mirror of
https://github.com/libretro/ppsspp.git
synced 2024-11-25 01:00:01 +00:00
633 lines
15 KiB
C++
633 lines
15 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "x64Emitter.h"
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#include "ABI.h"
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using namespace Gen;
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// Shared code between Win64 and Unix64
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// Sets up a __cdecl function.
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void XEmitter::ABI_EmitPrologue(int maxCallParams)
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{
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#ifdef _M_IX86
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// Don't really need to do anything
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#elif defined(_M_X64)
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#if _WIN32
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int stacksize = ((maxCallParams + 1) & ~1) * 8 + 8;
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// Set up a stack frame so that we can call functions
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// TODO: use maxCallParams
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SUB(64, R(RSP), Imm8(stacksize));
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#endif
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#else
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#error Arch not supported
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#endif
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}
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void XEmitter::ABI_EmitEpilogue(int maxCallParams)
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{
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#ifdef _M_IX86
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RET();
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#elif defined(_M_X64)
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#ifdef _WIN32
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int stacksize = ((maxCallParams+1)&~1)*8 + 8;
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ADD(64, R(RSP), Imm8(stacksize));
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#endif
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RET();
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#else
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#error Arch not supported
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#endif
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}
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#ifdef _M_IX86 // All32
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// Shared code between Win32 and Unix32
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void XEmitter::ABI_CallFunction(const void *func) {
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ABI_AlignStack(0);
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CALL(func);
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionC16(const void *func, u16 param1) {
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ABI_AlignStack(1 * 2);
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PUSH(16, Imm16(param1));
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CALL(func);
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ABI_RestoreStack(1 * 2);
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}
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void XEmitter::ABI_CallFunctionCC16(const void *func, u32 param1, u16 param2) {
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ABI_AlignStack(1 * 2 + 1 * 4);
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PUSH(16, Imm16(param2));
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PUSH(32, Imm32(param1));
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CALL(func);
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ABI_RestoreStack(1 * 2 + 1 * 4);
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}
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void XEmitter::ABI_CallFunctionC(const void *func, u32 param1) {
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ABI_AlignStack(1 * 4);
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PUSH(32, Imm32(param1));
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CALL(func);
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ABI_RestoreStack(1 * 4);
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}
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void XEmitter::ABI_CallFunctionCC(const void *func, u32 param1, u32 param2) {
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ABI_AlignStack(2 * 4);
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PUSH(32, Imm32(param2));
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PUSH(32, Imm32(param1));
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CALL(func);
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ABI_RestoreStack(2 * 4);
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}
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void XEmitter::ABI_CallFunctionCCC(const void *func, u32 param1, u32 param2, u32 param3) {
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ABI_AlignStack(3 * 4);
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PUSH(32, Imm32(param3));
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PUSH(32, Imm32(param2));
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PUSH(32, Imm32(param1));
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CALL(func);
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ABI_RestoreStack(3 * 4);
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}
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void XEmitter::ABI_CallFunctionCCP(const void *func, u32 param1, u32 param2, void *param3) {
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ABI_AlignStack(3 * 4);
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PUSH(32, Imm32((u32)param3));
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PUSH(32, Imm32(param2));
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PUSH(32, Imm32(param1));
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CALL(func);
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ABI_RestoreStack(3 * 4);
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}
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void XEmitter::ABI_CallFunctionCCCP(const void *func, u32 param1, u32 param2,u32 param3, void *param4) {
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ABI_AlignStack(4 * 4);
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PUSH(32, Imm32((u32)param4));
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PUSH(32, Imm32(param3));
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PUSH(32, Imm32(param2));
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PUSH(32, Imm32(param1));
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CALL(func);
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ABI_RestoreStack(4 * 4);
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}
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void XEmitter::ABI_CallFunctionP(const void *func, void *param1) {
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ABI_AlignStack(1 * 4);
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PUSH(32, Imm32((u32)param1));
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CALL(func);
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ABI_RestoreStack(1 * 4);
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}
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void XEmitter::ABI_CallFunctionPPC(const void *func, void *param1, void *param2, u32 param3) {
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ABI_AlignStack(3 * 4);
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PUSH(32, Imm32(param3));
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PUSH(32, Imm32((u32)param2));
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PUSH(32, Imm32((u32)param1));
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CALL(func);
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ABI_RestoreStack(3 * 4);
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}
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// Pass a register as a parameter.
