diff options
| author | Joel Sing <jsing@cvs.openbsd.org> | 2024-11-12 13:51:15 +0000 |
|---|---|---|
| committer | Joel Sing <jsing@cvs.openbsd.org> | 2024-11-12 13:51:15 +0000 |
| commit | bfa37360214a9d9d239e344df4ae3d208835d475 (patch) | |
| tree | 384a169504778fb0f560b23972c8c0d3d5b8ce2c | |
| parent | 47aa670c794c63c58129ebfca9b58112e8899ac8 (diff) | |
Use multipliers for stack offsets and tweak comment.
| -rw-r--r-- | lib/libcrypto/sha/sha256_amd64_generic.S | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/lib/libcrypto/sha/sha256_amd64_generic.S b/lib/libcrypto/sha/sha256_amd64_generic.S index 07078fb0d5a..a7d2f9ddad9 100644 --- a/lib/libcrypto/sha/sha256_amd64_generic.S +++ b/lib/libcrypto/sha/sha256_amd64_generic.S @@ -1,4 +1,4 @@ -/* $OpenBSD: sha256_amd64_generic.S,v 1.1 2024/11/08 15:09:48 jsing Exp $ */ +/* $OpenBSD: sha256_amd64_generic.S,v 1.2 2024/11/12 13:51:14 jsing Exp $ */ /* * Copyright (c) 2024 Joel Sing <jsing@openbsd.org> * @@ -164,17 +164,17 @@ sha256_block_generic: pushq %r14 pushq %r15 - /* Allocate space for message schedule and context pointer. */ + /* Allocate space for message schedule, context pointer and end of message. */ movq %rsp, %rax - subq $(64+32), %rsp + subq $(64+3*8), %rsp andq $~63, %rsp - movq %rax, (64+16)(%rsp) - movq ctx, (64+8)(%rsp) + movq %rax, (64+2*8)(%rsp) + movq ctx, (64+1*8)(%rsp) /* Compute and store end of message. */ shlq $6, num leaq (in, num, 1), %rbx - movq %rbx, (64+0)(%rsp) + movq %rbx, (64+0*8)(%rsp) /* Address of SHA-256 constants. */ leaq K256(%rip), k256 @@ -238,7 +238,7 @@ sha256_block_generic: cmp $64, round jb .Lblock_loop16 - movq (64+8)(%rsp), ctx + movq (64+1*8)(%rsp), ctx /* Add intermediate state to hash state. */ addl (0*4)(ctx), hs0 @@ -261,10 +261,10 @@ sha256_block_generic: movl hs7, (7*4)(ctx) addq $64, in - cmpq (64+0)(%rsp), in + cmpq (64+0*8)(%rsp), in jb .Lblock_loop0 - movq (64+16)(%rsp), %rsp + movq (64+2*8)(%rsp), %rsp /* Restore callee save registers. */ popq %r15 |