mirror of
https://github.com/yuzu-mirror/yuzu.git
synced 2024-09-20 14:19:58 +01:00
267 lines
7.4 KiB
C++
267 lines
7.4 KiB
C++
|
// Copyright 2016 Citra Emulator Project
|
||
|
|
// Licensed under GPLv2 or any later version
|
||
|
|
// Refer to the license.txt file included.
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <bitset>
|
||
|
|
#include <initializer_list>
|
||
|
|
#include <xbyak.h>
|
||
|
|
#include "common/assert.h"
|
||
|
|
|
||
|
|
namespace Common::X64 {
|
||
|
|
|
||
|
|
inline int RegToIndex(const Xbyak::Reg& reg) {
|
||
|
|
using Kind = Xbyak::Reg::Kind;
|
||
|
|
ASSERT_MSG((reg.getKind() & (Kind::REG | Kind::XMM)) != 0,
|
||
|
|
"RegSet only support GPRs and XMM registers.");
|
||
|
|
ASSERT_MSG(reg.getIdx() < 16, "RegSet only supports XXM0-15.");
|
||
|
|
return reg.getIdx() + (reg.getKind() == Kind::REG ? 0 : 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline Xbyak::Reg64 IndexToReg64(int reg_index) {
|
||
|
|
ASSERT(reg_index < 16);
|
||
|
|
return Xbyak::Reg64(reg_index);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline Xbyak::Xmm IndexToXmm(int reg_index) {
|
||
|
|
ASSERT(reg_index >= 16 && reg_index < 32);
|
||
|
|
return Xbyak::Xmm(reg_index - 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline Xbyak::Reg IndexToReg(int reg_index) {
|
||
|
|
if (reg_index < 16) {
|
||
|
|
return IndexToReg64(reg_index);
|
||
|
|
} else {
|
||
|
|
return IndexToXmm(reg_index);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
inline std::bitset<32> BuildRegSet(std::initializer_list<Xbyak::Reg> regs) {
|
||
|
|
std::bitset<32> bits;
|
||
|
|
for (const Xbyak::Reg& reg : regs) {
|
||
|
|
bits[RegToIndex(reg)] = true;
|
||
|
|
}
|
||
|
|
return bits;
|
||
|
|
}
|
||
|
|
|
||
|
|
const std::bitset<32> ABI_ALL_GPRS(0x0000FFFF);
|
||
|
|
const std::bitset<32> ABI_ALL_XMMS(0xFFFF0000);
|
||
|
|
|
||
|
|
#ifdef _WIN32
|
||
|
|
|
||
|
|
// Microsoft x64 ABI
|
||
|
|
const Xbyak::Reg ABI_RETURN = Xbyak::util::rax;
|
||
|
|
const Xbyak::Reg ABI_PARAM1 = Xbyak::util::rcx;
|
||
|
|
const Xbyak::Reg ABI_PARAM2 = Xbyak::util::rdx;
|
||
|
|
const Xbyak::Reg ABI_PARAM3 = Xbyak::util::r8;
|
||
|
|
const Xbyak::Reg ABI_PARAM4 = Xbyak::util::r9;
|
||
|
|
|
||
|
|
const std::bitset<32> ABI_ALL_CALLER_SAVED = BuildRegSet({
|
||
|
|
// GPRs
|
||
|
|
Xbyak::util::rcx,
|
||
|
|
Xbyak::util::rdx,
|
||
|
|
Xbyak::util::r8,
|
||
|
|
Xbyak::util::r9,
|
||
|
|
Xbyak::util::r10,
|
||
|
|
Xbyak::util::r11,
|
||
|
|
// XMMs
|
||
|
|
Xbyak::util::xmm0,
|
||
|
|
Xbyak::util::xmm1,
|
||
|
|
Xbyak::util::xmm2,
|
||
|
|
Xbyak::util::xmm3,
|
||
|
|
Xbyak::util::xmm4,
|
||
|
|
Xbyak::util::xmm5,
|
||
|
|
});
|
||
|
|
|
||
|
|
const std::bitset<32> ABI_ALL_CALLEE_SAVED = BuildRegSet({
|
||
|
|
// GPRs
|
||
|
|
Xbyak::util::rbx,
|
||
|
|
Xbyak::util::rsi,
