crypto/arm_arch.h

/* ====================================================================
 * Copyright (c) 1998-2011 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
 *    openssl-core@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). */

#ifndef OPENSSL_HEADER_ARM_ARCH_H
#define OPENSSL_HEADER_ARM_ARCH_H

#if !defined(__ARM_ARCH__)
# if defined(__CC_ARM)
#  define __ARM_ARCH__ __TARGET_ARCH_ARM
#  if defined(__BIG_ENDIAN)
#   define __ARMEB__
#  else
#   define __ARMEL__
#  endif
# elif defined(__GNUC__)
  /* Why doesn't gcc define __ARM_ARCH__? Instead it defines
   * bunch of below macros. See all_architectires[] table in
   * gcc/config/arm/arm.c. On a side note it defines
   * __ARMEL__/__ARMEB__ for little-/big-endian. */
#  if	defined(__ARM_ARCH_7__)	|| defined(__ARM_ARCH_7A__)	|| \
	defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__)	|| \
	defined(__ARM_ARCH_7EM__)
#   define __ARM_ARCH__ 7
#  elif	defined(__ARM_ARCH_6__)	|| defined(__ARM_ARCH_6J__)	|| \
	defined(__ARM_ARCH_6K__)|| defined(__ARM_ARCH_6M__)	|| \
	defined(__ARM_ARCH_6Z__)|| defined(__ARM_ARCH_6ZK__)	|| \
	defined(__ARM_ARCH_6T2__)
#   define __ARM_ARCH__ 6
#  elif	defined(__ARM_ARCH_5__)	|| defined(__ARM_ARCH_5T__)	|| \
	defined(__ARM_ARCH_5E__)|| defined(__ARM_ARCH_5TE__)	|| \
	defined(__ARM_ARCH_5TEJ__)
#   define __ARM_ARCH__ 5
#  elif	defined(__ARM_ARCH_4__)	|| defined(__ARM_ARCH_4T__)
#   define __ARM_ARCH__ 4
#  else
#   error "unsupported ARM architecture"
#  endif
# endif
#endif

#if !__ASSEMBLER__

/* OPENSSL_armcap_P contains flags describing the capabilities of the CPU and
 * is easy for assembly code to acesss. For C code, see the functions in
 * |cpu.h|. */
extern uint32_t OPENSSL_armcap_P;

/* ARMV7_NEON is true when a NEON unit is present in the current CPU. */
#define ARMV7_NEON (1 << 0)

/* ARMV7_NEON_FUNCTIONAL is true when the NEON unit doesn't contain subtle bugs.
 * The Poly1305 NEON code is known to trigger bugs in the NEON units of some
 * phones. If this bit isn't set then the Poly1305 NEON code won't be used.
 * See https://code.google.com/p/chromium/issues/detail?id=341598. */
#define ARMV7_NEON_FUNCTIONAL (1 << 1)

#endif  /* !__ASSEMBLER__ */


#endif  /* OPENSSL_HEADER_THREAD_H */