mirror of https://github.com/x64dbg/zydis
83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
/***************************************************************************************************
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Zyan Disassembler Library (Zydis)
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Original Author : Joel Höner
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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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#ifndef ZYDIS_INTERNAL_LIBC_H
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#define ZYDIS_INTERNAL_LIBC_H
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#include <Zydis/Defines.h>
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#ifndef ZYDIS_NO_LIBC
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/* ============================================================================================== */
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/* LibC is available */
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/* ============================================================================================== */
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# include <string.h>
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# define ZydisMemoryCopy memcpy
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# define ZydisMemorySet memset
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# define ZydisStrLen strlen
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#else
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/* ============================================================================================== */
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/* No LibC available, use our own functions */
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/* ============================================================================================== */
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/*
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* These implementations are by no means optimized and will be outperformed by pretty much any
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* libc implementation out there. We do not aim towards providing competetive implementations here,
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* but towards providing a last resort fallback for environments without a working libc.
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*/
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ZYDIS_INLINE void* ZydisMemorySet(void* ptr, int value, ZydisUSize num)
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{
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ZydisU8 c = value & 0xff;
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for (ZydisUSize i = 0; i < num; ++i) ((ZydisU8*)ptr)[i] = c;
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return ptr;
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}
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ZYDIS_INLINE void* ZydisMemoryCopy(void* dst, const void* src, ZydisUSize num)
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{
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for (ZydisUSize i = 0; i < num; ++i)
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{
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((ZydisU8*)dst)[i] = ((const ZydisU8*)src)[i];
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}
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return dst;
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}
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ZYDIS_INLINE ZydisUSize ZydisStrLen(const char* str)
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{
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const char *s;
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for (s = str; *s; ++s);
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return s - str;
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}
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/* ============================================================================================== */
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#endif
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#endif /* ZYDIS_INTERNAL_LIBC_H */
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