#pragma once
#include "MacroAssembler.h"
#include <array>
#include <wtf/PrintStream.h>
namespace JSC {
enum NoResultTag { NoResult };
typedef MacroAssembler::RegisterID GPRReg;
static constexpr GPRReg InvalidGPRReg { GPRReg::InvalidGPRReg };
#if ENABLE(ASSEMBLER)
#if USE(JSVALUE64)
class JSValueRegs {
public:
constexpr JSValueRegs()
: m_gpr(InvalidGPRReg)
{
}
constexpr explicit JSValueRegs(GPRReg gpr)
: m_gpr(gpr)
{
}
static JSValueRegs payloadOnly(GPRReg gpr)
{
return JSValueRegs(gpr);
}
static JSValueRegs withTwoAvailableRegs(GPRReg gpr, GPRReg)
{
return JSValueRegs(gpr);
}
bool operator!() const { return m_gpr == InvalidGPRReg; }
explicit operator bool() const { return m_gpr != InvalidGPRReg; }
bool operator==(JSValueRegs other) { return m_gpr == other.m_gpr; }
bool operator!=(JSValueRegs other) { return !(*this == other); }
GPRReg gpr() const { return m_gpr; }
GPRReg tagGPR() const { return InvalidGPRReg; }
GPRReg payloadGPR() const { return m_gpr; }
bool uses(GPRReg gpr) const { return m_gpr == gpr; }
void dump(PrintStream&) const;
private:
GPRReg m_gpr;
};
class JSValueSource {
public:
JSValueSource()
: m_offset(notAddress())
, m_base(InvalidGPRReg)
{
}
JSValueSource(JSValueRegs regs)
: m_offset(notAddress())
, m_base(regs.gpr())
{
}
explicit JSValueSource(GPRReg gpr)
: m_offset(notAddress())
, m_base(gpr)
{
}
JSValueSource(MacroAssembler::Address address)
: m_offset(address.offset)
, m_base(address.base)
{
ASSERT(m_offset != notAddress());
ASSERT(m_base != InvalidGPRReg);
}
static JSValueSource unboxedCell(GPRReg payloadGPR)
{
return JSValueSource(payloadGPR);
}
bool operator!() const { return m_base == InvalidGPRReg; }
explicit operator bool() const { return m_base != InvalidGPRReg; }
bool isAddress() const { return m_offset != notAddress(); }
int32_t offset() const
{
ASSERT(isAddress());
return m_offset;
}
GPRReg base() const
{
ASSERT(isAddress());
return m_base;
}
GPRReg gpr() const
{
ASSERT(!isAddress());
return m_base;
}
GPRReg payloadGPR() const { return gpr(); }
JSValueRegs regs() const
{
return JSValueRegs(gpr());
}
MacroAssembler::Address asAddress() const { return MacroAssembler::Address(base(), offset()); }
private:
static inline int32_t notAddress() { return 0x80000000; }
int32_t m_offset;
GPRReg m_base;
};
#endif // USE(JSVALUE64)
#if USE(JSVALUE32_64)
class JSValueRegs {
public:
JSValueRegs()
: m_tagGPR(InvalidGPRReg)
, m_payloadGPR(InvalidGPRReg)
{
}
JSValueRegs(GPRReg tagGPR, GPRReg payloadGPR)
: m_tagGPR(tagGPR)
, m_payloadGPR(payloadGPR)
{
}
static JSValueRegs withTwoAvailableRegs(GPRReg gpr1, GPRReg gpr2)
{
return JSValueRegs(gpr1, gpr2);
}
static JSValueRegs payloadOnly(GPRReg gpr)
{
return JSValueRegs(InvalidGPRReg, gpr);
}
bool operator!() const { return !static_cast<bool>(*this); }
explicit operator bool() const
{
return static_cast<GPRReg>(m_tagGPR) != InvalidGPRReg
|| static_cast<GPRReg>(m_payloadGPR) != InvalidGPRReg;
}
bool operator==(JSValueRegs other) const
{
return m_tagGPR == other.m_tagGPR
&& m_payloadGPR == other.m_payloadGPR;
}
bool operator!=(JSValueRegs other) const { return !(*this == other); }
GPRReg tagGPR() const { return m_tagGPR; }
GPRReg payloadGPR() const { return m_payloadGPR; }
