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openssl/crypto/engine/eng_padlock.c

Index: openssl/crypto/engine/eng_padlock.c
===================================================================
--- openssl/crypto/engine/eng_padlock.c	(revision 105093)
+++ openssl/crypto/engine/eng_padlock.c	(working copy)
@@ -1,1219 +0,0 @@
-/* 
- * Support for VIA PadLock Advanced Cryptography Engine (ACE)
- * Written by Michal Ludvig <michal@logix.cz>
- *            http://www.logix.cz/michal
- *
- * Big thanks to Andy Polyakov for a help with optimization, 
- * assembler fixes, port to MS Windows and a lot of other 
- * valuable work on this engine!
- */
-
-/* ====================================================================
- * Copyright (c) 1999-2001 The OpenSSL Project.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- *    software must display the following acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-
-#include <stdio.h>
-#include <string.h>
-
-#include <openssl/opensslconf.h>
-#include <openssl/crypto.h>
-#include <openssl/dso.h>
-#include <openssl/engine.h>
-#include <openssl/evp.h>
-#ifndef OPENSSL_NO_AES
-#include <openssl/aes.h>
-#endif
-#include <openssl/rand.h>
-#include <openssl/err.h>
-
-#ifndef OPENSSL_NO_HW
-#ifndef OPENSSL_NO_HW_PADLOCK
-
-/* Attempt to have a single source for both 0.9.7 and 0.9.8 :-) */
-#if (OPENSSL_VERSION_NUMBER >= 0x00908000L)
-#  ifndef OPENSSL_NO_DYNAMIC_ENGINE
-#    define DYNAMIC_ENGINE
-#  endif
-#elif (OPENSSL_VERSION_NUMBER >= 0x00907000L)
-#  ifdef ENGINE_DYNAMIC_SUPPORT
-#    define DYNAMIC_ENGINE
-#  endif
-#else
-#  error "Only OpenSSL >= 0.9.7 is supported"
-#endif
-
-/* VIA PadLock AES is available *ONLY* on some x86 CPUs.
-   Not only that it doesn't exist elsewhere, but it
-   even can't be compiled on other platforms!
- 
-   In addition, because of the heavy use of inline assembler,
-   compiler choice is limited to GCC and Microsoft C. */
-#undef COMPILE_HW_PADLOCK
-#if !defined(I386_ONLY) && !defined(OPENSSL_NO_INLINE_ASM)
-# if (defined(__GNUC__) && (defined(__i386__) || defined(__i386))) || \
-     (defined(_MSC_VER) && defined(_M_IX86))
-#  define COMPILE_HW_PADLOCK
-static ENGINE *ENGINE_padlock (void);
-# endif
-#endif
-
-void ENGINE_load_padlock (void)
-{
-/* On non-x86 CPUs it just returns. */
-#ifdef COMPILE_HW_PADLOCK
-	ENGINE *toadd = ENGINE_padlock ();
-	if (!toadd) return;
-	ENGINE_add (toadd);
-	ENGINE_free (toadd);
-	ERR_clear_error ();
-#endif
-}
-
-#ifdef COMPILE_HW_PADLOCK
-/* We do these includes here to avoid header problems on platforms that
-   do not have the VIA padlock anyway... */
-#ifdef _MSC_VER
-# include <malloc.h>
-# define alloca _alloca
-#elif defined(NETWARE_CLIB) && defined(__GNUC__)
-  void *alloca(size_t);
-# define alloca(s) __builtin_alloca(s)
-#else
-# include <stdlib.h>
-#endif
-
-/* Function for ENGINE detection and control */
-static int padlock_available(void);
-static int padlock_init(ENGINE *e);
-
-/* RNG Stuff */
-static RAND_METHOD padlock_rand;
-
-/* Cipher Stuff */
-#ifndef OPENSSL_NO_AES
-static int padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid);
-#endif
-
-/* Engine names */
-static const char *padlock_id = "padlock";
-static char padlock_name[100];
-
-/* Available features */
-static int padlock_use_ace = 0;	/* Advanced Cryptography Engine */
-static int padlock_use_rng = 0;	/* Random Number Generator */
-#ifndef OPENSSL_NO_AES
-static int padlock_aes_align_required = 1;
-#endif
-
-/* ===== Engine "management" functions ===== */
-
-/* Prepare the ENGINE structure for registration */
-static int
-padlock_bind_helper(ENGINE *e)
-{
-	/* Check available features */
-	padlock_available();
-
-#if 1	/* disable RNG for now, see commentary in vicinity of RNG code */
-	padlock_use_rng=0;
-#endif
-
-	/* Generate a nice engine name with available features */
-	BIO_snprintf(padlock_name, sizeof(padlock_name),
-		"VIA PadLock (%s, %s)", 
-		 padlock_use_rng ? "RNG" : "no-RNG",
-		 padlock_use_ace ? "ACE" : "no-ACE");
-
-	/* Register everything or return with an error */ 
-	if (!ENGINE_set_id(e, padlock_id) ||
-	    !ENGINE_set_name(e, padlock_name) ||
-
-	    !ENGINE_set_init_function(e, padlock_init) ||
-#ifndef OPENSSL_NO_AES
-	    (padlock_use_ace && !ENGINE_set_ciphers (e, padlock_ciphers)) ||
-#endif
-	    (padlock_use_rng && !ENGINE_set_RAND (e, &padlock_rand))) {
-		return 0;
-	}
-
-	/* Everything looks good */
-	return 1;
-}
-
-/* Constructor */
-static ENGINE *
-ENGINE_padlock(void)
-{
-	ENGINE *eng = ENGINE_new();
-
-	if (!eng) {
-		return NULL;
-	}
-
-	if (!padlock_bind_helper(eng)) {
-		ENGINE_free(eng);
-		return NULL;
-	}
-
-	return eng;
-}
-
-/* Check availability of the engine */
-static int
-padlock_init(ENGINE *e)
-{
-	return (padlock_use_rng || padlock_use_ace);
-}
-
-/* This stuff is needed if this ENGINE is being compiled into a self-contained
- * shared-library.
