//===- lib/System/Disassembler.cpp ------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file implements the necessary glue to call external disassembler // libraries. // //===----------------------------------------------------------------------===// #include "llvm/Config/config.h" #include "llvm/System/Disassembler.h" #include <cassert> #include <iomanip> #include <string> #include <sstream> #if USE_UDIS86 #include <udis86.h> #endif using namespace llvm; bool llvm::sys::hasDisassembler(void) { #if defined (__i386__) || defined (__amd64__) || defined (__x86_64__) // We have option to enable udis86 library. return true; #else return false; #endif } std::string llvm::sys::disassembleBuffer(uint8_t* start, size_t length, uint64_t pc) { std::stringstream res; #if defined (__i386__) || defined (__amd64__) || defined (__x86_64__) unsigned bits; # if defined(__i386__) bits = 32; # else bits = 64; # endif # if USE_UDIS86 ud_t ud_obj; ud_init(&ud_obj); ud_set_input_buffer(&ud_obj, start, length); ud_set_mode(&ud_obj, bits); ud_set_pc(&ud_obj, pc); ud_set_syntax(&ud_obj, UD_SYN_ATT); res << std::setbase(16) << std::setw(bits/4); while (ud_disassemble(&ud_obj)) { res << ud_insn_off(&ud_obj) << ":\t" << ud_insn_asm(&ud_obj) << "\n"; } # else res << "No disassembler available. See configure help for options.\n"; # endif #else res << "No disassembler available. See configure help for options.\n"; #endif return res.str(); }