text: /* Copyright (c) (2012,2014,2015,2016,2017,2018,2019) Apple Inc. All rights reserved.
   *
   * corecrypto is licensed under Apple Inc.’s Internal Use License Agreement (which
   * is contained in the License.txt file distributed with corecrypto) and only to 
   * people who accept that license. IMPORTANT:  Any license rights granted to you by 
   * Apple Inc. (if any) are limited to internal use within your organization only on 
   * devices and computers you own or control, for the sole purpose of verifying the 
   * security characteristics and correct functioning of the Apple Software.  You may 
   * not, directly or indirectly, redistribute the Apple Software or any portions thereof.
   */
  
  #include <corecrypto/ccsha2.h>
  #include "ccsha2_internal.h"
  #include <corecrypto/cc_runtime_config.h>
  
  #include "corecrypto/fipspost_trace.h"
  
  const struct ccdigest_info *ccsha256_di(void)
  {
      FIPSPOST_TRACE_EVENT;
  
  #if  CCSHA2_VNG_INTEL
  #if defined (__x86_64__)
      if (CC_HAS_AVX512_AND_IN_KERNEL())
          return &ccsha256_vng_intel_SupplementalSSE3_di;
      else
  #if CC_ACCELERATECRYPTO
      return &ccsha256_vng_intel_di; // use AccelerateCrypto
  #else
      return ( (CC_HAS_AVX2() ? &ccsha256_vng_intel_AVX2_di :
      		( (CC_HAS_AVX1() ? &ccsha256_vng_intel_AVX1_di :
  			&ccsha256_vng_intel_SupplementalSSE3_di ) ) ) ) ;
  #endif
  #else
      return &ccsha256_vng_intel_SupplementalSSE3_di;
  #endif
  #elif  CCSHA2_VNG_ARM
      return &ccsha256_vng_arm_di;
  #elif CCSHA256_ARMV6M_ASM
      return &ccsha256_v6m_di;
  #else
      return &ccsha256_ltc_di;
  #endif
  }
  