- */
-#ifdef DYNAMIC_ENGINE
-static int
-padlock_bind_fn(ENGINE *e, const char *id)
-{
-	if (id && (strcmp(id, padlock_id) != 0)) {
-		return 0;
-	}
-
-	if (!padlock_bind_helper(e))  {
-		return 0;
-	}
-
-	return 1;
-}
-
-IMPLEMENT_DYNAMIC_CHECK_FN ()
-IMPLEMENT_DYNAMIC_BIND_FN (padlock_bind_fn)
-#endif /* DYNAMIC_ENGINE */
-
-/* ===== Here comes the "real" engine ===== */
-
-#ifndef OPENSSL_NO_AES
-/* Some AES-related constants */
-#define AES_BLOCK_SIZE		16
-#define AES_KEY_SIZE_128	16
-#define AES_KEY_SIZE_192	24
-#define AES_KEY_SIZE_256	32
-
-/* Here we store the status information relevant to the 
-   current context. */
-/* BIG FAT WARNING:
- * 	Inline assembler in PADLOCK_XCRYPT_ASM()
- * 	depends on the order of items in this structure.
- * 	Don't blindly modify, reorder, etc!
- */
-struct padlock_cipher_data
-{
-	unsigned char iv[AES_BLOCK_SIZE];	/* Initialization vector */
-	union {	unsigned int pad[4];
-		struct {
-			int rounds:4;
-			int dgst:1;	/* n/a in C3 */
-			int align:1;	/* n/a in C3 */
-			int ciphr:1;	/* n/a in C3 */
-			unsigned int keygen:1;
-			int interm:1;
-			unsigned int encdec:1;
-			int ksize:2;
-		} b;
-	} cword;		/* Control word */
-	AES_KEY ks;		/* Encryption key */
-};
-
-/*
- * 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 single-CPU system],
- * so we accept the penatly...
- */
-static volatile struct padlock_cipher_data *padlock_saved_context;
-#endif
-
-/*
- * =======================================================
- * Inline assembler section(s).
- * =======================================================
- * Order of arguments is chosen to facilitate Windows port
- * using __fastcall calling convention. If you wish to add
- * more routines, keep in mind that first __fastcall
- * argument is passed in %ecx and second - in %edx.
- * =======================================================
- */
-#if defined(__GNUC__) && __GNUC__>=2
-/*
- * As for excessive "push %ebx"/"pop %ebx" found all over.
- * When generating position-independent code GCC won't let
- * us use "b" in assembler templates nor even respect "ebx"
- * in "clobber description." Therefore the trouble...
- */
-
-/* Helper function - check if a CPUID instruction
-   is available on this CPU */
-static int
-padlock_insn_cpuid_available(void)
-{
-	int result = -1;
-
-	/* We're checking if the bit #21 of EFLAGS 
-	   can be toggled. If yes = CPUID is available. */
-	asm volatile (
-		"pushf\n"
-		"popl %%eax\n"
-		"xorl $0x200000, %%eax\n"
-		"movl %%eax, %%ecx\n"
-		"andl $0x200000, %%ecx\n"
-		"pushl %%eax\n"
-		"popf\n"
-		"pushf\n"
-		"popl %%eax\n"
-		"andl $0x200000, %%eax\n"
-		"xorl %%eax, %%ecx\n"
-		"movl %%ecx, %0\n"
-		: "=r" (result) : : "eax", "ecx");
-	
-	return (result == 0);
-}
-
-/* Load supported features of the CPU to see if
-   the PadLock is available. */
-static int
-padlock_available(void)
-{
-	char vendor_string[16];
-	unsigned int eax, edx;
-
-	/* First check if the CPUID instruction is available at all... */
-	if (! padlock_insn_cpuid_available())
-		return 0;
-
-	/* Are we running on the Centaur (VIA) CPU? */
-	eax = 0x00000000;
-	vendor_string[12] = 0;
-	asm volatile (
-		"pushl	%%ebx\n"
-		"cpuid\n"
-		"movl	%%ebx,(%%edi)\n"
-		"movl	%%edx,4(%%edi)\n"
-		"movl	%%ecx,8(%%edi)\n"
-		"popl	%%ebx"
-		: "+a"(eax) : "D"(vendor_string) : "ecx", "edx");
-	if (strcmp(vendor_string, "CentaurHauls") != 0)
-		return 0;
-
-	/* Check for Centaur Extended Feature Flags presence */
-	eax = 0xC0000000;
-	asm volatile ("pushl %%ebx; cpuid; popl	%%ebx"
-		: "+a"(eax) : : "ecx", "edx");
-	if (eax < 0xC0000001)
-		return 0;
-
-	/* Read the Centaur Extended Feature Flags */
-	eax = 0xC0000001;
-	asm volatile ("pushl %%ebx; cpuid; popl %%ebx"
-		: "+a"(eax), "=d"(edx) : : "ecx");
-
-	/* Fill up some flags */
-	padlock_use_ace = ((edx & (0x3<<6)) == (0x3<<6));
-	padlock_use_rng = ((edx & (0x3<<2)) == (0x3<<2));
-
-	return padlock_use_ace + padlock_use_rng;
-}
-
-#ifndef OPENSSL_NO_AES
-/* Our own htonl()/ntohl() */
-static inline void
-padlock_bswapl(AES_KEY *ks)
-{
-	size_t i = sizeof(ks->rd_key)/sizeof(ks->rd_key[0]);
-	unsigned int *key = ks->rd_key;
-
-	while (i--) {
-		asm volatile ("bswapl %0" : "+r"(*key));
-		key++;
-	}
-}
-#endif
-
-/* Force key reload from memory to the CPU microcode.
