summaryrefslogtreecommitdiff
path: root/openssl/crypto/sha/asm/sha1-thumb.pl
diff options
context:
space:
mode:
Diffstat (limited to 'openssl/crypto/sha/asm/sha1-thumb.pl')
-rw-r--r--openssl/crypto/sha/asm/sha1-thumb.pl259
1 files changed, 0 insertions, 259 deletions
diff --git a/openssl/crypto/sha/asm/sha1-thumb.pl b/openssl/crypto/sha/asm/sha1-thumb.pl
deleted file mode 100644
index 7c9ea9b0..00000000
--- a/openssl/crypto/sha/asm/sha1-thumb.pl
+++ /dev/null
@@ -1,259 +0,0 @@
-#!/usr/bin/env perl
-
-# ====================================================================
-# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
-# 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/.
-# ====================================================================
-
-# sha1_block for Thumb.
-#
-# January 2007.
-#
-# The code does not present direct interest to OpenSSL, because of low
-# performance. Its purpose is to establish _size_ benchmark. Pretty
-# useless one I must say, because 30% or 88 bytes larger ARMv4 code
-# [avialable on demand] is almost _twice_ as fast. It should also be
-# noted that in-lining of .Lcommon and .Lrotate improves performance
-# by over 40%, while code increases by only 10% or 32 bytes. But once
-# again, the goal was to establish _size_ benchmark, not performance.
-
-$output=shift;
-open STDOUT,">$output";
-
-$inline=0;
-#$cheat_on_binutils=1;
-
-$t0="r0";
-$t1="r1";
-$t2="r2";
-$a="r3";
-$b="r4";
-$c="r5";
-$d="r6";
-$e="r7";
-$K="r8"; # "upper" registers can be used in add/sub and mov insns
-$ctx="r9";
-$inp="r10";
-$len="r11";
-$Xi="r12";
-
-sub common {
-<<___;
- sub $t0,#4
- ldr $t1,[$t0]
- add $e,$K @ E+=K_xx_xx
- lsl $t2,$a,#5
- add $t2,$e
- lsr $e,$a,#27
- add $t2,$e @ E+=ROR(A,27)
- add $t2,$t1 @ E+=X[i]
-___
-}
-sub rotate {
-<<___;
- mov $e,$d @ E=D
- mov $d,$c @ D=C
- lsl $c,$b,#30
- lsr $b,$b,#2
- orr $c,$b @ C=ROR(B,2)
- mov $b,$a @ B=A
- add $a,$t2,$t1 @ A=E+F_xx_xx(B,C,D)
-___
-}
-
-sub BODY_00_19 {
-$code.=$inline?&common():"\tbl .Lcommon\n";
-$code.=<<___;
- mov $t1,$c
- eor $t1,$d
- and $t1,$b
- eor $t1,$d @ F_00_19(B,C,D)
-___
-$code.=$inline?&rotate():"\tbl .Lrotate\n";
-}
-
-sub BODY_20_39 {
-$code.=$inline?&common():"\tbl .Lcommon\n";
-$code.=<<___;
- mov $t1,$b
- eor $t1,$c
- eor $t1,$d @ F_20_39(B,C,D)
-___
-$code.=$inline?&rotate():"\tbl .Lrotate\n";
-}
-
-sub BODY_40_59 {
-$code.=$inline?&common():"\tbl .Lcommon\n";
-$code.=<<___;
- mov $t1,$b
- and $t1,$c
- mov $e,$b
- orr $e,$c
- and $e,$d
- orr $t1,$e @ F_40_59(B,C,D)
-___
-$code.=$inline?&rotate():"\tbl .Lrotate\n";
-}
-
-$code=<<___;
-.text
-.code 16
-
-.global sha1_block_data_order
-.type sha1_block_data_order,%function
-
-.align 2
