mirror of https://github.com/x64dbg/zydis
93 lines
3.8 KiB
C
93 lines
3.8 KiB
C
/***************************************************************************************************
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Zyan Disassembler Library (Zydis)
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Original Author : Florian Bernd
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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***************************************************************************************************/
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#include <stdint.h>
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#include <Zydis/Utils.h>
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/* ============================================================================================== */
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/* Operand utils */
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/* ============================================================================================== */
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/* ---------------------------------------------------------------------------------------------- */
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/* Exported functions */
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/* ---------------------------------------------------------------------------------------------- */
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ZydisStatus ZydisUtilsCalcAbsoluteTargetAddress(const ZydisInstructionInfo* info,
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const ZydisOperandInfo* operand, uint64_t* address)
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{
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if (!info || !operand || !address)
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{
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return ZYDIS_STATUS_INVALID_PARAMETER;
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}
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switch (operand->type)
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{
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case ZYDIS_OPERAND_TYPE_MEMORY:
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if (operand->mem.disp.dataSize == 0)
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{
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return ZYDIS_STATUS_INVALID_PARAMETER;
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}
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if (operand->mem.base == ZYDIS_REGISTER_EIP)
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{
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*address = (uint64_t)((uint32_t)info->instrPointer + operand->mem.disp.value.sdword);
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return ZYDIS_STATUS_SUCCESS;
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}
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if (operand->mem.base == ZYDIS_REGISTER_RIP)
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{
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*address = (uint64_t)(info->instrPointer + operand->mem.disp.value.sqword);
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return ZYDIS_STATUS_SUCCESS;
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}
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break;
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case ZYDIS_OPERAND_TYPE_IMMEDIATE:
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if (operand->imm.isSigned && operand->imm.isRelative)
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{
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*address = (uint64_t)((int64_t)info->instrPointer + operand->imm.value.sqword);
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switch (info->mode)
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{
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case ZYDIS_DISASSEMBLER_MODE_16BIT:
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case ZYDIS_DISASSEMBLER_MODE_32BIT:
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if (operand->size == 16)
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{
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*address &= 0xFFFF;
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}
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break;
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case ZYDIS_DISASSEMBLER_MODE_64BIT:
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break;
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default:
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return ZYDIS_STATUS_INVALID_PARAMETER;
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}
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return ZYDIS_STATUS_SUCCESS;
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}
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break;
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default:
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break;
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}
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return ZYDIS_STATUS_INVALID_PARAMETER;
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}
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/* ---------------------------------------------------------------------------------------------- */
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/* ============================================================================================== */
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