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NetBSD/sys/crypto/des/arch/i386/des_cbc.S

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/* $NetBSD: des_cbc.S,v 1.1 2001/09/09 11:01:02 tls Exp $ */
/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/*
* Modified from the output of `perl des686.pl elf' by
* Thor Lancelot Simon <tls@netbsd.org>
*/
#include <i386/include/asm.h>
ENTRY(des_ncbc_encrypt)
pushl %ebp
pushl %ebx
pushl %esi
pushl %edi
movl 28(%esp), %ebp
# getting iv ptr from parameter 4
movl 36(%esp), %ebx
movl (%ebx), %esi
movl 4(%ebx), %edi
pushl %edi
pushl %esi
pushl %edi
pushl %esi
movl %esp, %ebx
movl 36(%esp), %esi
movl 40(%esp), %edi
# getting encrypt flag from parameter 5
movl 56(%esp), %ecx
# get and push parameter 5
pushl %ecx
# get and push parameter 3
movl 52(%esp), %eax
pushl %eax
pushl %ebx
cmpl $0, %ecx
jz .L004decrypt
andl $4294967288, %ebp
movl 12(%esp), %eax
movl 16(%esp), %ebx
jz .L005encrypt_finish
.L006encrypt_loop:
movl (%esi), %ecx
movl 4(%esi), %edx
xorl %ecx, %eax
xorl %edx, %ebx
movl %eax, 12(%esp)
movl %ebx, 16(%esp)
call _C_LABEL(des_encrypt1)
movl 12(%esp), %eax
movl 16(%esp), %ebx
movl %eax, (%edi)
movl %ebx, 4(%edi)
addl $8, %esi
addl $8, %edi
subl $8, %ebp
jnz .L006encrypt_loop
.L005encrypt_finish:
movl 56(%esp), %ebp
andl $7, %ebp
jz .L007finish
xorl %ecx, %ecx
xorl %edx, %edx
movl .L008cbc_enc_jmp_table(,%ebp,4),%ebp
jmp *%ebp
.L009ej7:
movb 6(%esi), %dh
sall $8, %edx
.L010ej6:
movb 5(%esi), %dh
.L011ej5:
movb 4(%esi), %dl
.L012ej4:
movl (%esi), %ecx
jmp .L013ejend
.L014ej3:
movb 2(%esi), %ch
sall $8, %ecx
.L015ej2:
movb 1(%esi), %ch
.L016ej1:
movb (%esi), %cl
.L013ejend:
xorl %ecx, %eax
xorl %edx, %ebx
movl %eax, 12(%esp)
movl %ebx, 16(%esp)
call _C_LABEL(des_encrypt1)
movl 12(%esp), %eax
movl 16(%esp), %ebx
movl %eax, (%edi)
movl %ebx, 4(%edi)
jmp .L007finish
.align 16
.L004decrypt:
andl $4294967288, %ebp
movl 20(%esp), %eax
movl 24(%esp), %ebx
jz .L017decrypt_finish
.L018decrypt_loop:
movl (%esi), %eax
movl 4(%esi), %ebx
movl %eax, 12(%esp)
movl %ebx, 16(%esp)
call _C_LABEL(des_encrypt1)
movl 12(%esp), %eax
movl 16(%esp), %ebx
movl 20(%esp), %ecx
movl 24(%esp), %edx
xorl %eax, %ecx
xorl %ebx, %edx
movl (%esi), %eax
movl 4(%esi), %ebx
movl %ecx, (%edi)
movl %edx, 4(%edi)
movl %eax, 20(%esp)
movl %ebx, 24(%esp)
addl $8, %esi
addl $8, %edi
subl $8, %ebp
jnz .L018decrypt_loop
.L017decrypt_finish:
movl 56(%esp), %ebp
andl $7, %ebp
jz .L007finish
movl (%esi), %eax
movl 4(%esi), %ebx
movl %eax, 12(%esp)
movl %ebx, 16(%esp)
call _C_LABEL(des_encrypt1)
movl 12(%esp), %eax
movl 16(%esp), %ebx
movl 20(%esp), %ecx
movl 24(%esp), %edx
xorl %eax, %ecx
xorl %ebx, %edx
movl (%esi), %eax
movl 4(%esi), %ebx
.L019dj7:
rorl $16, %edx
movb %dl, 6(%edi)
shrl $16, %edx
.L020dj6:
movb %dh, 5(%edi)
.L021dj5:
movb %dl, 4(%edi)
.L022dj4:
movl %ecx, (%edi)
jmp .L023djend
.L024dj3:
rorl $16, %ecx
movb %cl, 2(%edi)
sall $16, %ecx
.L025dj2:
movb %ch, 1(%esi)
.L026dj1:
movb %cl, (%esi)
.L023djend:
jmp .L007finish
.align 16
.L007finish:
movl 64(%esp), %ecx
addl $28, %esp
movl %eax, (%ecx)
movl %ebx, 4(%ecx)
popl %edi
popl %esi
popl %ebx
popl %ebp
ret
.align 16
.L008cbc_enc_jmp_table:
.long 0
.long .L016ej1
.long .L015ej2
.long .L014ej3
.long .L012ej4
.long .L011ej5
.long .L010ej6
.long .L009ej7
.align 16
.L027cbc_dec_jmp_table:
.long 0
.long .L026dj1
.long .L025dj2
.long .L024dj3
.long .L022dj4
.long .L021dj5
.long .L020dj6
