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1714 lines (1504 loc) · 61 KB
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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CCallHelpers_h
#define CCallHelpers_h
#if ENABLE(JIT)
#include "AssemblyHelpers.h"
#include "GPRInfo.h"
namespace JSC {
class CCallHelpers : public AssemblyHelpers {
public:
CCallHelpers(VM* vm, CodeBlock* codeBlock = 0)
: AssemblyHelpers(vm, codeBlock)
{
}
// These methods used to sort arguments into the correct registers.
// On X86 we use cdecl calling conventions, which pass all arguments on the
// stack. On other architectures we may need to sort values into the
// correct registers.
#if !NUMBER_OF_ARGUMENT_REGISTERS
unsigned m_callArgumentOffset;
void resetCallArguments() { m_callArgumentOffset = 0; }
// These methods are using internally to implement the callOperation methods.
void addCallArgument(GPRReg value)
{
poke(value, m_callArgumentOffset++);
}
void addCallArgument(TrustedImm32 imm)
{
poke(imm, m_callArgumentOffset++);
}
void addCallArgument(TrustedImmPtr pointer)
{
poke(pointer, m_callArgumentOffset++);
}
void addCallArgument(FPRReg value)
{
storeDouble(value, Address(stackPointerRegister, m_callArgumentOffset * sizeof(void*)));
m_callArgumentOffset += sizeof(double) / sizeof(void*);
}
ALWAYS_INLINE void setupArguments(FPRReg arg1)
{
resetCallArguments();
addCallArgument(arg1);
}
ALWAYS_INLINE void setupArguments(FPRReg arg1, FPRReg arg2)
{
resetCallArguments();
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArguments(GPRReg arg1)
{
resetCallArguments();
addCallArgument(arg1);
}
ALWAYS_INLINE void setupArguments(GPRReg arg1, GPRReg arg2)
{
resetCallArguments();
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArguments(TrustedImmPtr arg1, GPRReg arg2)
{
resetCallArguments();
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArguments(GPRReg arg1, GPRReg arg2, GPRReg arg3)
{
resetCallArguments();
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArguments(GPRReg arg1, GPRReg arg2, TrustedImmPtr arg3, TrustedImmPtr arg4)
{
resetCallArguments();
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArguments(GPRReg arg1, GPRReg arg2, TrustedImmPtr arg3, TrustedImm32 arg4, GPRReg arg5)
{
resetCallArguments();
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArguments(GPRReg arg1, GPRReg arg2, TrustedImmPtr arg3, TrustedImm32 arg4, GPRReg arg5, GPRReg arg6)
{
resetCallArguments();
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
addCallArgument(arg6);
}
ALWAYS_INLINE void setupArguments(TrustedImmPtr arg1)
{
resetCallArguments();
addCallArgument(arg1);
}
ALWAYS_INLINE void setupArgumentsExecState()
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImm32 arg1)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImmPtr arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImm32 arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImm32 arg1, GPRReg arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImm32 arg1, TrustedImm32 arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, TrustedImmPtr arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, TrustedImm32 arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, TrustedImm32 arg2, TrustedImm32 arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImm32 arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImmPtr arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImm32 arg2, GPRReg arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImm32 arg2, TrustedImmPtr arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, GPRReg arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, TrustedImm32 arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, TrustedImmPtr arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, TrustedImmPtr arg2, TrustedImm32 arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, TrustedImmPtr arg2, TrustedImmPtr arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImmPtr arg2, TrustedImmPtr arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImmPtr arg2, TrustedImm32 arg3, GPRReg arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, TrustedImm32 arg2, GPRReg arg3, TrustedImmPtr arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImm32 arg3, TrustedImmPtr arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, TrustedImm32 arg3, GPRReg arg4, GPRReg