llvm/lib/Support/Disassembler.cpp
Chandler Carruth d04a8d4b33 Use the new script to sort the includes of every file under lib.
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03 16:50:05 +00:00

75 lines
1.7 KiB
C++

//===- lib/Support/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/Support/Disassembler.h"
#include "llvm/Config/config.h"
#include <cassert>
#include <iomanip>
#include <sstream>
#include <string>
#if USE_UDIS86
#include <udis86.h>
#endif
using namespace llvm;
bool llvm::sys::hasDisassembler()
{
#if defined (__i386__) || defined (__amd64__) || defined (__x86_64__)
// We have option to enable udis86 library.
# if USE_UDIS86
return true;
#else
return false;
#endif
#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__)) \
&& USE_UDIS86
unsigned bits;
# if defined(__i386__)
bits = 32;
# else
bits = 64;
# endif
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
return res.str();
}