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A64: Add Disassemble method

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This commit is contained in:
MerryMage 2018-01-28 17:56:26 +00:00
parent cc0eb18a0b
commit bafb39ebc5
8 changed files with 98 additions and 32 deletions
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34
src/backend_x64/a32_interface.cpp
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@ -19,6 +19,7 @@
#include "backend_x64/block_of_code.h"
#include "backend_x64/callback.h"
#include "backend_x64/devirtualize.h"
#include "backend_x64/disassemble_x64.h"
#include "backend_x64/jitstate_info.h"
#include "common/assert.h"
#include "common/common_types.h"
@ -73,38 +74,7 @@ struct Jit::Impl {
std::string Disassemble(const IR::LocationDescriptor& descriptor) {
auto block = GetBasicBlock(descriptor);
std::string result = fmt::format("address: {}\nsize: {} bytes\n", block.entrypoint, block.size);
#ifdef DYNARMIC_USE_LLVM
LLVMInitializeX86TargetInfo();
LLVMInitializeX86TargetMC();
LLVMInitializeX86Disassembler();
LLVMDisasmContextRef llvm_ctx = LLVMCreateDisasm("x86_64", nullptr, 0, nullptr, nullptr);
LLVMSetDisasmOptions(llvm_ctx, LLVMDisassembler_Option_AsmPrinterVariant);
const u8* pos = static_cast<const u8*>(block.entrypoint);
const u8* end = pos + block.size;
size_t remaining = block.size;
while (pos < end) {
char buffer[80];
size_t inst_size = LLVMDisasmInstruction(llvm_ctx, const_cast<u8*>(pos), remaining, (u64)pos, buffer, sizeof(buffer));
ASSERT(inst_size);
for (const u8* i = pos; i < pos + inst_size; i++)
result += fmt::format("{:02x} ", *i);
for (size_t i = inst_size; i < 10; i++)
result += " ";
result += buffer;
result += '\n';
pos += inst_size;
remaining -= inst_size;
}
LLVMDisasmDispose(llvm_ctx);
#else
result.append("(recompile with DYNARMIC_USE_LLVM=ON to disassemble the generated x86_64 code)\n");
#endif
result += DisassembleX64(block.entrypoint, reinterpret_cast<const char*>(block.entrypoint) + block.size);
return result;
}