAt(0) == '-') { prefix = '-' + prefix; argText = argText.substr(1); } // Add padding. while (prefix.length + argText.length < width) { if (flagLeftAlign) { argText += ' '; } else { if (flagZeroPad) { argText = '0' + argText; } else { prefix = ' ' + prefix; } } } // Insert the result into the buffer. argText = prefix + argText; argText.split('').forEach(function(chr) { ret.push(chr.charCodeAt(0)); }); break; } case 'f': case 'F': case 'e': case 'E': case 'g': case 'G': { // Float. var currArg = getNextArg('double'); var argText; if (isNaN(currArg)) { argText = 'nan'; flagZeroPad = false; } else if (!isFinite(currArg)) { argText = (currArg < 0 ? '-' : '') + 'inf'; flagZeroPad = false; } else { var isGeneral = false; var effectivePrecision = Math.min(precision, 20); // Convert g/G to f/F or e/E, as per: // http://pubs.opengroup.org/onlinepubs/9699919799/functions/printf.html if (next == {{{ charCode('g') }}} || next == {{{ charCode('G') }}}) { isGeneral = true; precision = precision || 1; var exponent = parseInt(currArg.toExponential(effectivePrecision).split('e')[1], 10); if (precision > exponent && exponent >= -4) { next = ((next == {{{ charCode('g') }}}) ? 'f' : 'F').charCodeAt(0); precision -= exponent + 1; } else { next = ((next == {{{ charCode('g') }}}) ? 'e' : 'E').charCodeAt(0); precision--; } effectivePrecision = Math.min(precision, 20); } if (next == {{{ charCode('e') }}} || next == {{{ charCode('E') }}}) { argText = currArg.toExponential(effectivePrecision); // Make sure the exponent has at least 2 digits. if (/[eE][-+]\d$/.test(argText)) { argText = argText.slice(0, -1) + '0' + argText.slice(-1); } } else if (next == {{{ charCode('f') }}} || next == {{{ charCode('F') }}}) { argText = currArg.toFixed(effectivePrecision); if (currArg === 0 && __reallyNegative(currArg)) { argText = '-' + argText; } } var parts = argText.split('e'); if (isGeneral && !flagAlternative) { // Discard trailing zeros and periods. while (parts[0].length > 1 && parts[0].indexOf('.') != -1 && (parts[0].slice(-1) == '0' || parts[0].slice(-1) == '.')) { parts[0] = parts[0].slice(0, -1); } } else { // Make sure we have a period in alternative mode. if (flagAlternative && argText.indexOf('.') == -1) parts[0] += '.'; // Zero pad until required precision. while (precision > effectivePrecision++) parts[0] += '0'; } argText = parts[0] + (parts.length > 1 ? 'e' + parts[1] : ''); // Capitalize 'E' if needed. if (next == {{{ charCode('E') }}}) argText = argText.toUpperCase(); // Add sign. if (currArg >= 0) { if (flagAlwaysSigned) { argText = '+' + argText; } else if (flagPadSign) { argText = ' ' + argText; } } } // Add padding. while (argText.length < width) { if (flagLeftAlign) { argText += ' '; } else { if (flagZeroPad && (argText[0] == '-' || argText[0] == '+')) { argText = argText[0] + '0' + argText.slice(1); } else { argText = (flagZeroPad ? '0' : ' ') + argText; } } } // Adjust case. if (next < {{{ charCode('a') }}}) argText = argText.toUpperCase(); // Insert the result into the buffer. argText.split('').forEach(function(chr) { ret.push(chr.charCodeAt(0)); }); break; } case 's': { // String. var arg = getNextArg('i8*'); var argLength = arg ? _strlen(arg) : '(null)'.length; if (precisionSet) argLength = Math.min(argLength, precision); if (!flagLeftAlign) { while (argLength < width--) { ret.push({{{ charCode(' ') }}}); } } if (arg) { for (var i = 0; i < argLength; i++) { ret.push({{{ makeGetValue('arg++', 0, 'i8', null, true) }}}); } } else { ret = ret.concat(intArrayFromString('(null)'.substr(0, argLength), true)); } if (flagLeftAlign) { while (argLength < width--) { ret.push({{{ charCode(' ') }}}); } } break; } case 'c': { // Character. if (flagLeftAlign) ret.push(getNextArg('i8')); while (--width > 0) { ret.push({{{ charCode(' ') }}}); } if (!flagLeftAlign) ret.push(getNextArg('i8')); break; } case 'n': { // Write the length written so far to the next parameter. var ptr = getNextArg('i32*'); {{{ makeSetValue('ptr', '0', 'ret.length', 'i32') }}}; break; } case '%': { // Literal percent sign. ret.push(curr); break; } default: { // Unknown specifiers remain untouched. for (var i = startTextIndex; i < textIndex + 2; i++) { ret.push({{{ makeGetValue(0, 'i', 'i8') }}}); } } } textIndex += 2; // TODO: Support a/A (hex float) and m (last error) specifiers. // TODO: Support %1${specifier} for arg selection. } else { ret.push(curr); textIndex += 1; } } return ret; }, // NOTE: Invalid stream pointers passed to these functions would cause a crash // in native code. We, on the other hand, just ignore them, since it's // easier. clearerr__deps: ['$FS'], clearerr: function(stream) { // void clearerr(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/clearerr.html stream = FS.getStreamFromPtr(stream); if (!stream) { return; } stream.eof = false; stream.error = false; }, fclose__deps: ['close', 'fsync', 'fileno'], fclose: function(stream) { // int fclose(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fclose.html var fd = _fileno(stream); _fsync(fd); return _close(fd); }, fdopen__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], fdopen: function(fildes, mode) { // FILE *fdopen(int fildes, const char *mode); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fdopen.html mode = Pointer_stringify(mode); var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return 0; } if ((mode.indexOf('w') != -1 && !stream.isWrite) || (mode.indexOf('r') != -1 && !stream.isRead) || (mode.indexOf('a') != -1 && !stream.isAppend) || (mode.indexOf('+') != -1 && (!stream.isRead || !stream.isWrite))) { ___setErrNo(ERRNO_CODES.EINVAL); return 0; } else { stream.error = false; stream.eof = false; return FS.getPtrForStream(stream); } }, feof__deps: ['$FS'], feof: function(stream) { // int feof(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/feof.html stream = FS.getStreamFromPtr(stream); return Number(stream && stream.eof); }, ferror__deps: ['$FS'], ferror: function(stream) { // int ferror(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/ferror.html stream = FS.getStreamFromPtr(stream); return Number(stream && stream.error); }, fflush__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], fflush: function(stream) { // int fflush(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fflush.html // we don't currently perform any user-space buffering of data }, fgetc__deps: ['$FS', 'fread'], fgetc__postset: '_fgetc.ret = allocate([0], "i8", ALLOC_STATIC);', fgetc: function(stream) { // int fgetc(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fgetc.html var streamObj = FS.getStreamFromPtr(stream); if (!streamObj) return -1; if (streamObj.eof || streamObj.error) return -1; var ret = _fread(_fgetc.ret, 1, 1, stream); if (ret == 0) { return -1; } else if (ret == -1) { streamObj.error = true; return -1; } else { return {{{ makeGetValue('_fgetc.ret', '0', 'i8', null, 1) }}}; } }, getc: 'fgetc', getc_unlocked: 'fgetc', getchar__deps: ['fgetc', 'stdin'], getchar: function() { // int getchar(void); // http://pubs.opengroup.org/onlinepubs/000095399/functions/getchar.html return _fgetc({{{ makeGetValue(makeGlobalUse('_stdin'), '0', 'void*') }}}); }, fgetpos__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], fgetpos: function(stream, pos) { // int fgetpos(FILE *restrict stream, fpos_t *restrict pos); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fgetpos.html stream = FS.getStreamFromPtr(stream); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } if (FS.isChrdev(stream.node.mode)) { ___setErrNo(ERRNO_CODES.ESPIPE); return -1; } {{{ makeSetValue('pos', '0', 'stream.position', 'i32') }}}; var state = (stream.eof ? 1 : 0) + (stream.error ? 2 : 0); {{{ makeSetValue('pos', Runtime.getNativeTypeSize('i32'), 'state', 'i32') }}}; return 0; }, fgets__deps: ['fgetc'], fgets: function(s, n, stream) { // char *fgets(char *restrict s, int n, FILE *restrict stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fgets.html var streamObj = FS.getStreamFromPtr(stream); if (!streamObj) return 0; if (streamObj.error || streamObj.eof) return 0; var byte_; for (var i = 0; i < n - 1 && byte_ != {{{ charCode('\n') }}}; i++) { byte_ = _fgetc(stream); if (byte_ == -1) { if (streamObj.error || (streamObj.eof && i == 0)) return 0; else if (streamObj.eof) break; } {{{ makeSetValue('s', 'i', 'byte_', 'i8') }}}; } {{{ makeSetValue('s', 'i', '0', 'i8') }}}; return s; }, gets__deps: ['fgets'], gets: function(s) { // char *gets(char *s); // http://pubs.opengroup.org/onlinepubs/000095399/functions/gets.html return _fgets(s, 1e6, {{{ makeGetValue(makeGlobalUse('_stdin'), '0', 'void*') }}}); }, fileno: function(stream) { // int fileno(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fileno.html stream = FS.getStreamFromPtr(stream); if (!stream) return -1; return stream.fd; }, ftrylockfile: function() { // int ftrylockfile(FILE *file); // http://pubs.opengroup.org/onlinepubs/000095399/functions/flockfile.html // Locking is useless in a single-threaded environment. Pretend to succeed. return 0; }, flockfile: 'ftrylockfile', funlockfile: 'ftrylockfile', fopen__deps: ['$FS', '__setErrNo', '$ERRNO_CODES', 'open'], fopen: function(filename, mode) { // FILE *fopen(const char *restrict filename, const char *restrict mode); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fopen.html var flags; mode = Pointer_stringify(mode); if (mode[0] == 'r') { if (mode.indexOf('+') != -1) { flags = {{{ cDefine('O_RDWR') }}}; } else { flags = {{{ cDefine('O_RDONLY') }}}; } } else if (mode[0] == 'w') { if (mode.indexOf('+') != -1) { flags = {{{ cDefine('O_RDWR') }}}; } else { flags = {{{ cDefine('O_WRONLY') }}}; } flags |= {{{ cDefine('O_CREAT') }}}; flags |= {{{ cDefine('O_TRUNC') }}}; } else if (mode[0] == 'a') { if (mode.indexOf('+') != -1) { flags = {{{ cDefine('O_RDWR') }}}; } else { flags = {{{ cDefine('O_WRONLY') }}}; } flags |= {{{ cDefine('O_CREAT') }}}; flags |= {{{ cDefine('O_APPEND') }}}; } else { ___setErrNo(ERRNO_CODES.EINVAL); return 0; } var fd = _open(filename, flags, allocate([0x1FF, 0, 0, 0], 'i32', ALLOC_STACK)); // All creation permissions. return fd === -1 ? 0 : FS.getPtrForStream(FS.getStream(fd)); }, fputc__deps: ['$FS', 'write', 'fileno'], fputc__postset: '_fputc.ret = allocate([0], "i8", ALLOC_STATIC);', fputc: function(c, stream) { // int fputc(int c, FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fputc.html var chr = unSign(c & 0xFF); {{{ makeSetValue('_fputc.ret', '0', 'chr', 'i8') }}}; var fd = _fileno(stream); var ret = _write(fd, _fputc.ret, 1); if (ret == -1) { var streamObj = FS.getStreamFromPtr(stream); if (streamObj) streamObj.error = true; return -1; } else { return chr; } }, putc: 'fputc', putc_unlocked: 'fputc', putchar__deps: ['fputc', 'stdout'], putchar: function(c) { // int putchar(int c); // http://pubs.opengroup.org/onlinepubs/000095399/functions/putchar.html return _fputc(c, {{{ makeGetValue(makeGlobalUse('_stdout'), '0', 'void*') }}}); }, putchar_unlocked: 'putchar', fputs__deps: ['write', 'strlen', 'fileno'], fputs: function(s, stream) { // int fputs(const char *restrict s, FILE *restrict stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fputs.html var fd = _fileno(stream); return _write(fd, s, _strlen(s)); }, puts__deps: ['fputs', 'fputc', 'stdout'], puts: function(s) { // int puts(const char *s); // http://pubs.opengroup.org/onlinepubs/000095399/functions/puts.html // NOTE: puts() always writes an extra newline. var stdout = {{{ makeGetValue(makeGlobalUse('_stdout'), '0', 'void*') }}}; var ret = _fputs(s, stdout); if (ret < 0) { return ret; } else { var newlineRet = _fputc({{{ charCode('\n') }}}, stdout); return (newlineRet < 0) ? -1 : ret + 1; } }, fread__deps: ['$FS', 'read'], fread: function(ptr, size, nitems, stream) { // size_t fread(void *restrict ptr, size_t size, size_t nitems, FILE *restrict stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fread.html var bytesToRead = nitems * size; if (bytesToRead == 0) { return 0; } var bytesRead = 0; var streamObj = FS.getStreamFromPtr(stream); if (!streamObj) { ___setErrNo(ERRNO_CODES.EBADF); return 0; } while (streamObj.ungotten.length && bytesToRead > 0) { {{{ makeSetValue('ptr++', '0', 'streamObj.ungotten.pop()', 'i8') }}}; bytesToRead--; bytesRead++; } var err = _read(streamObj.fd, ptr, bytesToRead); if (err == -1) { if (streamObj) streamObj.error = true; return 0; } bytesRead += err; if (bytesRead < bytesToRead) streamObj.eof = true; return Math.floor(bytesRead / size); }, freopen__deps: ['$FS', 'fclose', 'fopen', '__setErrNo', '$ERRNO_CODES'], freopen: function(filename, mode, stream) { // FILE *freopen(const char *restrict filename, const char *restrict mode, FILE *restrict stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/freopen.html if (!filename) { var streamObj = FS.getStreamFromPtr(stream); if (!streamObj) { ___setErrNo(ERRNO_CODES.EBADF); return 0; } if (_freopen.buffer) _free(_freopen.buffer); filename = intArrayFromString(streamObj.path); filename = allocate(filename, 'i8', ALLOC_NORMAL); } _fclose(stream); return _fopen(filename, mode); }, fseek__deps: ['$FS', 'lseek', 'fileno'], fseek: function(stream, offset, whence) { // int fseek(FILE *stream, long offset, int whence); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fseek.html var fd = _fileno(stream); var ret = _lseek(fd, offset, whence); if (ret == -1) { return -1; } stream = FS.getStreamFromPtr(stream); stream.eof = false; return 0; }, fseeko: 'fseek', fsetpos__deps: ['$FS', 'lseek', '__setErrNo', '$ERRNO_CODES'], fsetpos: function(stream, pos) { // int fsetpos(FILE *stream, const fpos_t *pos); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fsetpos.html stream = FS.getStreamFromPtr(stream); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } if (FS.isChrdev(stream.node.mode)) { ___setErrNo(ERRNO_CODES.EPIPE); return -1; } stream.position = {{{ makeGetValue('pos', '0', 'i32') }}}; var state = {{{ makeGetValue('pos', Runtime.getNativeTypeSize('i32'), 'i32') }}}; stream.eof = Boolean(state & 1); stream.error = Boolean(state & 2); return 0; }, ftell__deps: ['$FS', '__setErrNo', '$ERRNO_CODES'], ftell: function(stream) { // long ftell(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/ftell.html stream = FS.getStreamFromPtr(stream); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } if (FS.isChrdev(stream.node.mode)) { ___setErrNo(ERRNO_CODES.ESPIPE); return -1; } else { return stream.position; } }, ftello: 'ftell', fwrite__deps: ['$FS', 'write', 'fileno'], fwrite: function(ptr, size, nitems, stream) { // size_t fwrite(const void *restrict ptr, size_t size, size_t nitems, FILE *restrict stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/fwrite.html var bytesToWrite = nitems * size; if (bytesToWrite == 0) return 0; var fd = _fileno(stream); var bytesWritten = _write(fd, ptr, bytesToWrite); if (bytesWritten == -1) { var streamObj = FS.getStreamFromPtr(stream); if (streamObj) streamObj.error = true; return 0; } else { return Math.floor(bytesWritten / size); } }, popen__deps: ['__setErrNo', '$ERRNO_CODES'], popen: function(command, mode) { // FILE *popen(const char *command, const char *mode); // http://pubs.opengroup.org/onlinepubs/000095399/functions/popen.html // We allow only one process, so no pipes. ___setErrNo(ERRNO_CODES.EMFILE); return 0; }, pclose__deps: ['__setErrNo', '$ERRNO_CODES'], pclose: function(stream) { // int pclose(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/pclose.html // We allow only one process, so no pipes. ___setErrNo(ERRNO_CODES.ECHILD); return -1; }, perror__deps: ['puts', 'fputs', 'fputc', 'strerror', '__errno_location'], perror: function(s) { // void perror(const char *s); // http://pubs.opengroup.org/onlinepubs/000095399/functions/perror.html var stdout = {{{ makeGetValue(makeGlobalUse('_stdout'), '0', 'void*') }}}; if (s) { _fputs(s, stdout); _fputc({{{ charCode(':') }}}, stdout); _fputc({{{ charCode(' ') }}}, stdout); } var errnum = {{{ makeGetValue('___errno_location()', '0', 'i32') }}}; _puts(_strerror(errnum)); }, remove__deps: ['unlink', 'rmdir'], remove: function(path) { // int remove(const char *path); // http://pubs.opengroup.org/onlinepubs/000095399/functions/remove.html var ret = _unlink(path); if (ret == -1) ret = _rmdir(path); return ret; }, rename__deps: ['__setErrNo', '$ERRNO_CODES'], rename: function(old_path, new_path) { // int rename(const char *old, const char *new); // http://pubs.opengroup.org/onlinepubs/000095399/functions/rename.html old_path = Pointer_stringify(old_path); new_path = Pointer_stringify(new_path); try { FS.rename(old_path, new_path); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, rewind__deps: ['$FS', 'fseek'], rewind: function(stream) { // void rewind(FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/rewind.html _fseek(stream, 0, 0); // SEEK_SET. var streamObj = FS.getStreamFromPtr(stream); if (streamObj) streamObj.error = false; }, setvbuf: function(stream, buf, type, size) { // int setvbuf(FILE *restrict stream, char *restrict buf, int type, size_t size); // http://pubs.opengroup.org/onlinepubs/000095399/functions/setvbuf.html // TODO: Implement custom buffering. return 0; }, setbuf__deps: ['setvbuf'], setbuf: function(stream, buf) { // void setbuf(FILE *restrict stream, char *restrict buf); // http://pubs.opengroup.org/onlinepubs/000095399/functions/setbuf.html if (buf) _setvbuf(stream, buf, 0, 8192); // _IOFBF, BUFSIZ. else _setvbuf(stream, buf, 2, 8192); // _IONBF, BUFSIZ. }, tmpnam__deps: ['$FS', 'malloc'], tmpnam: function(s, dir, prefix) { // char *tmpnam(char *s); // http://pubs.opengroup.org/onlinepubs/000095399/functions/tmpnam.html // NOTE: The dir and prefix arguments are for internal use only. var folder = FS.findObject(dir || '/tmp'); if (!folder || !folder.isFolder) { dir = '/tmp'; folder = FS.findObject(dir); if (!folder || !folder.isFolder) return 0; } var name = prefix || 'file'; do { name += String.fromCharCode(65 + Math.floor(Math.random() * 25)); } while (name in folder.contents); var result = dir + '/' + name; if (!_tmpnam.buffer) _tmpnam.buffer = _malloc(256); if (!s) s = _tmpnam.buffer; writeAsciiToMemory(result, s); return s; }, tempnam__deps: ['tmpnam'], tempnam: function(dir, pfx) { // char *tempnam(const char *dir, const char *pfx); // http://pubs.opengroup.org/onlinepubs/000095399/functions/tempnam.html return _tmpnam(0, Pointer_stringify(dir), Pointer_stringify(pfx)); }, tmpfile__deps: ['tmpnam', 'fopen'], tmpfile: function() { // FILE *tmpfile(void); // http://pubs.opengroup.org/onlinepubs/000095399/functions/tmpfile.html // TODO: Delete the created file on closing. if (_tmpfile.mode) { _tmpfile.mode = allocate(intArrayFromString('w+'), 'i8', ALLOC_NORMAL); } return _fopen(_tmpnam(0), _tmpfile.mode); }, ungetc__deps: ['$FS'], ungetc: function(c, stream) { // int ungetc(int c, FILE *stream); // http://pubs.opengroup.org/onlinepubs/000095399/functions/ungetc.html stream = FS.getStreamFromPtr(stream); if (!stream) { return -1; } if (c === {{{ cDefine('EOF') }}}) { // do nothing for EOF character return c; } c = unSign(c & 0xFF); stream.ungotten.push(c); stream.eof = false; return c; }, system__deps: ['__setErrNo', '$ERRNO_CODES'], system: function(command) { // int system(const char *command); // http://pubs.opengroup.org/onlinepubs/000095399/functions/system.html // Can't call external programs. ___setErrNo(ERRNO_CODES.EAGAIN); return -1; }, fscanf__deps: ['$FS', '_scanString', 'fgetc', 'ungetc'], fscanf: function(stream, format, varargs) { // int fscanf(FILE *restrict stream, const char *restrict format, ... ); // http://pubs.opengroup.org/onlinepubs/000095399/functions/scanf.html var streamObj = FS.getStreamFromPtr(stream); if (!streamObj) { return -1; } var buffer = []; function get() { var c = _fgetc(stream); buffer.push(c); return c; }; function unget() { _ungetc(buffer.pop(), stream); }; return __scanString(format, get, unget, varargs); }, scanf__deps: ['fscanf'], scanf: function(format, varargs) { // int scanf(const char *restrict format, ... ); // http://pubs.opengroup.org/onlinepubs/000095399/functions/scanf.html var stdin = {{{ makeGetValue(makeGlobalUse('_stdin'), '0', 'void*') }}}; return _fscanf(stdin, format, varargs); }, sscanf__deps: ['_scanString'], sscanf: function(s, format, varargs) { // int sscanf(const char *restrict s, const char *restrict format, ... ); // http://pubs.opengroup.org/onlinepubs/000095399/functions/scanf.html var index = 0; function get() { return {{{ makeGetValue('s', 'index++', 'i8') }}}; }; function unget() { index--; }; return __scanString(format, get, unget, varargs); }, snprintf__deps: ['_formatString', 'malloc'], snprintf: function(s, n, format, varargs) { // int snprintf(char *restrict s, size_t n, const char *restrict format, ...); // http://pubs.opengroup.org/onlinepubs/000095399/functions/printf.html var result = __formatString(format, varargs); var limit = (n === undefined) ? result.length : Math.min(result.length, Math.max(n - 1, 0)); if (s < 0) { s = -s; var buf = _malloc(limit+1); {{{ makeSetValue('s', '0', 'buf', 'i8*') }}}; s = buf; } for (var i = 0; i < limit; i++) { {{{ makeSetValue('s', 'i', 'result[i]', 'i8') }}}; } if (limit < n || (n === undefined)) {{{ makeSetValue('s', 'i', '0', 'i8') }}}; return result.length; }, fprintf__deps: ['fwrite', '_formatString'], fprintf: function(stream, format, varargs) { // int fprintf(FILE *restrict stream, const char *restrict format, ...); // http://pubs.opengroup.org/onlinepubs/000095399/functions/printf.html var result = __formatString(format, varargs); var stack = Runtime.stackSave(); var ret = _fwrite(allocate(result, 'i8', ALLOC_STACK), 1, result.length, stream); Runtime.stackRestore(stack); return ret; }, printf__deps: ['fprintf'], printf: function(format, varargs) { // int printf(const char *restrict format, ...); // http://pubs.opengroup.org/onlinepubs/000095399/functions/printf.html var stdout = {{{ makeGetValue(makeGlobalUse('_stdout'), '0', 'void*') }}}; return _fprintf(stdout, format, varargs); }, sprintf__deps: ['snprintf'], sprintf: function(s, format, varargs) { // int sprintf(char *restrict s, const char *restrict format, ...); // http://pubs.opengroup.org/onlinepubs/000095399/functions/printf.html return _snprintf(s, undefined, format, varargs); }, asprintf__deps: ['sprintf'], asprintf: function(s, format, varargs) { return _sprintf(-s, format, varargs); }, dprintf__deps: ['_formatString', 'write'], dprintf: function(fd, format, varargs) { var result = __formatString(format, varargs); var stack = Runtime.stackSave(); var ret = _write(fd, allocate(result, 'i8', ALLOC_STACK), result.length); Runtime.stackRestore(stack); }, #if TARGET_X86 // va_arg is just like our varargs vfprintf: 'fprintf', vsnprintf: 'snprintf', vprintf: 'printf', vsprintf: 'sprintf', vasprintf: 'asprintf', vdprintf: 'dprintf', vscanf: 'scanf', vfscanf: 'fscanf', vsscanf: 'sscanf', #endif #if TARGET_ASMJS_UNKNOWN_EMSCRIPTEN // convert va_arg into varargs vfprintf__deps: ['fprintf'], vfprintf: function(s, f, va_arg) { return _fprintf(s, f, {{{ makeGetValue('va_arg', 0, '*') }}}); }, vsnprintf__deps: ['snprintf'], vsnprintf: function(s, n, format, va_arg) { return _snprintf(s, n, format, {{{ makeGetValue('va_arg', 0, '*') }}}); }, vprintf__deps: ['printf'], vprintf: function(format, va_arg) { return _printf(format, {{{ makeGetValue('va_arg', 0, '*') }}}); }, vsprintf__deps: ['sprintf'], vsprintf: function(s, format, va_arg) { return _sprintf(s, format, {{{ makeGetValue('va_arg', 0, '*') }}}); }, vasprintf__deps: ['asprintf'], vasprintf: function(s, format, va_arg) { return _asprintf(s, format, {{{ makeGetValue('va_arg', 0, '*') }}}); }, vdprintf__deps: ['dprintf'], vdprintf: function (fd, format, va_arg) { return _dprintf(fd, format, {{{ makeGetValue('va_arg', 0, '*') }}}); }, vscanf__deps: ['scanf'], vscanf: function(format, va_arg) { return _scanf(format, {{{ makeGetValue('va_arg', 0, '*') }}}); }, vfscanf__deps: ['fscanf'], vfscanf: function(s, format, va_arg) { return _fscanf(s, format, {{{ makeGetValue('va_arg', 0, '*') }}}); }, vsscanf__deps: ['sscanf'], vsscanf: function(s, format, va_arg) { return _sscanf(s, format, {{{ makeGetValue('va_arg', 0, '*') }}}); }, #endif // ========================================================================== // sys/mman.h // ========================================================================== mmap__deps: ['$FS', 'malloc', 'memset'], mmap: function(start, num, prot, flags, fd, offset) { /* FIXME: Since mmap is normally implemented at the kernel level, * this implementation simply uses malloc underneath the call to * mmap. */ var MAP_PRIVATE = 2; var ptr; var allocated = false; if (!_mmap.mappings) _mmap.mappings = {}; if (fd == -1) { ptr = _malloc(num); if (!ptr) return -1; _memset(ptr, 0, num); allocated = true; } else { var info = FS.getStream(fd); if (!info) return -1; try { var res = FS.mmap(info, HEAPU8, start, num, offset, prot, flags); ptr = res.ptr; allocated = res.allocated; } catch (e) { FS.handleFSError(e); return -1; } } _mmap.mappings[ptr] = { malloc: ptr, num: num, allocated: allocated }; return ptr; }, munmap: function(start, num) { if (!