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memory ops implemented as OS functions by default

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(cherry picked from commit 67f65f6639)
This commit is contained in:
Ariel Manzur 2016-11-08 19:04:56 -03:00 committed by Rémi Verschelde
parent b3616089fa
commit 159650fe6f
2 changed files with 8 additions and 121 deletions
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42
core/os/copymem.cpp
View file

@ -1,42 +0,0 @@
/*************************************************************************/
/* copymem.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2016 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. */
/*************************************************************************/
#include "copymem.h"
#include <string.h>
void movemem_system(void *to, void *from,int amount) {
memmove(to,from,amount);
}
void zeromem(void* p_mem,size_t p_bytes) {
memset(p_mem,0,p_bytes);
}

87
core/os/copymem.h
View file

@ -31,89 +31,18 @@
#include "typedefs.h"
///@TODO use optimized routines for this, depending on platform. these are just the standard ones
#ifdef PLATFORM_COPYMEM
#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) \
#include "platform_copymem.h" // included from platform/<current_platform>/platform_copymem.h"
#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); \
#else
void movemem_system(void*,void*,int);
#include <string.h>
#define movemem movemem_system
void zeromem(void* p_mem,size_t p_bytes);
#define copymem(to,from,count) memcpy(to,from,count)
#define zeromem(to, count) memset(to, 0, count)
#define movemem(to, from, count) memmove(to, from, count)
#endif
#endif