sha/asm/sha512-armv4.pl: adapt for use in Linux kernel context.
Follow-up to sha256-armv4.pl in cooperation with Ard Biesheuvel (Linaro) and Sami Tolvanen (Google). (Imported from upstream's b1a5d1c652086257930a1f62ae51c9cdee654b2c.) Change-Id: Ibc4f289cc8f499924ade8d6b8d494f53bc08bda7 Reviewed-on: https://boringssl-review.googlesource.com/4467 Reviewed-by: Adam Langley <agl@google.com>
This commit is contained in:
David Benjamin
Adam Langley
parent
0fd37062b6
commit
7af16eb49f
@ -5,6 +5,8 @@
|
||||
# project. The module is, however, dual licensed under OpenSSL and
|
||||
# CRYPTOGAMS licenses depending on where you obtain it. For further
|
||||
# details see http://www.openssl.org/~appro/cryptogams/.
|
||||
#
|
||||
# Permission to use under GPL terms is granted.
|
||||
# ====================================================================
|
||||
|
||||
# SHA512 block procedure for ARMv4. September 2007.
|
||||
@ -136,6 +138,9 @@ $code.=<<___;
|
||||
teq $t0,#$magic
|
||||
|
||||
ldr $t3,[sp,#$Coff+0] @ c.lo
|
||||
#if __ARM_ARCH__>=7
|
||||
it eq @ Thumb2 thing, sanity check in ARM
|
||||
#endif
|
||||
orreq $Ktbl,$Ktbl,#1
|
||||
@ Sigma0(x) (ROTR((x),28) ^ ROTR((x),34) ^ ROTR((x),39))
|
||||
@ LO lo>>28^hi<<4 ^ hi>>2^lo<<30 ^ hi>>7^lo<<25
|
||||
@ -173,7 +178,17 @@ $code.=<<___;
|
||||
___
|
||||
}
|
||||
$code=<<___;
|
||||
#include "arm_arch.h"
|
||||
#ifndef __KERNEL__
|
||||
# include "arm_arch.h"
|
||||
# define VFP_ABI_PUSH vstmdb sp!,{d8-d15}
|
||||
# define VFP_ABI_POP vldmia sp!,{d8-d15}
|
||||
#else
|
||||
# define __ARM_ARCH__ __LINUX_ARM_ARCH__
|
||||
# define __ARM_MAX_ARCH__ 7
|
||||
# define VFP_ABI_PUSH
|
||||
# define VFP_ABI_POP
|
||||
#endif
|
||||
|
||||
#ifdef __ARMEL__
|
||||
# define LO 0
|
||||
# define HI 4
|
||||
@ -185,7 +200,18 @@ $code=<<___;
|
||||
#endif
|
||||
|
||||
.text
|
||||
#if __ARM_ARCH__<7
|
||||
.code 32
|
||||
#else
|
||||
.syntax unified
|
||||
# ifdef __thumb2__
|
||||
# define adrl adr
|
||||
.thumb
|
||||
# else
|
||||
.code 32
|
||||
# endif
|
||||
#endif
|
||||
|
||||
.type K512,%object
|
||||
.align 5
|
||||
K512:
|
||||
@ -230,7 +256,7 @@ WORD64(0x3c9ebe0a,0x15c9bebc, 0x431d67c4,0x9c100d4c)
|
||||
WORD64(0x4cc5d4be,0xcb3e42b6, 0x597f299c,0xfc657e2a)
|
||||
WORD64(0x5fcb6fab,0x3ad6faec, 0x6c44198c,0x4a475817)
|
||||
.size K512,.-K512
|
||||
#if __ARM_MAX_ARCH__>=7
|
||||
#if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__)
|
||||
.LOPENSSL_armcap:
|
||||
.word OPENSSL_armcap_P-sha512_block_data_order
|
||||
.skip 32-4
|
||||
@ -241,14 +267,18 @@ WORD64(0x5fcb6fab,0x3ad6faec, 0x6c44198c,0x4a475817)
|
||||
.global sha512_block_data_order
|
||||
.type sha512_block_data_order,%function
|
||||
sha512_block_data_order:
|
||||
#if __ARM_ARCH__<7
|
||||