_mmap.mappings) _mmap.mappings = {}; // TODO: support unmmap'ing parts of allocations var info = _mmap.mappings[start]; if (!info) return 0; if (num == info.num) { _mmap.mappings[start] = null; if (info.allocated) { _free(info.malloc); } } return 0; }, // TODO: Implement mremap. mprotect: function(addr, len, prot) { // int mprotect(void *addr, size_t len, int prot); // http://pubs.opengroup.org/onlinepubs/7908799/xsh/mprotect.html // Pretend to succeed return 0; }, msync: function(addr, len, flags) { // int msync(void *addr, size_t len, int flags); // http://pubs.opengroup.org/onlinepubs/009696799/functions/msync.html // Pretend to succeed return 0; }, // ========================================================================== // stdlib.h // ========================================================================== // tiny, fake malloc/free implementation. If the program actually uses malloc, // a compiled version will be used; this will only be used if the runtime // needs to allocate something, for which this is good enough if otherwise // no malloc is needed. malloc: function(bytes) { /* Over-allocate to make sure it is byte-aligned by 8. * This will leak memory, but this is only the dummy * implementation (replaced by dlmalloc normally) so * not an issue. */ #if ASSERTIONS == 2 Runtime.warnOnce('using stub malloc (reference it from C to have the real one included)'); #endif var ptr = Runtime.dynamicAlloc(bytes + 8); return (ptr+8) & 0xFFFFFFF8; }, free: function() { #if ASSERTIONS == 2 Runtime.warnOnce('using stub free (reference it from C to have the real one included)'); #endif }, calloc__deps: ['malloc'], calloc: function(n, s) { var ret = _malloc(n*s); _memset(ret, 0, n*s); return ret; }, abs: 'Math_abs', labs: 'Math_abs', #if USE_TYPED_ARRAYS == 2 llabs__deps: [function() { Types.preciseI64MathUsed = 1 }], llabs: function(lo, hi) { i64Math.abs(lo, hi); {{{ makeStructuralReturn([makeGetTempDouble(0, 'i32'), makeGetTempDouble(1, 'i32')]) }}}; }, #else llabs: function(lo, hi) { throw 'unsupported llabs'; }, #endif exit__deps: ['_exit'], exit: function(status) { __exit(status); }, _ZSt9terminatev__deps: ['exit'], _ZSt9terminatev: function() { _exit(-1234); }, atexit: function(func, arg) { __ATEXIT__.unshift({ func: func, arg: arg }); }, __cxa_atexit: 'atexit', abort: function() { Module['abort'](); }, realloc__deps: ['malloc', 'memcpy', 'free'], realloc: function(ptr, size) { // Very simple, inefficient implementation - if you use a real malloc, best to use // a real realloc with it if (!size) { if (ptr) _free(ptr); return 0; } var ret = _malloc(size); if (ptr) { _memcpy(ret, ptr, size); // might be some invalid reads _free(ptr); } return ret; }, _parseInt__deps: ['isspace', '__setErrNo', '$ERRNO_CODES'], _parseInt: function(str, endptr, base, min, max, bits, unsign) { // Skip space. while (_isspace({{{ makeGetValue('str', 0, 'i8') }}})) str++; // Check for a plus/minus sign. var multiplier = 1; if ({{{ makeGetValue('str', 0, 'i8') }}} == {{{ charCode('-') }}}) { multiplier = -1; str++; } else if ({{{ makeGetValue('str', 0, 'i8') }}} == {{{ charCode('+') }}}) { str++; } // Find base. var finalBase = base; if (!finalBase) { if ({{{ makeGetValue('str', 0, 'i8') }}} == {{{ charCode('0') }}}) { if ({{{ makeGetValue('str+1', 0, 'i8') }}} == {{{ charCode('x') }}} || {{{ makeGetValue('str+1', 0, 'i8') }}} == {{{ charCode('X') }}}) { finalBase = 16; str += 2; } else { finalBase = 8; str++; } } } else if (finalBase==16) { if ({{{ makeGetValue('str', 0, 'i8') }}} == {{{ charCode('0') }}}) { if ({{{ makeGetValue('str+1', 0, 'i8') }}} == {{{ charCode('x') }}} || {{{ makeGetValue('str+1', 0, 'i8') }}} == {{{ charCode('X') }}}) { str += 2; } } } if (!finalBase) finalBase = 10; // Get digits. var chr; var ret = 0; while ((chr = {{{ makeGetValue('str', 0, 'i8') }}}) != 0) { var digit = parseInt(String.fromCharCode(chr), finalBase); if (isNaN(digit)) { break; } else { ret = ret * finalBase + digit; str++; } } // Apply sign. ret *= multiplier; // Set end pointer. if (endptr) { {{{ makeSetValue('endptr', 0, 'str', '*') }}}; } // Unsign if needed. if (unsign) { if (Math.abs(ret) > max) { ret = max; ___setErrNo(ERRNO_CODES.ERANGE); } else { ret = unSign(ret, bits); } } // Validate range. if (ret > max || ret < min) { ret = ret > max ? max : min; ___setErrNo(ERRNO_CODES.ERANGE); } #if USE_TYPED_ARRAYS == 2 if (bits == 64) { {{{ makeStructuralReturn(splitI64('ret')) }}}; } #endif return ret; }, #if USE_TYPED_ARRAYS == 2 _parseInt64__deps: ['isspace', '__setErrNo', '$ERRNO_CODES', function() { Types.preciseI64MathUsed = 1 }], _parseInt64: function(str, endptr, base, min, max, unsign) { var isNegative = false; // Skip space. while (_isspace({{{ makeGetValue('str', 0, 'i8') }}})) str++; // Check for a plus/minus sign. if ({{{ makeGetValue('str', 0, 'i8') }}} == {{{ charCode('-') }}}) { str++; isNegative = true; } else if ({{{ makeGetValue('str', 0, 'i8') }}} == {{{ charCode('+') }}}) { str++; } // Find base. var ok = false; var finalBase = base; if (!finalBase) { if ({{{ makeGetValue('str', 0, 'i8') }}} == {{{ charCode('0') }}}) { if ({{{ makeGetValue('str+1', 0, 'i8') }}} == {{{ charCode('x') }}} || {{{ makeGetValue('str+1', 0, 'i8') }}} == {{{ charCode('X') }}}) { finalBase = 16; str += 2; } else { finalBase = 8; ok = true; // we saw an initial zero, perhaps the entire thing is just "0" } } } else if (finalBase==16) { if ({{{ makeGetValue('str', 0, 'i8') }}} == {{{ charCode('0') }}}) { if ({{{ makeGetValue('str+1', 0, 'i8') }}} == {{{ charCode('x') }}} || {{{ makeGetValue('str+1', 0, 'i8') }}} == {{{ charCode('X') }}}) { str += 2; } } } if (!finalBase) finalBase = 10; var start = str; // Get digits. var chr; while ((chr = {{{ makeGetValue('str', 0, 'i8') }}}) != 0) { var digit = parseInt(String.fromCharCode(chr), finalBase); if (isNaN(digit)) { break; } else { str++; ok = true; } } if (!ok) { ___setErrNo(ERRNO_CODES.EINVAL); {{{ makeStructuralReturn(['0', '0']) }}}; } // Set end pointer. if (endptr) { {{{ makeSetValue('endptr', 0, 'str', '*') }}}; } try { var numberString = isNegative ? '-'+Pointer_stringify(start, str - start) : Pointer_stringify(start, str - start); i64Math.fromString(numberString, finalBase, min, max, unsign); } catch(e) { ___setErrNo(ERRNO_CODES.ERANGE); // not quite correct } {{{ makeStructuralReturn([makeGetTempDouble(0, 'i32'), makeGetTempDouble(1, 'i32')]) }}}; }, #endif environ: 'allocate(1, "i32*", ALLOC_STATIC)', __environ__deps: ['environ'], __environ: '_environ', __buildEnvironment__deps: ['__environ'], __buildEnvironment: function(env) { // WARNING: Arbitrary limit! var MAX_ENV_VALUES = 64; var TOTAL_ENV_SIZE = 1024; // Statically allocate memory for the environment. var poolPtr; var envPtr; if (!___buildEnvironment.called) { ___buildEnvironment.called = true; // Set default values. Use string keys for Closure Compiler compatibility. ENV['USER'] = 'root'; ENV['PATH'] = '/'; ENV['PWD'] = '/'; ENV['HOME'] = '/home/emscripten'; ENV['LANG'] = 'en_US.UTF-8'; ENV['_'] = './this.program'; // Allocate memory. poolPtr = allocate(TOTAL_ENV_SIZE, 'i8', ALLOC_STATIC); envPtr = allocate(MAX_ENV_VALUES * {{{ Runtime.QUANTUM_SIZE }}}, 'i8*', ALLOC_STATIC); {{{ makeSetValue('envPtr', '0', 'poolPtr', 'i8*') }}}; {{{ makeSetValue(makeGlobalUse('_environ'), 0, 'envPtr', 'i8*') }}}; } else { envPtr = {{{ makeGetValue(makeGlobalUse('_environ'), '0', 'i8**') }}}; poolPtr = {{{ makeGetValue('envPtr', '0', 'i8*') }}}; } // Collect key=value lines. var strings = []; var totalSize = 0; for (var key in env) { if (typeof env[key] === 'string') { var line = key + '=' + env[key]; strings.push(line); totalSize += line.length; } } if (totalSize > TOTAL_ENV_SIZE) { throw new Error('Environment size exceeded TOTAL_ENV_SIZE!'); } // Make new. var ptrSize = {{{ Runtime.getNativeTypeSize('i8*') }}}; for (var i = 0; i < strings.length; i++) { var line = strings[i]; writeAsciiToMemory(line, poolPtr); {{{ makeSetValue('envPtr', 'i * ptrSize', 'poolPtr', 'i8*') }}}; poolPtr += line.length + 1; } {{{ makeSetValue('envPtr', 'strings.length * ptrSize', '0', 'i8*') }}}; }, $ENV__deps: ['__buildEnvironment'], $ENV__postset: '___buildEnvironment(ENV);', $ENV: {}, getenv__deps: ['$ENV'], getenv: function(name) { // char *getenv(const char *name); // http://pubs.opengroup.org/onlinepubs/009695399/functions/getenv.html if (name === 0) return 0; name = Pointer_stringify(name); if (!ENV.hasOwnProperty(name)) return 0; if (_getenv.ret) _free(_getenv.ret); _getenv.ret = allocate(intArrayFromString(ENV[name]), 'i8', ALLOC_NORMAL); return _getenv.ret; }, clearenv__deps: ['$ENV', '__buildEnvironment'], clearenv: function(name) { // int clearenv (void); // http://www.gnu.org/s/hello/manual/libc/Environment-Access.html#index-clearenv-3107 ENV = {}; ___buildEnvironment(ENV); return 0; }, setenv__deps: ['$ENV', '__buildEnvironment', '$ERRNO_CODES', '__setErrNo'], setenv: function(envname, envval, overwrite) { // int setenv(const char *envname, const char *envval, int overwrite); // http://pubs.opengroup.org/onlinepubs/009695399/functions/setenv.html if (envname === 0) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } var name = Pointer_stringify(envname); var val = Pointer_stringify(envval); if (name === '' || name.indexOf('=') !== -1) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } if (ENV.hasOwnProperty(name) && !overwrite) return 0; ENV[name] = val; ___buildEnvironment(ENV); return 0; }, unsetenv__deps: ['$ENV', '__buildEnvironment', '$ERRNO_CODES', '__setErrNo'], unsetenv: function(name) { // int unsetenv(const char *name); // http://pubs.opengroup.org/onlinepubs/009695399/functions/unsetenv.html if (name === 0) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } name = Pointer_stringify(name); if (name === '' || name.indexOf('=') !== -1) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } if (ENV.hasOwnProperty(name)) { delete ENV[name]; ___buildEnvironment(ENV); } return 0; }, putenv__deps: ['$ENV', '__buildEnvironment', '$ERRNO_CODES', '__setErrNo'], putenv: function(string) { // int putenv(char *string); // http://pubs.opengroup.org/onlinepubs/009695399/functions/putenv.html // WARNING: According to the standard (and the glibc implementation), the // string is taken by reference so future changes are reflected. // We copy it instead, possibly breaking some uses. if (string === 0) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } string = Pointer_stringify(string); var splitPoint = string.indexOf('=') if (string === '' || string.indexOf('=') === -1) { ___setErrNo(ERRNO_CODES.EINVAL); return -1; } var name = string.slice(0, splitPoint); var value = string.slice(splitPoint + 1); if (!(name in ENV) || ENV[name] !== value) { ENV[name] = value; ___buildEnvironment(ENV); } return 0; }, getloadavg: function(loadavg, nelem) { // int getloadavg(double loadavg[], int nelem); // http://linux.die.net/man/3/getloadavg var limit = Math.min(nelem, 3); var doubleSize = {{{ Runtime.getNativeTypeSize('double') }}}; for (var i = 0; i < limit; i++) { {{{ makeSetValue('loadavg', 'i * doubleSize', '0.1', 'double') }}}; } return limit; }, __rand_seed: 'allocate([0x0273459b, 0, 0, 0], "i32", ALLOC_STATIC)', srand__deps: ['__rand_seed'], srand: function(seed) { {{{ makeSetValue('___rand_seed', 0, 'seed', 'i32') }}} }, rand_r__sig: 'ii', rand_r__asm: true, rand_r: function(seedp) { seedp = seedp|0; var val = 0; val = ((Math_imul({{{ makeGetValueAsm('seedp', 0, 'i32') }}}, 31010991)|0) + 0x676e6177 ) & {{{ cDefine('RAND_MAX') }}}; // assumes RAND_MAX is in bit mask form (power of 2 minus 1) {{{ makeSetValueAsm('seedp', 0, 'val', 'i32') }}}; return val|0; }, rand__sig: 'i', rand__asm: true, rand__deps: ['rand_r', '__rand_seed'], rand: function() { return _rand_r(___rand_seed)|0; }, drand48: function() { return Math.random(); }, realpath__deps: ['$FS', '__setErrNo'], realpath: function(file_name, resolved_name) { // char *realpath(const char *restrict file_name, char *restrict resolved_name); // http://pubs.opengroup.org/onlinepubs/009604499/functions/realpath.html var absolute = FS.analyzePath(Pointer_stringify(file_name)); if (absolute.error) { ___setErrNo(absolute.error); return 0; } else { var size = Math.min(4095, absolute.path.length); // PATH_MAX - 1. for (var i = 0; i < size; i++) { {{{ makeSetValue('resolved_name', 'i', 'absolute.path.charCodeAt(i)', 'i8') }}}; } {{{ makeSetValue('resolved_name', 'size', '0', 'i8') }}}; return resolved_name; } }, arc4random: 'rand', // ========================================================================== // string.h // ========================================================================== memcpy__inline: function(dest, src, num, align) { var ret = ''; #if ASSERTIONS #if ASM_JS == 0 ret += "assert(" + num + " % 1 === 0);"; //, 'memcpy given ' + " + num + " + ' bytes to copy. Problem with quantum=1 corrections perhaps?');"; #endif #endif ret += makeCopyValues(dest, src, num, 'null', null, align); return ret; }, emscripten_memcpy_big: function(dest, src, num) { HEAPU8.set(HEAPU8.subarray(src, src+num), dest); return dest; }, memcpy__asm: true, memcpy__sig: 'iiii', memcpy__deps: ['emscripten_memcpy_big'], memcpy: function(dest, src, num) { dest = dest|0; src = src|0; num = num|0; var ret = 0; if ((num|0) >= 4096) return _emscripten_memcpy_big(dest|0, src|0, num|0)|0; ret = dest|0; if ((dest&3) == (src&3)) { while (dest & 3) { if ((num|0) == 0) return ret|0; {{{ makeSetValueAsm('dest', 0, makeGetValueAsm('src', 0, 'i8'), 'i8') }}}; dest = (dest+1)|0; src = (src+1)|0; num = (num-1)|0; } while ((num|0) >= 4) { {{{ makeSetValueAsm('dest', 0, makeGetValueAsm('src', 0, 'i32'), 'i32') }}}; dest = (dest+4)|0; src = (src+4)|0; num = (num-4)|0; } } while ((num|0) > 0) { {{{ makeSetValueAsm('dest', 0, makeGetValueAsm('src', 0, 'i8'), 'i8') }}}; dest = (dest+1)|0; src = (src+1)|0; num = (num-1)|0; } return ret|0; }, llvm_memcpy_i32: 'memcpy', llvm_memcpy_i64: 'memcpy', llvm_memcpy_p0i8_p0i8_i32: 'memcpy', llvm_memcpy_p0i8_p0i8_i64: 'memcpy', memmove__sig: 'iiii', memmove__asm: true, memmove__deps: ['memcpy'], memmove: function(dest, src, num) { dest = dest|0; src = src|0; num = num|0; var ret = 0; if (((src|0) < (dest|0)) & ((dest|0) < ((src + num)|0))) { // Unlikely case: Copy backwards in a safe manner ret = dest; src = (src + num)|0; dest = (dest + num)|0; while ((num|0) > 0) { dest = (dest - 1)|0; src = (src - 1)|0; num = (num - 1)|0; {{{ makeSetValueAsm('dest', 0, makeGetValueAsm('src', 0, 'i8'), 'i8') }}}; } dest = ret; } else { _memcpy(dest, src, num) | 0; } return dest | 0; }, llvm_memmove_i32: 'memmove', llvm_memmove_i64: 'memmove', llvm_memmove_p0i8_p0i8_i32: 'memmove', llvm_memmove_p0i8_p0i8_i64: 'memmove', memset__inline: function(ptr, value, num, align) { return makeSetValues(ptr, 0, value, 'null', num, align); }, memset__sig: 'iiii', memset__asm: true, memset: function(ptr, value, num) { #if USE_TYPED_ARRAYS == 2 ptr = ptr|0; value = value|0; num = num|0; var stop = 0, value4 = 0, stop4 = 0, unaligned = 0; stop = (ptr + num)|0; if ((num|0) >= {{{ Math.round(2.5*UNROLL_LOOP_MAX) }}}) { // This is unaligned, but quite large, so work hard to get to aligned settings value = value & 0xff; unaligned = ptr & 3; value4 = value | (value << 8) | (value << 16) | (value << 24); stop4 = stop & ~3; if (unaligned) { unaligned = (ptr + 4 - unaligned)|0; while ((ptr|0) < (unaligned|0)) { // no need to check for stop, since we have large num {{{ makeSetValueAsm('ptr', 0, 'value', 'i8') }}}; ptr = (ptr+1)|0; } } while ((ptr|0) < (stop4|0)) { {{{ makeSetValueAsm('ptr', 0, 'value4', 'i32') }}}; ptr = (ptr+4)|0; } } while ((ptr|0) < (stop|0)) { {{{ makeSetValueAsm('ptr', 0, 'value', 'i8') }}}; ptr = (ptr+1)|0; } return (ptr-num)|0; #else {{{ makeSetValues('ptr', '0', 'value', 'null', 'num') }}}; return ptr; #endif }, llvm_memset_i32: 'memset', llvm_memset_p0i8_i32: 'memset', llvm_memset_p0i8_i64: 'memset', strlen__sig: 'ii', strlen__asm: true, strlen: function(ptr) { ptr = ptr|0; var curr = 0; curr = ptr; while ({{{ makeGetValueAsm('curr', '0', 'i8') }}}) { curr = (curr + 1)|0; } return (curr - ptr)|0; }, strcpy__asm: true, strcpy__sig: 'iii', strcpy: function(pdest, psrc) { pdest = pdest|0; psrc = psrc|0; var i = 0; do { {{{ makeCopyValues('(pdest+i)|0', '(psrc+i)|0', 1, 'i8', null, 1) }}}; i = (i+1)|0; } while ({{{ makeGetValueAsm('psrc', 'i-1', 'i8') }}}); return pdest|0; }, strncpy__asm: true, strncpy__sig: 'iiii', strncpy: function(pdest, psrc, num) { pdest = pdest|0; psrc = psrc|0; num = num|0; var padding = 0, curr = 0, i = 0; while ((i|0) < (num|0)) { curr = padding ? 0 : {{{ makeGetValueAsm('psrc', 'i', 'i8') }}}; {{{ makeSetValue('pdest', 'i', 'curr', 'i8') }}}; padding = padding ? 1 : ({{{ makeGetValueAsm('psrc', 'i', 'i8') }}} == 0); i = (i+1)|0; } return pdest|0; }, strcat__asm: true, strcat__sig: 'iii', strcat__deps: ['strlen'], strcat: function(pdest, psrc) { pdest = pdest|0; psrc = psrc|0; var i = 0; var pdestEnd = 0; pdestEnd = (pdest + (_strlen(pdest)|0))|0; do { {{{ makeCopyValues('pdestEnd+i', 'psrc+i', 1, 'i8', null, 1) }}}; i = (i+1)|0; } while ({{{ makeGetValueAsm('psrc', 'i-1', 'i8') }}}); return pdest|0; }, strerror_r__deps: ['$ERRNO_CODES', '$ERRNO_MESSAGES', '__setErrNo'], strerror_r: function(errnum, strerrbuf, buflen) { if (errnum in ERRNO_MESSAGES) { if (ERRNO_MESSAGES[errnum].length > buflen - 1) { return ___setErrNo(ERRNO_CODES.ERANGE); } else { var msg = ERRNO_MESSAGES[errnum]; writeAsciiToMemory(msg, strerrbuf); return 0; } } else { return ___setErrNo(ERRNO_CODES.EINVAL); } }, strerror__deps: ['strerror_r', 'malloc'], strerror: function(errnum) { if (!_strerror.buffer) _strerror.buffer = _malloc(256); _strerror_r(errnum, _strerror.buffer, 256); return _strerror.buffer; }, // ========================================================================== // ctype.h // ========================================================================== // Lookup tables for glibc ctype implementation. __ctype_b_loc__deps: ['malloc'], __ctype_b_loc: function() { // http://refspecs.freestandards.org/LSB_3.0.0/LSB-Core-generic/LSB-Core-generic/baselib---ctype-b-loc.html var me = ___ctype_b_loc; if (!me.ret) { var values = [ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,2,2,2,2,2,2,2,2,2,8195,8194,8194,8194,8194,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,24577,49156,49156,49156, 49156,49156,49156,49156,49156,49156,49156,49156,49156,49156,49156,49156,55304,55304,55304,55304,55304,55304,55304,55304, 55304,55304,49156,49156,49156,49156,49156,49156,49156,54536,54536,54536,54536,54536,54536,50440,50440,50440,50440,50440, 50440,50440,50440,50440,50440,50440,50440,50440,50440,50440,50440,50440,50440,50440,50440,49156,49156,49156,49156,49156, 49156,54792,54792,54792,54792,54792,54792,50696,50696,50696,50696,50696,50696,50696,50696,50696,50696,50696,50696,50696, 50696,50696,50696,50696,50696,50696,50696,49156,49156,49156,49156,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ]; var i16size = {{{ Runtime.getNativeTypeSize('i16') }}}; var arr = _malloc(values.length * i16size); for (var i = 0; i < values.length; i++) { {{{ makeSetValue('arr', 'i * i16size', 'values[i]', 'i16') }}}; } me.ret = allocate([arr + 128 * i16size], 'i16*', ALLOC_NORMAL); } return me.ret; }, __ctype_tolower_loc__deps: ['malloc'], __ctype_tolower_loc: function() { // http://refspecs.freestandards.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/libutil---ctype-tolower-loc.html var me = ___ctype_tolower_loc; if (!me.ret) { var values = [ 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157, 158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187, 188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217, 218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247, 248,249,250,251,252,253,254,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32, 33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,97,98,99,100,101,102,103, 104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,91,92,93,94,95,96,97,98,99,100,101,102,103, 104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133, 134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163, 164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193, 194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223, 224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253, 254,255 ]; var i32size = {{{ Runtime.getNativeTypeSize('i32') }}}; var arr = _malloc(values.length * i32size); for (var i = 0; i < values.length; i++) { {{{ makeSetValue('arr', 'i * i32size', 'values[i]', 'i32') }}}; } me.ret = allocate([arr + 128 * i32size], 'i32*', ALLOC_NORMAL); } return me.ret; }, __ctype_toupper_loc__deps: ['malloc'], __ctype_toupper_loc: function() { // http://refspecs.freestandards.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/libutil---ctype-toupper-loc.html var me = ___ctype_toupper_loc; if (!me.ret) { var values = [ 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157, 158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187, 188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217, 218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247, 248,249,250,251,252,253,254,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32, 33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80, 81,82,83,84,85,86,87,88,89,90,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144, 145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174, 175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204, 205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234, 235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255 ]; var i32size = {{{ Runtime.getNativeTypeSize('i32') }}}; var arr = _malloc(values.length * i32size); for (var i = 0; i < values.length; i++) { {{{ makeSetValue('arr', 'i * i32size', 'values[i]', 'i32') }}}; } me.ret = allocate([arr + 128 * i32size], 'i32*', ALLOC_NORMAL); } return me.ret; }, // ========================================================================== // GCC/LLVM specifics // ========================================================================== __builtin_prefetch: function(){}, // ========================================================================== // LLVM specifics // ========================================================================== llvm_va_start__inline: function(ptr) { // varargs - we received a pointer to the varargs as a final 'extra' parameter called 'varrp' #if TARGET_X86 return makeSetValue(ptr, 0, 'varrp', 'void*'); #endif #if TARGET_ASMJS_UNKNOWN_EMSCRIPTEN // 2-word structure: struct { void* start; void* currentOffset; } return makeSetValue(ptr, 0, 'varrp', 'void*') + ';' + makeSetValue(ptr, Runtime.QUANTUM_SIZE, 0, 'void*'); #endif }, llvm_va_end: function() {}, llvm_va_copy: function(ppdest, ppsrc) { // copy the list start {{{ makeCopyValues('ppdest', 'ppsrc', Runtime.QUANTUM_SIZE, 'null', null, 1) }}}; // copy the list's current offset (will be advanced with each call to va_arg) {{{ makeCopyValues('(ppdest+'+Runtime.QUANTUM_SIZE+')', '(ppsrc+'+Runtime.QUANTUM_SIZE+')', Runtime.QUANTUM_SIZE, 'null', null, 1) }}}; }, llvm_bswap_i16__asm: true, llvm_bswap_i16__sig: 'ii', llvm_bswap_i16: function(x) { x = x|0; return (((x&0xff)<<8) | ((x>>8)&0xff))|0; }, llvm_bswap_i32__asm: true, llvm_bswap_i32__sig: 'ii', llvm_bswap_i32: function(x) { x = x|0; return (((x&0xff)<<24) | (((x>>8)&0xff)<<16) | (((x>>16)&0xff)<<8) | (x>>>24))|0; }, llvm_bswap_i64__deps: ['llvm_bswap_i32'], llvm_bswap_i64: function(l, h) { var retl = _llvm_bswap_i32(h)>>>0; var reth = _llvm_bswap_i32(l)>>>0; #if USE_TYPED_ARRAYS == 2 {{{ makeStructuralReturn(['retl', 'reth']) }}}; #else throw 'unsupported'; #endif }, llvm_ctlz_i32__deps: [function() { function ctlz(x) { for (var i = 0; i < 8; i++) { if (x & (1 << (7-i))) { return i; } } return 8; } return 'var ctlz_i8 = allocate([' + range(256).map(function(x) { return ctlz(x) }).join(',') + '], "i8", ALLOC_STATIC);'; }], llvm_ctlz_i32__asm: true, llvm_ctlz_i32__sig: 'ii', llvm_ctlz_i32: function(x) { x = x|0; var ret = 0; ret = {{{ makeGetValueAsm('ctlz_i8', 'x >>> 24', 'i8') }}}; if ((ret|0) < 8) return ret|0; ret = {{{ makeGetValueAsm('ctlz_i8', '(x >> 16)&0xff', 'i8') }}}; if ((ret|0) < 8) return (ret + 8)|0; ret = {{{ makeGetValueAsm('ctlz_i8', '(x >> 8)&0xff', 'i8') }}}; if ((ret|0) < 8) return (ret + 16)|0; return ({{{ makeGetValueAsm('ctlz_i8', 'x&0xff', 'i8') }}} + 24)|0; }, llvm_ctlz_i64__deps: ['llvm_ctlz_i32'], llvm_ctlz_i64: function(l, h) { var ret = _llvm_ctlz_i32(h); if (ret == 32) ret += _llvm_ctlz_i32(l); #if USE_TYPED_ARRAYS == 2 {{{ makeStructuralReturn(['ret', '0']) }}}; #else return ret; #endif }, llvm_cttz_i32__deps: [function() { function cttz(x) { for (var i = 0; i < 8; i++) { if (x & (1 << i)) { return i; } } return 8; } return 'var cttz_i8 = allocate([' + range(256).map(function(x) { return cttz(x) }).join(',') + '], "i8", ALLOC_STATIC);'; }], llvm_cttz_i32__asm: true, llvm_cttz_i32__sig: 'ii', llvm_cttz_i32: function(x) { x = x|0; var ret = 0; ret = {{{ makeGetValueAsm('cttz_i8', 'x & 0xff', 'i8') }}}; if ((ret|0) < 8) return ret|0; ret = {{{ makeGetValueAsm('cttz_i8', '(x >> 8)&0xff', 'i8') }}}; if ((ret|0) < 8) return (ret + 8)|0; ret = {{{ makeGetValueAsm('cttz_i8', '(x >> 16)&0xff', 'i8') }}}; if ((ret|0) < 8) return (ret + 16)|0; return ({{{ makeGetValueAsm('cttz_i8', 'x >>> 24', 'i8') }}} + 24)|0; }, llvm_cttz_i64__deps: ['llvm_cttz_i32'], llvm_cttz_i64: function(l, h) { var ret = _llvm_cttz_i32(l); if (ret == 32) ret += _llvm_cttz_i32(h); #if USE_TYPED_ARRAYS == 2 {{{ makeStructuralReturn(['ret', '0']) }}}; #else return ret; #endif }, llvm_ctpop_i32: function(x) { var ret = 0; while (x) { if (x&1) ret++; x >>>= 1; } return ret; }, llvm_ctpop_i64__deps: ['llvm_ctpop_i32'], llvm_ctpop_i64: function(l, h) { return _llvm_ctpop_i32(l) + _llvm_ctpop_i32(h); }, llvm_trap: function() { abort('trap!'); }, llvm_prefetch: function(){}, __assert_fail: function(condition, filename, line, func) { ABORT = true; throw 'Assertion failed: ' + Pointer_stringify(condition) + ', at: ' + [filename ? Pointer_stringify(filename) : 'unknown filename', line, func ? Pointer_stringify(func) : 'unknown function'] + ' at ' + stackTrace(); }, __assert_func: function(filename, line, func, condition) { throw 'Assertion failed: ' + (condition ? Pointer_stringify(condition) : 'unknown condition') + ', at: ' + [filename ? Pointer_stringify(filename) : 'unknown filename', line, func ? Pointer_stringify(func) : 'unknown function'] + ' at ' + stackTrace(); }, __cxa_guard_acquire: function(variable) { if (!{{{ makeGetValue(0, 'variable', 'i8', null, null, 1) }}}) { // ignore SAFE_HEAP stuff because llvm mixes i64 and i8 here {{{ makeSetValue(0, 'variable', '1', 'i8') }}}; return 1; } return 0; }, __cxa_guard_release: function() {}, __cxa_guard_abort: function() {}, #if USE_TYPED_ARRAYS != 2 _ZTVN10__cxxabiv119__pointer_type_infoE: [0], // is a pointer _ZTVN10__cxxabiv117__class_type_infoE: [1], // no inherited classes _ZTVN10__cxxabiv120__si_class_type_infoE: [2], // yes inherited classes #endif // We store an extra header in front of the exception data provided // by the user. // This header is: // * type // * destructor function pointer // This is then followed by the actual exception data. __cxa_exception_header_size: 8, __cxa_last_thrown_exception: 0, __cxa_caught_exceptions: [], // Exceptions __cxa_allocate_exception__deps: ['__cxa_exception_header_size', 'malloc'], __cxa_allocate_exception: function(size) { var ptr = _malloc(size + ___cxa_exception_header_size); return ptr + ___cxa_exception_header_size; }, __cxa_free_exception__deps: ['__cxa_exception_header_size', 'free'], __cxa_free_exception: function(ptr) { try { return _free(ptr - ___cxa_exception_header_size); } catch(e) { // XXX FIXME #if ASSERTIONS Module.printErr('exception during cxa_free_exception: ' + e); #endif } }, // Here, we throw an exception after recording a couple of values that we need to remember // We also remember that it was the last exception thrown as we need to know that later. __cxa_throw__sig: 'viii', __cxa_throw__deps: ['_ZSt18uncaught_exceptionv', '__cxa_find_matching_catch', '__cxa_exception_header_size', '__cxa_last_thrown_exception'], __cxa_throw: function(ptr, type, destructor) { if (!