diff options
author | Andy Polyakov <appro@openssl.org> | 2011-09-06 20:45:36 +0000 |
---|---|---|
committer | Andy Polyakov <appro@openssl.org> | 2011-09-06 20:45:36 +0000 |
commit | ed28aef8b455be436f252dfceac49a958a92e53b (patch) | |
tree | cd34319f2128612e24d78d06571cdc4c24eab614 /engines/asm | |
parent | 0486cce653b62d26a8ca37ac12f69f1a6b998844 (diff) |
Padlock engine: make it independent of inline assembler.
Diffstat (limited to 'engines/asm')
-rw-r--r-- | engines/asm/e_padlock-x86.pl | 424 | ||||
-rw-r--r-- | engines/asm/e_padlock-x86_86.pl | 327 |
2 files changed, 751 insertions, 0 deletions
diff --git a/engines/asm/e_padlock-x86.pl b/engines/asm/e_padlock-x86.pl new file mode 100644 index 0000000000..4a00d9d687 --- /dev/null +++ b/engines/asm/e_padlock-x86.pl @@ -0,0 +1,424 @@ +#!/usr/bin/env perl + +# ==================================================================== +# 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. It might actually +# hurt performance in mixture of aligned and misaligned buffers, +# because a) if you choose to flip 'align' flag on per-buffer basis, +# then you'd have to reload key context; b) if you choose to set +# 'align' flag permanently, it limits performance for aligned data +# to ~1/2. All results were collected on 1.5GHz C7. + +$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; +push(@INC,"${dir}","${dir}../../crypto/perlasm"); +require "x86asm.pl"; + +&asm_init($ARGV[0],$0); + +$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",&DWP("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")); # &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("${mode}_abort")); + &lea ("eax",&DWP("padlock_saved_context-".&label("${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 "ctr16") { + &movdqa ("xmm0",&QWP(-16,$ctx));# load iv + } else { + &xor ("ebx","ebx"); + &test (&DWP(0,$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,$PADLOCK_CHUNK-1); # chunk=len%PADLOCK_CHUNK + &lea ("esp",&DWP(0,"eax","ebp")); # alloca + &and ("esp",-16); + &jmp (&label("${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 "ctr16") { + &pextrw ("ecx","xmm0",7); # borrow $len + &mov ($inp,1); + &xor ($out,$out); + &xchg ("ch","cl"); +&set_label("${mode}_prepare"); + &movdqa (&QWP(0,"esp",$out),"xmm0"); + &lea ("eax",&DWP(0,"ecx",$inp)); + &xchg ("ah","al"); + &lea ($out,&DWP(16,$out)); + &pinsrw ("xmm0","eax",7); + &lea ($inp,&DWP(1,$inp)); + &cmp ($out,$chunk); + &jb (&label("${mode}_prepare")); + + &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 ($mode !~ /ecb|ctr/) { + &movdqa ("xmm0",&QWP(0,"eax")); + &movdqa (&DWP(-16,$ctx),"xmm0"); # copy [or refresh] iv + } + &mov ($out,&DWP(0,"ebp")); # restore parameters + &mov ($chunk,&DWP(12,"ebp")); + if ($mode eq "ctr16") { + &mov ($inp,&DWP(4,"ebp")); + &xor ($len,$len); +&set_label("${mode}_xor"); + &movdqu ("xmm1",&QWP(0,$inp,$len)); + &lea ($len,&DWP(16,$len)); + &pxor ("xmm1",&QWP(-16,"esp",$len)); + &movdqu (&QWP(-16,$out,$len),"xmm1"); + &cmp ($len,$chunk); + &jb (&label("${mode}_xor")); + } else { + &test ($out,0x0f); + &jz (&label("${mode}_out_aligned")); + &mov ($len,$chunk); + &shr ($len,2); + &lea ($inp,&DWP(0,"esp")); + &data_byte(0xf3,0xa5); # rep movsl + &sub ($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); + &jnz (&label("${mode}_loop")); + if ($mode eq "ctr16") { + &movdqa (&QWP(-16,$ctx),"xmm0"); # write out iv + &pxor ("xmm0","xmm0"); + &pxor ("xmm1","xmm1"); + } else { + &test ($out,0x0f); # out_misaligned + &jz (&label("${mode}_done")); + } + &mov ($len,"ebp"); + &mov ($out,"esp"); + &sub ($len,"esp"); + &xor ("eax","eax"); + &shr ($len,2); + &data_byte(0xf3,0xab); # rep stosl +&set_label("${mode}_done"); + &lea ("esp",&DWP(24,"ebp")); + if ($mode ne "ctr16") { + &jmp (&label("${mode}_exit")); + +&set_label("${mode}_aligned",16); + &lea ("eax",&DWP(-16,$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") { + &movdqa ("xmm0",&QWP(0,"eax")); + &movdqa (&DWP(-16,$ctx),"xmm0"); # copy [or refresh] iv + } +&set_label("${mode}_exit"); } + &mov ("eax",1); + &lea ("esp",&DWP(4,"esp")); # popf +&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("ctr16",0xc8); # yes, it implements own ctr with ecb opcode, + # because hardware ctr was introduced later + # and even has errata on certain CPU stepping. + # own implementation *always* works... + +&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 ($::win32); + +&function_begin_B("padlock_sha1_oneshot"); + &push ("edi"); + &push ("esi"); + &xor ("eax","eax"); + if ($::win32 or $::coff) { + &push (&::islabel("_win32_segv_handler")); + &data_byte(0x64,0xff,0x30); # push %fs:(%eax) + &data_byte(0x64,0x89,0x20); # mov %esp,%fs:(%eax) + } + &mov ("edi",&wparam(0)); + &mov ("esi",&wparam(1)); + &mov ("ecx",&wparam(2)); + &data_byte(0xf3,0x0f,0xa6,0xc8); # rep xsha1 + if ($::win32 or $::coff) { + &data_byte(0x64,0x8f,0x05,0,0,0,0); # pop %fs:0 + &lea ("esp",&DWP(4,"esp")); + } + &pop ("esi"); + &pop ("edi"); + &ret (); +&function_end_B("padlock_sha1_oneshot"); + +&function_begin_B("padlock_sha1"); + &push ("edi"); + &push ("esi"); + &mov ("eax",-1); + &mov ("edi",&wparam(0)); + &mov ("esi",&wparam(1)); + &mov ("ecx",&wparam(2)); + &data_byte(0xf3,0x0f,0xa6,0xc8); # rep xsha1 + &pop ("esi"); + &pop ("edi"); + &ret (); +&function_end_B("padlock_sha1"); + +&function_begin_B("padlock_sha256_oneshot"); + &push ("edi"); + &push ("esi"); + &xor ("eax","eax"); + if ($::win32 or $::coff) { + &push (&::islabel("_win32_segv_handler")); + &data_byte(0x64,0xff,0x30); # push %fs:(%eax) + &data_byte(0x64,0x89,0x20); # mov %esp,%fs:(%eax) + } + &mov ("edi",&wparam(0)); + &mov ("esi",&wparam(1)); + &mov ("ecx",&wparam(2)); + &data_byte(0xf3,0x0f,0xa6,0xd0); # rep xsha256 + if ($::win32 or $::coff) { + &data_byte(0x64,0x8f,0x05,0,0,0,0); # pop %fs:0 + &lea ("esp",&DWP(4,"esp")); + } + &pop ("esi"); + &pop ("edi"); + &ret (); +&function_end_B("padlock_sha256_oneshot"); + +&function_begin_B("padlock_sha256"); + &push ("edi"); + &push ("esi"); + &mov ("eax",-1); + &mov ("edi",&wparam(0)); + &mov ("esi",&wparam(1)); + &mov ("ecx",&wparam(2)); + &data_byte(0xf3,0x0f,0xa6,0xd0); # rep xsha256 + &pop ("esi"); + &pop ("edi"); + &ret (); +&function_end_B("padlock_sha256"); + +&asciz ("VIA Padlock x86 module, CRYPTOGAMS by <appro\@openssl.org>"); +&align (16); + +&dataseg(); +# Essentially this variable belongs in thread local storage. +# Having this variable global on the other hand can only cause +# few bogus key reloads [if any at all on signle-CPU system], +# so we accept the panalty... +&set_label("padlock_saved_context",4); +&data_word(0); + +&asm_finish(); diff --git a/engines/asm/e_padlock-x86_86.pl b/engines/asm/e_padlock-x86_86.pl new file mode 100644 index 0000000000..56cabc0f15 --- /dev/null +++ b/engines/asm/e_padlock-x86_86.pl @@ -0,0 +1,327 @@ +#!/usr/bin/env perl + +# ==================================================================== +# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL +# project. The module is, however, dual licensed under OpenSSL and +# CRYPTOGAMS licenses depending on where you obtain it. For further +# details see http://www.openssl.org/~appro/cryptogams/. +# ==================================================================== + +# September 2011 +# +# Assembler helpers for Padlock engine. + +$flavour = shift; +$output = shift; +if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } + +$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); + +$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; +( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or +( $xlate="${dir}../../crypto/perlasm/x86_64-xlate.pl" and -f $xlate) or +die "can't locate x86_64-xlate.pl"; + +open STDOUT,"| $^X $xlate $flavour $output"; + +$code=".text\n"; + +$PADLOCK_CHUNK=512; # Must be a power of 2 larger than 16 + +$ctx="%rdx"; +$out="%rdi"; +$inp="%rsi"; +$len="%rcx"; +$chunk="%rbx"; + +($arg1,$arg2,$arg3,$arg4)=$win64?("%rcx","%rdx","%r8", "%r9") : # Win64 order + ("%rdi","%rsi","%rdx","%rcx"); # Unix order + +$code.=<<___; +.globl padlock_capability +.type padlock_capability,\@abi-omnipotent +.align 16 +padlock_capability: + mov %rbx,%r8 + xor %eax,%eax + cpuid + xor %eax,%eax + cmp \$`"0x".unpack("H*",'tneC')`,%ebx + jne .Lnoluck + cmp \$`"0x".unpack("H*",'Hrua')`,%edx + jne .Lnoluck + cmp \$`"0x".unpack("H*",'slua')`,%ecx + jne .Lnoluck + mov \$0xC0000000,%eax + cpuid + mov %eax,%edx + xor %eax,%eax + cmp \$0xC0000001,%edx + jb .Lnoluck + mov \$0xC0000001,%eax + cpuid + mov %edx,%eax + and \$0xffffffef,%eax + or \$0x10,%eax # set Nano bit#4 +.Lnoluck: + mov %r8,%rbx + ret +.size padlock_capability,.-padlock_capability + +.globl padlock_key_bswap +.type padlock_key_bswap,\@abi-omnipotent,0 +.align 16 +padlock_key_bswap: + mov 240($arg1),%edx +.Lbswap_loop: + mov ($arg1),%eax + bswap %eax + mov %eax,($arg1) + lea 4($arg1),$arg1 + sub \$1,%edx + jnz .Lbswap_loop + ret +.size padlock_key_bswap,.-padlock_key_bswap + +.globl padlock_verify_context +.type padlock_verify_context,\@abi-omnipotent +.align 16 +padlock_verify_context: + mov $arg1,$ctx + pushf + lea .Lpadlock_saved_context(%rip),%rax + call _padlock_verify_ctx + lea 8(%rsp),%rsp + ret +.size padlock_verify_context,.-padlock_verify_context + +.type _padlock_verify_ctx,\@abi-omnipotent +.align 16 +_padlock_verify_ctx: + mov 8(%rsp),%r8 + bt \$30,%r8 + jnc .Lverified + cmp (%rax),$ctx + je .Lverified + pushf + popf +.Lverified: + mov $ctx,(%rax) + ret +.size _padlock_verify_ctx,.-_padlock_verify_ctx + +.globl padlock_reload_key +.type padlock_reload_key,\@abi-omnipotent +.align 16 +padlock_reload_key: + pushf + popf + ret +.size padlock_reload_key,.-padlock_reload_key + +.globl padlock_aes_block +.type padlock_aes_block,\@function,3 +.align 16 +padlock_aes_block: + mov %rbx,%r8 + mov \$1,$len + lea 32($ctx),%rbx # key + lea 16($ctx),$ctx # control word + .byte 0xf3,0x0f,0xa7,0xc8 # rep xcryptecb + mov %r8,%rbx + ret +.size padlock_aes_block,.-padlock_aes_block + +.globl padlock_xstore +.type padlock_xstore,\@function,2 +.align 16 +padlock_xstore: + mov %esi,%edx + .byte 0x0f,0xa7,0xc0 # xstore + ret +.size padlock_xstore,.-padlock_xstore + +.globl padlock_sha1_oneshot +.type padlock_sha1_oneshot,\@function,3 +.align 16 +padlock_sha1_oneshot: + xor %rax,%rax + mov %rdx,%rcx + .byte 0xf3,0x0f,0xa6,0xc8 # rep xsha1 + ret +.size padlock_sha1_oneshot,.-padlock_sha1_oneshot + +.globl padlock_sha1 +.type padlock_sha1,\@function,3 +.align 16 +padlock_sha1: + mov \$-1,%rax + mov %rdx,%rcx + .byte 0xf3,0x0f,0xa6,0xc8 # rep xsha1 + ret +.size padlock_sha1,.