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| #! /usr/bin/env perl
| # Copyright 2013-2020 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
|
|
| ######################################################################
| ## Constant-time SSSE3 AES core implementation.
| ## version 0.1
| ##
| ## By Mike Hamburg (Stanford University), 2009
| ## Public domain.
| ##
| ## For details see http://shiftleft.org/papers/vector_aes/ and
| ## http://crypto.stanford.edu/vpaes/.
|
| # CBC encrypt/decrypt performance in cycles per byte processed with
| # 128-bit key.
| #
| # aes-ppc.pl this
| # PPC74x0/G4e 35.5/52.1/(23.8) 11.9(*)/15.4
| # PPC970/G5 37.9/55.0/(28.5) 22.2/28.5
| # POWER6 42.7/54.3/(28.2) 63.0/92.8(**)
| # POWER7 32.3/42.9/(18.4) 18.5/23.3
| #
| # (*) This is ~10% worse than reported in paper. The reason is
| # twofold. This module doesn't make any assumption about
| # key schedule (or data for that matter) alignment and handles
| # it in-line. Secondly it, being transliterated from
| # vpaes-x86_64.pl, relies on "nested inversion" better suited
| # for Intel CPUs.
| # (**) Inadequate POWER6 performance is due to astronomic AltiVec
| # latency, 9 cycles per simple logical operation.
|
| $flavour = shift;
|
| if ($flavour =~ /64/) {
| $SIZE_T =8;
| $LRSAVE =2*$SIZE_T;
| $STU ="stdu";
| $POP ="ld";
| $PUSH ="std";
| $UCMP ="cmpld";
| } elsif ($flavour =~ /32/) {
| $SIZE_T =4;
| $LRSAVE =$SIZE_T;
| $STU ="stwu";
| $POP ="lwz";
| $PUSH ="stw";
| $UCMP ="cmplw";
| } else { die "nonsense $flavour"; }
|
| $sp="r1";
| $FRAME=6*$SIZE_T+13*16; # 13*16 is for v20-v31 offload
|
| $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
| ( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
| ( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
| die "can't locate ppc-xlate.pl";
|
| open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!";
|
| $code.=<<___;
| .machine "any"
|
| .text
|
| .align 7 # totally strategic alignment
| _vpaes_consts:
| Lk_mc_forward: # mc_forward
| .long 0x01020300, 0x05060704, 0x090a0b08, 0x0d0e0f0c ?inv
| .long 0x05060704, 0x090a0b08, 0x0d0e0f0c, 0x01020300 ?inv
| .long 0x090a0b08, 0x0d0e0f0c, 0x01020300, 0x05060704 ?inv
| .long 0x0d0e0f0c, 0x01020300, 0x05060704, 0x090a0b08 ?inv
| Lk_mc_backward: # mc_backward
| .long 0x03000102, 0x07040506, 0x0b08090a, 0x0f0c0d0e ?inv
| .long 0x0f0c0d0e, 0x03000102, 0x07040506, 0x0b08090a ?inv
| .long 0x0b08090a, 0x0f0c0d0e, 0x03000102, 0x07040506 ?inv
| .long 0x07040506, 0x0b08090a, 0x0f0c0d0e, 0x03000102 ?inv
| Lk_sr: # sr
| .long 0x00010203, 0x04050607, 0x08090a0b, 0x0c0d0e0f ?inv
| .long 0x00050a0f, 0x04090e03, 0x080d0207, 0x0c01060b ?inv
| .long 0x0009020b, 0x040d060f, 0x08010a03, 0x0c050e07 ?inv
| .long 0x000d0a07, 0x04010e0b, 0x0805020f, 0x0c090603 ?inv
|
| ##
| ## "Hot" constants
| ##
| Lk_inv: # inv, inva
| .long 0xf001080d, 0x0f06050e, 0x020c0b0a, 0x09030704 ?rev
| .long 0xf0070b0f, 0x060a0401, 0x09080502, 0x0c0e0d03 ?rev
| Lk_ipt: # input transform (lo, hi)
| .long 0x00702a5a, 0x98e8b2c2, 0x08782252, 0x90e0baca ?rev
| .long 0x004d7c31, 0x7d30014c, 0x81ccfdb0, 0xfcb180cd ?rev
| Lk_sbo: # sbou, sbot
| .long 0x00c7bd6f, 0x176dd2d0, 0x78a802c5, 0x7abfaa15 ?rev
| .long 0x006abb5f, 0xa574e4cf, 0xfa352b41, 0xd1901e8e ?rev
| Lk_sb1: # sb1u, sb1t
| .long 0x0023e2fa, 0x15d41836, 0xefd92e0d, 0xc1ccf73b ?rev
| .long 0x003e50cb, 0x8fe19bb1, 0x44f52a14, 0x6e7adfa5 ?rev
| Lk_sb2: # sb2u, sb2t
| .long 0x0029e10a, 0x4088eb69, 0x4a2382ab, 0xc863a1c2 ?rev
| .long 0x0024710b, 0xc6937ae2, 0xcd2f98bc, 0x55e9b75e ?rev
|
| ##
| ## Decryption stuff
| ##
| Lk_dipt: # decryption input transform
| .long 0x005f540b, 0x045b500f, 0x1a454e11, 0x1e414a15 ?rev
| .long 0x00650560, 0xe683e386, 0x94f191f4, 0x72177712 ?rev
| Lk_dsbo: # decryption sbox final output
| .long 0x0040f97e, 0x53ea8713, 0x2d3e94d4, 0xb96daac7 ?rev
| .long 0x001d4493, 0x0f56d712, 0x9c8ec5d8, 0x59814bca ?rev
| Lk_dsb9: # decryption sbox output *9*u, *9*t
| .long 0x00d6869a, 0x53031c85, 0xc94c994f, 0x501fd5ca ?rev
| .long 0x0049d7ec, 0x89173bc0, 0x65a5fbb2, 0x9e2c5e72 ?rev
| Lk_dsbd: # decryption sbox output *D*u, *D*t
| .long 0x00a2b1e6, 0xdfcc577d, 0x39442a88, 0x139b6ef5 ?rev
| .long 0x00cbc624, 0xf7fae23c, 0xd3efde15, 0x0d183129 ?rev
| Lk_dsbb: # decryption sbox output *B*u, *B*t
| .long 0x0042b496, 0x926422d0, 0x04d4f2b0, 0xf6462660 ?rev
| .long 0x006759cd, 0xa69894c1, 0x6baa5532, 0x3e0cfff3 ?rev
| Lk_dsbe: # decryption sbox output *E*u, *E*t
| .long 0x00d0d426, 0x9692f246, 0xb0f6b464, 0x04604222 ?rev
| .long 0x00c1aaff, 0xcda6550c, 0x323e5998, 0x6bf36794 ?rev
|
| ##
| ## Key schedule constants
| ##
| Lk_dksd: # decryption key schedule: invskew x*D
| .long 0x0047e4a3, 0x5d1ab9fe, 0xf9be1d5a, 0xa4e34007 ?rev
| .long 0x008336b5, 0xf477c241, 0x1e9d28ab, 0xea69dc5f ?rev
| Lk_dksb: # decryption key schedule: invskew x*B
| .long 0x00d55085, 0x1fca4f9a, 0x994cc91c, 0x8653d603 ?rev
| .long 0x004afcb6, 0xa7ed5b11, 0xc882347e, 0x6f2593d9 ?rev
| Lk_dkse: # decryption key schedule: invskew x*E + 0x63
| .long 0x00d6c91f, 0xca1c03d5, 0x86504f99, 0x4c9a8553 ?rev
| .long 0xe87bdc4f, 0x059631a2, 0x8714b320, 0x6af95ecd ?rev
| Lk_dks9: # decryption key schedule: invskew x*9
| .long 0x00a7d97e, 0xc86f11b6, 0xfc5b2582, 0x3493ed4a ?rev
| .long 0x00331427, 0x62517645, 0xcefddae9, 0xac9fb88b ?rev
|
| Lk_rcon: # rcon
| .long 0xb6ee9daf, 0xb991831f, 0x817d7c4d, 0x08982a70 ?asis
| Lk_s63:
| .long 0x5b5b5b5b, 0x5b5b5b5b, 0x5b5b5b5b, 0x5b5b5b5b ?asis
|
| Lk_opt: # output transform
| .long 0x0060b6d6, 0x29499fff, 0x0868bede, 0x214197f7 ?rev
| .long 0x00ecbc50, 0x51bded01, 0xe00c5cb0, 0xb15d0de1 ?rev
| Lk_deskew: # deskew tables: inverts the sbox's "skew"
| .long 0x00e3a447, 0x40a3e407, 0x1af9be5d, 0x5ab9fe1d ?rev
| .long 0x0069ea83, 0xdcb5365f, 0x771e9df4, 0xabc24128 ?rev
| .align 5
| Lconsts:
| mflr r0
| bcl 20,31,\$+4
| mflr r12 #vvvvv "distance between . and _vpaes_consts
| addi r12,r12,-0x308
| mtlr r0
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
| .asciz "Vector Permutation AES for AltiVec, Mike Hamburg (Stanford University)"
| .align 6
| ___
|
| my ($inptail,$inpperm,$outhead,$outperm,$outmask,$keyperm) = map("v$_",(26..31));
| {
| my ($inp,$out,$key) = map("r$_",(3..5));
|
| my ($invlo,$invhi,$iptlo,$ipthi,$sbou,$sbot) = map("v$_",(10..15));
| my ($sb1u,$sb1t,$sb2u,$sb2t) = map("v$_",(16..19));
| my ($sb9u,$sb9t,$sbdu,$sbdt,$sbbu,$sbbt,$sbeu,$sbet)=map("v$_",(16..23));
|
| $code.=<<___;
| ##
| ## _aes_preheat
| ##
| ## Fills register %r10 -> .aes_consts (so you can -fPIC)
| ## and %xmm9-%xmm15 as specified below.