___cxa_throw.initialized) { try { {{{ makeSetValue(makeGlobalUse('__ZTVN10__cxxabiv119__pointer_type_infoE'), '0', '0', 'i32') }}}; // Workaround for libcxxabi integration bug } catch(e){} try { {{{ makeSetValue(makeGlobalUse('__ZTVN10__cxxabiv117__class_type_infoE'), '0', '1', 'i32') }}}; // Workaround for libcxxabi integration bug } catch(e){} try { {{{ makeSetValue(makeGlobalUse('__ZTVN10__cxxabiv120__si_class_type_infoE'), '0', '2', 'i32') }}}; // Workaround for libcxxabi integration bug } catch(e){} ___cxa_throw.initialized = true; } #if EXCEPTION_DEBUG Module.printErr('Compiled code throwing an exception, ' + [ptr,type,destructor] + ', at ' + stackTrace()); #endif var header = ptr - ___cxa_exception_header_size; {{{ makeSetValue('header', 0, 'type', 'void*') }}}; {{{ makeSetValue('header', 4, 'destructor', 'void*') }}}; ___cxa_last_thrown_exception = ptr; if (!("uncaught_exception" in __ZSt18uncaught_exceptionv)) { __ZSt18uncaught_exceptionv.uncaught_exception = 1; } else { __ZSt18uncaught_exceptionv.uncaught_exception++; } {{{ makeThrow('ptr') }}} }, // This exception will be caught twice, but while begin_catch runs twice, // we early-exit from end_catch when the exception has been rethrown, so // pop that here from the caught exceptions. __cxa_rethrow__deps: ['__cxa_end_catch', '__cxa_caught_exceptions'], __cxa_rethrow: function() { ___cxa_end_catch.rethrown = true; var ptr = ___cxa_caught_exceptions.pop(); {{{ makeThrow('ptr') }}} }, llvm_eh_exception__deps: ['__cxa_last_thrown_exception'], llvm_eh_exception: function() { return ___cxa_last_thrown_exception; }, llvm_eh_selector__jsargs: true, llvm_eh_selector__deps: ['__cxa_last_thrown_exception'], llvm_eh_selector: function(unused_exception_value, personality/*, varargs*/) { var type = ___cxa_last_thrown_exception; for (var i = 2; i < arguments.length; i++) { if (arguments[i] == type) return type; } return 0; }, llvm_eh_typeid_for: function(type) { return type; }, // Note that we push the last thrown exception here rather than the ptr. // This is because if the exception is a pointer (as in test 3 of test_exceptions_typed), // we don't actually get the value that we allocated, but something else. Easiest // to remember that the last exception thrown is going to be the first to be caught, // so just use that value instead as it is what we're really looking for. __cxa_begin_catch__deps: ['_ZSt18uncaught_exceptionv', '__cxa_caught_exceptions', '__cxa_last_thrown_exception'], __cxa_begin_catch: function(ptr) { __ZSt18uncaught_exceptionv.uncaught_exception--; ___cxa_caught_exceptions.push(___cxa_last_thrown_exception); return ptr; }, // We're done with a catch. Now, we can run the destructor if there is one // and free the exception. Note that if the dynCall on the destructor fails // due to calling apply on undefined, that means that the destructor is // an invalid index into the FUNCTION_TABLE, so something has gone wrong. __cxa_end_catch__deps: ['__cxa_free_exception', '__cxa_last_thrown_exception', '__cxa_exception_header_size', '__cxa_caught_exceptions'], __cxa_end_catch: function() { if (___cxa_end_catch.rethrown) { ___cxa_end_catch.rethrown = false; return; } // Clear state flag. #if ASM_JS asm['setThrew'](0); #else __THREW__ = 0; #endif // Call destructor if one is registered then clear it. var ptr = ___cxa_caught_exceptions.pop(); if (ptr) { header = ptr - ___cxa_exception_header_size; var destructor = {{{ makeGetValue('header', 4, 'void*') }}}; if (destructor) { Runtime.dynCall('vi', destructor, [ptr]); {{{ makeSetValue('header', 4, '0', 'i32') }}}; } ___cxa_free_exception(ptr); ___cxa_last_thrown_exception = 0; } }, __cxa_get_exception_ptr: function(ptr) { return ptr; }, _ZSt18uncaught_exceptionv: function() { // std::uncaught_exception() return !!__ZSt18uncaught_exceptionv.uncaught_exception; }, __cxa_uncaught_exception__deps: ['_ZSt18uncaught_exceptionv'], __cxa_uncaught_exception: function() { return !!__ZSt18uncaught_exceptionv.uncaught_exception; }, __cxa_call_unexpected: function(exception) { Module.printErr('Unexpected exception thrown, this is not properly supported - aborting'); ABORT = true; throw exception; }, terminate: '__cxa_call_unexpected', __gxx_personality_v0__deps: ['_ZSt18uncaught_exceptionv', '__cxa_find_matching_catch'], __gxx_personality_v0: function() { }, __cxa_is_number_type: function(type) { var isNumber = false; try { if (type == {{{ makeGlobalUse('__ZTIi') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIj') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIl') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIm') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIx') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIy') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIf') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTId') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIe') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIc') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIa') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIh') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIs') }}}) isNumber = true } catch(e){} try { if (type == {{{ makeGlobalUse('__ZTIt') }}}) isNumber = true } catch(e){} return isNumber; }, // Finds a suitable catch clause for when an exception is thrown. // In normal compilers, this functionality is handled by the C++ // 'personality' routine. This is passed a fairly complex structure // relating to the context of the exception and makes judgements // about how to handle it. Some of it is about matching a suitable // catch clause, and some of it is about unwinding. We already handle // unwinding using 'if' blocks around each function, so the remaining // functionality boils down to picking a suitable 'catch' block. // We'll do that here, instead, to keep things simpler. __cxa_find_matching_catch__deps: ['__cxa_does_inherit', '__cxa_is_number_type', '__resumeException', '__cxa_last_thrown_exception', '__cxa_exception_header_size'], __cxa_find_matching_catch: function(thrown, throwntype) { if (thrown == -1) thrown = ___cxa_last_thrown_exception; header = thrown - ___cxa_exception_header_size; if (throwntype == -1) throwntype = {{{ makeGetValue('header', 0, 'void*') }}}; var typeArray = Array.prototype.slice.call(arguments, 2); // If throwntype is a pointer, this means a pointer has been // thrown. When a pointer is thrown, actually what's thrown // is a pointer to the pointer. We'll dereference it. if (throwntype != 0 && !___cxa_is_number_type(throwntype)) { var throwntypeInfoAddr= {{{ makeGetValue('throwntype', '0', '*') }}} - {{{ Runtime.QUANTUM_SIZE*2 }}}; var throwntypeInfo= {{{ makeGetValue('throwntypeInfoAddr', '0', '*') }}}; if (throwntypeInfo == 0) thrown = {{{ makeGetValue('thrown', '0', '*') }}}; } // The different catch blocks are denoted by different types. // Due to inheritance, those types may not precisely match the // type of the thrown object. Find one which matches, and // return the type of the catch block which should be called. for (var i = 0; i < typeArray.length; i++) { if (___cxa_does_inherit(typeArray[i], throwntype, thrown)) {{{ makeStructuralReturn(['thrown', 'typeArray[i]']) }}}; } // Shouldn't happen unless we have bogus data in typeArray // or encounter a type for which emscripten doesn't have suitable // typeinfo defined. Best-efforts match just in case. {{{ makeStructuralReturn(['thrown', 'throwntype']) }}}; }, __resumeException__deps: [function() { Functions.libraryFunctions['__resumeException'] = 1 }, '__cxa_last_thrown_exception'], // will be called directly from compiled code __resumeException: function(ptr) { #if EXCEPTION_DEBUG Module.print("Resuming exception"); #endif if (!___cxa_last_thrown_exception) { ___cxa_last_thrown_exception = ptr; } {{{ makeThrow('ptr') }}} }, // Recursively walks up the base types of 'possibilityType' // to see if any of them match 'definiteType'. __cxa_does_inherit__deps: ['__cxa_is_number_type'], __cxa_does_inherit: function(definiteType, possibilityType, possibility) { if (possibility == 0) return false; if (possibilityType == 0 || possibilityType == definiteType) return true; var possibility_type_info; if (___cxa_is_number_type(possibilityType)) { possibility_type_info = possibilityType; } else { var possibility_type_infoAddr = {{{ makeGetValue('possibilityType', '0', '*') }}} - {{{ Runtime.QUANTUM_SIZE*2 }}}; possibility_type_info = {{{ makeGetValue('possibility_type_infoAddr', '0', '*') }}}; } switch (possibility_type_info) { case 0: // possibility is a pointer // See if definite type is a pointer var definite_type_infoAddr = {{{ makeGetValue('definiteType', '0', '*') }}} - {{{ Runtime.QUANTUM_SIZE*2 }}}; var definite_type_info = {{{ makeGetValue('definite_type_infoAddr', '0', '*') }}}; if (definite_type_info == 0) { // Also a pointer; compare base types of pointers var defPointerBaseAddr = definiteType+{{{ Runtime.QUANTUM_SIZE*2 }}}; var defPointerBaseType = {{{ makeGetValue('defPointerBaseAddr', '0', '*') }}}; var possPointerBaseAddr = possibilityType+{{{ Runtime.QUANTUM_SIZE*2 }}}; var possPointerBaseType = {{{ makeGetValue('possPointerBaseAddr', '0', '*') }}}; return ___cxa_does_inherit(defPointerBaseType, possPointerBaseType, possibility); } else return false; // one pointer and one non-pointer case 1: // class with no base class return false; case 2: // class with base class var parentTypeAddr = possibilityType + {{{ Runtime.QUANTUM_SIZE*2 }}}; var parentType = {{{ makeGetValue('parentTypeAddr', '0', '*') }}}; return ___cxa_does_inherit(definiteType, parentType, possibility); default: return false; // some unencountered type } }, // Destructors for std::exception since we don't have them implemented in libcxx as we aren't using libcxxabi. // These are also needed for the dlmalloc tests. _ZNSt9exceptionD0Ev: function() {}, _ZNSt9exceptionD1Ev: function() {}, _ZNSt9exceptionD2Ev: function() {}, _ZNKSt9exception4whatEv__deps: ['malloc'], _ZNKSt9exception4whatEv: function() { if (!__ZNKSt9exception4whatEv.buffer) { var name = "std::exception"; __ZNKSt9exception4whatEv.buffer = _malloc(name.length + 1); writeStringToMemory(name, __ZNKSt9exception4whatEv.buffer); } return __ZNKSt9exception4whatEv.buffer; }, // RTTI hacks for exception handling, defining type_infos for common types. // The values are dummies. We simply use the addresses of these statically // allocated variables as unique identifiers. _ZTIb: [0], // bool _ZTIi: [0], // int _ZTIj: [0], // unsigned int _ZTIl: [0], // long _ZTIm: [0], // unsigned long _ZTIx: [0], // long long _ZTIy: [0], // unsigned long long _ZTIf: [0], // float _ZTId: [0], // double _ZTIe: [0], // long double _ZTIc: [0], // char _ZTIa: [0], // signed char _ZTIh: [0], // unsigned char _ZTIs: [0], // short _ZTIt: [0], // unsigned short _ZTIv: [0], // void _ZTIPv: [0], // void* _ZTISt9exception: 'allocate([allocate([1,0,0,0,0,0,0], "i8", ALLOC_STATIC)+8, 0], "i32", ALLOC_STATIC)', // typeinfo for std::exception llvm_uadd_with_overflow_i8: function(x, y) { x = x & 0xff; y = y & 0xff; {{{ makeStructuralReturn(['(x+y) & 0xff', 'x+y > 255']) }}}; }, llvm_umul_with_overflow_i8: function(x, y) { x = x & 0xff; y = y & 0xff; {{{ makeStructuralReturn(['(x*y) & 0xff', 'x*y > 255']) }}}; }, llvm_uadd_with_overflow_i16: function(x, y) { x = x & 0xffff; y = y & 0xffff; {{{ makeStructuralReturn(['(x+y) & 0xffff', 'x+y > 65535']) }}}; }, llvm_umul_with_overflow_i16: function(x, y) { x = x & 0xffff; y = y & 0xffff; {{{ makeStructuralReturn(['(x*y) & 0xffff', 'x*y > 65535']) }}}; }, llvm_uadd_with_overflow_i32: function(x, y) { x = x>>>0; y = y>>>0; {{{ makeStructuralReturn(['(x+y)>>>0', 'x+y > 4294967295']) }}}; }, llvm_umul_with_overflow_i32: function(x, y) { x = x>>>0; y = y>>>0; {{{ makeStructuralReturn(['(x*y)>>>0', 'x*y > 4294967295']) }}}; }, llvm_umul_with_overflow_i64__deps: [function() { Types.preciseI64MathUsed = 1 }], llvm_umul_with_overflow_i64: function(xl, xh, yl, yh) { #if ASSERTIONS Runtime.warnOnce('no overflow support in llvm_umul_with_overflow_i64'); #endif var low = ___muldi3(xl, xh, yl, yh); {{{ makeStructuralReturn(['low', 'tempRet0', '0']) }}}; }, llvm_stacksave: function() { var self = _llvm_stacksave; if (!self.LLVM_SAVEDSTACKS) { self.LLVM_SAVEDSTACKS = []; } self.LLVM_SAVEDSTACKS.push(Runtime.stackSave()); return self.LLVM_SAVEDSTACKS.length-1; }, llvm_stackrestore: function(p) { var self = _llvm_stacksave; var ret = self.LLVM_SAVEDSTACKS[p]; self.LLVM_SAVEDSTACKS.splice(p, 1); Runtime.stackRestore(ret); }, __cxa_pure_virtual: function() { ABORT = true; throw 'Pure virtual function called!'; }, llvm_flt_rounds: function() { return -1; // 'indeterminable' for FLT_ROUNDS }, llvm_memory_barrier: function(){}, llvm_atomic_load_add_i32_p0i32: function(ptr, delta) { var ret = {{{ makeGetValue('ptr', '0', 'i32') }}}; {{{ makeSetValue('ptr', '0', 'ret+delta', 'i32') }}}; return ret; }, llvm_expect_i32__inline: function(val, expected) { return '(' + val + ')'; }, llvm_lifetime_start: function() {}, llvm_lifetime_end: function() {}, llvm_invariant_start: function() {}, llvm_invariant_end: function() {}, llvm_objectsize_i32: function() { return -1 }, // TODO: support this llvm_dbg_declare__inline: function() { throw 'llvm_debug_declare' }, // avoid warning // llvm-nacl llvm_nacl_atomic_store_i32__inline: true, // gnu atomics __atomic_is_lock_free: function(size, ptr) { return size <= 4 && (ptr&(size-1)) == 0; }, __atomic_load_8: function(ptr, memmodel) { {{{ makeStructuralReturn([makeGetValue('ptr', 0, 'i32'), makeGetValue('ptr', 4, 'i32')]) }}}; }, __atomic_store_8: function(ptr, vall, valh, memmodel) { {{{ makeSetValue('ptr', 0, 'vall', 'i32') }}}; {{{ makeSetValue('ptr', 4, 'valh', 'i32') }}}; }, __atomic_exchange_8: function(ptr, vall, valh, memmodel) { var l = {{{ makeGetValue('ptr', 0, 'i32') }}}; var h = {{{ makeGetValue('ptr', 4, 'i32') }}}; {{{ makeSetValue('ptr', 0, 'vall', 'i32') }}}; {{{ makeSetValue('ptr', 4, 'valh', 'i32') }}}; {{{ makeStructuralReturn(['l', 'h']) }}}; }, __atomic_compare_exchange_8: function(ptr, expected, desiredl, desiredh, weak, success_memmodel, failure_memmodel) { var pl = {{{ makeGetValue('ptr', 0, 'i32') }}}; var ph = {{{ makeGetValue('ptr', 4, 'i32') }}}; var el = {{{ makeGetValue('expected', 0, 'i32') }}}; var eh = {{{ makeGetValue('expected', 4, 'i32') }}}; if (pl === el && ph === eh) { {{{ makeSetValue('ptr', 0, 'desiredl', 'i32') }}}; {{{ makeSetValue('ptr', 4, 'desiredh', 'i32') }}}; return 1; } else { {{{ makeSetValue('expected', 0, 'pl', 'i32') }}}; {{{ makeSetValue('expected', 4, 'ph', 'i32') }}}; return 0; } }, __atomic_fetch_add_8__deps: ['llvm_uadd_with_overflow_i64'], __atomic_fetch_add_8: function(ptr, vall, valh, memmodel) { var l = {{{ makeGetValue('ptr', 0, 'i32') }}}; var h = {{{ makeGetValue('ptr', 4, 'i32') }}}; {{{ makeSetValue('ptr', 0, '_llvm_uadd_with_overflow_i64(l, h, vall, valh)', 'i32') }}}; {{{ makeSetValue('ptr', 4, 'tempRet0', 'i32') }}}; {{{ makeStructuralReturn(['l', 'h']) }}}; }, __atomic_fetch_sub_8__deps: ['i64Subtract'], __atomic_fetch_sub_8: function(ptr, vall, valh, memmodel) { var l = {{{ makeGetValue('ptr', 0, 'i32') }}}; var h = {{{ makeGetValue('ptr', 4, 'i32') }}}; {{{ makeSetValue('ptr', 0, '_i64Subtract(l, h, vall, valh)', 'i32') }}}; {{{ makeSetValue('ptr', 4, 'tempRet0', 'i32') }}}; {{{ makeStructuralReturn(['l', 'h']) }}}; }, __atomic_fetch_and_8__deps: ['i64Subtract'], __atomic_fetch_and_8: function(ptr, vall, valh, memmodel) { var l = {{{ makeGetValue('ptr', 0, 'i32') }}}; var h = {{{ makeGetValue('ptr', 4, 'i32') }}}; {{{ makeSetValue('ptr', 0, 'l&vall', 'i32') }}}; {{{ makeSetValue('ptr', 4, 'h&valh', 'i32') }}}; {{{ makeStructuralReturn(['l', 'h']) }}}; }, __atomic_fetch_or_8: function(ptr, vall, valh, memmodel) { var l = {{{ makeGetValue('ptr', 0, 'i32') }}}; var h = {{{ makeGetValue('ptr', 4, 'i32') }}}; {{{ makeSetValue('ptr', 0, 'l|vall', 'i32') }}}; {{{ makeSetValue('ptr', 4, 'h|valh', 'i32') }}}; {{{ makeStructuralReturn(['l', 'h']) }}}; }, __atomic_fetch_xor_8: function(ptr, vall, valh, memmodel) { var l = {{{ makeGetValue('ptr', 0, 'i32') }}}; var h = {{{ makeGetValue('ptr', 4, 'i32') }}}; {{{ makeSetValue('ptr', 0, 'l^vall', 'i32') }}}; {{{ makeSetValue('ptr', 4, 'h^valh', 'i32') }}}; {{{ makeStructuralReturn(['l', 'h']) }}}; }, // ========================================================================== // llvm-mono integration // ========================================================================== llvm_mono_load_i8_p0i8: function(ptr) { return {{{ makeGetValue('ptr', 0, 'i8') }}}; }, llvm_mono_store_i8_p0i8: function(value, ptr) { {{{ makeSetValue('ptr', 0, 'value', 'i8') }}}; }, llvm_mono_load_i16_p0i16: function(ptr) { return {{{ makeGetValue('ptr', 0, 'i16') }}}; }, llvm_mono_store_i16_p0i16: function(value, ptr) { {{{ makeSetValue('ptr', 0, 'value', 'i16') }}}; }, llvm_mono_load_i32_p0i32: function(ptr) { return {{{ makeGetValue('ptr', 0, 'i32') }}}; }, llvm_mono_store_i32_p0i32: function(value, ptr) { {{{ makeSetValue('ptr', 0, 'value', 'i32') }}}; }, // ========================================================================== // math.h // ========================================================================== cos: 'Math_cos', cosf: 'Math_cos', cosl: 'Math_cos', sin: 'Math_sin', sinf: 'Math_sin', sinl: 'Math_sin', tan: 'Math_tan', tanf: 'Math_tan', tanl: 'Math_tan', acos: 'Math_acos', acosf: 'Math_acos', acosl: 'Math_acos', asin: 'Math_asin', asinf: 'Math_asin', asinl: 'Math_asin', atan: 'Math_atan', atanf: 'Math_atan', atanl: 'Math_atan', atan2: 'Math_atan2', atan2f: 'Math_atan2', atan2l: 'Math_atan2', exp: 'Math_exp', expf: 'Math_exp', expl: 'Math_exp', // The erf and erfc functions are inspired from // http://www.digitalmars.com/archives/cplusplus/3634.html // and mruby source code at // https://github.com/mruby/mruby/blob/master/src/math.c erfc: function(x) { var MATH_TOLERANCE = 1E-12; var ONE_SQRTPI = 0.564189583547756287; var a = 1; var b = x; var c = x; var d = x * x + 0.5; var n = 1.0; var q2 = b / d; var q1, t; if (Math.abs(x) < 2.2) { return 1.0 - _erf(x); } if (x < 0) { return 2.0 - _erfc(-x); } do { t = a * n + b * x; a = b; b = t; t = c * n + d * x; c = d; d = t; n += 0.5; q1 = q2; q2 = b / d; } while (Math.abs(q1 - q2) / q2 > MATH_TOLERANCE); return (ONE_SQRTPI * Math.exp(- x * x) * q2); }, erfcf: 'erfc', erfcl: 'erfc', erf__deps: ['erfc'], erf: function(x) { var MATH_TOLERANCE = 1E-12; var TWO_SQRTPI = 1.128379167095512574; var sum = x; var term = x; var xsqr = x*x; var j = 1; if (Math.abs(x) > 2.2) { return 1.0 - _erfc(x); } do { term *= xsqr / j; sum -= term / (2 * j + 1); ++j; term *= xsqr / j; sum += term / (2 * j + 1); ++j; } while (Math.abs(term / sum) > MATH_TOLERANCE); return (TWO_SQRTPI * sum); }, erff: 'erf', erfl: 'erf', log: 'Math_log', logf: 'Math_log', logl: 'Math_log', sqrt: 'Math_sqrt', sqrtf: 'Math_sqrt', sqrtl: 'Math_sqrt', fabs: 'Math_abs', fabsf: 'Math_abs', fabsl: 'Math_abs', ceil: 'Math_ceil', ceilf: 'Math_ceil', ceill: 'Math_ceil', floor: 'Math_floor', floorf: 'Math_floor', floorl: 'Math_floor', pow: 'Math_pow', powf: 'Math_pow', powl: 'Math_pow', llvm_sqrt_f32: 'Math_sqrt', llvm_sqrt_f64: 'Math_sqrt', llvm_pow_f32: 'Math_pow', llvm_pow_f64: 'Math_pow', llvm_log_f32: 'Math_log', llvm_log_f64: 'Math_log', llvm_exp_f32: 'Math_exp', llvm_exp_f64: 'Math_exp', cbrt: function(x) { return Math.pow(x, 1/3); }, cbrtf: 'cbrt', cbrtl: 'cbrt', modf: function(x, intpart) { {{{ makeSetValue('intpart', 0, 'Math.floor(x)', 'double') }}}; return x - {{{ makeGetValue('intpart', 0, 'double') }}}; }, modff: function(x, intpart) { {{{ makeSetValue('intpart', 0, 'Math.floor(x)', 'float') }}}; return x - {{{ makeGetValue('intpart', 0, 'float') }}}; }, frexp: function(x, exp_addr) { var sig = 0, exp_ = 0; if (x !== 0) { var sign = 1; if (x < 0) { x = -x; sign = -1; } var raw_exp = Math.log(x)/Math.log(2); exp_ = Math.ceil(raw_exp); if (exp_ === raw_exp) exp_ += 1; sig = sign*x/Math.pow(2, exp_); } {{{ makeSetValue('exp_addr', 0, 'exp_', 'i32') }}}; return sig; }, frexpf: 'frexp', finite: function(x) { return isFinite(x); }, __finite: 'finite', isinf: function(x) { return !isNaN(x) && !isFinite(x); }, __isinf: 'isinf', isnan: function(x) { return isNaN(x); }, __isnan: 'isnan', _reallyNegative: function(x) { return x < 0 || (x === 0 && (1/x) === -Infinity); }, copysign__deps: ['_reallyNegative'], copysign: function(a, b) { return __reallyNegative(a) === __reallyNegative(b) ? a : -a; }, copysignf: 'copysign', copysignl: 'copysign', __signbit__deps: ['copysign'], __signbit: function(x) { // We implement using copysign so that we get support // for negative zero (once copysign supports that). return _copysign(1.0, x) < 0; }, __signbitd: '__signbit', __signbitf: '__signbit', __signbitl: '__signbit', hypot: function(a, b) { return Math.sqrt(a*a + b*b); }, hypotf: 'hypot', hypotl: 'hypot', sinh: function(x) { var p = Math.pow(Math.E, x); return (p - (1 / p)) / 2; }, sinhf: 'sinh', sinhl: 'sinh', cosh: function(x) { var p = Math.pow(Math.E, x); return (p + (1 / p)) / 2; }, coshf: 'cosh', coshl: 'cosh', tanh__deps: ['sinh', 'cosh'], tanh: function(x) { return _sinh(x) / _cosh(x); }, tanhf: 'tanh', tanhl: 'tanh', asinh: function(x) { return Math.log(x + Math.sqrt(x * x + 1)); }, asinhf: 'asinh', asinhl: 'asinh', acosh: function(x) { return Math.log(x * 1 + Math.sqrt(x * x - 1)); }, acoshf: 'acosh', acoshl: 'acosh', atanh: function(x) { return Math.log((1 + x) / (1 - x)) / 2; }, atanhf: 'atanh', atanhl: 'atanh', exp2: function(x) { return Math.pow(2, x); }, exp2f: 'exp2', exp2l: 'exp2', expm1: function(x) { return Math.exp(x) - 1; }, expm1f: 'expm1', expm1l: 'expm1', round: function(x) { return (x < 0) ? -Math.round(-x) : Math.round(x); }, roundf: 'round', roundl: 'round', lround: 'round', lroundf: 'round', lroundl: 'round', llround: 'round', llroundf: 'round', llroundl: 'round', rint: function(x) { if (Math.abs(x % 1) !== 0.5) return Math.round(x); return x + x % 2 + ((x < 0) ? 1 : -1); }, rintf: 'rint', rintl: 'rint', lrint: 'rint', lrintf: 'rint', lrintl: 'rint', #if USE_TYPED_ARRAYS == 2 llrint: function(x) { x = (x < 0) ? -Math.round(-x) : Math.round(x); {{{ makeStructuralReturn(splitI64('x')) }}}; }, #else llrint: 'rint', #endif llrintf: 'llrint', llrintl: 'llrint', nearbyint: 'rint', nearbyintf: 'rint', nearbyintl: 'rint', trunc: function(x) { return (x < 0) ? Math.ceil(x) : Math.floor(x); }, truncf: 'trunc', truncl: 'trunc', fdim: function(x, y) { return (x > y) ? x - y : 0; }, fdimf: 'fdim', fdiml: 'fdim', fmax: function(x, y) { return isNaN(x) ? y : isNaN(y) ? x : Math.max(x, y); }, fmaxf: 'fmax', fmaxl: 'fmax', fmin: function(x, y) { return isNaN(x) ? y : isNaN(y) ? x : Math.min(x, y); }, fminf: 'fmin', fminl: 'fmin', fma: function(x, y, z) { return x * y + z; }, fmaf: 'fma', fmal: 'fma', fmod: function(x, y) { return x % y; }, fmodf: 'fmod', fmodl: 'fmod', remainder: 'fmod', remainderf: 'fmod', remainderl: 'fmod', log10: function(x) { return Math.log(x) / Math.LN10; }, log10f: 'log10', log10l: 'log10', log1p: function(x) { return Math.log(1 + x); }, log1pf: 'log1p', log1pl: 'log1p', log2: function(x) { return Math.log(x) / Math.LN2; }, log2f: 'log2', log2l: 'log2', nan: function(x) { return NaN; }, nanf: 'nan', nanl: 'nan', sincos: function(x, sine, cosine) { var sineVal = Math.sin(x), cosineVal = Math.cos(x); {{{ makeSetValue('sine', '0', 'sineVal', 'double') }}}; {{{ makeSetValue('cosine', '0', 'cosineVal', 'double') }}}; }, sincosl: 'sincos', sincosf: function(x, sine, cosine) { var sineVal = Math.sin(x), cosineVal = Math.cos(x); {{{ makeSetValue('sine', '0', 'sineVal', 'float') }}}; {{{ makeSetValue('cosine', '0', 'cosineVal', 'float') }}}; }, div: function(divt, numer, denom) { var quot = Math.floor(numer / denom); var rem = numer - quot * denom; {{{ makeSetValue('divt', C_STRUCTS.div_t.quot, 'quot', 'i32') }}}; {{{ makeSetValue('divt', C_STRUCTS.div_t.rem, 'rem', 'i32') }}}; return divt; }, __fpclassify: function(x) { if (isNaN(x)) return {{{ cDefine('FP_NAN') }}}; if (!isFinite(x)) return {{{ cDefine('FP_INFINITE') }}}; if (x == 0) return {{{ cDefine('FP_ZERO') }}}; // FP_SUBNORMAL..? return {{{ cDefine('FP_NORMAL') }}}; }, __fpclassifyd: '__fpclassify', // Needed by tests/python/python.le32.bc __fpclassifyf: '__fpclassify', __fpclassifyl: '__fpclassify', // ========================================================================== // sys/utsname.h // ========================================================================== uname: function(name) { // int uname(struct utsname *name); // http://pubs.opengroup.org/onlinepubs/009695399/functions/uname.html var layout = {{{ JSON.stringify(C_STRUCTS.utsname) }}}; function copyString(element, value) { var offset = layout[element]; writeAsciiToMemory(value, name + offset); } if (name === 0) { return -1; } else { copyString('sysname', 'Emscripten'); copyString('nodename', 'emscripten'); copyString('release', '1.0'); copyString('version', '#1'); copyString('machine', 'x86-JS'); return 0; } }, // ========================================================================== // dlfcn.h - Dynamic library loading // // Some limitations: // // * Minification on each file separately may not work, as they will // have different shortened names. You can in theory combine them, then // minify, then split... perhaps. // // * LLVM optimizations may fail. If the child wants to access a function // in the parent, LLVM opts may remove it from the parent when it is // being compiled. Not sure how to tell LLVM to not do so. // ========================================================================== $DLFCN: { #if DLOPEN_SUPPORT // extra asm.js dlopen support functionTable: [], // will contain objects mapping sigs to js functions that call into the right asm module with the right index registerFunctions: function(asm, num, sigs, jsModule) { // use asm module dynCall_* from functionTable if (num % 2 == 1) num++; // keep pointers even var table = DLFCN.functionTable; var from = table.length; assert(from % 2 == 0); for (var i = 0; i < num; i++) { table[from + i] = {}; sigs.forEach(function(sig) { // TODO: new Function etc. var full = 'dynCall_' + sig; table[from + i][sig] = function dynCall_sig() { arguments[0] -= from; return asm[full].apply(null, arguments); } }); } if (jsModule.cleanups) { var newLength = table.length; jsModule.cleanups.push(function() { if (table.length === newLength) { table.length = from; // nothing added since, just shrink } else { // something was added above us, clear and leak the span for (var i = 0; i < num; i++) { table[from + i] = null; } } while (table.length > 0 && table[table.length-1] === null) table.pop(); }); } // patch js module dynCall_* to use functionTable sigs.forEach(function(sig) { jsModule['dynCall_' + sig] = function dynCall_sig() { return table[arguments[0]][sig].apply(null, arguments); }; }); }, #endif error: null, errorMsg: null, loadedLibs: {}, // handle -> [refcount, name, lib_object] loadedLibNames: {}, // name -> handle }, // void* dlopen(const char* filename, int flag); dlopen__deps: ['$DLFCN', '$FS', '$ENV'], dlopen: function(filename, flag) { // void *dlopen(const char *file, int mode); // http://pubs.opengroup.org/onlinepubs/009695399/functions/dlopen.html filename = filename === 0 ? '__self__' : (ENV['LD_LIBRARY_PATH'] || '/') + Pointer_stringify(filename); #if ASM_JS #if DLOPEN_SUPPORT == 0 abort('need to build with DLOPEN_SUPPORT=1 to get dlopen support in asm.js'); #endif #endif if (DLFCN.loadedLibNames[filename]) { // Already loaded; increment ref count and return. var handle = DLFCN.loadedLibNames[filename]; DLFCN.loadedLibs[handle].refcount++; return handle; } if (filename === '__self__') { var handle = -1; var lib_module = Module; var cached_functions = SYMBOL_TABLE; } else { var target = FS.findObject(filename); if (!target || target.isFolder || target.isDevice) { DLFCN.errorMsg = 'Could not find dynamic lib: ' + filename; return 0; } else { FS.forceLoadFile(target); var lib_data = intArrayToString(target.contents); } try { var lib_module = eval(lib_data)( #if ASM_JS DLFCN.functionTable.length, #else {{{ Functions.getTable('x') }}}.length, #endif Module ); } catch (e) { #if ASSERTIONS Module.printErr('Error in loading dynamic library: ' + e); #endif DLFCN.errorMsg = 'Could not evaluate dynamic lib: ' + filename; return 0; } // Not all browsers support Object.keys(). var handle = 1; for (var key in DLFCN.loadedLibs) { if (DLFCN.loadedLibs.hasOwnProperty(key)) handle++; } // We don't care about RTLD_NOW and RTLD_LAZY. if (flag & 256) { // RTLD_GLOBAL for (var ident in lib_module) { if (lib_module.hasOwnProperty(ident)) { Module[ident] = lib_module[ident]; } } } var cached_functions = {}; } DLFCN.loadedLibs[handle] = { refcount: 1, name: filename, module: lib_module, cached_functions: cached_functions }; DLFCN.loadedLibNames[filename] = handle; return handle; }, // int dlclose(void* handle); dlclose__deps: ['$DLFCN'], dlclose: function(handle) { // int dlclose(void *handle); // http://pubs.opengroup.org/onlinepubs/009695399/functions/dlclose.html if (!DLFCN.loadedLibs[handle]) { DLFCN.errorMsg = 'Tried to dlclose() unopened handle: ' + handle; return 1; } else { var lib_record = DLFCN.loadedLibs[handle]; if (--lib_record.refcount == 0) { if (lib_record.module.cleanups) { lib_record.module.cleanups.forEach(function(cleanup) { cleanup() }); } delete DLFCN.loadedLibNames[lib_record.name]; delete DLFCN.loadedLibs[handle]; } return 0; } }, // void* dlsym(void* handle, const char* symbol); dlsym__deps: ['$DLFCN'], dlsym: function(handle, symbol) { // void *dlsym(void *restrict handle, const char *restrict name); // http://pubs.opengroup.org/onlinepubs/009695399/functions/dlsym.html symbol = '_' + Pointer_stringify(symbol); if (!DLFCN.loadedLibs[handle]) { DLFCN.errorMsg = 'Tried to dlsym() from an unopened handle: ' + handle; return 0; } else { var lib = DLFCN.loadedLibs[handle]; // self-dlopen means that lib.module is not a superset of // cached_functions, so check the latter first if (lib.cached_functions.hasOwnProperty(symbol)) { return lib.cached_functions[symbol]; } else { if (!lib.module.hasOwnProperty(symbol)) { DLFCN.errorMsg = ('Tried to lookup unknown symbol "' + symbol + '" in dynamic lib: ' + lib.name); return 0; } else { var result = lib.module[symbol]; if (typeof result == 'function') { #if ASM_JS result = lib.module.SYMBOL_TABLE[symbol]; assert(result); #else result = Runtime.addFunction(result); #endif lib.cached_functions = result; } return result; } } } }, // char* dlerror(void); dlerror__deps: ['$DLFCN'], dlerror: function() { // char *dlerror(void); // http://pubs.opengroup.org/onlinepubs/009695399/functions/dlerror.html if (DLFCN.errorMsg === null) { return 0; } else { if (DLFCN.error) _free(DLFCN.error); var msgArr = intArrayFromString(DLFCN.errorMsg); DLFCN.error = allocate(msgArr, 'i8', ALLOC_NORMAL); DLFCN.errorMsg = null; return DLFCN.error; } }, dladdr: function(addr, info) { // report all function pointers as coming from this program itself XXX not really correct in any way var fname = allocate(intArrayFromString("/bin/this.program"), 'i8', ALLOC_NORMAL); // XXX leak {{{ makeSetValue('addr', 0, 'fname', 'i32') }}}; {{{ makeSetValue('addr', QUANTUM_SIZE, '0', 'i32') }}}; {{{ makeSetValue('addr', QUANTUM_SIZE*2, '0', 'i32') }}}; {{{ makeSetValue('addr', QUANTUM_SIZE*3, '0', 'i32') }}}; return 1; }, // ========================================================================== // pwd.h // ========================================================================== // TODO: Implement. // http://pubs.opengroup.org/onlinepubs/009695399/basedefs/pwd.h.html getpwuid: function(uid) { return 0; // NULL }, // ========================================================================== // termios.h // ========================================================================== tcgetattr: function(fildes, termios_p) { // http://pubs.opengroup.org/onlinepubs/009695399/functions/tcgetattr.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } if (!stream.tty) { ___setErrNo(ERRNO_CODES.ENOTTY); return -1; } return 0; }, tcsetattr: function(fildes, optional_actions, termios_p) { // http://pubs.opengroup.org/onlinepubs/7908799/xsh/tcsetattr.html var stream = FS.getStream(fildes); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } if (!stream.tty) { ___setErrNo(ERRNO_CODES.ENOTTY); return -1; } return 0; }, // ========================================================================== // time.h // ========================================================================== clock: function() { if (_clock.start === undefined) _clock.start = Date.now(); return Math.floor((Date.now() - _clock.start) * ({{{ cDefine('CLOCKS_PER_SEC') }}}/1000)); }, time: function(ptr) { var ret = Math.floor(Date.now()/1000); if (ptr) { {{{ makeSetValue('ptr', 0, 'ret', 'i32') }}}; } return ret; }, difftime: function(time1, time0) { return time1 - time0; }, // Statically allocated time struct. __tm_current: 'allocate({{{ C_STRUCTS.tm.__size__ }}}, "i8", ALLOC_STATIC)', // Statically allocated timezone string. We only use GMT as a timezone. __tm_timezone: 'allocate(intArrayFromString("GMT"), "i8", ALLOC_STATIC)', // Statically allocated time strings. __tm_formatted: 'allocate({{{ C_STRUCTS.tm.__size__ }}}, "i8", ALLOC_STATIC)', mktime__deps: ['tzset'], mktime: function(tmPtr) { _tzset(); var year = {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_year, 'i32') }}}; var timestamp = new Date(year >= 1900 ? year : year + 1900, {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'i32') }}}, {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'i32') }}}, {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'i32') }}}, {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_min, 'i32') }}}, {{{ makeGetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'i32') }}}, 0).getTime() / 1000; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_wday, 'new Date(timestamp).getDay()', 'i32') }}}; var yday = Math.round((timestamp - (new Date(year, 0, 1)).getTime()) / (1000 * 60 * 60 * 24)); {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_yday, 'yday', 'i32') }}}; return timestamp; }, timelocal: 'mktime', gmtime__deps: ['malloc', '__tm_current', 'gmtime_r'], gmtime: function(time) { return _gmtime_r(time, ___tm_current); }, gmtime_r__deps: ['__tm_timezone'], gmtime_r: function(time, tmPtr) { var date = new Date({{{ makeGetValue('time', 0, 'i32') }}}*1000); {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'date.getUTCSeconds()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_min, 'date.getUTCMinutes()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'date.getUTCHours()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'date.getUTCDate()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'date.getUTCMonth()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_year, 'date.getUTCFullYear()-1900', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_wday, 'date.getUTCDay()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_gmtoff, '0', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_isdst, '0', 'i32') }}}; var start = new Date(date); // define date using UTC, start from Jan 01 00:00:00 UTC start.setUTCDate(1); start.setUTCMonth(0); start.setUTCHours(0); start.setUTCMinutes(0); start.setUTCSeconds(0); start.setUTCMilliseconds(0); var yday = Math.floor((date.getTime() - start.getTime()) / (1000 * 60 * 60 * 24)); {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_yday, 'yday', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_zone, '___tm_timezone', 'i32') }}}; return tmPtr; }, timegm__deps: ['mktime'], timegm: function(tmPtr) { _tzset(); var offset = {{{ makeGetValue(makeGlobalUse('_timezone'), 0, 'i32') }}}; var daylight = {{{ makeGetValue(makeGlobalUse('_daylight'), 0, 'i32') }}}; daylight = (daylight == 1) ? 60 * 60 : 0; var ret = _mktime(tmPtr) + offset - daylight; return ret; }, localtime__deps: ['malloc', '__tm_current', 'localtime_r'], localtime: function(time) { return _localtime_r(time, ___tm_current); }, localtime_r__deps: ['__tm_timezone', 'tzset'], localtime_r: function(time, tmPtr) { _tzset(); var date = new Date({{{ makeGetValue('time', 0, 'i32') }}}*1000); {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_sec, 'date.getSeconds()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_min, 'date.getMinutes()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_hour, 'date.getHours()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mday, 'date.getDate()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_mon, 'date.getMonth()', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_year, 'date.getFullYear()-1900', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_wday, 'date.getDay()', 'i32') }}}; var start = new Date(date.getFullYear(), 0, 1); var yday = Math.floor((date.getTime() - start.getTime()) / (1000 * 60 * 60 * 24)); {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_yday, 'yday', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_gmtoff, 'start.getTimezoneOffset() * 60', 'i32') }}}; var dst = Number(start.getTimezoneOffset() != date.getTimezoneOffset()); {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_isdst, 'dst', 'i32') }}}; {{{ makeSetValue('tmPtr', C_STRUCTS.tm.tm_zone, '___tm_timezone', 'i32') }}}; return tmPtr; }, asctime__deps: ['malloc', '__tm_formatted', 'asctime_r'], asctime: function(tmPtr) { return _asctime_r(tmPtr, ___tm_formatted); }, asctime_r__deps: ['__tm_formatted', 'mktime'], asctime_r: function(tmPtr, buf) { var date = new Date(_mktime(tmPtr)*1000); var formatted = date.toString(); var datePart = formatted.replace(/\d{4}.*/, '').replace(/ 0/, ' '); var timePart = formatted.match(/\d{2}:\d{2}:\d{2}/)[0]; formatted = datePart + timePart + ' ' + date.getFullYear() + '\n'; formatted.split('').forEach(function(chr, index) { {{{ makeSetValue('buf', 'index', 'chr.charCodeAt(0)', 'i8') }}}; }); {{{ makeSetValue('buf', '25', '0', 'i8') }}}; return buf; }, ctime__deps: ['localtime', 'asctime'], ctime: function(timer) { return _asctime(_localtime(timer)); }, ctime_r__deps: ['localtime', 'asctime'], ctime_r: function(timer, buf) { return _asctime_r(_localtime_r(timer, ___tm_current), buf); }, dysize: function(year) { var leap = ((year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0))); return leap ? 366 : 365; }, // TODO: Initialize these to defaults on startup from system settings. // Note: glibc has one fewer underscore for all of these. Also used in other related functions (timegm) tzname: 'allocate({{{ 2*Runtime.QUANTUM_SIZE }}}, "i32*", ALLOC_STATIC)', daylight: 'allocate(1, "i32*", ALLOC_STATIC)', timezone: 'allocate(1, "i32*", ALLOC_STATIC)', tzset__deps: ['tzname', 'daylight', 'timezone'], tzset: function() { // TODO: Use (malleable) environment variables instead of system settings. if (_tzset.called) return; _tzset.called = true; {{{ makeSetValue(makeGlobalUse('_timezone'), '0', '-(new Date()).getTimezoneOffset() * 60', 'i32') }}}; var winter = new Date(2000, 0, 1); var summer = new Date(2000, 6, 1); {{{ makeSetValue(makeGlobalUse('_daylight'), '0', 'Number(winter.getTimezoneOffset() != summer.getTimezoneOffset())', 'i32') }}}; var winterName = 'GMT'; // XXX do not rely on browser timezone info, it is very unpredictable | winter.toString().match(/\(([A-Z]+)\)/)[1]; var summerName = 'GMT'; // XXX do not rely on browser timezone info, it is very unpredictable | summer.toString().match(/\(([A-Z]+)\)/)[1]; var winterNamePtr = allocate(intArrayFromString(winterName), 'i8', ALLOC_NORMAL); var summerNamePtr = allocate(intArrayFromString(summerName), 'i8', ALLOC_NORMAL); {{{ makeSetValue(makeGlobalUse('_tzname'), '0', 'winterNamePtr', 'i32') }}}; {{{ makeSetValue(makeGlobalUse('_tzname'), Runtime.QUANTUM_SIZE, 'summerNamePtr', 'i32') }}}; }, stime__deps: ['$ERRNO_CODES', '__setErrNo'], stime: function(when) { ___setErrNo(ERRNO_CODES.EPERM); return -1; }, _MONTH_DAYS_REGULAR: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31], _MONTH_DAYS_LEAP: [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31], _isLeapYear: function(year) { return year%4 === 0 && (year%100 !== 0 || year%400 === 0); }, _arraySum: function(array, index) { var sum = 0; for (var i = 0; i <= index; sum += array[i++]); return sum; }, _addDays__deps: ['_isLeapYear', '_MONTH_DAYS_LEAP', '_MONTH_DAYS_REGULAR'], _addDays: function(date, days) { var newDate = new Date(date.getTime()); while(days > 0) { var leap = __isLeapYear(newDate.getFullYear()); var currentMonth = newDate.getMonth(); var daysInCurrentMonth = (leap ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR)[currentMonth]; if (days > daysInCurrentMonth-newDate.getDate()) { // we spill over to next month days -= (daysInCurrentMonth-newDate.getDate()+1); newDate.setDate(1); if (currentMonth < 11) { newDate.setMonth(currentMonth+1) } else { newDate.setMonth(0); newDate.setFullYear(newDate.getFullYear()+1); } } else { // we stay in current month newDate.setDate(newDate.getDate()+days); return newDate; } } return newDate; }, strftime__deps: ['_isLeapYear', '_arraySum', '_addDays', '_MONTH_DAYS_REGULAR', '_MONTH_DAYS_LEAP'], strftime: function(s, maxsize, format, tm) { // size_t strftime(char *restrict s, size_t maxsize, const char *restrict format, const struct tm *restrict timeptr); // http://pubs.opengroup.org/onlinepubs/009695399/functions/strftime.html var date = { tm_sec: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_sec, 'i32') }}}, tm_min: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_min, 'i32') }}}, tm_hour: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_hour, 'i32') }}}, tm_mday: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_mday, 'i32') }}}, tm_mon: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_mon, 'i32') }}}, tm_year: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_year, 'i32') }}}, tm_wday: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_wday, 'i32') }}}, tm_yday: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_yday, 'i32') }}}, tm_isdst: {{{ makeGetValue('tm', C_STRUCTS.tm.tm_isdst, 'i32') }}} }; var pattern = Pointer_stringify(format); // expand format var EXPANSION_RULES_1 = { '%c': '%a %b %d %H:%M:%S %Y', // Replaced by the locale's appropriate date and time representation - e.g., Mon Aug 3 14:02:01 2013 '%D': '%m/%d/%y', // Equivalent to %m / %d / %y '%F': '%Y-%m-%d', // Equivalent to %Y - %m - %d '%h': '%b', // Equivalent to %b '%r': '%I:%M:%S %p', // Replaced by the time in a.m. and p.m. notation '%R': '%H:%M', // Replaced by the time in 24-hour notation '%T': '%H:%M:%S', // Replaced by the time '%x': '%m/%d/%y', // Replaced by the locale's appropriate date representation '%X': '%H:%M:%S', // Replaced by the locale's appropriate date representation }; for (var rule in EXPANSION_RULES_1) { pattern = pattern.replace(new RegExp(rule, 'g'), EXPANSION_RULES_1[rule]); } var WEEKDAYS = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']; var MONTHS = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']; function leadingSomething(value, digits, character) { var str = typeof value === 'number' ? value.toString() : (value || ''); while (str.length < digits) { str = character[0]+str; } return str; }; function leadingNulls(value, digits) { return leadingSomething(value, digits, '0'); }; function compareByDay(date1, date2) { function sgn(value) { return value < 0 ? -1 : (value > 0 ? 1 : 0); }; var compare; if ((compare = sgn(date1.getFullYear()-date2.getFullYear())) === 0) { if ((compare = sgn(date1.getMonth()-date2.getMonth())) === 0) { compare = sgn(date1.getDate()-date2.getDate()); } } return compare; }; function getFirstWeekStartDate(janFourth) { switch (janFourth.getDay()) { case 0: // Sunday return new Date(janFourth.getFullYear()-1, 11, 29); case 1: // Monday return janFourth; case 2: // Tuesday return new Date(janFourth.getFullYear(), 0, 3); case 3: // Wednesday return new Date(janFourth.getFullYear(), 0, 2); case 4: // Thursday return new Date(janFourth.getFullYear(), 0, 1); case 5: // Friday return new Date(janFourth.getFullYear()-1, 11, 31); case 6: // Saturday return new Date(janFourth.getFullYear()-1, 11, 30); } }; function getWeekBasedYear(date) { var thisDate = __addDays(new Date(date.tm_year+1900, 0, 1), date.tm_yday); var janFourthThisYear = new Date(thisDate.getFullYear(), 0, 4); var janFourthNextYear = new Date(thisDate.getFullYear()+1, 0, 4); var firstWeekStartThisYear = getFirstWeekStartDate(janFourthThisYear); var firstWeekStartNextYear = getFirstWeekStartDate(janFourthNextYear); if (compareByDay(firstWeekStartThisYear, thisDate) <= 0) { // this date is after the start of the first week of this year if (compareByDay(firstWeekStartNextYear, thisDate) <= 0) { return thisDate.getFullYear()+1; } else { return thisDate.getFullYear(); } } else { return thisDate.getFullYear()-1; } }; var EXPANSION_RULES_2 = { '%a': function(date) { return WEEKDAYS[date.tm_wday].substring(0,3); }, '%A': function(date) { return WEEKDAYS[date.tm_wday]; }, '%b': function(date) { return MONTHS[date.tm_mon].substring(0,3); }, '%B': function(date) { return MONTHS[date.tm_mon]; }, '%C': function(date) { var year = date.tm_year+1900; return leadingNulls(Math.floor(year/100),2); }, '%d': function(date) { return leadingNulls(date.tm_mday, 2); }, '%e': function(date) { return leadingSomething(date.tm_mday, 2, ' '); }, '%g': function(date) { // %g, %G, and %V give values according to the ISO 8601:2000 standard week-based year. // In this system, weeks begin on a Monday and week 1 of the year is the week that includes // January 4th, which is also the week that includes the first Thursday of the year, and // is also the first week that contains at least four days in the year. // If the first Monday of January is the 2nd, 3rd, or 4th, the preceding days are part of // the last week of the preceding year; thus, for Saturday 2nd January 1999, // %G is replaced by 1998 and %V is replaced by 53. If December 29th, 30th, // or 31st is a Monday, it and any following days are part of week 1 of the following year. // Thus, for Tuesday 30th December 1997, %G is replaced by 1998 and %V is replaced by 01. return getWeekBasedYear(date).toString().substring(2); }, '%G': function(date) { return getWeekBasedYear(date); }, '%H': function(date) { return leadingNulls(date.tm_hour, 2); }, '%I': function(date) { return leadingNulls(date.tm_hour < 13 ? date.tm_hour : date.tm_hour-12, 2); }, '%j': function(date) { // Day of the year (001-366) return leadingNulls(date.tm_mday+__arraySum(__isLeapYear(date.tm_year+1900) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, date.tm_mon-1), 3); }, '%m': function(date) { return leadingNulls(date.tm_mon+1, 2); }, '%M': function(date) { return leadingNulls(date.tm_min, 2); }, '%n': function() { return '\n'; }, '%p': function(date) { if (date.tm_hour > 0 && date.tm_hour < 13) { return 'AM'; } else { return 'PM'; } }, '%S': function(date) { return leadingNulls(date.tm_sec, 2); }, '%t': function() { return '\t'; }, '%u': function(date) { var day = new Date(date.tm_year+1900, date.tm_mon+1, date.tm_mday, 0, 0, 0, 0); return day.getDay() || 7; }, '%U': function(date) { // Replaced by the week number of the year as a decimal number [00,53]. // The first Sunday of January is the first day of week 1; // days in the new year before this are in week 0. [ tm_year, tm_wday, tm_yday] var janFirst = new Date(date.tm_year+1900, 0, 1); var firstSunday = janFirst.getDay() === 0 ? janFirst : __addDays(janFirst, 7-janFirst.getDay()); var endDate = new Date(date.tm_year+1900, date.tm_mon, date.tm_mday); // is target date after the first Sunday? if (compareByDay(firstSunday, endDate) < 0) { // calculate difference in days between first Sunday and endDate var februaryFirstUntilEndMonth = __arraySum(__isLeapYear(endDate.getFullYear()) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, endDate.getMonth()-1)-31; var firstSundayUntilEndJanuary = 31-firstSunday.getDate(); var days = firstSundayUntilEndJanuary+februaryFirstUntilEndMonth+endDate.getDate(); return leadingNulls(Math.ceil(days/7), 2); } return compareByDay(firstSunday, janFirst) === 0 ? '01': '00'; }, '%V': function(date) { // Replaced by the week number of the year (Monday as the first day of the week) // as a decimal number [01,53]. If the week containing 1 January has four // or more days in the new year, then it is considered week 1. // Otherwise, it is the last week of the previous year, and the next week is week 1. // Both January 4th and the first Thursday of January are always in week 1. [ tm_year, tm_wday, tm_yday] var janFourthThisYear = new Date(date.tm_year+1900, 0, 4); var janFourthNextYear = new Date(date.tm_year+1901, 0, 4); var firstWeekStartThisYear = getFirstWeekStartDate(janFourthThisYear); var firstWeekStartNextYear = getFirstWeekStartDate(janFourthNextYear); var endDate = __addDays(new Date(date.tm_year+1900, 0, 1), date.tm_yday); if (compareByDay(endDate, firstWeekStartThisYear) < 0) { // if given date is before this years first week, then it belongs to the 53rd week of last year return '53'; } if (compareByDay(firstWeekStartNextYear, endDate) <= 0) { // if given date is after next years first week, then it belongs to the 01th week of next year return '01'; } // given date is in between CW 01..53 of this calendar year var daysDifference; if (firstWeekStartThisYear.getFullYear() < date.tm_year+1900) { // first CW of this year starts last year daysDifference = date.tm_yday+32-firstWeekStartThisYear.getDate() } else { // first CW of this year starts this year daysDifference = date.tm_yday+1-firstWeekStartThisYear.getDate(); } return leadingNulls(Math.ceil(daysDifference/7), 2); }, '%w': function(date) { var day = new Date(date.tm_year+1900, date.tm_mon+1, date.tm_mday, 0, 0, 0, 0); return day.getDay(); }, '%W': function(date) { // Replaced by the week number of the year as a decimal number [00,53]. // The first Monday of January is the first day of week 1; // days in the new year before this are in week 0. [ tm_year, tm_wday, tm_yday] var janFirst = new Date(date.tm_year, 0, 1); var firstMonday = janFirst.getDay() === 1 ? janFirst : __addDays(janFirst, janFirst.getDay() === 0 ? 1 : 7-janFirst.getDay()+1); var endDate = new Date(date.tm_year+1900, date.tm_mon, date.tm_mday); // is target date after the first Monday? if (compareByDay(firstMonday, endDate) < 0) { var februaryFirstUntilEndMonth = __arraySum(__isLeapYear(endDate.getFullYear()) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, endDate.getMonth()-1)-31; var firstMondayUntilEndJanuary = 31-firstMonday.getDate(); var days = firstMondayUntilEndJanuary+februaryFirstUntilEndMonth+endDate.getDate(); return leadingNulls(Math.ceil(days/7), 2); } return compareByDay(firstMonday, janFirst) === 0 ? '01': '00'; }, '%y': function(date) { // Replaced by the last two digits of the year as a decimal number [00,99]. [ tm_year] return (date.tm_year+1900).toString().substring(2); }, '%Y': function(date) { // Replaced by the year as a decimal number (for example, 1997). [ tm_year] return date.tm_year+1900; }, '%z': function(date) { // Replaced by the offset from UTC in the ISO 8601:2000 standard format ( +hhmm or -hhmm ), // or by no characters if no timezone is determinable. // For example, "-0430" means 4 hours 30 minutes behind UTC (west of Greenwich). // If tm_isdst is zero, the standard time offset is used. // If tm_isdst is greater than zero, the daylight savings time offset is used. // If tm_isdst is negative, no characters are returned. // FIXME: we cannot determine time zone (or can we?) return ''; }, '%Z': function(date) { // Replaced by the timezone name or abbreviation, or by no bytes if no timezone information exists. [ tm_isdst] // FIXME: we cannot determine time zone (or can we?) return ''; }, '%%': function() { return '%'; } }; for (var rule in EXPANSION_RULES_2) { if (pattern.indexOf(rule) >= 0) { pattern = pattern.replace(new RegExp(rule, 'g'), EXPANSION_RULES_2[rule](date)); } } var bytes = intArrayFromString(pattern, false); if (bytes.length > maxsize) { return 0; } writeArrayToMemory(bytes, s); return bytes.length-1; }, strftime_l__deps: ['strftime'], strftime_l: function(s, maxsize, format, tm) { return _strftime(s, maxsize, format, tm); // no locale support yet }, strptime__deps: ['_isLeapYear', '_arraySum', '_addDays', '_MONTH_DAYS_REGULAR', '_MONTH_DAYS_LEAP'], strptime: function(buf, format, tm) { // char *strptime(const char *restrict buf, const char *restrict format, struct tm *restrict tm); // http://pubs.opengroup.org/onlinepubs/009695399/functions/strptime.html var pattern = Pointer_stringify(format); // escape special characters // TODO: not sure we really need to escape all of these in JS regexps var SPECIAL_CHARS = '\\!