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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)
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