linux/arch/x86/crypto/twofish-i586-asm_32.S
Jiri Slaby 6d685e5318 x86/asm/32: Change all ENTRY+ENDPROC to SYM_FUNC_*
These are all functions which are invoked from elsewhere, so annotate
them as global using the new SYM_FUNC_START and their ENDPROC's by
SYM_FUNC_END.

Now, ENTRY/ENDPROC can be forced to be undefined on X86, so do so.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Allison Randal <allison@lohutok.net>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Andy Shevchenko <andy@infradead.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Bill Metzenthen <billm@melbpc.org.au>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-crypto@vger.kernel.org
Cc: linux-efi <linux-efi@vger.kernel.org>
Cc: linux-efi@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: platform-driver-x86@vger.kernel.org
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20191011115108.12392-28-jslaby@suse.cz
2019-10-18 12:03:43 +02:00

322 lines
8.2 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0-or-later */
/***************************************************************************
* Copyright (C) 2006 by Joachim Fritschi, <jfritschi@freenet.de> *
* *
***************************************************************************/
.file "twofish-i586-asm.S"
.text
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
/* return address at 0 */
#define in_blk 12 /* input byte array address parameter*/
#define out_blk 8 /* output byte array address parameter*/
#define ctx 4 /* Twofish context structure */
#define a_offset 0
#define b_offset 4
#define c_offset 8
#define d_offset 12
/* Structure of the crypto context struct*/
#define s0 0 /* S0 Array 256 Words each */
#define s1 1024 /* S1 Array */
#define s2 2048 /* S2 Array */
#define s3 3072 /* S3 Array */
#define w 4096 /* 8 whitening keys (word) */
#define k 4128 /* key 1-32 ( word ) */
/* define a few register aliases to allow macro substitution */
#define R0D %eax
#define R0B %al
#define R0H %ah
#define R1D %ebx
#define R1B %bl
#define R1H %bh
#define R2D %ecx
#define R2B %cl
#define R2H %ch
#define R3D %edx
#define R3B %dl
#define R3H %dh
/* performs input whitening */
#define input_whitening(src,context,offset)\
xor w+offset(context), src;
/* performs input whitening */
#define output_whitening(src,context,offset)\
xor w+16+offset(context), src;
/*
* a input register containing a (rotated 16)
* b input register containing b
* c input register containing c
* d input register containing d (already rol $1)
* operations on a and b are interleaved to increase performance
*/
#define encrypt_round(a,b,c,d,round)\
push d ## D;\
movzx b ## B, %edi;\
mov s1(%ebp,%edi,4),d ## D;\
movzx a ## B, %edi;\
mov s2(%ebp,%edi,4),%esi;\
movzx b ## H, %edi;\
ror $16, b ## D;\
xor s2(%ebp,%edi,4),d ## D;\
movzx a ## H, %edi;\
ror $16, a ## D;\
xor s3(%ebp,%edi,4),%esi;\
movzx b ## B, %edi;\
xor s3(%ebp,%edi,4),d ## D;\
movzx a ## B, %edi;\
xor (%ebp,%edi,4), %esi;\