@#$^&*()+=-[]/{}|:<>?,.'; for (var i=0, ii=SPECIAL_CHARS.length; i=0; i=pattern.indexOf('%')) { capture.push(pattern[i+1]); pattern = pattern.replace(new RegExp('\\%'+pattern[i+1], 'g'), ''); } var matches = new RegExp('^'+pattern, "i").exec(Pointer_stringify(buf)) // Module['print'](Pointer_stringify(buf)+ ' is matched by '+((new RegExp('^'+pattern)).source)+' into: '+JSON.stringify(matches)); function initDate() { function fixup(value, min, max) { return (typeof value !== 'number' || isNaN(value)) ? min : (value>=min ? (value<=max ? value: max): min); }; return { year: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_year, 'i32', 0, 0, 1) }}} + 1900 , 1970, 9999), month: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_mon, 'i32', 0, 0, 1) }}}, 0, 11), day: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_mday, 'i32', 0, 0, 1) }}}, 1, 31), hour: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_hour, 'i32', 0, 0, 1) }}}, 0, 23), min: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_min, 'i32', 0, 0, 1) }}}, 0, 59), sec: fixup({{{ makeGetValue('tm', C_STRUCTS.tm.tm_sec, 'i32', 0, 0, 1) }}}, 0, 59) }; }; if (matches) { var date = initDate(); var value; function getMatch(symbol) { var pos = capture.indexOf(symbol); // check if symbol appears in regexp if (pos >= 0) { // return matched value or null (falsy!) for non-matches return matches[pos+1]; } return; } // seconds if ((value=getMatch('S'))) { date.sec = parseInt(value); } // minutes if ((value=getMatch('M'))) { date.min = parseInt(value); } // hours if ((value=getMatch('H'))) { // 24h clock date.hour = parseInt(value); } else if ((value = getMatch('I'))) { // AM/PM clock var hour = parseInt(value); if ((value=getMatch('p'))) { hour += value.toUpperCase()[0] === 'P' ? 12 : 0; } date.hour = hour; } // year if ((value=getMatch('Y'))) { // parse from four-digit year date.year = parseInt(value); } else if ((value=getMatch('y'))) { // parse from two-digit year... var year = parseInt(value); if ((value=getMatch('C'))) { // ...and century year += parseInt(value)*100; } else { // ...and rule-of-thumb year += year<69 ? 2000 : 1900; } date.year = year; } // month if ((value=getMatch('m'))) { // parse from month number date.month = parseInt(value)-1; } else if ((value=getMatch('b'))) { // parse from month name date.month = MONTH_NUMBERS[value.substring(0,3).toUpperCase()] || 0; // TODO: derive month from day in year+year, week number+day of week+year } // day if ((value=getMatch('d'))) { // get day of month directly date.day = parseInt(value); } else if ((value=getMatch('j'))) { // get day of month from day of year ... var day = parseInt(value); var leapYear = __isLeapYear(date.year); for (var month=0; month<12; ++month) { var daysUntilMonth = __arraySum(leapYear ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, month-1); if (day<=daysUntilMonth+(leapYear ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR)[month]) { date.day = day-daysUntilMonth; } } } else if ((value=getMatch('a'))) { // get day of month from weekday ... var weekDay = value.substring(0,3).toUpperCase(); if ((value=getMatch('U'))) { // ... and week number (Sunday being first day of week) // Week number of the year (Sunday as the first day of the week) as a decimal number [00,53]. // All days in a new year preceding the first Sunday are considered to be in week 0. var weekDayNumber = DAY_NUMBERS_SUN_FIRST[weekDay]; var weekNumber = parseInt(value); // January 1st var janFirst = new Date(date.year, 0, 1); var endDate; if (janFirst.getDay() === 0) { // Jan 1st is a Sunday, and, hence in the 1st CW endDate = __addDays(janFirst, weekDayNumber+7*(weekNumber-1)); } else { // Jan 1st is not a Sunday, and, hence still in the 0th CW endDate = __addDays(janFirst, 7-janFirst.getDay()+weekDayNumber+7*(weekNumber-1)); } date.day = endDate.getDate(); date.month = endDate.getMonth(); } else if ((value=getMatch('W'))) { // ... and week number (Monday being first day of week) // Week number of the year (Monday as the first day of the week) as a decimal number [00,53]. // All days in a new year preceding the first Monday are considered to be in week 0. var weekDayNumber = DAY_NUMBERS_MON_FIRST[weekDay]; var weekNumber = parseInt(value); // January 1st var janFirst = new Date(date.year, 0, 1); var endDate; if (janFirst.getDay()===1) { // Jan 1st is a Monday, and, hence in the 1st CW endDate = __addDays(janFirst, weekDayNumber+7*(weekNumber-1)); } else { // Jan 1st is not a Monday, and, hence still in the 0th CW endDate = __addDays(janFirst, 7-janFirst.getDay()+1+weekDayNumber+7*(weekNumber-1)); } date.day = endDate.getDate(); date.month = endDate.getMonth(); } } /* tm_sec int seconds after the minute 0-61* tm_min int minutes after the hour 0-59 tm_hour int hours since midnight 0-23 tm_mday int day of the month 1-31 tm_mon int months since January 0-11 tm_year int years since 1900 tm_wday int days since Sunday 0-6 tm_yday int days since January 1 0-365 tm_isdst int Daylight Saving Time flag */ var fullDate = new Date(date.year, date.month, date.day, date.hour, date.min, date.sec, 0); {{{ makeSetValue('tm', C_STRUCTS.tm.tm_sec, 'fullDate.getSeconds()', 'i32') }}}; {{{ makeSetValue('tm', C_STRUCTS.tm.tm_min, 'fullDate.getMinutes()', 'i32') }}}; {{{ makeSetValue('tm', C_STRUCTS.tm.tm_hour, 'fullDate.getHours()', 'i32') }}}; {{{ makeSetValue('tm', C_STRUCTS.tm.tm_mday, 'fullDate.getDate()', 'i32') }}}; {{{ makeSetValue('tm', C_STRUCTS.tm.tm_mon, 'fullDate.getMonth()', 'i32') }}}; {{{ makeSetValue('tm', C_STRUCTS.tm.tm_year, 'fullDate.getFullYear()-1900', 'i32') }}}; {{{ makeSetValue('tm', C_STRUCTS.tm.tm_wday, 'fullDate.getDay()', 'i32') }}}; {{{ makeSetValue('tm', C_STRUCTS.tm.tm_yday, '__arraySum(__isLeapYear(fullDate.getFullYear()) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, fullDate.getMonth()-1)+fullDate.getDate()-1', 'i32') }}}; {{{ makeSetValue('tm', C_STRUCTS.tm.tm_isdst, '0', 'i32') }}}; // we need to convert the matched sequence into an integer array to take care of UTF-8 characters > 0x7F // TODO: not sure that intArrayFromString handles all unicode characters correctly return buf+intArrayFromString(matches[0]).length-1; } return 0; }, strptime_l__deps: ['strptime'], strptime_l: function(buf, format, tm) { return _strptime(buf, format, tm); // no locale support yet }, getdate: function(string) { // struct tm *getdate(const char *string); // http://pubs.opengroup.org/onlinepubs/009695399/functions/getdate.html // TODO: Implement. return 0; }, setitimer: function() { throw 'setitimer not implemented yet' }, getitimer: function() { throw 'getitimer not implemented yet' }, // ========================================================================== // sys/time.h // ========================================================================== nanosleep__deps: ['usleep'], nanosleep: function(rqtp, rmtp) { // int nanosleep(const struct timespec *rqtp, struct timespec *rmtp); var seconds = {{{ makeGetValue('rqtp', C_STRUCTS.timespec.tv_sec, 'i32') }}}; var nanoseconds = {{{ makeGetValue('rqtp', C_STRUCTS.timespec.tv_nsec, 'i32') }}}; if (rmtp !== 0) { {{{ makeSetValue('rmtp', C_STRUCTS.timespec.tv_sec, '0', 'i32') }}}; {{{ makeSetValue('rmtp', C_STRUCTS.timespec.tv_nsec, '0', 'i32') }}}; } return _usleep((seconds * 1e6) + (nanoseconds / 1000)); }, clock_gettime__deps: ['emscripten_get_now'], clock_gettime: function(clk_id, tp) { // int clock_gettime(clockid_t clk_id, struct timespec *tp); var now; if (clk_id === {{{ cDefine('CLOCK_REALTIME') }}}) { now = Date.now(); } else { now = _emscripten_get_now(); } {{{ makeSetValue('tp', C_STRUCTS.timespec.tv_sec, 'Math.floor(now/1000)', 'i32') }}}; // seconds {{{ makeSetValue('tp', C_STRUCTS.timespec.tv_nsec, 'Math.floor((now % 1000)*1000*1000)', 'i32') }}}; // nanoseconds return 0; }, clock_settime: function(clk_id, tp) { // int clock_settime(clockid_t clk_id, const struct timespec *tp); // Nothing. return 0; }, clock_getres__deps: ['emscripten_get_now_res'], clock_getres: function(clk_id, res) { // int clock_getres(clockid_t clk_id, struct timespec *res); var nsec; if (clk_id === {{{ cDefine('CLOCK_REALTIME') }}}) { nsec = 1000 * 1000; } else { nsec = _emscripten_get_now_res(); } {{{ makeSetValue('res', C_STRUCTS.timespec.tv_sec, '1', 'i32') }}}; {{{ makeSetValue('res', C_STRUCTS.timespec.tv_nsec, 'nsec', 'i32') }}} // resolution is milliseconds return 0; }, // http://pubs.opengroup.org/onlinepubs/000095399/basedefs/sys/time.h.html gettimeofday: function(ptr) { var now = Date.now(); {{{ makeSetValue('ptr', C_STRUCTS.timeval.tv_sec, 'Math.floor(now/1000)', 'i32') }}}; // seconds {{{ makeSetValue('ptr', C_STRUCTS.timeval.tv_usec, 'Math.floor((now-1000*Math.floor(now/1000))*1000)', 'i32') }}}; // microseconds return 0; }, // ========================================================================== // sys/timeb.h // ========================================================================== ftime: function(p) { var millis = Date.now(); {{{ makeSetValue('p', C_STRUCTS.timeb.time, 'Math.floor(millis/1000)', 'i32') }}}; {{{ makeSetValue('p', C_STRUCTS.timeb.millitm, 'millis % 1000', 'i16') }}}; {{{ makeSetValue('p', C_STRUCTS.timeb.timezone, '0', 'i16') }}}; // TODO {{{ makeSetValue('p', C_STRUCTS.timeb.dstflag, '0', 'i16') }}}; // TODO return 0; }, // ========================================================================== // sys/times.h // ========================================================================== times__deps: ['memset'], times: function(buffer) { // clock_t times(struct tms *buffer); // http://pubs.opengroup.org/onlinepubs/009695399/functions/times.html // NOTE: This is fake, since we can't calculate real CPU time usage in JS. if (buffer !== 0) { _memset(buffer, 0, {{{ C_STRUCTS.tms.__size__ }}}); } return 0; }, // ========================================================================== // sys/types.h // ========================================================================== // http://www.kernel.org/doc/man-pages/online/pages/man3/minor.3.html makedev: function(maj, min) { return ((maj) << 8 | (min)); }, gnu_dev_makedev: 'makedev', major: function(dev) { return ((dev) >> 8); }, gnu_dev_major: 'major', minor: function(dev) { return ((dev) & 0xff); }, gnu_dev_minor: 'minor', // ========================================================================== // setjmp.h // // Basic support for setjmp/longjmp: enough to run the wikipedia example and // hopefully handle most normal behavior. We do not support cases where // longjmp behavior is undefined (for example, if the setjmp function returns // before longjmp is called). // // Note that we need to emulate functions that use setjmp, and also to create // a new label we can return to. Emulation make such functions slower, this // can be alleviated by making a new function containing just the setjmp // related functionality so the slowdown is more limited - you may need // to prevent inlining to keep this isolated, try __attribute__((noinline)) // ========================================================================== saveSetjmp__asm: true, saveSetjmp__sig: 'iii', saveSetjmp__deps: ['putchar'], saveSetjmp: function(env, label, table) { // Not particularly fast: slow table lookup of setjmpId to label. But setjmp // prevents relooping anyhow, so slowness is to be expected. And typical case // is 1 setjmp per invocation, or less. env = env|0; label = label|0; table = table|0; var i = 0; setjmpId = (setjmpId+1)|0; {{{ makeSetValueAsm('env', '0', 'setjmpId', 'i32') }}}; while ((i|0) < {{{ MAX_SETJMPS }}}) { if ({{{ makeGetValueAsm('table', '(i<<3)', 'i32') }}} == 0) { {{{ makeSetValueAsm('table', '(i<<3)', 'setjmpId', 'i32') }}}; {{{ makeSetValueAsm('table', '(i<<3)+4', 'label', 'i32') }}}; // prepare next slot {{{ makeSetValueAsm('table', '(i<<3)+8', '0', 'i32') }}}; return 0; } i = i+1|0; } {{{ makePrintChars('too many setjmps in a function call, build with a higher value for MAX_SETJMPS') }}}; abort(0); return 0; }, testSetjmp__asm: true, testSetjmp__sig: 'iii', testSetjmp: function(id, table) { id = id|0; table = table|0; var i = 0, curr = 0; while ((i|0) < {{{ MAX_SETJMPS }}}) { curr = {{{ makeGetValueAsm('table', '(i<<3)', 'i32') }}}; if ((curr|0) == 0) break; if ((curr|0) == (id|0)) { return {{{ makeGetValueAsm('table', '(i<<3)+4', 'i32') }}}; } i = i+1|0; } return 0; }, #if ASM_JS setjmp__deps: ['saveSetjmp', 'testSetjmp'], #endif setjmp__inline: function(env) { // Save the label #if ASM_JS return '_saveSetjmp(' + env + ', label, setjmpTable)|0'; #else return '(tempInt = setjmpId++, mySetjmpIds[tempInt] = 1, setjmpLabels[tempInt] = label,' + makeSetValue(env, '0', 'tempInt', 'i32', undefined, undefined, undefined, undefined, ',') + ', 0)'; #endif }, #if ASM_JS longjmp__deps: ['saveSetjmp', 'testSetjmp'], #endif longjmp: function(env, value) { #if ASM_JS asm['setThrew'](env, value || 1); throw 'longjmp'; #else throw { longjmp: true, id: {{{ makeGetValue('env', '0', 'i32') }}}, value: value || 1 }; #endif }, emscripten_longjmp__deps: ['longjmp'], emscripten_longjmp: function(env, value) { _longjmp(env, value); }, // ========================================================================== // signal.h // ========================================================================== signal: function(sig, func) { // TODO return 0; }, sigemptyset: function(set) { // int sigemptyset(sigset_t *set); {{{ makeSetValue('set', '0', '0', 'i32') }}}; return 0; }, sigfillset: function(set) { {{{ makeSetValue('set', '0', '-1>>>0', 'i32') }}}; return 0; }, sigaddset: function(set, signum) { {{{ makeSetValue('set', '0', makeGetValue('set', '0', 'i32') + '| (1 << (signum-1))', 'i32') }}}; return 0; }, sigdelset: function(set, signum) { {{{ makeSetValue('set', '0', makeGetValue('set', '0', 'i32') + '& (~(1 << (signum-1)))', 'i32') }}}; return 0; }, sigismember: function(set, signum) { return {{{ makeGetValue('set', '0', 'i32') }}} & (1 << (signum-1)); }, sigaction: function(set) { // TODO: return 0; }, sigprocmask: 'sigaction', __libc_current_sigrtmin: function() { return 0; }, __libc_current_sigrtmax: function() { return 0; }, kill__deps: ['$ERRNO_CODES', '__setErrNo'], kill: function(pid, sig) { // int kill(pid_t pid, int sig); // http://pubs.opengroup.org/onlinepubs/000095399/functions/kill.html // Makes no sense in a single-process environment. ___setErrNo(ERRNO_CODES.EPERM); return -1; }, killpg: 'kill', siginterrupt: function() { throw 'siginterrupt not implemented' }, raise__deps: ['$ERRNO_CODES', '__setErrNo'], raise: function(sig) { ___setErrNo(ERRNO_CODES.ENOSYS); #if ASSERTIONS Runtime.warnOnce('raise() returning an error as we do not support it'); #endif return -1; }, // ========================================================================== // sys/wait.h // ========================================================================== wait__deps: ['$ERRNO_CODES', '__setErrNo'], wait: function(stat_loc) { // pid_t wait(int *stat_loc); // http://pubs.opengroup.org/onlinepubs/009695399/functions/wait.html // Makes no sense in a single-process environment. ___setErrNo(ERRNO_CODES.ECHILD); return -1; }, // NOTE: These aren't really the same, but we use the same stub for them all. waitid: 'wait', waitpid: 'wait', wait3: 'wait', wait4: 'wait', // ========================================================================== // locale.h // ========================================================================== newlocale__deps: ['malloc'], newlocale: function(mask, locale, base) { return _malloc({{{ QUANTUM_SIZE}}}); }, freelocale__deps: ['free'], freelocale: function(locale) { _free(locale); }, uselocale: function(locale) { return 0; }, setlocale: function(category, locale) { if (!_setlocale.ret) _setlocale.ret = allocate([0], 'i8', ALLOC_NORMAL); return _setlocale.ret; }, localeconv: function() { // %struct.timeval = type { char* decimal point, other stuff... } // var indexes = Runtime.calculateStructAlignment({ fields: ['i32', 'i32'] }); var me = _localeconv; if (!me.ret) { // These are defaults from the "C" locale me.ret = allocate([ allocate(intArrayFromString('.'), 'i8', ALLOC_NORMAL),0,0,0, // decimal_point allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0, // thousands_sep allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0, // grouping allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0, // int_curr_symbol allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0, // currency_symbol allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0, // mon_decimal_point allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0, // mon_thousands_sep allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0, // mon_grouping allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0, // positive_sign allocate(intArrayFromString(''), 'i8', ALLOC_NORMAL),0,0,0 // negative_sign ], 'i8*', ALLOC_NORMAL); // Allocate strings in lconv, still don't allocate chars } return me.ret; }, __locale_mb_cur_max: function() { throw '__locale_mb_cur_max not implemented' }, // ========================================================================== // langinfo.h // ========================================================================== nl_langinfo__deps: ['malloc'], nl_langinfo: function(item) { // char *nl_langinfo(nl_item item); // http://pubs.opengroup.org/onlinepubs/000095399/functions/nl_langinfo.html var result; switch (item) { case {{{ cDefine('CODESET') }}}: result = 'ANSI_X3.4-1968'; break; case {{{ cDefine('D_T_FMT') }}}: result = '%a %b %e %H:%M:%S %Y'; break; case {{{ cDefine('D_FMT') }}}: result = '%m/%d/%y'; break; case {{{ cDefine('T_FMT') }}}: result = '%H:%M:%S'; break; case {{{ cDefine('T_FMT_AMPM') }}}: result = '%I:%M:%S %p'; break; case {{{ cDefine('AM_STR') }}}: result = 'AM'; break; case {{{ cDefine('PM_STR') }}}: result = 'PM'; break; case {{{ cDefine('DAY_1') }}}: result = 'Sunday'; break; case {{{ cDefine('DAY_2') }}}: result = 'Monday'; break; case {{{ cDefine('DAY_3') }}}: result = 'Tuesday'; break; case {{{ cDefine('DAY_4') }}}: result = 'Wednesday'; break; case {{{ cDefine('DAY_5') }}}: result = 'Thursday'; break; case {{{ cDefine('DAY_6') }}}: result = 'Friday'; break; case {{{ cDefine('DAY_7') }}}: result = 'Saturday'; break; case {{{ cDefine('ABDAY_1') }}}: result = 'Sun'; break; case {{{ cDefine('ABDAY_2') }}}: result = 'Mon'; break; case {{{ cDefine('ABDAY_3') }}}: result = 'Tue'; break; case {{{ cDefine('ABDAY_4') }}}: result = 'Wed'; break; case {{{ cDefine('ABDAY_5') }}}: result = 'Thu'; break; case {{{ cDefine('ABDAY_6') }}}: result = 'Fri'; break; case {{{ cDefine('ABDAY_7') }}}: result = 'Sat'; break; case {{{ cDefine('MON_1') }}}: result = 'January'; break; case {{{ cDefine('MON_2') }}}: result = 'February'; break; case {{{ cDefine('MON_3') }}}: result = 'March'; break; case {{{ cDefine('MON_4') }}}: result = 'April'; break; case {{{ cDefine('MON_5') }}}: result = 'May'; break; case {{{ cDefine('MON_6') }}}: result = 'June'; break; case {{{ cDefine('MON_7') }}}: result = 'July'; break; case {{{ cDefine('MON_8') }}}: result = 'August'; break; case {{{ cDefine('MON_9') }}}: result = 'September'; break; case {{{ cDefine('MON_10') }}}: result = 'October'; break; case {{{ cDefine('MON_11') }}}: result = 'November'; break; case {{{ cDefine('MON_12') }}}: result = 'December'; break; case {{{ cDefine('ABMON_1') }}}: result = 'Jan'; break; case {{{ cDefine('ABMON_2') }}}: result = 'Feb'; break; case {{{ cDefine('ABMON_3') }}}: result = 'Mar'; break; case {{{ cDefine('ABMON_4') }}}: result = 'Apr'; break; case {{{ cDefine('ABMON_5') }}}: result = 'May'; break; case {{{ cDefine('ABMON_6') }}}: result = 'Jun'; break; case {{{ cDefine('ABMON_7') }}}: result = 'Jul'; break; case {{{ cDefine('ABMON_8') }}}: result = 'Aug'; break; case {{{ cDefine('ABMON_9') }}}: result = 'Sep'; break; case {{{ cDefine('ABMON_10') }}}: result = 'Oct'; break; case {{{ cDefine('ABMON_11') }}}: result = 'Nov'; break; case {{{ cDefine('ABMON_12') }}}: result = 'Dec'; break; case {{{ cDefine('ALT_DIGITS') }}}: result = ''; break; case {{{ cDefine('RADIXCHAR') }}}: result = '.'; break; case {{{ cDefine('THOUSEP') }}}: result = ''; break; case {{{ cDefine('YESEXPR') }}}: result = '^[yY]'; break; case {{{ cDefine('NOEXPR') }}}: result = '^[nN]'; break; case {{{ cDefine('CRNCYSTR') }}}: result = '-'; break; case {{{ cDefine('ERA') }}}: case {{{ cDefine('ERA_D_FMT') }}}: case {{{ cDefine('ERA_D_T_FMT') }}}: case {{{ cDefine('ERA_T_FMT') }}}: default: result = ''; break; } var me = _nl_langinfo; if (!me.ret) me.ret = _malloc(32); writeAsciiToMemory(result, me.ret); return me.ret; }, // ========================================================================== // errno.h // ========================================================================== $ERRNO_CODES: { EPERM: {{{ cDefine('EPERM') }}}, ENOENT: {{{ cDefine('ENOENT') }}}, ESRCH: {{{ cDefine('ESRCH') }}}, EINTR: {{{ cDefine('EINTR') }}}, EIO: {{{ cDefine('EIO') }}}, ENXIO: {{{ cDefine('ENXIO') }}}, E2BIG: {{{ cDefine('E2BIG') }}}, ENOEXEC: {{{ cDefine('ENOEXEC') }}}, EBADF: {{{ cDefine('EBADF') }}}, ECHILD: {{{ cDefine('ECHILD') }}}, EAGAIN: {{{ cDefine('EAGAIN') }}}, EWOULDBLOCK: {{{ cDefine('EWOULDBLOCK') }}}, ENOMEM: {{{ cDefine('ENOMEM') }}}, EACCES: {{{ cDefine('EACCES') }}}, EFAULT: {{{ cDefine('EFAULT') }}}, ENOTBLK: {{{ cDefine('ENOTBLK') }}}, EBUSY: {{{ cDefine('EBUSY') }}}, EEXIST: {{{ cDefine('EEXIST') }}}, EXDEV: {{{ cDefine('EXDEV') }}}, ENODEV: {{{ cDefine('ENODEV') }}}, ENOTDIR: {{{ cDefine('ENOTDIR') }}}, EISDIR: {{{ cDefine('EISDIR') }}}, EINVAL: {{{ cDefine('EINVAL') }}}, ENFILE: {{{ cDefine('ENFILE') }}}, EMFILE: {{{ cDefine('EMFILE') }}}, ENOTTY: {{{ cDefine('ENOTTY') }}}, ETXTBSY: {{{ cDefine('ETXTBSY') }}}, EFBIG: {{{ cDefine('EFBIG') }}}, ENOSPC: {{{ cDefine('ENOSPC') }}}, ESPIPE: {{{ cDefine('ESPIPE') }}}, EROFS: {{{ cDefine('EROFS') }}}, EMLINK: {{{ cDefine('EMLINK') }}}, EPIPE: {{{ cDefine('EPIPE') }}}, EDOM: {{{ cDefine('EDOM') }}}, ERANGE: {{{ cDefine('ERANGE') }}}, ENOMSG: {{{ cDefine('ENOMSG') }}}, EIDRM: {{{ cDefine('EIDRM') }}}, ECHRNG: {{{ cDefine('ECHRNG') }}}, EL2NSYNC: {{{ cDefine('EL2NSYNC') }}}, EL3HLT: {{{ cDefine('EL3HLT') }}}, EL3RST: {{{ cDefine('EL3RST') }}}, ELNRNG: {{{ cDefine('ELNRNG') }}}, EUNATCH: {{{ cDefine('EUNATCH') }}}, ENOCSI: {{{ cDefine('ENOCSI') }}}, EL2HLT: {{{ cDefine('EL2HLT') }}}, EDEADLK: {{{ cDefine('EDEADLK') }}}, ENOLCK: {{{ cDefine('ENOLCK') }}}, EBADE: {{{ cDefine('EBADE') }}}, EBADR: {{{ cDefine('EBADR') }}}, EXFULL: {{{ cDefine('EXFULL') }}}, ENOANO: {{{ cDefine('ENOANO') }}}, EBADRQC: {{{ cDefine('EBADRQC') }}}, EBADSLT: {{{ cDefine('EBADSLT') }}}, EDEADLOCK: {{{ cDefine('EDEADLOCK') }}}, EBFONT: {{{ cDefine('EBFONT') }}}, ENOSTR: {{{ cDefine('ENOSTR') }}}, ENODATA: {{{ cDefine('ENODATA') }}}, ETIME: {{{ cDefine('ETIME') }}}, ENOSR: {{{ cDefine('ENOSR') }}}, ENONET: {{{ cDefine('ENONET') }}}, ENOPKG: {{{ cDefine('ENOPKG') }}}, EREMOTE: {{{ cDefine('EREMOTE') }}}, ENOLINK: {{{ cDefine('ENOLINK') }}}, EADV: {{{ cDefine('EADV') }}}, ESRMNT: {{{ cDefine('ESRMNT') }}}, ECOMM: {{{ cDefine('ECOMM') }}}, EPROTO: {{{ cDefine('EPROTO') }}}, EMULTIHOP: {{{ cDefine('EMULTIHOP') }}}, EDOTDOT: {{{ cDefine('EDOTDOT') }}}, EBADMSG: {{{ cDefine('EBADMSG') }}}, ENOTUNIQ: {{{ cDefine('ENOTUNIQ') }}}, EBADFD: {{{ cDefine('EBADFD') }}}, EREMCHG: {{{ cDefine('EREMCHG') }}}, ELIBACC: {{{ cDefine('ELIBACC') }}}, ELIBBAD: {{{ cDefine('ELIBBAD') }}}, ELIBSCN: {{{ cDefine('ELIBSCN') }}}, ELIBMAX: {{{ cDefine('ELIBMAX') }}}, ELIBEXEC: {{{ cDefine('ELIBEXEC') }}}, ENOSYS: {{{ cDefine('ENOSYS') }}}, ENOTEMPTY: {{{ cDefine('ENOTEMPTY') }}}, ENAMETOOLONG: {{{ cDefine('ENAMETOOLONG') }}}, ELOOP: {{{ cDefine('ELOOP') }}}, EOPNOTSUPP: {{{ cDefine('EOPNOTSUPP') }}}, EPFNOSUPPORT: {{{ cDefine('EPFNOSUPPORT') }}}, ECONNRESET: {{{ cDefine('ECONNRESET') }}}, ENOBUFS: {{{ cDefine('ENOBUFS') }}}, EAFNOSUPPORT: {{{ cDefine('EAFNOSUPPORT') }}}, EPROTOTYPE: {{{ cDefine('EPROTOTYPE') }}}, ENOTSOCK: {{{ cDefine('ENOTSOCK') }}}, ENOPROTOOPT: {{{ cDefine('ENOPROTOOPT') }}}, ESHUTDOWN: {{{ cDefine('ESHUTDOWN') }}}, ECONNREFUSED: {{{ cDefine('ECONNREFUSED') }}}, EADDRINUSE: {{{ cDefine('EADDRINUSE') }}}, ECONNABORTED: {{{ cDefine('ECONNABORTED') }}}, ENETUNREACH: {{{ cDefine('ENETUNREACH') }}}, ENETDOWN: {{{ cDefine('ENETDOWN') }}}, ETIMEDOUT: {{{ cDefine('ETIMEDOUT') }}}, EHOSTDOWN: {{{ cDefine('EHOSTDOWN') }}}, EHOSTUNREACH: {{{ cDefine('EHOSTUNREACH') }}}, EINPROGRESS: {{{ cDefine('EINPROGRESS') }}}, EALREADY: {{{ cDefine('EALREADY') }}}, EDESTADDRREQ: {{{ cDefine('EDESTADDRREQ') }}}, EMSGSIZE: {{{ cDefine('EMSGSIZE') }}}, EPROTONOSUPPORT: {{{ cDefine('EPROTONOSUPPORT') }}}, ESOCKTNOSUPPORT: {{{ cDefine('ESOCKTNOSUPPORT') }}}, EADDRNOTAVAIL: {{{ cDefine('EADDRNOTAVAIL') }}}, ENETRESET: {{{ cDefine('ENETRESET') }}}, EISCONN: {{{ cDefine('EISCONN') }}}, ENOTCONN: {{{ cDefine('ENOTCONN') }}}, ETOOMANYREFS: {{{ cDefine('ETOOMANYREFS') }}}, EUSERS: {{{ cDefine('EUSERS') }}}, EDQUOT: {{{ cDefine('EDQUOT') }}}, ESTALE: {{{ cDefine('ESTALE') }}}, ENOTSUP: {{{ cDefine('ENOTSUP') }}}, ENOMEDIUM: {{{ cDefine('ENOMEDIUM') }}}, EILSEQ: {{{ cDefine('EILSEQ') }}}, EOVERFLOW: {{{ cDefine('EOVERFLOW') }}}, ECANCELED: {{{ cDefine('ECANCELED') }}}, ENOTRECOVERABLE: {{{ cDefine('ENOTRECOVERABLE') }}}, EOWNERDEAD: {{{ cDefine('EOWNERDEAD') }}}, ESTRPIPE: {{{ cDefine('ESTRPIPE') }}}, }, $ERRNO_MESSAGES: { 0: 'Success', {{{ cDefine('EPERM') }}}: 'Not super-user', {{{ cDefine('ENOENT') }}}: 'No such file or directory', {{{ cDefine('ESRCH') }}}: 'No such process', {{{ cDefine('EINTR') }}}: 'Interrupted system call', {{{ cDefine('EIO') }}}: 'I/O error', {{{ cDefine('ENXIO') }}}: 'No such device or address', {{{ cDefine('E2BIG') }}}: 'Arg list too long', {{{ cDefine('ENOEXEC') }}}: 'Exec format error', {{{ cDefine('EBADF') }}}: 'Bad file number', {{{ cDefine('ECHILD') }}}: 'No children', {{{ cDefine('EWOULDBLOCK') }}}: 'No more processes', {{{ cDefine('ENOMEM') }}}: 'Not enough core', {{{ cDefine('EACCES') }}}: 'Permission denied', {{{ cDefine('EFAULT') }}}: 'Bad address', {{{ cDefine('ENOTBLK') }}}: 'Block device required', {{{ cDefine('EBUSY') }}}: 'Mount device busy', {{{ cDefine('EEXIST') }}}: 'File exists', {{{ cDefine('EXDEV') }}}: 'Cross-device link', {{{ cDefine('ENODEV') }}}: 'No such device', {{{ cDefine('ENOTDIR') }}}: 'Not a directory', {{{ cDefine('EISDIR') }}}: 'Is a directory', {{{ cDefine('EINVAL') }}}: 'Invalid argument', {{{ cDefine('ENFILE') }}}: 'Too many open files in system', {{{ cDefine('EMFILE') }}}: 'Too many open files', {{{ cDefine('ENOTTY') }}}: 'Not a typewriter', {{{ cDefine('ETXTBSY') }}}: 