-padlock_sha1 + +.globl padlock_sha256_oneshot +.type padlock_sha256_oneshot,\@function,3 +.align 16 +padlock_sha256_oneshot: + xor %rax,%rax + mov %rdx,%rcx + .byte 0xf3,0x0f,0xa6,0xd0 # rep xsha256 + ret +.size padlock_sha256_oneshot,.-padlock_sha256_oneshot + +.globl padlock_sha256 +.type padlock_sha256,\@function,3 +.align 16 +padlock_sha256: + mov \$-1,%rax + mov %rdx,%rcx + .byte 0xf3,0x0f,0xa6,0xd0 # rep xsha256 + ret +.size padlock_sha256,.-padlock_sha256 +___ + +sub generate_mode { +my ($mode,$opcode) = @_; +# int padlock_$mode_encrypt(void *out, const void *inp, +# struct padlock_cipher_data *ctx, size_t len); +$code.=<<___; +.globl padlock_${mode}_encrypt +.type padlock_${mode}_encrypt,\@function,4 +.align 16 +padlock_${mode}_encrypt: + push %rbp + push %rbx + + xor %eax,%eax + test \$15,$ctx + jnz .L${mode}_abort + test \$15,$len + jnz .L${mode}_abort + lea .Lpadlock_saved_context(%rip),%rax + pushf + cld + call _padlock_verify_ctx + lea 16($ctx),$ctx # control word + xor %eax,%eax + xor %ebx,%ebx + test \$`1<<5`,($ctx) # align bit in control word + test \$0x0f,$out + setz %al # !out_misaligned + test \$0x0f,$inp + setz %bl # !inp_misaligned + test %ebx,%eax + jnz .L${mode}_aligned + neg %rax + mov \$$PADLOCK_CHUNK,$chunk + not %rax # out_misaligned?-1:0 + lea (%rsp),%rbp + cmp $chunk,$len + cmovc $len,$chunk # chunk=len>PADLOCK_CHUNK?PADLOCK_CHUNK:len + and $chunk,%rax # out_misaligned?chunk:0 + mov $len,$chunk + neg %rax + and \$$PADLOCK_CHUNK-1,$chunk # chunk%=PADLOCK_CHUNK + lea (%rax,%rbp),%rsp + jmp .L${mode}_loop +.align 16 +.L${mode}_loop: + mov $out,%r8 # save parameters + mov $inp,%r9 + mov $len,%r10 + mov $chunk,$len + mov $chunk,%r11 + test \$0x0f,$out # out_misaligned + cmovnz %rsp,$out + test \$0x0f,$inp # inp_misaligned + jz .L${mode}_inp_aligned + shr \$3,$len + .byte 0xf3,0x48,0xa5 # rep movsq + sub $chunk,$out + mov $chunk,$len + mov $out,$inp +.L${mode}_inp_aligned: + lea -16($ctx),%rax # ivp + lea 16($ctx),%rbx # key + shr \$4,$len + .byte 0xf3,0x0f,0xa7,$opcode # rep xcrypt* +___ +$code.=<<___ if ($mode !~ /ecb|ctr/); + movdqa (%rax),%xmm0 + movdqa %xmm0,-16($ctx) # copy [or refresh] iv +___ +$code.=<<___; + mov %r8,$out # restore paramters + mov %r11,$chunk + test \$0x0f,$out + jz .L${mode}_out_aligned + mov $chunk,$len + shr \$3,$len + lea (%rsp),$inp + .byte 0xf3,0x48,0xa5 # rep movsq + sub $chunk,$out +.L${mode}_out_aligned: + mov %r9,$inp + mov %r10,$len + add $chunk,$out + add $chunk,$inp + sub $chunk,$len + mov \$$PADLOCK_CHUNK,$chunk + jnz .L${mode}_loop + + test \$0x0f,$out + jz .L${mode}_done + + mov %rbp,$len + mov %rsp,$out + sub %rsp,$len + xor %rax,%rax + shr \$3,$len + .byte 0xf3,0x48,0xab # rep stosq +.L${mode}_done: + lea (%rbp),%rsp + jmp .L${mode}_exit + +.align 16 +.L${mode}_aligned: + lea -16($ctx),%rax # ivp + lea 16($ctx),%rbx # key + shr \$4,$len # len/=AES_BLOCK_SIZE + .byte 0xf3,0x0f,0xa7,$opcode # rep xcrypt* +___ +$code.=<<___ if ($mode !~ /ecb|ctr/); + movdqa (%rax),%xmm0 + movdqa %xmm0,-16($ctx) # copy [or refresh] iv +___ +$code.=<<___; +.L${mode}_exit: + mov \$1,%eax + lea 8(%rsp),%rsp +.L${mode}_abort: + pop %rbx + pop %rbp + ret +.size padlock_${mode}_encrypt,.-padlock_${mode}_encrypt +___ +} + +&generate_mode("ecb",0xc8); +&generate_mode("cbc",0xd0); +&generate_mode("cfb",0xe0); +&generate_mode("ofb",0xe8); +&generate_mode("ctr16",0xd8); + +$code.=<<___; +.asciz "VIA Padlock x86_64 module, CRYPTOGAMS by <appro\@openssl.org>" +.align 16 +.data +.align 8 +.Lpadlock_saved_context: + .quad 0 +___ +$code =~ s/\`([^\`]*)\`/eval($1)/gem; + +print $code; + +close STDOUT; |