movzx b ## H, %edi;\
ror $15, b ## D;\
xor (%ebp,%edi,4), d ## D;\
movzx a ## H, %edi;\
xor s1(%ebp,%edi,4),%esi;\
pop %edi;\
add d ## D, %esi;\
add %esi, d ## D;\
add k+round(%ebp), %esi;\
xor %esi, c ## D;\
rol $15, c ## D;\
add k+4+round(%ebp),d ## D;\
xor %edi, d ## D;
/*
* a input register containing a (rotated 16)
* b input register containing b
* c input register containing c
* d input register containing d (already rol $1)
* operations on a and b are interleaved to increase performance
* last round has different rotations for the output preparation
*/
#define encrypt_last_round(a,b,c,d,round)\
push d ## D;\
movzx b ## B, %edi;\
mov s1(%ebp,%edi,4),d ## D;\
movzx a ## B, %edi;\
mov s2(%ebp,%edi,4),%esi;\
movzx b ## H, %edi;\
ror $16, b ## D;\
xor s2(%ebp,%edi,4),d ## D;\
movzx a ## H, %edi;\
ror $16, a ## D;\
xor s3(%ebp,%edi,4),%esi;\
movzx b ## B, %edi;\
xor s3(%ebp,%edi,4),d ## D;\
movzx a ## B, %edi;\
xor (%ebp,%edi,4), %esi;\
movzx b ## H, %edi;\
ror $16, b ## D;\
xor (%ebp,%edi,4), d ## D;\
movzx a ## H, %edi;\
xor s1(%ebp,%edi,4),%esi;\
pop %edi;\
add d ## D, %esi;\
add %esi, d ## D;\
add k+round(%ebp), %esi;\
xor %esi, c ## D;\
ror $1, c ## D;\
add k+4+round(%ebp),d ## D;\
xor %edi, d ## D;
/*
* a input register containing a
* b input register containing b (rotated 16)
* c input register containing c
* d input register containing d (already rol $1)
* operations on a and b are interleaved to increase performance
*/
#define decrypt_round(a,b,c,d,round)\
push c ## D;\
movzx a ## B, %edi;\
mov (%ebp,%edi,4), c ## D;\
movzx b ## B, %edi;\
mov s3(%ebp,%edi,4),%esi;\
movzx a ## H, %edi;\
ror $16, a ## D;\
xor s1(%ebp,%edi,4),c ## D;\
movzx b ## H, %edi;\
ror $16, b ## D;\
xor (%ebp,%edi,4), %esi;\
movzx a ## B, %edi;\
xor s2(%ebp,%edi,4),c ## D;\
movzx b ## B, %edi;\
xor s1(%ebp,%edi,4),%esi;\
movzx a ## H, %edi;\
ror $15, a ## D;\
xor s3(%ebp,%edi,4),c ## D;\
movzx b ## H, %edi;\
xor s2(%ebp,%edi,4),%esi;\
pop %edi;\
add %esi, c ## D;\
add c ## D, %esi;\
add k+round(%ebp), c ## D;\
xor %edi, c ## D;\
add k+4+round(%ebp),%esi;\
xor %esi, d ## D;\
rol $15, d ## D;
/*
* a input register containing a
* b input register containing b (rotated 16)
* c input register containing c
* d input register containing d (already rol $1)
* operations on a and b are interleaved to increase performance
* last round has different rotations for the output preparation
*/
#define decrypt_last_round(a,b,c,d,round)\
push c ## D;\
movzx a ## B, %edi;\
mov (%ebp,%edi,4), c ## D;\
movzx b ## B, %edi;\
mov s3(%ebp,%edi,4),%esi;\
movzx a ## H, %edi;\
ror $16, a ## D;\
xor s1(%ebp,%edi,4),c ## D;\
movzx b ## H, %edi;\
ror $16, b ## D;\
xor (%ebp,%edi,4), %esi;\
movzx a ## B, %edi;\
xor s2(%ebp,%edi,4),c ## D;\
movzx b ## B, %edi;\
xor s1(%ebp,%edi,4),%esi;\
movzx a ## H, %edi;\
ror $16, a ## D;\
xor s3(%ebp,%edi,4),c ## D;\
movzx b ## H, %edi;\
xor s2(%ebp,%edi,4),%esi;\
pop %edi;\
add %esi, c ## D;\
