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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdint.h>
#include <assert.h>
#include <arpa/inet.h>
#include "tools.h"
uint16_t pcilib_swap16(uint16_t x) {
return (((x<<8)&0xFFFF) | ((x>>8)&0xFFFF));
}
uint32_t pcilib_swap32(uint32_t x) {
return ((x & 0xFF) << 24) | \
((x & 0xFF00) << 8) | \
((x & 0xFF0000) >> 8) | \
((x & 0xFF000000) >> 24);
}
uint64_t pcilib_swap64(uint64_t x) {
return (((uint64_t)(x) << 56) | \
(((uint64_t)(x) << 40) & 0xff000000000000ULL) | \
(((uint64_t)(x) << 24) & 0xff0000000000ULL) | \
(((uint64_t)(x) << 8) & 0xff00000000ULL) | \
(((uint64_t)(x) >> 8) & 0xff000000ULL) | \
(((uint64_t)(x) >> 24) & 0xff0000ULL) | \
(((uint64_t)(x) >> 40) & 0xff00ULL) | \
((uint64_t)(x) >> 56));
}
void pcilib_swap(void *dst, void *src, size_t size, size_t n) {
int i;
switch (size) {
case 1:
if (src != dst) memcpy(dst, src, n);
break;
case 2:
for (i = 0; i < n; i++) {
((uint16_t*)dst)[i] = pcilib_swap16(((uint16_t*)src)[i]);
}
break;
case 4:
for (i = 0; i < n; i++) {
((uint32_t*)dst)[i] = pcilib_swap32(((uint32_t*)src)[i]);
}
break;
case 8:
for (i = 0; i < n; i++) {
((uint64_t*)dst)[i] = pcilib_swap64(((uint64_t*)src)[i]);
}
break;
default:
pcilib_error("Invalid word size: %i", size);
}
}
void *pcilib_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 *pcilib_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 = ntohl(*plSrc);
*plDst = *plSrc;
plSrc++;
plDst++;
len -= 4;
}
char * pcDst = (char *) plDst;
char const * pcSrc = (char const *) plSrc;
while (len--) {
*pcDst++ = *pcSrc++;
}
return (dst);
}
void *pcilib_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);
}
*/
void *pcilib_datacpy32(void * dst, void const * src, uint8_t size, size_t n, pcilib_endianess_t endianess) {
uint32_t * plDst = (uint32_t *) dst;
uint32_t const * plSrc = (uint32_t const *) src;
int swap = (endianess == PCILIB_BIG_ENDIAN)?(ntohs(1)!=1):(ntohs(1)==1);
assert(size == 4); // only 32 bit at the moment
while (n > 0) {
if (swap) *plDst = ntohl(*plSrc);
else *plDst = *plSrc;
++plSrc;
++plDst;
--n;
}
}
int pcilib_get_page_mask() {
int pagesize,pagemask,temp;
pagesize = sysconf(_SC_PAGESIZE);
for( pagemask=0, temp = pagesize; temp != 1; ) {
temp = (temp >> 1);
pagemask = (pagemask << 1)+1;
}
return pagemask;
}
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