-   Loading EFLAGS from the stack clears EFLAGS[30] 
-   which does the trick. */
-static inline void
-padlock_reload_key(void)
-{
-	asm volatile ("pushfl; popfl");
-}
-
-#ifndef OPENSSL_NO_AES
-/*
- * 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 cdata,
- * our key *shall* be reloaded upon thread context switch
- * and we are therefore set in either case...
- */
-static inline void
-padlock_verify_context(struct padlock_cipher_data *cdata)
-{
-	asm volatile (
-	"pushfl\n"
-"	btl	$30,(%%esp)\n"
-"	jnc	1f\n"
-"	cmpl	%2,%1\n"
-"	je	1f\n"
-"	popfl\n"
-"	subl	$4,%%esp\n"
-"1:	addl	$4,%%esp\n"
-"	movl	%2,%0"
-	:"+m"(padlock_saved_context)
-	: "r"(padlock_saved_context), "r"(cdata) : "cc");
-}
-
-/* Template for padlock_xcrypt_* modes */
-/* BIG FAT WARNING: 
- * 	The offsets used with 'leal' instructions
- * 	describe items of the 'padlock_cipher_data'
- * 	structure.
- */
-#define PADLOCK_XCRYPT_ASM(name,rep_xcrypt)	\
-static inline void *name(size_t cnt,		\
-	struct padlock_cipher_data *cdata,	\
-	void *out, const void *inp) 		\
-{	void *iv; 				\
-	asm volatile ( "pushl	%%ebx\n"	\
-		"	leal	16(%0),%%edx\n"	\
-		"	leal	32(%0),%%ebx\n"	\
-			rep_xcrypt "\n"		\
-		"	popl	%%ebx"		\
-		: "=a"(iv), "=c"(cnt), "=D"(out), "=S"(inp) \
-		: "0"(cdata), "1"(cnt), "2"(out), "3"(inp)  \
-		: "edx", "cc", "memory");	\
-	return iv;				\
-}
-
-/* Generate all functions with appropriate opcodes */
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_ecb, ".byte 0xf3,0x0f,0xa7,0xc8")	/* rep xcryptecb */
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_cbc, ".byte 0xf3,0x0f,0xa7,0xd0")	/* rep xcryptcbc */
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_cfb, ".byte 0xf3,0x0f,0xa7,0xe0")	/* rep xcryptcfb */
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_ofb, ".byte 0xf3,0x0f,0xa7,0xe8")	/* rep xcryptofb */
-#endif
-
-/* The RNG call itself */
-static inline unsigned int
-padlock_xstore(void *addr, unsigned int edx_in)
-{
-	unsigned int eax_out;
-
-	asm volatile (".byte 0x0f,0xa7,0xc0"	/* xstore */
-	    : "=a"(eax_out),"=m"(*(unsigned *)addr)
-	    : "D"(addr), "d" (edx_in)
-	    );
-
-	return eax_out;
-}
-
-/* Why not inline 'rep movsd'? I failed to find information on what
- * value in Direction Flag one can expect and consequently have to
- * apply "better-safe-than-sorry" approach and assume "undefined."
- * I could explicitly clear it and restore the original value upon
- * return from padlock_aes_cipher, but it's presumably too much
- * trouble for too little gain...
- *
- * In case you wonder 'rep xcrypt*' instructions above are *not*
- * affected by the Direction Flag and pointers advance toward
- * larger addresses unconditionally.
- */ 
-static inline unsigned char *
-padlock_memcpy(void *dst,const void *src,size_t n)
-{
-	long       *d=dst;
-	const long *s=src;
-
-	n /= sizeof(*d);
-	do { *d++ = *s++; } while (--n);
-
-	return dst;
-}
-
-#elif defined(_MSC_VER)
-/*
- * Unlike GCC these are real functions. In order to minimize impact
- * on performance we adhere to __fastcall calling convention in
- * order to get two first arguments passed through %ecx and %edx.
