// === Auto-generated preamble library stuff === function __globalConstructor__() { } var __THREW__ = false; // Used in checking for thrown exceptions. var __ATEXIT__ = []; var HEAP = intArrayFromString('(null)'); // So printing %s of NULL gives '(null)' var HEAPTOP = HEAP.length+1; // Leave 0 as an invalid address, 'NULL' #if SAFE_HEAP // Semi-manual memory corruption debugging HEAP_WATCHED = {}; function SAFE_HEAP_STORE(dest, value) { if (dest in HEAP_WATCHED) { print((new Error()).stack); throw "Bad store!" + dest; } HEAP[dest] = value; } function __Z16PROTECT_HEAPADDRPv(dest) { HEAP_WATCHED[dest] = true; } function __Z18UNPROTECT_HEAPADDRPv(dest) { delete HEAP_WATCHED[dest]; } //========================================== #endif #if LABEL_DEBUG INDENT = ''; #endif #if EXECUTION_TIMEOUT START_TIME = Date.now(); #endif function abort(text) { text = "ABORT: " + text; print(text + "\n"); // print((new Error).stack); // for stack traces print("\n"); throw text; } function Pointer_niceify(ptr) { // XXX hardcoded ptr impl return { slab: HEAP, pos: ptr }; // if (!ptr.slab) // return { slab: ptr[0], pos: ptr[1] }; // else // return ptr; } function Pointer_make(slab, pos) { pos = pos ? pos : 0; // XXX hardcoded ptr impl if (slab === HEAP) return pos; // Flatten out - needed for global consts/vars function flatten(slab) { if (!slab || slab.length === undefined || typeof slab === 'function') return [slab]; return slab.map(flatten).reduce(function(a,b) { return a.concat(b) }, []); } var slab = flatten(slab); // Finalize var ret = _malloc(Math.max(slab.length - pos, 1)); for (var i = 0; i < slab.length - pos; i++) { #if SAFE_HEAP SAFE_HEAP_STORE(ret + i, slab[pos + i]); #else HEAP[ret + i] = slab[pos + i]; #endif } return ret; // return { slab: slab, pos: pos ? pos : 0 }; } function Pointer_stringify(ptr) { ptr = Pointer_niceify(ptr); var ret = ""; var i = 0; var t; while (1) { // if ((ptr.pos + i) >= ptr.slab.length) { return "<< Invalid read: " + (ptr.pos+i) + " : " + ptr.slab.length + " >>"; } else {} if ((ptr.pos+i) >= ptr.slab.length) { break; } else {} t = String.fromCharCode(ptr.slab[ptr.pos + i]); if (t == "\0") { break; } else {} ret = ret + t; i = i + 1; } return ret; } function _malloc(size) { // XXX hardcoded ptr impl var ret = HEAPTOP; HEAPTOP += size; return ret; // We don't actually do new Array(size) - memory is uninitialized anyhow // return Pointer_make([]); } // Mangled "new"s... need a heuristic for autogeneration... __Znwj = _malloc; // gcc __Znaj = _malloc; // gcc __Znam = _malloc; // clang __Znwm = _malloc; // clang function _free(ptr) { // XXX hardcoded ptr impl // XXX TODO - actual implementation! Currently we leak it all // Nothing needs to be done! But we mark the pointer // as invalid. Note that we should do it for all other // pointers of this slab too. // ptr.slab = null; // ptr[0] = null; } // Mangled "delete"s... need a heuristic for autogeneration... __ZdlPv = _free; // gcc __ZdaPv = _free; // gcc // stdio.h // C-style: we work on ints on the HEAP. function __formatString() { var textIndex = arguments[0]; var argIndex = 1; var ret = []; var curr = -1; while (curr != 0) { curr = HEAP[textIndex]; next = HEAP[textIndex+1]; if (curr == '%'.charCodeAt(0) && ['d', 'f'].indexOf(String.fromCharCode(next)) != -1) { String(arguments[argIndex]).split('').forEach(function(chr) { ret.push(chr.charCodeAt(0)); }); argIndex += 1; textIndex += 2; } else if (curr == '%'.charCodeAt(0) && next == 's'.charCodeAt(0)) { ret = ret.concat(String_copy(arguments[argIndex])); argIndex += 1; textIndex += 2; } else { ret.push(curr); textIndex ++; } } return Pointer_make(ret); } function _printf() { var text = Pointer_stringify(__formatString.apply(null, arguments)); // Our print() will print a \n anyhow... remove dupes if (text[text.length-1] == '\n') { text = text.substr(0, text.length-1); } print(text); } function _puts(p) { _printf(p); // print("\n"); // XXX print already always adds one } function _putchar(p) { print(String.fromCharCode(p)); } function _strlen(p) { // XXX hardcoded ptr impl var q = p; while (HEAP[q] != 0) q++; return q - p; // p = Pointer_niceify(p); // return p.slab.length; // XXX might want to find the null terminator... } // Copies a list of num items on the HEAP into a // a normal JavaScript array of numbers function Array_copy(ptr, num) { // XXX hardcoded ptr impl return HEAP.slice(ptr, ptr+num); } // Copies a C-style string, terminated by a zero, from the HEAP into // a normal JavaScript array of numbers function String_copy(ptr, addZero) { // XXX hardcoded ptr impl return Array_copy(ptr, _strlen(ptr)).concat(addZero ? [0] : []); } // stdlib.h // Get a pointer, return int value of the string it points to function _atoi(s) { return Math.floor(Number(Pointer_stringify(s))); } function _llvm_memcpy_i32(dest, src, num, idunno) { // XXX hardcoded ptr impl for (var i = 0; i < num; i++) { #if SAFE_HEAP SAFE_HEAP_STORE(dest + i, HEAP[src + i]); #else HEAP[dest + i] = HEAP[src + i]; #endif } // dest = Pointer_niceify(dest); // src = Pointer_niceify(src); // dest.slab = src.slab.slice(src.pos); } _llvm_memcpy_i64 = _llvm_memcpy_i32; // Tools // println((new Error).stack); // for stack traces function println(text) { print(text);// + "\n"); // XXX print already always adds one } function jrint(label, obj) { if (!obj) { obj = label; label = ''; } else label = label + ' : '; print(label + JSON.stringify(obj)); } // This processes a 'normal' string into a C-line array of numbers. // For LLVM-originating strings, see parser.js:parseLLVMString function function intArrayFromString(stringy) { var ret = []; var t; var i = 0; while (i < stringy.length) { ret.push(stringy.charCodeAt(i)); i = i + 1; } ret.push(0); return ret; } // === Body ===