add c ## D, %esi;\
add k+round(%ebp), c ## D;\
xor %edi, c ## D;\
add k+4+round(%ebp),%esi;\
xor %esi, d ## D;\
ror $1, d ## D;
SYM_FUNC_START(twofish_enc_blk)
push %ebp /* save registers according to calling convention*/
push %ebx
push %esi
push %edi
mov ctx + 16(%esp), %ebp /* abuse the base pointer: set new base
* pointer to the ctx address */
mov in_blk+16(%esp),%edi /* input address in edi */
mov (%edi), %eax
mov b_offset(%edi), %ebx
mov c_offset(%edi), %ecx
mov d_offset(%edi), %edx
input_whitening(%eax,%ebp,a_offset)
ror $16, %eax
input_whitening(%ebx,%ebp,b_offset)
input_whitening(%ecx,%ebp,c_offset)
input_whitening(%edx,%ebp,d_offset)
rol $1, %edx
encrypt_round(R0,R1,R2,R3,0);
encrypt_round(R2,R3,R0,R1,8);
encrypt_round(R0,R1,R2,R3,2*8);
encrypt_round(R2,R3,R0,R1,3*8);
encrypt_round(R0,R1,R2,R3,4*8);
encrypt_round(R2,R3,R0,R1,5*8);
encrypt_round(R0,R1,R2,R3,6*8);
encrypt_round(R2,R3,R0,R1,7*8);
encrypt_round(R0,R1,R2,R3,8*8);
encrypt_round(R2,R3,R0,R1,9*8);
encrypt_round(R0,R1,R2,R3,10*8);
encrypt_round(R2,R3,R0,R1,11*8);
encrypt_round(R0,R1,R2,R3,12*8);
encrypt_round(R2,R3,R0,R1,13*8);
encrypt_round(R0,R1,R2,R3,14*8);
encrypt_last_round(R2,R3,R0,R1,15*8);
output_whitening(%eax,%ebp,c_offset)
output_whitening(%ebx,%ebp,d_offset)
output_whitening(%ecx,%ebp,a_offset)
output_whitening(%edx,%ebp,b_offset)
mov out_blk+16(%esp),%edi;
mov %eax, c_offset(%edi)
mov %ebx, d_offset(%edi)
mov %ecx, (%edi)
mov %edx, b_offset(%edi)
pop %edi
pop %esi
pop %ebx
pop %ebp
mov $1, %eax
ret
SYM_FUNC_END(twofish_enc_blk)
SYM_FUNC_START(twofish_dec_blk)
push %ebp /* save registers according to calling convention*/
push %ebx
push %esi
push %edi
mov ctx + 16(%esp), %ebp /* abuse the base pointer: set new base
* pointer to the ctx address */
mov in_blk+16(%esp),%edi /* input address in edi */
mov (%edi), %eax
mov b_offset(%edi), %ebx
mov c_offset(%edi), %ecx
mov d_offset(%edi), %edx
output_whitening(%eax,%ebp,a_offset)
output_whitening(%ebx,%ebp,b_offset)
ror $16, %ebx
output_whitening(%ecx,%ebp,c_offset)
output_whitening(%edx,%ebp,d_offset)
rol $1, %ecx
decrypt_round(R0,R1,R2,R3,15*8);
decrypt_round(R2,R3,R0,R1,14*8);
decrypt_round(R0,R1,R2,R3,13*8);
decrypt_round(R2,R3,R0,R1,12*8);
decrypt_round(R0,R1,R2,R3,11*8);
decrypt_round(R2,R3,R0,R1,10*8);
decrypt_round(R0,R1,R2,R3,9*8);
decrypt_round(R2,R3,R0,R1,8*8);
decrypt_round(R0,R1,R2,R3,7*8);
decrypt_round(R2,R3,R0,R1,6*8);
decrypt_round(R0,R1,R2,R3,5*8);
decrypt_round(R2,R3,R0,R1,4*8);
decrypt_round(R0,R1,R2,R3,3*8);
decrypt_round(R2,R3,R0,R1,2*8);
decrypt_round(R0,R1,R2,R3,1*8);
decrypt_last_round(R2,R3,R0,R1,0);
input_whitening(%eax,%ebp,c_offset)
input_whitening(%ebx,%ebp,d_offset)
input_whitening(%ecx,%ebp,a_offset)
input_whitening(%edx,%ebp,b_offset)
mov out_blk+16(%esp),%edi;
mov %eax, c_offset(%edi)
mov %ebx, d_offset(%edi)
mov %ecx, (%edi)
mov %edx, b_offset(%edi)
pop %edi
pop %esi
pop %ebx
pop %ebp
mov $1, %eax
ret
SYM_FUNC_END(twofish_dec_blk)