164 lines
5.3 KiB
C++
164 lines
5.3 KiB
C++
/*
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* Copyright (C) 2017 Yusuke Suzuki <utatane.tea@gmail.com>
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GOOGLE, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <wtf/Platform.h>
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#include <wtf/StdLibExtras.h>
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#if OS(DARWIN)
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#include <mach/thread_act.h>
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#include <signal.h>
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#elif OS(WINDOWS)
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#include <windows.h>
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#elif OS(HAIKU)
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#else
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#include <sys/ucontext.h>
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#endif
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namespace WTF {
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#if OS(DARWIN)
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#if CPU(X86)
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typedef i386_thread_state_t PlatformRegisters;
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#elif CPU(X86_64)
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typedef x86_thread_state64_t PlatformRegisters;
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#elif CPU(PPC)
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typedef ppc_thread_state_t PlatformRegisters;
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#elif CPU(PPC64)
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typedef ppc_thread_state64_t PlatformRegisters;
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#elif CPU(ARM)
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typedef arm_thread_state_t PlatformRegisters;
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#elif CPU(ARM64)
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typedef arm_thread_state64_t PlatformRegisters;
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#else
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#error Unknown Architecture
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#endif
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inline PlatformRegisters& registersFromUContext(ucontext_t* ucontext)
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{
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return ucontext->uc_mcontext->__ss;
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}
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#elif OS(WINDOWS)
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using PlatformRegisters = CONTEXT;
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#elif HAVE(MACHINE_CONTEXT)
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struct PlatformRegisters {
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mcontext_t machineContext;
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};
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inline PlatformRegisters& registersFromUContext(ucontext_t* ucontext)
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{
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#if CPU(PPC)
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return *bitwise_cast<PlatformRegisters*>(ucontext->uc_mcontext.uc_regs);
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#else
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return *bitwise_cast<PlatformRegisters*>(&ucontext->uc_mcontext);
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#endif
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}
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#else
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struct PlatformRegisters {
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void* stackPointer;
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};
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#endif
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} // namespace WTF
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#if USE(PLATFORM_REGISTERS_WITH_PROFILE)
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#if CPU(ARM64E)
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namespace WTF {
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extern void* threadStateLRInternal(PlatformRegisters&);
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extern void* threadStatePCInternal(PlatformRegisters&);
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} // namespace WTF
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using WTF::threadStateLRInternal;
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using WTF::threadStatePCInternal;
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#else // not CPU(ARM64E)
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#define threadStateLRInternal(regs) bitwise_cast<void*>(arm_thread_state64_get_lr(regs))
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#define threadStatePCInternal(regs) bitwise_cast<void*>(arm_thread_state64_get_pc(regs))
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#endif // CPU(ARM64E)
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#define WTF_READ_PLATFORM_REGISTERS_SP_WITH_PROFILE(regs) \
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reinterpret_cast<void*>(arm_thread_state64_get_sp(const_cast<PlatformRegisters&>(regs)))
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#define WTF_WRITE_PLATFORM_REGISTERS_SP_WITH_PROFILE(regs, newPointer) \
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arm_thread_state64_set_sp(regs, reinterpret_cast<uintptr_t>(newPointer))
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#define WTF_READ_PLATFORM_REGISTERS_FP_WITH_PROFILE(regs) \
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reinterpret_cast<void*>(arm_thread_state64_get_fp(const_cast<PlatformRegisters&>(regs)))
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#define WTF_WRITE_PLATFORM_REGISTERS_FP_WITH_PROFILE(regs, newPointer) \
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arm_thread_state64_set_fp(regs, reinterpret_cast<uintptr_t>(newPointer))
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#define WTF_READ_PLATFORM_REGISTERS_LR_WITH_PROFILE(regs) \
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threadStateLRInternal(const_cast<PlatformRegisters&>(regs))
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#define WTF_WRITE_PLATFORM_REGISTERS_LR_WITH_PROFILE(regs, newPointer) \
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arm_thread_state64_set_lr_fptr(regs, newPointer)
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#define WTF_READ_PLATFORM_REGISTERS_PC_WITH_PROFILE(regs) \
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threadStatePCInternal(const_cast<PlatformRegisters&>(regs))
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#define WTF_WRITE_PLATFORM_REGISTERS_PC_WITH_PROFILE(regs, newPointer) \
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arm_thread_state64_set_pc_fptr(regs, newPointer)
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#define WTF_READ_MACHINE_CONTEXT_SP_WITH_PROFILE(machineContext) \
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WTF_READ_PLATFORM_REGISTERS_SP_WITH_PROFILE(machineContext->__ss)
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#define WTF_WRITE_MACHINE_CONTEXT_SP_WITH_PROFILE(machineContext, newPointer) \
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WTF_WRITE_PLATFORM_REGISTERS_SP_WITH_PROFILE(machineContext->__ss, newPointer)
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#define WTF_READ_MACHINE_CONTEXT_FP_WITH_PROFILE(machineContext) \
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WTF_READ_PLATFORM_REGISTERS_FP_WITH_PROFILE(machineContext->__ss)
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#define WTF_WRITE_MACHINE_CONTEXT_FP_WITH_PROFILE(machineContext, newPointer) \
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WTF_WRITE_PLATFORM_REGISTERS_FP_WITH_PROFILE(machineContext->__ss, newPointer)
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#define WTF_WRITE_MACHINE_CONTEXT_LR_WITH_PROFILE(machineContext, newPointer) \
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WTF_WRITE_PLATFORM_REGISTERS_LR_WITH_PROFILE(machineContext->__ss, newPointer)
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#define WTF_READ_MACHINE_CONTEXT_PC_WITH_PROFILE(machineContext) \
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WTF_READ_PLATFORM_REGISTERS_PC_WITH_PROFILE(machineContext->__ss)
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#define WTF_WRITE_MACHINE_CONTEXT_PC_WITH_PROFILE(machineContext, newPointer) \
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WTF_WRITE_PLATFORM_REGISTERS_PC_WITH_PROFILE(machineContext->__ss, newPointer)
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#endif // USE(PLATFORM_REGISTERS_WITH_PROFILE)
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using WTF::PlatformRegisters;
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