|
||
|
|
Xbyak::util::rdi,
|
||
|
|
Xbyak::util::rbp,
|
||
|
|
Xbyak::util::r12,
|
||
|
|
Xbyak::util::r13,
|
||
|
|
Xbyak::util::r14,
|
||
|
|
Xbyak::util::r15,
|
||
|
|
// XMMs
|
||
|
|
Xbyak::util::xmm6,
|
||
|
|
Xbyak::util::xmm7,
|
||
|
|
Xbyak::util::xmm8,
|
||
|
|
Xbyak::util::xmm9,
|
||
|
|
Xbyak::util::xmm10,
|
||
|
|
Xbyak::util::xmm11,
|
||
|
|
Xbyak::util::xmm12,
|
||
|
|
Xbyak::util::xmm13,
|
||
|
|
Xbyak::util::xmm14,
|
||
|
|
Xbyak::util::xmm15,
|
||
|
|
});
|
||
|
|
|
||
|
|
constexpr size_t ABI_SHADOW_SPACE = 0x20;
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
// System V x86-64 ABI
|
||
|
|
const Xbyak::Reg ABI_RETURN = Xbyak::util::rax;
|
||
|
|
const Xbyak::Reg ABI_PARAM1 = Xbyak::util::rdi;
|
||
|
|
const Xbyak::Reg ABI_PARAM2 = Xbyak::util::rsi;
|
||
|
|
const Xbyak::Reg ABI_PARAM3 = Xbyak::util::rdx;
|
||
|
|
const Xbyak::Reg ABI_PARAM4 = Xbyak::util::rcx;
|
||
|
|
|
||
|
|
const std::bitset<32> ABI_ALL_CALLER_SAVED = BuildRegSet({
|
||
|
|
// GPRs
|
||
|
|
Xbyak::util::rcx,
|
||
|
|
Xbyak::util::rdx,
|
||
|
|
Xbyak::util::rdi,
|
||
|
|
Xbyak::util::rsi,
|
||
|
|
Xbyak::util::r8,
|
||
|
|
Xbyak::util::r9,
|
||
|
|
Xbyak::util::r10,
|
||
|
|
Xbyak::util::r11,
|
||
|
|
// XMMs
|
||
|
|
Xbyak::util::xmm0,
|
||
|
|
Xbyak::util::xmm1,
|
||
|
|
Xbyak::util::xmm2,
|
||
|
|
Xbyak::util::xmm3,
|
||
|
|
Xbyak::util::xmm4,
|
||
|
|
Xbyak::util::xmm5,
|
||
|
|
Xbyak::util::xmm6,
|
||
|
|
Xbyak::util::xmm7,
|
||
|
|
Xbyak::util::xmm8,
|
||
|
|
Xbyak::util::xmm9,
|
||
|
|
Xbyak::util::xmm10,
|
||
|
|
Xbyak::util::xmm11,
|
||
|
|
Xbyak::util::xmm12,
|
||
|
|
Xbyak::util::xmm13,
|
||
|
|
Xbyak::util::xmm14,
|
||
|
|
Xbyak::util::xmm15,
|
||
|
|
});
|
||
|
|
|
||
|
|
const std::bitset<32> ABI_ALL_CALLEE_SAVED = BuildRegSet({
|
||
|
|
// GPRs
|
||
|
|
Xbyak::util::rbx,
|
||
|
|
Xbyak::util::rbp,
|
||
|
|
Xbyak::util::r12,
|
||
|
|
Xbyak::util::r13,
|
||
|
|
Xbyak::util::r14,
|
||
|
|
Xbyak::util::r15,
|
||
|
|
});
|
||
|
|
|
||
|
|
constexpr size_t ABI_SHADOW_SPACE = 0;
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
inline void ABI_CalculateFrameSize(std::bitset<32> regs, size_t rsp_alignment,
|
||
|
|
size_t needed_frame_size, s32* out_subtraction,
|
||
|
|
s32* out_xmm_offset) {
|
||
|
|
const auto count = (regs & ABI_ALL_GPRS).count();
|
||
|
|
rsp_alignment -= count * 8;
|
||
|
|
size_t subtraction = 0;
|
||
|
|
const auto xmm_count = (regs & ABI_ALL_XMMS).count();
|
||
|
|
if (xmm_count) {
|
||
|
|
// If we have any XMMs to save, we must align the stack here.
|
||
|
|
subtraction = rsp_alignment & 0xF;
|
||
|
|
}
|
||
|
|
subtraction += 0x10 * xmm_count;
|
||
|
|
size_t xmm_base_subtraction = subtraction;
|
||
|
|
subtraction += needed_frame_size;
|
||
|
|
subtraction += ABI_SHADOW_SPACE;
|
||
|
|
// Final alignment.