arg5)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImmPtr arg2, TrustedImm32 arg3, GPRReg arg4, GPRReg arg5)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, GPRReg arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, TrustedImm32 arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImm32 arg1, TrustedImmPtr arg2, GPRReg arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, TrustedImmPtr arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImm32 arg3, TrustedImm32 arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImm32 arg3, GPRReg arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImm32 arg1, TrustedImm32 arg2, GPRReg arg3, GPRReg arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, GPRReg arg3, TrustedImm32 arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, GPRReg arg3, TrustedImm32 arg4, TrustedImmPtr arg5)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, GPRReg arg3, GPRReg arg4, GPRReg arg5, TrustedImmPtr arg6)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
addCallArgument(arg6);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, GPRReg arg3, GPRReg arg4, TrustedImm32 arg5, TrustedImmPtr arg6)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
addCallArgument(arg6);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, GPRReg arg3, TrustedImmPtr arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImmPtr arg1, GPRReg arg2, TrustedImm32 arg3, TrustedImmPtr arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, TrustedImmPtr arg2, GPRReg arg3, GPRReg arg4)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, GPRReg arg4, GPRReg arg5)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImm32 arg3, GPRReg arg4, GPRReg arg5)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, GPRReg arg4, TrustedImmPtr arg5)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, TrustedImm32 arg4, TrustedImmPtr arg5)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, GPRReg arg4, TrustedImm32 arg5)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, GPRReg arg4, GPRReg arg5, GPRReg arg6)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
addCallArgument(arg6);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, GPRReg arg3, GPRReg arg4, GPRReg arg5, TrustedImm32 arg6)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
addCallArgument(arg4);
addCallArgument(arg5);
addCallArgument(arg6);
}
ALWAYS_INLINE void setupArgumentsWithExecState(FPRReg arg1, GPRReg arg2)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, FPRReg arg3)
{
resetCallArguments();
addCallArgument(GPRInfo::callFrameRegister);
addCallArgument(arg1);
addCallArgument(arg2);
addCallArgument(arg3);
}
#endif // !NUMBER_OF_ARGUMENT_REGISTERS
// These methods are suitable for any calling convention that provides for
// at least 4 argument registers, e.g. X86_64, ARMv7.
#if NUMBER_OF_ARGUMENT_REGISTERS >= 4
template<GPRReg destA, GPRReg destB>
void setupTwoStubArgsGPR(GPRReg srcA, GPRReg srcB)
{
// Assuming that srcA != srcB, there are 7 interesting states the registers may be in:
// (1) both are already in arg regs, the right way around.
// (2) both are already in arg regs, the wrong way around.
// (3) neither are currently in arg registers.
// (4) srcA in in its correct reg.
// (5) srcA in in the incorrect reg.
// (6) srcB in in its correct reg.
// (7) srcB in in the incorrect reg.
//
// The trivial approach is to simply emit two moves, to put srcA in place then srcB in
// place (the MacroAssembler will omit redundant moves). This apporach will be safe in
// cases 1, 3, 4, 5, 6, and in cases where srcA==srcB. The two problem cases are 2
// (requires a swap) and 7 (must move srcB first, to avoid trampling.)
if (srcB != destA) {
// Handle the easy cases - two simple moves.
move(srcA, destA);
move(srcB, destB);
} else if (srcA != destB) {
// Handle the non-swap case - just put srcB in place first.
move(srcB, destB);
move(srcA, destA);
} else
swap(destA, destB);
}
template<GPRReg destA, GPRReg destB, GPRReg destC>
void setupThreeStubArgsGPR(GPRReg srcA, GPRReg srcB, GPRReg srcC)
{
// If neither of srcB/srcC are in our way, then we can move srcA into place.
// Then we can use setupTwoStubArgs to fix srcB/srcC.
if (srcB != destA && srcC != destA) {
move(srcA, destA);
setupTwoStubArgsGPR<destB, destC>(srcB, srcC);
return;
}
// If neither of srcA/srcC are in our way, then we can move srcB into place.
