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Patch extrq (#943)

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* Use a singleton for instruction decoding

* Use singleton class

* Patch `EXTRQ`

* Fixup signal context functions

* Update CMakeLists.txt

---------

Co-authored-by: georgemoralis <giorgosmrls@gmail.com>
This commit is contained in:
Paris Oplopoios 2024-09-23 19:19:52 +03:00 • committed by GitHub
parent 5a8e8f5936
commit 5799091044
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9 changed files with 371 additions and 67 deletions
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42
src/common/decoder.cpp Normal file
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// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <fmt/format.h>
#include "common/decoder.h"
namespace Common {
DecoderImpl::DecoderImpl() {
ZydisDecoderInit(&m_decoder, ZYDIS_MACHINE_MODE_LONG_64, ZYDIS_STACK_WIDTH_64);
ZydisFormatterInit(&m_formatter, ZYDIS_FORMATTER_STYLE_INTEL);
}
DecoderImpl::~DecoderImpl() = default;
void DecoderImpl::printInstruction(void* code, u64 address) {
ZydisDecodedInstruction instruction;
ZydisDecodedOperand operands[ZYDIS_MAX_OPERAND_COUNT_VISIBLE];
ZyanStatus status =
ZydisDecoderDecodeFull(&m_decoder, code, sizeof(code), &instruction, operands);
if (!ZYAN_SUCCESS(status)) {
fmt::print("decode instruction failed at {}\n", fmt::ptr(code));
} else {
printInst(instruction, operands, address);
}
}
void DecoderImpl::printInst(ZydisDecodedInstruction& inst, ZydisDecodedOperand* operands,
u64 address) {
const int bufLen = 256;
char szBuffer[bufLen];
ZydisFormatterFormatInstruction(&m_formatter, &inst, operands, inst.operand_count_visible,
szBuffer, sizeof(szBuffer), address, ZYAN_NULL);
fmt::print("instruction: {}\n", szBuffer);
}
ZyanStatus DecoderImpl::decodeInstruction(ZydisDecodedInstruction& inst,
ZydisDecodedOperand* operands, void* data, u64 size) {
return ZydisDecoderDecodeFull(&m_decoder, data, size, &inst, operands);
}
} // namespace Common