mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-10-24 17:09:06 +00:00
4eab240e25
(The numbers need to be consistent with the actual usage, or else the stack gets corrupted.)
648 lines
14 KiB
C++
648 lines
14 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include "Common/Common.h"
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#include "Common/x64ABI.h"
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#include "Common/x64Emitter.h"
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using namespace Gen;
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// Shared code between Win64 and Unix64
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unsigned int XEmitter::ABI_GetAlignedFrameSize(unsigned int frameSize, bool noProlog) {
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// On platforms other than Windows 32-bit: At the beginning of a function,
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// the stack pointer is 4/8 bytes less than a multiple of 16; however, the
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// function prolog immediately subtracts an appropriate amount to align
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// it, so no alignment is required around a call.
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// In the functions generated by ThunkManager::ProtectFunction and some
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// others, we add the necessary subtraction (and 0x20 bytes shadow space
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// for Win64) into this rather than having a separate prolog.
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// On Windows 32-bit, the required alignment is only 4 bytes, so we just
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// ensure that the frame size isn't misaligned.
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#if _M_X86_64
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// expect frameSize == 0
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frameSize = noProlog ? 0x28 : 0;
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#elif defined(_WIN32)
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frameSize = (frameSize + 3) & -4;
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#else
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unsigned int existingAlignment = noProlog ? 0xc : 0;
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frameSize -= existingAlignment;
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frameSize = (frameSize + 15) & -16;
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frameSize += existingAlignment;
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#endif
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return frameSize;
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}
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void XEmitter::ABI_AlignStack(unsigned int frameSize, bool noProlog) {
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unsigned int fillSize =
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ABI_GetAlignedFrameSize(frameSize, noProlog) - frameSize;
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if (fillSize != 0) {
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#if _M_X86_64
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SUB(64, R(RSP), Imm8(fillSize));
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#else
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SUB(32, R(ESP), Imm8(fillSize));
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#endif
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}
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}
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void XEmitter::ABI_RestoreStack(unsigned int frameSize, bool noProlog) {
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unsigned int alignedSize = ABI_GetAlignedFrameSize(frameSize, noProlog);
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if (alignedSize != 0) {
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#if _M_X86_64
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ADD(64, R(RSP), Imm8(alignedSize));
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#else
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ADD(32, R(ESP), Imm8(alignedSize));
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#endif
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}
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}
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void XEmitter::ABI_PushRegistersAndAdjustStack(u32 mask, bool noProlog)
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{
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int regSize =
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#if _M_X86_64
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8;
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#else
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4;
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#endif
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int shadow = 0;
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#if defined(_WIN32) && _M_X86_64
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shadow = 0x20;
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#endif
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int count = 0;
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for (int r = 0; r < 16; r++)
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{
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if (mask & (1 << r))
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{
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PUSH((X64Reg) r);
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count++;
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}
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}
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int size = ((noProlog ? -regSize : 0) - (count * regSize)) & 0xf;
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for (int x = 0; x < 16; x++)
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{
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if (mask & (1 << (16 + x)))
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size += 16;
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}
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size += shadow;
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if (size)
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SUB(regSize * 8, R(RSP), size >= 0x80 ? Imm32(size) : Imm8(size));
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int offset = shadow;
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for (int x = 0; x < 16; x++)
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{
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if (mask & (1 << (16 + x)))
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{
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MOVUPD(MDisp(RSP, offset), (X64Reg) x);
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offset += 16;
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}
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}
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}
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void XEmitter::ABI_PopRegistersAndAdjustStack(u32 mask, bool noProlog)
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{
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int regSize =
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#if _M_X86_64
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8;
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#else
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4;
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#endif
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int size = 0;
