| #!/usr/bin/env python2 |
| |
| import argparse |
| import os |
| import shutil |
| import tempfile |
| |
| import targets |
| from utils import FindBaseNaCl, GetObjcopyCmd, shellcmd |
| |
| |
| def Translate(ll_files, extra_args, obj, verbose): |
| """Translate a set of input bitcode files into a single object file. |
| |
| Use pnacl-llc to translate textual bitcode input ll_files into object file |
| obj, using extra_args as the architectural flags. |
| """ |
| shellcmd(['cat'] + ll_files + ['|', |
| 'pnacl-llc', |
| '-externalize', |
| '-function-sections', |
| '-O2', |
| '-filetype=obj', |
| '-bitcode-format=llvm', |
| '-arm-enable-dwarf-eh=1', |
| '-o', obj |
| ] + extra_args, echo=verbose) |
| shellcmd([GetObjcopyCmd(), |
| '--strip-symbol=nacl_tp_tdb_offset', |
| '--strip-symbol=nacl_tp_tls_offset', |
| obj |
| ], echo=verbose) |
| |
| |
| def PartialLink(obj_files, extra_args, lib, verbose): |
| """Partially links a set of obj files into a final obj library.""" |
| shellcmd(['le32-nacl-ld', |
| '-o', lib, |
| '-r', |
| ] + extra_args + obj_files, echo=verbose) |
| |
| |
| def MakeRuntimesForTarget(target_info, ll_files, |
| srcdir, tempdir, rtdir, verbose): |
| """Builds native, sandboxed, and nonsfi runtimes for the given target.""" |
| # File-mangling helper functions. |
| def TmpFile(template): |
| return template.format(dir=tempdir, target=target_info.target) |
| def OutFile(template): |
| return template.format(rtdir=rtdir, target=target_info.target) |
| # Helper function for building the native unsandboxed runtime. |
| def MakeNativeRuntime(): |
| """Builds just the native runtime.""" |
| # Translate tempdir/szrt.ll and tempdir/szrt_ll.ll to |
| # szrt_native_{target}.tmp.o. |
| Translate(ll_files, |
| ['-mtriple=' + target_info.triple] + target_info.llc_flags, |
| TmpFile('{dir}/szrt_native_{target}.tmp.o'), |
| verbose) |
| # Compile srcdir/szrt_profiler.c to |
| # tempdir/szrt_profiler_native_{target}.o. |
| shellcmd(['clang', |
| '-O2', |
| '-target=' + target_info.triple, |
| '-c', |
| '{srcdir}/szrt_profiler.c'.format(srcdir=srcdir), |
| '-o', TmpFile('{dir}/szrt_native_profiler_{target}.o') |
| ], echo=verbose) |
| # Assemble srcdir/szrt_asm_{target}.s to tempdir/szrt_asm_{target}.o. |
| shellcmd(['llvm-mc', |
| '-triple=' + target_info.triple, '--defsym NATIVE=1', |
| '-filetype=obj', |
| '-o', TmpFile('{dir}/szrt_native_asm_{target}.o'), |
| '{srcdir}/szrt_asm_{target}.s'.format( |
| srcdir=srcdir, target=target_info.target) |
| ], echo=verbose) |
| # Write full szrt_native_{target}.o. |
| PartialLink([TmpFile('{dir}/szrt_native_{target}.tmp.o'), |
| TmpFile('{dir}/szrt_native_asm_{target}.o'), |
| TmpFile('{dir}/szrt_native_profiler_{target}.o')], |
| ['-m {ld_emu}'.format(ld_emu=target_info.ld_emu)], |
| OutFile('{rtdir}/szrt_native_{target}.o'), |
| verbose) |
| shellcmd([GetObjcopyCmd(), |
| '--strip-symbol=NATIVE', |
| OutFile('{rtdir}/szrt_native_{target}.o')]) |
| |
| # Helper function for building the sandboxed runtime. |
| def MakeSandboxedRuntime(): |
| """Builds just the sandboxed runtime.""" |
| # Translate tempdir/szrt.ll and tempdir/szrt_ll.ll to szrt_sb_{target}.o. |
| # The sandboxed library does not get the profiler helper function as the |
| # binaries are linked with -nostdlib. |
| Translate(ll_files, |
| ['-mtriple=' + targets.ConvertTripleToNaCl(target_info.triple)] + |
| target_info.llc_flags, |
| TmpFile('{dir}/szrt_sb_{target}.tmp.o'), |
| verbose) |
| # Assemble srcdir/szrt_asm_{target}.s to tempdir/szrt_asm_{target}.o. |
| shellcmd(['llvm-mc', |
| '-triple=' + targets.ConvertTripleToNaCl(target_info.triple), |
| '--defsym NACL=1', |
| '-filetype=obj', |
| '-o', TmpFile('{dir}/szrt_sb_asm_{target}.o'), |
| '{srcdir}/szrt_asm_{target}.s'.format( |
| srcdir=srcdir, target=target_info.target) |
| ], echo=verbose) |
