1/*
2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "Disassembler.h"
28
29#if USE(UDIS86)
30
31#include "MacroAssemblerCodeRef.h"
32#include "udis86.h"
33
34namespace JSC {
35
36namespace {
37template <int> struct helper;
38template <> struct helper<4> {
39 static void hex(char *str, size_t len, uint64_t pc)
40 { snprintf(str, len, "0x%x", static_cast<uint32_t>(pc)); }
41};
42template <> struct helper<8> {
43 static void hex(char *str, size_t len, uint64_t pc)
44 { snprintf(str, len, "0x%llx", static_cast<unsigned long long>(pc)); }
45};
46inline void print(char *str, size_t len, uint64_t pc)
47{ helper<sizeof(void*)>::hex(str, len, pc); }
48}
49
50bool tryToDisassemble(const MacroAssemblerCodePtr& codePtr, size_t size, const char* prefix, PrintStream& out)
51{
52 ud_t disassembler;
53 ud_init(&disassembler);
54 ud_set_input_buffer(&disassembler, static_cast<unsigned char*>(codePtr.executableAddress()), size);
55#if CPU(X86_64)
56 ud_set_mode(&disassembler, 64);
57#else
58 ud_set_mode(&disassembler, 32);
59#endif
60 ud_set_pc(&disassembler, bitwise_cast<uintptr_t>(codePtr.executableAddress()));
61 ud_set_syntax(&disassembler, UD_SYN_ATT);
62
63 uint64_t currentPC = disassembler.pc;
64 while (ud_disassemble(&disassembler)) {
65 char pcString[20];
66 print(pcString, sizeof(pcString), currentPC);
67 out.printf("%s%16s: %s\n", prefix, pcString, ud_insn_asm(&disassembler));
68 currentPC = disassembler.pc;
69 }
70
71 return true;
72}
73
74} // namespace JSC
75
76#endif // USE(UDIS86)
77
78

source code of qtdeclarative/src/3rdparty/masm/disassembler/UDis86Disassembler.cpp