blob: 15db1bdfe7fe78e21d4da7efd54a4a79a2e5542a [file] [log] [blame]
/*
* Copyright (C) 2012-2018 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 "UDis86Disassembler.h"
#if USE(UDIS86)
#include "MacroAssemblerCodeRef.h"
#include "udis86.h"
namespace JSC {
bool tryToDisassembleWithUDis86(const MacroAssemblerCodePtr<DisassemblyPtrTag>& codePtr, size_t size, const char* prefix, PrintStream& out)
{
ud_t disassembler;
ud_init(&disassembler);
ud_set_input_buffer(&disassembler, codePtr.untaggedExecutableAddress<unsigned char*>(), size);
#if CPU(X86_64)
ud_set_mode(&disassembler, 64);
#else
ud_set_mode(&disassembler, 32);
#endif
ud_set_pc(&disassembler, codePtr.untaggedExecutableAddress<uintptr_t>());
ud_set_syntax(&disassembler, UD_SYN_ATT);
uint64_t currentPC = disassembler.pc;
while (ud_disassemble(&disassembler)) {
char pcString[20];
snprintf(pcString, sizeof(pcString), "0x%" PRIxPTR, static_cast<uintptr_t>(currentPC));
out.printf("%s%16s: %s\n", prefix, pcString, ud_insn_asm(&disassembler));
currentPC = disassembler.pc;
}
return true;
}
} // namespace JSC
#endif // USE(UDIS86)