diff --git a/cipher/rijndael-padlock.c b/cipher/rijndael-padlock.c index 476772af..234751b9 100644 --- a/cipher/rijndael-padlock.c +++ b/cipher/rijndael-padlock.c @@ -1,102 +1,104 @@ /* Padlock accelerated AES for Libgcrypt * Copyright (C) 2000, 2001, 2002, 2003, 2007, * 2008, 2011, 2012 Free Software Foundation, Inc. * * This file is part of Libgcrypt. * * Libgcrypt is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * Libgcrypt is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see . */ #include #include #include #include /* for memcmp() */ #include "types.h" /* for byte and u32 typedefs */ #include "g10lib.h" #include "cipher.h" #include "bufhelp.h" #include "cipher-selftest.h" #include "rijndael-internal.h" #ifdef USE_PADLOCK /* Encrypt or decrypt one block using the padlock engine. A and B may be the same. */ static unsigned int do_padlock (const RIJNDAEL_context *ctx, unsigned char *bx, const unsigned char *ax, int decrypt_flag) { /* BX and AX are not necessary correctly aligned. Thus we need to copy them here. */ unsigned char a[16] __attribute__ ((aligned (16))); unsigned char b[16] __attribute__ ((aligned (16))); unsigned int cword[4] __attribute__ ((aligned (16))); + unsigned char *pa = a; + unsigned char *pb = b; int blocks; /* The control word fields are: 127:12 11:10 9 8 7 6 5 4 3:0 RESERVED KSIZE CRYPT INTER KEYGN CIPHR ALIGN DGEST ROUND */ cword[0] = (ctx->rounds & 15); /* (The mask is just a safeguard.) */ cword[1] = 0; cword[2] = 0; cword[3] = 0; if (decrypt_flag) cword[0] |= 0x00000200; memcpy (a, ax, 16); blocks = 1; /* Init counter for just one block. */ #ifdef __x86_64__ asm volatile ("pushfq\n\t" /* Force key reload. */ "popfq\n\t" ".byte 0xf3, 0x0f, 0xa7, 0xc8\n\t" /* REP XCRYPT ECB. */ - : /* No output */ - : "S" (a), "D" (b), "d" (cword), "b" (ctx->padlockkey), "c" (blocks) + : "+S" (pa), "+D" (pb), "+c" (blocks) + : "d" (cword), "b" (ctx->padlockkey) : "cc", "memory" ); #else asm volatile ("pushfl\n\t" /* Force key reload. */ "popfl\n\t" - "xchg %3, %%ebx\n\t" /* Load key. */ + "xchg %4, %%ebx\n\t" /* Load key. */ ".byte 0xf3, 0x0f, 0xa7, 0xc8\n\t" /* REP XCRYPT ECB. */ - "xchg %3, %%ebx\n" /* Restore GOT register. */ - : /* No output */ - : "S" (a), "D" (b), "d" (cword), "r" (ctx->padlockkey), "c" (blocks) + "xchg %4, %%ebx\n" /* Restore GOT register. */ + : "+S" (pa), "+D" (pb), "+c" (blocks) + : "d" (cword), "r" (ctx->padlockkey) : "cc", "memory" ); #endif memcpy (bx, b, 16); return (48 + 15 /* possible padding for alignment */); } unsigned int _gcry_aes_padlock_encrypt (const RIJNDAEL_context *ctx, unsigned char *bx, const unsigned char *ax) { return do_padlock(ctx, bx, ax, 0); } unsigned int _gcry_aes_padlock_decrypt (const RIJNDAEL_context *ctx, unsigned char *bx, const unsigned char *ax) { return do_padlock(ctx, bx, ax, 1); } #endif /* USE_PADLOCK */