514 lines
18 KiB
C
514 lines
18 KiB
C
#if defined(ED25519_GCC_32BIT_SSE_CHOOSE)
|
|
|
|
#define HAVE_GE25519_SCALARMULT_BASE_CHOOSE_NIELS
|
|
|
|
DONNA_NOINLINE static void
|
|
ge25519_scalarmult_base_choose_niels(ge25519_niels *t, const uint8_t table[256][96], uint32_t pos, signed char b) {
|
|
int32_t breg = (int32_t)b;
|
|
uint32_t sign = (uint32_t)breg >> 31;
|
|
uint32_t mask = ~(sign - 1);
|
|
uint32_t u = (breg + mask) ^ mask;
|
|
|
|
__asm__ __volatile__ (
|
|
/* ysubx+xaddy */
|
|
"movl %0, %%eax ;\n"
|
|
"movd %%eax, %%xmm6 ;\n"
|
|
"pshufd $0x00, %%xmm6, %%xmm6 ;\n"
|
|
"pxor %%xmm0, %%xmm0 ;\n"
|
|
"pxor %%xmm1, %%xmm1 ;\n"
|
|
"pxor %%xmm2, %%xmm2 ;\n"
|
|
"pxor %%xmm3, %%xmm3 ;\n"
|
|
|
|
/* 0 */
|
|
"movl $0, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movl $1, %%ecx ;\n"
|
|
"movd %%ecx, %%xmm4 ;\n"
|
|
"pxor %%xmm5, %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* 1 */
|
|
"movl $1, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 0(%1), %%xmm4 ;\n"
|
|
"movdqa 16(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"movdqa 32(%1), %%xmm4 ;\n"
|
|
"movdqa 48(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* 2 */
|
|
"movl $2, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 96(%1), %%xmm4 ;\n"
|
|
"movdqa 112(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"movdqa 128(%1), %%xmm4 ;\n"
|
|
"movdqa 144(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* 3 */
|
|
"movl $3, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 192(%1), %%xmm4 ;\n"
|
|
"movdqa 208(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"movdqa 224(%1), %%xmm4 ;\n"
|
|
"movdqa 240(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* 4 */
|
|
"movl $4, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 288(%1), %%xmm4 ;\n"
|
|
"movdqa 304(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"movdqa 320(%1), %%xmm4 ;\n"
|
|
"movdqa 336(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* 5 */
|
|
"movl $5, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 384(%1), %%xmm4 ;\n"
|
|
"movdqa 400(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"movdqa 416(%1), %%xmm4 ;\n"
|
|
"movdqa 432(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* 6 */
|
|
"movl $6, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 480(%1), %%xmm4 ;\n"
|
|
"movdqa 496(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"movdqa 512(%1), %%xmm4 ;\n"
|
|
"movdqa 528(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* 7 */
|
|
"movl $7, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 576(%1), %%xmm4 ;\n"
|
|
"movdqa 592(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"movdqa 608(%1), %%xmm4 ;\n"
|
|
"movdqa 624(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* 8 */
|
|
"movl $8, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 672(%1), %%xmm4 ;\n"
|
|
"movdqa 688(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm0 ;\n"
|
|
"por %%xmm5, %%xmm1 ;\n"
|
|
"movdqa 704(%1), %%xmm4 ;\n"
|
|
"movdqa 720(%1), %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"por %%xmm4, %%xmm2 ;\n"
|
|
"por %%xmm5, %%xmm3 ;\n"
|
|
|
|
/* conditional swap based on sign */
|
|
"movl %3, %%ecx ;\n"
|
|
"movl %2, %%eax ;\n"
|
|
"xorl $1, %%ecx ;\n"
|
|
"movd %%ecx, %%xmm6 ;\n"
|
|
"pxor %%xmm7, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm6, %%xmm6 ;\n"
|
|
"pxor %%xmm0, %%xmm2 ;\n"
|
|
"pxor %%xmm1, %%xmm3 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa %%xmm2, %%xmm4 ;\n"
|
|
"movdqa %%xmm3, %%xmm5 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm5 ;\n"
|
|
"pxor %%xmm4, %%xmm0 ;\n"
|
|
"pxor %%xmm5, %%xmm1 ;\n"
|
|
"pxor %%xmm0, %%xmm2 ;\n"
|
|
"pxor %%xmm1, %%xmm3 ;\n"
|
|
|
|
/* store ysubx */
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"movl %%ecx, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 0(%%eax) ;\n"
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"shrdl $26, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 4(%%eax) ;\n"
|
|
"movd %%xmm0, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"shrdl $19, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 8(%%eax) ;\n"
