[git commit] libbb/sha256: code shrink in 32-bit x86
Denys Vlasenko
vda.linux at googlemail.com
Thu Feb 3 14:11:23 UTC 2022
commit: https://git.busybox.net/busybox/commit/?id=de6cb4bed82356db72af81890c7c26d7e85fb50d
branch: https://git.busybox.net/busybox/commit/?id=refs/heads/master
function old new delta
sha256_process_block64_shaNI 747 722 -25
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
libbb/hash_md5_sha256_x86-32_shaNI.S | 35 +++++++++++++++++------------------
1 file changed, 17 insertions(+), 18 deletions(-)
diff --git a/libbb/hash_md5_sha256_x86-32_shaNI.S b/libbb/hash_md5_sha256_x86-32_shaNI.S
index 56e37fa38..632dab7e6 100644
--- a/libbb/hash_md5_sha256_x86-32_shaNI.S
+++ b/libbb/hash_md5_sha256_x86-32_shaNI.S
@@ -49,8 +49,7 @@ sha256_process_block64_shaNI:
palignr $8, STATE1, STATE0 /* ABEF */
pblendw $0xF0, MSGTMP4, STATE1 /* CDGH */
-# mova128 PSHUFFLE_BSWAP32_FLIP_MASK, SHUF_MASK
- lea K256, SHA256CONSTANTS
+ movl $K256+8*16, SHA256CONSTANTS
/* Save hash values for addition after rounds */
mova128 STATE0, 0*16(%esp)
@@ -60,7 +59,7 @@ sha256_process_block64_shaNI:
movu128 0*16(DATA_PTR), MSG
pshufb PSHUFFLE_BSWAP32_FLIP_MASK, MSG
mova128 MSG, MSGTMP0
- paddd 0*16(SHA256CONSTANTS), MSG
+ paddd 0*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -69,7 +68,7 @@ sha256_process_block64_shaNI:
movu128 1*16(DATA_PTR), MSG
pshufb PSHUFFLE_BSWAP32_FLIP_MASK, MSG
mova128 MSG, MSGTMP1
- paddd 1*16(SHA256CONSTANTS), MSG
+ paddd 1*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -79,7 +78,7 @@ sha256_process_block64_shaNI:
movu128 2*16(DATA_PTR), MSG
pshufb PSHUFFLE_BSWAP32_FLIP_MASK, MSG
mova128 MSG, MSGTMP2
- paddd 2*16(SHA256CONSTANTS), MSG
+ paddd 2*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
@@ -89,7 +88,7 @@ sha256_process_block64_shaNI:
movu128 3*16(DATA_PTR), MSG
pshufb PSHUFFLE_BSWAP32_FLIP_MASK, MSG
mova128 MSG, MSGTMP3
- paddd 3*16(SHA256CONSTANTS), MSG
+ paddd 3*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP3, MSGTMP4
palignr $4, MSGTMP2, MSGTMP4
@@ -101,7 +100,7 @@ sha256_process_block64_shaNI:
/* Rounds 16-19 */
mova128 MSGTMP0, MSG
- paddd 4*16(SHA256CONSTANTS), MSG
+ paddd 4*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP0, MSGTMP4
palignr $4, MSGTMP3, MSGTMP4
@@ -113,7 +112,7 @@ sha256_process_block64_shaNI:
/* Rounds 20-23 */
mova128 MSGTMP1, MSG
- paddd 5*16(SHA256CONSTANTS), MSG
+ paddd 5*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP1, MSGTMP4
palignr $4, MSGTMP0, MSGTMP4
@@ -125,7 +124,7 @@ sha256_process_block64_shaNI:
/* Rounds 24-27 */
mova128 MSGTMP2, MSG
- paddd 6*16(SHA256CONSTANTS), MSG
+ paddd 6*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP2, MSGTMP4
palignr $4, MSGTMP1, MSGTMP4
@@ -137,7 +136,7 @@ sha256_process_block64_shaNI:
/* Rounds 28-31 */
mova128 MSGTMP3, MSG
- paddd 7*16(SHA256CONSTANTS), MSG
+ paddd 7*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP3, MSGTMP4
palignr $4, MSGTMP2, MSGTMP4
@@ -149,7 +148,7 @@ sha256_process_block64_shaNI:
/* Rounds 32-35 */
mova128 MSGTMP0, MSG
- paddd 8*16(SHA256CONSTANTS), MSG
+ paddd 8*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP0, MSGTMP4
palignr $4, MSGTMP3, MSGTMP4
@@ -161,7 +160,7 @@ sha256_process_block64_shaNI:
/* Rounds 36-39 */
mova128 MSGTMP1, MSG
- paddd 9*16(SHA256CONSTANTS), MSG
+ paddd 9*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP1, MSGTMP4
palignr $4, MSGTMP0, MSGTMP4
@@ -173,7 +172,7 @@ sha256_process_block64_shaNI:
/* Rounds 40-43 */
mova128 MSGTMP2, MSG
- paddd 10*16(SHA256CONSTANTS), MSG
+ paddd 10*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP2, MSGTMP4
palignr $4, MSGTMP1, MSGTMP4
@@ -185,7 +184,7 @@ sha256_process_block64_shaNI:
/* Rounds 44-47 */
mova128 MSGTMP3, MSG
- paddd 11*16(SHA256CONSTANTS), MSG
+ paddd 11*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP3, MSGTMP4
palignr $4, MSGTMP2, MSGTMP4
@@ -197,7 +196,7 @@ sha256_process_block64_shaNI:
/* Rounds 48-51 */
mova128 MSGTMP0, MSG
- paddd 12*16(SHA256CONSTANTS), MSG
+ paddd 12*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP0, MSGTMP4
palignr $4, MSGTMP3, MSGTMP4
@@ -209,7 +208,7 @@ sha256_process_block64_shaNI:
/* Rounds 52-55 */
mova128 MSGTMP1, MSG
- paddd 13*16(SHA256CONSTANTS), MSG
+ paddd 13*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP1, MSGTMP4
palignr $4, MSGTMP0, MSGTMP4
@@ -220,7 +219,7 @@ sha256_process_block64_shaNI:
/* Rounds 56-59 */
mova128 MSGTMP2, MSG
- paddd 14*16(SHA256CONSTANTS), MSG
+ paddd 14*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
mova128 MSGTMP2, MSGTMP4
palignr $4, MSGTMP1, MSGTMP4
@@ -231,7 +230,7 @@ sha256_process_block64_shaNI:
/* Rounds 60-63 */
mova128 MSGTMP3, MSG
- paddd 15*16(SHA256CONSTANTS), MSG
+ paddd 15*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
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