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void XEmitter::ABI_CallFunctionR(const void *func, X64Reg reg1) {
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ABI_AlignStack(1 * 4);
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PUSH(32, R(reg1));
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CALL(func);
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ABI_RestoreStack(1 * 4);
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}
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// Pass two registers as parameters.
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void XEmitter::ABI_CallFunctionRR(const void *func, Gen::X64Reg reg1, Gen::X64Reg reg2)
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{
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ABI_AlignStack(2 * 4);
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PUSH(32, R(reg2));
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PUSH(32, R(reg1));
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CALL(func);
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ABI_RestoreStack(2 * 4);
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}
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void XEmitter::ABI_CallFunctionAC(const void *func, const Gen::OpArg &arg1, u32 param2)
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{
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ABI_AlignStack(2 * 4);
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PUSH(32, Imm32(param2));
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PUSH(32, arg1);
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CALL(func);
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ABI_RestoreStack(2 * 4);
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}
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void XEmitter::ABI_CallFunctionACC(const void *func, const Gen::OpArg &arg1, u32 param2, u32 param3)
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{
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ABI_AlignStack(3 * 4);
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PUSH(32, Imm32(param3));
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PUSH(32, Imm32(param2));
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PUSH(32, arg1);
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CALL(func);
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ABI_RestoreStack(3 * 4);
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}
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void XEmitter::ABI_CallFunctionA(const void *func, const Gen::OpArg &arg1)
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{
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ABI_AlignStack(1 * 4);
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PUSH(32, arg1);
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CALL(func);
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ABI_RestoreStack(1 * 4);
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}
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void XEmitter::ABI_CallFunctionAA(const void *func, const Gen::OpArg &arg1, const Gen::OpArg &arg2)
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{
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ABI_AlignStack(2 * 4);
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PUSH(32, arg2);
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PUSH(32, arg1);
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CALL(func);
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ABI_RestoreStack(2 * 4);
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}
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void XEmitter::ABI_PushAllCalleeSavedRegsAndAdjustStack() {
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// Note: 4 * 4 = 16 bytes, so alignment is preserved.
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PUSH(EBP);
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PUSH(EBX);
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PUSH(ESI);
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PUSH(EDI);
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}
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void XEmitter::ABI_PopAllCalleeSavedRegsAndAdjustStack() {
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POP(EDI);
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POP(ESI);
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POP(EBX);
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POP(EBP);
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}
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unsigned int XEmitter::ABI_GetAlignedFrameSize(unsigned int frameSize) {
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frameSize += 4; // reserve space for return address
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unsigned int alignedSize =
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#ifdef __GNUC__
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(frameSize + 15) & -16;
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#else
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(frameSize + 3) & -4;
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#endif
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return alignedSize;
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}
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void XEmitter::ABI_AlignStack(unsigned int frameSize) {
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// Mac OS X requires the stack to be 16-byte aligned before every call.
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// Linux requires the stack to be 16-byte aligned before calls that put SSE
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// vectors on the stack, but since we do not keep track of which calls do that,
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// it is effectively every call as well.
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// Windows binaries compiled with MSVC do not have such a restriction*, but I
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// expect that GCC on Windows acts the same as GCC on Linux in this respect.
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// It would be nice if someone could verify this.
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// *However, the MSVC optimizing compiler assumes a 4-byte-aligned stack at times.