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"shrdl $13, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 12(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrl $6, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 16(%%eax) ;\n"
|
|
"movl %%edx, %%ecx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 20(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrdl $25, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 24(%%eax) ;\n"
|
|
"movd %%xmm1, %%ecx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrdl $19, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 28(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"shrdl $12, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 32(%%eax) ;\n"
|
|
"shrl $6, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"xorl %%ecx, %%ecx ;\n"
|
|
"movl %%edx, 36(%%eax) ;\n"
|
|
"movl %%ecx, 40(%%eax) ;\n"
|
|
"movl %%ecx, 44(%%eax) ;\n"
|
|
|
|
/* store xaddy */
|
|
"addl $48, %%eax ;\n"
|
|
"movdqa %%xmm2, %%xmm0 ;\n"
|
|
"movdqa %%xmm3, %%xmm1 ;\n"
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"movl %%ecx, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 0(%%eax) ;\n"
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"shrdl $26, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 4(%%eax) ;\n"
|
|
"movd %%xmm0, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"shrdl $19, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 8(%%eax) ;\n"
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"shrdl $13, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 12(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrl $6, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 16(%%eax) ;\n"
|
|
"movl %%edx, %%ecx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 20(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrdl $25, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 24(%%eax) ;\n"
|
|
"movd %%xmm1, %%ecx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrdl $19, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 28(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"shrdl $12, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 32(%%eax) ;\n"
|
|
"shrl $6, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"xorl %%ecx, %%ecx ;\n"
|
|
"movl %%edx, 36(%%eax) ;\n"
|
|
"movl %%ecx, 40(%%eax) ;\n"
|
|
"movl %%ecx, 44(%%eax) ;\n"
|
|
|
|
/* t2d */
|
|
"movl %0, %%eax ;\n"
|
|
"movd %%eax, %%xmm6 ;\n"
|
|
"pshufd $0x00, %%xmm6, %%xmm6 ;\n"
|
|
"pxor %%xmm0, %%xmm0 ;\n"
|
|
"pxor %%xmm1, %%xmm1 ;\n"
|
|
|
|
/* 0 */
|
|
"movl $0, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"pxor %%xmm0, %%xmm0 ;\n"
|
|
"pxor %%xmm1, %%xmm1 ;\n"
|
|
|
|
/* 1 */
|
|
"movl $1, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 64(%1), %%xmm3 ;\n"
|
|
"movdqa 80(%1), %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm3 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"por %%xmm3, %%xmm0 ;\n"
|
|
"por %%xmm4, %%xmm1 ;\n"
|
|
|
|
/* 2 */
|
|
"movl $2, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 160(%1), %%xmm3 ;\n"
|
|
"movdqa 176(%1), %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm3 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"por %%xmm3, %%xmm0 ;\n"
|
|
"por %%xmm4, %%xmm1 ;\n"
|
|
|
|
/* 3 */
|
|
"movl $3, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 256(%1), %%xmm3 ;\n"
|
|
"movdqa 272(%1), %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm3 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"por %%xmm3, %%xmm0 ;\n"
|
|
"por %%xmm4, %%xmm1 ;\n"
|
|
|
|
/* 4 */
|
|
"movl $4, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 352(%1), %%xmm3 ;\n"
|
|
"movdqa 368(%1), %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm3 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"por %%xmm3, %%xmm0 ;\n"
|
|
"por %%xmm4, %%xmm1 ;\n"
|
|
|
|
/* 5 */
|
|
"movl $5, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 448(%1), %%xmm3 ;\n"
|
|