- * Which kind of suits very well, as instructions in question use
- * both %ecx and %edx as input:-)
- */
-#define REP_XCRYPT(code)		\
-	_asm _emit 0xf3			\
-	_asm _emit 0x0f _asm _emit 0xa7	\
-	_asm _emit code
-
-/* BIG FAT WARNING: 
- * 	The offsets used with 'lea' instructions
- * 	describe items of the 'padlock_cipher_data'
- * 	structure.
- */
-#define PADLOCK_XCRYPT_ASM(name,code)	\
-static void * __fastcall 		\
-	name (size_t cnt, void *cdata,	\
-	void *outp, const void *inp)	\
-{	_asm	mov	eax,edx		\
-	_asm	lea	edx,[eax+16]	\
-	_asm	lea	ebx,[eax+32]	\
-	_asm	mov	edi,outp	\
-	_asm	mov	esi,inp		\
-	REP_XCRYPT(code)		\
-}
-
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_ecb,0xc8)
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_cbc,0xd0)
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_cfb,0xe0)
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_ofb,0xe8)
-
-static int __fastcall
-padlock_xstore(void *outp,unsigned int code)
-{	_asm	mov	edi,ecx
-	_asm _emit 0x0f _asm _emit 0xa7 _asm _emit 0xc0
-}
-
-static void __fastcall
-padlock_reload_key(void)
-{	_asm pushfd _asm popfd		}
-
-static void __fastcall
-padlock_verify_context(void *cdata)
-{	_asm	{
-		pushfd
-		bt	DWORD PTR[esp],30
-		jnc	skip
-		cmp	ecx,padlock_saved_context
-		je	skip
-		popfd
-		sub	esp,4
-	skip:	add	esp,4
-		mov	padlock_saved_context,ecx
-		}
-}
-
-static int
-padlock_available(void)
-{	_asm	{
-		pushfd
-		pop	eax
-		mov	ecx,eax
-		xor	eax,1<<21
-		push	eax
-		popfd
-		pushfd
-		pop	eax
-		xor	eax,ecx
-		bt	eax,21
-		jnc	noluck
-		mov	eax,0
-		cpuid
-		xor	eax,eax
-		cmp	ebx,'tneC'
-		jne	noluck
-		cmp	edx,'Hrua'
-		jne	noluck
-		cmp	ecx,'slua'
-		jne	noluck
-		mov	eax,0xC0000000
-		cpuid
-		mov	edx,eax
-		xor	eax,eax
-		cmp	edx,0xC0000001
-		jb	noluck
-		mov	eax,0xC0000001
-		cpuid
-		xor	eax,eax
-		bt	edx,6
-		jnc	skip_a
-		bt	edx,7
-		jnc	skip_a
-		mov	padlock_use_ace,1
-		inc	eax
-	skip_a:	bt	edx,2
-		jnc	skip_r
-		bt	edx,3
-		jnc	skip_r
-		mov	padlock_use_rng,1
-		inc	eax
-	skip_r:
-	noluck:
-		}
-}
-
-static void __fastcall
-padlock_bswapl(void *key)
-{	_asm	{
-		pushfd
-		cld
-		mov	esi,ecx
-		mov	edi,ecx
-		mov	ecx,60
-	up:	lodsd
-		bswap	eax
-		stosd
-		loop	up
-		popfd
-		}
-}
-
-/* MS actually specifies status of Direction Flag and compiler even
- * manages to compile following as 'rep movsd' all by itself...
- */
-#define padlock_memcpy(o,i,n) ((unsigned char *)memcpy((o),(i),(n)&~3U))
-#endif
-
-/* ===== AES encryption/decryption ===== */
-#ifndef OPENSSL_NO_AES
-
-#if defined(NID_aes_128_cfb128) && ! defined (NID_aes_128_cfb)
-#define NID_aes_128_cfb	NID_aes_128_cfb128
-#endif
-
-#if defined(NID_aes_128_ofb128) && ! defined (NID_aes_128_ofb)
-#define NID_aes_128_ofb	NID_aes_128_ofb128
-#endif
-
-#if defined(NID_aes_192_cfb128) && ! defined (NID_aes_192_cfb)
-#define NID_aes_192_cfb	NID_aes_192_cfb128
-#endif
-
-#if defined(NID_aes_192_ofb128) && ! defined (NID_aes_192_ofb)
-#define NID_aes_192_ofb	NID_aes_192_ofb128
-#endif
-
-#if defined(NID_aes_256_cfb128) && ! defined (NID_aes_256_cfb)
-#define NID_aes_256_cfb	NID_aes_256_cfb128
-#endif
-
-#if defined(NID_aes_256_ofb128) && ! defined (NID_aes_256_ofb)
-#define NID_aes_256_ofb	NID_aes_256_ofb128
-#endif
-
-/* List of supported ciphers. */
-static int padlock_cipher_nids[] = {
-	NID_aes_128_ecb,
-	NID_aes_128_cbc,
-	NID_aes_128_cfb,
-	NID_aes_128_ofb,
-
-	NID_aes_192_ecb,
-	NID_aes_192_cbc,
-	NID_aes_192_cfb,
-	NID_aes_192_ofb,
-
-	NID_aes_256_ecb,
-	NID_aes_256_cbc,
-	NID_aes_256_cfb,
-	NID_aes_256_ofb,
-};
-static int padlock_cipher_nids_num = (sizeof(padlock_cipher_nids)/
-				      sizeof(padlock_cipher_nids[0]));
-
-/* Function prototypes ... */
-static int padlock_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
-				const unsigned char *iv, int enc);
-static int padlock_aes_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			      const unsigned char *in, size_t nbytes);
-
-#define NEAREST_ALIGNED(ptr) ( (unsigned char *)(ptr) +		\
-	( (0x10 - ((size_t)(ptr) & 0x0F)) & 0x0F )	)
-#define ALIGNED_CIPHER_DATA(ctx) ((struct padlock_cipher_data *)\
-	NEAREST_ALIGNED(ctx->cipher_data))
-
-#define EVP_CIPHER_block_size_ECB	AES_BLOCK_SIZE
-#define EVP_CIPHER_block_size_CBC	AES_BLOCK_SIZE
-#define EVP_CIPHER_block_size_OFB	1
-#define EVP_CIPHER_block_size_CFB	1
-
-/* Declaring so many ciphers by hand would be a pain.