sub r3,pc,#8 @ sha512_block_data_order
|
||||
add $len,$inp,$len,lsl#7 @ len to point at the end of inp
|
||||
#if __ARM_MAX_ARCH__>=7
|
||||
#else
|
||||
adr r3,sha512_block_data_order
|
||||
#endif
|
||||
#if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__)
|
||||
ldr r12,.LOPENSSL_armcap
|
||||
ldr r12,[r3,r12] @ OPENSSL_armcap_P
|
||||
tst r12,#1
|
||||
bne .LNEON
|
||||
#endif
|
||||
add $len,$inp,$len,lsl#7 @ len to point at the end of inp
|
||||
stmdb sp!,{r4-r12,lr}
|
||||
sub $Ktbl,r3,#672 @ K512
|
||||
sub sp,sp,#9*8
|
||||
@ -362,6 +392,9 @@ $code.=<<___;
|
||||
___
|
||||
&BODY_00_15(0x17);
|
||||
$code.=<<___;
|
||||
#if __ARM_ARCH__>=7
|
||||
ittt eq @ Thumb2 thing, sanity check in ARM
|
||||
#endif
|
||||
ldreq $t0,[sp,#`$Xoff+8*(16-1)`+0]
|
||||
ldreq $t1,[sp,#`$Xoff+8*(16-1)`+4]
|
||||
beq .L16_79
|
||||
@ -446,6 +479,7 @@ $code.=<<___;
|
||||
moveq pc,lr @ be binary compatible with V4, yet
|
||||
bx lr @ interoperable with Thumb ISA:-)
|
||||
#endif
|
||||
.size sha512_block_data_order,.-sha512_block_data_order
|
||||
___
|
||||
|
||||
{
|
||||
@ -552,11 +586,15 @@ $code.=<<___;
|
||||
.arch armv7-a
|
||||
.fpu neon
|
||||
|
||||
.global sha512_block_data_order_neon
|
||||
.type sha512_block_data_order_neon,%function
|
||||
.align 4
|
||||
sha512_block_data_order_neon:
|
||||
.LNEON:
|
||||
dmb @ errata #451034 on early Cortex A8
|
||||
vstmdb sp!,{d8-d15} @ ABI specification says so
|
||||
sub $Ktbl,r3,#672 @ K512
|
||||
add $len,$inp,$len,lsl#7 @ len to point at the end of inp
|
||||
VFP_ABI_PUSH
|
||||
adrl $Ktbl,K512
|
||||
vldmia $ctx,{$A-$H} @ load context
|
||||
.Loop_neon:
|
||||
___
|
||||
@ -581,16 +619,16 @@ $code.=<<___;
|
||||
sub $Ktbl,#640 @ rewind K512
|
||||
bne .Loop_neon
|
||||
|
||||
vldmia sp!,{d8-d15} @ epilogue
|
||||
VFP_ABI_POP
|
||||
ret @ bx lr
|
||||
.size sha512_block_data_order_neon,.-sha512_block_data_order_neon
|
||||
#endif
|
||||
___
|
||||
}
|
||||
$code.=<<___;
|
||||
.size sha512_block_data_order,.-sha512_block_data_order
|
||||
.asciz "SHA512 block transform for ARMv4/NEON, CRYPTOGAMS by <appro\@openssl.org>"
|
||||
.align 2
|
||||
#if __ARM_MAX_ARCH__>=7
|
||||
#if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__)
|
||||
.comm OPENSSL_armcap_P,4,4
|
||||
.hidden OPENSSL_armcap_P
|
||||
#endif
|
||||
@ -599,5 +637,14 @@ ___
|
||||
$code =~ s/\`([^\`]*)\`/eval $1/gem;
|
||||
$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4
|
||||
$code =~ s/\bret\b/bx lr/gm;
|
||||
|
||||
open SELF,$0;
|
||||
while(<SELF>) {
|
||||
next if (/^#!/);
|
||||
last if (!s/^#/@/ and !/^$/);
|
||||
print;
|
||||
}
|
||||
close SELF;
|
||||
|
||||
print $code;
|
||||
close STDOUT; # enforce flush
|
||||
|
||||
Loading…
Reference in New Issue
Block a user