PlatformRegisters.h [plain text]
#pragma once
#include <wtf/Platform.h>
#include <wtf/StdLibExtras.h>
#if OS(DARWIN)
#include <mach/thread_act.h>
#include <signal.h>
#elif OS(WINDOWS)
#include <windows.h>
#else
#include <ucontext.h>
#endif
namespace WTF {
#if OS(DARWIN)
#if CPU(X86)
typedef i386_thread_state_t PlatformRegisters;
#elif CPU(X86_64)
typedef x86_thread_state64_t PlatformRegisters;
#elif CPU(PPC)
typedef ppc_thread_state_t PlatformRegisters;
#elif CPU(PPC64)
typedef ppc_thread_state64_t PlatformRegisters;
#elif CPU(ARM)
typedef arm_thread_state_t PlatformRegisters;
#elif CPU(ARM64)
typedef arm_thread_state64_t PlatformRegisters;
#else
#error Unknown Architecture
#endif
inline PlatformRegisters& registersFromUContext(ucontext_t* ucontext)
{
return ucontext->uc_mcontext->__ss;
}
#elif OS(WINDOWS)
using PlatformRegisters = CONTEXT;
#elif HAVE(MACHINE_CONTEXT)
struct PlatformRegisters {
mcontext_t machineContext;
};
inline PlatformRegisters& registersFromUContext(ucontext_t* ucontext)
{
#if CPU(PPC)
return *bitwise_cast<PlatformRegisters*>(ucontext->uc_mcontext.uc_regs);
#else
return *bitwise_cast<PlatformRegisters*>(&ucontext->uc_mcontext);
#endif
}
#else
struct PlatformRegisters {
void* stackPointer;
};
#endif
}
#if USE(PLATFORM_REGISTERS_WITH_PROFILE)
#if CPU(ARM64E)
namespace WTF {
extern void* threadStateLRInternal(PlatformRegisters&);
extern void* threadStatePCInternal(PlatformRegisters&);
}
using WTF::threadStateLRInternal;
using WTF::threadStatePCInternal;
#else // not CPU(ARM64E)
#define threadStateLRInternal(regs) bitwise_cast<void*>(arm_thread_state64_get_lr(regs))
#define threadStatePCInternal(regs) bitwise_cast<void*>(arm_thread_state64_get_pc(regs))
#endif // CPU(ARM64E)
#define WTF_READ_PLATFORM_REGISTERS_SP_WITH_PROFILE(regs) \
reinterpret_cast<void*>(arm_thread_state64_get_sp(const_cast<PlatformRegisters&>(regs)))
#define WTF_WRITE_PLATFORM_REGISTERS_SP_WITH_PROFILE(regs, newPointer) \
arm_thread_state64_set_sp(regs, reinterpret_cast<uintptr_t>(newPointer))
#define WTF_READ_PLATFORM_REGISTERS_FP_WITH_PROFILE(regs) \
reinterpret_cast<void*>(arm_thread_state64_get_fp(const_cast<PlatformRegisters&>(regs)))
#define WTF_WRITE_PLATFORM_REGISTERS_FP_WITH_PROFILE(regs, newPointer) \
arm_thread_state64_set_fp(regs, reinterpret_cast<uintptr_t>(newPointer))
#define WTF_READ_PLATFORM_REGISTERS_LR_WITH_PROFILE(regs) \
threadStateLRInternal(const_cast<PlatformRegisters&>(regs))
#define WTF_WRITE_PLATFORM_REGISTERS_LR_WITH_PROFILE(regs, newPointer) \
arm_thread_state64_set_lr_fptr(regs, newPointer)
#define WTF_READ_PLATFORM_REGISTERS_PC_WITH_PROFILE(regs) \
threadStatePCInternal(const_cast<PlatformRegisters&>(regs))
#define WTF_WRITE_PLATFORM_REGISTERS_PC_WITH_PROFILE(regs, newPointer) \
arm_thread_state64_set_pc_fptr(regs, newPointer)
#define WTF_READ_MACHINE_CONTEXT_SP_WITH_PROFILE(machineContext) \
WTF_READ_PLATFORM_REGISTERS_SP_WITH_PROFILE(machineContext->__ss)
#define WTF_WRITE_MACHINE_CONTEXT_SP_WITH_PROFILE(machineContext, newPointer) \
WTF_WRITE_PLATFORM_REGISTERS_SP_WITH_PROFILE(machineContext->__ss, newPointer)
#define WTF_READ_MACHINE_CONTEXT_FP_WITH_PROFILE(machineContext) \
WTF_READ_PLATFORM_REGISTERS_FP_WITH_PROFILE(machineContext->__ss)
#define WTF_WRITE_MACHINE_CONTEXT_FP_WITH_PROFILE(machineContext, newPointer) \
WTF_WRITE_PLATFORM_REGISTERS_FP_WITH_PROFILE(machineContext->__ss, newPointer)
#define WTF_WRITE_MACHINE_CONTEXT_LR_WITH_PROFILE(machineContext, newPointer) \
WTF_WRITE_PLATFORM_REGISTERS_LR_WITH_PROFILE(machineContext->__ss, newPointer)
#define WTF_READ_MACHINE_CONTEXT_PC_WITH_PROFILE(machineContext) \
WTF_READ_PLATFORM_REGISTERS_PC_WITH_PROFILE(machineContext->__ss)
#define WTF_WRITE_MACHINE_CONTEXT_PC_WITH_PROFILE(machineContext, newPointer) \
WTF_WRITE_PLATFORM_REGISTERS_PC_WITH_PROFILE(machineContext->__ss, newPointer)
#endif // USE(PLATFORM_REGISTERS_WITH_PROFILE)
using WTF::PlatformRegisters;