-   Instead introduce a bit of preprocessor magic :-) */
-#define	DECLARE_AES_EVP(ksize,lmode,umode)	\
-static const EVP_CIPHER padlock_aes_##ksize##_##lmode = {	\
-	NID_aes_##ksize##_##lmode,		\
-	EVP_CIPHER_block_size_##umode,	\
-	AES_KEY_SIZE_##ksize,		\
-	AES_BLOCK_SIZE,			\
-	0 | EVP_CIPH_##umode##_MODE,	\
-	padlock_aes_init_key,		\
-	padlock_aes_cipher,		\
-	NULL,				\
-	sizeof(struct padlock_cipher_data) + 16,	\
-	EVP_CIPHER_set_asn1_iv,		\
-	EVP_CIPHER_get_asn1_iv,		\
-	NULL,				\
-	NULL				\
-}
-
-DECLARE_AES_EVP(128,ecb,ECB);
-DECLARE_AES_EVP(128,cbc,CBC);
-DECLARE_AES_EVP(128,cfb,CFB);
-DECLARE_AES_EVP(128,ofb,OFB);
-
-DECLARE_AES_EVP(192,ecb,ECB);
-DECLARE_AES_EVP(192,cbc,CBC);
-DECLARE_AES_EVP(192,cfb,CFB);
-DECLARE_AES_EVP(192,ofb,OFB);
-
-DECLARE_AES_EVP(256,ecb,ECB);
-DECLARE_AES_EVP(256,cbc,CBC);
-DECLARE_AES_EVP(256,cfb,CFB);
-DECLARE_AES_EVP(256,ofb,OFB);
-
-static int
-padlock_ciphers (ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid)
-{
-	/* No specific cipher => return a list of supported nids ... */
-	if (!cipher) {
-		*nids = padlock_cipher_nids;
-		return padlock_cipher_nids_num;
-	}
-
-	/* ... or the requested "cipher" otherwise */
-	switch (nid) {
-	  case NID_aes_128_ecb:
-	    *cipher = &padlock_aes_128_ecb;
-	    break;
-	  case NID_aes_128_cbc:
-	    *cipher = &padlock_aes_128_cbc;
-	    break;
-	  case NID_aes_128_cfb:
-	    *cipher = &padlock_aes_128_cfb;
-	    break;
-	  case NID_aes_128_ofb:
-	    *cipher = &padlock_aes_128_ofb;
-	    break;
-
-	  case NID_aes_192_ecb:
-	    *cipher = &padlock_aes_192_ecb;
-	    break;
-	  case NID_aes_192_cbc:
-	    *cipher = &padlock_aes_192_cbc;
-	    break;
-	  case NID_aes_192_cfb:
-	    *cipher = &padlock_aes_192_cfb;
-	    break;
-	  case NID_aes_192_ofb:
-	    *cipher = &padlock_aes_192_ofb;
-	    break;
-
-	  case NID_aes_256_ecb:
-	    *cipher = &padlock_aes_256_ecb;
-	    break;
-	  case NID_aes_256_cbc:
-	    *cipher = &padlock_aes_256_cbc;
-	    break;
-	  case NID_aes_256_cfb:
-	    *cipher = &padlock_aes_256_cfb;
-	    break;
-	  case NID_aes_256_ofb:
-	    *cipher = &padlock_aes_256_ofb;
-	    break;
-
-	  default:
-	    /* Sorry, we don't support this NID */
-	    *cipher = NULL;
-	    return 0;
-	}
-
-	return 1;
-}
-
-/* Prepare the encryption key for PadLock usage */
-static int
-padlock_aes_init_key (EVP_CIPHER_CTX *ctx, const unsigned char *key,
-		      const unsigned char *iv, int enc)
-{
-	struct padlock_cipher_data *cdata;
-	int key_len = EVP_CIPHER_CTX_key_length(ctx) * 8;
-
-	if (key==NULL) return 0;	/* ERROR */
-
-	cdata = ALIGNED_CIPHER_DATA(ctx);
-	memset(cdata, 0, sizeof(struct padlock_cipher_data));
-
-	/* Prepare Control word. */
-	if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE)
-		cdata->cword.b.encdec = 0;
-	else
-		cdata->cword.b.encdec = (ctx->encrypt == 0);
-	cdata->cword.b.rounds = 10 + (key_len - 128) / 32;
-	cdata->cword.b.ksize = (key_len - 128) / 64;
-
-	switch(key_len) {
-		case 128:
-			/* PadLock can generate an extended key for
-			   AES128 in hardware */
-			memcpy(cdata->ks.rd_key, key, AES_KEY_SIZE_128);
-			cdata->cword.b.keygen = 0;
-			break;
-
-		case 192:
-		case 256:
-			/* Generate an extended AES key in software.
-			   Needed for AES192/AES256 */
-			/* Well, the above applies to Stepping 8 CPUs
-			   and is listed as hardware errata. They most
-			   likely will fix it at some point and then
-			   a check for stepping would be due here. */
-			if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE ||
-			    EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE ||
-			    enc)
-				AES_set_encrypt_key(key, key_len, &cdata->ks);
-			else
-				AES_set_decrypt_key(key, key_len, &cdata->ks);
-#ifndef AES_ASM
-			/* OpenSSL C functions use byte-swapped extended key. */
-			padlock_bswapl(&cdata->ks);
-#endif
-			cdata->cword.b.keygen = 1;
-			break;
-
-		default:
-			/* ERROR */
-			return 0;
-	}
-
-	/*
-	 * This is done to cover for cases when user reuses the
-	 * context for new key. The catch is that if we don't do
-	 * this, padlock_eas_cipher might proceed with old key...
-	 */
-	padlock_reload_key ();
-
-	return 1;
-}
-
-/* 
- * Simplified version of padlock_aes_cipher() used when
- * 1) both input and output buffers are at aligned addresses.
- * or when
- * 2) running on a newer CPU that doesn't require aligned buffers.
- */
-static int
-padlock_aes_cipher_omnivorous(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
-		const unsigned char *in_arg, size_t nbytes)
-{
-	struct padlock_cipher_data *cdata;
-	void  *iv;
-
-	cdata = ALIGNED_CIPHER_DATA(ctx);
-	padlock_verify_context(cdata);
-
-	switch (EVP_CIPHER_CTX_mode(ctx)) {
-	case EVP_CIPH_ECB_MODE:
-		padlock_xcrypt_ecb(nbytes/AES_BLOCK_SIZE, cdata, out_arg, in_arg);
-		break;
-
-	case EVP_CIPH_CBC_MODE:
-		memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
-		iv = padlock_xcrypt_cbc(nbytes/AES_BLOCK_SIZE, cdata, out_arg, in_arg);
-		memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
-		break;
-
-	case EVP_CIPH_CFB_MODE:
-		memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
-		iv = padlock_xcrypt_cfb(nbytes/AES_BLOCK_SIZE, cdata, out_arg, in_arg);
-		memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
-		break;
-
-	case EVP_CIPH_OFB_MODE:
-		memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
-		padlock_xcrypt_ofb(nbytes/AES_BLOCK_SIZE, cdata, out_arg, in_arg);
-		memcpy(ctx->iv, cdata->iv, AES_BLOCK_SIZE);
-		break;
-
-	default:
-		return 0;
-	}
-
-	memset(cdata->iv, 0, AES_BLOCK_SIZE);
-
-	return 1;
-}
-
-#ifndef  PADLOCK_CHUNK
-# define PADLOCK_CHUNK	512	/* Must be a power of 2 larger than 16 */
-#endif
-#if PADLOCK_CHUNK<16 || PADLOCK_CHUNK&(PADLOCK_CHUNK-1)
-# error "insane PADLOCK_CHUNK..."
-#endif
-
-/* Re-align the arguments to 16-Bytes boundaries and run the 
-   encryption function itself. This function is not AES-specific. */
-static int
-padlock_aes_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
-		   const unsigned char *in_arg, size_t nbytes)
-{
-	struct padlock_cipher_data *cdata;
-	const  void *inp;
-	unsigned char  *out;
-	void  *iv;
-	int    inp_misaligned, out_misaligned, realign_in_loop;
-	size_t chunk, allocated=0;
-
-	/* ctx->num is maintained in byte-oriented modes,
-	   such as CFB and OFB... */
-	if ((chunk = ctx->num)) { /* borrow chunk variable */
-		unsigned char *ivp=ctx->iv;
-
-		switch (EVP_CIPHER_CTX_mode(ctx)) {
-		case EVP_CIPH_CFB_MODE:
-			if (chunk >= AES_BLOCK_SIZE)
-				return 0; /* bogus value */
-
-			if (ctx->encrypt)
-				while (chunk<AES_BLOCK_SIZE && nbytes!=0) {
-					ivp[chunk] = *(out_arg++) = *(in_arg++) ^ ivp[chunk];
-					chunk++, nbytes--;
-				}
-			else	while (chunk<AES_BLOCK_SIZE && nbytes!=0) {
-					unsigned char c = *(in_arg++);
-					*(out_arg++) = c ^ ivp[chunk];
-					ivp[chunk++] = c, nbytes--;
-				}
-
-			ctx->num = chunk%AES_BLOCK_SIZE;
-			break;
-		case EVP_CIPH_OFB_MODE:
-			if (chunk >= AES_BLOCK_SIZE)
-				return 0; /* bogus value */
-
-			while (chunk<AES_BLOCK_SIZE && nbytes!=0) {
-				*(out_arg++) = *(in_arg++) ^ ivp[chunk];
-				chunk++, nbytes--;
-			}
-
-			ctx->num = chunk%AES_BLOCK_SIZE;
-			break;
-		}
-	}
-
-	if (nbytes == 0)
-		return 1;
-#if 0
-	if (nbytes % AES_BLOCK_SIZE)
-		return 0; /* are we expected to do tail processing? */
-#else
-	/* nbytes is always multiple of AES_BLOCK_SIZE in ECB and CBC
-	   modes and arbitrary value in byte-oriented modes, such as
-	   CFB and OFB... */
-#endif
-
-	/* VIA promises CPUs that won't require alignment in the future.
-	   For now padlock_aes_align_required is initialized to 1 and
-	   the condition is never met... */
-	/* C7 core is capable to manage unaligned input in non-ECB[!]
-	   mode, but performance penalties appear to be approximately
-	   same as for software alignment below or ~3x. They promise to
-	   improve it in the future, but for now we can just as well
-	   pretend that it can only handle aligned input... */
-	if (!padlock_aes_align_required && (nbytes%AES_BLOCK_SIZE)==0)
-		return padlock_aes_cipher_omnivorous(ctx, out_arg, in_arg, nbytes);
-
-	inp_misaligned = (((size_t)in_arg) & 0x0F);
-	out_misaligned = (((size_t)out_arg) & 0x0F);
-
-	/* Note that even if output is aligned and input not,
-	 * I still prefer to loop instead of copy the whole
-	 * input and then encrypt in one stroke. This is done
-	 * in order to improve L1 cache utilization... */
-	realign_in_loop = out_misaligned|inp_misaligned;
-
-	if (!realign_in_loop && (nbytes%AES_BLOCK_SIZE)==0)
-		return padlock_aes_cipher_omnivorous(ctx, out_arg, in_arg, nbytes);
-
-	/* this takes one "if" out of the loops */
-	chunk  = nbytes;
-	chunk %= PADLOCK_CHUNK;
-	if (chunk==0) chunk = PADLOCK_CHUNK;
-
-	if (out_misaligned) {
-		/* optmize for small input */
-		allocated = (chunk<nbytes?PADLOCK_CHUNK:nbytes);
-		out = alloca(0x10 + allocated);
-		out = NEAREST_ALIGNED(out);
-	}
-	else
-		out = out_arg;
-
-	cdata = ALIGNED_CIPHER_DATA(ctx);
-	padlock_verify_context(cdata);
-
-	switch (EVP_CIPHER_CTX_mode(ctx)) {
-	case EVP_CIPH_ECB_MODE:
-		do	{
-			if (inp_misaligned)
-				inp = padlock_memcpy(out, in_arg, chunk);
-			else
-				inp = in_arg;
-			in_arg += chunk;
-
-			padlock_xcrypt_ecb(chunk/AES_BLOCK_SIZE, cdata, out, inp);
-
-			if (out_misaligned)
-				out_arg = padlock_memcpy(out_arg, out, chunk) + chunk;
-			else
-				out     = out_arg+=chunk;
-
-			nbytes -= chunk;
-			chunk   = PADLOCK_CHUNK;
-		} while (nbytes);
-		break;
-
-	case EVP_CIPH_CBC_MODE:
-		memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
-		goto cbc_shortcut;
-		do	{
-			if (iv != cdata->iv)
-				memcpy(cdata->iv, iv, AES_BLOCK_SIZE);
-			chunk = PADLOCK_CHUNK;
-		cbc_shortcut: /* optimize for small input */
-			if (inp_misaligned)
-				inp = padlock_memcpy(out, in_arg, chunk);
-			else
-				inp = in_arg;
-			in_arg += chunk;
-
-			iv = padlock_xcrypt_cbc(chunk/AES_BLOCK_SIZE, cdata, out, inp);
-
-			if (out_misaligned)
-				out_arg = padlock_memcpy(out_arg, out, chunk) + chunk;
-			else
-				out     = out_arg+=chunk;
-
-		} while (nbytes -= chunk);
-		memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
-		break;
-
-	case EVP_CIPH_CFB_MODE:
-		memcpy (iv = cdata->iv, ctx->iv, AES_BLOCK_SIZE);
-		chunk &= ~(AES_BLOCK_SIZE-1);
-		if (chunk)	goto cfb_shortcut;
-		else		goto cfb_skiploop;
-		do	{
-			if (iv != cdata->iv)
-				memcpy(cdata->iv, iv, AES_BLOCK_SIZE);
-			chunk = PADLOCK_CHUNK;
-		cfb_shortcut: /* optimize for small input */
-			if (inp_misaligned)
-				inp = padlock_memcpy(out, in_arg, chunk);
-			else
-				inp = in_arg;
-			in_arg += chunk;
-
-			iv = padlock_xcrypt_cfb(chunk/AES_BLOCK_SIZE, cdata, out, inp);
-
-			if (out_misaligned)
-				out_arg = padlock_memcpy(out_arg, out, chunk) + chunk;
-			else
-				out     = out_arg+=chunk;
-
-			nbytes -= chunk;
-		} while (nbytes >= AES_BLOCK_SIZE);
-
-		cfb_skiploop:
-		if (nbytes) {
-			unsigned char *ivp = cdata->iv;
-
-			if (iv != ivp) {
-				memcpy(ivp, iv, AES_BLOCK_SIZE);
-				iv = ivp;
-			}
-			ctx->num = nbytes;
-			if (cdata->cword.b.encdec) {
