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Merge pull request #5132 from lioncash/xbyak-abi

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xbyak_abi: Avoid implicit sign conversions
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bunnei 2020-12-06 01:22:43 -08:00 committed by GitHub
commit 53a04d6b5d
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1 changed files with 10 additions and 10 deletions
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20
src/common/x64/xbyak_abi.h
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@ -11,25 +11,25 @@
namespace Common::X64 { namespace Common::X64 {
constexpr std::size_t RegToIndex(const Xbyak::Reg& reg) { constexpr size_t RegToIndex(const Xbyak::Reg& reg) {
using Kind = Xbyak::Reg::Kind; using Kind = Xbyak::Reg::Kind;
ASSERT_MSG((reg.getKind() & (Kind::REG | Kind::XMM)) != 0, ASSERT_MSG((reg.getKind() & (Kind::REG | Kind::XMM)) != 0,
"RegSet only support GPRs and XMM registers."); "RegSet only support GPRs and XMM registers.");
ASSERT_MSG(reg.getIdx() < 16, "RegSet only supports XXM0-15."); ASSERT_MSG(reg.getIdx() < 16, "RegSet only supports XXM0-15.");
return reg.getIdx() + (reg.getKind() == Kind::REG ? 0 : 16); return static_cast<size_t>(reg.getIdx()) + (reg.getKind() == Kind::REG ? 0 : 16);
} }
constexpr Xbyak::Reg64 IndexToReg64(std::size_t reg_index) { constexpr Xbyak::Reg64 IndexToReg64(size_t reg_index) {
ASSERT(reg_index < 16); ASSERT(reg_index < 16);
return Xbyak::Reg64(static_cast<int>(reg_index)); return Xbyak::Reg64(static_cast<int>(reg_index));
} }
constexpr Xbyak::Xmm IndexToXmm(std::size_t reg_index) { constexpr Xbyak::Xmm IndexToXmm(size_t reg_index) {
ASSERT(reg_index >= 16 && reg_index < 32); ASSERT(reg_index >= 16 && reg_index < 32);
return Xbyak::Xmm(static_cast<int>(reg_index - 16)); return Xbyak::Xmm(static_cast<int>(reg_index - 16));
} }
constexpr Xbyak::Reg IndexToReg(std::size_t reg_index) { constexpr Xbyak::Reg IndexToReg(size_t reg_index) {
if (reg_index < 16) { if (reg_index < 16) {
return IndexToReg64(reg_index); return IndexToReg64(reg_index);
} else { } else {
@ -182,7 +182,7 @@ inline size_t ABI_PushRegistersAndAdjustStack(Xbyak::CodeGenerator& code, std::b
size_t rsp_alignment, size_t needed_frame_size = 0) { size_t rsp_alignment, size_t needed_frame_size = 0) {
auto frame_info = ABI_CalculateFrameSize(regs, rsp_alignment, needed_frame_size); auto frame_info = ABI_CalculateFrameSize(regs, rsp_alignment, needed_frame_size);
for (std::size_t i = 0; i < regs.size(); ++i) { for (size_t i = 0; i < regs.size(); ++i) {
if (regs[i] && ABI_ALL_GPRS[i]) { if (regs[i] && ABI_ALL_GPRS[i]) {
code.push(IndexToReg64(i)); code.push(IndexToReg64(i));
} }
@ -192,7 +192,7 @@ inline size_t ABI_PushRegistersAndAdjustStack(Xbyak::CodeGenerator& code, std::b
code.sub(code.rsp, frame_info.subtraction); code.sub(code.rsp, frame_info.subtraction);
} }
for (std::size_t i = 0; i < regs.size(); ++i) { for (size_t i = 0; i < regs.size(); ++i) {
if (regs[i] && ABI_ALL_XMMS[i]) { if (regs[i] && ABI_ALL_XMMS[i]) {
code.movaps(code.xword[code.rsp + frame_info.xmm_offset], IndexToXmm(i)); code.movaps(code.xword[code.rsp + frame_info.xmm_offset], IndexToXmm(i));
frame_info.xmm_offset += 0x10; frame_info.xmm_offset += 0x10;
@ -206,7 +206,7 @@ inline void ABI_PopRegistersAndAdjustStack(Xbyak::CodeGenerator& code, std::bits
size_t rsp_alignment, size_t needed_frame_size = 0) { size_t rsp_alignment, size_t needed_frame_size = 0) {
auto frame_info = ABI_CalculateFrameSize(regs, rsp_alignment, needed_frame_size); auto frame_info = ABI_CalculateFrameSize(regs, rsp_alignment, needed_frame_size);
for (std::size_t i = 0; i < regs.size(); ++i) { for (size_t i = 0; i < regs.size(); ++i) {
if (regs[i] && ABI_ALL_XMMS[i]) { if (regs[i] && ABI_ALL_XMMS[i]) {
code.movaps(IndexToXmm(i), code.xword[code.rsp + frame_info.xmm_offset]); code.movaps(IndexToXmm(i), code.xword[code.rsp + frame_info.xmm_offset]);
frame_info.xmm_offset += 0x10; frame_info.xmm_offset += 0x10;
@ -218,8 +218,8 @@ inline void ABI_PopRegistersAndAdjustStack(Xbyak::CodeGenerator& code, std::bits
} }
// GPRs need to be popped in reverse order // GPRs need to be popped in reverse order
for (std::size_t j = 0; j < regs.size(); ++j) { for (size_t j = 0; j < regs.size(); ++j) {
const std::size_t i = regs.size() - j - 1; const size_t i = regs.size() - j - 1;
if (regs[i] && ABI_ALL_GPRS[i]) { if (regs[i] && ABI_ALL_GPRS[i]) {
code.pop(IndexToReg64(i)); code.pop(IndexToReg64(i));
} }