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unsigned int fillSize =
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ABI_GetAlignedFrameSize(frameSize) - (frameSize + 4);
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if (fillSize != 0) {
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SUB(32, R(ESP), Imm8(fillSize));
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}
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}
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void XEmitter::ABI_RestoreStack(unsigned int frameSize) {
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unsigned int alignedSize = ABI_GetAlignedFrameSize(frameSize);
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alignedSize -= 4; // return address is POPped at end of call
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if (alignedSize != 0) {
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ADD(32, R(ESP), Imm8(alignedSize));
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}
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}
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#else //64bit
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// Common functions
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void XEmitter::ABI_CallFunction(const void *func) {
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionC16(const void *func, u16 param1) {
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MOV(32, R(ABI_PARAM1), Imm32((u32)param1));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionCC16(const void *func, u32 param1, u16 param2) {
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MOV(32, R(ABI_PARAM1), Imm32(param1));
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MOV(32, R(ABI_PARAM2), Imm32((u32)param2));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionC(const void *func, u32 param1) {
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MOV(32, R(ABI_PARAM1), Imm32(param1));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionCC(const void *func, u32 param1, u32 param2) {
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MOV(32, R(ABI_PARAM1), Imm32(param1));
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MOV(32, R(ABI_PARAM2), Imm32(param2));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionCCC(const void *func, u32 param1, u32 param2, u32 param3) {
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MOV(32, R(ABI_PARAM1), Imm32(param1));
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MOV(32, R(ABI_PARAM2), Imm32(param2));
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MOV(32, R(ABI_PARAM3), Imm32(param3));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionCCP(const void *func, u32 param1, u32 param2, void *param3) {
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MOV(32, R(ABI_PARAM1), Imm32(param1));
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MOV(32, R(ABI_PARAM2), Imm32(param2));
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MOV(64, R(ABI_PARAM3), Imm64((u64)param3));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionCCCP(const void *func, u32 param1, u32 param2, u32 param3, void *param4) {
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MOV(32, R(ABI_PARAM1), Imm32(param1));
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MOV(32, R(ABI_PARAM2), Imm32(param2));
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MOV(32, R(ABI_PARAM3), Imm32(param3));
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MOV(64, R(ABI_PARAM4), Imm64((u64)param4));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionP(const void *func, void *param1) {
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MOV(64, R(ABI_PARAM1), Imm64((u64)param1));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionPPC(const void *func, void *param1, void *param2, u32 param3) {
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MOV(64, R(ABI_PARAM1), Imm64((u64)param1));
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MOV(64, R(ABI_PARAM2), Imm64((u64)param2));
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MOV(32, R(ABI_PARAM3), Imm32(param3));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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// Pass a register as a parameter.
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void XEmitter::ABI_CallFunctionR(const void *func, X64Reg reg1) {
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if (reg1 != ABI_PARAM1)
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MOV(32, R(ABI_PARAM1), R(reg1));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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// Pass two registers as parameters.
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void XEmitter::ABI_CallFunctionRR(const void *func, X64Reg reg1, X64Reg reg2) {
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if (reg2 != ABI_PARAM1) {
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if (reg1 != ABI_PARAM1)
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MOV(64, R(ABI_PARAM1), R(reg1));
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if (reg2 != ABI_PARAM2)
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MOV(64, R(ABI_PARAM2), R(reg2));
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} else {
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if (reg2 != ABI_PARAM2)
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MOV(64, R(ABI_PARAM2), R(reg2));
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if (reg1 != ABI_PARAM1)
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MOV(64, R(ABI_PARAM1), R(reg1));
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}
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionAC(const void *func, const Gen::OpArg &arg1, u32 param2)
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{
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if (!arg1.IsSimpleReg(ABI_PARAM1))
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MOV(32, R(ABI_PARAM1), arg1);
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MOV(32, R(ABI_PARAM2), Imm32(param2));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionACC(const void *func, const Gen::OpArg &arg1, u32 param2, u32 param3)
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{
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MOV(32, R(ABI_PARAM1), arg1);
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MOV(32, R(ABI_PARAM2), Imm32(param2));
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MOV(64, R(ABI_PARAM3), Imm64(param3));
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionA(const void *func, const Gen::OpArg &arg1)
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{
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if (!arg1.IsSimpleReg(ABI_PARAM1))
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MOV(32, R(ABI_PARAM1), arg1);
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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void XEmitter::ABI_CallFunctionAA(const void *func, const Gen::OpArg &arg1, const Gen::OpArg &arg2)
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{
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if (!arg1.IsSimpleReg(ABI_PARAM1))
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MOV(32, R(ABI_PARAM1), arg1);
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if (!arg2.IsSimpleReg(ABI_PARAM2))
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MOV(32, R(ABI_PARAM2), arg2);
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u64 distance = u64(func) - (u64(code) + 5);
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if (distance >= 0x0000000080000000ULL
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&& distance < 0xFFFFFFFF80000000ULL) {
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// Far call
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MOV(64, R(RAX), Imm64((u64)func));
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CALLptr(R(RAX));
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} else {
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CALL(func);
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}
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}
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unsigned int XEmitter::ABI_GetAlignedFrameSize(unsigned int frameSize) {
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return frameSize;
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}
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#ifdef _WIN32
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// The Windows x64 ABI requires XMM6 - XMM15 to be callee saved. 10 regs.
