40 lines
999 B
C
40 lines
999 B
C
#include "digestif.h"
|
|
|
|
#define u_long_s sizeof (unsigned long)
|
|
|
|
static inline void xor_into (uint8_t *src, uint8_t *dst, size_t n) {
|
|
#if defined (__digestif_SSE2__)
|
|
while (n >= 16) {
|
|
_mm_storeu_si128 (
|
|
(__m128i*) dst,
|
|
_mm_xor_si128 (
|
|
_mm_loadu_si128 ((__m128i*) src),
|
|
_mm_loadu_si128 ((__m128i*) dst)));
|
|
src += 16;
|
|
dst += 16;
|
|
n -= 16;
|
|
}
|
|
#endif
|
|
while (n >= u_long_s) {
|
|
*((u_long *) dst) ^= *((u_long *) src);
|
|
src += u_long_s;
|
|
dst += u_long_s;
|
|
n -= u_long_s;
|
|
}
|
|
while (n-- > 0) {
|
|
*dst = *(src ++) ^ *dst;
|
|
dst++;
|
|
}
|
|
}
|
|
|
|
CAMLprim value
|
|
caml_digestif_ba_xor_into (value b1, value off1, value b2, value off2, value n) {
|
|
xor_into (_ba_uint8_off (b1, off1), _ba_uint8_off (b2, off2), Int_val (n));
|
|
return Val_unit;
|
|
}
|
|
|
|
CAMLprim value
|
|
caml_digestif_st_xor_into (value b1, value off1, value b2, value off2, value n) {
|
|
xor_into (_st_uint8_off (b1, off1), _st_uint8_off (b2, off2), Int_val (n));
|
|
return Val_unit;
|
|
}
|