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#if defined(_WIN32) && _M_X86_64
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size += 0x20;
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#endif
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for (int x = 0; x < 16; x++)
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{
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if (mask & (1 << (16 + x)))
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{
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MOVUPD((X64Reg) x, MDisp(RSP, size));
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size += 16;
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}
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}
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int count = 0;
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for (int r = 0; r < 16; r++)
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{
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if (mask & (1 << r))
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count++;
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}
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size += ((noProlog ? -regSize : 0) - (count * regSize)) & 0xf;
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if (size)
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ADD(regSize * 8, R(RSP), size >= 0x80 ? Imm32(size) : Imm8(size));
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for (int r = 15; r >= 0; r--)
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{
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if (mask & (1 << r))
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{
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POP((X64Reg) r);
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}
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}
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}
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#if _M_X86_32 // All32
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// Shared code between Win32 and Unix32
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void XEmitter::ABI_CallFunction(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(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(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(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(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_CallFunctionCP(void *func, u32 param1, void *param2) {
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ABI_AlignStack(2 * 4);
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PUSH(32, Imm32((u32)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(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(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(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_CallFunctionPC(void *func, void *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((u32)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_CallFunctionPPC(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(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(void *func, Gen::X64Reg reg1, Gen::X64Reg reg2, bool noProlog)
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{
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ABI_AlignStack(2 * 4, noProlog);
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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, noProlog);
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}
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void XEmitter::ABI_CallFunctionAC(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_CallFunctionA(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_PushAllCalleeSavedRegsAndAdjustStack() {
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PUSH(EBP);
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MOV(32, R(EBP), R(ESP));
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PUSH(EBX);
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PUSH(ESI);
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PUSH(EDI);
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SUB(32, R(ESP), Imm8(0xc));
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}
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void XEmitter::ABI_PopAllCalleeSavedRegsAndAdjustStack() {
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ADD(32, R(ESP), Imm8(0xc));
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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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#else //64bit
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// Common functions
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void XEmitter::ABI_CallFunction(void *func) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionC16(void *func, u16 param1) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionCC16(void *func, u32 param1, u16 param2) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionC(void *func, u32 param1) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionCC(void *func, u32 param1, u32 param2) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionCP(void *func, u32 param1, void *param2) {
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ABI_AlignStack(0);
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MOV(32, R(ABI_PARAM1), Imm32(param1));
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MOV(64, R(ABI_PARAM2), Imm64((u64)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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionCCC(void *func, u32 param1, u32 param2, u32 param3) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionCCP(void *func, u32 param1, u32 param2, void *param3) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionCCCP(void *func, u32 param1, u32 param2, u32 param3, void *param4) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionPC(void *func, void *param1, u32 param2) {
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ABI_AlignStack(0);
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MOV(64, R(ABI_PARAM1), Imm64((u64)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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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void XEmitter::ABI_CallFunctionPPC(void *func, void *param1, void *param2, u32 param3) {
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ABI_AlignStack(0);
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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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{
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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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}
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else
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{
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CALL(func);
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}
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ABI_RestoreStack(0);
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}
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// Pass a register as a parameter.
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void XEmitter::ABI_CallFunctionR(void *func, X64Reg reg1) {
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ABI_AlignStack(0);
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|
if (reg1 != ABI_PARAM1)
|
|
MOV(32, R(ABI_PARAM1), R(reg1));
|
|
u64 distance = u64(func) - (u64(code) + 5);
|
|
if (distance >= 0x0000000080000000ULL &&
|
|
distance < 0xFFFFFFFF80000000ULL)
|
|
{
|
|
// Far call
|
|
MOV(64, R(RAX), Imm64((u64)func));
|
|
CALLptr(R(RAX));
|
|
}
|
|
else
|
|
{
|
|
CALL(func);
|
|
}
|
|
ABI_RestoreStack(0);
|
|
}
|
|
|
|
// Pass two registers as parameters.