GPRReg gpr(WhichValueWord which) const
{
switch (which) {
case TagWord:
return tagGPR();
case PayloadWord:
return payloadGPR();
}
ASSERT_NOT_REACHED();
return tagGPR();
}
bool uses(GPRReg gpr) const { return m_tagGPR == gpr || m_payloadGPR == gpr; }
void dump(PrintStream&) const;
private:
GPRReg m_tagGPR;
GPRReg m_payloadGPR;
};
class JSValueSource {
public:
JSValueSource()
: m_offset(notAddress())
, m_baseOrTag(InvalidGPRReg)
, m_payload(InvalidGPRReg)
, m_tagType(0)
{
}
JSValueSource(JSValueRegs regs)
: m_offset(notAddress())
, m_baseOrTag(regs.tagGPR())
, m_payload(regs.payloadGPR())
, m_tagType(0)
{
}
JSValueSource(GPRReg tagGPR, GPRReg payloadGPR)
: m_offset(notAddress())
, m_baseOrTag(tagGPR)
, m_payload(payloadGPR)
, m_tagType(0)
{
}
JSValueSource(MacroAssembler::Address address)
: m_offset(address.offset)
, m_baseOrTag(address.base)
, m_payload(InvalidGPRReg)
, m_tagType(0)
{
ASSERT(m_offset != notAddress());
ASSERT(m_baseOrTag != InvalidGPRReg);
}
static JSValueSource unboxedCell(GPRReg payloadGPR)
{
JSValueSource result;
result.m_offset = notAddress();
result.m_baseOrTag = InvalidGPRReg;
result.m_payload = payloadGPR;
result.m_tagType = static_cast<int8_t>(JSValue::CellTag);
return result;
}
bool operator!() const { return !static_cast<bool>(*this); }
explicit operator bool() const
{
return m_baseOrTag != InvalidGPRReg || m_payload != InvalidGPRReg;
}
bool isAddress() const
{
ASSERT(!!*this);
return m_offset != notAddress();
}
int32_t offset() const
{
ASSERT(isAddress());
return m_offset;
}
GPRReg base() const
{
ASSERT(isAddress());
return m_baseOrTag;
}
GPRReg tagGPR() const
{
ASSERT(!isAddress() && m_baseOrTag != InvalidGPRReg);
return m_baseOrTag;
}
GPRReg payloadGPR() const
{
ASSERT(!isAddress());
return m_payload;
}
bool hasKnownTag() const
{
ASSERT(!!*this);
ASSERT(!isAddress());
return m_baseOrTag == InvalidGPRReg;
}
uint32_t tag() const
{
return static_cast<int32_t>(m_tagType);
}
JSValueRegs regs() const
{
return JSValueRegs(tagGPR(), payloadGPR());
}
MacroAssembler::Address asAddress(unsigned additionalOffset = 0) const { return MacroAssembler::Address(base(), offset() + additionalOffset); }
private:
static inline int32_t notAddress() { return 0x80000000; }
int32_t m_offset;
GPRReg m_baseOrTag;
GPRReg m_payload;
int8_t m_tagType; };
#endif // USE(JSVALUE32_64)
#if CPU(X86)
#define NUMBER_OF_ARGUMENT_REGISTERS 0u
#define NUMBER_OF_CALLEE_SAVES_REGISTERS 0u
class GPRInfo {
public:
typedef GPRReg RegisterType;
static constexpr unsigned numberOfRegisters = 6;
static constexpr unsigned numberOfArgumentRegisters = NUMBER_OF_ARGUMENT_REGISTERS;
static constexpr GPRReg regT0 = X86Registers::eax;
static constexpr GPRReg regT1 = X86Registers::edx;
static constexpr GPRReg regT2 = X86Registers::ecx;
static constexpr GPRReg regT3 = X86Registers::ebx; static constexpr GPRReg regT4 = X86Registers::esi; static constexpr GPRReg regT5 = X86Registers::edi; static constexpr GPRReg callFrameRegister = X86Registers::ebp;
static constexpr GPRReg argumentGPR0 = X86Registers::ecx; static constexpr GPRReg argumentGPR1 = X86Registers::edx; static constexpr GPRReg argumentGPR2 = X86Registers::eax; static constexpr GPRReg argumentGPR3 = X86Registers::ebx; static constexpr GPRReg nonArgGPR0 = X86Registers::esi; static constexpr GPRReg returnValueGPR = X86Registers::eax; static constexpr GPRReg returnValueGPR2 = X86Registers::edx; static constexpr GPRReg nonPreservedNonReturnGPR = X86Registers::ecx;
