Add a component to all.sh to build with MBEDTLS_SHA*_USE_A64_CRYPTO_ONLY

Signed-off-by: Tom Cosgrove <[email protected]>

tests/scripts/all.sh

@@ -2620,6 +2620,34 @@ component_test_no_x509_info () {
     tests/ssl-opt.sh
 }
 
+component_build_neon_intrinsics () {
+    msg "build: default + MBEDTLS_SHAxxx_USE_A64_CRYPTO_ONLY"
+    scripts/config.py set MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY
+    scripts/config.py set MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY
+    make CFLAGS="-march=armv8.2-a+crypto+sha3" lib
+}
+
+support_build_neon_intrinsics () {
+    case $(uname -m) in
+        aarch64|arm64) true;;
+        *) return 1;;   # i.e. not supported
+    esac
+    CCVER=$(cc --version)
+    if echo "$CCVER" | grep -q clang; then
+        # clang supports SHA256 intrinsics and SHA512 instructions from 7.x
+        MAJ=$(echo "$CCVER" | grep 'clang version' | sed 's/.*clang version \([0-9]\+\).*/\1/')
+        expr "$MAJ" \> 6 >/dev/null
+    else
+        if echo "$CCVER" | grep -q gcc; then
+            # gcc supports SHA256 and SHA512 intrinsics from 8.x
+            MAJ=$(cc -dumpversion | sed 's/\..*//')
+            expr "$MAJ" \> 7 >/dev/null
+        else
+            false
+        fi
+    fi
+}
+
 component_build_arm_none_eabi_gcc () {
     msg "build: ${ARM_NONE_EABI_GCC_PREFIX}gcc -O1" # ~ 10s
     scripts/config.py baremetal