cpusupport: ARM-SHA256: compile-time detection

Tarsnap · Feb 20, 2021 · 9757296 · 9757296
1 parent 5b2f08a
commit 9757296
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Showing 2 changed files with 19 additions and 0 deletions.
diff --git a/libcperciva/cpusupport/Build/cpusupport-ARM-SHA256.c b/libcperciva/cpusupport/Build/cpusupport-ARM-SHA256.c
@@ -0,0 +1,16 @@
+#ifdef __ARM_NEON
+#include <arm_neon.h>
+#endif
+
+int
+main(void)
+{
+	uint32x4_t w0 = {0};
+	uint32x4_t w4 = {0};
+	uint32x4_t output;
+
+	output = vsha256su0q_u32(w0, w4);
+	(void)output; /* UNUSED */
+
+	return (0);
+}
diff --git a/libcperciva/cpusupport/Build/cpusupport.sh b/libcperciva/cpusupport/Build/cpusupport.sh
@@ -80,3 +80,6 @@ feature ARM CRC32_64 "-march=armv8.1-a"					\
     "-march=armv8.1-a+crc"						\
     "-march=armv8.1-a+crc -Wno-cast-align"				\
     "-march=armv8.1-a -D__ARM_ACLE=200"
+feature ARM SHA256 "-march=armv8.1-a+crypto"				\
+    "-march=armv8.1-a+crypto -Wno-cast-align"				\
+    "-march=armv8.1-a+crypto -D__ARM_ACLE=200"