static GPRReg toRegister(unsigned index)
{
ASSERT(index < numberOfRegisters);
static const GPRReg registerForIndex[numberOfRegisters] = { regT0, regT1, regT2, regT3, regT4, regT5 };
return registerForIndex[index];
}
static GPRReg toArgumentRegister(unsigned)
{
UNREACHABLE_FOR_PLATFORM();
return InvalidGPRReg;
}
static unsigned toIndex(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
ASSERT(static_cast<int>(reg) < 8);
static const unsigned indexForRegister[8] = { 0, 2, 1, 3, InvalidIndex, InvalidIndex, 4, 5 };
unsigned result = indexForRegister[reg];
return result;
}
static const char* debugName(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
return MacroAssembler::gprName(reg);
}
static constexpr unsigned InvalidIndex = 0xffffffff;
};
#endif // CPU(X86)
#if CPU(X86_64)
#if !OS(WINDOWS)
#define NUMBER_OF_ARGUMENT_REGISTERS 6u
#define NUMBER_OF_CALLEE_SAVES_REGISTERS 5u
#else
#define NUMBER_OF_ARGUMENT_REGISTERS 4u
#define NUMBER_OF_CALLEE_SAVES_REGISTERS 7u
#endif
class GPRInfo {
public:
typedef GPRReg RegisterType;
static constexpr unsigned numberOfRegisters = 11;
static constexpr unsigned numberOfArgumentRegisters = NUMBER_OF_ARGUMENT_REGISTERS;
static constexpr GPRReg callFrameRegister = X86Registers::ebp;
static constexpr GPRReg numberTagRegister = X86Registers::r14;
static constexpr GPRReg notCellMaskRegister = X86Registers::r15;
static constexpr GPRReg regT0 = X86Registers::eax;
#if !OS(WINDOWS)
static constexpr GPRReg regT1 = X86Registers::esi;
static constexpr GPRReg regT2 = X86Registers::edx;
static constexpr GPRReg regT3 = X86Registers::ecx;
static constexpr GPRReg regT4 = X86Registers::r8;
static constexpr GPRReg regT5 = X86Registers::r10;
static constexpr GPRReg regT6 = X86Registers::edi;
static constexpr GPRReg regT7 = X86Registers::r9;
#else
static constexpr GPRReg regT1 = X86Registers::edx;
static constexpr GPRReg regT2 = X86Registers::r8;
static constexpr GPRReg regT3 = X86Registers::r9;
static constexpr GPRReg regT4 = X86Registers::r10;
static constexpr GPRReg regT5 = X86Registers::ecx;
#endif
static constexpr GPRReg regCS0 = X86Registers::ebx;
#if !OS(WINDOWS)
static constexpr GPRReg regCS1 = X86Registers::r12;
static constexpr GPRReg regCS2 = X86Registers::r13;
static constexpr GPRReg regCS3 = X86Registers::r14;
static constexpr GPRReg regCS4 = X86Registers::r15;
#else
static constexpr GPRReg regCS1 = X86Registers::esi;
static constexpr GPRReg regCS2 = X86Registers::edi;
static constexpr GPRReg regCS3 = X86Registers::r12;
static constexpr GPRReg regCS4 = X86Registers::r13;
static constexpr GPRReg regCS5 = X86Registers::r14;
static constexpr GPRReg regCS6 = X86Registers::r15;
#endif
#if !OS(WINDOWS)
static constexpr GPRReg argumentGPR0 = X86Registers::edi; static constexpr GPRReg argumentGPR1 = X86Registers::esi; static constexpr GPRReg argumentGPR2 = X86Registers::edx; static constexpr GPRReg argumentGPR3 = X86Registers::ecx; static constexpr GPRReg argumentGPR4 = X86Registers::r8; static constexpr GPRReg argumentGPR5 = X86Registers::r9; #else