// Then we can use setupTwoStubArgs to fix srcA/srcC.
if (srcA != destB && srcC != destB) {
move(srcB, destB);
setupTwoStubArgsGPR<destA, destC>(srcA, srcC);
return;
}
// If neither of srcA/srcB are in our way, then we can move srcC into place.
// Then we can use setupTwoStubArgs to fix srcA/srcB.
if (srcA != destC && srcB != destC) {
move(srcC, destC);
setupTwoStubArgsGPR<destA, destB>(srcA, srcB);
return;
}
// If we get here, we haven't been able to move any of srcA/srcB/srcC.
// Since all three are blocked, then all three must already be in the argument register.
// But are they in the right ones?
// First, ensure srcA is in place.
if (srcA != destA) {
swap(srcA, destA);
// If srcA wasn't in argumentGPR1, one of srcB/srcC must be.
ASSERT(srcB == destA || srcC == destA);
// If srcB was in argumentGPR1 it no longer is (due to the swap).
// Otherwise srcC must have been. Mark him as moved.
if (srcB == destA)
srcB = srcA;
else
srcC = srcA;
}
// Either srcB & srcC need swapping, or we're all done.
ASSERT((srcB == destB || srcC == destC)
|| (srcB == destC || srcC == destB));
if (srcB != destB)
swap(destB, destC);
}
#if CPU(X86_64) || CPU(ARM64)
template<FPRReg destA, FPRReg destB>
void setupTwoStubArgsFPR(FPRReg srcA, FPRReg srcB)
{
// Assuming that srcA != srcB, there are 7 interesting states the registers may be in:
// (1) both are already in arg regs, the right way around.
// (2) both are already in arg regs, the wrong way around.
// (3) neither are currently in arg registers.
// (4) srcA in in its correct reg.
// (5) srcA in in the incorrect reg.
// (6) srcB in in its correct reg.
// (7) srcB in in the incorrect reg.
//
// The trivial approach is to simply emit two moves, to put srcA in place then srcB in
// place (the MacroAssembler will omit redundant moves). This apporach will be safe in
// cases 1, 3, 4, 5, 6, and in cases where srcA==srcB. The two problem cases are 2
// (requires a swap) and 7 (must move srcB first, to avoid trampling.)
if (srcB != destA) {
// Handle the easy cases - two simple moves.
moveDouble(srcA, destA);
moveDouble(srcB, destB);
return;
}
if (srcA != destB) {
// Handle the non-swap case - just put srcB in place first.
moveDouble(srcB, destB);
moveDouble(srcA, destA);
return;
}
ASSERT(srcB == destA && srcA == destB);
// Need to swap; pick a temporary register.
FPRReg temp;
if (destA != FPRInfo::argumentFPR3 && destA != FPRInfo::argumentFPR3)
temp = FPRInfo::argumentFPR3;
else if (destA != FPRInfo::argumentFPR2 && destA != FPRInfo::argumentFPR2)
temp = FPRInfo::argumentFPR2;
else {
ASSERT(destA != FPRInfo::argumentFPR1 && destA != FPRInfo::argumentFPR1);
temp = FPRInfo::argumentFPR1;
}
moveDouble(destA, temp);
moveDouble(destB, destA);
moveDouble(temp, destB);
}
#endif
void setupStubArguments(GPRReg arg1, GPRReg arg2)
{
setupTwoStubArgsGPR<GPRInfo::argumentGPR1, GPRInfo::argumentGPR2>(arg1, arg2);
}
void setupStubArguments(GPRReg arg1, GPRReg arg2, GPRReg arg3)
{
setupThreeStubArgsGPR<GPRInfo::argumentGPR1, GPRInfo::argumentGPR2, GPRInfo::argumentGPR3>(arg1, arg2, arg3);
}
#if CPU(MIPS) || (OS(WINDOWS) && CPU(X86_64))
#define POKE_ARGUMENT_OFFSET 4
#else
#define POKE_ARGUMENT_OFFSET 0
#endif
#if CPU(X86_64) || CPU(ARM64)
ALWAYS_INLINE void setupArguments(FPRReg arg1)
{
moveDouble(arg1, FPRInfo::argumentFPR0);
}
ALWAYS_INLINE void setupArguments(FPRReg arg1, FPRReg arg2)
{
setupTwoStubArgsFPR<FPRInfo::argumentFPR0, FPRInfo::argumentFPR1>(arg1, arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(FPRReg arg1, GPRReg arg2)
{
#if OS(WINDOWS) && CPU(X86_64)
// On Windows, arguments map to designated registers based on the argument positions, even when there are interlaced scalar and floating point arguments.