|
|
void XEmitter::ABI_CallFunctionRR(void *func, X64Reg reg1, X64Reg reg2, bool noProlog) {
|
|
ABI_AlignStack(0, noProlog);
|
|
if (reg2 != ABI_PARAM1)
|
|
{
|
|
if (reg1 != ABI_PARAM1)
|
|
MOV(64, R(ABI_PARAM1), R(reg1));
|
|
if (reg2 != ABI_PARAM2)
|
|
MOV(64, R(ABI_PARAM2), R(reg2));
|
|
}
|
|
else
|
|
{
|
|
if (reg2 != ABI_PARAM2)
|
|
MOV(64, R(ABI_PARAM2), R(reg2));
|
|
if (reg1 != ABI_PARAM1)
|
|
MOV(64, R(ABI_PARAM1), R(reg1));
|
|
}
|
|
u64 distance = u64(func) - (u64(code) + 5);
|
|
if (distance >= 0x0000000080000000ULL &&
|
|
distance < 0xFFFFFFFF80000000ULL)
|
|
{
|
|
// Far call
|
|
MOV(64, R(RAX), Imm64((u64)func));
|
|
CALLptr(R(RAX));
|
|
}
|
|
else
|
|
{
|
|
CALL(func);
|
|
}
|
|
ABI_RestoreStack(0, noProlog);
|
|
}
|
|
|
|
void XEmitter::ABI_CallFunctionAC(void *func, const Gen::OpArg &arg1, u32 param2)
|
|
{
|
|
ABI_AlignStack(0);
|
|
if (!arg1.IsSimpleReg(ABI_PARAM1))
|
|
MOV(32, R(ABI_PARAM1), arg1);
|
|
MOV(32, R(ABI_PARAM2), Imm32(param2));
|
|
u64 distance = u64(func) - (u64(code) + 5);
|
|
if (distance >= 0x0000000080000000ULL &&
|
|
distance < 0xFFFFFFFF80000000ULL)
|
|
{
|
|
// Far call
|
|
MOV(64, R(RAX), Imm64((u64)func));
|
|
CALLptr(R(RAX));
|
|
}
|
|
else
|
|
{
|
|
CALL(func);
|
|
}
|
|
ABI_RestoreStack(0);
|
|
}
|
|
|
|
void XEmitter::ABI_CallFunctionA(void *func, const Gen::OpArg &arg1)
|
|
{
|
|
ABI_AlignStack(0);
|
|
if (!arg1.IsSimpleReg(ABI_PARAM1))
|
|
MOV(32, R(ABI_PARAM1), arg1);
|
|
u64 distance = u64(func) - (u64(code) + 5);
|
|
if (distance >= 0x0000000080000000ULL &&
|
|
distance < 0xFFFFFFFF80000000ULL)
|
|
{
|
|
// Far call
|
|
MOV(64, R(RAX), Imm64((u64)func));
|
|
CALLptr(R(RAX));
|
|
}
|
|
else
|
|
{
|
|
CALL(func);
|
|
}
|
|
ABI_RestoreStack(0);
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
// Win64 Specific Code
|
|
|
|
void XEmitter::ABI_PushAllCalleeSavedRegsAndAdjustStack() {
|
|
//we only want to do this once
|
|
PUSH(RBP);
|
|
MOV(64, R(RBP), R(RSP));
|
|
PUSH(RBX);
|
|
PUSH(RSI);
|
|
PUSH(RDI);
|
|
PUSH(R12);
|
|
PUSH(R13);
|
|
PUSH(R14);
|
|
PUSH(R15);
|
|
SUB(64, R(RSP), Imm8(0x28));
|
|
//TODO: Also preserve XMM0-3?
|
|
}
|
|
|
|
void XEmitter::ABI_PopAllCalleeSavedRegsAndAdjustStack() {
|
|
ADD(64, R(RSP), Imm8(0x28));
|
|
POP(R15);
|
|
POP(R14);
|
|
POP(R13);
|
|
POP(R12);
|
|
POP(RDI);
|
|
POP(RSI);
|
|
POP(RBX);
|
|
POP(RBP);
|
|
}
|
|
|
|
#else
|
|
// Unix64 Specific Code
|
|
|
|
void XEmitter::ABI_PushAllCalleeSavedRegsAndAdjustStack() {
|
|
PUSH(RBP);
|
|
MOV(64, R(RBP), R(RSP));
|
|
PUSH(RBX);
|
|
PUSH(R12);
|
|
PUSH(R13);
|
|
PUSH(R14);
|
|
PUSH(R15);
|
|
SUB(64, R(RSP), Imm8(8));
|
|
}
|
|
|
|
void XEmitter::ABI_PopAllCalleeSavedRegsAndAdjustStack() {
|
|
ADD(64, R(RSP), Imm8(8));
|
|
POP(R15);
|
|
POP(R14);
|
|
POP(R13);
|
|
POP(R12);
|
|
POP(RBX);
|
|
POP(RBP);
|
|
}
|
|
|
|
#endif // WIN32
|
|
|
|
#endif // 32bit
|
|
|
|
|