static constexpr GPRReg argumentGPR0 = X86Registers::ecx; static constexpr GPRReg argumentGPR1 = X86Registers::edx; static constexpr GPRReg argumentGPR2 = X86Registers::r8; static constexpr GPRReg argumentGPR3 = X86Registers::r9; #endif
static constexpr GPRReg nonArgGPR0 = X86Registers::r10; static constexpr GPRReg returnValueGPR = X86Registers::eax; static constexpr GPRReg returnValueGPR2 = X86Registers::edx; static constexpr GPRReg nonPreservedNonReturnGPR = X86Registers::r10; static constexpr GPRReg nonPreservedNonArgumentGPR0 = X86Registers::r10; static constexpr GPRReg nonPreservedNonArgumentGPR1 = X86Registers::eax;
static constexpr GPRReg patchpointScratchRegister = MacroAssembler::s_scratchRegister;
static GPRReg toRegister(unsigned index)
{
ASSERT(index < numberOfRegisters);
#if !OS(WINDOWS)
static const GPRReg registerForIndex[numberOfRegisters] = { regT0, regT1, regT2, regT3, regT4, regT5, regT6, regT7, regCS0, regCS1, regCS2 };
#else
static const GPRReg registerForIndex[numberOfRegisters] = { regT0, regT1, regT2, regT3, regT4, regT5, regCS0, regCS1, regCS2, regCS3, regCS4 };
#endif
return registerForIndex[index];
}
static GPRReg toArgumentRegister(unsigned index)
{
ASSERT(index < numberOfArgumentRegisters);
#if !OS(WINDOWS)
static const GPRReg registerForIndex[numberOfArgumentRegisters] = { argumentGPR0, argumentGPR1, argumentGPR2, argumentGPR3, argumentGPR4, argumentGPR5 };
#else
static const GPRReg registerForIndex[numberOfArgumentRegisters] = { argumentGPR0, argumentGPR1, argumentGPR2, argumentGPR3 };
#endif
return registerForIndex[index];
}
static unsigned toIndex(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
ASSERT(static_cast<int>(reg) < 16);
#if !OS(WINDOWS)
static const unsigned indexForRegister[16] = { 0, 3, 2, 8, InvalidIndex, InvalidIndex, 1, 6, 4, 7, 5, InvalidIndex, 9, 10, InvalidIndex, InvalidIndex };
#else
static const unsigned indexForRegister[16] = { 0, 5, 1, 6, InvalidIndex, InvalidIndex, 7, 8, 2, 3, 4, InvalidIndex, 9, 10, InvalidIndex, InvalidIndex };
#endif
return indexForRegister[reg];
}
static const char* debugName(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
return MacroAssembler::gprName(reg);
}
static const std::array<GPRReg, 3>& reservedRegisters()
{
static const std::array<GPRReg, 3> reservedRegisters { {
MacroAssembler::s_scratchRegister,
numberTagRegister,
notCellMaskRegister,
} };
return reservedRegisters;
}
static constexpr unsigned InvalidIndex = 0xffffffff;
};
#endif // CPU(X86_64)
#if CPU(ARM_THUMB2)
#define NUMBER_OF_ARGUMENT_REGISTERS 4u
#define NUMBER_OF_CALLEE_SAVES_REGISTERS 1u
class GPRInfo {
public:
typedef GPRReg RegisterType;
static constexpr unsigned numberOfRegisters = 9;
static constexpr unsigned numberOfArgumentRegisters = NUMBER_OF_ARGUMENT_REGISTERS;
static constexpr GPRReg regT0 = ARMRegisters::r0;
static constexpr GPRReg regT1 = ARMRegisters::r1;
static constexpr GPRReg regT2 = ARMRegisters::r2;
static constexpr GPRReg regT3 = ARMRegisters::r3;
static constexpr GPRReg regT4 = ARMRegisters::r8;
static constexpr GPRReg regT5 = ARMRegisters::r9;
static constexpr GPRReg regT6 = ARMRegisters::r10;
