--- /dev/null
+#! /usr/bin/env perl
+# Copyright 2011-2016 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
+
+
+# ====================================================================
+# Written by Andy Polyakov <appro@openssl.org> 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/.
+# ====================================================================
+
+# September 2011
+#
+# Assembler helpers for Padlock engine. Compared to original engine
+# version relying on inline assembler and compiled with gcc 3.4.6 it
+# was measured to provide ~100% improvement on misaligned data in ECB
+# mode and ~75% in CBC mode. For aligned data improvement can be
+# observed for short inputs only, e.g. 45% for 64-byte messages in
+# ECB mode, 20% in CBC. Difference in performance for aligned vs.
+# misaligned data depends on misalignment and is either ~1.8x or 2.9x.
+# These are approximately same factors as for hardware support, so
+# there is little reason to rely on the latter. On the contrary, it
+# might actually hurt performance in mixture of aligned and misaligned
+# buffers, because a) if you choose to flip 'align' flag in control
+# word on per-buffer basis, then you'd have to reload key context,
+# which incurs penalty; b) if you choose to set 'align' flag
+# permanently, it limits performance even for aligned data to ~1/2.
+# All above mentioned results were collected on 1.5GHz C7. Nano on the
+# other hand handles unaligned data more gracefully. Depending on
+# algorithm and how unaligned data is, hardware can be up to 70% more
+# efficient than below software alignment procedures, nor does 'align'
+# flag have affect on aligned performance [if has any meaning at all].
+# Therefore suggestion is to unconditionally set 'align' flag on Nano
+# for optimal performance.
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+push(@INC,"${dir}","${dir}../../crypto/perlasm");
+require "x86asm.pl";
+
+$output=pop;
+open STDOUT,">$output";
+
+&asm_init($ARGV[0],$0);
+
+%PADLOCK_PREFETCH=(ecb=>128, cbc=>64); # prefetch errata
+$PADLOCK_CHUNK=512; # Must be a power of 2 larger than 16
+
+$ctx="edx";
+$out="edi";
+$inp="esi";
+$len="ecx";
+$chunk="ebx";
+
+&function_begin_B("padlock_capability");
+ &push ("ebx");
+ &pushf ();
+ &pop ("eax");
+ &mov ("ecx","eax");
+ &xor ("eax",1<<21);
+ &push ("eax");
+ &popf ();
+ &pushf ();
+ &pop ("eax");
+ &xor ("ecx","eax");
+ &xor ("eax","eax");
+ &bt ("ecx",21);
+ &jnc (&label("noluck"));
+ &cpuid ();
+ &xor ("eax","eax");
+ &cmp ("ebx","0x".unpack("H*",'tneC'));
+ &jne (&label("noluck"));
+ &cmp ("edx","0x".unpack("H*",'Hrua'));
+ &jne (&label("noluck"));
+ &cmp ("ecx","0x".unpack("H*",'slua'));
+ &jne (&label("noluck"));
+ &mov ("eax",0xC0000000);
+ &cpuid ();
+ &mov ("edx","eax");
+ &xor ("eax","eax");
+ &cmp ("edx",0xC0000001);
+ &jb (&label("noluck"));
+ &mov ("eax",1);
+ &cpuid ();
+ &or ("eax",0x0f);
+ &xor ("ebx","ebx");
+ &and ("eax",0x0fff);
+ &cmp ("eax",0x06ff); # check for Nano
+ &sete ("bl");
+ &mov ("eax",0xC0000001);
+ &push ("ebx");
+ &cpuid ();
+ &pop ("ebx");
+ &mov ("eax","edx");
+ &shl ("ebx",4); # bit#4 denotes Nano
+ &and ("eax",0xffffffef);
+ &or ("eax","ebx")
+&set_label("noluck");
+ &pop ("ebx");
+ &ret ();
+&function_end_B("padlock_capability")
+
+&function_begin_B("padlock_key_bswap");
+ &mov ("edx",&wparam(0));
+ &mov ("ecx",&DWP(240,"edx"));
+&set_label("bswap_loop");
+ &mov ("eax",&DWP(0,"edx"));
+ &bswap ("eax");
+ &mov (&DWP(0,"edx"),"eax");
+ &lea ("edx",&DWP(4,"edx"));
+ &sub ("ecx",1);
+ &jnz (&label("bswap_loop"));
+ &ret ();
+&function_end_B("padlock_key_bswap");
+
+# This is heuristic key context tracing. At first one
+# believes that one should use atomic swap instructions,
+# but it's not actually necessary. Point is that if
+# padlock_saved_context was changed by another thread
+# after we've read it and before we compare it with ctx,
+# our key *shall* be reloaded upon thread context switch
+# and we are therefore set in either case...
