arm_arch.h

#ifndef __ARM_ARCH_H__
#define __ARM_ARCH_H__

#if !defined(__ARM_ARCH__)
# if defined(__CC_ARM)
#  if __TARGET_ARCH_THUMB
#   define __thumb__
#   if __TARGET_ARCH_THUMB >= 4
#    define __thumb2__
#   endif
#  endif
#  if __TARGET_ARCH_ARM
#   define __ARM_ARCH__ __TARGET_ARCH_ARM
#  else
#   define __ARM_ARCH__ (__TARGET_ARCH_THUMB + 3)
#  endif
#  if defined(__BIG_ENDIAN)
#   define __ARMEB__
#  else
#   define __ARMEL__
#  endif
# elif defined(__GNUC__) || defined(__clang__)
#  if	defined(__aarch64__)
#   define __ARM_ARCH__ 8
#   ifdef __AARCH64EB__
#    define __ARMEB__
#   else
#    define __ARMEL__
#   endif
#  elif defined(__ARM_ARCH)
#   define __ARM_ARCH__ __ARM_ARCH
 /*
  * Why didn't gcc define __ARM_ARCH from start? Instead it defined
  * bunch of below macros. See all_architectures[] table in
  * gcc/config/arm/arm.c. On a side note it defines
  * __ARMEL__/__ARMEB__ for little-/big-endian.
  */
#  elif defined(__ARM_ARCH_8A__)
#   define __ARM_ARCH__ 8
#  elif	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
# elif defined(_MSC_VER)
#  define __ARMEL__
#  if defined(_M_ARM)
#   define __ARM_ARCH__ _M_ARM
#   if defined(_M_THUMB)
#    define __thumb__
#    if _M_THUMB >= 7
#     define __thumb2__
#    endif
#   endif
#  elif defined(_M_ARM64)
#   define __AARCH64EL__
#   define __ARM_ARCH__ 8
#  else
#   error "unsupported ARM architecture"
#  endif
# endif
#endif

#if !defined(__ARM_MAX_ARCH__)
# define __ARM_MAX_ARCH__ __ARM_ARCH__
#endif

#if __ARM_MAX_ARCH__<__ARM_ARCH__
# error "__ARM_MAX_ARCH__ can't be less than __ARM_ARCH__"
#elif __ARM_MAX_ARCH__!=__ARM_ARCH__
# if __ARM_ARCH__<7 && __ARM_MAX_ARCH__>=7 && defined(__ARMEB__)
#  error "can't build universal big-endian binary"
# endif
#endif

#ifndef __ASSEMBLER__
extern unsigned int OPENSSL_armcap_P;
#endif

#define ARMV7_NEON	(1<<0)
#define ARMV7_TICK	(1<<1)
#define ARMV8_AES	(1<<2)
#define ARMV8_SHA1	(1<<3)
#define ARMV8_SHA256	(1<<4)
#define ARMV8_PMULL	(1<<5)
#define ARMV8_SHA512	(1<<6)

#endif