| ##
| .align 4
| _vpaes_encrypt_preheat:
| mflr r8
| bl Lconsts
| mtlr r8
| li r11, 0xc0 # Lk_inv
| li r10, 0xd0
| li r9, 0xe0 # Lk_ipt
| li r8, 0xf0
| vxor v7, v7, v7 # 0x00..00
| vspltisb v8,4 # 0x04..04
| vspltisb v9,0x0f # 0x0f..0f
| lvx $invlo, r12, r11
| li r11, 0x100
| lvx $invhi, r12, r10
| li r10, 0x110
| lvx $iptlo, r12, r9
| li r9, 0x120
| lvx $ipthi, r12, r8
| li r8, 0x130
| lvx $sbou, r12, r11
| li r11, 0x140
| lvx $sbot, r12, r10
| li r10, 0x150
| lvx $sb1u, r12, r9
| lvx $sb1t, r12, r8
| lvx $sb2u, r12, r11
| lvx $sb2t, r12, r10
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| ##
| ## _aes_encrypt_core
| ##
| ## AES-encrypt %xmm0.
| ##
| ## Inputs:
| ## %xmm0 = input
| ## %xmm9-%xmm15 as in _vpaes_preheat
| ## (%rdx) = scheduled keys
| ##
| ## Output in %xmm0
| ## Clobbers %xmm1-%xmm6, %r9, %r10, %r11, %rax
| ##
| ##
| .align 5
| _vpaes_encrypt_core:
| lwz r8, 240($key) # pull rounds
| li r9, 16
| lvx v5, 0, $key # vmovdqu (%r9), %xmm5 # round0 key
| li r11, 0x10
| lvx v6, r9, $key
| addi r9, r9, 16
| ?vperm v5, v5, v6, $keyperm # align round key
| addi r10, r11, 0x40
| vsrb v1, v0, v8 # vpsrlb \$4, %xmm0, %xmm0
| vperm v0, $iptlo, $iptlo, v0 # vpshufb %xmm1, %xmm2, %xmm1
| vperm v1, $ipthi, $ipthi, v1 # vpshufb %xmm0, %xmm3, %xmm2
| vxor v0, v0, v5 # vpxor %xmm5, %xmm1, %xmm0
| vxor v0, v0, v1 # vpxor %xmm2, %xmm0, %xmm0
| mtctr r8
| b Lenc_entry
|
| .align 4
| Lenc_loop:
| # middle of middle round
| vperm v4, $sb1t, v7, v2 # vpshufb %xmm2, %xmm13, %xmm4 # 4 = sb1u
| lvx v1, r12, r11 # vmovdqa -0x40(%r11,%r10), %xmm1 # .Lk_mc_forward[]
| addi r11, r11, 16
| vperm v0, $sb1u, v7, v3 # vpshufb %xmm3, %xmm12, %xmm0 # 0 = sb1t
| vxor v4, v4, v5 # vpxor %xmm5, %xmm4, %xmm4 # 4 = sb1u + k
| andi. r11, r11, 0x30 # and \$0x30, %r11 # ... mod 4
| vperm v5, $sb2t, v7, v2 # vpshufb %xmm2, %xmm15, %xmm5 # 4 = sb2u
| vxor v0, v0, v4 # vpxor %xmm4, %xmm0, %xmm0 # 0 = A
| vperm v2, $sb2u, v7, v3 # vpshufb %xmm3, %xmm14, %xmm2 # 2 = sb2t
| lvx v4, r12, r10 # vmovdqa (%r11,%r10), %xmm4 # .Lk_mc_backward[]
| addi r10, r11, 0x40
| vperm v3, v0, v7, v1 # vpshufb %xmm1, %xmm0, %xmm3 # 0 = B
| vxor v2, v2, v5 # vpxor %xmm5, %xmm2, %xmm2 # 2 = 2A
| vperm v0, v0, v7, v4 # vpshufb %xmm4, %xmm0, %xmm0 # 3 = D
| vxor v3, v3, v2 # vpxor %xmm2, %xmm3, %xmm3 # 0 = 2A+B
| vperm v4, v3, v7, v1 # vpshufb %xmm1, %xmm3, %xmm4 # 0 = 2B+C
| vxor v0, v0, v3 # vpxor %xmm3, %xmm0, %xmm0 # 3 = 2A+B+D
| vxor v0, v0, v4 # vpxor %xmm4, %xmm0, %xmm0 # 0 = 2A+3B+C+D
|
| Lenc_entry:
| # top of round
| vsrb v1, v0, v8 # vpsrlb \$4, %xmm0, %xmm0 # 1 = i
| vperm v5, $invhi, $invhi, v0 # vpshufb %xmm1, %xmm11, %xmm5 # 2 = a/k
| vxor v0, v0, v1 # vpxor %xmm0, %xmm1, %xmm1 # 0 = j
| vperm v3, $invlo, $invlo, v1 # vpshufb %xmm0, %xmm10, %xmm3 # 3 = 1/i
| vperm v4, $invlo, $invlo, v0 # vpshufb %xmm1, %xmm10, %xmm4 # 4 = 1/j
| vand v0, v0, v9
| vxor v3, v3, v5 # vpxor %xmm5, %xmm3, %xmm3 # 3 = iak = 1/i + a/k
| vxor v4, v4, v5 # vpxor %xmm5, %xmm4, %xmm4 # 4 = jak = 1/j + a/k
| vperm v2, $invlo, v7, v3 # vpshufb %xmm3, %xmm10, %xmm2 # 2 = 1/iak
| vmr v5, v6
| lvx v6, r9, $key # vmovdqu (%r9), %xmm5
| vperm v3, $invlo, v7, v4 # vpshufb %xmm4, %xmm10, %xmm3 # 3 = 1/jak
| addi r9, r9, 16
| vxor v2, v2, v0 # vpxor %xmm1, %xmm2, %xmm2 # 2 = io
| ?vperm v5, v5, v6, $keyperm # align round key
| vxor v3, v3, v1 # vpxor %xmm0, %xmm3, %xmm3 # 3 = jo
| bdnz Lenc_loop
|
| # middle of last round
| addi r10, r11, 0x80
| # vmovdqa -0x60(%r10), %xmm4 # 3 : sbou .Lk_sbo
| # vmovdqa -0x50(%r10), %xmm0 # 0 : sbot .Lk_sbo+16
| vperm v4, $sbou, v7, v2 # vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbou
| lvx v1, r12, r10 # vmovdqa 0x40(%r11,%r10), %xmm1 # .Lk_sr[]
| vperm v0, $sbot, v7, v3 # vpshufb %xmm3, %xmm0, %xmm0 # 0 = sb1t
| vxor v4, v4, v5 # vpxor %xmm5, %xmm4, %xmm4 # 4 = sb1u + k
| vxor v0, v0, v4 # vpxor %xmm4, %xmm0, %xmm0 # 0 = A
| vperm v0, v0, v7, v1 # vpshufb %xmm1, %xmm0, %xmm0
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| .globl .vpaes_encrypt
| .align 5
| .vpaes_encrypt:
| $STU $sp,-$FRAME($sp)
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mflr r6
| mfspr r7, 256 # save vrsave
| stvx v20,r10,$sp
| addi r10,r10,32
| stvx v21,r11,$sp
| addi r11,r11,32
| stvx v22,r10,$sp
| addi r10,r10,32
| stvx v23,r11,$sp
| addi r11,r11,32
| stvx v24,r10,$sp
| addi r10,r10,32
| stvx v25,r11,$sp
| addi r11,r11,32
| stvx v26,r10,$sp
| addi r10,r10,32
| stvx v27,r11,$sp
| addi r11,r11,32
| stvx v28,r10,$sp
| addi r10,r10,32
| stvx v29,r11,$sp
| addi r11,r11,32
| stvx v30,r10,$sp
| stvx v31,r11,$sp
| stw r7,`$FRAME-4`($sp) # save vrsave
| li r0, -1
| $PUSH r6,`$FRAME+$LRSAVE`($sp)
| mtspr 256, r0 # preserve all AltiVec registers
|
| bl _vpaes_encrypt_preheat
|
| ?lvsl $inpperm, 0, $inp # prepare for unaligned access
| lvx v0, 0, $inp
| addi $inp, $inp, 15 # 15 is not a typo
| ?lvsr $outperm, 0, $out
| ?lvsl $keyperm, 0, $key # prepare for unaligned access
| lvx $inptail, 0, $inp # redundant in aligned case
| ?vperm v0, v0, $inptail, $inpperm
|
| bl _vpaes_encrypt_core
|
| andi. r8, $out, 15
| li r9, 16
| beq Lenc_out_aligned
|
| vperm v0, v0, v0, $outperm # rotate right/left
| mtctr r9
| Lenc_out_unaligned:
| stvebx v0, 0, $out
| addi $out, $out, 1
| bdnz Lenc_out_unaligned
| b Lenc_done
|
| .align 4
| Lenc_out_aligned:
| stvx v0, 0, $out
| Lenc_done:
|
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mtlr r6
| mtspr 256, r7 # restore vrsave
| lvx v20,r10,$sp
| addi r10,r10,32
| lvx v21,r11,$sp
| addi r11,r11,32
| lvx v22,r10,$sp
| addi r10,r10,32
| lvx v23,r11,$sp
| addi r11,r11,32
| lvx v24,r10,$sp
| addi r10,r10,32
| lvx v25,r11,$sp
| addi r11,r11,32
| lvx v26,r10,$sp
| addi r10,r10,32
| lvx v27,r11,$sp
| addi r11,r11,32
| lvx v28,r10,$sp
| addi r10,r10,32
| lvx v29,r11,$sp
| addi r11,r11,32
| lvx v30,r10,$sp
| lvx v31,r11,$sp
| addi $sp,$sp,$FRAME
| blr
| .long 0
| .byte 0,12,0x04,1,0x80,0,3,0
| .long 0
| .size .vpaes_encrypt,.-.vpaes_encrypt
|
| .align 4
| _vpaes_decrypt_preheat:
| mflr r8
| bl Lconsts
| mtlr r8
| li r11, 0xc0 # Lk_inv
| li r10, 0xd0
| li r9, 0x160 # Ldipt
| li r8, 0x170
| vxor v7, v7, v7 # 0x00..00
| vspltisb v8,4 # 0x04..04
| vspltisb v9,0x0f # 0x0f..0f
| lvx $invlo, r12, r11
| li r11, 0x180
| lvx $invhi, r12, r10
| li r10, 0x190
| lvx $iptlo, r12, r9
| li r9, 0x1a0
| lvx $ipthi, r12, r8
| li r8, 0x1b0
| lvx $sbou, r12, r11
| li r11, 0x1c0
| lvx $sbot, r12, r10
| li r10, 0x1d0
| lvx $sb9u, r12, r9
| li r9, 0x1e0
| lvx $sb9t, r12, r8
| li r8, 0x1f0
| lvx $sbdu, r12, r11
| li r11, 0x200
| lvx $sbdt, r12, r10
| li r10, 0x210
| lvx $sbbu, r12, r9
| lvx $sbbt, r12, r8
| lvx $sbeu, r12, r11
| lvx $sbet, r12, r10
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| ##
| ## Decryption core
| ##
| ## Same API as encryption core.
| ##
| .align 4
| _vpaes_decrypt_core:
| lwz r8, 240($key) # pull rounds
| li r9, 16
| lvx v5, 0, $key # vmovdqu (%r9), %xmm4 # round0 key
| li r11, 0x30
| lvx v6, r9, $key
| addi r9, r9, 16
| ?vperm v5, v5, v6, $keyperm # align round key
| vsrb v1, v0, v8 # vpsrlb \$4, %xmm0, %xmm0
| vperm v0, $iptlo, $iptlo, v0 # vpshufb %xmm1, %xmm2, %xmm2
| vperm v1, $ipthi, $ipthi, v1 # vpshufb %xmm0, %xmm1, %xmm0
| vxor v0, v0, v5 # vpxor %xmm4, %xmm2, %xmm2
| vxor v0, v0, v1 # vpxor %xmm2, %xmm0, %xmm0
| mtctr r8
| b Ldec_entry
|
| .align 4
| Ldec_loop:
| #
| # Inverse mix columns
| #
| lvx v0, r12, r11 # v5 and v0 are flipped
| # vmovdqa -0x20(%r10),%xmm4 # 4 : sb9u
| # vmovdqa -0x10(%r10),%xmm1 # 0 : sb9t
| vperm v4, $sb9u, v7, v2 # vpshufb %xmm2, %xmm4, %xmm4 # 4 = sb9u
| subi r11, r11, 16
| vperm v1, $sb9t, v7, v3 # vpshufb %xmm3, %xmm1, %xmm1 # 0 = sb9t
| andi. r11, r11, 0x30
| vxor v5, v5, v4 # vpxor %xmm4, %xmm0, %xmm0
| # vmovdqa 0x00(%r10),%xmm4 # 4 : sbdu
| vxor v5, v5, v1 # vpxor %xmm1, %xmm0, %xmm0 # 0 = ch
| # vmovdqa 0x10(%r10),%xmm1 # 0 : sbdt
|
| vperm v4, $sbdu, v7, v2 # vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbdu
| vperm v5, v5, v7, v0 # vpshufb %xmm5, %xmm0, %xmm0 # MC ch
| vperm v1, $sbdt, v7, v3 # vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbdt
| vxor v5, v5, v4 # vpxor %xmm4, %xmm0, %xmm0 # 4 = ch
| # vmovdqa 0x20(%r10), %xmm4 # 4 : sbbu
| vxor v5, v5, v1 # vpxor %xmm1, %xmm0, %xmm0 # 0 = ch
| # vmovdqa 0x30(%r10), %xmm1 # 0 : sbbt
|
| vperm v4, $sbbu, v7, v2 # vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbbu
| vperm v5, v5, v7, v0 # vpshufb %xmm5, %xmm0, %xmm0 # MC ch
| vperm v1, $sbbt, v7, v3 # vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbbt
| vxor v5, v5, v4 # vpxor %xmm4, %xmm0, %xmm0 # 4 = ch
| # vmovdqa 0x40(%r10), %xmm4 # 4 : sbeu
| vxor v5, v5, v1 # vpxor %xmm1, %xmm0, %xmm0 # 0 = ch
| # vmovdqa 0x50(%r10), %xmm1 # 0 : sbet
|
| vperm v4, $sbeu, v7, v2 # vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbeu
| vperm v5, v5, v7, v0 # vpshufb %xmm5, %xmm0, %xmm0 # MC ch
| vperm v1, $sbet, v7, v3 # vpshufb %xmm3, %xmm1, %xmm1 # 0 = sbet
| vxor v0, v5, v4 # vpxor %xmm4, %xmm0, %xmm0 # 4 = ch
| vxor v0, v0, v1 # vpxor %xmm1, %xmm0, %xmm0 # 0 = ch
|
| Ldec_entry:
| # top of round
| vsrb v1, v0, v8 # vpsrlb \$4, %xmm0, %xmm0 # 1 = i
| vperm v2, $invhi, $invhi, v0 # vpshufb %xmm1, %xmm11, %xmm2 # 2 = a/k
| vxor v0, v0, v1 # vpxor %xmm0, %xmm1, %xmm1 # 0 = j
| vperm v3, $invlo, $invlo, v1 # vpshufb %xmm0, %xmm10, %xmm3 # 3 = 1/i
| vperm v4, $invlo, $invlo, v0 # vpshufb %xmm1, %xmm10, %xmm4 # 4 = 1/j
| vand v0, v0, v9
| vxor v3, v3, v2 # vpxor %xmm2, %xmm3, %xmm3 # 3 = iak = 1/i + a/k
| vxor v4, v4, v2 # vpxor %xmm2, %xmm4, %xmm4 # 4 = jak = 1/j + a/k
| vperm v2, $invlo, v7, v3 # vpshufb %xmm3, %xmm10, %xmm2 # 2 = 1/iak
| vmr v5, v6
| lvx v6, r9, $key # vmovdqu (%r9), %xmm0
| vperm v3, $invlo, v7, v4 # vpshufb %xmm4, %xmm10, %xmm3 # 3 = 1/jak
| addi r9, r9, 16
| vxor v2, v2, v0 # vpxor %xmm1, %xmm2, %xmm2 # 2 = io
| ?vperm v5, v5, v6, $keyperm # align round key
| vxor v3, v3, v1 # vpxor %xmm0, %xmm3, %xmm3 # 3 = jo
| bdnz Ldec_loop
|
| # middle of last round
| addi r10, r11, 0x80
| # vmovdqa 0x60(%r10), %xmm4 # 3 : sbou
| vperm v4, $sbou, v7, v2 # vpshufb %xmm2, %xmm4, %xmm4 # 4 = sbou
| # vmovdqa 0x70(%r10), %xmm1 # 0 : sbot
| lvx v2, r12, r10 # vmovdqa -0x160(%r11), %xmm2 # .Lk_sr-.Lk_dsbd=-0x160
| vperm v1, $sbot, v7, v3 # vpshufb %xmm3, %xmm1, %xmm1 # 0 = sb1t
| vxor v4, v4, v5 # vpxor %xmm0, %xmm4, %xmm4 # 4 = sb1u + k
| vxor v0, v1, v4 # vpxor %xmm4, %xmm1, %xmm0 # 0 = A
