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++ /*
++ * Copyright (C) 2012 Apple Inc. All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in the
++ * documentation and/or other materials provided with the distribution.
++ *
++ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
++ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
++ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
++ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
++ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
++ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
++ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
++ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
++ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ */
++
++ #include "config.h"
++ #include "Disassembler.h"
++
++ #if USE(UDIS86)
++
++ #include "MacroAssemblerCodeRef.h"
++ #include "udis86.h"
++
++ namespace JSC {
++
++ namespace {
++ template <int> struct helper;
++ template <> struct helper<4> {
++ static void hex(char *str, size_t len, uint64_t pc)
++ { snprintf(str, len, "0x%x", static_cast<uint32_t>(pc)); }
++ };
++ template <> struct helper<8> {
++ static void hex(char *str, size_t len, uint64_t pc)
++ { snprintf(str, len, "0x%llx", static_cast<unsigned long long>(pc)); }
++ };
++ inline void print(char *str, size_t len, uint64_t pc)
++ { helper<sizeof(void*)>::hex(str, len, pc); }
++ }
++
++ bool tryToDisassemble(const MacroAssemblerCodePtr& codePtr, size_t size, const char* prefix, PrintStream& out)
++ {
++ ud_t disassembler;
++ ud_init(&disassembler);
++ ud_set_input_buffer(&disassembler, static_cast<unsigned char*>(codePtr.executableAddress()), size);
++ #if CPU(X86_64)
++ ud_set_mode(&disassembler, 64);
++ #else
++ ud_set_mode(&disassembler, 32);
++ #endif
++ ud_set_pc(&disassembler, bitwise_cast<uintptr_t>(codePtr.executableAddress()));
++ ud_set_syntax(&disassembler, UD_SYN_ATT);
++
++ uint64_t currentPC = disassembler.pc;
++ while (ud_disassemble(&disassembler)) {
++ char pcString[20];
++ print(pcString, sizeof(pcString), currentPC);
++ out.printf("%s%16s: %s\n", prefix, pcString, ud_insn_asm(&disassembler));
++ currentPC = disassembler.pc;
++ }
++
++ return true;
++ }
++
++ } // namespace JSC
++
++ #endif // USE(UDIS86)
++