[git commit] libbb/sha256: code shrink in 64-bit x86
Denys Vlasenko
vda.linux at googlemail.com
Sat Feb 5 23:33:42 UTC 2022
commit: https://git.busybox.net/busybox/commit/?id=31c1c310772fa6c897ee1585ea15fc38f3ab3dff
branch: https://git.busybox.net/busybox/commit/?id=refs/heads/master
function old new delta
sha256_process_block64_shaNI 706 701 -5
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
libbb/hash_md5_sha256_x86-64_shaNI.S | 96 ++++++++++++++++++------------------
1 file changed, 48 insertions(+), 48 deletions(-)
diff --git a/libbb/hash_md5_sha256_x86-64_shaNI.S b/libbb/hash_md5_sha256_x86-64_shaNI.S
index f3df541e4..dbf391135 100644
--- a/libbb/hash_md5_sha256_x86-64_shaNI.S
+++ b/libbb/hash_md5_sha256_x86-64_shaNI.S
@@ -31,9 +31,7 @@
#define MSGTMP1 %xmm4
#define MSGTMP2 %xmm5
#define MSGTMP3 %xmm6
-#define MSGTMP4 %xmm7
-
-#define SHUF_MASK %xmm8
+#define XMMTMP4 %xmm7
#define ABEF_SAVE %xmm9
#define CDGH_SAVE %xmm10
@@ -45,11 +43,12 @@ sha256_process_block64_shaNI:
shuf128_32 $0xB1, STATE0, STATE0 /* CDAB */
shuf128_32 $0x1B, STATE1, STATE1 /* EFGH */
- mova128 STATE0, MSGTMP4
+ mova128 STATE0, XMMTMP4
palignr $8, STATE1, STATE0 /* ABEF */
- pblendw $0xF0, MSGTMP4, STATE1 /* CDGH */
+ pblendw $0xF0, XMMTMP4, STATE1 /* CDGH */
- mova128 PSHUFFLE_BSWAP32_FLIP_MASK(%rip), SHUF_MASK
+/* XMMTMP4 holds flip mask from here... */
+ mova128 PSHUFFLE_BSWAP32_FLIP_MASK(%rip), XMMTMP4
leaq K256+8*16(%rip), SHA256CONSTANTS
/* Save hash values for addition after rounds */
@@ -58,7 +57,7 @@ sha256_process_block64_shaNI:
/* Rounds 0-3 */
movu128 0*16(DATA_PTR), MSG
- pshufb SHUF_MASK, MSG
+ pshufb XMMTMP4, MSG
mova128 MSG, MSGTMP0
paddd 0*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
@@ -67,7 +66,7 @@ sha256_process_block64_shaNI:
/* Rounds 4-7 */
movu128 1*16(DATA_PTR), MSG
- pshufb SHUF_MASK, MSG
+ pshufb XMMTMP4, MSG
mova128 MSG, MSGTMP1
paddd 1*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
@@ -77,7 +76,7 @@ sha256_process_block64_shaNI:
/* Rounds 8-11 */
movu128 2*16(DATA_PTR), MSG
- pshufb SHUF_MASK, MSG
+ pshufb XMMTMP4, MSG
mova128 MSG, MSGTMP2
paddd 2*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
@@ -87,13 +86,14 @@ sha256_process_block64_shaNI:
/* Rounds 12-15 */
movu128 3*16(DATA_PTR), MSG
- pshufb SHUF_MASK, MSG
+ pshufb XMMTMP4, MSG
+/* ...to here */
mova128 MSG, MSGTMP3
paddd 3*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP3, MSGTMP4
- palignr $4, MSGTMP2, MSGTMP4
- paddd MSGTMP4, MSGTMP0
+ mova128 MSGTMP3, XMMTMP4
+ palignr $4, MSGTMP2, XMMTMP4
+ paddd XMMTMP4, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -103,9 +103,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP0, MSG
paddd 4*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP0, MSGTMP4
- palignr $4, MSGTMP3, MSGTMP4
- paddd MSGTMP4, MSGTMP1
+ mova128 MSGTMP0, XMMTMP4
+ palignr $4, MSGTMP3, XMMTMP4
+ paddd XMMTMP4, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -115,9 +115,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP1, MSG
paddd 5*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP1, MSGTMP4
- palignr $4, MSGTMP0, MSGTMP4
- paddd MSGTMP4, MSGTMP2
+ mova128 MSGTMP1, XMMTMP4
+ palignr $4, MSGTMP0, XMMTMP4
+ paddd XMMTMP4, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -127,9 +127,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP2, MSG