static constexpr GPRReg regT7 = ARMRegisters::r5;
static constexpr GPRReg regT8 = ARMRegisters::r4;
static constexpr GPRReg regCS0 = ARMRegisters::r11;
static constexpr GPRReg callFrameRegister = ARMRegisters::fp;
static constexpr GPRReg argumentGPR0 = ARMRegisters::r0; static constexpr GPRReg argumentGPR1 = ARMRegisters::r1; static constexpr GPRReg argumentGPR2 = ARMRegisters::r2; static constexpr GPRReg argumentGPR3 = ARMRegisters::r3; static constexpr GPRReg nonArgGPR0 = ARMRegisters::r4; static constexpr GPRReg nonArgGPR1 = ARMRegisters::r8; static constexpr GPRReg returnValueGPR = ARMRegisters::r0; static constexpr GPRReg returnValueGPR2 = ARMRegisters::r1; static constexpr GPRReg nonPreservedNonReturnGPR = ARMRegisters::r5;
static GPRReg toRegister(unsigned index)
{
ASSERT(index < numberOfRegisters);
static const GPRReg registerForIndex[numberOfRegisters] = { regT0, regT1, regT2, regT3, regT4, regT5, regT6, regT7, regT8 };
return registerForIndex[index];
}
static GPRReg toArgumentRegister(unsigned index)
{
ASSERT(index < numberOfArgumentRegisters);
static const GPRReg registerForIndex[numberOfArgumentRegisters] = { argumentGPR0, argumentGPR1, argumentGPR2, argumentGPR3 };
return registerForIndex[index];
}
static unsigned toIndex(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
ASSERT(static_cast<int>(reg) < 16);
static const unsigned indexForRegister[16] =
{ 0, 1, 2, 3, 8, 7, InvalidIndex, InvalidIndex, 4, 5, 6, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex };
unsigned result = indexForRegister[reg];
return result;
}
static const char* debugName(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
return MacroAssembler::gprName(reg);
}
static constexpr unsigned InvalidIndex = 0xffffffff;
};
#endif // CPU(ARM)
#if CPU(ARM64)
#define NUMBER_OF_ARGUMENT_REGISTERS 8u
#define NUMBER_OF_CALLEE_SAVES_REGISTERS 18u
class GPRInfo {
public:
typedef GPRReg RegisterType;
static constexpr unsigned numberOfRegisters = 16;
static constexpr unsigned numberOfArgumentRegisters = 8;
static constexpr GPRReg callFrameRegister = ARM64Registers::fp;
static constexpr GPRReg numberTagRegister = ARM64Registers::x27;
static constexpr GPRReg notCellMaskRegister = ARM64Registers::x28;
static constexpr GPRReg dataTempRegister = MacroAssembler::dataTempRegister;
static constexpr GPRReg memoryTempRegister = MacroAssembler::memoryTempRegister;
static constexpr GPRReg regT0 = ARM64Registers::x0;
static constexpr GPRReg regT1 = ARM64Registers::x1;
static constexpr GPRReg regT2 = ARM64Registers::x2;
static constexpr GPRReg regT3 = ARM64Registers::x3;
static constexpr GPRReg regT4 = ARM64Registers::x4;
static constexpr GPRReg regT5 = ARM64Registers::x5;
static constexpr GPRReg regT6 = ARM64Registers::x6;
static constexpr GPRReg regT7 = ARM64Registers::x7;
static constexpr GPRReg regT8 = ARM64Registers::x8;
static constexpr GPRReg regT9 = ARM64Registers::x9;
static constexpr GPRReg regT10 = ARM64Registers::x10;
static constexpr GPRReg regT11 = ARM64Registers::x11;
static constexpr GPRReg regT12 = ARM64Registers::x12;
static constexpr GPRReg regT13 = ARM64Registers::x13;
static constexpr GPRReg regT14 = ARM64Registers::x14;
static constexpr GPRReg regT15 = ARM64Registers::x15;
