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This commit is contained in:
offtkp 2025-02-25 00:22:56 +02:00
parent 16e175af5d
commit 4e23005dc6
1 changed files with 6 additions and 4 deletions
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10
src/core/cpu_patches.cpp
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@ -259,6 +259,7 @@ static void GenerateANDN(const ZydisDecodedOperand* operands, Xbyak::CodeGenerat
const auto dst = ZydisToXbyakRegisterOperand(operands[0]);
const auto src1 = ZydisToXbyakRegisterOperand(operands[1]);
const auto src2 = ZydisToXbyakOperand(operands[2]);
ASSERT_MSG(dst.getIdx() != rsp.getIdx(), "ANDN overwriting the stack pointer");
// Check if src2 is a memory operand or a register different to dst.
// In those cases, we don't need to use a temporary register and are free to modify dst.
@ -297,6 +298,7 @@ static void GenerateBEXTR(const ZydisDecodedOperand* operands, Xbyak::CodeGenera
const auto dst = ZydisToXbyakRegisterOperand(operands[0]);
const auto src = ZydisToXbyakOperand(operands[1]);
const auto start_len = ZydisToXbyakRegisterOperand(operands[2]);
ASSERT_MSG(dst.getIdx() != rsp.getIdx(), "BEXTR overwriting the stack pointer");
const Xbyak::Reg32e shift(Xbyak::Operand::RCX, static_cast<int>(start_len.getBit()));
const auto scratch1 =
@ -334,6 +336,7 @@ static void GenerateBEXTR(const ZydisDecodedOperand* operands, Xbyak::CodeGenera
static void GenerateBLSI(const ZydisDecodedOperand* operands, Xbyak::CodeGenerator& c) {
const auto dst = ZydisToXbyakRegisterOperand(operands[0]);
const auto src = ZydisToXbyakOperand(operands[1]);
ASSERT_MSG(dst.getIdx() != rsp.getIdx(), "BLSI overwriting the stack pointer");
const auto scratch = AllocateScratchRegister({&dst, src.get()}, dst.getBit());
@ -363,6 +366,7 @@ static void GenerateBLSI(const ZydisDecodedOperand* operands, Xbyak::CodeGenerat
static void GenerateBLSMSK(const ZydisDecodedOperand* operands, Xbyak::CodeGenerator& c) {
const auto dst = ZydisToXbyakRegisterOperand(operands[0]);
const auto src = ZydisToXbyakOperand(operands[1]);
ASSERT_MSG(dst.getIdx() != rsp.getIdx(), "BLSMSK overwriting the stack pointer");
const auto scratch = AllocateScratchRegister({&dst, src.get()}, dst.getBit());
@ -394,6 +398,7 @@ static void GenerateBLSMSK(const ZydisDecodedOperand* operands, Xbyak::CodeGener
static void GenerateTZCNT(const ZydisDecodedOperand* operands, Xbyak::CodeGenerator& c) {
const auto dst = ZydisToXbyakRegisterOperand(operands[0]);
const auto src = ZydisToXbyakOperand(operands[1]);
ASSERT_MSG(dst.getIdx() != rsp.getIdx(), "TZCNT overwriting the stack pointer");
Xbyak::Label src_zero, end;
@ -420,6 +425,7 @@ static void GenerateTZCNT(const ZydisDecodedOperand* operands, Xbyak::CodeGenera
static void GenerateBLSR(const ZydisDecodedOperand* operands, Xbyak::CodeGenerator& c) {
const auto dst = ZydisToXbyakRegisterOperand(operands[0]);
const auto src = ZydisToXbyakOperand(operands[1]);
ASSERT_MSG(dst.getIdx() != rsp.getIdx(), "BLSR overwriting the stack pointer");
const auto scratch = AllocateScratchRegister({&dst, src.get()}, dst.getBit());
@ -641,12 +647,8 @@ static bool FilterNoSSE4a(const ZydisDecodedOperand*) {
}
static bool FilterNoBMI1(const ZydisDecodedOperand*) {
#ifdef __APPLE__
return FilterRosetta2Only(nullptr);
#else
Cpu cpu;
return !cpu.has(Cpu::tBMI1);
#endif
}
static void GenerateEXTRQ(const ZydisDecodedOperand* operands, Xbyak::CodeGenerator& c) {