diff options
| -rwxr-xr-x | tools/exec_llvm.py | 7 | ||||
| -rw-r--r-- | tools/nativize_llvm.py | 31 |
2 files changed, 33 insertions, 5 deletions
diff --git a/tools/exec_llvm.py b/tools/exec_llvm.py index 1b1bba1b..5cf55e46 100755 --- a/tools/exec_llvm.py +++ b/tools/exec_llvm.py @@ -26,11 +26,8 @@ it runs python $(EMSCRIPTEN_TOOLS)/exec_llvm.py THE_FILE PARAMS An alternative solution to this problem is to compile -the .ll into native code. This can be done as follows: - - * Use llc to generate x86 asm - * Use as to generate an object file - * Use g++ to link it to an executable +the .ll into native code, see nativize_llvm.py. That is +useful when this fails. ''' import os, sys diff --git a/tools/nativize_llvm.py b/tools/nativize_llvm.py new file mode 100644 index 00000000..a053b56c --- /dev/null +++ b/tools/nativize_llvm.py @@ -0,0 +1,31 @@ +#!/usr/bin/python + +''' +Small utility to build some llvm bitcode into native code. Useful when lli (called +from exec_llvm) fails for some reason. + + * Use llc to generate x86 asm + * Use as to generate an object file + * Use g++ to link it to an executable +''' + +import os, sys +from subprocess import Popen, PIPE, STDOUT + +__rootpath__ = os.path.abspath(os.path.dirname(os.path.dirname(__file__))) +def path_from_root(*pathelems): + return os.path.join(__rootpath__, *pathelems) +exec(open(path_from_root('tools', 'shared.py'), 'r').read()) + +filename = sys.argv[1] +libs = sys.argv[2:] # e.g.: dl for dlopen/dlclose, util for openpty/forkpty + +print 'bc => clean bc' +Popen([LLVM_OPT, filename, '-strip-debug', '-o=' + filename + '.clean.bc']).communicate()[0] +print 'bc => s' +Popen([LLVM_COMPILER, filename + '.clean.bc', '-o=' + filename + '.s']).communicate()[0] +print 's => o' +Popen(['as', filename + '.s', '-o', filename + '.o']).communicate()[0] +print 'o => runnable' +Popen(['g++', filename + '.o', '-o', filename + '.run'] + ['-l' + lib for lib in libs]).communicate()[0] + |