diff options
Diffstat (limited to 'openssl/crypto/sha/asm/sha1-ppc.pl')
| -rw-r--r-- | openssl/crypto/sha/asm/sha1-ppc.pl | 83 |
1 files changed, 45 insertions, 38 deletions
diff --git a/openssl/crypto/sha/asm/sha1-ppc.pl b/openssl/crypto/sha/asm/sha1-ppc.pl index dcd0fcdfc..2140dd2f8 100644 --- a/openssl/crypto/sha/asm/sha1-ppc.pl +++ b/openssl/crypto/sha/asm/sha1-ppc.pl @@ -24,12 +24,14 @@ $flavour = shift; if ($flavour =~ /64/) { $SIZE_T =8; + $LRSAVE =2*$SIZE_T; $UCMP ="cmpld"; $STU ="stdu"; $POP ="ld"; $PUSH ="std"; } elsif ($flavour =~ /32/) { $SIZE_T =4; + $LRSAVE =$SIZE_T; $UCMP ="cmplw"; $STU ="stwu"; $POP ="lwz"; @@ -43,7 +45,8 @@ die "can't locate ppc-xlate.pl"; open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!"; -$FRAME=24*$SIZE_T; +$FRAME=24*$SIZE_T+64; +$LOCALS=6*$SIZE_T; $K ="r0"; $sp ="r1"; @@ -162,9 +165,8 @@ $code=<<___; .globl .sha1_block_data_order .align 4 .sha1_block_data_order: + $STU $sp,-$FRAME($sp) mflr r0 - $STU $sp,`-($FRAME+64)`($sp) - $PUSH r0,`$FRAME-$SIZE_T*18`($sp) $PUSH r15,`$FRAME-$SIZE_T*17`($sp) $PUSH r16,`$FRAME-$SIZE_T*16`($sp) $PUSH r17,`$FRAME-$SIZE_T*15`($sp) @@ -182,6 +184,7 @@ $code=<<___; $PUSH r29,`$FRAME-$SIZE_T*3`($sp) $PUSH r30,`$FRAME-$SIZE_T*2`($sp) $PUSH r31,`$FRAME-$SIZE_T*1`($sp) + $PUSH r0,`$FRAME+$LRSAVE`($sp) lwz $A,0($ctx) lwz $B,4($ctx) lwz $C,8($ctx) @@ -192,37 +195,14 @@ $code=<<___; Laligned: mtctr $num bl Lsha1_block_private -Ldone: - $POP r0,`$FRAME-$SIZE_T*18`($sp) - $POP r15,`$FRAME-$SIZE_T*17`($sp) - $POP r16,`$FRAME-$SIZE_T*16`($sp) - $POP r17,`$FRAME-$SIZE_T*15`($sp) - $POP r18,`$FRAME-$SIZE_T*14`($sp) - $POP r19,`$FRAME-$SIZE_T*13`($sp) - $POP r20,`$FRAME-$SIZE_T*12`($sp) - $POP r21,`$FRAME-$SIZE_T*11`($sp) - $POP r22,`$FRAME-$SIZE_T*10`($sp) - $POP r23,`$FRAME-$SIZE_T*9`($sp) - $POP r24,`$FRAME-$SIZE_T*8`($sp) - $POP r25,`$FRAME-$SIZE_T*7`($sp) - $POP r26,`$FRAME-$SIZE_T*6`($sp) - $POP r27,`$FRAME-$SIZE_T*5`($sp) - $POP r28,`$FRAME-$SIZE_T*4`($sp) - $POP r29,`$FRAME-$SIZE_T*3`($sp) - $POP r30,`$FRAME-$SIZE_T*2`($sp) - $POP r31,`$FRAME-$SIZE_T*1`($sp) - mtlr r0 - addi $sp,$sp,`$FRAME+64` - blr -___ + b Ldone -# PowerPC specification allows an implementation to be ill-behaved -# upon unaligned access which crosses page boundary. "Better safe -# than sorry" principle makes me treat it specially. But I don't -# look for particular offending word, but rather for 64-byte input -# block which crosses the boundary. Once found that block is aligned -# and hashed separately... -$code.=<<___; +; PowerPC specification allows an implementation to be ill-behaved +; upon unaligned access which crosses page boundary. "Better safe +; than sorry" principle makes me treat it specially. But I don't +; look for particular offending word, but rather for 64-byte input +; block which crosses the boundary. Once found that block is aligned +; and hashed separately... .align 4 Lunaligned: subfic $t1,$inp,4096 @@ -237,7 +217,7 @@ Lunaligned: Lcross_page: li $t1,16 mtctr $t1 - addi r20,$sp,$FRAME ; spot below the frame + addi r20,$sp,$LOCALS ; spot within the frame Lmemcpy: lbz r16,0($inp) lbz r17,1($inp) @@ -251,15 +231,40 @@ Lmemcpy: addi r20,r20,4 bdnz Lmemcpy - $PUSH $inp,`$FRAME-$SIZE_T*19`($sp) + $PUSH $inp,`$FRAME-$SIZE_T*18`($sp) li $t1,1 - addi $inp,$sp,$FRAME + addi $inp,$sp,$LOCALS mtctr $t1 bl Lsha1_block_private - $POP $inp,`$FRAME-$SIZE_T*19`($sp) + $POP $inp,`$FRAME-$SIZE_T*18`($sp) addic. $num,$num,-1 bne- Lunaligned - b Ldone + +Ldone: + $POP r0,`$FRAME+$LRSAVE`($sp) + $POP r15,`$FRAME-$SIZE_T*17`($sp) + $POP r16,`$FRAME-$SIZE_T*16`($sp) + $POP r17,`$FRAME-$SIZE_T*15`($sp) + $POP r18,`$FRAME-$SIZE_T*14`($sp) + $POP r19,`$FRAME-$SIZE_T*13`($sp) + $POP r20,`$FRAME-$SIZE_T*12`($sp) + $POP r21,`$FRAME-$SIZE_T*11`($sp) + $POP r22,`$FRAME-$SIZE_T*10`($sp) + $POP r23,`$FRAME-$SIZE_T*9`($sp) + $POP r24,`$FRAME-$SIZE_T*8`($sp) + $POP r25,`$FRAME-$SIZE_T*7`($sp) + $POP r26,`$FRAME-$SIZE_T*6`($sp) + $POP r27,`$FRAME-$SIZE_T*5`($sp) + $POP r28,`$FRAME-$SIZE_T*4`($sp) + $POP r29,`$FRAME-$SIZE_T*3`($sp) + $POP r30,`$FRAME-$SIZE_T*2`($sp) + $POP r31,`$FRAME-$SIZE_T*1`($sp) + mtlr r0 + addi $sp,$sp,$FRAME + blr + .long 0 + .byte 0,12,4,1,0x80,18,3,0 + .long 0 ___ # This is private block function, which uses tailored calling @@ -309,6 +314,8 @@ $code.=<<___; addi $inp,$inp,`16*4` bdnz- Lsha1_block_private blr + .long 0 + .byte 0,12,0x14,0,0,0,0,0 ___ $code.=<<___; .asciz "SHA1 block transform for PPC, CRYPTOGAMS by <appro\@fy.chalmers.se>" |