paddd 6*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP2, MSGTMP4
- palignr $4, MSGTMP1, MSGTMP4
- paddd MSGTMP4, MSGTMP3
+ mova128 MSGTMP2, XMMTMP4
+ palignr $4, MSGTMP1, XMMTMP4
+ paddd XMMTMP4, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -139,9 +139,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP3, MSG
paddd 7*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP3, MSGTMP4
- palignr $4, MSGTMP2, MSGTMP4
- paddd MSGTMP4, MSGTMP0
+ mova128 MSGTMP3, XMMTMP4
+ palignr $4, MSGTMP2, XMMTMP4
+ paddd XMMTMP4, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -151,9 +151,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP0, MSG
paddd 8*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP0, MSGTMP4
- palignr $4, MSGTMP3, MSGTMP4
- paddd MSGTMP4, MSGTMP1
+ mova128 MSGTMP0, XMMTMP4
+ palignr $4, MSGTMP3, XMMTMP4
+ paddd XMMTMP4, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -163,9 +163,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP1, MSG
paddd 9*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP1, MSGTMP4
- palignr $4, MSGTMP0, MSGTMP4
- paddd MSGTMP4, MSGTMP2
+ mova128 MSGTMP1, XMMTMP4
+ palignr $4, MSGTMP0, XMMTMP4
+ paddd XMMTMP4, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -175,9 +175,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP2, MSG
paddd 10*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP2, MSGTMP4
- palignr $4, MSGTMP1, MSGTMP4
- paddd MSGTMP4, MSGTMP3
+ mova128 MSGTMP2, XMMTMP4
+ palignr $4, MSGTMP1, XMMTMP4
+ paddd XMMTMP4, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -187,9 +187,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP3, MSG
paddd 11*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP3, MSGTMP4
- palignr $4, MSGTMP2, MSGTMP4
- paddd MSGTMP4, MSGTMP0
+ mova128 MSGTMP3, XMMTMP4
+ palignr $4, MSGTMP2, XMMTMP4
+ paddd XMMTMP4, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -199,9 +199,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP0, MSG
paddd 12*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP0, MSGTMP4
- palignr $4, MSGTMP3, MSGTMP4
- paddd MSGTMP4, MSGTMP1
+ mova128 MSGTMP0, XMMTMP4
+ palignr $4, MSGTMP3, XMMTMP4
+ paddd XMMTMP4, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -211,9 +211,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP1, MSG
paddd 13*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP1, MSGTMP4
- palignr $4, MSGTMP0, MSGTMP4
- paddd MSGTMP4, MSGTMP2
+ mova128 MSGTMP1, XMMTMP4
+ palignr $4, MSGTMP0, XMMTMP4
+ paddd XMMTMP4, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -222,9 +222,9 @@ sha256_process_block64_shaNI:
mova128 MSGTMP2, MSG
paddd 14*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
- mova128 MSGTMP2, MSGTMP4
- palignr $4, MSGTMP1, MSGTMP4
- paddd MSGTMP4, MSGTMP3
+ mova128 MSGTMP2, XMMTMP4
+ palignr $4, MSGTMP1, XMMTMP4
+ paddd XMMTMP4, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -243,9 +243,9 @@ sha256_process_block64_shaNI:
/* Write hash values back in the correct order */
shuf128_32 $0x1B, STATE0, STATE0 /* FEBA */
shuf128_32 $0xB1, STATE1, STATE1 /* DCHG */
- mova128 STATE0, MSGTMP4
+ mova128 STATE0, XMMTMP4
pblendw $0xF0, STATE1, STATE0 /* DCBA */
- palignr $8, MSGTMP4, STATE1 /* HGFE */
+ palignr $8, XMMTMP4, STATE1 /* HGFE */
movu128 STATE0, 80+0*16(%rdi)
movu128 STATE1, 80+1*16(%rdi)
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