| vperm v0, v0, v7, v2 # vpshufb %xmm2, %xmm0, %xmm0
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| .globl .vpaes_decrypt
| .align 5
| .vpaes_decrypt:
| $STU $sp,-$FRAME($sp)
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mflr r6
| mfspr r7, 256 # save vrsave
| stvx v20,r10,$sp
| addi r10,r10,32
| stvx v21,r11,$sp
| addi r11,r11,32
| stvx v22,r10,$sp
| addi r10,r10,32
| stvx v23,r11,$sp
| addi r11,r11,32
| stvx v24,r10,$sp
| addi r10,r10,32
| stvx v25,r11,$sp
| addi r11,r11,32
| stvx v26,r10,$sp
| addi r10,r10,32
| stvx v27,r11,$sp
| addi r11,r11,32
| stvx v28,r10,$sp
| addi r10,r10,32
| stvx v29,r11,$sp
| addi r11,r11,32
| stvx v30,r10,$sp
| stvx v31,r11,$sp
| stw r7,`$FRAME-4`($sp) # save vrsave
| li r0, -1
| $PUSH r6,`$FRAME+$LRSAVE`($sp)
| mtspr 256, r0 # preserve all AltiVec registers
|
| bl _vpaes_decrypt_preheat
|
| ?lvsl $inpperm, 0, $inp # prepare for unaligned access
| lvx v0, 0, $inp
| addi $inp, $inp, 15 # 15 is not a typo
| ?lvsr $outperm, 0, $out
| ?lvsl $keyperm, 0, $key
| lvx $inptail, 0, $inp # redundant in aligned case
| ?vperm v0, v0, $inptail, $inpperm
|
| bl _vpaes_decrypt_core
|
| andi. r8, $out, 15
| li r9, 16
| beq Ldec_out_aligned
|
| vperm v0, v0, v0, $outperm # rotate right/left
| mtctr r9
| Ldec_out_unaligned:
| stvebx v0, 0, $out
| addi $out, $out, 1
| bdnz Ldec_out_unaligned
| b Ldec_done
|
| .align 4
| Ldec_out_aligned:
| stvx v0, 0, $out
| Ldec_done:
|
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mtlr r6
| mtspr 256, r7 # restore vrsave
| lvx v20,r10,$sp
| addi r10,r10,32
| lvx v21,r11,$sp
| addi r11,r11,32
| lvx v22,r10,$sp
| addi r10,r10,32
| lvx v23,r11,$sp
| addi r11,r11,32
| lvx v24,r10,$sp
| addi r10,r10,32
| lvx v25,r11,$sp
| addi r11,r11,32
| lvx v26,r10,$sp
| addi r10,r10,32
| lvx v27,r11,$sp
| addi r11,r11,32
| lvx v28,r10,$sp
| addi r10,r10,32
| lvx v29,r11,$sp
| addi r11,r11,32
| lvx v30,r10,$sp
| lvx v31,r11,$sp
| addi $sp,$sp,$FRAME
| blr
| .long 0
| .byte 0,12,0x04,1,0x80,0,3,0
| .long 0
| .size .vpaes_decrypt,.-.vpaes_decrypt
|
| .globl .vpaes_cbc_encrypt
| .align 5
| .vpaes_cbc_encrypt:
| ${UCMP}i r5,16
| bltlr-
|
| $STU $sp,-`($FRAME+2*$SIZE_T)`($sp)
| mflr r0
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mfspr r12, 256
| stvx v20,r10,$sp
| addi r10,r10,32
| stvx v21,r11,$sp
| addi r11,r11,32
| stvx v22,r10,$sp
| addi r10,r10,32
| stvx v23,r11,$sp
| addi r11,r11,32
| stvx v24,r10,$sp
| addi r10,r10,32
| stvx v25,r11,$sp
| addi r11,r11,32
| stvx v26,r10,$sp
| addi r10,r10,32
| stvx v27,r11,$sp
| addi r11,r11,32
| stvx v28,r10,$sp
| addi r10,r10,32
| stvx v29,r11,$sp
| addi r11,r11,32
| stvx v30,r10,$sp
| stvx v31,r11,$sp
| stw r12,`$FRAME-4`($sp) # save vrsave
| $PUSH r30,`$FRAME+$SIZE_T*0`($sp)
| $PUSH r31,`$FRAME+$SIZE_T*1`($sp)
| li r9, -16
| $PUSH r0, `$FRAME+$SIZE_T*2+$LRSAVE`($sp)
|
| and r30, r5, r9 # copy length&-16
| andi. r9, $out, 15 # is $out aligned?
| mr r5, r6 # copy pointer to key
| mr r31, r7 # copy pointer to iv
| li r6, -1
| mcrf cr1, cr0 # put aside $out alignment flag
| mr r7, r12 # copy vrsave
| mtspr 256, r6 # preserve all AltiVec registers
|
| lvx v24, 0, r31 # load [potentially unaligned] iv
| li r9, 15
| ?lvsl $inpperm, 0, r31
| lvx v25, r9, r31
| ?vperm v24, v24, v25, $inpperm
|
| cmpwi r8, 0 # test direction
| neg r8, $inp # prepare for unaligned access
| vxor v7, v7, v7
| ?lvsl $keyperm, 0, $key
| ?lvsr $outperm, 0, $out
| ?lvsr $inpperm, 0, r8 # -$inp
| vnor $outmask, v7, v7 # 0xff..ff
| lvx $inptail, 0, $inp
| ?vperm $outmask, v7, $outmask, $outperm
| addi $inp, $inp, 15 # 15 is not a typo
|
| beq Lcbc_decrypt
|
| bl _vpaes_encrypt_preheat
| li r0, 16
|
| beq cr1, Lcbc_enc_loop # $out is aligned
|
| vmr v0, $inptail
| lvx $inptail, 0, $inp
| addi $inp, $inp, 16
| ?vperm v0, v0, $inptail, $inpperm
| vxor v0, v0, v24 # ^= iv
|
| bl _vpaes_encrypt_core
|
| andi. r8, $out, 15
| vmr v24, v0 # put aside iv
| sub r9, $out, r8
| vperm $outhead, v0, v0, $outperm # rotate right/left
|
| Lcbc_enc_head:
| stvebx $outhead, r8, r9
| cmpwi r8, 15
| addi r8, r8, 1
| bne Lcbc_enc_head
|
| sub. r30, r30, r0 # len -= 16
| addi $out, $out, 16
| beq Lcbc_unaligned_done
|
| Lcbc_enc_loop:
| vmr v0, $inptail
| lvx $inptail, 0, $inp
| addi $inp, $inp, 16
| ?vperm v0, v0, $inptail, $inpperm
| vxor v0, v0, v24 # ^= iv
|
| bl _vpaes_encrypt_core
|
| vmr v24, v0 # put aside iv
| sub. r30, r30, r0 # len -= 16
| vperm v0, v0, v0, $outperm # rotate right/left
| vsel v1, $outhead, v0, $outmask
| vmr $outhead, v0
| stvx v1, 0, $out
| addi $out, $out, 16
| bne Lcbc_enc_loop
|
| b Lcbc_done
|
| .align 5
| Lcbc_decrypt:
| bl _vpaes_decrypt_preheat
| li r0, 16
|
| beq cr1, Lcbc_dec_loop # $out is aligned
|
| vmr v0, $inptail
| lvx $inptail, 0, $inp
| addi $inp, $inp, 16
| ?vperm v0, v0, $inptail, $inpperm
| vmr v25, v0 # put aside input
|
| bl _vpaes_decrypt_core
|
| andi. r8, $out, 15
| vxor v0, v0, v24 # ^= iv
| vmr v24, v25
| sub r9, $out, r8
| vperm $outhead, v0, v0, $outperm # rotate right/left
|
| Lcbc_dec_head:
| stvebx $outhead, r8, r9
| cmpwi r8, 15
| addi r8, r8, 1
| bne Lcbc_dec_head
|
| sub. r30, r30, r0 # len -= 16
| addi $out, $out, 16
| beq Lcbc_unaligned_done
|
| Lcbc_dec_loop:
| vmr v0, $inptail