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// But, not saving XMM4 and XMM5 breaks things in VS 2010, even though they are volatile regs.
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// Let's just save all 16.
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const int XMM_STACK_SPACE = 16 * 16;
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// Win64 Specific Code
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void XEmitter::ABI_PushAllCalleeSavedRegsAndAdjustStack() {
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//we only want to do this once
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PUSH(RBX);
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PUSH(RSI);
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PUSH(RDI);
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PUSH(RBP);
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PUSH(R12);
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PUSH(R13);
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PUSH(R14);
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PUSH(R15);
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ABI_AlignStack(0);
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// Do this after aligning, beacuse before it's offset by 8.
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SUB(64, R(RSP), Imm32(XMM_STACK_SPACE));
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for (int i = 0; i < 16; ++i)
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MOVAPS(MDisp(RSP, i * 16), (X64Reg)(XMM0 + i));
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}
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void XEmitter::ABI_PopAllCalleeSavedRegsAndAdjustStack() {
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for (int i = 0; i < 16; ++i)
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MOVAPS((X64Reg)(XMM0 + i), MDisp(RSP, i * 16));
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ADD(64, R(RSP), Imm32(XMM_STACK_SPACE));
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ABI_RestoreStack(0);
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POP(R15);
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POP(R14);
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POP(R13);
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POP(R12);
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POP(RBP);
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POP(RDI);
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POP(RSI);
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POP(RBX);
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}
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// Win64 Specific Code
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void XEmitter::ABI_PushAllCallerSavedRegsAndAdjustStack() {
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PUSH(RCX);
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PUSH(RDX);
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PUSH(RSI);
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PUSH(RDI);
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PUSH(R8);
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PUSH(R9);
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PUSH(R10);
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PUSH(R11);
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// TODO: Callers preserve XMM4-5 (XMM0-3 are args.)
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ABI_AlignStack(0);
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}
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void XEmitter::ABI_PopAllCallerSavedRegsAndAdjustStack() {
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ABI_RestoreStack(0);
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POP(R11);
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POP(R10);
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POP(R9);
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POP(R8);
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POP(RDI);
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POP(RSI);
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POP(RDX);
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POP(RCX);
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}
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void XEmitter::ABI_AlignStack(unsigned int /*frameSize*/) {
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SUB(64, R(RSP), Imm8(0x28));
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}
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void XEmitter::ABI_RestoreStack(unsigned int /*frameSize*/) {
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ADD(64, R(RSP), Imm8(0x28));
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}
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#else
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// Unix64 Specific Code
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void XEmitter::ABI_PushAllCalleeSavedRegsAndAdjustStack() {
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PUSH(RBX);
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PUSH(RBP);
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PUSH(R12);
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PUSH(R13);
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PUSH(R14);
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PUSH(R15);
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PUSH(R15); //just to align stack. duped push/pop doesn't hurt.
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// TODO: XMM?
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}
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void XEmitter::ABI_PopAllCalleeSavedRegsAndAdjustStack() {
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POP(R15);
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POP(R15);
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POP(R14);
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POP(R13);
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POP(R12);
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POP(RBP);
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POP(RBX);
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}
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void XEmitter::ABI_PushAllCallerSavedRegsAndAdjustStack() {
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PUSH(RCX);
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PUSH(RDX);
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PUSH(RSI);
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PUSH(RDI);
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PUSH(R8);
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PUSH(R9);
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PUSH(R10);
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PUSH(R11);
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PUSH(R11);
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}
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void XEmitter::ABI_PopAllCallerSavedRegsAndAdjustStack() {
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POP(R11);
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POP(R11);
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POP(R10);
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POP(R9);
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POP(R8);
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POP(RDI);
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POP(RSI);
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POP(RDX);
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POP(RCX);
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}
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void XEmitter::ABI_AlignStack(unsigned int /*frameSize*/) {
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SUB(64, R(RSP), Imm8(0x08));
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}
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void XEmitter::ABI_RestoreStack(unsigned int /*frameSize*/) {
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ADD(64, R(RSP), Imm8(0x08));
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}
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#endif // WIN32
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#endif // 32bit
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