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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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277 } | 277 } |
278 } | 278 } |
279 fclose(f); | 279 fclose(f); |
280 | 280 |
281 // Did not find string in the proc file. | 281 // Did not find string in the proc file. |
282 return false; | 282 return false; |
283 } | 283 } |
284 #endif // def __mips__ | 284 #endif // def __mips__ |
285 | 285 |
286 | 286 |
| 287 #ifdef __sh__ |
| 288 bool OS::SHCpuHasFeature(CpuFeature feature) { |
| 289 switch (feature) { |
| 290 case FPU: |
| 291 // Assume FPU is always active. |
| 292 // All supported SH4 implementation feature it |
| 293 return true; |
| 294 default: |
| 295 UNREACHABLE(); |
| 296 } |
| 297 return false; |
| 298 } |
| 299 #endif // def __sh__ |
| 300 |
| 301 |
287 int OS::ActivationFrameAlignment() { | 302 int OS::ActivationFrameAlignment() { |
288 #ifdef V8_TARGET_ARCH_ARM | 303 #ifdef V8_TARGET_ARCH_ARM |
289 // On EABI ARM targets this is required for fp correctness in the | 304 // On EABI ARM targets this is required for fp correctness in the |
290 // runtime system. | 305 // runtime system. |
291 return 8; | 306 return 8; |
292 #elif V8_TARGET_ARCH_MIPS | 307 #elif V8_TARGET_ARCH_MIPS |
293 return 8; | 308 return 8; |
| 309 #elif V8_TARGET_ARCH_SH4 |
| 310 return 4; |
294 #endif | 311 #endif |
295 // With gcc 4.4 the tree vectorization optimizer can generate code | 312 // With gcc 4.4 the tree vectorization optimizer can generate code |
296 // that requires 16 byte alignment such as movdqa on x86. | 313 // that requires 16 byte alignment such as movdqa on x86. |
297 return 16; | 314 return 16; |
298 } | 315 } |
299 | 316 |
300 | 317 |
301 void OS::ReleaseStore(volatile AtomicWord* ptr, AtomicWord value) { | 318 void OS::ReleaseStore(volatile AtomicWord* ptr, AtomicWord value) { |
302 #if (defined(V8_TARGET_ARCH_ARM) && defined(__arm__)) || \ | 319 #if (defined(V8_TARGET_ARCH_ARM) && defined(__arm__)) || \ |
303 (defined(V8_TARGET_ARCH_MIPS) && defined(__mips__)) | 320 (defined(V8_TARGET_ARCH_MIPS) && defined(__mips__)) |
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402 | 419 |
403 void OS::DebugBreak() { | 420 void OS::DebugBreak() { |
404 // TODO(lrn): Introduce processor define for runtime system (!= V8_ARCH_x, | 421 // TODO(lrn): Introduce processor define for runtime system (!= V8_ARCH_x, |
405 // which is the architecture of generated code). | 422 // which is the architecture of generated code). |
406 #if (defined(__arm__) || defined(__thumb__)) | 423 #if (defined(__arm__) || defined(__thumb__)) |
407 # if defined(CAN_USE_ARMV5_INSTRUCTIONS) | 424 # if defined(CAN_USE_ARMV5_INSTRUCTIONS) |
408 asm("bkpt 0"); | 425 asm("bkpt 0"); |
409 # endif | 426 # endif |
410 #elif defined(__mips__) | 427 #elif defined(__mips__) |
411 asm("break"); | 428 asm("break"); |
| 429 #elif defined(__sh__) |
| 430 asm("ldtlb"); |
412 #else | 431 #else |
413 asm("int $3"); | 432 asm("int $3"); |
414 #endif | 433 #endif |
415 } | 434 } |
416 | 435 |
417 | 436 |
418 class PosixMemoryMappedFile : public OS::MemoryMappedFile { | 437 class PosixMemoryMappedFile : public OS::MemoryMappedFile { |