+&static_label("padlock_saved_context");
+
+&function_begin_B("padlock_verify_context");
+ &mov ($ctx,&wparam(0));
+ &lea ("eax",($::win32 or $::coff) ? &DWP(&label("padlock_saved_context")) :
+ &DWP(&label("padlock_saved_context")."-".&label("verify_pic_point")));
+ &pushf ();
+ &call ("_padlock_verify_ctx");
+&set_label("verify_pic_point");
+ &lea ("esp",&DWP(4,"esp"));
+ &ret ();
+&function_end_B("padlock_verify_context");
+
+&function_begin_B("_padlock_verify_ctx");
+ &add ("eax",&DWP(0,"esp")) if(!($::win32 or $::coff));# &padlock_saved_context
+ &bt (&DWP(4,"esp"),30); # eflags
+ &jnc (&label("verified"));
+ &cmp ($ctx,&DWP(0,"eax"));
+ &je (&label("verified"));
+ &pushf ();
+ &popf ();
+&set_label("verified");
+ &mov (&DWP(0,"eax"),$ctx);
+ &ret ();
+&function_end_B("_padlock_verify_ctx");
+
+&function_begin_B("padlock_reload_key");
+ &pushf ();
+ &popf ();
+ &ret ();
+&function_end_B("padlock_reload_key");
+
+&function_begin_B("padlock_aes_block");
+ &push ("edi");
+ &push ("esi");
+ &push ("ebx");
+ &mov ($out,&wparam(0)); # must be 16-byte aligned
+ &mov ($inp,&wparam(1)); # must be 16-byte aligned
+ &mov ($ctx,&wparam(2));
+ &mov ($len,1);
+ &lea ("ebx",&DWP(32,$ctx)); # key
+ &lea ($ctx,&DWP(16,$ctx)); # control word
+ &data_byte(0xf3,0x0f,0xa7,0xc8); # rep xcryptecb
+ &pop ("ebx");
+ &pop ("esi");
+ &pop ("edi");
+ &ret ();
+&function_end_B("padlock_aes_block");
+
+sub generate_mode {
+my ($mode,$opcode) = @_;
+# int padlock_$mode_encrypt(void *out, const void *inp,
+# struct padlock_cipher_data *ctx, size_t len);
+&function_begin("padlock_${mode}_encrypt");
+ &mov ($out,&wparam(0));
+ &mov ($inp,&wparam(1));
+ &mov ($ctx,&wparam(2));
+ &mov ($len,&wparam(3));
+ &test ($ctx,15);
+ &jnz (&label("${mode}_abort"));
+ &test ($len,15);
+ &jnz (&label("${mode}_abort"));
+ &lea ("eax",($::win32 or $::coff) ? &DWP(&label("padlock_saved_context")) :
+ &DWP(&label("padlock_saved_context")."-".&label("${mode}_pic_point")));
+ &pushf ();
+ &cld ();
+ &call ("_padlock_verify_ctx");
+&set_label("${mode}_pic_point");
+ &lea ($ctx,&DWP(16,$ctx)); # control word
+ &xor ("eax","eax");
+ if ($mode eq "ctr32") {
+ &movq ("mm0",&QWP(-16,$ctx)); # load [upper part of] counter
+ } else {
+ &xor ("ebx","ebx");
+ &test (&DWP(0,$ctx),1<<5); # align bit in control word
+ &jnz (&label("${mode}_aligned"));
+ &test ($out,0x0f);
+ &setz ("al"); # !out_misaligned
+ &test ($inp,0x0f);
+ &setz ("bl"); # !inp_misaligned
+ &test ("eax","ebx");
+ &jnz (&label("${mode}_aligned"));
+ &neg ("eax");
+ }
+ &mov ($chunk,$PADLOCK_CHUNK);
+ ¬ ("eax"); # out_misaligned?-1:0
+ &lea ("ebp",&DWP(-24,"esp"));
+ &cmp ($len,$chunk);
+ &cmovc ($chunk,$len); # chunk=len>PADLOCK_CHUNK?PADLOCK_CHUNK:len
+ &and ("eax",$chunk); # out_misaligned?chunk:0
+ &mov ($chunk,$len);
+ &neg ("eax");
+ &and ($chunk,$PADLOCK_CHUNK-1); # chunk=len%PADLOCK_CHUNK
+ &lea ("esp",&DWP(0,"eax","ebp")); # alloca
+ &mov ("eax",$PADLOCK_CHUNK);
+ &cmovz ($chunk,"eax"); # chunk=chunk?:PADLOCK_CHUNK
+ &mov ("eax","ebp");
+ &and ("ebp",-16);
+ &and ("esp",-16);
+ &mov (&DWP(16,"ebp"),"eax");
+ if ($PADLOCK_PREFETCH{$mode}) {
+ &cmp ($len,$chunk);
+ &ja (&label("${mode}_loop"));
+ &mov ("eax",$inp); # check if prefetch crosses page
+ &cmp ("ebp","esp");
+ &cmove ("eax",$out);
+ &add ("eax",$len);
+ &neg ("eax");
+ &and ("eax",0xfff); # distance to page boundary
+ &cmp ("eax",$PADLOCK_PREFETCH{$mode});
+ &mov ("eax",-$PADLOCK_PREFETCH{$mode});
+ &cmovae ("eax",$chunk); # mask=distance<prefetch?-prefetch:-1
+ &and ($chunk,"eax");
+ &jz (&label("${mode}_unaligned_tail"));
+ }
+ &jmp (&label("${mode}_loop"));
+
+&set_label("${mode}_loop",16);
+ &mov (&DWP(0,"ebp"),$out); # save parameters
+ &mov (&DWP(4,"ebp"),$inp);
+ &mov (&DWP(8,"ebp"),$len);
+ &mov ($len,$chunk);
+ &mov (&DWP(12,"ebp"),$chunk); # chunk
+ if ($mode eq "ctr32") {
+ &mov ("ecx",&DWP(-4,$ctx));
+ &xor ($out,$out);
+ &mov ("eax",&DWP(-8,$ctx)); # borrow $len
+&set_label("${mode}_prepare");
+ &mov (&DWP(12,"esp",$out),"ecx");
+ &bswap ("ecx");
+ &movq (&QWP(0,"esp",$out),"mm0");
+ &inc ("ecx");
+ &mov (&DWP(8,"esp",$out),"eax");
+ &bswap ("ecx");
+ &lea ($out,&DWP(16,$out));
+ &cmp ($out,$chunk);
+ &jb (&label("${mode}_prepare"));
+
+ &mov (&DWP(-4,$ctx),"ecx");
+ &lea ($inp,&DWP(0,"esp"));
+ &lea ($out,&DWP(0,"esp"));
+ &mov ($len,$chunk);
+ } else {
+ &test ($out,0x0f); # out_misaligned
+ &cmovnz ($out,"esp");
+ &test ($inp,0x0f); # inp_misaligned
+ &jz (&label("${mode}_inp_aligned"));
+ &shr ($len,2);
+ &data_byte(0xf3,0xa5); # rep movsl
+ &sub ($out,$chunk);
+ &mov ($len,$chunk);
+ &mov ($inp,$out);
+&set_label("${mode}_inp_aligned");
+ }
+ &lea ("eax",&DWP(-16,$ctx)); # ivp
+ &lea ("ebx",&DWP(16,$ctx)); # key
+ &shr ($len,4); # len/=AES_BLOCK_SIZE
+ &data_byte(0xf3,0x0f,0xa7,$opcode); # rep xcrypt*
+ if ($mode !~ /ecb|ctr/) {
+ &movaps ("xmm0",&QWP(0,"eax"));
+ &movaps (&QWP(-16,$ctx),"xmm0"); # copy [or refresh] iv
+ }
+ &mov ($out,&DWP(0,"ebp")); # restore parameters
+ &mov ($chunk,&DWP(12,"ebp"));
+ if ($mode eq "ctr32") {
+ &mov ($inp,&DWP(4,"ebp"));
+ &xor ($len,$len);
+&set_label("${mode}_xor");
+ &movups ("xmm1",&QWP(0,$inp,$len));
+ &lea ($len,&DWP(16,$len));
+ &pxor ("xmm1",&QWP(-16,"esp",$len));
+ &movups (&QWP(-16,$out,$len),"xmm1");
+ &cmp ($len,$chunk);
+ &jb (&label("${mode}_xor"));
+ } else {
+ &test ($out,0x0f);
+ &jz (&label("${mode}_out_aligned"));
+ &mov ($len,$chunk);
+ &lea ($inp,&DWP(0,"esp"));
+ &shr ($len,2);
+ &data_byte(0xf3,0xa5); # rep movsl
+ &sub ($out,$chunk);
+&set_label("${mode}_out_aligned");
+ &mov ($inp,&DWP(4,"ebp"));
+ }
+ &mov ($len,&DWP(8,"ebp"));
+ &add ($out,$chunk);
+ &add ($inp,$chunk);
+ &sub ($len,$chunk);
+ &mov ($chunk,$PADLOCK_CHUNK);
+ if (!$PADLOCK_PREFETCH{$mode}) {
+ &jnz (&label("${mode}_loop"));
+ } else {
+ &jz (&label("${mode}_break"));
+ &cmp ($len,$chunk);
+ &jae (&label("${mode}_loop"));
+
+&set_label("${mode}_unaligned_tail");
+ &xor ("eax","eax");
+ &cmp ("esp","ebp");
+ &cmove ("eax",$len);
+ &sub ("esp","eax"); # alloca
+ &mov ("eax", $out); # save parameters
+ &mov ($chunk,$len);
+ &shr ($len,2);
+ &lea ($out,&DWP(0,"esp"));
+ &data_byte(0xf3,0xa5); # rep movsl
+ &mov ($inp,"esp");
+ &mov ($out,"eax"); # restore parameters
+ &mov ($len,$chunk);
+ &jmp (&label("${mode}_loop"));
+
+&set_label("${mode}_break",16);
+ }
+ if ($mode ne "ctr32") {
+ &cmp ("esp","ebp");
+ &je (&label("${mode}_done"));
+ }
+ &pxor ("xmm0","xmm0");
+ &lea ("eax",&DWP(0,"esp"));
+&set_label("${mode}_bzero");
+ &movaps (&QWP(0,"eax"),"xmm0");
+ &lea ("eax",&DWP(16,"eax"));
+ &cmp ("ebp","eax");
+ &ja (&label("${mode}_bzero"));
+
+&set_label("${mode}_done");
+ &mov ("ebp",&DWP(16,"ebp"));
+ &lea ("esp",&DWP(24,"ebp"));
+ if ($mode ne "ctr32") {
+ &jmp (&label("${mode}_exit"));
+
+&set_label("${mode}_aligned",16);
+ if ($PADLOCK_PREFETCH{$mode}) {
+ &lea ("ebp",&DWP(0,$inp,$len));
+ &neg ("ebp");
+ &and ("ebp",0xfff); # distance to page boundary
+ &xor ("eax","eax");
+ &cmp ("ebp",$PADLOCK_PREFETCH{$mode});
+ &mov ("ebp",$PADLOCK_PREFETCH{$mode}-1);
+ &cmovae ("ebp","eax");
+ &and ("ebp",$len); # remainder
+ &sub ($len,"ebp");
+ &jz (&label("${mode}_aligned_tail"));
+ }
+ &lea ("eax",&DWP(-16,$ctx)); # ivp
+ &lea ("ebx",&DWP(16,$ctx)); # key
+ &shr ($len,4); # len/=AES_BLOCK_SIZE
+ &data_byte(0xf3,0x0f,0xa7,$opcode); # rep xcrypt*