| lvx $inptail, 0, $inp
| addi $inp, $inp, 16
| ?vperm v0, v0, $inptail, $inpperm
| vmr v25, v0 # put aside input
|
| bl _vpaes_decrypt_core
|
| vxor v0, v0, v24 # ^= iv
| vmr v24, v25
| sub. r30, r30, r0 # len -= 16
| vperm v0, v0, v0, $outperm # rotate right/left
| vsel v1, $outhead, v0, $outmask
| vmr $outhead, v0
| stvx v1, 0, $out
| addi $out, $out, 16
| bne Lcbc_dec_loop
|
| Lcbc_done:
| beq cr1, Lcbc_write_iv # $out is aligned
|
| Lcbc_unaligned_done:
| andi. r8, $out, 15
| sub $out, $out, r8
| li r9, 0
| Lcbc_tail:
| stvebx $outhead, r9, $out
| addi r9, r9, 1
| cmpw r9, r8
| bne Lcbc_tail
|
| Lcbc_write_iv:
| neg r8, r31 # write [potentially unaligned] iv
| li r10, 4
| ?lvsl $outperm, 0, r8
| li r11, 8
| li r12, 12
| vperm v24, v24, v24, $outperm # rotate right/left
| stvewx v24, 0, r31 # ivp is at least 32-bit aligned
| stvewx v24, r10, r31
| stvewx v24, r11, r31
| stvewx v24, r12, r31
|
| mtspr 256, r7 # restore vrsave
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| lvx v20,r10,$sp
| addi r10,r10,32
| lvx v21,r11,$sp
| addi r11,r11,32
| lvx v22,r10,$sp
| addi r10,r10,32
| lvx v23,r11,$sp
| addi r11,r11,32
| lvx v24,r10,$sp
| addi r10,r10,32
| lvx v25,r11,$sp
| addi r11,r11,32
| lvx v26,r10,$sp
| addi r10,r10,32
| lvx v27,r11,$sp
| addi r11,r11,32
| lvx v28,r10,$sp
| addi r10,r10,32
| lvx v29,r11,$sp
| addi r11,r11,32
| lvx v30,r10,$sp
| lvx v31,r11,$sp
| Lcbc_abort:
| $POP r0, `$FRAME+$SIZE_T*2+$LRSAVE`($sp)
| $POP r30,`$FRAME+$SIZE_T*0`($sp)
| $POP r31,`$FRAME+$SIZE_T*1`($sp)
| mtlr r0
| addi $sp,$sp,`$FRAME+$SIZE_T*2`
| blr
| .long 0
| .byte 0,12,0x04,1,0x80,2,6,0
| .long 0
| .size .vpaes_cbc_encrypt,.-.vpaes_cbc_encrypt
| ___
| }
| {
| my ($inp,$bits,$out)=map("r$_",(3..5));
| my $dir="cr1";
| my ($invlo,$invhi,$iptlo,$ipthi,$rcon) = map("v$_",(10..13,24));
|
| $code.=<<___;
| ########################################################
| ## ##
| ## AES key schedule ##
| ## ##
| ########################################################
| .align 4
| _vpaes_key_preheat:
| mflr r8
| bl Lconsts
| mtlr r8
| li r11, 0xc0 # Lk_inv
| li r10, 0xd0
| li r9, 0xe0 # L_ipt
| li r8, 0xf0
|
| vspltisb v8,4 # 0x04..04
| vxor v9,v9,v9 # 0x00..00
| lvx $invlo, r12, r11 # Lk_inv
| li r11, 0x120
| lvx $invhi, r12, r10
| li r10, 0x130
| lvx $iptlo, r12, r9 # Lk_ipt
| li r9, 0x220
| lvx $ipthi, r12, r8
| li r8, 0x230
|
| lvx v14, r12, r11 # Lk_sb1
| li r11, 0x240
| lvx v15, r12, r10
| li r10, 0x250
|
| lvx v16, r12, r9 # Lk_dksd
| li r9, 0x260
| lvx v17, r12, r8
| li r8, 0x270
| lvx v18, r12, r11 # Lk_dksb
| li r11, 0x280
| lvx v19, r12, r10
| li r10, 0x290
| lvx v20, r12, r9 # Lk_dkse
| li r9, 0x2a0
| lvx v21, r12, r8
| li r8, 0x2b0
| lvx v22, r12, r11 # Lk_dks9
| lvx v23, r12, r10
|
| lvx v24, r12, r9 # Lk_rcon
| lvx v25, 0, r12 # Lk_mc_forward[0]
| lvx v26, r12, r8 # Lks63
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| .align 4
| _vpaes_schedule_core:
| mflr r7
|
| bl _vpaes_key_preheat # load the tables
|
| #lvx v0, 0, $inp # vmovdqu (%rdi), %xmm0 # load key (unaligned)
| neg r8, $inp # prepare for unaligned access
| lvx v0, 0, $inp
| addi $inp, $inp, 15 # 15 is not typo
| ?lvsr $inpperm, 0, r8 # -$inp
| lvx v6, 0, $inp # v6 serves as inptail
| addi $inp, $inp, 8
| ?vperm v0, v0, v6, $inpperm
|
| # input transform
| vmr v3, v0 # vmovdqa %xmm0, %xmm3
| bl _vpaes_schedule_transform
| vmr v7, v0 # vmovdqa %xmm0, %xmm7
|
| bne $dir, Lschedule_am_decrypting
|
| # encrypting, output zeroth round key after transform
| li r8, 0x30 # mov \$0x30,%r8d
| li r9, 4
| li r10, 8
| li r11, 12
|
| ?lvsr $outperm, 0, $out # prepare for unaligned access
| vnor $outmask, v9, v9 # 0xff..ff
| ?vperm $outmask, v9, $outmask, $outperm
|
| #stvx v0, 0, $out # vmovdqu %xmm0, (%rdx)
| vperm $outhead, v0, v0, $outperm # rotate right/left
| stvewx $outhead, 0, $out # some are superfluous
| stvewx $outhead, r9, $out
| stvewx $outhead, r10, $out
| addi r10, r12, 0x80 # lea .Lk_sr(%rip),%r10
| stvewx $outhead, r11, $out
| b Lschedule_go
|
| Lschedule_am_decrypting:
| srwi r8, $bits, 1 # shr \$1,%r8d
| andi. r8, r8, 32 # and \$32,%r8d
| xori r8, r8, 32 # xor \$32,%r8d # nbits==192?0:32
| addi r10, r12, 0x80 # lea .Lk_sr(%rip),%r10
| # decrypting, output zeroth round key after shiftrows
| lvx v1, r8, r10 # vmovdqa (%r8,%r10), %xmm1
| li r9, 4
| li r10, 8
| li r11, 12
| vperm v4, v3, v3, v1 # vpshufb %xmm1, %xmm3, %xmm3
|
| neg r0, $out # prepare for unaligned access
| ?lvsl $outperm, 0, r0
| vnor $outmask, v9, v9 # 0xff..ff
| ?vperm $outmask, $outmask, v9, $outperm
|
| #stvx v4, 0, $out # vmovdqu %xmm3, (%rdx)
| vperm $outhead, v4, v4, $outperm # rotate right/left
| stvewx $outhead, 0, $out # some are superfluous
| stvewx $outhead, r9, $out
| stvewx $outhead, r10, $out
| addi r10, r12, 0x80 # lea .Lk_sr(%rip),%r10
| stvewx $outhead, r11, $out
| addi $out, $out, 15 # 15 is not typo
| xori r8, r8, 0x30 # xor \$0x30, %r8
|
| Lschedule_go:
| cmplwi $bits, 192 # cmp \$192, %esi
| bgt Lschedule_256
| beq Lschedule_192
| # 128: fall though
|
| ##
| ## .schedule_128
| ##
| ## 128-bit specific part of key schedule.
| ##
| ## This schedule is really simple, because all its parts
| ## are accomplished by the subroutines.
| ##
| Lschedule_128:
| li r0, 10 # mov \$10, %esi
| mtctr r0
|
| Loop_schedule_128:
| bl _vpaes_schedule_round
| bdz Lschedule_mangle_last # dec %esi
| bl _vpaes_schedule_mangle # write output
| b Loop_schedule_128
|
| ##
| ## .aes_schedule_192
| ##
| ## 192-bit specific part of key schedule.
| ##
| ## The main body of this schedule is the same as the 128-bit
| ## schedule, but with more smearing. The long, high side is
| ## stored in %xmm7 as before, and the short, low side is in
| ## the high bits of %xmm6.
| ##
| ## This schedule is somewhat nastier, however, because each
| ## round produces 192 bits of key material, or 1.5 round keys.
| ## Therefore, on each cycle we do 2 rounds and produce 3 round
| ## keys.
| ##
| .align 4
| Lschedule_192:
| li r0, 4 # mov \$4, %esi
| lvx v0, 0, $inp
| ?vperm v0, v6, v0, $inpperm
| ?vsldoi v0, v3, v0, 8 # vmovdqu 8(%rdi),%xmm0 # load key part 2 (very unaligned)
| bl _vpaes_schedule_transform # input transform
| ?vsldoi v6, v0, v9, 8
| ?vsldoi v6, v9, v6, 8 # clobber "low" side with zeros
| mtctr r0
|
| Loop_schedule_192:
| bl _vpaes_schedule_round
| ?vsldoi v0, v6, v0, 8 # vpalignr \$8,%xmm6,%xmm0,%xmm0
| bl _vpaes_schedule_mangle # save key n
| bl _vpaes_schedule_192_smear
| bl _vpaes_schedule_mangle # save key n+1
| bl _vpaes_schedule_round
| bdz Lschedule_mangle_last # dec %esi
| bl _vpaes_schedule_mangle # save key n+2
| bl _vpaes_schedule_192_smear
| b Loop_schedule_192
|
| ##
| ## .aes_schedule_256
| ##
| ## 256-bit specific part of key schedule.
| ##
| ## The structure here is very similar to the 128-bit
| ## schedule, but with an additional "low side" in
| ## %xmm6. The low side's rounds are the same as the
| ## high side's, except no rcon and no rotation.
| ##
| .align 4
| Lschedule_256:
| li r0, 7 # mov \$7, %esi
| addi $inp, $inp, 8
| lvx v0, 0, $inp # vmovdqu 16(%rdi),%xmm0 # load key part 2 (unaligned)
| ?vperm v0, v6, v0, $inpperm
| bl _vpaes_schedule_transform # input transform
| mtctr r0
|
| Loop_schedule_256:
| bl _vpaes_schedule_mangle # output low result
| vmr v6, v0 # vmovdqa %xmm0, %xmm6 # save cur_lo in xmm6
|
| # high round
| bl _vpaes_schedule_round
| bdz Lschedule_mangle_last # dec %esi
| bl _vpaes_schedule_mangle
|
| # low round. swap xmm7 and xmm6
| ?vspltw v0, v0, 3 # vpshufd \$0xFF, %xmm0, %xmm0
| vmr v5, v7 # vmovdqa %xmm7, %xmm5
| vmr v7, v6 # vmovdqa %xmm6, %xmm7
| bl _vpaes_schedule_low_round
| vmr v7, v5 # vmovdqa %xmm5, %xmm7
|
| b Loop_schedule_256
| ##
| ## .aes_schedule_mangle_last
| ##
| ## Mangler for last round of key schedule
| ## Mangles %xmm0
| ## when encrypting, outputs out(%xmm0) ^ 63
| ## when decrypting, outputs unskew(%xmm0)
| ##
| ## Always called right before return... jumps to cleanup and exits
| ##
| .align 4
| Lschedule_mangle_last:
| # schedule last round key from xmm0
| li r11, 0x2e0 # lea .Lk_deskew(%rip),%r11
| li r9, 0x2f0
| bne $dir, Lschedule_mangle_last_dec
|
| # encrypting
| lvx v1, r8, r10 # vmovdqa (%r8,%r10),%xmm1
| li r11, 0x2c0 # lea .Lk_opt(%rip), %r11 # prepare to output transform
| li r9, 0x2d0 # prepare to output transform
| vperm v0, v0, v0, v1 # vpshufb %xmm1, %xmm0, %xmm0 # output permute
|
| lvx $iptlo, r11, r12 # reload $ipt
| lvx $ipthi, r9, r12
| addi $out, $out, 16 # add \$16, %rdx
| vxor v0, v0, v26 # vpxor .Lk_s63(%rip), %xmm0, %xmm0
| bl _vpaes_schedule_transform # output transform
|
| #stvx v0, r0, $out # vmovdqu %xmm0, (%rdx) # save last key
| vperm v0, v0, v0, $outperm # rotate right/left
| li r10, 4
| vsel v2, $outhead, v0, $outmask
| li r11, 8
| stvx v2, 0, $out
| li r12, 12
| stvewx v0, 0, $out # some (or all) are redundant
| stvewx v0, r10, $out
| stvewx v0, r11, $out
| stvewx v0, r12, $out
| b Lschedule_mangle_done
|
| .align 4
| Lschedule_mangle_last_dec:
| lvx $iptlo, r11, r12 # reload $ipt
| lvx $ipthi, r9, r12
| addi $out, $out, -16 # add \$-16, %rdx
| vxor v0, v0, v26 # vpxor .Lk_s63(%rip), %xmm0, %xmm0
| bl _vpaes_schedule_transform # output transform
|
| #stvx v0, r0, $out # vmovdqu %xmm0, (%rdx) # save last key
| addi r9, $out, -15 # -15 is not typo
| vperm v0, v0, v0, $outperm # rotate right/left
| li r10, 4
| vsel v2, $outhead, v0, $outmask
| li r11, 8
| stvx v2, 0, $out
| li r12, 12
| stvewx v0, 0, r9 # some (or all) are redundant
| stvewx v0, r10, r9
| stvewx v0, r11, r9
| stvewx v0, r12, r9
|
|
| Lschedule_mangle_done:
| mtlr r7
| # cleanup
| vxor v0, v0, v0 # vpxor %xmm0, %xmm0, %xmm0
| vxor v1, v1, v1 # vpxor %xmm1, %xmm1, %xmm1
| vxor v2, v2, v2 # vpxor %xmm2, %xmm2, %xmm2
| vxor v3, v3, v3 # vpxor %xmm3, %xmm3, %xmm3
| vxor v4, v4, v4 # vpxor %xmm4, %xmm4, %xmm4
| vxor v5, v5, v5 # vpxor %xmm5, %xmm5, %xmm5
| vxor v6, v6, v6 # vpxor %xmm6, %xmm6, %xmm6
| vxor v7, v7, v7 # vpxor %xmm7, %xmm7, %xmm7
|
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| ##
| ## .aes_schedule_192_smear
| ##
| ## Smear the short, low side in the 192-bit key schedule.
| ##
| ## Inputs:
| ## %xmm7: high side, b a x y
| ## %xmm6: low side, d c 0 0
| ## %xmm13: 0
| ##
| ## Outputs:
| ## %xmm6: b+c+d b+c 0 0
| ## %xmm0: b+c+d b+c b a
| ##
| .align 4
| _vpaes_schedule_192_smear:
| ?vspltw v0, v7, 3
| ?vsldoi v1, v9, v6, 12 # vpshufd \$0x80, %xmm6, %xmm1 # d c 0 0 -> c 0 0 0
| ?vsldoi v0, v7, v0, 8 # vpshufd \$0xFE, %xmm7, %xmm0 # b a _ _ -> b b b a
| vxor v6, v6, v1 # vpxor %xmm1, %xmm6, %xmm6 # -> c+d c 0 0
| vxor v6, v6, v0 # vpxor %xmm0, %xmm6, %xmm6 # -> b+c+d b+c b a
| vmr v0, v6
| ?vsldoi v6, v6, v9, 8
| ?vsldoi v6, v9, v6, 8 # clobber low side with zeros
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| ##
| ## .aes_schedule_round
| ##
| ## Runs one main round of the key schedule on %xmm0, %xmm7
| ##
| ## Specifically, runs subbytes on the high dword of %xmm0
| ## then rotates it by one byte and xors into the low dword of
| ## %xmm7.
| ##
| ## Adds rcon from low byte of %xmm8, then rotates %xmm8 for
| ## next rcon.
| ##
| ## Smears the dwords of %xmm7 by xoring the low into the
| ## second low, result into third, result into highest.
| ##
| ## Returns results in %xmm7 = %xmm0.
