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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdint.h>
void *memcpy8(void * dst, void const * src, size_t len) {
int i;
for (i = 0; i < len; i++) ((char*)dst)[i] = ((char*)src)[i];
return dst;
}
void *memcpy32(void * dst, void const * src, size_t len) {
uint32_t * plDst = (uint32_t *) dst;
uint32_t const * plSrc = (uint32_t const *) src;
while (len >= 4) {
*plDst++ = *plSrc++;
len -= 4;
}
char * pcDst = (char *) plDst;
char const * pcSrc = (char const *) plSrc;
while (len--) {
*pcDst++ = *pcSrc++;
}
return (dst);
}
void *memcpy64(void * dst, void const * src, size_t len) {
uint64_t * plDst = (uint64_t *) dst;
uint64_t const * plSrc = (uint64_t const *) src;
while (len >= 8) {
*plDst++ = *plSrc++;
len -= 8;
}
char * pcDst = (char *) plDst;
char const * pcSrc = (char const *) plSrc;
while (len--) {
*pcDst++ = *pcSrc++;
}
return (dst);
}
/*
void *memcpy128(void * dst, void const * src, size_t len) {
long pos = - (len>>2);
char * plDst = (char *) dst - 4 * pos;
char const * plSrc = (char const *) src - 4 * pos;
if (pos) {
__asm__ __volatile__ (
"1: \n\t"
"mov (%0,%2,4), %%edi \n\t"
"mov %%edi, (%1,%2,4) \n\t"
"inc %2 \n\t"
"jnz 1b \n\t"
:
: "r" (plSrc), "r" (plDst), "r" (pos)
: "%edi"
);
}
long pos = - ((len>>4)<<4);
char * plDst = (char *) dst - pos;
char const * plSrc = (char const *) src - pos;
if (pos) {
__asm__ __volatile__ (
"1: \n\t"
// "movdqa (%0,%2), %%xmm0 \n\t"
"mov (%0,%2), %%esi \n\t"
"movd %%esi, %%xmm0 \n\t"
"mov 4(%0,%2), %%esi \n\t"
"movd %%esi, %%xmm1 \n\t"
"mov 8(%0,%2), %%esi \n\t"
"movd %%esi, %%xmm2 \n\t"
"mov 12(%0,%2), %%esi \n\t"
"movd %%esi, %%xmm3 \n\t"
"pslldq $4, %%xmm1 \n\t"
"por %%xmm1, %%xmm0 \n\t"
"pslldq $8, %%xmm2 \n\t"
"por %%xmm2, %%xmm0 \n\t"
"pslldq $12, %%xmm3 \n\t"
"por %%xmm3, %%xmm0 \n\t"
"movntdq %%xmm0, (%1,%2) \n\t"
"add $16, %2 \n\t"
"jnz 1b \n\t"
:
: "r" (plSrc), "r" (plDst), "r" (pos)
: "%rsi"
);
}
len &= 0x3;
char * pcDst = (char *) plDst;
char const * pcSrc = (char const *) plSrc;
while (len--) {
*pcDst++ = *pcSrc++;
}
return (dst);
}
*/
int get_page_mask() {
int pagesize,pagemask,temp;
pagesize = getpagesize();
for( pagemask=0, temp = pagesize; temp != 1; ) {
temp = (temp >> 1);
pagemask = (pagemask << 1)+1;
}
return pagemask;
}
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