497 lines
9.8 KiB
C++
497 lines
9.8 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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{
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frameSize = noProlog ? 0x28 : 0;
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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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{
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unsigned int fillSize = ABI_GetAlignedFrameSize(frameSize, noProlog) - frameSize;
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if (fillSize != 0)
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{
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SUB(64, R(RSP), Imm8(fillSize));
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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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{
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unsigned int alignedSize = ABI_GetAlignedFrameSize(frameSize, noProlog);
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if (alignedSize != 0)
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{
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ADD(64, R(RSP), Imm8(alignedSize));
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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 = 8;
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int shadow = 0;
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#if defined(_WIN32)
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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 = 8;
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int size = 0;
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#if defined(_WIN32)
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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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// Common functions
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void XEmitter::ABI_CallFunction(void *func)
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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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ABI_AlignStack(0);
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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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{
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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 two registers as parameters.
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void XEmitter::ABI_CallFunctionRR(void *func, X64Reg reg1, X64Reg reg2, bool noProlog)
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{
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ABI_AlignStack(0, noProlog);
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MOVTwo(64, ABI_PARAM1, reg1, ABI_PARAM2, reg2, ABI_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, noProlog);
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}
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void XEmitter::MOVTwo(int bits, Gen::X64Reg dst1, Gen::X64Reg src1, Gen::X64Reg dst2, Gen::X64Reg src2, X64Reg temp)
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{
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if (dst1 == src2 && dst2 == src1)
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{
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// need a temporary
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MOV(bits, R(temp), R(src1));
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src1 = temp;
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}
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if (src2 != dst1)
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{
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if (dst1 != src1)
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MOV(bits, R(dst1), R(src1));
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if (dst2 != src2)
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MOV(bits, R(dst2), R(src2));
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}
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else
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{
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if (dst2 != src2)
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MOV(bits, R(dst2), R(src2));
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if (dst1 != src1)
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MOV(bits, R(dst1), R(src1));
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}
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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(0);
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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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{
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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_CallFunctionA(void *func, const Gen::OpArg &arg1)
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{
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ABI_AlignStack(0);
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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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{
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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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#ifdef _WIN32
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// Win64 Specific Code
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void XEmitter::ABI_PushAllCalleeSavedRegsAndAdjustStack()
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{
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//we only want to do this once
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PUSH(RBP);
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MOV(64, R(RBP), R(RSP));
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PUSH(RBX);
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PUSH(RSI);
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PUSH(RDI);
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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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SUB(64, R(RSP), Imm8(0x28));
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//TODO: Also preserve XMM0-3?
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}
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void XEmitter::ABI_PopAllCalleeSavedRegsAndAdjustStack()
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{
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ADD(64, R(RSP), Imm8(0x28));
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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(RDI);
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POP(RSI);
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POP(RBX);
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POP(RBP);
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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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{
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PUSH(RBP);
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MOV(64, R(RBP), R(RSP));
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PUSH(RBX);
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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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SUB(64, R(RSP), Imm8(8));
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}
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void XEmitter::ABI_PopAllCalleeSavedRegsAndAdjustStack()
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{
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ADD(64, R(RSP), Imm8(8));
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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(RBX);
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POP(RBP);
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}
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#endif // WIN32
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