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1 #!/usr/bin/python | 1 #!/usr/bin/python |
2 # Copyright (c) 2012 The Native Client Authors. All rights reserved. | 2 # Copyright (c) 2012 The Native Client Authors. All rights reserved. |
3 # Use of this source code is governed by a BSD-style license that can be | 3 # Use of this source code is governed by a BSD-style license that can be |
4 # found in the LICENSE file. | 4 # found in the LICENSE file. |
5 # | 5 # |
6 # IMPORTANT NOTE: If you make local mods to this file, you must run: | 6 # IMPORTANT NOTE: If you make local mods to this file, you must run: |
7 # % pnacl/build.sh driver | 7 # % pnacl/build.sh driver |
8 # in order for them to take effect in the scons build. This command | 8 # in order for them to take effect in the scons build. This command |
9 # updates the copy in the toolchain/ tree. | 9 # updates the copy in the toolchain/ tree. |
10 # | 10 # |
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89 | 89 |
90 'DEFAULTLIBS': '${ALLOW_CXX_EXCEPTIONS ? ' + | 90 'DEFAULTLIBS': '${ALLOW_CXX_EXCEPTIONS ? ' + |
91 '${LIBGCC_EH}} -l:libgcc.a ${MISC_LIBS}', | 91 '${LIBGCC_EH}} -l:libgcc.a ${MISC_LIBS}', |
92 | 92 |
93 'MISC_LIBS': | 93 'MISC_LIBS': |
94 # TODO(pdox): | 94 # TODO(pdox): |
95 # Move libcrt_platform into the __pnacl namespace, | 95 # Move libcrt_platform into the __pnacl namespace, |
96 # with stubs to access it from newlib. | 96 # with stubs to access it from newlib. |
97 '${LIBMODE_NEWLIB ? -l:libcrt_platform.a} ', | 97 '${LIBMODE_NEWLIB ? -l:libcrt_platform.a} ', |
98 | 98 |
99 # Determine whether or not to use bitcode metadata to generate .so stubs | |
100 # for the final link. | |
101 'USE_META': '0', | |
102 | |
103 'TRIPLE' : '${TRIPLE_%ARCH%}', | 99 'TRIPLE' : '${TRIPLE_%ARCH%}', |
104 'TRIPLE_ARM' : 'armv7a-none-nacl-gnueabi', | 100 'TRIPLE_ARM' : 'armv7a-none-nacl-gnueabi', |
105 'TRIPLE_X8632': 'i686-none-nacl-gnu', | 101 'TRIPLE_X8632': 'i686-none-nacl-gnu', |
106 'TRIPLE_X8664': 'x86_64-none-nacl-gnu', | 102 'TRIPLE_X8664': 'x86_64-none-nacl-gnu', |
107 'TRIPLE_MIPS32': 'mipsel-none-nacl-gnu', | 103 'TRIPLE_MIPS32': 'mipsel-none-nacl-gnu', |
108 | 104 |
109 'LLC_FLAGS_COMMON': '${PIC ? -relocation-model=pic} ' + | 105 'LLC_FLAGS_COMMON': '${PIC ? -relocation-model=pic} ' + |
110 # -force-tls-non-pic makes the code generator (llc) | 106 # -force-tls-non-pic makes the code generator (llc) |
111 # do the work that would otherwise be done by | 107 # do the work that would otherwise be done by |
112 # linker rewrites which are quite messy in the nacl | 108 # linker rewrites which are quite messy in the nacl |
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160 # do auto feature detection based on CPUID, but constrained by what is | 156 # do auto feature detection based on CPUID, but constrained by what is |
161 # accepted by NaCl validators. | 157 # accepted by NaCl validators. |
162 'LLC_MCPU' : '-mcpu=${LLC_MCPU_%ARCH%}', | 158 'LLC_MCPU' : '-mcpu=${LLC_MCPU_%ARCH%}', |
163 'LLC_MCPU_ARM' : 'cortex-a9', | 159 'LLC_MCPU_ARM' : 'cortex-a9', |
164 'LLC_MCPU_X8632' : 'pentium4', | 160 'LLC_MCPU_X8632' : 'pentium4', |
165 'LLC_MCPU_X8664' : 'core2', | 161 'LLC_MCPU_X8664' : 'core2', |
166 'LLC_MCPU_MIPS32' : 'mips32r2', | 162 'LLC_MCPU_MIPS32' : 'mips32r2', |
167 | 163 |
168 # Note: this is only used in the unsandboxed case | 164 # Note: this is only used in the unsandboxed case |
169 'RUN_LLC' : '${LLVM_LLC} ${LLC_FLAGS} ${LLC_MCPU} ' | 165 'RUN_LLC' : '${LLVM_LLC} ${LLC_FLAGS} ${LLC_MCPU} ' |