419 public: | 438 public: |
420 PosixMemoryMappedFile(FILE* file, void* memory, int size) | 439 PosixMemoryMappedFile(FILE* file, void* memory, int size) |
421 : file_(file), memory_(memory), size_(size) { } | 440 : file_(file), memory_(memory), size_(size) { } |
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1062 sample->pc = reinterpret_cast<Address>(mcontext.gregs[R15]); | 1081 sample->pc = reinterpret_cast<Address>(mcontext.gregs[R15]); |
1063 sample->sp = reinterpret_cast<Address>(mcontext.gregs[R13]); | 1082 sample->sp = reinterpret_cast<Address>(mcontext.gregs[R13]); |
1064 sample->fp = reinterpret_cast<Address>(mcontext.gregs[R11]); | 1083 sample->fp = reinterpret_cast<Address>(mcontext.gregs[R11]); |
1065 #else | 1084 #else |
1066 sample->pc = reinterpret_cast<Address>(mcontext.arm_pc); | 1085 sample->pc = reinterpret_cast<Address>(mcontext.arm_pc); |
1067 sample->sp = reinterpret_cast<Address>(mcontext.arm_sp); | 1086 sample->sp = reinterpret_cast<Address>(mcontext.arm_sp); |
1068 sample->fp = reinterpret_cast<Address>(mcontext.arm_fp); | 1087 sample->fp = reinterpret_cast<Address>(mcontext.arm_fp); |
1069 #endif // defined(__GLIBC__) && !defined(__UCLIBC__) && | 1088 #endif // defined(__GLIBC__) && !defined(__UCLIBC__) && |
1070 // (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3)) | 1089 // (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3)) |
1071 #elif V8_HOST_ARCH_MIPS | 1090 #elif V8_HOST_ARCH_MIPS |
| 1091 sample.pc = reinterpret_cast<Address>(mcontext.pc); |
| 1092 sample.sp = reinterpret_cast<Address>(mcontext.gregs[29]); |
| 1093 sample.fp = reinterpret_cast<Address>(mcontext.gregs[30]); |
| 1094 #elif defined(V8_HOST_ARCH_SH4) |
1072 sample->pc = reinterpret_cast<Address>(mcontext.pc); | 1095 sample->pc = reinterpret_cast<Address>(mcontext.pc); |
1073 sample->sp = reinterpret_cast<Address>(mcontext.gregs[29]); | 1096 sample->sp = reinterpret_cast<Address>(mcontext.gregs[R15]); |
1074 sample->fp = reinterpret_cast<Address>(mcontext.gregs[30]); | 1097 sample->fp = reinterpret_cast<Address>(mcontext.gregs[R14]); |
1075 #endif // V8_HOST_ARCH_* | 1098 #endif // V8_HOST_ARCH_* |
1076 sampler->SampleStack(sample); | 1099 sampler->SampleStack(sample); |
1077 sampler->Tick(sample); | 1100 sampler->Tick(sample); |
1078 } | 1101 } |
1079 | 1102 |
1080 | 1103 |
1081 class Sampler::PlatformData : public Malloced { | 1104 class Sampler::PlatformData : public Malloced { |
1082 public: | 1105 public: |
1083 PlatformData() : vm_tid_(GetThreadID()) {} | 1106 PlatformData() : vm_tid_(GetThreadID()) {} |
1084 | 1107 |
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1313 | 1336 |
1314 | 1337 |
1315 void Sampler::Stop() { | 1338 void Sampler::Stop() { |
1316 ASSERT(IsActive()); | 1339 ASSERT(IsActive()); |
1317 SignalSender::RemoveActiveSampler(this); | 1340 SignalSender::RemoveActiveSampler(this); |
1318 SetActive(false); | 1341 SetActive(false); |
1319 } | 1342 } |
1320 | 1343 |
1321 | 1344 |
1322 } } // namespace v8::internal | 1345 } } // namespace v8::internal |
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