mirror of
https://github.com/wiiu-env/haxchi.git
synced 2024-11-16 21:29:17 +01:00
3c6dadb2a6
-added system reload patches to CBHC, thanks to dimok for patch location and elf patcher!
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/***************************************************************************
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* Copyright (C) 2016
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* by Dimok
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any
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* damages arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any
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* purpose, including commercial applications, and to alter it and
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* redistribute it freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you
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* must not claim that you wrote the original software. If you use
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* this software in a product, an acknowledgment in the product
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* documentation would be appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and
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* must not be misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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***************************************************************************/
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// this memcpy is optimized for speed and to work with MEM1 32 bit access alignment requirement
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void reverse_memcpy(void* dst, const void* src, unsigned int size)
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{
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const unsigned char *src_p;
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unsigned char *dst_p;
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if((size >= 4) && !((dst - src) & 3))
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{
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const unsigned int *src_p32;
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unsigned int *dst_p32;
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unsigned int endDst = ((unsigned int)dst) + size;
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unsigned int endRest = endDst & 3;
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if(endRest)
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{
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src_p = ((const unsigned char*)(src + size)) - 1;
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dst_p = ((unsigned char*)endDst) - 1;
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size -= endRest;
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while(endRest--)
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*dst_p-- = *src_p--;
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}
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src_p32 = ((const unsigned int*)(src + size)) - 1;
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dst_p32 = ((unsigned int*)(dst + size)) - 1;
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unsigned int size32 = size >> 5;
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if(size32)
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{
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size &= 0x1F;
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while(size32--)
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{
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src_p32 -= 8;
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dst_p32 -= 8;
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dst_p32[8] = src_p32[8];
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dst_p32[7] = src_p32[7];
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dst_p32[6] = src_p32[6];
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dst_p32[5] = src_p32[5];
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dst_p32[4] = src_p32[4];
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dst_p32[3] = src_p32[3];
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dst_p32[2] = src_p32[2];
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dst_p32[1] = src_p32[1];
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}
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}
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unsigned int size4 = size >> 2;
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if(size4)
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{
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size &= 3;
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while(size4--)
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*dst_p32-- = *src_p32--;
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}
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dst_p = ((unsigned char*)dst_p32) + 3;
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src_p = ((const unsigned char*)src_p32) + 3;
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}
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else
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{
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dst_p = ((unsigned char*)dst) + size - 1;
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src_p = ((const unsigned char*)src) + size - 1;
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}
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while(size--)
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*dst_p-- = *src_p--;
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}
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