170 '${input} -o ${output} ' + | 166 '${input} -o ${output} ', |
171 '-metadata-text ${output}.meta', | |
172 # Rate in bits/sec to stream the bitcode from sel_universal over SRPC | 167 # Rate in bits/sec to stream the bitcode from sel_universal over SRPC |
173 # for testing. Defaults to 1Gbps (effectively unlimited). | 168 # for testing. Defaults to 1Gbps (effectively unlimited). |
174 'BITCODE_STREAM_RATE' : '1000000000', | 169 'BITCODE_STREAM_RATE' : '1000000000', |
175 } | 170 } |
176 | 171 |
177 | 172 |
178 TranslatorPatterns = [ | 173 TranslatorPatterns = [ |
179 ( '-o(.+)', "env.set('OUTPUT', pathtools.normalize($0))"), | 174 ( '-o(.+)', "env.set('OUTPUT', pathtools.normalize($0))"), |
180 ( ('-o', '(.+)'), "env.set('OUTPUT', pathtools.normalize($0))"), | 175 ( ('-o', '(.+)'), "env.set('OUTPUT', pathtools.normalize($0))"), |
181 | 176 |
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216 ( '--noirt', "env.set('USE_IRT', '0')\n" | 211 ( '--noirt', "env.set('USE_IRT', '0')\n" |
217 "env.append('LD_FLAGS', '--noirt')"), | 212 "env.append('LD_FLAGS', '--noirt')"), |
218 ( '--noirtshim', "env.set('USE_IRT_SHIM', '0')"), | 213 ( '--noirtshim', "env.set('USE_IRT_SHIM', '0')"), |
219 ( '--newlib-shared-experiment', "env.set('NEWLIB_SHARED_EXPERIMENT', '1')"), | 214 ( '--newlib-shared-experiment', "env.set('NEWLIB_SHARED_EXPERIMENT', '1')"), |
220 ( '(--pnacl-nativeld=.+)', "env.append('LD_FLAGS', $0)"), | 215 ( '(--pnacl-nativeld=.+)', "env.append('LD_FLAGS', $0)"), |
221 | 216 |
222 # Allowing C++ exception handling causes a specific set of native objects to | 217 # Allowing C++ exception handling causes a specific set of native objects to |
223 # get linked into the nexe. | 218 # get linked into the nexe. |
224 ( '--pnacl-allow-exceptions', "env.set('ALLOW_CXX_EXCEPTIONS', '1')"), | 219 ( '--pnacl-allow-exceptions', "env.set('ALLOW_CXX_EXCEPTIONS', '1')"), |
225 | 220 |
226 # Toggle the use of ELF-stubs / bitcode metadata, which represent real .so | |
227 # files in the final native link. | |
228 # There may be cases where this will not work (e.g., when the final link | |
229 # includes native .o files, where its imports / exports were not known | |
230 # at bitcode link time, and not added to the bitcode metadata). | |
231 ( '-usemeta', "env.set('USE_META', '1')"), | |
232 ( '-nousemeta', "env.set('USE_META', '0')"), | |
233 | |
234 ( '-rpath-link=(.+)', "env.append('LD_FLAGS', '-L'+$0)"), | 221 ( '-rpath-link=(.+)', "env.append('LD_FLAGS', '-L'+$0)"), |
235 | 222 |
236 ( '-fPIC', "env.set('PIC', '1')"), | 223 ( '-fPIC', "env.set('PIC', '1')"), |
237 | 224 |
238 ( '-Wl,(.*)', "env.append('LD_FLAGS', *($0).split(','))"), | 225 ( '-Wl,(.*)', "env.append('LD_FLAGS', *($0).split(','))"), |
239 ( '-bitcode-stream-rate=([0-9]+)', "env.set('BITCODE_STREAM_RATE', $0)"), | 226 ( '-bitcode-stream-rate=([0-9]+)', "env.set('BITCODE_STREAM_RATE', $0)"), |
240 | 227 |
241 ( '(-.*)', driver_tools.UnrecognizedOption), | 228 ( '(-.*)', driver_tools.UnrecognizedOption), |
242 | 229 |
243 ( '(.*)', "env.append('INPUTS', pathtools.normalize($0))"), | 230 ( '(.*)', "env.append('INPUTS', pathtools.normalize($0))"), |
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471 if infile: | 458 if infile: |
472 inputs = ListReplace(inputs, | 459 inputs = ListReplace(inputs, |
473 '__BITCODE__', | 460 '__BITCODE__', |
474 '--llc-translated-file=' + infile) | 461 '--llc-translated-file=' + infile) |
