0bab5da37
Denys Vlasenko
2022-01-07
Subject
libbb/sha1: tweak comments
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libbb/hash_md5_sha_x86-32_shaNI.S+3 -3
| @@ -34,7 +34,7 @@ | |
| #define MSG3 %xmm6 | |
| #define SHUF_MASK %xmm7 | |
| - | .balign 8 # allow decoders to fetch at least 2 first insns |
| + | .balign 8 # allow decoders to fetch at least 3 first insns |
| sha1_process_block64_shaNI: | |
| pushl %ebp | |
| movl %esp, %ebp | |
| @@ -44,8 +44,8 @@ sha1_process_block64_shaNI: | |
| /* load initial hash values */ | |
| xor128 E0, E0 | |
| movu128 76(%eax), ABCD | |
| - | pinsrd $3, 76+4*4(%eax), E0 # load to upper 32-bit word |
| - | shuf128_32 $0x1B, ABCD, ABCD # 00011011: bswap |
| + | pinsrd $3, 76+4*4(%eax), E0 # load to uppermost 32-bit word |
| + | shuf128_32 $0x1B, ABCD, ABCD # DCBA -> ABCD |
| mova128 PSHUFFLE_BYTE_FLIP_MASK, SHUF_MASK | |
libbb/hash_md5_sha_x86-64_shaNI.S+2 -2
| @@ -40,8 +40,8 @@ sha1_process_block64_shaNI: | |
| xor128 E0, E0 | |
| movu128 80(%rdi), ABCD | |
| - | pinsrd $3, 80+4*4(%rdi), E0 # load to upper 32-bit word |
| - | shuf128_32 $0x1B, ABCD, ABCD # 00011011: bswap |
| + | pinsrd $3, 80+4*4(%rdi), E0 # load to uppermost 32-bit word |
| + | shuf128_32 $0x1B, ABCD, ABCD # DCBA -> ABCD |
| mova128 PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK | |