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SPARC assembly pack: enforce V8+ ABI constraints.

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Even though it's hard to imagine, it turned out that upper half of
arguments passed to V8+ subroutine can be non-zero.

["n" pseudo-instructions, such as srln being srl in 32-bit case and
srlx in 64-bit one, were implemented in binutils 2.10. It's assumed
that Solaris assembler implemented it around same time, i.e. 2000.]

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit f198cc43a0eca4bf1a8e7f60c51af560f4346dc8)
This commit is contained in:
Andy Polyakov 2016-06-30 15:57:57 +02:00
parent cb5ebf9613
commit cbffd2d9ca
3 changed files with 10 additions and 4 deletions
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8
crypto/des/asm/dest4-sparcv9.pl
View File

@ -96,7 +96,7 @@ $code.=<<___;
des_t4_cbc_encrypt:
cmp $len, 0
be,pn $::size_t_cc, .Lcbc_abort
nop
srln $len, 0, $len ! needed on v8+, "nop" on v9
ld [$ivec + 0], %f0 ! load ivec
ld [$ivec + 4], %f1
@ -197,7 +197,7 @@ des_t4_cbc_encrypt:
des_t4_cbc_decrypt:
cmp $len, 0
be,pn $::size_t_cc, .Lcbc_abort
nop
srln $len, 0, $len ! needed on v8+, "nop" on v9
ld [$ivec + 0], %f2 ! load ivec
ld [$ivec + 4], %f3
@ -305,7 +305,7 @@ $code.=<<___;
des_t4_ede3_cbc_encrypt:
cmp $len, 0
be,pn $::size_t_cc, .Lcbc_abort
nop
srln $len, 0, $len ! needed on v8+, "nop" on v9
ld [$ivec + 0], %f0 ! load ivec
ld [$ivec + 4], %f1
@ -457,7 +457,7 @@ des_t4_ede3_cbc_encrypt:
des_t4_ede3_cbc_decrypt:
cmp $len, 0
be,pn $::size_t_cc, .Lcbc_abort
nop
srln $len, 0, $len ! needed on v8+, "nop" on v9
ld [$ivec + 0], %f2 ! load ivec
ld [$ivec + 4], %f3

2
crypto/modes/asm/ghash-sparcv9.pl
View File

@ -445,6 +445,8 @@ gcm_gmult_vis3:
.align 32
gcm_ghash_vis3:
save %sp,-$frame,%sp
nop
srln $len,0,$len ! needed on v8+, "nop" on v9
ldx [$Xip+8],$C2 ! load Xi
ldx [$Xip+0],$C3

4
crypto/perlasm/sparcv9_modes.pl
View File

@ -37,6 +37,7 @@ ${alg}${bits}_t4_cbc_encrypt:
save %sp, -$::frame, %sp
cmp $len, 0
be,pn $::size_t_cc, .L${bits}_cbc_enc_abort
srln $len, 0, $len ! needed on v8+, "nop" on v9
sub $inp, $out, $blk_init ! $inp!=$out
___
$::code.=<<___ if (!$::evp);
@ -254,6 +255,7 @@ ${alg}${bits}_t4_cbc_decrypt:
save %sp, -$::frame, %sp
cmp $len, 0
be,pn $::size_t_cc, .L${bits}_cbc_dec_abort
srln $len, 0, $len ! needed on v8+, "nop" on v9
sub $inp, $out, $blk_init ! $inp!=$out
___
$::code.=<<___ if (!$::evp);
@ -613,6 +615,7 @@ $::code.=<<___;
.align 32
${alg}${bits}_t4_ctr32_encrypt:
save %sp, -$::frame, %sp
srln $len, 0, $len ! needed on v8+, "nop" on v9
prefetch [$inp], 20
prefetch [$inp + 63], 20
@ -916,6 +919,7 @@ $::code.=<<___;
.align 32
${alg}${bits}_t4_xts_${dir}crypt:
save %sp, -$::frame-16, %sp
srln $len, 0, $len ! needed on v8+, "nop" on v9
mov $ivec, %o0
add %fp, $::bias-16, %o1