static constexpr GPRReg regCS0 = ARM64Registers::x19; static constexpr GPRReg regCS1 = ARM64Registers::x20; static constexpr GPRReg regCS2 = ARM64Registers::x21; static constexpr GPRReg regCS3 = ARM64Registers::x22; static constexpr GPRReg regCS4 = ARM64Registers::x23; static constexpr GPRReg regCS5 = ARM64Registers::x24; static constexpr GPRReg regCS6 = ARM64Registers::x25; static constexpr GPRReg regCS7 = ARM64Registers::x26;
static constexpr GPRReg regCS8 = ARM64Registers::x27; static constexpr GPRReg regCS9 = ARM64Registers::x28; static constexpr GPRReg argumentGPR0 = ARM64Registers::x0; static constexpr GPRReg argumentGPR1 = ARM64Registers::x1; static constexpr GPRReg argumentGPR2 = ARM64Registers::x2; static constexpr GPRReg argumentGPR3 = ARM64Registers::x3; static constexpr GPRReg argumentGPR4 = ARM64Registers::x4; static constexpr GPRReg argumentGPR5 = ARM64Registers::x5; static constexpr GPRReg argumentGPR6 = ARM64Registers::x6; static constexpr GPRReg argumentGPR7 = ARM64Registers::x7; static constexpr GPRReg nonArgGPR0 = ARM64Registers::x8; static constexpr GPRReg nonArgGPR1 = ARM64Registers::x9; static constexpr GPRReg returnValueGPR = ARM64Registers::x0; static constexpr GPRReg returnValueGPR2 = ARM64Registers::x1; static constexpr GPRReg nonPreservedNonReturnGPR = ARM64Registers::x2;
static constexpr GPRReg nonPreservedNonArgumentGPR0 = ARM64Registers::x8;
static constexpr GPRReg nonPreservedNonArgumentGPR1 = ARM64Registers::x9;
static constexpr GPRReg patchpointScratchRegister = ARM64Registers::ip0;
COMPILE_ASSERT(ARM64Registers::q0 == 0, q0_is_0);
COMPILE_ASSERT(ARM64Registers::q1 == 1, q1_is_1);
COMPILE_ASSERT(ARM64Registers::q2 == 2, q2_is_2);
COMPILE_ASSERT(ARM64Registers::q3 == 3, q3_is_3);
COMPILE_ASSERT(ARM64Registers::q4 == 4, q4_is_4);
COMPILE_ASSERT(ARM64Registers::q5 == 5, q5_is_5);
COMPILE_ASSERT(ARM64Registers::q6 == 6, q6_is_6);
COMPILE_ASSERT(ARM64Registers::q7 == 7, q7_is_7);
COMPILE_ASSERT(ARM64Registers::q8 == 8, q8_is_8);
COMPILE_ASSERT(ARM64Registers::q9 == 9, q9_is_9);
COMPILE_ASSERT(ARM64Registers::q10 == 10, q10_is_10);
COMPILE_ASSERT(ARM64Registers::q11 == 11, q11_is_11);
COMPILE_ASSERT(ARM64Registers::q12 == 12, q12_is_12);
COMPILE_ASSERT(ARM64Registers::q13 == 13, q13_is_13);
COMPILE_ASSERT(ARM64Registers::q14 == 14, q14_is_14);
COMPILE_ASSERT(ARM64Registers::q15 == 15, q15_is_15);
static GPRReg toRegister(unsigned index)
{
return (GPRReg)index;
}
static unsigned toIndex(GPRReg reg)
{
if (reg > regT15)
return InvalidIndex;
return (unsigned)reg;
}
static GPRReg toArgumentRegister(unsigned index)
{
ASSERT(index < numberOfArgumentRegisters);
return toRegister(index);
}
static const char* debugName(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
return MacroAssembler::gprName(reg);
}
static const std::array<GPRReg, 4>& reservedRegisters()
{
static const std::array<GPRReg, 4> reservedRegisters { {
dataTempRegister,
memoryTempRegister,
numberTagRegister,
notCellMaskRegister,
} };
return reservedRegisters;
}
static constexpr unsigned InvalidIndex = 0xffffffff;
};
#endif // CPU(ARM64)
#if CPU(MIPS)
#define NUMBER_OF_ARGUMENT_REGISTERS 4u
#define NUMBER_OF_CALLEE_SAVES_REGISTERS 1u
class GPRInfo {
public:
