43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* memory.c
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* by Reisyukaku
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* Copyright (c) 2015 All Rights Reserved
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*/
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#include "memory.h"
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void memcpy(void *dest, const void *src, u32 size){
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u8 *destc = (u8 *)dest;
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const u8 *srcc = (const u8 *)src;
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for(u32 i = 0; i < size; i++)
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destc[i] = srcc[i];
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}
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void memset(void *dest, int filler, u32 size){
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u8 *destc = (u8 *)dest;
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for(u32 i = 0; i < size; i++)
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destc[i] = (u8)filler;
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}
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void memset32(void *dest, u32 filler, u32 size){
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u32 *dest32 = (u32 *)dest;
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for (u32 i = 0; i < size / 4; i++)
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dest32[i] = filler;
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}
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int memcmp(const void *buf1, const void *buf2, u32 size){
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const u8 *buf1c = (const u8 *)buf1;
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const u8 *buf2c = (const u8 *)buf2;
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for(u32 i = 0; i < size; i++){
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int cmp = buf1c[i] - buf2c[i];
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if(cmp) return cmp;
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}
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return 0;
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}
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void *memsearch(void *start_pos, const void *search, u32 size, u32 size_search){
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for(void *pos = start_pos + size - size_search; pos >= start_pos; pos--){
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if(memcmp(pos, search, size_search) == 0) return pos;
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}
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return NULL;
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} |