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/***************************************************************************************************
Zyan Disassembler Library (Zydis)
Original Author : Florian Bernd, Joel Hoener
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
***************************************************************************************************/
/**
* @file
* Demonstrates disassembling using the decoder and formatter API.
*
* Compared to the disassemble API, they are a bit more complicated to use, but provide much more
* control about the decoding and formatting process.
*/
#include <stdio.h>
#include <inttypes.h>
#include <Zydis/Zydis.h>
int main(void)
{
ZyanU8 data[] =
{
0x51, 0x8D, 0x45, 0xFF, 0x50, 0xFF, 0x75, 0x0C, 0xFF, 0x75,
0x08, 0xFF, 0x15, 0xA0, 0xA5, 0x48, 0x76, 0x85, 0xC0, 0x0F,
0x88, 0xFC, 0xDA, 0x02, 0x00
};
// Initialize decoder context
ZydisDecoder decoder;
ZydisDecoderInit(&decoder, ZYDIS_MACHINE_MODE_LONG_64, ZYDIS_STACK_WIDTH_64);
// Initialize formatter. Only required when you actually plan to do instruction
// formatting ("disassembling"), like we do here
ZydisFormatter formatter;
ZydisFormatterInit(&formatter, ZYDIS_FORMATTER_STYLE_INTEL);
// Loop over the instructions in our buffer.
// The runtime-address (instruction pointer) is chosen arbitrary here in order to better
// visualize relative addressing
ZyanU64 runtime_address = 0x007FFFFFFF400000;
ZyanUSize offset = 0;
const ZyanUSize length = sizeof(data);
ZydisDecodedInstruction instruction;
ZydisDecodedOperand operands[ZYDIS_MAX_OPERAND_COUNT];
while (ZYAN_SUCCESS(ZydisDecoderDecodeFull(&decoder, data + offset, length - offset,
&instruction, operands)))
{
// Print current instruction pointer.
printf("%016" PRIX64 " ", runtime_address);
// Format & print the binary instruction structure to human-readable format
char buffer[256];
ZydisFormatterFormatInstruction(&formatter, &instruction, operands,
instruction.operand_count_visible, buffer, sizeof(buffer), runtime_address, ZYAN_NULL);
puts(buffer);
offset += instruction.length;
runtime_address += instruction.length;
}
return 0;
}
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