// See http://msdn.microsoft.com/en-us/library/zthk2dkh.aspx
moveDouble(arg1, FPRInfo::argumentFPR1);
move(arg2, GPRInfo::argumentGPR2);
#else
moveDouble(arg1, FPRInfo::argumentFPR0);
move(arg2, GPRInfo::argumentGPR1);
#endif
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, FPRReg arg3)
{
#if OS(WINDOWS) && CPU(X86_64)
// On Windows, arguments map to designated registers based on the argument positions, even when there are interlaced scalar and floating point arguments.
// See http://msdn.microsoft.com/en-us/library/zthk2dkh.aspx
moveDouble(arg3, FPRInfo::argumentFPR3);
#else
moveDouble(arg3, FPRInfo::argumentFPR0);
#endif
setupStubArguments(arg1, arg2);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
#elif CPU(ARM)
#if CPU(ARM_HARDFP)
ALWAYS_INLINE void setupArguments(FPRReg arg1)
{
moveDouble(arg1, FPRInfo::argumentFPR0);
}
ALWAYS_INLINE void setupArguments(FPRReg arg1, FPRReg arg2)
{
if (arg2 != FPRInfo::argumentFPR0) {
moveDouble(arg1, FPRInfo::argumentFPR0);
moveDouble(arg2, FPRInfo::argumentFPR1);
} else if (arg1 != FPRInfo::argumentFPR1) {
moveDouble(arg2, FPRInfo::argumentFPR1);
moveDouble(arg1, FPRInfo::argumentFPR0);
} else {
// Swap arg1, arg2.
moveDouble(FPRInfo::argumentFPR0, ARMRegisters::d2);
moveDouble(FPRInfo::argumentFPR1, FPRInfo::argumentFPR0);
moveDouble(ARMRegisters::d2, FPRInfo::argumentFPR1);
}
}
ALWAYS_INLINE void setupArgumentsWithExecState(FPRReg arg1, GPRReg arg2)
{
moveDouble(arg1, FPRInfo::argumentFPR0);
move(arg2, GPRInfo::argumentGPR1);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, FPRReg arg3)
{
moveDouble(arg3, FPRInfo::argumentFPR0);
setupStubArguments(arg1, arg2);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImm32, FPRReg arg2, GPRReg arg3)
{
moveDouble(arg2, FPRInfo::argumentFPR0);
move(arg3, GPRInfo::argumentGPR1);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImm32, FPRReg arg4)
{
moveDouble(arg4, FPRInfo::argumentFPR0);
setupStubArguments(arg1, arg2);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
#else
ALWAYS_INLINE void setupArguments(FPRReg arg1)
{
assembler().vmov(GPRInfo::argumentGPR0, GPRInfo::argumentGPR1, arg1);
}
ALWAYS_INLINE void setupArguments(FPRReg arg1, FPRReg arg2)
{
assembler().vmov(GPRInfo::argumentGPR0, GPRInfo::argumentGPR1, arg1);
assembler().vmov(GPRInfo::argumentGPR2, GPRInfo::argumentGPR3, arg2);
}
ALWAYS_INLINE void setupArgumentsWithExecState(FPRReg arg1, GPRReg arg2)
{
move(arg2, GPRInfo::argumentGPR3);
assembler().vmov(GPRInfo::argumentGPR1, GPRInfo::argumentGPR2, arg1);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, FPRReg arg3)
{
setupStubArguments(arg1, arg2);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
assembler().vmov(GPRInfo::argumentGPR3, GPRInfo::nonArgGPR0, arg3);
