| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "vm/globals.h" |
| #include "vm/simulator.h" |
| #include "vm/signal_handler.h" |
| #if defined(TARGET_OS_MACOS) |
| |
| namespace dart { |
| |
| uintptr_t SignalHandler::GetProgramCounter(const mcontext_t& mcontext) { |
| uintptr_t pc = 0; |
| |
| #if defined(HOST_ARCH_IA32) |
| pc = static_cast<uintptr_t>(mcontext->__ss.__eip); |
| #elif defined(HOST_ARCH_X64) |
| pc = static_cast<uintptr_t>(mcontext->__ss.__rip); |
| #elif defined(HOST_ARCH_ARM) |
| pc = static_cast<uintptr_t>(mcontext->__ss.__pc); |
| #elif defined(HOST_ARCH_ARM64) |
| pc = static_cast<uintptr_t>(mcontext->__ss.__pc); |
| #else |
| #error Unsuported architecture. |
| #endif // HOST_ARCH_... |
| |
| return pc; |
| } |
| |
| |
| uintptr_t SignalHandler::GetFramePointer(const mcontext_t& mcontext) { |
| uintptr_t fp = 0; |
| |
| #if defined(HOST_ARCH_IA32) |
| fp = static_cast<uintptr_t>(mcontext->__ss.__ebp); |
| #elif defined(HOST_ARCH_X64) |
| fp = static_cast<uintptr_t>(mcontext->__ss.__rbp); |
| #elif defined(HOST_ARCH_ARM) |
| fp = static_cast<uintptr_t>(mcontext->__ss.__r[11]); |
| #elif defined(HOST_ARCH_ARM64) |
| fp = static_cast<uintptr_t>(mcontext->__ss.__fp); |
| #else |
| #error Unsuported architecture. |
| #endif // HOST_ARCH_... |
| |
| return fp; |
| } |
| |
| |
| uintptr_t SignalHandler::GetCStackPointer(const mcontext_t& mcontext) { |
| uintptr_t sp = 0; |
| |
| #if defined(HOST_ARCH_IA32) |
| sp = static_cast<uintptr_t>(mcontext->__ss.__esp); |
| #elif defined(HOST_ARCH_X64) |
| sp = static_cast<uintptr_t>(mcontext->__ss.__rsp); |
| #elif defined(HOST_ARCH_ARM) |
| sp = static_cast<uintptr_t>(mcontext->__ss.__sp); |
| #elif defined(HOST_ARCH_ARM64) |
| sp = static_cast<uintptr_t>(mcontext->__ss.__sp); |
| #else |
| UNIMPLEMENTED(); |
| #endif // HOST_ARCH_... |
| |
| return sp; |
| } |
| |
| |
| uintptr_t SignalHandler::GetDartStackPointer(const mcontext_t& mcontext) { |
| return GetCStackPointer(mcontext); |
| } |
| |
| |
| uintptr_t SignalHandler::GetLinkRegister(const mcontext_t& mcontext) { |
| uintptr_t lr = 0; |
| |
| #if defined(TARGET_ARCH_IA32) |
| lr = 0; |
| #elif defined(TARGET_ARCH_X64) |
| lr = 0; |
| #elif defined(TARGET_ARCH_MIPS) && defined(USING_SIMULATOR) |
| lr = 0; |
| #elif defined(TARGET_ARCH_ARM) && defined(USING_SIMULATOR) |
| lr = 0; |
| #elif defined(TARGET_ARCH_ARM64) && defined(USING_SIMULATOR) |
| lr = 0; |
| #elif defined(TARGET_ARCH_ARM) |
| lr = 0; |
| #elif defined(TARGET_ARCH_ARM64) |
| lr = 0; |
| #elif defined(TARGET_ARCH_MIPS) |
| lr = 0; |
| #else |
| UNIMPLEMENTED(); |
| #endif // TARGET_ARCH_... |
| |
| return lr; |
| } |
| |
| |
| void SignalHandler::Install(SignalAction action) { |
| struct sigaction act; |
| act.sa_handler = NULL; |
| act.sa_sigaction = action; |
| sigemptyset(&act.sa_mask); |
| act.sa_flags = SA_RESTART | SA_SIGINFO; |
| int r = sigaction(SIGPROF, &act, NULL); |
| ASSERT(r == 0); |
| } |
| |
| |
| void SignalHandler::Remove() { |
| // Ignore future SIGPROF signals because by default SIGPROF will terminate |
| // the process and we may have some signals in flight. |
| struct sigaction act; |
| act.sa_handler = SIG_IGN; |
| sigemptyset(&act.sa_mask); |
| act.sa_flags = 0; |
| int r = sigaction(SIGPROF, &act, NULL); |
| ASSERT(r == 0); |
| } |
| |
| |
| } // namespace dart |
| |
| #endif // defined(TARGET_OS_MACOS) |