| ## Clobbers %xmm1-%xmm4, %r11.
| ##
| .align 4
| _vpaes_schedule_round:
| # extract rcon from xmm8
| #vxor v4, v4, v4 # vpxor %xmm4, %xmm4, %xmm4
| ?vsldoi v1, $rcon, v9, 15 # vpalignr \$15, %xmm8, %xmm4, %xmm1
| ?vsldoi $rcon, $rcon, $rcon, 15 # vpalignr \$15, %xmm8, %xmm8, %xmm8
| vxor v7, v7, v1 # vpxor %xmm1, %xmm7, %xmm7
|
| # rotate
| ?vspltw v0, v0, 3 # vpshufd \$0xFF, %xmm0, %xmm0
| ?vsldoi v0, v0, v0, 1 # vpalignr \$1, %xmm0, %xmm0, %xmm0
|
| # fall through...
|
| # low round: same as high round, but no rotation and no rcon.
| _vpaes_schedule_low_round:
| # smear xmm7
| ?vsldoi v1, v9, v7, 12 # vpslldq \$4, %xmm7, %xmm1
| vxor v7, v7, v1 # vpxor %xmm1, %xmm7, %xmm7
| vspltisb v1, 0x0f # 0x0f..0f
| ?vsldoi v4, v9, v7, 8 # vpslldq \$8, %xmm7, %xmm4
|
| # subbytes
| vand v1, v1, v0 # vpand %xmm9, %xmm0, %xmm1 # 0 = k
| vsrb v0, v0, v8 # vpsrlb \$4, %xmm0, %xmm0 # 1 = i
| vxor v7, v7, v4 # vpxor %xmm4, %xmm7, %xmm7
| vperm v2, $invhi, v9, v1 # vpshufb %xmm1, %xmm11, %xmm2 # 2 = a/k
| vxor v1, v1, v0 # vpxor %xmm0, %xmm1, %xmm1 # 0 = j
| vperm v3, $invlo, v9, v0 # vpshufb %xmm0, %xmm10, %xmm3 # 3 = 1/i
| vxor v3, v3, v2 # vpxor %xmm2, %xmm3, %xmm3 # 3 = iak = 1/i + a/k
| vperm v4, $invlo, v9, v1 # vpshufb %xmm1, %xmm10, %xmm4 # 4 = 1/j
| vxor v7, v7, v26 # vpxor .Lk_s63(%rip), %xmm7, %xmm7
| vperm v3, $invlo, v9, v3 # vpshufb %xmm3, %xmm10, %xmm3 # 2 = 1/iak
| vxor v4, v4, v2 # vpxor %xmm2, %xmm4, %xmm4 # 4 = jak = 1/j + a/k
| vperm v2, $invlo, v9, v4 # vpshufb %xmm4, %xmm10, %xmm2 # 3 = 1/jak
| vxor v3, v3, v1 # vpxor %xmm1, %xmm3, %xmm3 # 2 = io
| vxor v2, v2, v0 # vpxor %xmm0, %xmm2, %xmm2 # 3 = jo
| vperm v4, v15, v9, v3 # vpshufb %xmm3, %xmm13, %xmm4 # 4 = sbou
| vperm v1, v14, v9, v2 # vpshufb %xmm2, %xmm12, %xmm1 # 0 = sb1t
| vxor v1, v1, v4 # vpxor %xmm4, %xmm1, %xmm1 # 0 = sbox output
|
| # add in smeared stuff
| vxor v0, v1, v7 # vpxor %xmm7, %xmm1, %xmm0
| vxor v7, v1, v7 # vmovdqa %xmm0, %xmm7
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| ##
| ## .aes_schedule_transform
| ##
| ## Linear-transform %xmm0 according to tables at (%r11)
| ##
| ## Requires that %xmm9 = 0x0F0F... as in preheat
| ## Output in %xmm0
| ## Clobbers %xmm2
| ##
| .align 4
| _vpaes_schedule_transform:
| #vand v1, v0, v9 # vpand %xmm9, %xmm0, %xmm1
| vsrb v2, v0, v8 # vpsrlb \$4, %xmm0, %xmm0
| # vmovdqa (%r11), %xmm2 # lo
| vperm v0, $iptlo, $iptlo, v0 # vpshufb %xmm1, %xmm2, %xmm2
| # vmovdqa 16(%r11), %xmm1 # hi
| vperm v2, $ipthi, $ipthi, v2 # vpshufb %xmm0, %xmm1, %xmm0
| vxor v0, v0, v2 # vpxor %xmm2, %xmm0, %xmm0
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| ##
| ## .aes_schedule_mangle
| ##
| ## Mangle xmm0 from (basis-transformed) standard version
| ## to our version.
| ##
| ## On encrypt,
| ## xor with 0x63
| ## multiply by circulant 0,1,1,1
| ## apply shiftrows transform
| ##
| ## On decrypt,
| ## xor with 0x63
| ## multiply by "inverse mixcolumns" circulant E,B,D,9
| ## deskew
| ## apply shiftrows transform
| ##
| ##
| ## Writes out to (%rdx), and increments or decrements it
| ## Keeps track of round number mod 4 in %r8
| ## Preserves xmm0
| ## Clobbers xmm1-xmm5
| ##
| .align 4
| _vpaes_schedule_mangle:
| #vmr v4, v0 # vmovdqa %xmm0, %xmm4 # save xmm0 for later
| # vmovdqa .Lk_mc_forward(%rip),%xmm5
| bne $dir, Lschedule_mangle_dec
|
| # encrypting
| vxor v4, v0, v26 # vpxor .Lk_s63(%rip), %xmm0, %xmm4
| addi $out, $out, 16 # add \$16, %rdx
| vperm v4, v4, v4, v25 # vpshufb %xmm5, %xmm4, %xmm4
| vperm v1, v4, v4, v25 # vpshufb %xmm5, %xmm4, %xmm1
| vperm v3, v1, v1, v25 # vpshufb %xmm5, %xmm1, %xmm3
| vxor v4, v4, v1 # vpxor %xmm1, %xmm4, %xmm4
| lvx v1, r8, r10 # vmovdqa (%r8,%r10), %xmm1
| vxor v3, v3, v4 # vpxor %xmm4, %xmm3, %xmm3
|
| vperm v3, v3, v3, v1 # vpshufb %xmm1, %xmm3, %xmm3
| addi r8, r8, -16 # add \$-16, %r8
| andi. r8, r8, 0x30 # and \$0x30, %r8
|
| #stvx v3, 0, $out # vmovdqu %xmm3, (%rdx)
| vperm v1, v3, v3, $outperm # rotate right/left
| vsel v2, $outhead, v1, $outmask
| vmr $outhead, v1
| stvx v2, 0, $out
| blr
|
| .align 4
| Lschedule_mangle_dec:
| # inverse mix columns
| # lea .Lk_dksd(%rip),%r11
| vsrb v1, v0, v8 # vpsrlb \$4, %xmm4, %xmm1 # 1 = hi
| #and v4, v0, v9 # vpand %xmm9, %xmm4, %xmm4 # 4 = lo
|
| # vmovdqa 0x00(%r11), %xmm2
| vperm v2, v16, v16, v0 # vpshufb %xmm4, %xmm2, %xmm2
| # vmovdqa 0x10(%r11), %xmm3
| vperm v3, v17, v17, v1 # vpshufb %xmm1, %xmm3, %xmm3
| vxor v3, v3, v2 # vpxor %xmm2, %xmm3, %xmm3
| vperm v3, v3, v9, v25 # vpshufb %xmm5, %xmm3, %xmm3
|
| # vmovdqa 0x20(%r11), %xmm2
| vperm v2, v18, v18, v0 # vpshufb %xmm4, %xmm2, %xmm2
| vxor v2, v2, v3 # vpxor %xmm3, %xmm2, %xmm2
| # vmovdqa 0x30(%r11), %xmm3
| vperm v3, v19, v19, v1 # vpshufb %xmm1, %xmm3, %xmm3
| vxor v3, v3, v2 # vpxor %xmm2, %xmm3, %xmm3
| vperm v3, v3, v9, v25 # vpshufb %xmm5, %xmm3, %xmm3
|
| # vmovdqa 0x40(%r11), %xmm2
| vperm v2, v20, v20, v0 # vpshufb %xmm4, %xmm2, %xmm2
| vxor v2, v2, v3 # vpxor %xmm3, %xmm2, %xmm2
| # vmovdqa 0x50(%r11), %xmm3
| vperm v3, v21, v21, v1 # vpshufb %xmm1, %xmm3, %xmm3
| vxor v3, v3, v2 # vpxor %xmm2, %xmm3, %xmm3
|
| # vmovdqa 0x60(%r11), %xmm2
| vperm v2, v22, v22, v0 # vpshufb %xmm4, %xmm2, %xmm2
| vperm v3, v3, v9, v25 # vpshufb %xmm5, %xmm3, %xmm3
| # vmovdqa 0x70(%r11), %xmm4
| vperm v4, v23, v23, v1 # vpshufb %xmm1, %xmm4, %xmm4