|
||
|
|
rsp_alignment -= subtraction;
|
||
|
|
subtraction += rsp_alignment & 0xF;
|
||
|
|
|
||
|
|
*out_subtraction = (s32)subtraction;
|
||
|
|
*out_xmm_offset = (s32)(subtraction - xmm_base_subtraction);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline size_t ABI_PushRegistersAndAdjustStack(Xbyak::CodeGenerator& code, std::bitset<32> regs,
|
||
|
|
size_t rsp_alignment, size_t needed_frame_size = 0) {
|
||
|
|
s32 subtraction, xmm_offset;
|
||
|
|
ABI_CalculateFrameSize(regs, rsp_alignment, needed_frame_size, &subtraction, &xmm_offset);
|
||
|
|
for (std::size_t i = 0; i < regs.size(); ++i) {
|
||
|
|
if (regs[i] && ABI_ALL_GPRS[i]) {
|
||
|
|
code.push(IndexToReg64(static_cast<int>(i)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (subtraction != 0) {
|
||
|
|
code.sub(code.rsp, subtraction);
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i = 0; i < regs.count(); i++) {
|
||
|
|
if (regs.test(i) & ABI_ALL_GPRS.test(i)) {
|
||
|
|
code.push(IndexToReg64(i));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for (std::size_t i = 0; i < regs.size(); ++i) {
|
||
|
|
if (regs[i] && ABI_ALL_XMMS[i]) {
|
||
|
|
code.movaps(code.xword[code.rsp + xmm_offset], IndexToXmm(static_cast<int>(i)));
|
||
|
|
xmm_offset += 0x10;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ABI_SHADOW_SPACE;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void ABI_PopRegistersAndAdjustStack(Xbyak::CodeGenerator& code, std::bitset<32> regs,
|
||
|
|
size_t rsp_alignment, size_t needed_frame_size = 0) {
|
||
|
|
s32 subtraction, xmm_offset;
|
||
|
|
ABI_CalculateFrameSize(regs, rsp_alignment, needed_frame_size, &subtraction, &xmm_offset);
|
||
|
|
|
||
|
|
for (std::size_t i = 0; i < regs.size(); ++i) {
|
||
|
|
if (regs[i] && ABI_ALL_XMMS[i]) {
|
||
|
|
code.movaps(IndexToXmm(static_cast<int>(i)), code.xword[code.rsp + xmm_offset]);
|
||
|
|
xmm_offset += 0x10;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (subtraction != 0) {
|
||
|
|
code.add(code.rsp, subtraction);
|
||
|
|
}
|
||
|
|
|
||
|
|
// GPRs need to be popped in reverse order
|
||
|
|
for (int i = 15; i >= 0; i--) {
|
||
|
|
if (regs[i]) {
|
||
|
|
code.pop(IndexToReg64(i));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
inline size_t ABI_PushRegistersAndAdjustStackGPS(Xbyak::CodeGenerator& code, std::bitset<32> regs,
|
||
|
|
size_t rsp_alignment,
|
||
|
|
size_t needed_frame_size = 0) {
|
||
|
|
s32 subtraction, xmm_offset;
|
||
|
|
ABI_CalculateFrameSize(regs, rsp_alignment, needed_frame_size, &subtraction, &xmm_offset);
|
||
|
|
|
||
|
|
for (std::size_t i = 0; i < regs.size(); ++i) {
|
||
|
|
if (regs[i] && ABI_ALL_GPRS[i]) {
|
||
|
|
code.push(IndexToReg64(static_cast<int>(i)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (subtraction != 0) {
|
||
|
|
code.sub(code.rsp, subtraction);
|
||
|
|
}
|
||
|
|
|
||
|
|
return ABI_SHADOW_SPACE;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void ABI_PopRegistersAndAdjustStackGPS(Xbyak::CodeGenerator& code, std::bitset<32> regs,
|
||
|
|
size_t rsp_alignment, size_t needed_frame_size = 0) {
|
||
|
|
s32 subtraction, xmm_offset;
|
||
|
|
ABI_CalculateFrameSize(regs, rsp_alignment, needed_frame_size, &subtraction, &xmm_offset);
|
||
|
|
|
||
|
|
if (subtraction != 0) {
|
||
|
|
code.add(code.rsp, subtraction);
|
||
|
|
}
|
||
|
|
|
||
|
|
// GPRs need to be popped in reverse order
|
||
|
|
for (int i = 15; i >= 0; i--) {
|
||
|
|
if (regs[i]) {
|
||
|
|
code.pop(IndexToReg64(i));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace Common::X64
|