Source code
Revision control
Copy as Markdown
Other Tools
/***************************************************************************************************
Zyan Disassembler Library (Zydis)
Original Author : Florian Bernd
* 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
* Other utility functions.
*/
#ifndef ZYDIS_UTILS_H
#define ZYDIS_UTILS_H
#include "zydis/Zycore/Defines.h"
#include "zydis/Zydis/DecoderTypes.h"
#include "zydis/Zydis/Status.h"
#ifdef __cplusplus
extern "C" {
#endif
/* ============================================================================================== */
/* Exported functions */
/* ============================================================================================== */
/**
* @addtogroup utils Utils
* Miscellaneous utility functions. Address translation and other helpers.
* @{
*/
/* ---------------------------------------------------------------------------------------------- */
/* Address calculation */
/* ---------------------------------------------------------------------------------------------- */
// TODO: Provide a function that works in minimal-mode and does not require a operand parameter
/**
* Calculates the absolute address value for the given instruction operand.
*
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operand A pointer to the `ZydisDecodedOperand` struct.
* @param runtime_address The runtime address of the instruction.
* @param result_address A pointer to the memory that receives the absolute address.
*
* @return A zyan status code.
*
* You should use this function in the following cases:
* - `IMM` operands with relative address (e.g. `JMP`, `CALL`, ...)
* - `MEM` operands with `RIP`/`EIP`-relative address (e.g. `MOV RAX, [RIP+0x12345678]`)
* - `MEM` operands with absolute address (e.g. `MOV RAX, [0x12345678]`)
* - The displacement needs to get truncated and zero extended
*/
ZYDIS_EXPORT ZyanStatus ZydisCalcAbsoluteAddress(const ZydisDecodedInstruction* instruction,
const ZydisDecodedOperand* operand, ZyanU64 runtime_address, ZyanU64* result_address);
/**
* Calculates the absolute address value for the given instruction operand.
*
* @param instruction A pointer to the `ZydisDecodedInstruction` struct.
* @param operand A pointer to the `ZydisDecodedOperand` struct.
* @param runtime_address The runtime address of the instruction.
* @param register_context A pointer to the `ZydisRegisterContext` struct.
* @param result_address A pointer to the memory that receives the absolute target-address.
*
* @return A zyan status code.
*
* This function behaves like `ZydisCalcAbsoluteAddress` but takes an additional register-context
* argument to allow calculation of addresses depending on runtime register values.
*
* Note that `IP/EIP/RIP` from the register-context will be ignored in favor of the passed
* runtime-address.
*/
ZYDIS_EXPORT ZyanStatus ZydisCalcAbsoluteAddressEx(const ZydisDecodedInstruction* instruction,
const ZydisDecodedOperand* operand, ZyanU64 runtime_address,
const ZydisRegisterContext* register_context, ZyanU64* result_address);
/* ---------------------------------------------------------------------------------------------- */
/**
* @}
*/
/* ============================================================================================== */
#ifdef __cplusplus
}
#endif
#endif /* ZYDIS_UTILS_H */