mirror of
https://github.com/godotengine/godot.git
synced 2024-12-21 10:25:24 +08:00
120 lines
4.7 KiB
C
120 lines
4.7 KiB
C
|
/*************************************************************************/
|
||
|
|
/* copymem.h */
|
||
|
|
/*************************************************************************/
|
||
|
|
/* This file is part of: */
|
||
|
|
/* GODOT ENGINE */
|
||
|
|
/* http://www.godotengine.org */
|
||
|
|
/*************************************************************************/
|
||
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
||
|
|
/* */
|
||
|
|
/* 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. */
|
||
|
|
/*************************************************************************/
|
||
|
|
#ifndef COPYMEM_H
|
||
|
|
#define COPYMEM_H
|
||
|
|
|
||
|
|
#include "typedefs.h"
|
||
|
|
|
||
|
|
///@TODO use optimized routines for this, depending on platform. these are just the standard ones
|
||
|
|
|
||
|
|
#define copymem(m_to,m_from,m_count) \
|
||
|
|
do { \
|
||
|
|
unsigned char * _from=(unsigned char*)m_from; \
|
||
|
|
unsigned char * _to=(unsigned char*)m_to; \
|
||
|
|
int _count=m_count; \
|
||
|
|
for (int _i=0;_i<_count;_i++) \
|
||
|
|
_to[_i]=_from[_i]; \
|
||
|
|
} while (0);
|
||
|
|
/*
|
||
|
|
case 0: *_dto++ = *_dfrom++; \
|
||
|
|
case 7: *_dto++ = *_dfrom++; \
|
||
|
|
case 6: *_dto++ = *_dfrom++; \
|
||
|
|
case 5: *_dto++ = *_dfrom++; \
|
||
|
|
case 4: *_dto++ = *_dfrom++; \
|
||
|
|
case 3: *_dto++ = *_dfrom++; \
|
||
|
|
case 2: *_dto++ = *_dfrom++; \
|
||
|
|
case 1: *_dto++ = *_dfrom++; \
|
||
|
|
*/
|
||
|
|
#define movemem_duff(m_to, m_from, m_count) \
|
||
|
|
do { \
|
||
|
|
if (m_to<m_from) { \
|
||
|
|
unsigned char* _dto = (unsigned char*)m_to; \
|
||
|
|
unsigned char* _dfrom = (unsigned char*)m_from; \
|
||
|
|
int n = (m_count + 7) / 8; \
|
||
|
|
switch (m_count % 8) { \
|
||
|
|
do { \
|
||
|
|
case 0: *_dto++ = *_dfrom++; \
|
||
|
|
case 7: *_dto++ = *_dfrom++; \
|
||
|
|
case 6: *_dto++ = *_dfrom++; \
|
||
|
|
case 5: *_dto++ = *_dfrom++; \
|
||
|
|
case 4: *_dto++ = *_dfrom++; \
|
||
|
|
case 3: *_dto++ = *_dfrom++; \
|
||
|
|
case 2: *_dto++ = *_dfrom++; \
|
||
|
|
case 1: *_dto++ = *_dfrom++; \
|
||
|
|
} while (--n > 0); \
|
||
|
|
}; \
|
||
|
|
} else if (m_to>m_from) { \
|
||
|
|
unsigned char* _dto = &((unsigned char*)m_to)[m_count-1]; \
|
||
|
|
unsigned char* _dfrom = &((unsigned char*)m_from)[m_count-1]; \
|
||
|
|
int n = (m_count + 7) / 8; \
|
||
|
|
switch (m_count % 8) { \
|
||
|
|
do { \
|
||
|
|
case 0: *_dto-- = *_dfrom--; \
|
||
|
|
case 7: *_dto-- = *_dfrom--; \
|
||
|
|
case 6: *_dto-- = *_dfrom--; \
|
||
|
|
case 5: *_dto-- = *_dfrom--; \
|
||
|
|
case 4: *_dto-- = *_dfrom--; \
|
||
|
|
case 3: *_dto-- = *_dfrom--; \
|
||
|
|
case 2: *_dto-- = *_dfrom--; \
|
||
|
|
case 1: *_dto-- = *_dfrom--; \
|
||
|
|
} while (--n > 0); \
|
||
|
|
}; \
|
||
|
|
} \
|
||
|
|
} while(0) \
|
||
|
|
|
||
|
|
#define movemem_conventional(m_to,m_from,m_count) \
|
||
|
|
do { \
|
||
|
|
if (m_to<m_from) { \
|
||
|
|
unsigned char * _from=(unsigned char*)m_from; \
|
||
|
|
unsigned char * _to=(unsigned char*)m_to; \
|
||
|
|
int _count=m_count; \
|
||
|
|
for (int _i=0;_i<_count;_i++) \
|
||
|
|
_to[_i]=_from[_i]; \
|
||
|
|
\
|
||
|
|
} else if (m_to>m_from) { \
|
||
|
|
unsigned char * _from=(unsigned char*)m_from; \
|
||
|
|
unsigned char * _to=(unsigned char*)m_to; \
|
||
|
|
int _count=m_count; \
|
||
|
|
while (_count--) \
|
||
|
|
_to[_count]=_from[_count]; \
|
||
|
|
\
|
||
|
|
\
|
||
|
|
} \
|
||
|
|
} while (0); \
|
||
|
|
|
||
|
|
void movemem_system(void*,void*,int);
|
||
|
|
|
||
|
|
#define movemem movemem_system
|
||
|
|
|
||
|
|
|
||
|
|
void zeromem(void* p_mem,size_t p_bytes);
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|