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