-				cdata->cword.b.encdec=0;
-				padlock_reload_key();
-				padlock_xcrypt_ecb(1,cdata,ivp,ivp);
-				cdata->cword.b.encdec=1;
-				padlock_reload_key();
-				while(nbytes) {
-					unsigned char c = *(in_arg++);
-					*(out_arg++) = c ^ *ivp;
-					*(ivp++) = c, nbytes--;
-				}
-			}
-			else {	padlock_reload_key();
-				padlock_xcrypt_ecb(1,cdata,ivp,ivp);
-				padlock_reload_key();
-				while (nbytes) {
-					*ivp = *(out_arg++) = *(in_arg++) ^ *ivp;
-					ivp++, nbytes--;
-				}
-			}
-		}
-
-		memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
-		break;
-
-	case EVP_CIPH_OFB_MODE:
-		memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
-		chunk &= ~(AES_BLOCK_SIZE-1);
-		if (chunk) do	{
-			if (inp_misaligned)
-				inp = padlock_memcpy(out, in_arg, chunk);
-			else
-				inp = in_arg;
-			in_arg += chunk;
-
-			padlock_xcrypt_ofb(chunk/AES_BLOCK_SIZE, cdata, out, inp);
-
-			if (out_misaligned)
-				out_arg = padlock_memcpy(out_arg, out, chunk) + chunk;
-			else
-				out     = out_arg+=chunk;
-
-			nbytes -= chunk;
-			chunk   = PADLOCK_CHUNK;
-		} while (nbytes >= AES_BLOCK_SIZE);
-
-		if (nbytes) {
-			unsigned char *ivp = cdata->iv;
-
-			ctx->num = nbytes;
-			padlock_reload_key();	/* empirically found */
-			padlock_xcrypt_ecb(1,cdata,ivp,ivp);
-			padlock_reload_key();	/* empirically found */
-			while (nbytes) {
-				*(out_arg++) = *(in_arg++) ^ *ivp;
-				ivp++, nbytes--;
-			}
-		}
-
-		memcpy(ctx->iv, cdata->iv, AES_BLOCK_SIZE);
-		break;
-
-	default:
-		return 0;
-	}
-
-	/* Clean the realign buffer if it was used */
-	if (out_misaligned) {
-		volatile unsigned long *p=(void *)out;
-		size_t   n = allocated/sizeof(*p);
-		while (n--) *p++=0;
-	}
-
-	memset(cdata->iv, 0, AES_BLOCK_SIZE);
-
-	return 1;
-}
-
-#endif /* OPENSSL_NO_AES */
-
-/* ===== Random Number Generator ===== */
-/*
- * This code is not engaged. The reason is that it does not comply
- * with recommendations for VIA RNG usage for secure applications
- * (posted at http://www.via.com.tw/en/viac3/c3.jsp) nor does it
- * provide meaningful error control...
- */
-/* Wrapper that provides an interface between the API and 
-   the raw PadLock RNG */
-static int
-padlock_rand_bytes(unsigned char *output, int count)
-{
-	unsigned int eax, buf;
-
-	while (count >= 8) {
-		eax = padlock_xstore(output, 0);
-		if (!(eax&(1<<6)))	return 0; /* RNG disabled */
-		/* this ---vv--- covers DC bias, Raw Bits and String Filter */
-		if (eax&(0x1F<<10))	return 0;
-		if ((eax&0x1F)==0)	continue; /* no data, retry... */
-		if ((eax&0x1F)!=8)	return 0; /* fatal failure...  */
-		output += 8;
-		count  -= 8;
-	}
-	while (count > 0) {
-		eax = padlock_xstore(&buf, 3);
-		if (!(eax&(1<<6)))	return 0; /* RNG disabled */
-		/* this ---vv--- covers DC bias, Raw Bits and String Filter */
-		if (eax&(0x1F<<10))	return 0;
-		if ((eax&0x1F)==0)	continue; /* no data, retry... */
-		if ((eax&0x1F)!=1)	return 0; /* fatal failure...  */
-		*output++ = (unsigned char)buf;
-		count--;
-	}
-	*(volatile unsigned int *)&buf=0;
-
-	return 1;
-}
-
-/* Dummy but necessary function */
-static int
-padlock_rand_status(void)
-{
-	return 1;
-}
-
-/* Prepare structure for registration */
-static RAND_METHOD padlock_rand = {
-	NULL,			/* seed */
-	padlock_rand_bytes,	/* bytes */
-	NULL,			/* cleanup */
-	NULL,			/* add */
-	padlock_rand_bytes,	/* pseudorand */
-	padlock_rand_status,	/* rand status */
-};
-
-#endif /* COMPILE_HW_PADLOCK */
-
-#endif /* !OPENSSL_NO_HW_PADLOCK */
-#endif /* !OPENSSL_NO_HW */