'Text file busy', {{{ cDefine('EFBIG') }}}: 'File too large', {{{ cDefine('ENOSPC') }}}: 'No space left on device', {{{ cDefine('ESPIPE') }}}: 'Illegal seek', {{{ cDefine('EROFS') }}}: 'Read only file system', {{{ cDefine('EMLINK') }}}: 'Too many links', {{{ cDefine('EPIPE') }}}: 'Broken pipe', {{{ cDefine('EDOM') }}}: 'Math arg out of domain of func', {{{ cDefine('ERANGE') }}}: 'Math result not representable', {{{ cDefine('ENOMSG') }}}: 'No message of desired type', {{{ cDefine('EIDRM') }}}: 'Identifier removed', {{{ cDefine('ECHRNG') }}}: 'Channel number out of range', {{{ cDefine('EL2NSYNC') }}}: 'Level 2 not synchronized', {{{ cDefine('EL3HLT') }}}: 'Level 3 halted', {{{ cDefine('EL3RST') }}}: 'Level 3 reset', {{{ cDefine('ELNRNG') }}}: 'Link number out of range', {{{ cDefine('EUNATCH') }}}: 'Protocol driver not attached', {{{ cDefine('ENOCSI') }}}: 'No CSI structure available', {{{ cDefine('EL2HLT') }}}: 'Level 2 halted', {{{ cDefine('EDEADLK') }}}: 'Deadlock condition', {{{ cDefine('ENOLCK') }}}: 'No record locks available', {{{ cDefine('EBADE') }}}: 'Invalid exchange', {{{ cDefine('EBADR') }}}: 'Invalid request descriptor', {{{ cDefine('EXFULL') }}}: 'Exchange full', {{{ cDefine('ENOANO') }}}: 'No anode', {{{ cDefine('EBADRQC') }}}: 'Invalid request code', {{{ cDefine('EBADSLT') }}}: 'Invalid slot', {{{ cDefine('EDEADLOCK') }}}: 'File locking deadlock error', {{{ cDefine('EBFONT') }}}: 'Bad font file fmt', {{{ cDefine('ENOSTR') }}}: 'Device not a stream', {{{ cDefine('ENODATA') }}}: 'No data (for no delay io)', {{{ cDefine('ETIME') }}}: 'Timer expired', {{{ cDefine('ENOSR') }}}: 'Out of streams resources', {{{ cDefine('ENONET') }}}: 'Machine is not on the network', {{{ cDefine('ENOPKG') }}}: 'Package not installed', {{{ cDefine('EREMOTE') }}}: 'The object is remote', {{{ cDefine('ENOLINK') }}}: 'The link has been severed', {{{ cDefine('EADV') }}}: 'Advertise error', {{{ cDefine('ESRMNT') }}}: 'Srmount error', {{{ cDefine('ECOMM') }}}: 'Communication error on send', {{{ cDefine('EPROTO') }}}: 'Protocol error', {{{ cDefine('EMULTIHOP') }}}: 'Multihop attempted', {{{ cDefine('EDOTDOT') }}}: 'Cross mount point (not really error)', {{{ cDefine('EBADMSG') }}}: 'Trying to read unreadable message', {{{ cDefine('ENOTUNIQ') }}}: 'Given log. name not unique', {{{ cDefine('EBADFD') }}}: 'f.d. invalid for this operation', {{{ cDefine('EREMCHG') }}}: 'Remote address changed', {{{ cDefine('ELIBACC') }}}: 'Can access a needed shared lib', {{{ cDefine('ELIBBAD') }}}: 'Accessing a corrupted shared lib', {{{ cDefine('ELIBSCN') }}}: '.lib section in a.out corrupted', {{{ cDefine('ELIBMAX') }}}: 'Attempting to link in too many libs', {{{ cDefine('ELIBEXEC') }}}: 'Attempting to exec a shared library', {{{ cDefine('ENOSYS') }}}: 'Function not implemented', {{{ cDefine('ENOTEMPTY') }}}: 'Directory not empty', {{{ cDefine('ENAMETOOLONG') }}}: 'File or path name too long', {{{ cDefine('ELOOP') }}}: 'Too many symbolic links', {{{ cDefine('EOPNOTSUPP') }}}: 'Operation not supported on transport endpoint', {{{ cDefine('EPFNOSUPPORT') }}}: 'Protocol family not supported', {{{ cDefine('ECONNRESET') }}}: 'Connection reset by peer', {{{ cDefine('ENOBUFS') }}}: 'No buffer space available', {{{ cDefine('EAFNOSUPPORT') }}}: 'Address family not supported by protocol family', {{{ cDefine('EPROTOTYPE') }}}: 'Protocol wrong type for socket', {{{ cDefine('ENOTSOCK') }}}: 'Socket operation on non-socket', {{{ cDefine('ENOPROTOOPT') }}}: 'Protocol not available', {{{ cDefine('ESHUTDOWN') }}}: 'Can\'t send after socket shutdown', {{{ cDefine('ECONNREFUSED') }}}: 'Connection refused', {{{ cDefine('EADDRINUSE') }}}: 'Address already in use', {{{ cDefine('ECONNABORTED') }}}: 'Connection aborted', {{{ cDefine('ENETUNREACH') }}}: 'Network is unreachable', {{{ cDefine('ENETDOWN') }}}: 'Network interface is not configured', {{{ cDefine('ETIMEDOUT') }}}: 'Connection timed out', {{{ cDefine('EHOSTDOWN') }}}: 'Host is down', {{{ cDefine('EHOSTUNREACH') }}}: 'Host is unreachable', {{{ cDefine('EINPROGRESS') }}}: 'Connection already in progress', {{{ cDefine('EALREADY') }}}: 'Socket already connected', {{{ cDefine('EDESTADDRREQ') }}}: 'Destination address required', {{{ cDefine('EMSGSIZE') }}}: 'Message too long', {{{ cDefine('EPROTONOSUPPORT') }}}: 'Unknown protocol', {{{ cDefine('ESOCKTNOSUPPORT') }}}: 'Socket type not supported', {{{ cDefine('EADDRNOTAVAIL') }}}: 'Address not available', {{{ cDefine('ENETRESET') }}}: 'Connection reset by network', {{{ cDefine('EISCONN') }}}: 'Socket is already connected', {{{ cDefine('ENOTCONN') }}}: 'Socket is not connected', {{{ cDefine('ETOOMANYREFS') }}}: 'Too many references', {{{ cDefine('EUSERS') }}}: 'Too many users', {{{ cDefine('EDQUOT') }}}: 'Quota exceeded', {{{ cDefine('ESTALE') }}}: 'Stale file handle', {{{ cDefine('ENOTSUP') }}}: 'Not supported', {{{ cDefine('ENOMEDIUM') }}}: 'No medium (in tape drive)', {{{ cDefine('EILSEQ') }}}: 'Illegal byte sequence', {{{ cDefine('EOVERFLOW') }}}: 'Value too large for defined data type', {{{ cDefine('ECANCELED') }}}: 'Operation canceled', {{{ cDefine('ENOTRECOVERABLE') }}}: 'State not recoverable', {{{ cDefine('EOWNERDEAD') }}}: 'Previous owner died', {{{ cDefine('ESTRPIPE') }}}: 'Streams pipe error', }, __errno_state: 0, __setErrNo__deps: ['__errno_state'], __setErrNo__postset: '___errno_state = Runtime.staticAlloc(4); {{{ makeSetValue("___errno_state", 0, 0, "i32") }}};', __setErrNo: function(value) { // For convenient setting and returning of errno. {{{ makeSetValue('___errno_state', '0', 'value', 'i32') }}}; return value; }, __errno_location__deps: ['__setErrNo'], __errno_location: function() { return ___errno_state; }, __errno: '__errno_location', // ========================================================================== // sys/resource.h // ========================================================================== // TODO: Implement for real. getrlimit: function(resource, rlp) { // int getrlimit(int resource, struct rlimit *rlp); {{{ makeSetValue('rlp', C_STRUCTS.rlimit.rlim_cur, '-1', 'i32') }}} // RLIM_INFINITY {{{ makeSetValue('rlp', C_STRUCTS.rlimit.rlim_max, '-1', 'i32') }}} // RLIM_INFINITY return 0; }, setrlimit: function(resource, rlp) { // int setrlimit(int resource, const struct rlimit *rlp) return 0; }, // TODO: Implement for real. We just do time used, and no useful data getrusage: function(resource, rlp) { // int getrusage(int resource, struct rusage *rlp); {{{ makeSetValue('rlp', C_STRUCTS.rusage.ru_utime.tv_sec, '1', 'i32') }}}; {{{ makeSetValue('rlp', C_STRUCTS.rusage.ru_utime.tv_usec, '2', 'i32') }}}; {{{ makeSetValue('rlp', C_STRUCTS.rusage.ru_stime.tv_sec, '3', 'i32') }}}; {{{ makeSetValue('rlp', C_STRUCTS.rusage.ru_stime.tv_usec, '4', 'i32') }}}; return 0; }, // ========================================================================== // sched.h (stubs only - no thread support yet!) // ========================================================================== sched_yield: function() { return 0; }, // ========================================================================== // pthread.h (stubs for mutexes only - no thread support yet!) // ========================================================================== pthread_mutex_init: function() {}, pthread_mutex_destroy: function() {}, pthread_mutexattr_init: function() {}, pthread_mutexattr_settype: function() {}, pthread_mutexattr_destroy: function() {}, pthread_mutex_lock: function() {}, pthread_mutex_unlock: function() {}, pthread_mutex_trylock: function() { return 0; }, pthread_mutexattr_setpshared: function(attr, pshared) { // XXX implement if/when getpshared is required return 0; }, pthread_cond_init: function() {}, pthread_cond_destroy: function() {}, pthread_cond_broadcast: function() { return 0; }, pthread_cond_wait: function() { return 0; }, pthread_cond_timedwait: function() { return 0; }, pthread_self: function() { //FIXME: assumes only a single thread return 0; }, pthread_attr_init: function(attr) { /* int pthread_attr_init(pthread_attr_t *attr); */ //FIXME: should allocate a pthread_attr_t return 0; }, pthread_getattr_np: function(thread, attr) { /* int pthread_getattr_np(pthread_t thread, pthread_attr_t *attr); */ //FIXME: should fill in attributes of the given thread in pthread_attr_t return 0; }, pthread_attr_destroy: function(attr) { /* int pthread_attr_destroy(pthread_attr_t *attr); */ //FIXME: should destroy the pthread_attr_t struct return 0; }, pthread_attr_getstack: function(attr, stackaddr, stacksize) { /* int pthread_attr_getstack(const pthread_attr_t *restrict attr, void **restrict stackaddr, size_t *restrict stacksize); */ /*FIXME: assumes that there is only one thread, and that attr is the current thread*/ {{{ makeSetValue('stackaddr', '0', 'STACK_BASE', 'i8*') }}}; {{{ makeSetValue('stacksize', '0', 'TOTAL_STACK', 'i32') }}}; return 0; }, pthread_once: function(ptr, func) { if (!_pthread_once.seen) _pthread_once.seen = {}; if (ptr in _pthread_once.seen) return; Runtime.dynCall('v', func); _pthread_once.seen[ptr] = 1; }, $PTHREAD_SPECIFIC: {}, $PTHREAD_SPECIFIC_NEXT_KEY: 1, pthread_key_create__deps: ['$PTHREAD_SPECIFIC', '$PTHREAD_SPECIFIC_NEXT_KEY', '$ERRNO_CODES'], pthread_key_create: function(key, destructor) { if (key == 0) { return ERRNO_CODES.EINVAL; } {{{ makeSetValue('key', '0', 'PTHREAD_SPECIFIC_NEXT_KEY', 'i32*') }}}; // values start at 0 PTHREAD_SPECIFIC[PTHREAD_SPECIFIC_NEXT_KEY] = 0; PTHREAD_SPECIFIC_NEXT_KEY++; return 0; }, pthread_getspecific__deps: ['$PTHREAD_SPECIFIC'], pthread_getspecific: function(key) { return PTHREAD_SPECIFIC[key] || 0; }, pthread_setspecific__deps: ['$PTHREAD_SPECIFIC', '$ERRNO_CODES'], pthread_setspecific: function(key, value) { if (!(key in PTHREAD_SPECIFIC)) { return ERRNO_CODES.EINVAL; } PTHREAD_SPECIFIC[key] = value; return 0; }, pthread_key_delete__deps: ['$PTHREAD_SPECIFIC', '$ERRNO_CODES'], pthread_key_delete: function(key) { if (key in PTHREAD_SPECIFIC) { delete PTHREAD_SPECIFIC[key]; return 0; } return ERRNO_CODES.EINVAL; }, pthread_cleanup_push: function(routine, arg) { __ATEXIT__.push({ func: function() { Runtime.dynCall('vi', routine, [arg]) } }) _pthread_cleanup_push.level = __ATEXIT__.length; }, pthread_cleanup_pop: function() { assert(_pthread_cleanup_push.level == __ATEXIT__.length, 'cannot pop if something else added meanwhile!'); __ATEXIT__.pop(); _pthread_cleanup_push.level = __ATEXIT__.length; }, pthread_rwlock_init: function() { return 0; // XXX }, // ========================================================================== // malloc.h // ========================================================================== memalign: function(boundary, size) { // leaks, and even returns an invalid pointer. Horrible hack... but then, this is a deprecated function... var ret = Runtime.staticAlloc(size + boundary); return ret + boundary - (ret % boundary); }, posix_memalign__deps: ['memalign'], posix_memalign: function(memptr, alignment, size) { var ptr = _memalign(alignment, size); {{{ makeSetValue('memptr', '0', 'ptr', 'i8*') }}}; return 0; }, // ========================================================================== // arpa/inet.h // ========================================================================== htonl: function(value) { return ((value & 0xff) << 24) + ((value & 0xff00) << 8) + ((value & 0xff0000) >>> 8) + ((value & 0xff000000) >>> 24); }, htons: function(value) { return ((value & 0xff) << 8) + ((value & 0xff00) >> 8); }, ntohl: 'htonl', ntohs: 'htons', // old ipv4 only functions inet_addr__deps: ['_inet_pton4_raw'], inet_addr: function(ptr) { var addr = __inet_pton4_raw(Pointer_stringify(ptr)); if (addr === null) { return -1; } return addr; }, inet_ntoa__deps: ['_inet_ntop4_raw', 'malloc'], inet_ntoa: function(in_addr) { if (!_inet_ntoa.buffer) { _inet_ntoa.buffer = _malloc(1024); } var addr = {{{ makeGetValue('in_addr', '0', 'i32') }}}; var str = __inet_ntop4_raw(addr); writeStringToMemory(str.substr(0, 1024), _inet_ntoa.buffer); return _inet_ntoa.buffer; }, inet_aton__deps: ['_inet_pton4_raw'], inet_aton: function(cp, inp) { var addr = __inet_pton4_raw(Pointer_stringify(cp)); if (addr === null) { return 0; } {{{ makeSetValue('inp', '0', 'addr', 'i32') }}}; return 1; }, // new ipv4 / ipv6 functions _inet_ntop4_raw: function(addr) { return (addr & 0xff) + '.' + ((addr >> 8) & 0xff) + '.' + ((addr >> 16) & 0xff) + '.' + ((addr >> 24) & 0xff) }, _inet_ntop4__deps: ['__setErrNo', '$ERRNO_CODES', '_inet_ntop4_raw'], _inet_ntop4: function(src, dst, size) { var addr = {{{ makeGetValue('src', '0', 'i32') }}}; var str = __inet_ntop4_raw(addr); if (str.length+1 > size) { ___setErrNo(ERRNO_CODES.ENOSPC); return 0; } writeStringToMemory(str, dst); return dst; }, _inet_ntop6_raw__deps: ['ntohs', '_inet_ntop4_raw'], _inet_ntop6_raw: function(ints) { // ref: http://www.ietf.org/rfc/rfc2373.txt - section 2.5.4 // Format for IPv4 compatible and mapped 128-bit IPv6 Addresses // 128-bits are split into eight 16-bit words // stored in network byte order (big-endian) // | 80 bits | 16 | 32 bits | // +-----------------------------------------------------------------+ // | 10 bytes | 2 | 4 bytes | // +--------------------------------------+--------------------------+ // + 5 words | 1 | 2 words | // +--------------------------------------+--------------------------+ // |0000..............................0000|0000| IPv4 ADDRESS | (compatible) // +--------------------------------------+----+---------------------+ // |0000..............................0000|FFFF| IPv4 ADDRESS | (mapped) // +--------------------------------------+----+---------------------+ var str = ""; var word = 0; var longest = 0; var lastzero = 0; var zstart = 0; var len = 0; var i = 0; var parts = [ ints[0] & 0xffff, (ints[0] >> 16), ints[1] & 0xffff, (ints[1] >> 16), ints[2] & 0xffff, (ints[2] >> 16), ints[3] & 0xffff, (ints[3] >> 16) ]; // Handle IPv4-compatible, IPv4-mapped, loopback and any/unspecified addresses var hasipv4 = true; var v4part = ""; // check if the 10 high-order bytes are all zeros (first 5 words) for (i = 0; i < 5; i++) { if (parts[i] !== 0) { hasipv4 = false; break; } } if (hasipv4) { // low-order 32-bits store an IPv4 address (bytes 13 to 16) (last 2 words) v4part = __inet_ntop4_raw(parts[6] | (parts[7] << 16)); // IPv4-mapped IPv6 address if 16-bit value (bytes 11 and 12) == 0xFFFF (6th word) if (parts[5] === -1) { str = "::ffff:"; str += v4part; return str; } // IPv4-compatible IPv6 address if 16-bit value (bytes 11 and 12) == 0x0000 (6th word) if (parts[5] === 0) { str = "::"; //special case IPv6 addresses if(v4part === "0.0.0.0") v4part = ""; // any/unspecified address if(v4part === "0.0.0.1") v4part = "1";// loopback address str += v4part; return str; } } // Handle all other IPv6 addresses // first run to find the longest contiguous zero words for (word = 0; word < 8; word++) { if (parts[word] === 0) { if (word - lastzero > 1) { len = 0; } lastzero = word; len++; } if (len > longest) { longest = len; zstart = word - longest + 1; } } for (word = 0; word < 8; word++) { if (longest > 1) { // compress contiguous zeros - to produce "::" if (parts[word] === 0 && word >= zstart && word < (zstart + longest) ) { if (word === zstart) { str += ":"; if (zstart === 0) str += ":"; //leading zeros case } continue; } } // converts 16-bit words from big-endian to little-endian before converting to hex string str += Number(_ntohs(parts[word] & 0xffff)).toString(16); str += word < 7 ? ":" : ""; } return str; }, _inet_ntop6__deps: ['__setErrNo', '$ERRNO_CODES', '_inet_ntop6_raw'], _inet_ntop6: function(src, dst, size) { var addr = [ {{{ makeGetValue('src', '0', 'i32') }}}, {{{ makeGetValue('src', '4', 'i32') }}}, {{{ makeGetValue('src', '8', 'i32') }}}, {{{ makeGetValue('src', '12', 'i32') }}} ]; var str = __inet_ntop6_raw(addr); if (str.length+1 > size) { ___setErrNo(ERRNO_CODES.ENOSPC); return 0; } writeStringToMemory(str, dst); return dst; }, inet_ntop__deps: ['__setErrNo', '$ERRNO_CODES', '_inet_ntop4', '_inet_ntop6'], inet_ntop: function(af, src, dst, size) { // http://pubs.opengroup.org/onlinepubs/9699919799/functions/inet_ntop.html switch (af) { case {{{ cDefine('AF_INET') }}}: return __inet_ntop4(src, dst, size); case {{{ cDefine('AF_INET6') }}}: return __inet_ntop6(src, dst, size); default: ___setErrNo(ERRNO_CODES.EAFNOSUPPORT); return 0; } }, _inet_pton4_raw: function(str) { var b = str.split('.'); for (var i = 0; i < 4; i++) { var tmp = Number(b[i]); if (isNaN(tmp)) return null; b[i] = tmp; } return (b[0] | (b[1] << 8) | (b[2] << 16) | (b[3] << 24)) >>> 0; }, _inet_pton4__deps: ['_inet_pton4_raw'], _inet_pton4: function(src, dst) { var ret = __inet_pton4_raw(Pointer_stringify(src)); if (ret === null) { return 0; } {{{ makeSetValue('dst', '0', 'ret', 'i32') }}}; return 1; }, _inet_pton6_raw__deps: ['htons'], _inet_pton6_raw: function(str) { var words; var w, offset, z, i; /* http://home.deds.nl/~aeron/regex/ */ var valid6regx = /^((?=.*::)(?!.*::.+::)(::)?([\dA-F]{1,4}:(:|\b)|){5}|([\dA-F]{1,4}:){6})((([\dA-F]{1,4}((?!\3)::|:\b|$))|(?!\2\3)){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i var parts = []; if (!valid6regx.test(str)) { return null; } if (str === "::") { return [0, 0, 0, 0, 0, 0, 0, 0]; } // Z placeholder to keep track of zeros when splitting the string on ":" if (str.indexOf("::") === 0) { str = str.replace("::", "Z:"); // leading zeros case } else { str = str.replace("::", ":Z:"); } if (str.indexOf(".") > 0) { // parse IPv4 embedded stress str = str.replace(new RegExp('[.]', 'g'), ":"); words = str.split(":"); words[words.length-4] = parseInt(words[words.length-4]) + parseInt(words[words.length-3])*256; words[words.length-3] = parseInt(words[words.length-2]) + parseInt(words[words.length-1])*256; words = words.slice(0, words.length-2); } else { words = str.split(":"); } offset = 0; z = 0; for (w=0; w < words.length; w++) { if (typeof words[w] === 'string') { if (words[w] === 'Z') { // compressed zeros - write appropriate number of zero words for (z = 0; z < (8 - words.length+1); z++) { parts[w+z] = 0; } offset = z-1; } else { // parse hex to field to 16-bit value and write it in network byte-order parts[w+offset] = _htons(parseInt(words[w],16)); } } else { // parsed IPv4 words parts[w+offset] = words[w]; } } return [ (parts[1] << 16) | parts[0], (parts[3] << 16) | parts[2], (parts[5] << 16) | parts[4], (parts[7] << 16) | parts[6] ]; }, _inet_pton6__deps: ['_inet_pton6_raw'], _inet_pton6: function(src, dst) { var ints = __inet_pton6_raw(Pointer_stringify(src)); if (ints === null) { return 0; } for (var i = 0; i < 4; i++) { {{{ makeSetValue('dst', 'i*4', 'ints[i]', 'i32') }}}; } return 1; }, inet_pton__deps: ['__setErrNo', '$ERRNO_CODES', '_inet_pton4', '_inet_pton6'], inet_pton: function(af, src, dst) { // http://pubs.opengroup.org/onlinepubs/9699919799/functions/inet_pton.html switch (af) { case {{{ cDefine('AF_INET') }}}: return __inet_pton4(src, dst); case {{{ cDefine('AF_INET6') }}}: return __inet_pton6(src, dst); default: ___setErrNo(ERRNO_CODES.EAFNOSUPPORT); return -1; } }, // ========================================================================== // net/if.h // ========================================================================== if_nametoindex: function(a) { return 0; }, if_indextoname: function(a, b) { return 0; }, if_nameindex: function() { return 0; }, if_freenameindex: function(a) { }, // ========================================================================== // netinet/in.h // ========================================================================== in6addr_any: 'allocate([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], "i8", ALLOC_STATIC)', in6addr_loopback: 'allocate([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1], "i8", ALLOC_STATIC)', // ========================================================================== // netdb.h // ========================================================================== __h_errno_state: 'allocate(1, "i32", ALLOC_STATIC)', __h_errno_location__deps: ['__h_errno_state'], __h_errno_location: function() { return ___h_errno_state; }, // We can't actually resolve hostnames in the browser, so instead // we're generating fake IP addresses with lookup_name that we can // resolve later on with lookup_addr. // We do the aliasing in 172.29.*.*, giving us 65536 possibilities. $DNS__deps: ['_inet_pton4_raw', '_inet_pton6_raw'], $DNS: { address_map: { id: 1, addrs: {}, names: {} }, lookup_name: function (name) { // If the name is already a valid ipv4 / ipv6 address, don't generate a fake one. var res = __inet_pton4_raw(name); if (res) { return name; } res = __inet_pton6_raw(name); if (res) { return name; } // See if this name is already mapped. var addr; if (DNS.address_map.addrs[name]) { addr = DNS.address_map.addrs[name]; } else { var id = DNS.address_map.id++; assert(id < 65535, 'exceeded max address mappings of 65535'); addr = '172.29.' + (id & 0xff) + '.' + (id & 0xff00); DNS.address_map.names[addr] = name; DNS.address_map.addrs[name] = addr; } return addr; }, lookup_addr: function (addr) { if (DNS.address_map.names[addr]) { return DNS.address_map.names[addr]; } return null; } }, // note: lots of leaking here! gethostbyaddr__deps: ['$DNS', 'gethostbyname', '_inet_ntop4_raw'], gethostbyaddr: function (addr, addrlen, type) { if (type !== {{{ cDefine('AF_INET') }}}) { ___setErrNo(ERRNO_CODES.EAFNOSUPPORT); // TODO: set h_errno return null; } addr = {{{ makeGetValue('addr', '0', 'i32') }}}; // addr is in_addr var host = __inet_ntop4_raw(addr); var lookup = DNS.lookup_addr(host); if (lookup) { host = lookup; } var hostp = allocate(intArrayFromString(host), 'i8', ALLOC_STACK); return _gethostbyname(hostp); }, gethostbyname__deps: ['$DNS', '_inet_pton4_raw', 'malloc'], gethostbyname: function(name) { name = Pointer_stringify(name); // generate hostent var ret = _malloc({{{ C_STRUCTS.hostent.__size__ }}}); // XXX possibly leaked, as are others here var nameBuf = _malloc(name.length+1); writeStringToMemory(name, nameBuf); {{{ makeSetValue('ret', C_STRUCTS.hostent.h_name, 'nameBuf', 'i8*') }}}; var aliasesBuf = _malloc(4); {{{ makeSetValue('aliasesBuf', '0', '0', 'i8*') }}}; {{{ makeSetValue('ret', C_STRUCTS.hostent.h_aliases, 'aliasesBuf', 'i8**') }}}; var afinet = {{{ cDefine('AF_INET') }}}; {{{ makeSetValue('ret', C_STRUCTS.hostent.h_addrtype, 'afinet', 'i32') }}}; {{{ makeSetValue('ret', C_STRUCTS.hostent.h_length, '4', 'i32') }}}; var addrListBuf = _malloc(12); {{{ makeSetValue('addrListBuf', '0', 'addrListBuf+8', 'i32*') }}}; {{{ makeSetValue('addrListBuf', '4', '0', 'i32*') }}}; {{{ makeSetValue('addrListBuf', '8', '__inet_pton4_raw(DNS.lookup_name(name))', 'i32') }}}; {{{ makeSetValue('ret', C_STRUCTS.hostent.h_addr_list, 'addrListBuf', 'i8**') }}}; return ret; }, gethostbyname_r__deps: ['gethostbyname'], gethostbyname_r: function(name, ret, buf, buflen, out, err) { var data = _gethostbyname(name); _memcpy(ret, data, {{{ C_STRUCTS.hostent.__size__ }}}); _free(data); {{{ makeSetValue('err', '0', '0', 'i32') }}}; {{{ makeSetValue('out', '0', 'ret', '*') }}}; return 0; }, getaddrinfo__deps: ['$Sockets', '$DNS', '_inet_pton4_raw', '_inet_ntop4_raw', '_inet_pton6_raw', '_inet_ntop6_raw', '_write_sockaddr', 'htonl', 'malloc'], getaddrinfo: function(node, service, hint, out) { // Note getaddrinfo currently only returns a single addrinfo with ai_next defaulting to NULL. When NULL // hints are specified or ai_family set to AF_UNSPEC or ai_socktype or ai_protocol set to 0 then we // really should provide a linked list of suitable addrinfo values. var addrs = []; var canon = null; var addr = 0; var port = 0; var flags = 0; var family = {{{ cDefine('AF_UNSPEC') }}}; var type = 0; var proto = 0; var ai, last; function allocaddrinfo(family, type, proto, canon, addr, port) { var sa, salen, ai; var res; salen = family === {{{ cDefine('AF_INET6') }}} ? {{{ C_STRUCTS.sockaddr_in6.__size__ }}} : {{{ C_STRUCTS.sockaddr_in.__size__ }}}; addr = family === {{{ cDefine('AF_INET6') }}} ? __inet_ntop6_raw(addr) : __inet_ntop4_raw(addr); sa = _malloc(salen); res = __write_sockaddr(sa, family, addr, port); assert(!res.errno); ai = _malloc({{{ C_STRUCTS.addrinfo.__size__ }}}); {{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_family, 'family', 'i32') }}}; {{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_socktype, 'type', 'i32') }}}; {{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_protocol, 'proto', 'i32') }}}; if (canon) { {{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_canonname, 'canon', 'i32') }}}; } {{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_addr, 'sa', '*') }}}; if (family === {{{ cDefine('AF_INET6') }}}) { {{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_addrlen, C_STRUCTS.sockaddr_in6.__size__, 'i32') }}}; } else { {{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_addrlen, C_STRUCTS.sockaddr_in.__size__, 'i32') }}}; } {{{ makeSetValue('ai', C_STRUCTS.addrinfo.ai_next, '0', 'i32') }}}; return ai; } if (hint) { flags = {{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_flags, 'i32') }}}; family = {{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_family, 'i32') }}}; type = {{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_socktype, 'i32') }}}; proto = {{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_protocol, 'i32') }}}; } if (type && !proto) { proto = type === {{{ cDefine('SOCK_DGRAM') }}} ? {{{ cDefine('IPPROTO_UDP') }}} : {{{ cDefine('IPPROTO_TCP') }}}; } if (!type && proto) { type = proto === {{{ cDefine('IPPROTO_UDP') }}} ? {{{ cDefine('SOCK_DGRAM') }}} : {{{ cDefine('SOCK_STREAM') }}}; } // If type or proto are set to zero in hints we should really be returning multiple addrinfo values, but for // now default to a TCP STREAM socket so we can at least return a sensible addrinfo given NULL hints. if (proto === 0) { proto = {{{ cDefine('IPPROTO_TCP') }}}; } if (type === 0) { type = {{{ cDefine('SOCK_STREAM') }}}; } if (!node && !service) { return {{{ cDefine('EAI_NONAME') }}}; } if (flags & ~({{{ cDefine('AI_PASSIVE') }}}|{{{ cDefine('AI_CANONNAME') }}}|{{{ cDefine('AI_NUMERICHOST') }}}| {{{ cDefine('AI_NUMERICSERV') }}}|{{{ cDefine('AI_V4MAPPED') }}}|{{{ cDefine('AI_ALL') }}}|{{{ cDefine('AI_ADDRCONFIG') }}})) { return {{{ cDefine('EAI_BADFLAGS') }}}; } if (hint !== 0 && ({{{ makeGetValue('hint', C_STRUCTS.addrinfo.ai_flags, 'i32') }}} & {{{ cDefine('AI_CANONNAME') }}}) && !node) { return {{{ cDefine('EAI_BADFLAGS') }}}; } if (flags & {{{ cDefine('AI_ADDRCONFIG') }}}) { // TODO return {{{ cDefine('EAI_NONAME') }}}; } if (type !