[src/trunk]: src/lib/libcrypto/arch/i386 avoid bswapl, which is post-i486 (in...

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/704c3eff8cae
branches:  trunk
changeset: 555299:704c3eff8cae
user:      itojun <itojun%NetBSD.org@localhost>
date:      Thu Nov 13 19:36:31 2003 +0000

description:
avoid bswapl, which is post-i486 (including i486) insn.  markus@openbsd

diffstat:

 lib/libcrypto/arch/i386/sha1_586.S |  98 +++++++++++++++++++++++++------------
 1 files changed, 65 insertions(+), 33 deletions(-)

diffs (140 lines):

diff -r c53976fe8a6b -r 704c3eff8cae lib/libcrypto/arch/i386/sha1_586.S
--- a/lib/libcrypto/arch/i386/sha1_586.S        Thu Nov 13 15:53:31 2003 +0000
+++ b/lib/libcrypto/arch/i386/sha1_586.S        Thu Nov 13 19:36:31 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sha1_586.S,v 1.1 2003/11/13 02:10:00 itojun Exp $      */
+/*     $NetBSD: sha1_586.S,v 1.2 2003/11/13 19:36:31 itojun Exp $      */
 
 /* Copyright (C) 1995-1998 Eric Young (eay%cryptsoft.com@localhost)
  * All rights reserved.
@@ -85,66 +85,98 @@
        /* First, load the words onto the stack in network byte order */
        movl    (%esi),         %eax
        movl    4(%esi),        %ecx
-.byte 15
-.byte 200              /* bswapl  %eax */
-.byte 15
-.byte 201              /* bswapl  %ecx */
+       /* bswapl eax */
+       xchg    %al,            %ah
+       rorl    $16,            %eax
+       xchg    %al,            %ah
+       /* bswapl ecx */
+       xchg    %cl,            %ch
+       rorl    $16,            %ecx
+       xchg    %cl,            %ch
        movl    %eax,           (%esp)
        movl    %ecx,           4(%esp)
        movl    8(%esi),        %eax
        movl    12(%esi),       %ecx
-.byte 15
-.byte 200              /* bswapl  %eax */
-.byte 15
-.byte 201              /* bswapl  %ecx */
+       /* bswapl eax */
+       xchg    %al,            %ah
+       rorl    $16,            %eax
+       xchg    %al,            %ah
+       /* bswapl ecx */
+       xchg    %cl,            %ch
+       rorl    $16,            %ecx
+       xchg    %cl,            %ch
        movl    %eax,           8(%esp)
        movl    %ecx,           12(%esp)
        movl    16(%esi),       %eax
        movl    20(%esi),       %ecx
-.byte 15
-.byte 200              /* bswapl  %eax */
-.byte 15
-.byte 201              /* bswapl  %ecx */
+       /* bswapl eax */
+       xchg    %al,            %ah
+       rorl    $16,            %eax
+       xchg    %al,            %ah
+       /* bswapl ecx */
+       xchg    %cl,            %ch
+       rorl    $16,            %ecx
+       xchg    %cl,            %ch
        movl    %eax,           16(%esp)
        movl    %ecx,           20(%esp)
        movl    24(%esi),       %eax
        movl    28(%esi),       %ecx
-.byte 15
-.byte 200              /* bswapl  %eax */
-.byte 15
-.byte 201              /* bswapl  %ecx */
+       /* bswapl eax */
+       xchg    %al,            %ah
+       rorl    $16,            %eax
+       xchg    %al,            %ah
+       /* bswapl ecx */
+       xchg    %cl,            %ch
+       rorl    $16,            %ecx
+       xchg    %cl,            %ch
        movl    %eax,           24(%esp)
        movl    %ecx,           28(%esp)
        movl    32(%esi),       %eax
        movl    36(%esi),       %ecx
-.byte 15
-.byte 200              /* bswapl  %eax */
-.byte 15
-.byte 201              /* bswapl  %ecx */
+       /* bswapl eax */
+       xchg    %al,            %ah
+       rorl    $16,            %eax
+       xchg    %al,            %ah
+       /* bswapl ecx */
+       xchg    %cl,            %ch
+       rorl    $16,            %ecx
+       xchg    %cl,            %ch
        movl    %eax,           32(%esp)
        movl    %ecx,           36(%esp)
        movl    40(%esi),       %eax
        movl    44(%esi),       %ecx
-.byte 15
-.byte 200              /* bswapl  %eax */
-.byte 15
-.byte 201              /* bswapl  %ecx */
+       /* bswapl eax */
+       xchg    %al,            %ah
+       rorl    $16,            %eax
+       xchg    %al,            %ah
+       /* bswapl ecx */
+       xchg    %cl,            %ch
+       rorl    $16,            %ecx
+       xchg    %cl,            %ch
        movl    %eax,           40(%esp)
        movl    %ecx,           44(%esp)
        movl    48(%esi),       %eax
        movl    52(%esi),       %ecx
-.byte 15
-.byte 200              /* bswapl  %eax */
-.byte 15
-.byte 201              /* bswapl  %ecx */
+       /* bswapl eax */
+       xchg    %al,            %ah
+       rorl    $16,            %eax
+       xchg    %al,            %ah
+       /* bswapl ecx */
+       xchg    %cl,            %ch
+       rorl    $16,            %ecx
+       xchg    %cl,            %ch
        movl    %eax,           48(%esp)
        movl    %ecx,           52(%esp)
        movl    56(%esi),       %eax
        movl    60(%esi),       %ecx
-.byte 15
-.byte 200              /* bswapl  %eax */
-.byte 15
-.byte 201              /* bswapl  %ecx */
+       /* bswapl eax */
+       xchg    %al,            %ah
+       rorl    $16,            %eax
+       xchg    %al,            %ah
+       /* bswapl ecx */
+       xchg    %cl,            %ch
+       rorl    $16,            %ecx
+       xchg    %cl,            %ch
        movl    %eax,           56(%esp)
        movl    %ecx,           60(%esp)
        /* We now have the X array on the stack */