+ if ($mode ne "ecb") {
+ &movaps ("xmm0",&QWP(0,"eax"));
+ &movaps (&QWP(-16,$ctx),"xmm0"); # copy [or refresh] iv
+ }
+ if ($PADLOCK_PREFETCH{$mode}) {
+ &test ("ebp","ebp");
+ &jz (&label("${mode}_exit"));
+
+&set_label("${mode}_aligned_tail");
+ &mov ($len,"ebp");
+ &lea ("ebp",&DWP(-24,"esp"));
+ &mov ("esp","ebp");
+ &mov ("eax","ebp");
+ &sub ("esp",$len);
+ &and ("ebp",-16);
+ &and ("esp",-16);
+ &mov (&DWP(16,"ebp"),"eax");
+ &mov ("eax", $out); # save parameters
+ &mov ($chunk,$len);
+ &shr ($len,2);
+ &lea ($out,&DWP(0,"esp"));
+ &data_byte(0xf3,0xa5); # rep movsl
+ &mov ($inp,"esp");
+ &mov ($out,"eax"); # restore parameters
+ &mov ($len,$chunk);
+ &jmp (&label("${mode}_loop"));
+ }
+&set_label("${mode}_exit"); }
+ &mov ("eax",1);
+ &lea ("esp",&DWP(4,"esp")); # popf
+ &emms () if ($mode eq "ctr32");
+&set_label("${mode}_abort");
+&function_end("padlock_${mode}_encrypt");
+}
+
+&generate_mode("ecb",0xc8);
+&generate_mode("cbc",0xd0);
+&generate_mode("cfb",0xe0);
+&generate_mode("ofb",0xe8);
+&generate_mode("ctr32",0xc8); # yes, it implements own CTR with ECB opcode,
+ # because hardware CTR was introduced later
+ # and even has errata on certain C7 stepping.
+ # own implementation *always* works, though
+ # ~15% slower than dedicated hardware...
+
+&function_begin_B("padlock_xstore");
+ &push ("edi");
+ &mov ("edi",&wparam(0));
+ &mov ("edx",&wparam(1));
+ &data_byte(0x0f,0xa7,0xc0); # xstore
+ &pop ("edi");
+ &ret ();
+&function_end_B("padlock_xstore");
+
+&function_begin_B("_win32_segv_handler");
+ &mov ("eax",1); # ExceptionContinueSearch
+ &mov ("edx",&wparam(0)); # *ExceptionRecord
+ &mov ("ecx",&wparam(2)); # *ContextRecord
+ &cmp (&DWP(0,"edx"),0xC0000005) # ExceptionRecord->ExceptionCode == STATUS_ACCESS_VIOLATION
+ &jne (&label("ret"));
+ &add (&DWP(184,"ecx"),4); # skip over rep sha*
+ &mov ("eax",0); # ExceptionContinueExecution
+&set_label("ret");
+ &ret ();
+&function_end_B("_win32_segv_handler");
+&safeseh("_win32_segv_handler") if ($::win32);
+
+&function_begin_B("padlock_sha1_oneshot");
+ &push ("edi");
+ &push ("esi");
+ &xor ("eax","eax");
+ &mov ("edi",&wparam(0));
+ &mov ("esi",&wparam(1));
+ &mov ("ecx",&wparam(2));
+ if ($::win32 or $::coff) {
+ &push (&::islabel("_win32_segv_handler"));
+ &data_byte(0x64,0xff,0x30); # push %fs:(%eax)
+ &data_byte(0x64,0x89,0x20); # mov %esp,%fs:(%eax)
+ }
+ &mov ("edx","esp"); # put aside %esp
+ &add ("esp",-128); # 32 is enough but spec says 128
+ &movups ("xmm0",&QWP(0,"edi")); # copy-in context
+ &and ("esp",-16);
+ &mov ("eax",&DWP(16,"edi"));
+ &movaps (&QWP(0,"esp"),"xmm0");
+ &mov ("edi","esp");
+ &mov (&DWP(16,"esp"),"eax");
+ &xor ("eax","eax");
+ &data_byte(0xf3,0x0f,0xa6,0xc8); # rep xsha1
+ &movaps ("xmm0",&QWP(0,"esp"));
+ &mov ("eax",&DWP(16,"esp"));
+ &mov ("esp","edx"); # restore %esp
+ if ($::win32 or $::coff) {
+ &data_byte(0x64,0x8f,0x05,0,0,0,0); # pop %fs:0
+ &lea ("esp",&DWP(4,"esp"));
+ }
+ &mov ("edi",&wparam(0));
+ &movups (&QWP(0,"edi"),"xmm0"); # copy-out context
+ &mov (&DWP(16,"edi"),"eax");
+ &pop ("esi");
+ &pop ("edi");
+ &ret ();
+&function_end_B("padlock_sha1_oneshot");
+
+&function_begin_B("padlock_sha1_blocks");
+ &push ("edi");
+ &push ("esi");
+ &mov ("edi",&wparam(0));
+ &mov ("esi",&wparam(1));
+ &mov ("edx","esp"); # put aside %esp
+ &mov ("ecx",&wparam(2));
+ &add ("esp",-128);
+ &movups ("xmm0",&QWP(0,"edi")); # copy-in context
+ &and ("esp",-16);
+ &mov ("eax",&DWP(16,"edi"));
+ &movaps (&QWP(0,"esp"),"xmm0");
+ &mov ("edi","esp");
+ &mov (&DWP(16,"esp"),"eax");
+ &mov ("eax",-1);
+ &data_byte(0xf3,0x0f,0xa6,0xc8); # rep xsha1
+ &movaps ("xmm0",&QWP(0,"esp"));
+ &mov ("eax",&DWP(16,"esp"));
+ &mov ("esp","edx"); # restore %esp
+ &mov ("edi",&wparam(0));
+ &movups (&QWP(0,"edi"),"xmm0"); # copy-out context
+ &mov (&DWP(16,"edi"),"eax");
+ &pop ("esi");
+ &pop ("edi");
+ &ret ();
+&function_end_B("padlock_sha1_blocks");
+
+&function_begin_B("padlock_sha256_oneshot");
+ &push ("edi");
+ &push ("esi");
+ &xor ("eax","eax");
+ &mov ("edi",&wparam(0));
+ &mov ("esi",&wparam(1));
+ &mov ("ecx",&wparam(2));
+ if ($::win32 or $::coff) {
+ &push (&::islabel("_win32_segv_handler"));
+ &data_byte(0x64,0xff,0x30); # push %fs:(%eax)
+ &data_byte(0x64,0x89,0x20); # mov %esp,%fs:(%eax)
+ }
+ &mov ("edx","esp"); # put aside %esp
+ &add ("esp",-128);
+ &movups ("xmm0",&QWP(0,"edi")); # copy-in context
+ &and ("esp",-16);
+ &movups ("xmm1",&QWP(16,"edi"));
+ &movaps (&QWP(0,"esp"),"xmm0");
+ &mov ("edi","esp");
+ &movaps (&QWP(16,"esp"),"xmm1");
+ &xor ("eax","eax");
+ &data_byte(0xf3,0x0f,0xa6,0xd0); # rep xsha256
+ &movaps ("xmm0",&QWP(0,"esp"));
+ &movaps ("xmm1",&QWP(16,"esp"));
+ &mov ("esp","edx"); # restore %esp
+ if ($::win32 or $::coff) {
+ &data_byte(0x64,0x8f,0x05,0,0,0,0); # pop %fs:0
+ &lea ("esp",&DWP(4,"esp"));
+ }
+ &mov ("edi",&wparam(0));
+ &movups (&QWP(0,"edi"),"xmm0"); # copy-out context