"movdqa 464(%1), %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm3 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"por %%xmm3, %%xmm0 ;\n"
|
|
"por %%xmm4, %%xmm1 ;\n"
|
|
|
|
/* 6 */
|
|
"movl $6, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 544(%1), %%xmm3 ;\n"
|
|
"movdqa 560(%1), %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm3 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"por %%xmm3, %%xmm0 ;\n"
|
|
"por %%xmm4, %%xmm1 ;\n"
|
|
|
|
/* 7 */
|
|
"movl $7, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 640(%1), %%xmm3 ;\n"
|
|
"movdqa 656(%1), %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm3 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"por %%xmm3, %%xmm0 ;\n"
|
|
"por %%xmm4, %%xmm1 ;\n"
|
|
|
|
/* 8 */
|
|
"movl $8, %%eax ;\n"
|
|
"movd %%eax, %%xmm7 ;\n"
|
|
"pshufd $0x00, %%xmm7, %%xmm7 ;\n"
|
|
"pcmpeqd %%xmm6, %%xmm7 ;\n"
|
|
"movdqa 736(%1), %%xmm3 ;\n"
|
|
"movdqa 752(%1), %%xmm4 ;\n"
|
|
"pand %%xmm7, %%xmm3 ;\n"
|
|
"pand %%xmm7, %%xmm4 ;\n"
|
|
"por %%xmm3, %%xmm0 ;\n"
|
|
"por %%xmm4, %%xmm1 ;\n"
|
|
|
|
/* store t2d */
|
|
"movl %2, %%eax ;\n"
|
|
"addl $96, %%eax ;\n"
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"movl %%ecx, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 0(%%eax) ;\n"
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"shrdl $26, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 4(%%eax) ;\n"
|
|
"movd %%xmm0, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm0, %%xmm0 ;\n"
|
|
"shrdl $19, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 8(%%eax) ;\n"
|
|
"movd %%xmm0, %%ecx ;\n"
|
|
"shrdl $13, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 12(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrl $6, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 16(%%eax) ;\n"
|
|
"movl %%edx, %%ecx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 20(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrdl $25, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 24(%%eax) ;\n"
|
|
"movd %%xmm1, %%ecx ;\n"
|
|
"pshufd $0x39, %%xmm1, %%xmm1 ;\n"
|
|
"shrdl $19, %%ecx, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"movl %%edx, 28(%%eax) ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"movd %%xmm1, %%edx ;\n"
|
|
"shrdl $12, %%edx, %%ecx ;\n"
|
|
"andl $0x3ffffff, %%ecx ;\n"
|
|
"movl %%ecx, 32(%%eax) ;\n"
|
|
"shrl $6, %%edx ;\n"
|
|
"andl $0x1ffffff, %%edx ;\n"
|
|
"xorl %%ecx, %%ecx ;\n"
|
|
"movl %%edx, 36(%%eax) ;\n"
|
|
"movl %%ecx, 40(%%eax) ;\n"
|
|
"movl %%ecx, 44(%%eax) ;\n"
|
|
"movdqa 0(%%eax), %%xmm0 ;\n"
|
|
"movdqa 16(%%eax), %%xmm1 ;\n"
|
|
"movdqa 32(%%eax), %%xmm2 ;\n"
|
|
|
|
/* conditionally negate t2d */
|
|
|
|
/* set up 2p in to 3/4 */
|
|
"movl $0x7ffffda, %%ecx ;\n"
|
|
"movl $0x3fffffe, %%edx ;\n"
|
|
"movd %%ecx, %%xmm3 ;\n"
|
|
"movd %%edx, %%xmm5 ;\n"
|
|
"movl $0x7fffffe, %%ecx ;\n"
|
|
"movd %%ecx, %%xmm4 ;\n"
|
|
"punpckldq %%xmm5, %%xmm3 ;\n"
|
|
"punpckldq %%xmm5, %%xmm4 ;\n"
|
|
"punpcklqdq %%xmm4, %%xmm3 ;\n"
|
|
"movdqa %%xmm4, %%xmm5 ;\n"
|
|
"punpcklqdq %%xmm4, %%xmm4 ;\n"
|
|
|
|
/* subtract and conditionally move */
|
|
"movl %3, %%ecx ;\n"
|
|
"sub $1, %%ecx ;\n"
|
|
"movd %%ecx, %%xmm6 ;\n"
|
|
"pshufd $0x00, %%xmm6, %%xmm6 ;\n"
|
|
"movdqa %%xmm6, %%xmm7 ;\n"
|
|
"psubd %%xmm0, %%xmm3 ;\n"
|
|
"psubd %%xmm1, %%xmm4 ;\n"
|
|
"psubd %%xmm2, %%xmm5 ;\n"
|
|
"pand %%xmm6, %%xmm0 ;\n"
|
|
"pand %%xmm6, %%xmm1 ;\n"
|
|
"pand %%xmm6, %%xmm2 ;\n"
|
|
"pandn %%xmm3, %%xmm6 ;\n"
|
|
"movdqa %%xmm7, %%xmm3 ;\n"
|
|
"pandn %%xmm4, %%xmm7 ;\n"
|
|
"pandn %%xmm5, %%xmm3 ;\n"
|
|
"por %%xmm6, %%xmm0 ;\n"
|
|
"por %%xmm7, %%xmm1 ;\n"
|
|
"por %%xmm3, %%xmm2 ;\n"
|
|
|
|
/* store */
|
|
"movdqa %%xmm0, 0(%%eax) ;\n"
|
|
"movdqa %%xmm1, 16(%%eax) ;\n"
|
|
"movdqa %%xmm2, 32(%%eax) ;\n"
|
|
:
|
|
: "m"(u), "r"(&table[pos * 8]), "m"(t), "m"(sign) /* %0 = u, %1 = table, %2 = t, %3 = sign */
|
|
: "%eax", "%ecx", "%edx", "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7", "cc", "memory"
|
|
);
|
|
}
|
|
|
|
#endif /* defined(ED25519_GCC_32BIT_SSE_CHOOSE) */
|
|
|