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/*
* Copyright (C) 2018 Yusuke Suzuki <utatane.tea@gmail.com>.
*
* 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"
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
#if ENABLE(DISASSEMBLER) && USE(CAPSTONE)
#include "MacroAssemblerCodeRef.h"
#include "Options.h"
#include <capstone/capstone.h>
namespace JSC {
bool tryToDisassemble(const CodePtr<DisassemblyPtrTag>& codePtr, size_t size, void*, void*, const char* prefix, PrintStream& out)
{
csh handle;
cs_insn* instructions;
#if CPU(X86_64)
if (cs_open(CS_ARCH_X86, CS_MODE_64, &handle) != CS_ERR_OK)
return false;
#elif CPU(ARM_THUMB2)
if (cs_open(CS_ARCH_ARM, CS_MODE_THUMB, &handle) != CS_ERR_OK)
return false;
if (cs_option(handle, CS_OPT_SYNTAX, CS_OPT_SYNTAX_NOREGNAME) != CS_ERR_OK)
return false;
#elif CPU(ARM64)
if (cs_open(CS_ARCH_ARM64, CS_MODE_ARM, &handle) != CS_ERR_OK)
return false;
#else
return false;
#endif
#if CPU(X86_64)
if (cs_option(handle, CS_OPT_SYNTAX, CS_OPT_SYNTAX_ATT) != CS_ERR_OK) {
cs_close(&handle);
return false;
}
#endif
size_t count = cs_disasm(handle, codePtr.dataLocation<unsigned char*>(), size, codePtr.dataLocation<uintptr_t>(), 0, &instructions);
if (count > 0) {
for (size_t i = 0; i < count; ++i) {
auto& instruction = instructions[i];
out.printf("%s%#16llx: %s %s", prefix, static_cast<unsigned long long>(instruction.address), instruction.mnemonic, instruction.op_str);
if (auto str = AssemblyCommentRegistry::singleton().comment(reinterpret_cast<void *>(static_cast<uintptr_t>(instruction.address))))
out.printf("; %s\n", str->ascii().data());
else
out.printf("\n");
}
cs_free(instructions, count);
}
cs_close(&handle);
return true;
}
} // namespace JSC
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif // ENABLE(DISASSEMBLER) && USE(CAPSTONE)
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