475 ToggleDefaultCommandlineLD(inputs, infile) | 462 ToggleDefaultCommandlineLD(inputs, infile) |
476 env.set('ld_inputs', *inputs) | 463 env.set('ld_inputs', *inputs) |
477 args = env.get('LD_ARGS') + ['-o', outfile] | 464 args = env.get('LD_ARGS') + ['-o', outfile] |
478 if not env.getbool('SHARED') and env.getbool('STDLIB'): | 465 if not env.getbool('SHARED') and env.getbool('STDLIB'): |
479 args += env.get('LD_ARGS_ENTRY') | 466 args += env.get('LD_ARGS_ENTRY') |
480 args += env.get('LD_FLAGS') | 467 args += env.get('LD_FLAGS') |
481 # If there is bitcode, there is also a metadata file. | |
482 if infile and env.getbool('USE_META'): | |
483 args += ['--metadata', '%s.meta' % infile] | |
484 driver_tools.RunDriver('nativeld', args) | 468 driver_tools.RunDriver('nativeld', args) |
485 | 469 |
486 def RunLLC(infile, outfile, filetype): | 470 def RunLLC(infile, outfile, filetype): |
487 env.push() | 471 env.push() |
488 env.setmany(input=infile, output=outfile, filetype=filetype) | 472 env.setmany(input=infile, output=outfile, filetype=filetype) |
489 if env.getbool('SANDBOXED'): | 473 if env.getbool('SANDBOXED'): |
490 is_shared, soname, needed = RunLLCSandboxed() | 474 is_shared, soname, needed = RunLLCSandboxed() |
491 env.pop() | 475 env.pop() |
492 # soname and dt_needed libs are returned from LLC and passed to LD | 476 # soname and dt_needed libs are returned from LLC and passed to LD |
493 driver_tools.SetBitcodeMetadata(infile, is_shared, soname, needed) | 477 driver_tools.SetBitcodeMetadata(infile, is_shared, soname, needed) |
494 else: | 478 else: |
495 driver_tools.Run("${RUN_LLC}") | 479 driver_tools.Run("${RUN_LLC}") |
496 # As a side effect, this creates a temporary file | |
497 if not env.getbool('SAVE_TEMPS'): | |
498 TempFiles.add(outfile + '.meta') | |
499 env.pop() | 480 env.pop() |
500 return 0 | 481 return 0 |
501 | 482 |
502 def RunLLCSandboxed(): | 483 def RunLLCSandboxed(): |
503 driver_tools.CheckTranslatorPrerequisites() | 484 driver_tools.CheckTranslatorPrerequisites() |
504 infile = env.getone('input') | 485 infile = env.getone('input') |
505 outfile = env.getone('output') | 486 outfile = env.getone('output') |
506 if not driver_tools.IsBitcode(infile): | 487 if not driver_tools.IsBitcode(infile): |
507 Log.Fatal('Input to sandboxed translator must be bitcode') | 488 Log.Fatal('Input to sandboxed translator must be bitcode') |
508 script = MakeSelUniversalScriptForLLC(infile, outfile) | 489 script = MakeSelUniversalScriptForLLC(infile, outfile) |
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574 | 555 |
575 ADVANCED OPTIONS: | 556 ADVANCED OPTIONS: |
576 -mattr=<+feat1,-feat2> Toggle specific cpu features on and off. | 557 -mattr=<+feat1,-feat2> Toggle specific cpu features on and off. |
577 -mcpu=<cpu-name> Target a specific cpu type. Tunes code as well as | 558 -mcpu=<cpu-name> Target a specific cpu type. Tunes code as well as |
578 turns cpu features on and off. | 559 turns cpu features on and off. |
579 -S Generate native assembly only. | 560 -S Generate native assembly only. |
580 -c Generate native object file only. | 561 -c Generate native object file only. |
581 --pnacl-sb Use the translator which runs inside the NaCl sandbox. | 562 --pnacl-sb Use the translator which runs inside the NaCl sandbox. |
582 -O[0-3] Change translation-time optimization level. | 563 -O[0-3] Change translation-time optimization level. |
583 """ | 564 """ |
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