.long .L019dj7
.L_des_ncbc_encrypt_end:
.size _C_LABEL(des_ncbc_encrypt),.L_des_ncbc_encrypt_end-_C_LABEL(des_ncbc_encrypt)
ENTRY(des_ede3_cbc_encrypt)
pushl %ebp
pushl %ebx
pushl %esi
pushl %edi
movl 28(%esp), %ebp
# getting iv ptr from parameter 6
movl 44(%esp), %ebx
movl (%ebx), %esi
movl 4(%ebx), %edi
pushl %edi
pushl %esi
pushl %edi
pushl %esi
movl %esp, %ebx
movl 36(%esp), %esi
movl 40(%esp), %edi
# getting encrypt flag from parameter 7
movl 64(%esp), %ecx
# get and push parameter 5
movl 56(%esp), %eax
pushl %eax
# get and push parameter 4
movl 56(%esp), %eax
pushl %eax
# get and push parameter 3
movl 56(%esp), %eax
pushl %eax
pushl %ebx
cmpl $0, %ecx
jz .L028decrypt
andl $4294967288, %ebp
movl 16(%esp), %eax
movl 20(%esp), %ebx
jz .L029encrypt_finish
.L030encrypt_loop:
movl (%esi), %ecx
movl 4(%esi), %edx
xorl %ecx, %eax
xorl %edx, %ebx
movl %eax, 16(%esp)
movl %ebx, 20(%esp)
call _C_LABEL(des_encrypt3)
movl 16(%esp), %eax
movl 20(%esp), %ebx
movl %eax, (%edi)
movl %ebx, 4(%edi)
addl $8, %esi
addl $8, %edi
subl $8, %ebp
jnz .L030encrypt_loop
.L029encrypt_finish:
movl 60(%esp), %ebp
andl $7, %ebp
jz .L031finish
xorl %ecx, %ecx
xorl %edx, %edx
movl .L032cbc_enc_jmp_table(,%ebp,4),%ebp
jmp *%ebp
.L033ej7:
movb 6(%esi), %dh
sall $8, %edx
.L034ej6:
movb 5(%esi), %dh
.L035ej5:
movb 4(%esi), %dl
.L036ej4:
movl (%esi), %ecx
jmp .L037ejend
.L038ej3:
movb 2(%esi), %ch
sall $8, %ecx
.L039ej2:
movb 1(%esi), %ch
.L040ej1:
movb (%esi), %cl
.L037ejend:
xorl %ecx, %eax
xorl %edx, %ebx
movl %eax, 16(%esp)
movl %ebx, 20(%esp)
call _C_LABEL(des_encrypt3)
movl 16(%esp), %eax
movl 20(%esp), %ebx
movl %eax, (%edi)
movl %ebx, 4(%edi)
jmp .L031finish
.align 16
.L028decrypt:
andl $4294967288, %ebp
movl 24(%esp), %eax
movl 28(%esp), %ebx
jz .L041decrypt_finish
.L042decrypt_loop:
movl (%esi), %eax
movl 4(%esi), %ebx
movl %eax, 16(%esp)
movl %ebx, 20(%esp)
call _C_LABEL(des_decrypt3)
movl 16(%esp), %eax
movl 20(%esp), %ebx
movl 24(%esp), %ecx
movl 28(%esp), %edx
xorl %eax, %ecx
xorl %ebx, %edx
movl (%esi), %eax
movl 4(%esi), %ebx
movl %ecx, (%edi)
movl %edx, 4(%edi)
movl %eax, 24(%esp)
movl %ebx, 28(%esp)
addl $8, %esi
addl $8, %edi
subl $8, %ebp
jnz .L042decrypt_loop
.L041decrypt_finish:
movl 60(%esp), %ebp
andl $7, %ebp
jz .L031finish
movl (%esi), %eax
movl 4(%esi), %ebx
movl %eax, 16(%esp)
movl %ebx, 20(%esp)
call _C_LABEL(des_decrypt3)
movl 16(%esp), %eax
movl 20(%esp), %ebx
movl 24(%esp), %ecx
movl 28(%esp), %edx
xorl %eax, %ecx
xorl %ebx, %edx
movl (%esi), %eax
movl 4(%esi), %ebx
.L043dj7:
rorl $16, %edx
movb %dl, 6(%edi)
shrl $16, %edx
.L044dj6:
movb %dh, 5(%edi)
.L045dj5:
movb %dl, 4(%edi)
.L046dj4:
movl %ecx, (%edi)
jmp .L047djend
.L048dj3:
rorl $16, %ecx
movb %cl, 2(%edi)
sall $16, %ecx
.L049dj2:
movb %ch, 1(%esi)
.L050dj1:
movb %cl, (%esi)
.L047djend:
jmp .L031finish
.align 16
.L031finish:
movl 76(%esp), %ecx
addl $32, %esp
movl %eax, (%ecx)
movl %ebx, 4(%ecx)
popl %edi
popl %esi
popl %ebx
popl %ebp
ret
.align 16
.L032cbc_enc_jmp_table:
.long 0
.long .L040ej1
.long .L039ej2
.long .L038ej3
.long .L036ej4
.long .L035ej5
.long .L034ej6
.long .L033ej7
.align 16
.L051cbc_dec_jmp_table:
.long 0
.long .L050dj1
.long .L049dj2
.long .L048dj3
.long .L046dj4
.long .L045dj5
.long .L044dj6
.long .L043dj7
.L_des_ede3_cbc_encrypt_end:
.size _C_LABEL(des_ede3_cbc_encrypt),.L_des_ede3_cbc_encrypt_end-_C_LABEL(des_ede3_cbc_encrypt)
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