diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2023-03-29 16:17:00 +0300 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2023-03-29 16:50:40 +0300 |
| commit | 8d198665a0d09c3f22f3a12234809f46b1c2b04a (patch) | |
| tree | 5ff1358a6e7ce7489793dd2cbc6fd5595ebd1104 | |
| parent | c0bb90e2fe56b74af34047d446e7758172bbf4b7 (diff) | |
libbb/sha: fix sha-NI instruction detection
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | libbb/hash_md5_sha.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libbb/hash_md5_sha.c b/libbb/hash_md5_sha.c index 880ffab01..bbe58c77b 100644 --- a/libbb/hash_md5_sha.c +++ b/libbb/hash_md5_sha.c @@ -1178,7 +1178,7 @@ void FAST_FUNC sha1_begin(sha1_ctx_t *ctx) if (!shaNI) { unsigned eax = 7, ebx = ebx, ecx = 0, edx = edx; cpuid(&eax, &ebx, &ecx, &edx); - shaNI = ((ebx >> 29) << 1) - 1; + shaNI = ((ebx >> 28) & 2) - 1; /* bit 29 -> 1 or -1 */ } if (shaNI > 0) ctx->process_block = sha1_process_block64_shaNI; @@ -1232,7 +1232,7 @@ void FAST_FUNC sha256_begin(sha256_ctx_t *ctx) if (!shaNI) { unsigned eax = 7, ebx = ebx, ecx = 0, edx = edx; cpuid(&eax, &ebx, &ecx, &edx); - shaNI = ((ebx >> 29) << 1) - 1; + shaNI = ((ebx >> 28) & 2) - 1; /* bit 29 -> 1 or -1 */ } if (shaNI > 0) ctx->process_block = sha256_process_block64_shaNI; |