+ &movups (&QWP(16,"edi"),"xmm1");
+ &pop ("esi");
+ &pop ("edi");
+ &ret ();
+&function_end_B("padlock_sha256_oneshot");
+
+&function_begin_B("padlock_sha256_blocks");
+ &push ("edi");
+ &push ("esi");
+ &mov ("edi",&wparam(0));
+ &mov ("esi",&wparam(1));
+ &mov ("ecx",&wparam(2));
+ &mov ("edx","esp"); # put aside %esp
+ &add ("esp",-128);
+ &movups ("xmm0",&QWP(0,"edi")); # copy-in context
+ &and ("esp",-16);
+ &movups ("xmm1",&QWP(16,"edi"));
+ &movaps (&QWP(0,"esp"),"xmm0");
+ &mov ("edi","esp");
+ &movaps (&QWP(16,"esp"),"xmm1");
+ &mov ("eax",-1);
+ &data_byte(0xf3,0x0f,0xa6,0xd0); # rep xsha256
+ &movaps ("xmm0",&QWP(0,"esp"));
+ &movaps ("xmm1",&QWP(16,"esp"));
+ &mov ("esp","edx"); # restore %esp
+ &mov ("edi",&wparam(0));
+ &movups (&QWP(0,"edi"),"xmm0"); # copy-out context
+ &movups (&QWP(16,"edi"),"xmm1");
+ &pop ("esi");
+ &pop ("edi");
+ &ret ();
+&function_end_B("padlock_sha256_blocks");
+
+&function_begin_B("padlock_sha512_blocks");
+ &push ("edi");
+ &push ("esi");
+ &mov ("edi",&wparam(0));
+ &mov ("esi",&wparam(1));
+ &mov ("ecx",&wparam(2));
+ &mov ("edx","esp"); # put aside %esp
+ &add ("esp",-128);
+ &movups ("xmm0",&QWP(0,"edi")); # copy-in context
+ &and ("esp",-16);
+ &movups ("xmm1",&QWP(16,"edi"));
+ &movups ("xmm2",&QWP(32,"edi"));
+ &movups ("xmm3",&QWP(48,"edi"));
+ &movaps (&QWP(0,"esp"),"xmm0");
+ &mov ("edi","esp");
+ &movaps (&QWP(16,"esp"),"xmm1");
+ &movaps (&QWP(32,"esp"),"xmm2");
+ &movaps (&QWP(48,"esp"),"xmm3");
+ &data_byte(0xf3,0x0f,0xa6,0xe0); # rep xsha512
+ &movaps ("xmm0",&QWP(0,"esp"));
+ &movaps ("xmm1",&QWP(16,"esp"));
+ &movaps ("xmm2",&QWP(32,"esp"));
+ &movaps ("xmm3",&QWP(48,"esp"));
+ &mov ("esp","edx"); # restore %esp
+ &mov ("edi",&wparam(0));
+ &movups (&QWP(0,"edi"),"xmm0"); # copy-out context
+ &movups (&QWP(16,"edi"),"xmm1");
+ &movups (&QWP(32,"edi"),"xmm2");
+ &movups (&QWP(48,"edi"),"xmm3");
+ &pop ("esi");
+ &pop ("edi");
+ &ret ();
+&function_end_B("padlock_sha512_blocks");
+
+&asciz ("VIA Padlock x86 module, CRYPTOGAMS by <appro\@openssl.org>");
+&align (16);
+
+&dataseg();
+# Essentially this variable belongs in thread local storage.
+# Having this variable global on the other hand can only cause
+# few bogus key reloads [if any at all on signle-CPU system],
+# so we accept the penalty...
+&set_label("padlock_saved_context",4);
+&data_word(0);
+
+&asm_finish();
+
+close STDOUT;
projects / cassiopeia.git / blobdiff