#pragma once
#include <setjmp.h>
namespace JSC {
#if !OS(WINDOWS) && !(OS(LINUX) && CPU(ARM64))
#if CPU(X86)
struct RegisterState {
uint32_t ebx;
uint32_t edi;
uint32_t esi;
};
#define SAVE_REG(regname, where) \
asm volatile ("movl %%" #regname ", %0" : "=m"(where) : : "memory")
#define ALLOCATE_AND_GET_REGISTER_STATE(registers) \
RegisterState registers; \
SAVE_REG(ebx, registers.ebx); \
SAVE_REG(edi, registers.edi); \
SAVE_REG(esi, registers.esi)
#elif CPU(X86_64)
struct RegisterState {
uint64_t rbx;
uint64_t r12;
uint64_t r13;
uint64_t r14;
uint64_t r15;
};
#define SAVE_REG(regname, where) \
asm volatile ("movq %%" #regname ", %0" : "=m"(where) : : "memory")
#define ALLOCATE_AND_GET_REGISTER_STATE(registers) \
RegisterState registers; \
SAVE_REG(rbx, registers.rbx); \
SAVE_REG(r12, registers.r12); \
SAVE_REG(r13, registers.r13); \
SAVE_REG(r14, registers.r14); \
SAVE_REG(r15, registers.r15)
#elif CPU(ARM_THUMB2)
struct RegisterState {
uint32_t r4;
uint32_t r5;
uint32_t r6;
uint32_t r8;
uint32_t r9;
uint32_t r10;
uint32_t r11;
};
#define SAVE_REG(regname, where) \
asm volatile ("str " #regname ", %0" : "=m"(where) : : "memory")
#define ALLOCATE_AND_GET_REGISTER_STATE(registers) \
RegisterState registers; \
SAVE_REG(r4, registers.r4); \
SAVE_REG(r5, registers.r5); \
SAVE_REG(r6, registers.r6); \
SAVE_REG(r8, registers.r8); \
SAVE_REG(r9, registers.r9); \
SAVE_REG(r10, registers.r10); \
SAVE_REG(r11, registers.r11)
#elif CPU(ARM64)
struct RegisterState {
uint64_t x19;
uint64_t x20;
uint64_t x21;
uint64_t x22;
uint64_t x23;
uint64_t x24;
uint64_t x25;
uint64_t x26;
uint64_t x27;
uint64_t x28;
};
#define SAVE_REG(regname, where) \
asm volatile ("str " #regname ", %0" : "=m"(where) : : "memory")
#define ALLOCATE_AND_GET_REGISTER_STATE(registers) \
RegisterState registers; \
SAVE_REG(x19, registers.x19); \
SAVE_REG(x20, registers.x20); \
SAVE_REG(x21, registers.x21); \
SAVE_REG(x22, registers.x22); \
SAVE_REG(x23, registers.x23); \
SAVE_REG(x24, registers.x24); \
SAVE_REG(x25, registers.x25); \
SAVE_REG(x26, registers.x26); \
SAVE_REG(x27, registers.x27); \
SAVE_REG(x28, registers.x28)
#endif
#endif // !OS(WINDOWS)
#ifndef ALLOCATE_AND_GET_REGISTER_STATE
#if COMPILER(GCC_OR_CLANG)
#define REGISTER_BUFFER_ALIGNMENT __attribute__ ((aligned (sizeof(void*))))
#else
#define REGISTER_BUFFER_ALIGNMENT
#endif
typedef jmp_buf RegisterState;
#if COMPILER(MSVC)
#pragma warning(push)
#pragma warning(disable: 4611)
#define ALLOCATE_AND_GET_REGISTER_STATE(registers) \
RegisterState registers REGISTER_BUFFER_ALIGNMENT; \
setjmp(registers)
#pragma warning(pop)
#else
#define ALLOCATE_AND_GET_REGISTER_STATE(registers) \
RegisterState registers REGISTER_BUFFER_ALIGNMENT; \
setjmp(registers)
#endif
#endif // ALLOCATE_AND_GET_REGISTER_STATE
}