From f198cc43a0eca4bf1a8e7f60c51af560f4346dc8 Mon Sep 17 00:00:00 2001 From: Andy Polyakov Date: Thu, 30 Jun 2016 15:57:57 +0200 Subject: SPARC assembly pack: enforce V8+ ABI constraints. 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 --- crypto/perlasm/sparcv9_modes.pl | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'crypto/perlasm/sparcv9_modes.pl') diff --git a/crypto/perlasm/sparcv9_modes.pl b/crypto/perlasm/sparcv9_modes.pl index 47c2e53b99..bfdada8540 100644 --- a/crypto/perlasm/sparcv9_modes.pl +++ b/crypto/perlasm/sparcv9_modes.pl @@ -48,6 +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); @@ -265,6 +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); @@ -624,6 +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 @@ -927,6 +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 -- cgit v1.2.3