SPARC assembly pack: enforce V8+ ABI constraints.

[openssl.git] / crypto / perlasm / sparcv9_modes.pl

diff --git a/crypto/perlasm/sparcv9_modes.pl b/crypto/perlasm/sparcv9_modes.pl
index f5474a2d742a8ac06a9e8c2014b7c5f91596cb15..bfdada8540be67e99d438c6adac716734163e588 100644 (file)
--- a/crypto/perlasm/sparcv9_modes.pl
+++ b/crypto/perlasm/sparcv9_modes.pl
@@ -1,4 +1,11 @@
-#!/usr/bin/env perl
+#! /usr/bin/env perl
+# Copyright 2012-2016 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
 
 # Specific modes implementations for SPARC Architecture 2011. There
 # is T4 dependency though, an ASI value that is not specified in the
@@ -16,6 +23,10 @@
 # block sizes [though few percent better for not so long ones]. All
 # this based on suggestions from David Miller.
 
+$::bias="STACK_BIAS";
+$::frame="STACK_FRAME";
+$::size_t_cc="SIZE_T_CC";
+
 sub asm_init {         # to be called with @ARGV as argument
     for (@_)           { $::abibits=64 if (/\-m64/ || /\-xarch\=v9/); }
     if ($::abibits==64)        { $::bias=2047; $::frame=192; $::size_t_cc="%xcc"; }
@@ -37,6 +48,7 @@ ${alg}${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 +266,7 @@ ${alg}${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 +626,7 @@ $::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 +930,7 @@ $::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
@@ -1249,6 +1264,7 @@ $code.=<<___;
        fxor            %f8,  %f4, %f4
        fxor            %f10, %f6, %f6
 
+       subcc           $len, 2, $len
        stda            %f0, [$out]0xe2         ! ASI_BLK_INIT, T4-specific
        add             $out, 8, $out
        stda            %f2, [$out]0xe2         ! ASI_BLK_INIT, T4-specific