-sha1_block_data_order:
-___
-if ($cheat_on_binutils) {
-$code.=<<___;
-.code 32
- add r3,pc,#1
- bx r3 @ switch to Thumb ISA
-.code 16
-___
-}
-$code.=<<___;
- push {r4-r7}
- mov r3,r8
- mov r4,r9
- mov r5,r10
- mov r6,r11
- mov r7,r12
- push {r3-r7,lr}
- lsl r2,#6
- mov $ctx,r0 @ save context
- mov $inp,r1 @ save inp
- mov $len,r2 @ save len
- add $len,$inp @ $len to point at inp end
-
-.Lloop:
- mov $Xi,sp
- mov $t2,sp
- sub $t2,#16*4 @ [3]
-.LXload:
- ldrb $a,[$t1,#0] @ $t1 is r1 and holds inp
- ldrb $b,[$t1,#1]
- ldrb $c,[$t1,#2]
- ldrb $d,[$t1,#3]
- lsl $a,#24
- lsl $b,#16
- lsl $c,#8
- orr $a,$b
- orr $a,$c
- orr $a,$d
- add $t1,#4
- push {$a}
- cmp sp,$t2
- bne .LXload @ [+14*16]
-
- mov $inp,$t1 @ update $inp
- sub $t2,#32*4
- sub $t2,#32*4
- mov $e,#31 @ [+4]
-.LXupdate:
- ldr $a,[sp,#15*4]
- ldr $b,[sp,#13*4]
- ldr $c,[sp,#7*4]
- ldr $d,[sp,#2*4]
- eor $a,$b
- eor $a,$c
- eor $a,$d
- ror $a,$e
- push {$a}
- cmp sp,$t2
- bne .LXupdate @ [+(11+1)*64]
-
- ldmia $t0!,{$a,$b,$c,$d,$e} @ $t0 is r0 and holds ctx
- mov $t0,$Xi
-
- ldr $t2,.LK_00_19
- mov $t1,$t0
- sub $t1,#20*4
- mov $Xi,$t1
- mov $K,$t2 @ [+7+4]
-.L_00_19:
-___
- &BODY_00_19();
-$code.=<<___;
- cmp $Xi,$t0
- bne .L_00_19 @ [+(2+9+4+2+8+2)*20]
-
- ldr $t2,.LK_20_39
- mov $t1,$t0
- sub $t1,#20*4
- mov $Xi,$t1
- mov $K,$t2 @ [+5]
-.L_20_39_or_60_79:
-___
- &BODY_20_39();
-$code.=<<___;
- cmp $Xi,$t0
- bne .L_20_39_or_60_79 @ [+(2+9+3+2+8+2)*20*2]
- cmp sp,$t0
- beq .Ldone @ [+2]
-
- ldr $t2,.LK_40_59
- mov $t1,$t0
- sub $t1,#20*4
- mov $Xi,$t1
- mov $K,$t2 @ [+5]
-.L_40_59:
-___
- &BODY_40_59();
-$code.=<<___;
- cmp $Xi,$t0
- bne .L_40_59 @ [+(2+9+6+2+8+2)*20]
-
- ldr $t2,.LK_60_79
- mov $Xi,sp
- mov $K,$t2
- b .L_20_39_or_60_79 @ [+4]
-.Ldone:
- mov $t0,$ctx
- ldr $t1,[$t0,#0]
- ldr $t2,[$t0,#4]
- add $a,$t1
- ldr $t1,[$t0,#8]
- add $b,$t2
- ldr $t2,[$t0,#12]
- add $c,$t1
- ldr $t1,[$t0,#16]
- add $d,$t2
- add $e,$t1
- stmia $t0!,{$a,$b,$c,$d,$e} @ [+20]
-
- add sp,#80*4 @ deallocate stack frame
- mov $t0,$ctx @ restore ctx
- mov $t1,$inp @ restore inp
- cmp $t1,$len
- beq .Lexit
- b .Lloop @ [+6] total 3212 cycles
-.Lexit:
- pop {r2-r7}
- mov r8,r2
- mov r9,r3
- mov r10,r4
- mov r11,r5
- mov r12,r6
- mov lr,r7
- pop {r4-r7}
- bx lr
-.align 2
-___
-$code.=".Lcommon:\n".&common()."\tmov pc,lr\n" if (!$inline);
-$code.=".Lrotate:\n".&rotate()."\tmov pc,lr\n" if (!$inline);
-$code.=<<___;
-.align 2
-.LK_00_19: .word 0x5a827999
-.LK_20_39: .word 0x6ed9eba1
-.LK_40_59: .word 0x8f1bbcdc
-.LK_60_79: .word 0xca62c1d6
-.size sha1_block_data_order,.-sha1_block_data_order
-.asciz "SHA1 block transform for Thumb, CRYPTOGAMS by <appro\@openssl.org>"
-___
-
-print $code;
-close STDOUT; # enforce flush