Test "Scalable Vector Extension (SVE) support." on arm64

Change-Id: I3abaca932985a06b06887b962e769f2eac96c738

test/sve/src/022.c

@@ -0,0 +1,56 @@
+/* 022.c COPYRIGHT FUJITSU LIMITED 2017-2019 */
+/* Use execve() VL check if setting INHERIT flags.
+ * (execve target is #1 testcase)
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "common.h"
+
+extern char **environ;
+TEST_FUNC(TEST_NUMBER, vl, vq, unused1, tp_argv)
+{
+	char *self = (char *)tp_argv[0];
+	struct fpsimd_sve_state(vq) rd_buf;
+	struct fpsimd_sve_state(vq) wr_buf;
+	unsigned int fpscr[2] = { 0, 0 };
+	char *const execve_args[] = {
+		"", "1", NULL
+	};
+	int ret = -1;
+
+	print_test_overview(tp_num);
+
+	memset(&rd_buf, 0, sizeof(rd_buf));
+	memset(&wr_buf, 0, sizeof(wr_buf));
+
+	gen_test_sve(&wr_buf, vq);
+	write_sve(&wr_buf, vq, fpscr);
+	read_sve(&rd_buf, vq, fpscr);
+
+	if (sve_compare(&wr_buf, &rd_buf, vq)) {
+		printf("Dirty SVE-register before executing execve(), NG.\n");
+		goto out;
+	}
+	printf("Dirty SVE-register before executing execve(), OK.\n");
+
+	if (set_and_compare_vl(gen_set_vl(vl) | PR_SVE_VL_INHERIT)) {
+		printf("prctl: error.\n");
+		goto out;
+	}
+
+	printf("=== look at the contents of the register "
+		"since run execve. ===\n");
+
+	ret = execve(self, execve_args, environ);
+	if (ret == -1) {
+		perror("execve()");
+	} else {
+		ret = -1;
+		printf("Why return execve() ???\n");
+	}
+out:
+	printf("RESULT: NG.\n");
+	return ret;
+}