ARMLLVMDisassembler.cpp [plain text]
#include "config.h"
#include "Disassembler.h"
#if USE(ARM_LLVM_DISASSEMBLER)
#include "MacroAssemblerCodeRef.h"
#include <llvm-c/Disassembler.h>
#include <llvm-c/Target.h>
namespace JSC {
bool tryToDisassemble(const MacroAssemblerCodePtr& codePtr, size_t size, const char* prefix, PrintStream& out)
{
LLVMInitializeAllTargetInfos();
LLVMInitializeAllTargetMCs();
LLVMInitializeAllDisassemblers();
const char* triple = "armv7-unknown-linux-gnueabihf";
LLVMDisasmContextRef disassemblyContext = LLVMCreateDisasm(triple, 0, 0, 0, 0);
RELEASE_ASSERT(disassemblyContext);
char pcString[20];
char instructionString[100];
uint8_t* pc = static_cast<uint8_t*>(codePtr.executableAddress());
uint8_t* end = pc + size;
while (pc < end) {
snprintf(
pcString, sizeof(pcString), "0x%lx",
static_cast<unsigned long>(bitwise_cast<uintptr_t>(pc)));
size_t instructionSize = LLVMDisasmInstruction(
disassemblyContext, pc, end - pc, bitwise_cast<uintptr_t>(pc),
instructionString, sizeof(instructionString));
if (!instructionSize)
snprintf(instructionString, sizeof(instructionString), "unknown instruction");
out.printf("%s%16s: [0x%08lx] %s\n", prefix, pcString, *(reinterpret_cast<unsigned long*>(pc)), instructionString);
pc += 4;
}
LLVMDisasmDispose(disassemblyContext);
return true;
}
}
#endif // USE(ARM_LLVM_DISASSEMBLER)