== 0 && type !== {{{ cDefine('SOCK_STREAM') }}} && type !== {{{ cDefine('SOCK_DGRAM') }}}) { return {{{ cDefine('EAI_SOCKTYPE') }}}; } if (family !== {{{ cDefine('AF_UNSPEC') }}} && family !== {{{ cDefine('AF_INET') }}} && family !== {{{ cDefine('AF_INET6') }}}) { return {{{ cDefine('EAI_FAMILY') }}}; } if (service) { service = Pointer_stringify(service); port = parseInt(service, 10); if (isNaN(port)) { if (flags & {{{ cDefine('AI_NUMERICSERV') }}}) { return {{{ cDefine('EAI_NONAME') }}}; } // TODO support resolving well-known service names from: // http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt return {{{ cDefine('EAI_SERVICE') }}}; } } if (!node) { if (family === {{{ cDefine('AF_UNSPEC') }}}) { family = {{{ cDefine('AF_INET') }}}; } if ((flags & {{{ cDefine('AI_PASSIVE') }}}) === 0) { if (family === {{{ cDefine('AF_INET') }}}) { addr = _htonl({{{ cDefine('INADDR_LOOPBACK') }}}); } else { addr = [0, 0, 0, 1]; } } ai = allocaddrinfo(family, type, proto, null, addr, port); {{{ makeSetValue('out', '0', 'ai', '*') }}}; return 0; } // // try as a numeric address // node = Pointer_stringify(node); addr = __inet_pton4_raw(node); if (addr !== null) { // incoming node is a valid ipv4 address if (family === {{{ cDefine('AF_UNSPEC') }}} || family === {{{ cDefine('AF_INET') }}}) { family = {{{ cDefine('AF_INET') }}}; } else if (family === {{{ cDefine('AF_INET6') }}} && (flags & {{{ cDefine('AI_V4MAPPED') }}})) { addr = [0, 0, _htonl(0xffff), addr]; family = {{{ cDefine('AF_INET6') }}}; } else { return {{{ cDefine('EAI_NONAME') }}}; } } else { addr = __inet_pton6_raw(node); if (addr !== null) { // incoming node is a valid ipv6 address if (family === {{{ cDefine('AF_UNSPEC') }}} || family === {{{ cDefine('AF_INET6') }}}) { family = {{{ cDefine('AF_INET6') }}}; } else { return {{{ cDefine('EAI_NONAME') }}}; } } } if (addr != null) { ai = allocaddrinfo(family, type, proto, node, addr, port); {{{ makeSetValue('out', '0', 'ai', '*') }}}; return 0; } if (flags & {{{ cDefine('AI_NUMERICHOST') }}}) { return {{{ cDefine('EAI_NONAME') }}}; } // // try as a hostname // // resolve the hostname to a temporary fake address node = DNS.lookup_name(node); addr = __inet_pton4_raw(node); if (family === {{{ cDefine('AF_UNSPEC') }}}) { family = {{{ cDefine('AF_INET') }}}; } else if (family === {{{ cDefine('AF_INET6') }}}) { addr = [0, 0, _htonl(0xffff), addr]; } ai = allocaddrinfo(family, type, proto, null, addr, port); {{{ makeSetValue('out', '0', 'ai', '*') }}}; return 0; }, freeaddrinfo__deps: ['$Sockets'], freeaddrinfo: function(ai) { var sa = {{{ makeGetValue('ai', C_STRUCTS.addrinfo.ai_addr, '*') }}}; _free(sa); _free(ai); }, getnameinfo__deps: ['$Sockets', '$DNS', '_read_sockaddr'], getnameinfo: function (sa, salen, node, nodelen, serv, servlen, flags) { var info = __read_sockaddr(sa, salen); if (info.errno) { return {{{ cDefine('EAI_FAMILY') }}}; } var port = info.port; var addr = info.addr; if (node && nodelen) { var lookup; if ((flags & {{{ cDefine('NI_NUMERICHOST') }}}) || !(lookup = DNS.lookup_addr(addr))) { if (flags & {{{ cDefine('NI_NAMEREQD') }}}) { return {{{ cDefine('EAI_NONAME') }}}; } } else { addr = lookup; } if (addr.length >= nodelen) { return {{{ cDefine('EAI_OVERFLOW') }}}; } writeStringToMemory(addr, node); } if (serv && servlen) { port = '' + port; if (port.length > servlen) { return {{{ cDefine('EAI_OVERFLOW') }}}; } writeStringToMemory(port, serv); } return 0; }, // Can't use a literal for $GAI_ERRNO_MESSAGES as was done for $ERRNO_MESSAGES as the keys (e.g. EAI_BADFLAGS) // are actually negative numbers and you can't have expressions as keys in JavaScript literals. $GAI_ERRNO_MESSAGES: {}, gai_strerror__deps: ['$GAI_ERRNO_MESSAGES', 'malloc'], gai_strerror: function(val) { var buflen = 256; // On first call to gai_strerror we initialise the buffer and populate the error messages. if (!_gai_strerror.buffer) { _gai_strerror.buffer = _malloc(buflen); GAI_ERRNO_MESSAGES['0'] = 'Success'; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_BADFLAGS') }}}] = 'Invalid value for \'ai_flags\' field'; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_NONAME') }}}] = 'NAME or SERVICE is unknown'; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_AGAIN') }}}] = 'Temporary failure in name resolution'; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_FAIL') }}}] = 'Non-recoverable failure in name res'; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_FAMILY') }}}] = '\'ai_family\' not supported'; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_SOCKTYPE') }}}] = '\'ai_socktype\' not supported'; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_SERVICE') }}}] = 'SERVICE not supported for \'ai_socktype\''; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_MEMORY') }}}] = 'Memory allocation failure'; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_SYSTEM') }}}] = 'System error returned in \'errno\''; GAI_ERRNO_MESSAGES['' + {{{ cDefine('EAI_OVERFLOW') }}}] = 'Argument buffer overflow'; } var msg = 'Unknown error'; if (val in GAI_ERRNO_MESSAGES) { if (GAI_ERRNO_MESSAGES[val].length > buflen - 1) { msg = 'Message too long'; // EMSGSIZE message. This should never occur given the GAI_ERRNO_MESSAGES above. } else { msg = GAI_ERRNO_MESSAGES[val]; } } writeAsciiToMemory(msg, _gai_strerror.buffer); return _gai_strerror.buffer; }, // Implement netdb.h protocol entry (getprotoent, getprotobyname, getprotobynumber, setprotoent, endprotoent) // http://pubs.opengroup.org/onlinepubs/9699919799/functions/getprotobyname.html // The Protocols object holds our 'fake' protocols 'database'. $Protocols: { list: [], map: {} }, setprotoent__deps: ['$Protocols', 'malloc'], setprotoent: function(stayopen) { // void setprotoent(int stayopen); // Allocate and populate a protoent structure given a name, protocol number and array of aliases function allocprotoent(name, proto, aliases) { // write name into buffer var nameBuf = _malloc(name.length + 1); writeAsciiToMemory(name, nameBuf); // write aliases into buffer var j = 0; var length = aliases.length; var aliasListBuf = _malloc((length + 1) * 4); // Use length + 1 so we have space for the terminating NULL ptr. for (var i = 0; i < length; i++, j += 4) { var alias = aliases[i]; var aliasBuf = _malloc(alias.length + 1); writeAsciiToMemory(alias, aliasBuf); {{{ makeSetValue('aliasListBuf', 'j', 'aliasBuf', 'i8*') }}}; } {{{ makeSetValue('aliasListBuf', 'j', '0', 'i8*') }}}; // Terminating NULL pointer. // generate protoent var pe = _malloc({{{ C_STRUCTS.protoent.__size__ }}}); {{{ makeSetValue('pe', C_STRUCTS.protoent.p_name, 'nameBuf', 'i8*') }}}; {{{ makeSetValue('pe', C_STRUCTS.protoent.p_aliases, 'aliasListBuf', 'i8**') }}}; {{{ makeSetValue('pe', C_STRUCTS.protoent.p_proto, 'proto', 'i32') }}}; return pe; }; // Populate the protocol 'database'. The entries are limited to tcp and udp, though it is fairly trivial // to add extra entries from /etc/protocols if desired - though not sure if that'd actually be useful. var list = Protocols.list; var map = Protocols.map; if (list.length === 0) { var entry = allocprotoent('tcp', 6, ['TCP']); list.push(entry); map['tcp'] = map['6'] = entry; entry = allocprotoent('udp', 17, ['UDP']); list.push(entry); map['udp'] = map['17'] = entry; } _setprotoent.index = 0; }, endprotoent: function() { // void endprotoent(void); // We're not using a real protocol database so we don't do a real close. }, getprotoent__deps: ['setprotoent', '$Protocols'], getprotoent: function(number) { // struct protoent *getprotoent(void); // reads the next entry from the protocols 'database' or return NULL if 'eof' if (_setprotoent.index === Protocols.list.length) { return 0; } else { var result = Protocols.list[_setprotoent.index++]; return result; } }, getprotobyname__deps: ['setprotoent', '$Protocols'], getprotobyname: function(name) { // struct protoent *getprotobyname(const char *); name = Pointer_stringify(name); _setprotoent(true); var result = Protocols.map[name]; return result; }, getprotobynumber__deps: ['setprotoent', '$Protocols'], getprotobynumber: function(number) { // struct protoent *getprotobynumber(int proto); _setprotoent(true); var result = Protocols.map[number]; return result; }, // ========================================================================== // sockets. Note that the implementation assumes all sockets are always // nonblocking // ========================================================================== #if SOCKET_WEBRTC $Sockets__deps: ['__setErrNo', '$ERRNO_CODES', function() { return 'var SocketIO = ' + read('socket.io.js') + ';\n' }, function() { return 'var Peer = ' + read('wrtcp.js') + ';\n' }], #else $Sockets__deps: ['__setErrNo', '$ERRNO_CODES'], #endif $Sockets: { BUFFER_SIZE: 10*1024, // initial size MAX_BUFFER_SIZE: 10*1024*1024, // maximum size we will grow the buffer nextFd: 1, fds: {}, nextport: 1, maxport: 65535, peer: null, connections: {}, portmap: {}, localAddr: 0xfe00000a, // Local address is always 10.0.0.254 addrPool: [ 0x0200000a, 0x0300000a, 0x0400000a, 0x0500000a, 0x0600000a, 0x0700000a, 0x0800000a, 0x0900000a, 0x0a00000a, 0x0b00000a, 0x0c00000a, 0x0d00000a, 0x0e00000a] /* 0x0100000a is reserved */ }, #if SOCKET_WEBRTC /* WebRTC sockets supports several options on the Module object. * Module['host']: true if this peer is hosting, false otherwise * Module['webrtc']['broker']: hostname for the p2p broker that this peer should use * Module['webrtc']['session']: p2p session for that this peer will join, or undefined if this peer is hosting * Module['webrtc']['hostOptions']: options to pass into p2p library if this peer is hosting * Module['webrtc']['onpeer']: function(peer, route), invoked when this peer is ready to connect * Module['webrtc']['onconnect']: function(peer), invoked when a new peer connection is ready * Module['webrtc']['ondisconnect']: function(peer), invoked when an existing connection is closed * Module['webrtc']['onerror']: function(error), invoked when an error occurs */ socket__deps: ['$FS', '$Sockets'], socket: function(family, type, protocol) { var INCOMING_QUEUE_LENGTH = 64; var info = FS.createStream({ addr: null, port: null, inQueue: new CircularBuffer(INCOMING_QUEUE_LENGTH), header: new Uint16Array(2), bound: false, socket: true, stream_ops: {} }); assert(info.fd < 64); // select() assumes socket fd values are in 0..63 var stream = type == {{{ cDefine('SOCK_STREAM') }}}; if (protocol) { assert(stream == (protocol == {{{ cDefine('IPPROTO_TCP') }}})); // if stream, must be tcp } // Open the peer connection if we don't have it already if (null == Sockets.peer) { var host = Module['host']; var broker = Module['webrtc']['broker']; var session = Module['webrtc']['session']; var peer = new Peer(broker); var listenOptions = Module['webrtc']['hostOptions'] || {}; peer.onconnection = function peer_onconnection(connection) { console.log('connected'); var addr; /* If this peer is connecting to the host, assign 10.0.0.1 to the host so it can be reached at a known address. */ // Assign 10.0.0.1 to the host if (session && session === connection['route']) { addr = 0x0100000a; // 10.0.0.1 } else { addr = Sockets.addrPool.shift(); } connection['addr'] = addr; Sockets.connections[addr] = connection; connection.ondisconnect = function connection_ondisconnect() { console.log('disconnect'); // Don't return the host address (10.0.0.1) to the pool if (!(session && session === Sockets.connections[addr]['route'])) { Sockets.addrPool.push(addr); } delete Sockets.connections[addr]; if (Module['webrtc']['ondisconnect'] && 'function' === typeof Module['webrtc']['ondisconnect']) { Module['webrtc']['ondisconnect'](peer); } }; connection.onerror = function connection_onerror(error) { if (Module['webrtc']['onerror'] && 'function' === typeof Module['webrtc']['onerror']) { Module['webrtc']['onerror'](error); } }; connection.onmessage = function connection_onmessage(label, message) { if ('unreliable' === label) { handleMessage(addr, message.data); } } if (Module['webrtc']['onconnect'] && 'function' === typeof Module['webrtc']['onconnect']) { Module['webrtc']['onconnect'](peer); } }; peer.onpending = function peer_onpending(pending) { console.log('pending from: ', pending['route'], '; initiated by: ', (pending['incoming']) ? 'remote' : 'local'); }; peer.onerror = function peer_onerror(error) { console.error(error); }; peer.onroute = function peer_onroute(route) { if (Module['webrtc']['onpeer'] && 'function' === typeof Module['webrtc']['onpeer']) { Module['webrtc']['onpeer'](peer, route); } }; function handleMessage(addr, message) { #if SOCKET_DEBUG Module.print("received " + message.byteLength + " raw bytes"); #endif var header = new Uint16Array(message, 0, 2); if (Sockets.portmap[header[1]]) { Sockets.portmap[header[1]].inQueue.push([addr, message]); } else { console.log("unable to deliver message: ", addr, header[1], message); } } window.onbeforeunload = function window_onbeforeunload() { var ids = Object.keys(Sockets.connections); ids.forEach(function(id) { Sockets.connections[id].close(); }); } Sockets.peer = peer; } function CircularBuffer(max_length) { var buffer = new Array(++ max_length); var head = 0; var tail = 0; var length = 0; return { push: function(element) { buffer[tail ++] = element; length = Math.min(++ length, max_length - 1); tail = tail % max_length; if (tail === head) { head = (head + 1) % max_length; } }, shift: function(element) { if (length < 1) return undefined; var element = buffer[head]; -- length; head = (head + 1) % max_length; return element; }, length: function() { return length; } }; }; return info.fd; }, mkport__deps: ['$Sockets'], mkport: function() { for(var i = 0; i < Sockets.maxport; ++ i) { var port = Sockets.nextport ++; Sockets.nextport = (Sockets.nextport > Sockets.maxport) ? 1 : Sockets.nextport; if (!Sockets.portmap[port]) { return port; } } assert(false, 'all available ports are in use!'); }, connect: function() { // Stub: connection-oriented sockets are not supported yet. }, bind__deps: ['$FS', '$Sockets', '_inet_ntop4_raw', 'ntohs', 'mkport'], bind: function(fd, addr, addrlen) { var info = FS.getStream(fd); if (!info) return -1; if (addr) { info.port = _ntohs(getValue(addr + {{{ C_STRUCTS.sockaddr_in.sin_port }}}, 'i16')); // info.addr = getValue(addr + {{{ C_STRUCTS.sockaddr_in.sin_addr.s_addr }}}, 'i32'); } if (!info.port) { info.port = _mkport(); } info.addr = Sockets.localAddr; // 10.0.0.254 info.host = __inet_ntop4_raw(info.addr); info.close = function info_close() { Sockets.portmap[info.port] = undefined; } Sockets.portmap[info.port] = info; console.log("bind: ", info.host, info.port); info.bound = true; }, sendmsg__deps: ['$FS', '$Sockets', 'bind', '_inet_ntop4_raw', 'ntohs'], sendmsg: function(fd, msg, flags) { var info = FS.getStream(fd); if (!info) return -1; // if we are not connected, use the address info in the message if (!info.bound) { _bind(fd); } var name = {{{ makeGetValue('msg', C_STRUCTS.msghdr.msg_name, '*') }}}; assert(name, 'sendmsg on non-connected socket, and no name/address in the message'); var port = _ntohs(getValue(name + {{{ C_STRUCTS.sockaddr_in.sin_port }}}, 'i16')); var addr = getValue(name + {{{ C_STRUCTS.sockaddr_in.sin_addr.s_addr }}}, 'i32'); var connection = Sockets.connections[addr]; // var host = __inet_ntop4_raw(addr); if (!(connection && connection.connected)) { ___setErrNo(ERRNO_CODES.EWOULDBLOCK); return -1; } var iov = {{{ makeGetValue('msg', C_STRUCTS.msghdr.msg_iov, 'i8*') }}}; var num = {{{ makeGetValue('msg', C_STRUCTS.msghdr.msg_iovlen, 'i32') }}}; #if SOCKET_DEBUG Module.print('sendmsg vecs: ' + num); #endif var totalSize = 0; for (var i = 0; i < num; i++) { totalSize += {{{ makeGetValue('iov', '8*i + 4', 'i32') }}}; } var data = new Uint8Array(totalSize); var ret = 0; for (var i = 0; i < num; i++) { var currNum = {{{ makeGetValue('iov', '8*i + 4', 'i32') }}}; #if SOCKET_DEBUG Module.print('sendmsg curr size: ' + currNum); #endif if (!currNum) continue; var currBuf = {{{ makeGetValue('iov', '8*i', 'i8*') }}}; data.set(HEAPU8.subarray(currBuf, currBuf+currNum), ret); ret += currNum; } info.header[0] = info.port; // src port info.header[1] = port; // dst port #if SOCKET_DEBUG Module.print('sendmsg port: ' + info.header[0] + ' -> ' + info.header[1]); Module.print('sendmsg bytes: ' + data.length + ' | ' + Array.prototype.slice.call(data)); #endif var buffer = new Uint8Array(info.header.byteLength + data.byteLength); buffer.set(new Uint8Array(info.header.buffer)); buffer.set(data, info.header.byteLength); connection.send('unreliable', buffer.buffer); return ret; }, recvmsg__deps: ['$FS', '$Sockets', 'bind', '__setErrNo', '$ERRNO_CODES', 'htons'], recvmsg: function(fd, msg, flags) { var info = FS.getStream(fd); if (!info) return -1; // if we are not connected, use the address info in the message if (!info.port) { console.log('recvmsg on unbound socket'); assert(false, 'cannot receive on unbound socket'); } if (info.inQueue.length() == 0) { ___setErrNo(ERRNO_CODES.EWOULDBLOCK); return -1; } var entry = info.inQueue.shift(); var addr = entry[0]; var message = entry[1]; var header = new Uint16Array(message, 0, info.header.length); var buffer = new Uint8Array(message, info.header.byteLength); var bytes = buffer.length; #if SOCKET_DEBUG Module.print('recvmsg port: ' + header[1] + ' <- ' + header[0]); Module.print('recvmsg bytes: ' + bytes + ' | ' + Array.prototype.slice.call(buffer)); #endif // write source var name = {{{ makeGetValue('msg', C_STRUCTS.msghdr.msg_name, '*') }}}; {{{ makeSetValue('name', C_STRUCTS.sockaddr_in.sin_addr.s_addr, 'addr', 'i32') }}}; {{{ makeSetValue('name', C_STRUCTS.sockaddr_in.sin_port, '_htons(header[0])', 'i16') }}}; // write data var ret = bytes; var iov = {{{ makeGetValue('msg', C_STRUCTS.msghdr.msg_iov, 'i8*') }}}; var num = {{{ makeGetValue('msg', C_STRUCTS.msghdr.msg_iovlen, 'i32') }}}; var bufferPos = 0; for (var i = 0; i < num && bytes > 0; i++) { var currNum = {{{ makeGetValue('iov', '8*i + 4', 'i32') }}}; #if SOCKET_DEBUG Module.print('recvmsg loop ' + [i, num, bytes, currNum]); #endif if (!currNum) continue; currNum = Math.min(currNum, bytes); // XXX what should happen when we partially fill a buffer..? bytes -= currNum; var currBuf = {{{ makeGetValue('iov', '8*i', 'i8*') }}}; #if SOCKET_DEBUG Module.print('recvmsg call recv ' + currNum); #endif HEAPU8.set(buffer.subarray(bufferPos, bufferPos + currNum), currBuf); bufferPos += currNum; } return ret; }, shutdown__deps: ['$FS'], shutdown: function(fd, how) { var stream = FS.getStream(fd); if (!stream) return -1; stream.close(); FS.closeStream(stream); }, ioctl__deps: ['$FS'], ioctl: function(fd, request, varargs) { var info = FS.getStream(fd); if (!info) return -1; var bytes = 0; if (info.hasData()) { bytes = info.inQueue[0].length; } var dest = {{{ makeGetValue('varargs', '0', 'i32') }}}; {{{ makeSetValue('dest', '0', 'bytes', 'i32') }}}; return 0; }, setsockopt: function(d, level, optname, optval, optlen) { #if SOCKET_DEBUG console.log('ignoring setsockopt command'); #endif return 0; }, accept__deps: ['$FS'], accept: function(fd, addr, addrlen) { // TODO: webrtc queued incoming connections, etc. // For now, the model is that bind does a connect, and we "accept" that one connection, // which has host:port the same as ours. We also return the same socket fd. var info = FS.getStream(fd); if (!info) return -1; if (addr) { setValue(addr + {{{ C_STRUCTS.sockaddr_in.sin_addr.s_addr }}}, info.addr, 'i32'); setValue(addr + {{{ C_STRUCTS.sockaddr_in.sin_port }}}, info.port, 'i32'); setValue(addrlen, {{{ C_STRUCTS.sockaddr_in.__size__ }}}, 'i32'); } return fd; }, select__deps: ['$FS'], select: function(nfds, readfds, writefds, exceptfds, timeout) { // readfds are supported, // writefds checks socket open status // exceptfds not supported // timeout is always 0 - fully async assert(!exceptfds); var errorCondition = 0; function canRead(info) { return info.inQueue.length() > 0; } function canWrite(info) { return true; } function checkfds(nfds, fds, can) { if (!fds) return 0; var bitsSet = 0; var dstLow = 0; var dstHigh = 0; var srcLow = {{{ makeGetValue('fds', 0, 'i32') }}}; var srcHigh = {{{ makeGetValue('fds', 4, 'i32') }}}; nfds = Math.min(64, nfds); // fd sets have 64 bits for (var fd = 0; fd < nfds; fd++) { var mask = 1 << (fd % 32), int_ = fd < 32 ? srcLow : srcHigh; if (int_ & mask) { // index is in the set, check if it is ready for read var info = FS.getStream(fd); if (info && can(info)) { // set bit fd < 32 ? (dstLow = dstLow | mask) : (dstHigh = dstHigh | mask); bitsSet++; } } } {{{ makeSetValue('fds', 0, 'dstLow', 'i32') }}}; {{{ makeSetValue('fds', 4, 'dstHigh', 'i32') }}}; return bitsSet; } var totalHandles = checkfds(nfds, readfds, canRead) + checkfds(nfds, writefds, canWrite); if (errorCondition) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } else { return totalHandles; } }, #else // ========================================================================== // socket.h // ========================================================================== _read_sockaddr__deps: ['$Sockets', '_inet_ntop4_raw', '_inet_ntop6_raw'], _read_sockaddr: function (sa, salen) { // family / port offsets are common to both sockaddr_in and sockaddr_in6 var family = {{{ makeGetValue('sa', C_STRUCTS.sockaddr_in.sin_family, 'i16') }}}; var port = _ntohs({{{ makeGetValue('sa', C_STRUCTS.sockaddr_in.sin_port, 'i16') }}}); var addr; switch (family) { case {{{ cDefine('AF_INET') }}}: if (salen !== {{{ C_STRUCTS.sockaddr_in.__size__ }}}) { return { errno: ERRNO_CODES.EINVAL }; } addr = {{{ makeGetValue('sa', C_STRUCTS.sockaddr_in.sin_addr.s_addr, 'i32') }}}; addr = __inet_ntop4_raw(addr); break; case {{{ cDefine('AF_INET6') }}}: if (salen !== {{{ C_STRUCTS.sockaddr_in6.__size__ }}}) { return { errno: ERRNO_CODES.EINVAL }; } addr = [ {{{ makeGetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+0, 'i32') }}}, {{{ makeGetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+4, 'i32') }}}, {{{ makeGetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+8, 'i32') }}}, {{{ makeGetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+12, 'i32') }}} ]; addr = __inet_ntop6_raw(addr); break; default: return { errno: ERRNO_CODES.EAFNOSUPPORT }; } return { family: family, addr: addr, port: port }; }, _write_sockaddr__deps: ['$Sockets', '_inet_pton4_raw', '_inet_pton6_raw'], _write_sockaddr: function (sa, family, addr, port) { switch (family) { case {{{ cDefine('AF_INET') }}}: addr = __inet_pton4_raw(addr); {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in.sin_family, 'family', 'i16') }}}; {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in.sin_addr.s_addr, 'addr', 'i32') }}}; {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in.sin_port, '_htons(port)', 'i16') }}}; break; case {{{ cDefine('AF_INET6') }}}: addr = __inet_pton6_raw(addr); {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_family, 'family', 'i32') }}}; {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+0, 'addr[0]', 'i32') }}}; {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+4, 'addr[1]', 'i32') }}}; {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+8, 'addr[2]', 'i32') }}}; {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_addr.__in6_union.__s6_addr+12, 'addr[3]', 'i32') }}}; {{{ makeSetValue('sa', C_STRUCTS.sockaddr_in6.sin6_port, '_htons(port)', 'i16') }}}; break; default: return { errno: ERRNO_CODES.EAFNOSUPPORT }; } // kind of lame, but let's match _read_sockaddr's interface return {}; }, socket__deps: ['$FS', '$SOCKFS'], socket: function(family, type, protocol) { var sock = SOCKFS.createSocket(family, type, protocol); assert(sock.stream.fd < 64); // select() assumes socket fd values are in 0..63 return sock.stream.fd; }, socketpair__deps: ['$ERRNO_CODES', '__setErrNo'], socketpair: function(domain, type, protocol, sv) { // int socketpair(int domain, int type, int protocol, int sv[2]); // http://pubs.opengroup.org/onlinepubs/009695399/functions/socketpair.html ___setErrNo(ERRNO_CODES.EOPNOTSUPP); return -1; }, shutdown__deps: ['$SOCKFS', '$ERRNO_CODES', '__setErrNo'], shutdown: function(fd, how) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } _close(fd); }, bind__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_read_sockaddr'], bind: function(fd, addrp, addrlen) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } var info = __read_sockaddr(addrp, addrlen); if (info.errno) { ___setErrNo(info.errno); return -1; } var port = info.port; var addr = DNS.lookup_addr(info.addr) || info.addr; try { sock.sock_ops.bind(sock, addr, port); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, connect__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_read_sockaddr'], connect: function(fd, addrp, addrlen) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } var info = __read_sockaddr(addrp, addrlen); if (info.errno) { ___setErrNo(info.errno); return -1; } var port = info.port; var addr = DNS.lookup_addr(info.addr) || info.addr; try { sock.sock_ops.connect(sock, addr, port); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, listen__deps: ['$FS', '$SOCKFS', '$ERRNO_CODES', '__setErrNo'], listen: function(fd, backlog) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { sock.sock_ops.listen(sock, backlog); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, accept__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_write_sockaddr'], accept: function(fd, addr, addrlen) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { var newsock = sock.sock_ops.accept(sock); if (addr) { var res = __write_sockaddr(addr, newsock.family, DNS.lookup_name(newsock.daddr), newsock.dport); assert(!res.errno); } return newsock.stream.fd; } catch (e) { FS.handleFSError(e); return -1; } }, getsockname__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_write_sockaddr'], getsockname: function (fd, addr, addrlen) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { var info = sock.sock_ops.getname(sock); var res = __write_sockaddr(addr, sock.family, DNS.lookup_name(info.addr), info.port); assert(!res.errno); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, getpeername__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_write_sockaddr'], getpeername: function (fd, addr, addrlen) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } try { var info = sock.sock_ops.getname(sock, true); var res = __write_sockaddr(addr, sock.family, DNS.lookup_name(info.addr), info.port); assert(!res.errno); return 0; } catch (e) { FS.handleFSError(e); return -1; } }, send__deps: ['$SOCKFS', '$ERRNO_CODES', '__setErrNo', 'write'], send: function(fd, buf, len, flags) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } // TODO honor flags return _write(fd, buf, len); }, recv__deps: ['$SOCKFS', '$ERRNO_CODES', '__setErrNo', 'read'], recv: function(fd, buf, len, flags) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } // TODO honor flags return _read(fd, buf, len); }, sendto__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_read_sockaddr'], sendto: function(fd, message, length, flags, dest_addr, dest_len) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } // read the address and port to send to var info = __read_sockaddr(dest_addr, dest_len); if (info.errno) { ___setErrNo(info.errno); return -1; } var port = info.port; var addr = DNS.lookup_addr(info.addr) || info.addr; // send the message try { var slab = {{{ makeGetSlabs('message', 'i8', true) }}}; return sock.sock_ops.sendmsg(sock, slab, message, length, addr, port); } catch (e) { FS.handleFSError(e); return -1; } }, recvfrom__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_write_sockaddr'], recvfrom: function(fd, buf, len, flags, addr, addrlen) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } // read from the socket var msg; try { msg = sock.sock_ops.recvmsg(sock, len); } catch (e) { FS.handleFSError(e); return -1; } if (!msg) { // socket is closed return 0; } // write the source address out if (addr) { var res = __write_sockaddr(addr, sock.family, DNS.lookup_name(msg.addr), msg.port); assert(!res.errno); } // write the buffer out HEAPU8.set(msg.buffer, buf); return msg.buffer.byteLength; }, sendmsg__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_read_sockaddr'], sendmsg: function(fd, message, flags) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } var iov = {{{ makeGetValue('message', C_STRUCTS.msghdr.msg_iov, '*') }}}; var num = {{{ makeGetValue('message', C_STRUCTS.msghdr.msg_iovlen, 'i32') }}}; // read the address and port to send to var addr; var port; var name = {{{ makeGetValue('message', C_STRUCTS.msghdr.msg_name, '*') }}}; var namelen = {{{ makeGetValue('message', C_STRUCTS.msghdr.msg_namelen, 'i32') }}}; if (name) { var info = __read_sockaddr(name, namelen); if (info.errno) { ___setErrNo(info.errno); return -1; } port = info.port; addr = DNS.lookup_addr(info.addr) || info.addr; } // concatenate scatter-gather arrays into one message buffer var total = 0; for (var i = 0; i < num; i++) { total += {{{ makeGetValue('iov', '(' + C_STRUCTS.iovec.