| Karl Schimpf | a667fb8 | 2014-05-19 14:56:51 -0700 | [diff] [blame] | 1 | #!/usr/bin/env python2 |
| 2 | |
| 3 | import argparse |
| 4 | import itertools |
| 5 | import os |
| 6 | import re |
| 7 | import subprocess |
| 8 | import sys |
| 9 | |
| Karl Schimpf | a667fb8 | 2014-05-19 14:56:51 -0700 | [diff] [blame] | 10 | from utils import shellcmd |
| 11 | |
| 12 | if __name__ == '__main__': |
| 13 | desc = 'Run llvm2ice on llvm file to produce ICE instructions.' |
| 14 | argparser = argparse.ArgumentParser( |
| 15 | description=desc, |
| 16 | formatter_class=argparse.ArgumentDefaultsHelpFormatter, |
| 17 | epilog=''' |
| 18 | Runs in two modes, depending on whether the flag '--pnacl' is specified. |
| 19 | |
| 20 | If flag '--pnacl' is omitted, it runs llvm2ice to (directly) generate |
| 21 | the corresponding ICE instructions. |
| 22 | |
| 23 | If flag '--pnacl' is given, it first assembles and freezes the |
| 24 | llvm source file generating the corresponding PNaCl bitcode |
| 25 | file. The PNaCl bitcode file is then piped into llvm2ice to |
| 26 | generate the corresponding ICE instructions. |
| 27 | ''') |
| 28 | argparser.add_argument( |
| 29 | '--llvm2ice', required=False, default='./llvm2ice', metavar='LLVM2ICE', |
| 30 | help='Path to llvm2ice driver program') |
| 31 | argparser.add_argument('--llvm-bin-path', required=False, |
| 32 | default=None, metavar='LLVM_BIN_PATH', |
| 33 | help='Path to LLVM executables ' + |
| 34 | '(for building PNaCl files)') |
| 35 | argparser.add_argument('--pnacl', required=False, |
| 36 | action='store_true', |
| 37 | help='Convert llvm source to PNaCl bitcode ' + |
| 38 | 'file first') |
| 39 | argparser.add_argument('--echo-cmd', required=False, |
| 40 | action='store_true', |
| 41 | help='Trace command that generates ICE instructions') |
| 42 | argparser.add_argument('llfile', nargs=1, |
| 43 | metavar='LLVM_FILE', |
| 44 | help='Llvm source file') |
| 45 | |
| 46 | args = argparser.parse_args() |
| 47 | llvm_bin_path = args.llvm_bin_path |
| 48 | llfile = args.llfile[0] |
| 49 | |
| 50 | cmd = [] |
| 51 | if args.pnacl: |
| 52 | cmd = [os.path.join(llvm_bin_path, 'llvm-as'), llfile, '-o', '-', '|', |
| 53 | os.path.join(llvm_bin_path, 'pnacl-freeze'), |
| 54 | '--allow-local-symbol-tables', '|'] |
| 55 | cmd += [args.llvm2ice, '-verbose', 'inst', '-notranslate'] |
| 56 | if args.pnacl: |
| 57 | cmd += ['--allow-local-symbol-tables', '--bitcode-format=pnacl'] |
| 58 | else: |
| 59 | cmd.append(llfile) |
| 60 | |
| 61 | stdout_result = shellcmd(cmd, echo=args.echo_cmd) |
| 62 | if not args.echo_cmd: |
| 63 | sys.stdout.write(stdout_result) |