| PartialLink([TmpFile('{dir}/szrt_sb_{target}.tmp.o'), |
| TmpFile('{dir}/szrt_sb_asm_{target}.o')], |
| ['-m {ld_emu}'.format(ld_emu=target_info.sb_emu)], |
| OutFile('{rtdir}/szrt_sb_{target}.o'), |
| verbose) |
| shellcmd([GetObjcopyCmd(), |
| '--strip-symbol=NACL', |
| OutFile('{rtdir}/szrt_sb_{target}.o')]) |
| |
| # Helper function for building the Non-SFI runtime. |
| def MakeNonsfiRuntime(): |
| """Builds just the nonsfi runtime.""" |
| # Translate tempdir/szrt.ll and tempdir/szrt_ll.ll to |
| # szrt_nonsfi_{target}.tmp.o. |
| Translate(ll_files, |
| ['-mtriple=' + target_info.triple] + target_info.llc_flags + |
| ['-relocation-model=pic', '-force-tls-non-pic', '-malign-double'], |
| TmpFile('{dir}/szrt_nonsfi_{target}.tmp.o'), |
| verbose) |
| # Assemble srcdir/szrt_asm_{target}.s to tempdir/szrt_asm_{target}.o. |
| shellcmd(['llvm-mc', |
| '-triple=' + target_info.triple, '--defsym NONSFI=1', |
| '-filetype=obj', |
| '-o', TmpFile('{dir}/szrt_nonsfi_asm_{target}.o'), |
| '{srcdir}/szrt_asm_{target}.s'.format( |
| srcdir=srcdir, target=target_info.target) |
| ], echo=verbose) |
| # Write full szrt_nonsfi_{target}.o. |
| PartialLink([TmpFile('{dir}/szrt_nonsfi_{target}.tmp.o'), |
| TmpFile('{dir}/szrt_nonsfi_asm_{target}.o')], |
| ['-m {ld_emu}'.format(ld_emu=target_info.ld_emu)], |
| OutFile('{rtdir}/szrt_nonsfi_{target}.o'), |
| verbose) |
| shellcmd([GetObjcopyCmd(), |
| '--strip-symbol=NONSFI', |
| OutFile('{rtdir}/szrt_nonsfi_{target}.o')]) |
| |
| |
| # Run the helper functions. |
| MakeNativeRuntime() |
| MakeSandboxedRuntime() |
| MakeNonsfiRuntime() |
| |
| |
| def main(): |
| """Build the Subzero runtime support library for all architectures. |
| """ |
| nacl_root = FindBaseNaCl() |
| argparser = argparse.ArgumentParser( |
| description=' ' + main.__doc__, |
| formatter_class=argparse.RawTextHelpFormatter) |
| argparser.add_argument('--verbose', '-v', dest='verbose', |
| action='store_true', |
| help='Display some extra debugging output') |
| argparser.add_argument('--pnacl-root', dest='pnacl_root', |
| default=( |
| '{root}/toolchain/linux_x86/pnacl_newlib_raw' |
| ).format(root=nacl_root), |
| help='Path to PNaCl toolchain binaries.') |
| args = argparser.parse_args() |
| os.environ['PATH'] = ('{root}/bin{sep}{path}' |
| ).format(root=args.pnacl_root, sep=os.pathsep, path=os.environ['PATH']) |
| srcdir = ( |
| '{root}/toolchain_build/src/subzero/runtime' |
| ).format(root=nacl_root) |
| rtdir = ( |
| '{root}/toolchain_build/src/subzero/build/runtime' |
| ).format(root=nacl_root) |
| try: |
| tempdir = tempfile.mkdtemp() |
| if os.path.exists(rtdir) and not os.path.isdir(rtdir): |
| os.remove(rtdir) |
| if not os.path.exists(rtdir): |
| os.makedirs(rtdir) |
| # Compile srcdir/szrt.c to tempdir/szrt.ll |
| shellcmd(['pnacl-clang', |
| '-O2', |
| '-c', |
| '{srcdir}/szrt.c'.format(srcdir=srcdir), |
| '-o', '{dir}/szrt.tmp.bc'.format(dir=tempdir) |
| ], echo=args.verbose) |
| shellcmd(['pnacl-opt', |
| '-pnacl-abi-simplify-preopt', |
| '-pnacl-abi-simplify-postopt', |
| '-pnaclabi-allow-debug-metadata', |
| '{dir}/szrt.tmp.bc'.format(dir=tempdir), |
| '-S', |
| '-o', '{dir}/szrt.ll'.format(dir=tempdir) |
| ], echo=args.verbose) |
| ll_files = ['{dir}/szrt.ll'.format(dir=tempdir), |
| '{srcdir}/szrt_ll.ll'.format(srcdir=srcdir)] |
| |
| MakeRuntimesForTarget(targets.X8632Target, ll_files, |
| srcdir, tempdir, rtdir, args.verbose) |
| MakeRuntimesForTarget(targets.X8664Target, ll_files, |
| srcdir, tempdir, rtdir, args.verbose) |
| MakeRuntimesForTarget(targets.ARM32Target, ll_files, |
| srcdir, tempdir, rtdir, args.verbose) |
| |
| finally: |
| try: |
| shutil.rmtree(tempdir) |
| except OSError as exc: |
| if exc.errno != errno.ENOENT: # ENOENT - no such file or directory |
| raise # re-raise exception |
| |
| if __name__ == '__main__': |
| main() |