| lvx v1, r8, r10 # vmovdqa (%r8,%r10), %xmm1
| vxor v2, v2, v3 # vpxor %xmm3, %xmm2, %xmm2
| vxor v3, v4, v2 # vpxor %xmm2, %xmm4, %xmm3
|
| addi $out, $out, -16 # add \$-16, %rdx
|
| vperm v3, v3, v3, v1 # vpshufb %xmm1, %xmm3, %xmm3
| addi r8, r8, -16 # add \$-16, %r8
| andi. r8, r8, 0x30 # and \$0x30, %r8
|
| #stvx v3, 0, $out # vmovdqu %xmm3, (%rdx)
| vperm v1, v3, v3, $outperm # rotate right/left
| vsel v2, $outhead, v1, $outmask
| vmr $outhead, v1
| stvx v2, 0, $out
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
|
| .globl .vpaes_set_encrypt_key
| .align 5
| .vpaes_set_encrypt_key:
| $STU $sp,-$FRAME($sp)
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mflr r0
| mfspr r6, 256 # save vrsave
| stvx v20,r10,$sp
| addi r10,r10,32
| stvx v21,r11,$sp
| addi r11,r11,32
| stvx v22,r10,$sp
| addi r10,r10,32
| stvx v23,r11,$sp
| addi r11,r11,32
| stvx v24,r10,$sp
| addi r10,r10,32
| stvx v25,r11,$sp
| addi r11,r11,32
| stvx v26,r10,$sp
| addi r10,r10,32
| stvx v27,r11,$sp
| addi r11,r11,32
| stvx v28,r10,$sp
| addi r10,r10,32
| stvx v29,r11,$sp
| addi r11,r11,32
| stvx v30,r10,$sp
| stvx v31,r11,$sp
| stw r6,`$FRAME-4`($sp) # save vrsave
| li r7, -1
| $PUSH r0, `$FRAME+$LRSAVE`($sp)
| mtspr 256, r7 # preserve all AltiVec registers
|
| srwi r9, $bits, 5 # shr \$5,%eax
| addi r9, r9, 6 # add \$5,%eax
| stw r9, 240($out) # mov %eax,240(%rdx) # AES_KEY->rounds = nbits/32+5;
|
| cmplw $dir, $bits, $bits # set encrypt direction
| li r8, 0x30 # mov \$0x30,%r8d
| bl _vpaes_schedule_core
|
| $POP r0, `$FRAME+$LRSAVE`($sp)
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mtspr 256, r6 # restore vrsave
| mtlr r0
| xor r3, r3, r3
| lvx v20,r10,$sp
| addi r10,r10,32
| lvx v21,r11,$sp
| addi r11,r11,32
| lvx v22,r10,$sp
| addi r10,r10,32
| lvx v23,r11,$sp
| addi r11,r11,32
| lvx v24,r10,$sp
| addi r10,r10,32
| lvx v25,r11,$sp
| addi r11,r11,32
| lvx v26,r10,$sp
| addi r10,r10,32
| lvx v27,r11,$sp
| addi r11,r11,32
| lvx v28,r10,$sp
| addi r10,r10,32
| lvx v29,r11,$sp
| addi r11,r11,32
| lvx v30,r10,$sp
| lvx v31,r11,$sp
| addi $sp,$sp,$FRAME
| blr
| .long 0
| .byte 0,12,0x04,1,0x80,0,3,0
| .long 0
| .size .vpaes_set_encrypt_key,.-.vpaes_set_encrypt_key
|
| .globl .vpaes_set_decrypt_key
| .align 4
| .vpaes_set_decrypt_key:
| $STU $sp,-$FRAME($sp)
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mflr r0
| mfspr r6, 256 # save vrsave
| stvx v20,r10,$sp
| addi r10,r10,32
| stvx v21,r11,$sp
| addi r11,r11,32
| stvx v22,r10,$sp
| addi r10,r10,32
| stvx v23,r11,$sp
| addi r11,r11,32
| stvx v24,r10,$sp
| addi r10,r10,32
| stvx v25,r11,$sp
| addi r11,r11,32
| stvx v26,r10,$sp
| addi r10,r10,32
| stvx v27,r11,$sp
| addi r11,r11,32
| stvx v28,r10,$sp
| addi r10,r10,32
| stvx v29,r11,$sp
| addi r11,r11,32
| stvx v30,r10,$sp
| stvx v31,r11,$sp
| stw r6,`$FRAME-4`($sp) # save vrsave
| li r7, -1
| $PUSH r0, `$FRAME+$LRSAVE`($sp)
| mtspr 256, r7 # preserve all AltiVec registers
|
| srwi r9, $bits, 5 # shr \$5,%eax
| addi r9, r9, 6 # add \$5,%eax
| stw r9, 240($out) # mov %eax,240(%rdx) # AES_KEY->rounds = nbits/32+5;
|
| slwi r9, r9, 4 # shl \$4,%eax
| add $out, $out, r9 # lea (%rdx,%rax),%rdx
|
| cmplwi $dir, $bits, 0 # set decrypt direction
| srwi r8, $bits, 1 # shr \$1,%r8d
| andi. r8, r8, 32 # and \$32,%r8d
| xori r8, r8, 32 # xor \$32,%r8d # nbits==192?0:32
| bl _vpaes_schedule_core
|
| $POP r0, `$FRAME+$LRSAVE`($sp)
| li r10,`15+6*$SIZE_T`
| li r11,`31+6*$SIZE_T`
| mtspr 256, r6 # restore vrsave
| mtlr r0
| xor r3, r3, r3
| lvx v20,r10,$sp
| addi r10,r10,32
| lvx v21,r11,$sp
| addi r11,r11,32
| lvx v22,r10,$sp
| addi r10,r10,32
| lvx v23,r11,$sp
| addi r11,r11,32
| lvx v24,r10,$sp
| addi r10,r10,32
| lvx v25,r11,$sp
| addi r11,r11,32
| lvx v26,r10,$sp
| addi r10,r10,32
| lvx v27,r11,$sp
| addi r11,r11,32
| lvx v28,r10,$sp
| addi r10,r10,32
| lvx v29,r11,$sp
| addi r11,r11,32
| lvx v30,r10,$sp
| lvx v31,r11,$sp
| addi $sp,$sp,$FRAME
| blr
| .long 0
| .byte 0,12,0x04,1,0x80,0,3,0
| .long 0
| .size .vpaes_set_decrypt_key,.-.vpaes_set_decrypt_key
| ___
| }
|
| my $consts=1;
| foreach (split("\n",$code)) {
| s/\`([^\`]*)\`/eval $1/geo;
|
| # constants table endian-specific conversion
| if ($consts && m/\.long\s+(.+)\s+(\?[a-z]*)$/o) {
| my $conv=$2;
| my @bytes=();
|
| # convert to endian-agnostic format
| foreach (split(/,\s+/,$1)) {
| my $l = /^0/?oct:int;
| push @bytes,($l>>24)&0xff,($l>>16)&0xff,($l>>8)&0xff,$l&0xff;
| }
|
| # little-endian conversion
| if ($flavour =~ /le$/o) {
| SWITCH: for($conv) {
| /\?inv/ && do { @bytes=map($_^0xf,@bytes); last; };
| /\?rev/ && do { @bytes=reverse(@bytes); last; };
| }
| }
|
| #emit
| print ".byte\t",join(',',map (sprintf("0x%02x",$_),@bytes)),"\n";
| next;
| }
| $consts=0 if (m/Lconsts:/o); # end of table
|
| # instructions prefixed with '?' are endian-specific and need
| # to be adjusted accordingly...
| if ($flavour =~ /le$/o) { # little-endian
| s/\?lvsr/lvsl/o or
| s/\?lvsl/lvsr/o or
| s/\?(vperm\s+v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+)/$1$3$2$4/o or
| s/\?(vsldoi\s+v[0-9]+,\s*)(v[0-9]+,)\s*(v[0-9]+,\s*)([0-9]+)/$1$3$2 16-$4/o or
| s/\?(vspltw\s+v[0-9]+,\s*)(v[0-9]+,)\s*([0-9])/$1$2 3-$3/o;
| } else { # big-endian
| s/\?([a-z]+)/$1/o;
| }
|
| print $_,"\n";
| }
|
| close STDOUT or die "error closing STDOUT: $!";
|
|
