#include "asm-common.h"
///--------------------------------------------------------------------------
+/// Local utilities.
+
+// Magic constants for shuffling.
+#define ROTL 0x93
+#define ROT2 0x4e
+#define ROTR 0x39
+
+///--------------------------------------------------------------------------
/// Main code.
.arch pentium4
// d ^= (c + b) <<< 13
movdqa xmm4, xmm2
paddd xmm4, xmm1
- pshufd xmm1, xmm1, 0x93
+ pshufd xmm1, xmm1, ROTL
movdqa xmm5, xmm4
pslld xmm4, 13
psrld xmm5, 19
// a ^= (d + c) <<< 18
movdqa xmm4, xmm3
- pshufd xmm3, xmm3, 0x39
+ pshufd xmm3, xmm3, ROTR
paddd xmm4, xmm2
- pshufd xmm2, xmm2, 0x4e
+ pshufd xmm2, xmm2, ROT2
movdqa xmm5, xmm4
pslld xmm4, 18
psrld xmm5, 14
// d ^= (c + b) <<< 13
movdqa xmm4, xmm2
paddd xmm4, xmm3
- pshufd xmm3, xmm3, 0x93
+ pshufd xmm3, xmm3, ROTL
movdqa xmm5, xmm4
pslld xmm4, 13
psrld xmm5, 19
// a ^= (d + c) <<< 18
movdqa xmm4, xmm1
- pshufd xmm1, xmm1, 0x39
+ pshufd xmm1, xmm1, ROTR
paddd xmm4, xmm2
- pshufd xmm2, xmm2, 0x4e
+ pshufd xmm2, xmm2, ROT2
movdqa xmm5, xmm4
pslld xmm4, 18
psrld xmm5, 14
mov edx, [ebp + 16]
paddd xmm0, [esp + 0]
- pshufd xmm4, xmm0, 0x39
+ pshufd xmm4, xmm0, ROTR
movd [edx + 0], xmm0
paddd xmm1, [esp + 16]
- pshufd xmm5, xmm1, 0x93
+ pshufd xmm5, xmm1, ROTL
movd [edx + 16], xmm1
paddd xmm2, xmm6
- pshufd xmm6, xmm2, 0x4e
+ pshufd xmm6, xmm2, ROT2
movd [edx + 32], xmm2
paddd xmm3, xmm7
- pshufd xmm7, xmm3, 0x39
+ pshufd xmm7, xmm3, ROTR
movd [edx + 48], xmm3
movd [edx + 4], xmm7
- pshufd xmm7, xmm3, 0x4e
+ pshufd xmm7, xmm3, ROT2
movd [edx + 24], xmm7
- pshufd xmm3, xmm3, 0x93
+ pshufd xmm3, xmm3, ROTL
movd [edx + 44], xmm3
movd [edx + 8], xmm6
- pshufd xmm6, xmm2, 0x93
+ pshufd xmm6, xmm2, ROTL
movd [edx + 28], xmm6
- pshufd xmm2, xmm2, 0x39
+ pshufd xmm2, xmm2, ROTR
movd [edx + 52], xmm2
movd [edx + 12], xmm5
- pshufd xmm5, xmm1, 0x39
+ pshufd xmm5, xmm1, ROTR
movd [edx + 36], xmm5
- pshufd xmm1, xmm1, 0x4e
+ pshufd xmm1, xmm1, ROT2
movd [edx + 56], xmm1
movd [edx + 20], xmm4
- pshufd xmm4, xmm0, 0x4e
+ pshufd xmm4, xmm0, ROT2
movd [edx + 40], xmm4
- pshufd xmm0, xmm0, 0x93
+ pshufd xmm0, xmm0, ROTL
movd [edx + 60], xmm0
// Tidy things up.