__size__ + ' * i) + ' + C_STRUCTS.iovec.iov_len, 'i32') }}}; } var view = new Uint8Array(total); var offset = 0; for (var i = 0; i < num; i++) { var iovbase = {{{ makeGetValue('iov', '(' + C_STRUCTS.iovec.__size__ + ' * i) + ' + C_STRUCTS.iovec.iov_base, 'i8*') }}}; var iovlen = {{{ makeGetValue('iov', '(' + C_STRUCTS.iovec.__size__ + ' * i) + ' + C_STRUCTS.iovec.iov_len, 'i32') }}}; for (var j = 0; j < iovlen; j++) { view[offset++] = {{{ makeGetValue('iovbase', 'j', 'i8') }}}; } } // write the buffer try { return sock.sock_ops.sendmsg(sock, view, 0, total, addr, port); } catch (e) { FS.handleFSError(e); return -1; } }, recvmsg__deps: ['$FS', '$SOCKFS', '$DNS', '$ERRNO_CODES', '__setErrNo', '_write_sockaddr'], recvmsg: function(fd, message, flags) { var sock = SOCKFS.getSocket(fd); if (!sock) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } var iov = {{{ makeGetValue('message', C_STRUCTS.msghdr.msg_iov, 'i8*') }}}; var num = {{{ makeGetValue('message', C_STRUCTS.msghdr.msg_iovlen, 'i32') }}}; // get the total amount of data we can read across all arrays var total = 0; for (var i = 0; i < num; i++) { total += {{{ makeGetValue('iov', '(' + C_STRUCTS.iovec.__size__ + ' * i) + ' + C_STRUCTS.iovec.iov_len, 'i32') }}}; } // try to read total data var msg; try { msg = sock.sock_ops.recvmsg(sock, total); } catch (e) { FS.handleFSError(e); return -1; } if (!msg) { // socket is closed return 0; } // TODO honor flags: // MSG_OOB // Requests out-of-band data. The significance and semantics of out-of-band data are protocol-specific. // MSG_PEEK // Peeks at the incoming message. // MSG_WAITALL // Requests that the function block until the full amount of data requested can be returned. The function may return a smaller amount of data if a signal is caught, if the connection is terminated, if MSG_PEEK was specified, or if an error is pending for the socket. // write the source address out var name = {{{ makeGetValue('message', C_STRUCTS.msghdr.msg_name, '*') }}}; if (name) { var res = __write_sockaddr(name, sock.family, DNS.lookup_name(msg.addr), msg.port); assert(!res.errno); } // write the buffer out to the scatter-gather arrays var bytesRead = 0; var bytesRemaining = msg.buffer.byteLength; for (var i = 0; bytesRemaining > 0 && i < num; i++) { var iovbase = {{{ makeGetValue('iov', '(' + C_STRUCTS.iovec.__size__ + ' * i) + ' + C_STRUCTS.iovec.iov_base, 'i8*') }}}; var iovlen = {{{ makeGetValue('iov', '(' + C_STRUCTS.iovec.__size__ + ' * i) + ' + C_STRUCTS.iovec.iov_len, 'i32') }}}; if (!iovlen) { continue; } var length = Math.min(iovlen, bytesRemaining); var buf = msg.buffer.subarray(bytesRead, bytesRead + length); HEAPU8.set(buf, iovbase + bytesRead); bytesRead += length; bytesRemaining -= length; } // TODO set msghdr.msg_flags // MSG_EOR // End of record was received (if supported by the protocol). // MSG_OOB // Out-of-band data was received. // MSG_TRUNC // Normal data was truncated. // MSG_CTRUNC return bytesRead; }, setsockopt: function(fd, level, optname, optval, optlen) { #if SOCKET_DEBUG console.log('ignoring setsockopt command'); #endif return 0; }, mkport: function() { throw 'TODO' }, // ========================================================================== // select.h // ========================================================================== select__deps: ['$FS', '__DEFAULT_POLLMASK'], select: function(nfds, readfds, writefds, exceptfds, timeout) { // readfds are supported, // writefds checks socket open status // exceptfds not supported // timeout is always 0 - fully async assert(nfds <= 64, 'nfds must be less than or equal to 64'); // fd sets have 64 bits assert(!exceptfds, 'exceptfds not supported'); var total = 0; var srcReadLow = (readfds ? {{{ makeGetValue('readfds', 0, 'i32') }}} : 0), srcReadHigh = (readfds ? {{{ makeGetValue('readfds', 4, 'i32') }}} : 0); var srcWriteLow = (writefds ? {{{ makeGetValue('writefds', 0, 'i32') }}} : 0), srcWriteHigh = (writefds ? {{{ makeGetValue('writefds', 4, 'i32') }}} : 0); var srcExceptLow = (exceptfds ? {{{ makeGetValue('exceptfds', 0, 'i32') }}} : 0), srcExceptHigh = (exceptfds ? {{{ makeGetValue('exceptfds', 4, 'i32') }}} : 0); var dstReadLow = 0, dstReadHigh = 0; var dstWriteLow = 0, dstWriteHigh = 0; var dstExceptLow = 0, dstExceptHigh = 0; var allLow = (readfds ? {{{ makeGetValue('readfds', 0, 'i32') }}} : 0) | (writefds ? {{{ makeGetValue('writefds', 0, 'i32') }}} : 0) | (exceptfds ? {{{ makeGetValue('exceptfds', 0, 'i32') }}} : 0); var allHigh = (readfds ? {{{ makeGetValue('readfds', 4, 'i32') }}} : 0) | (writefds ? {{{ makeGetValue('writefds', 4, 'i32') }}} : 0) | (exceptfds ? {{{ makeGetValue('exceptfds', 4, 'i32') }}} : 0); function get(fd, low, high, val) { return (fd < 32 ? (low & val) : (high & val)); } for (var fd = 0; fd < nfds; fd++) { var mask = 1 << (fd % 32); if (!(get(fd, allLow, allHigh, mask))) { continue; // index isn't in the set } var stream = FS.getStream(fd); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } var flags = ___DEFAULT_POLLMASK; if (stream.stream_ops.poll) { flags = stream.stream_ops.poll(stream); } if ((flags & {{{ cDefine('POLLIN') }}}) && get(fd, srcReadLow, srcReadHigh, mask)) { fd < 32 ? (dstReadLow = dstReadLow | mask) : (dstReadHigh = dstReadHigh | mask); total++; } if ((flags & {{{ cDefine('POLLOUT') }}}) && get(fd, srcWriteLow, srcWriteHigh, mask)) { fd < 32 ? (dstWriteLow = dstWriteLow | mask) : (dstWriteHigh = dstWriteHigh | mask); total++; } if ((flags & {{{ cDefine('POLLPRI') }}}) && get(fd, srcExceptLow, srcExceptHigh, mask)) { fd < 32 ? (dstExceptLow = dstExceptLow | mask) : (dstExceptHigh = dstExceptHigh | mask); total++; } } if (readfds) { {{{ makeSetValue('readfds', '0', 'dstReadLow', 'i32') }}}; {{{ makeSetValue('readfds', '4', 'dstReadHigh', 'i32') }}}; } if (writefds) { {{{ makeSetValue('writefds', '0', 'dstWriteLow', 'i32') }}}; {{{ makeSetValue('writefds', '4', 'dstWriteHigh', 'i32') }}}; } if (exceptfds) { {{{ makeSetValue('exceptfds', '0', 'dstExceptLow', 'i32') }}}; {{{ makeSetValue('exceptfds', '4', 'dstExceptHigh', 'i32') }}}; } return total; }, // ========================================================================== // sys/ioctl.h // ========================================================================== ioctl__deps: ['$FS'], ioctl: function(fd, request, varargs) { var stream = FS.getStream(fd); if (!stream) { ___setErrNo(ERRNO_CODES.EBADF); return -1; } var arg = {{{ makeGetValue('varargs', '0', 'i32') }}}; try { return FS.ioctl(stream, request, arg); } catch (e) { FS.handleFSError(e); return -1; } }, #endif // pty.h openpty: function() { throw 'openpty: TODO' }, forkpty: function() { throw 'forkpty: TODO' }, // grp.h initgroups: function() { throw 'initgroups: TODO' }, // pwd.h getpwnam: function() { throw 'getpwnam: TODO' }, setpwent: function() { throw 'setpwent: TODO' }, getpwent: function() { throw 'getpwent: TODO' }, endpwent: function() { throw 'endpwent: TODO' }, // ========================================================================== // emscripten.h // ========================================================================== emscripten_run_script: function(ptr) { eval(Pointer_stringify(ptr)); }, emscripten_run_script_int: function(ptr) { return eval(Pointer_stringify(ptr))|0; }, emscripten_run_script_string: function(ptr) { var s = eval(Pointer_stringify(ptr)) + ''; var me = _emscripten_run_script_string; if (!me.bufferSize || me.bufferSize < s.length+1) { if (me.bufferSize) _free(me.buffer); me.bufferSize = s.length+1; me.buffer = _malloc(me.bufferSize); } writeStringToMemory(s, me.buffer); return me.buffer; }, emscripten_random: function() { return Math.random(); }, emscripten_jcache_printf___deps: ['_formatString'], emscripten_jcache_printf_: function(varargs) { var MAX = 10240; if (!_emscripten_jcache_printf_.buffer) { _emscripten_jcache_printf_.buffer = _malloc(MAX); } var i = 0; do { var curr = {{{ makeGetValue('varargs', '0', 'i8') }}}; varargs += {{{ STACK_ALIGN }}}; {{{ makeSetValue('_emscripten_jcache_printf_.buffer', 'i', 'curr', 'i8') }}}; i++; assert(i*{{{ STACK_ALIGN }}} < MAX); } while (curr != 0); Module.print(intArrayToString(__formatString(_emscripten_jcache_printf_.buffer, varargs)).replace('\\n', '')); Runtime.stackAlloc(-4*i); // free up the stack space we know is ok to free }, emscripten_asm_const: function(code) { Runtime.getAsmConst(code, 0)(); }, emscripten_asm_const_int__jsargs: true, emscripten_asm_const_int: function(code) { var args = Array.prototype.slice.call(arguments, 1); return Runtime.getAsmConst(code, args.length).apply(null, args) | 0; }, emscripten_asm_const_double__jsargs: true, emscripten_asm_const_double: function(code) { var args = Array.prototype.slice.call(arguments, 1); return +Runtime.getAsmConst(code, args.length).apply(null, args); }, emscripten_get_now: function() { if (!_emscripten_get_now.actual) { if (ENVIRONMENT_IS_NODE) { _emscripten_get_now.actual = function _emscripten_get_now_actual() { var t = process['hrtime'](); return t[0] * 1e3 + t[1] / 1e6; } } else if (typeof dateNow !== 'undefined') { _emscripten_get_now.actual = dateNow; } else if (ENVIRONMENT_IS_WEB && window['performance'] && window['performance']['now']) { _emscripten_get_now.actual = function _emscripten_get_now_actual() { return window['performance']['now'](); }; } else { _emscripten_get_now.actual = Date.now; } } return _emscripten_get_now.actual(); }, emscripten_get_now_res: function() { // return resolution of get_now, in nanoseconds if (ENVIRONMENT_IS_NODE) { return 1; // nanoseconds } else if (typeof dateNow !== 'undefined' || (ENVIRONMENT_IS_WEB && window['performance'] && window['performance']['now'])) { return 1000; // microseconds (1/1000 of a millisecond) } else { return 1000*1000; // milliseconds } }, // Returns [parentFuncArguments, functionName, paramListName] _emscripten_traverse_stack: function(args) { if (!args || !args.callee || !args.callee.name) { return [null, '', '']; } var funstr = args.callee.toString(); var funcname = args.callee.name; var str = '('; var first = true; for(i in args) { var a = args[i]; if (!first) { str += ", "; } first = false; if (typeof a === 'number' || typeof a === 'string') { str += a; } else { str += '(' + typeof a + ')'; } } str += ')'; var caller = args.callee.caller; args = caller ? caller.arguments : []; if (first) str = ''; return [args, funcname, str]; }, emscripten_get_callstack_js__deps: ['_emscripten_traverse_stack'], emscripten_get_callstack_js: function(flags) { var err = new Error(); if (!err.stack) { // IE10+ special cases: It does have callstack info, but it is only populated if an Error object is thrown, // so try that as a special-case. try { throw new Error(0); } catch(e) { err = e; } if (!err.stack) { Runtime.warnOnce('emscripten_get_callstack_js is not supported on this browser!'); return ''; } } var callstack = err.stack.toString(); // Find the symbols in the callstack that corresponds to the functions that report callstack information, and remove everyhing up to these from the output. var iThisFunc = callstack.lastIndexOf('_emscripten_log'); var iThisFunc2 = callstack.lastIndexOf('_emscripten_get_callstack'); var iNextLine = callstack.indexOf('\n', Math.max(iThisFunc, iThisFunc2))+1; callstack = callstack.slice(iNextLine); // If user requested to see the original source stack, but no source map information is available, just fall back to showing the JS stack. if (flags & 8/*EM_LOG_C_STACK*/ && typeof emscripten_source_map === 'undefined') { Runtime.warnOnce('Source map information is not available, emscripten_log with EM_LOG_C_STACK will be ignored. Build with "--pre-js $EMSCRIPTEN/src/emscripten-source-map.min.js" linker flag to add source map loading to code.'); flags ^= 8/*EM_LOG_C_STACK*/; flags |= 16/*EM_LOG_JS_STACK*/; } var stack_args = null; if (flags & 128 /*EM_LOG_FUNC_PARAMS*/) { // To get the actual parameters to the functions, traverse the stack via the unfortunately deprecated 'arguments.callee' method, if it works: var stack_args = __emscripten_traverse_stack(arguments); while (stack_args[1].indexOf('_emscripten_') >= 0) stack_args = __emscripten_traverse_stack(stack_args[0]); } // Process all lines: lines = callstack.split('\n'); callstack = ''; var newFirefoxRe = new RegExp('\\s*(.*?)@(.*?):([0-9]+):([0-9]+)'); // New FF30 with column info: extract components of form ' Object._main@http://server.com:4324:12' var firefoxRe = new RegExp('\\s*(.*?)@(.*):(.*)(:(.*))?'); // Old FF without column info: extract components of form ' Object._main@http://server.com:4324' var chromeRe = new RegExp('\\s*at (.*?) \\\((.*):(.*):(.*)\\\)'); // Extract components of form ' at Object._main (http://server.com/file.html:4324:12)' for(l in lines) { var line = lines[l]; var jsSymbolName = ''; var file = ''; var lineno = 0; var column = 0; var parts = chromeRe.exec(line); if (parts && parts.length == 5) { jsSymbolName = parts[1]; file = parts[2]; lineno = parts[3]; column = parts[4]; } else { parts = newFirefoxRe.exec(line); if (!parts) parts = firefoxRe.exec(line); if (parts && parts.length >= 4) { jsSymbolName = parts[1]; file = parts[2]; lineno = parts[3]; column = parts[4]|0; // Old Firefox doesn't carry column information, but in new FF30, it is present. See https://bugzilla.mozilla.org/show_bug.cgi?id=762556 } else { // Was not able to extract this line for demangling/sourcemapping purposes. Output it as-is. callstack += line + '\n'; continue; } } // Try to demangle the symbol, but fall back to showing the original JS symbol name if not available. var cSymbolName = (flags & 32/*EM_LOG_DEMANGLE*/) ? demangle(jsSymbolName) : jsSymbolName; if (!cSymbolName) { cSymbolName = jsSymbolName; } var haveSourceMap = false; if (flags & 8/*EM_LOG_C_STACK*/) { var orig = emscripten_source_map.originalPositionFor({line: lineno, column: column}); haveSourceMap = (orig && orig.source); if (haveSourceMap) { if (flags & 64/*EM_LOG_NO_PATHS*/) { orig.source = orig.source.substring(orig.source.replace(/\\/g, "/").lastIndexOf('/')+1); } callstack += ' at ' + cSymbolName + ' (' + orig.source + ':' + orig.line + ':' + orig.column + ')\n'; } } if ((flags & 16/*EM_LOG_JS_STACK*/) || !haveSourceMap) { if (flags & 64/*EM_LOG_NO_PATHS*/) { file = file.substring(file.replace(/\\/g, "/").lastIndexOf('/')+1); } callstack += (haveSourceMap ? (' = '+jsSymbolName) : (' at '+cSymbolName)) + ' (' + file + ':' + lineno + ':' + column + ')\n'; } // If we are still keeping track with the callstack by traversing via 'arguments.callee', print the function parameters as well. if (flags & 128 /*EM_LOG_FUNC_PARAMS*/ && stack_args[0]) { if (stack_args[1] == jsSymbolName && stack_args[2].length > 0) { callstack = callstack.replace(/\s+$/, ''); callstack += ' with values: ' + stack_args[1] + stack_args[2] + '\n'; } stack_args = __emscripten_traverse_stack(stack_args[0]); } } // Trim extra whitespace at the end of the output. callstack = callstack.replace(/\s+$/, ''); return callstack; }, emscripten_get_callstack__deps: ['emscripten_get_callstack_js'], emscripten_get_callstack: function(flags, str, maxbytes) { var callstack = _emscripten_get_callstack_js(flags); // User can query the required amount of bytes to hold the callstack. if (!str || maxbytes <= 0) { return callstack.length+1; } // Truncate output to avoid writing past bounds. if (callstack.length > maxbytes-1) { callstack = callstack.slice(0, maxbytes-1); } // Output callstack string as C string to HEAP. writeStringToMemory(callstack, str, false); // Return number of bytes written. return callstack.length+1; }, emscripten_log_js__deps: ['emscripten_get_callstack_js'], emscripten_log_js: function(flags, str) { if (flags & 24/*EM_LOG_C_STACK | EM_LOG_JS_STACK*/) { str = str.replace(/\s+$/, ''); // Ensure the message and the callstack are joined cleanly with exactly one newline. str += (str.length > 0 ? '\n' : '') + _emscripten_get_callstack_js(flags); } if (flags & 1 /*EM_LOG_CONSOLE*/) { if (flags & 4 /*EM_LOG_ERROR*/) { console.error(str); } else if (flags & 2 /*EM_LOG_WARN*/) { console.warn(str); } else { console.log(str); } } else if (flags & 6 /*EM_LOG_ERROR|EM_LOG_WARN*/) { Module.printErr(str); } else { Module.print(str); } }, emscripten_log__deps: ['_formatString', 'emscripten_log_js'], emscripten_log: function(flags, varargs) { // Extract the (optionally-existing) printf format specifier field from varargs. var format = {{{ makeGetValue('varargs', '0', 'i32', undefined, undefined, true) }}}; varargs += Math.max(Runtime.getNativeFieldSize('i32'), Runtime.getAlignSize('i32', null, true)); var str = ''; if (format) { var result = __formatString(format, varargs); for(var i = 0 ; i < result.length; ++i) { str += String.fromCharCode(result[i]); } } _emscripten_log_js(flags, str); }, emscripten_get_compiler_setting: function(name) { name = Pointer_stringify(name); var ret = Runtime.getCompilerSetting(name); if (typeof ret === 'number') return ret; if (!_emscripten_get_compiler_setting.cache) _emscripten_get_compiler_setting.cache = {}; var cache = _emscripten_get_compiler_setting.cache; var fullname = name + '__str'; var fullret = cache[fullname]; if (fullret) return fullret; return cache[fullname] = allocate(intArrayFromString(ret + ''), 'i8', ALLOC_NORMAL); }, #if ASM_JS #if ALLOW_MEMORY_GROWTH emscripten_replace_memory__asm: true, // this is used inside the asm module emscripten_replace_memory__sig: 'viiiiiiii', // bogus emscripten_replace_memory: function(_HEAP8, _HEAP16, _HEAP32, _HEAPU8, _HEAPU16, _HEAPU32, _HEAPF32, _HEAPF64) { _HEAP8 = _HEAP8; // fake asm coercions _HEAP16 = _HEAP16; _HEAP32 = _HEAP32; _HEAPU8 = _HEAPU8; _HEAPU16 = _HEAPU16; _HEAPU32 = _HEAPU32; _HEAPF32 = _HEAPF32; _HEAPF64 = _HEAPF64; HEAP8 = _HEAP8; // replace the memory views HEAP16 = _HEAP16; HEAP32 = _HEAP32; HEAPU8 = _HEAPU8; HEAPU16 = _HEAPU16; HEAPU32 = _HEAPU32; HEAPF32 = _HEAPF32; HEAPF64 = _HEAPF64; }, // this function is inside the asm block, but prevents validation as asm.js // the codebase still benefits from being in the general asm.js shape, // but should not declare itself as validating (which is prevented in ASM_JS == 2). {{{ (assert(ASM_JS === 2), DEFAULT_LIBRARY_FUNCS_TO_INCLUDE.push('emscripten_replace_memory'), '') }}} #endif #endif emscripten_debugger: function() { debugger; }, //============================ // emscripten vector ops //============================ emscripten_float32x4_signmask__inline: function(a) { return 'SIMD.float32x4.bitsToInt32x4(' + a + ').signMask'; }, emscripten_float32x4_min__inline: function(a, b) { return 'SIMD.float32x4.min(' + a + ', ' + b + ')'; }, emscripten_float32x4_max__inline: function(a, b) { return 'SIMD.float32x4.max(' + a + ', ' + b + ')'; }, emscripten_float32x4_sqrt__inline: function(a) { return 'SIMD.float32x4.sqrt(' + a + ')'; }, emscripten_float32x4_lessThan__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.float32x4.lessThan(' + a + ', ' + b + '))'; }, emscripten_float32x4_lessThanOrEqual__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.float32x4.lessThanOrEqual(' + a + ', ' + b + '))'; }, emscripten_float32x4_equal__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.float32x4.equal(' + a + ', ' + b + '))'; }, emscripten_float32x4_greaterThanOrEqual__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.float32x4.greaterThanOrEqual(' + a + ', ' + b + '))'; }, emscripten_float32x4_greaterThan__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.float32x4.greaterThan(' + a + ', ' + b + '))'; }, emscripten_float32x4_and__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.int32x4.and(SIMD.float32x4.bitsToInt32x4(' + a + '), SIMD.float32x4.bitsToInt32x4(' + b + ')))'; }, emscripten_float32x4_andNot__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.int32x4.and(SIMD.int32x4.not(SIMD.float32x4.bitsToInt32x4(' + a + ')), SIMD.float32x4.bitsToInt32x4(' + b + ')))'; }, emscripten_float32x4_or__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.int32x4.or(SIMD.float32x4.bitsToInt32x4(' + a + '), SIMD.float32x4.bitsToInt32x4(' + b + ')))'; }, emscripten_float32x4_xor__inline: function(a, b) { return 'SIMD.int32x4.bitsToFloat32x4(SIMD.int32x4.xor(SIMD.float32x4.bitsToInt32x4(' + a + '), SIMD.float32x4.bitsToInt32x4(' + b + ')))'; }, emscripten_int32x4_bitsToFloat32x4__inline: function(a) { return 'SIMD.int32x4.bitsToFloat32x4(' + a + ')'; }, emscripten_int32x4_toFloat32x4__inline: function(a) { return 'SIMD.int32x4.toFloat32x4(' + a + ')'; }, emscripten_float32x4_bitsToInt32x4__inline: function(a) { return 'SIMD.float32x4.bitsToInt32x4(' + a + ')'; }, emscripten_float32x4_toInt32x4__inline: function(a) { return 'SIMD.float32x4.toInt32x4(' + a + ')'; }, //============================ // i64 math //============================ i64Add__asm: true, i64Add__sig: 'iiiii', i64Add: function(a, b, c, d) { /* x = a + b*2^32 y = c + d*2^32 result = l + h*2^32 */ a = a|0; b = b|0; c = c|0; d = d|0; var l = 0, h = 0; l = (a + c)>>>0; h = (b + d + (((l>>>0) < (a>>>0))|0))>>>0; // Add carry from low word to high word on overflow. {{{ makeStructuralReturn(['l|0', 'h'], true) }}}; }, llvm_uadd_with_overflow_i64__asm: true, llvm_uadd_with_overflow_i64__sig: 'iiiii', llvm_uadd_with_overflow_i64: function(a, b, c, d) { a = a|0; b = b|0; c = c|0; d = d|0; var l = 0, h = 0, overflow = 0; l = (a + c)>>>0; h = (b + d)>>>0; overflow = ((h>>>0) < (b>>>0))|0; // Return whether addition overflowed even the high word. if ((l>>>0) < (a>>>0)) { h = (h + 1)>>>0; // Add carry from low word to high word on overflow. overflow = overflow | (!h); // Check again for overflow. } {{{ makeStructuralReturn(['l|0', 'h', 'overflow'], true) }}}; }, i64Subtract__asm: true, i64Subtract__sig: 'iiiii', i64Subtract: function(a, b, c, d) { a = a|0; b = b|0; c = c|0; d = d|0; var l = 0, h = 0; l = (a - c)>>>0; h = (b - d)>>>0; h = (b - d - (((c>>>0) > (a>>>0))|0))>>>0; // Borrow one from high word to low word on underflow. {{{ makeStructuralReturn(['l|0', 'h'], true) }}}; }, bitshift64Shl__asm: true, bitshift64Shl__sig: 'iiii', bitshift64Shl: function(low, high, bits) { low = low|0; high = high|0; bits = bits|0; var ander = 0; if ((bits|0) < 32) { ander = ((1 << bits) - 1)|0; tempRet0 = (high << bits) | ((low&(ander << (32 - bits))) >>> (32 - bits)); return low << bits; } tempRet0 = low << (bits - 32); return 0; }, bitshift64Ashr__asm: true, bitshift64Ashr__sig: 'iiii', bitshift64Ashr: function(low, high, bits) { low = low|0; high = high|0; bits = bits|0; var ander = 0; if ((bits|0) < 32) { ander = ((1 << bits) - 1)|0; tempRet0 = high >> bits; return (low >>> bits) | ((high&ander) << (32 - bits)); } tempRet0 = (high|0) < 0 ? -1 : 0; return (high >> (bits - 32))|0; }, bitshift64Lshr__asm: true, bitshift64Lshr__sig: 'iiii', bitshift64Lshr: function(low, high, bits) { low = low|0; high = high|0; bits = bits|0; var ander = 0; if ((bits|0) < 32) { ander = ((1 << bits) - 1)|0; tempRet0 = high >>> bits; return (low >>> bits) | ((high&ander) << (32 - bits)); } tempRet0 = 0; return (high >>> (bits - 32))|0; }, // misc shims for musl __lockfile: function() { return 1 }, __unlockfile: function(){}, // misc definitions to avoid unnecessary unresolved symbols from fastcomp emscripten_prep_setjmp: true, emscripten_check_longjmp: true, emscripten_get_longjmp_result: true, emscripten_setjmp: true, emscripten_preinvoke: true, emscripten_postinvoke: true, emscripten_resume: true, emscripten_landingpad: true, getHigh32: true, setHigh32: true, FtoILow: true, FtoIHigh: true, DtoILow: true, DtoIHigh: true, BDtoILow: true, BDtoIHigh: true, SItoF: true, UItoF: true, SItoD: true, UItoD: true, BItoD: true, llvm_dbg_value: true, }; function autoAddDeps(object, name) { name = [name]; for (var item in object) { if (item.substr(-6) != '__deps' && !object[item + '__deps']) { object[item + '__deps'] = name; } } } // Add aborting stubs for various libc stuff needed by libc++ ['pthread_cond_signal', 'pthread_equal', 'pthread_join', 'pthread_detach'].forEach(function(aborter) { LibraryManager.library[aborter] = function aborting_stub() { throw 'TODO: ' + aborter }; });