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

Change-Id: I3abaca932985a06b06887b962e769f2eac96c738

test/sve/src/021.c

@@ -0,0 +1,101 @@
+/* 021.c COPYRIGHT FUJITSU LIMITED 2017-2019 */
+/* Use pthread_create() VL check if setting INHERIT flags. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include "common.h"
+
+static void *child_function(void *arg)
+{
+	void *ret = (void *)-1;
+	unsigned int vl = sve_get_vl();
+	unsigned int vq = sve_vq_from_vl(vl);
+	unsigned int *dfl_vl = (unsigned int *)arg;
+	void *rd_buf = calloc(1, (vl * 35) + 15);
+	void *cmp_buf = NULL, *align_cmp_buf = NULL;
+	void *align_rd_buf = (void *)(((unsigned long)(rd_buf + 15)) & ~15UL);
+	unsigned int fpscr[2] = { 0, 0 };
+
+	if (!rd_buf) {
+		printf("calloc() failed.\n");
+		goto out;
+	}
+
+	if (get_and_compare_vl(gen_set_vl(*dfl_vl) | PR_SVE_VL_INHERIT)) {
+		printf("prctl: error.\n");
+		goto rd_free_out;
+	}
+	read_sve(align_rd_buf, vq, fpscr);
+
+	cmp_buf = calloc(1, (vl * 35) + 15);
+	if (!cmp_buf) {
+		printf("calloc() failed.\n");
+		goto rd_free_out;
+	}
+	align_cmp_buf = (void *)(((unsigned long)(rd_buf + 15)) & ~15UL);
+	gen_test_sve_low_128(align_cmp_buf, sve_vq_from_vl(*dfl_vl), vq);
+
+	if (sve_compare(align_cmp_buf, align_rd_buf, vq)) {
+		printf("child-thread register compare failed.\n");
+		goto cmp_free_out;
+	}
+
+	/* success */
+	ret = NULL;
+
+cmp_free_out:
+	free(cmp_buf);
+rd_free_out:
+	free(rd_buf);
+out:
+	pthread_exit(ret);
+	return NULL;
+}
+
+TEST_FUNC(TEST_NUMBER, vl, vq, unused1, unused2)
+{
+	void *pret = (void *)-1;
+	struct fpsimd_sve_state(vq) rd_buf;
+	struct fpsimd_sve_state(vq) wr_buf;
+	unsigned int fpscr[2] = { 0, 0 };
+	pthread_t thread;
+	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("parent-thread compare failed.\n");
+		goto out;
+	}
+
+	if (set_and_compare_vl(gen_set_vl(vl) | PR_SVE_VL_INHERIT)) {
+		printf("prctl: error.\n");
+		goto out;
+	}
+
+	if (pthread_create(&thread, NULL, child_function, &vl)) {
+		printf("pthread_create: error.\n");
+		goto out;
+	}
+
+	if (pthread_join(thread, &pret)) {
+		printf("pthread_join: error.\n");
+		goto out;
+	}
+out:
+	if (pret == NULL) {
+		ret = 0;
+		printf("RESULT: OK.\n");
+	} else {
+		printf("RESULT: NG.\n");
+	}
+	return ret;
+}