poke(GPRInfo::nonArgGPR0);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImm32 arg1, FPRReg arg2, GPRReg arg3)
{
poke(arg3, POKE_ARGUMENT_OFFSET);
move(arg1, GPRInfo::argumentGPR1);
assembler().vmov(GPRInfo::argumentGPR2, GPRInfo::argumentGPR3, arg2);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImm32 arg3, FPRReg arg4)
{
setupStubArguments(arg1, arg2);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
move(arg3, GPRInfo::argumentGPR3);
assembler().vmov(GPRInfo::nonArgGPR0, GPRInfo::nonArgGPR1, arg4);
poke(GPRInfo::nonArgGPR0, POKE_ARGUMENT_OFFSET);
poke(GPRInfo::nonArgGPR1, POKE_ARGUMENT_OFFSET + 1);
}
#endif // CPU(ARM_HARDFP)
#elif CPU(MIPS)
ALWAYS_INLINE void setupArguments(FPRReg arg1)
{
moveDouble(arg1, FPRInfo::argumentFPR0);
}
ALWAYS_INLINE void setupArguments(FPRReg arg1, FPRReg arg2)
{
if (arg2 != FPRInfo::argumentFPR0) {
moveDouble(arg1, FPRInfo::argumentFPR0);
moveDouble(arg2, FPRInfo::argumentFPR1);
} else if (arg1 != FPRInfo::argumentFPR1) {
moveDouble(arg2, FPRInfo::argumentFPR1);
moveDouble(arg1, FPRInfo::argumentFPR0);
} else {
// Swap arg1, arg2.
swapDouble(FPRInfo::argumentFPR0, FPRInfo::argumentFPR1);
}
}
ALWAYS_INLINE void setupArgumentsWithExecState(FPRReg arg1, GPRReg arg2)
{
assembler().vmov(GPRInfo::argumentGPR2, GPRInfo::argumentGPR3, arg1);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
poke(arg2, 4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, FPRReg arg3)
{
setupStubArguments(arg1, arg2);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
poke(arg3, 4);
}
ALWAYS_INLINE void setupArgumentsWithExecState(TrustedImm32 arg1, FPRReg arg2, GPRReg arg3)
{
setupArgumentsWithExecState(arg2, arg3);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, TrustedImm32 arg3, FPRReg arg4)
{
setupArgumentsWithExecState(arg1, arg2, arg4);
}
#elif CPU(SH4)
ALWAYS_INLINE void setupArguments(FPRReg arg1)
{
moveDouble(arg1, FPRInfo::argumentFPR0);
}
ALWAYS_INLINE void setupArguments(FPRReg arg1, FPRReg arg2)
{
if (arg2 != FPRInfo::argumentFPR0) {
moveDouble(arg1, FPRInfo::argumentFPR0);
moveDouble(arg2, FPRInfo::argumentFPR1);
} else if (arg1 != FPRInfo::argumentFPR1) {
moveDouble(arg2, FPRInfo::argumentFPR1);
moveDouble(arg1, FPRInfo::argumentFPR0);
} else
swapDouble(FPRInfo::argumentFPR0, FPRInfo::argumentFPR1);
}
ALWAYS_INLINE void setupArgumentsWithExecState(FPRReg arg1, GPRReg arg2)
{
moveDouble(arg1, FPRInfo::argumentFPR0);
move(arg2, GPRInfo::argumentGPR1);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
ALWAYS_INLINE void setupArgumentsWithExecState(GPRReg arg1, GPRReg arg2, FPRReg arg3)
{
moveDouble(arg3, FPRInfo::argumentFPR0);
setupStubArguments(arg1, arg2);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
}
#else
#error "JIT not supported on this platform."
#endif
ALWAYS_INLINE void setupArguments(GPRReg arg1)
{