diff options
Diffstat (limited to 'libbb/hash_md5_sha_x86-64.S')
| -rw-r--r-- | libbb/hash_md5_sha_x86-64.S | 33 |
1 files changed, 10 insertions, 23 deletions
diff --git a/libbb/hash_md5_sha_x86-64.S b/libbb/hash_md5_sha_x86-64.S index e26c46f..287cfe5 100644 --- a/libbb/hash_md5_sha_x86-64.S +++ b/libbb/hash_md5_sha_x86-64.S @@ -24,6 +24,7 @@ sha1_process_block64: # xmm0..xmm3: W[] # xmm4,xmm5: temps # xmm6: current round constant +# xmm7: all round constants # -64(%rsp): area for passing RCONST + W[] from vector to integer units movl 80(%rdi), %eax # a = ctx->hash[0] @@ -32,16 +33,17 @@ sha1_process_block64: movl 92(%rdi), %edx # d = ctx->hash[3] movl 96(%rdi), %ebp # e = ctx->hash[4] - movaps rconst0x5A827999(%rip), %xmm6 + movaps sha1const(%rip), %xmm7 + pshufd $0x00, %xmm7, %xmm6 # Load W[] to xmm registers, byteswapping on the fly. # # For iterations 0..15, we pass W[] in rsi,r8..r14 - # for use in RD1A's instead of spilling them to stack. + # for use in RD1As instead of spilling them to stack. # We lose parallelized addition of RCONST, but LEA - # can do two additions at once, so it's probably a wash. + # can do two additions at once, so it is probably a wash. # (We use rsi instead of rN because this makes two - # LEAs in two first RD1A's shorter by one byte). + # LEAs in two first RD1As shorter by one byte). movq 4*0(%rdi), %rsi movq 4*2(%rdi), %r8 bswapq %rsi @@ -253,7 +255,7 @@ sha1_process_block64: roll $5, %edi # rotl32(a,5) addl %edi, %edx # e += rotl32(a,5) rorl $2, %eax # b = rotl32(b,30) - movaps rconst0x6ED9EBA1(%rip), %xmm6 + pshufd $0x55, %xmm7, %xmm6 # PREP %xmm1 %xmm2 %xmm3 %xmm0 -64+16*1(%rsp) movaps %xmm0, %xmm4 psrldq $4, %xmm4 # rshift by 4 bytes: T1 = ([13],[14],[15],0) @@ -614,7 +616,7 @@ sha1_process_block64: roll $5, %esi # rotl32(a,5) addl %esi, %edx # e += rotl32(a,5) rorl $2, %eax # b = rotl32(b,30) - movaps rconst0x8F1BBCDC(%rip), %xmm6 + pshufd $0xaa, %xmm7, %xmm6 # PREP %xmm2 %xmm3 %xmm0 %xmm1 -64+16*2(%rsp) movaps %xmm1, %xmm4 psrldq $4, %xmm4 # rshift by 4 bytes: T1 = ([13],[14],[15],0) @@ -1001,7 +1003,7 @@ sha1_process_block64: roll $5, %esi # rotl32(a,5) addl %esi, %edx # e += rotl32(a,5) rorl $2, %eax # b = rotl32(b,30) - movaps rconst0xCA62C1D6(%rip), %xmm6 + pshufd $0xff, %xmm7, %xmm6 # PREP %xmm3 %xmm0 %xmm1 %xmm2 -64+16*3(%rsp) movaps %xmm2, %xmm4 psrldq $4, %xmm4 # rshift by 4 bytes: T1 = ([13],[14],[15],0) @@ -1475,25 +1477,10 @@ sha1_process_block64: .section .rodata.cst16.sha1const, "aM", @progbits, 16 .balign 16 -rconst0x5A827999: +sha1const: .long 0x5A827999 - .long 0x5A827999 - .long 0x5A827999 - .long 0x5A827999 -rconst0x6ED9EBA1: - .long 0x6ED9EBA1 - .long 0x6ED9EBA1 - .long 0x6ED9EBA1 .long 0x6ED9EBA1 -rconst0x8F1BBCDC: .long 0x8F1BBCDC - .long 0x8F1BBCDC - .long 0x8F1BBCDC - .long 0x8F1BBCDC -rconst0xCA62C1D6: - .long 0xCA62C1D6 - .long 0xCA62C1D6 - .long 0xCA62C1D6 .long 0xCA62C1D6 #endif |