110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
/*
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** Copyright (c) 2001-2005 Expat maintainers.
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**
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** Permission is hereby granted, free of charge, to any person obtaining
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** a copy of this software and associated documentation files (the
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** "Software"), to deal in the Software without restriction, including
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** without limitation the rights to use, copy, modify, merge, publish,
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** distribute, sublicense, and/or sell copies of the Software, and to
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** permit persons to whom the Software is furnished to do so, subject to
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** the following conditions:
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**
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** The above copyright notice and this permission notice shall be included
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** in all 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,
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** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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** SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <exec/memory.h>
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#include <proto/exec.h>
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#include <proto/utility.h>
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void * malloc (size_t len)
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{
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uint32 size = sizeof(uint32) + len;
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uint32 *mem = AllocMem(size, MEMF_ANY);
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if ( mem != 0 ) {
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*mem = size;
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++mem;
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}
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return mem;
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}
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void * realloc (void * mem, size_t len2)
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{
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if ( mem == 0 ) {
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return malloc(len2);
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}
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if ( len2 == 0 ) {
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free(mem);
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return 0;
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}
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void * new_mem = malloc(len2);
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if ( new_mem == 0 ) {
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return 0;
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}
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uint32 mem_size = *(((uint32*)mem) - 1);
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CopyMem(mem, new_mem, mem_size);
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free(mem);
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return new_mem;
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}
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void free (void * mem)
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{
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if ( mem != 0 ) {
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uint32 size = *(((uint32*)mem) - 1);
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FreeMem(mem, size);
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}
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}
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int memcmp (const void * a, const void * b, size_t len)
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{
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size_t i;
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int diff;
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for ( i = 0; i < len; ++i ) {
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diff = *((uint8 *)a++) - *((uint8 *)b++);
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if ( diff ) {
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return diff;
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}
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}
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return 0;
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}
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void * memcpy (void * t, const void * a, size_t len)
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{
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CopyMem((APTR)a, t, len);
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return t;
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}
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void * memmove (void * t1, const void * t2, size_t len)
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{
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MoveMem((APTR)t2, t1, len);
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return t1;
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}
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void * memset (void * t, int c, size_t len)
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{
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return SetMem(t, c, len);
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}
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