typedef GPRReg RegisterType;
static constexpr unsigned numberOfRegisters = 11;
static constexpr unsigned numberOfArgumentRegisters = NUMBER_OF_ARGUMENT_REGISTERS;
static constexpr GPRReg regT0 = MIPSRegisters::v0;
static constexpr GPRReg regT1 = MIPSRegisters::v1;
static constexpr GPRReg regT2 = MIPSRegisters::t2;
static constexpr GPRReg regT3 = MIPSRegisters::t3;
static constexpr GPRReg regT4 = MIPSRegisters::t4;
static constexpr GPRReg regT5 = MIPSRegisters::t5;
static constexpr GPRReg regT6 = MIPSRegisters::t6;
static constexpr GPRReg regT7 = MIPSRegisters::a0;
static constexpr GPRReg regT8 = MIPSRegisters::a1;
static constexpr GPRReg regT9 = MIPSRegisters::a2;
static constexpr GPRReg regT10 = MIPSRegisters::a3;
static constexpr GPRReg callFrameRegister = MIPSRegisters::fp;
static constexpr GPRReg argumentGPR0 = MIPSRegisters::a0;
static constexpr GPRReg argumentGPR1 = MIPSRegisters::a1;
static constexpr GPRReg argumentGPR2 = MIPSRegisters::a2;
static constexpr GPRReg argumentGPR3 = MIPSRegisters::a3;
static constexpr GPRReg nonArgGPR0 = regT4;
static constexpr GPRReg returnValueGPR = regT0;
static constexpr GPRReg returnValueGPR2 = regT1;
static constexpr GPRReg nonPreservedNonReturnGPR = regT2;
static constexpr GPRReg regCS0 = MIPSRegisters::s0;
static GPRReg toRegister(unsigned index)
{
ASSERT(index < numberOfRegisters);
static const GPRReg registerForIndex[numberOfRegisters] = { regT0, regT1, regT2, regT3, regT4, regT5, regT6, regT7, regT8, regT9, regT10 };
return registerForIndex[index];
}
static GPRReg toArgumentRegister(unsigned index)
{
ASSERT(index < numberOfArgumentRegisters);
static const GPRReg registerForIndex[numberOfArgumentRegisters] = { argumentGPR0, argumentGPR1, argumentGPR2, argumentGPR3 };
return registerForIndex[index];
}
static unsigned toIndex(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
ASSERT(reg < 32);
static const unsigned indexForRegister[32] = {
InvalidIndex, InvalidIndex, 0, 1, 7, 8, 9, 10,
InvalidIndex, InvalidIndex, 2, 3, 4, 5, 6, InvalidIndex,
InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex,
InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex, InvalidIndex
};
unsigned result = indexForRegister[reg];
return result;
}
static const char* debugName(GPRReg reg)
{
ASSERT(reg != InvalidGPRReg);
return MacroAssembler::gprName(reg);
}
static constexpr unsigned InvalidIndex = 0xffffffff;
};
#endif // CPU(MIPS)
COMPILE_ASSERT(GPRInfo::regT0 == GPRInfo::returnValueGPR, regT0_must_equal_returnValueGPR);
#if USE(JSVALUE32_64)
COMPILE_ASSERT(GPRInfo::regT1 == GPRInfo::returnValueGPR2, regT1_must_equal_returnValueGPR2);
#endif
inline GPRReg extractResult(GPRReg result) { return result; }
#if USE(JSVALUE64)
inline GPRReg extractResult(JSValueRegs result) { return result.gpr(); }
#else
inline JSValueRegs extractResult(JSValueRegs result) { return result; }
#endif
inline NoResultTag extractResult(NoResultTag) { return NoResult; }
constexpr GPRInfo toInfoFromReg(GPRReg) { return GPRInfo(); }
#endif // ENABLE(ASSEMBLER)
}
namespace WTF {
inline void printInternal(PrintStream& out, JSC::GPRReg reg)
{
#if ENABLE(ASSEMBLER)
out.print("%", JSC::GPRInfo::debugName(reg));
#else
out.printf("%%r%d", reg);
#endif
}
}