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

Change-Id: I3abaca932985a06b06887b962e769f2eac96c738

test/sve/src/011.c

@@ -0,0 +1,112 @@
+/* 011.c COPYRIGHT FUJITSU LIMITED 2016-2019 */
+/* Preservation check signalhsndler(use sigaltstack) before and after. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <errno.h>
+#include "common.h"
+
+static unsigned long used_stack_addr;
+
+static void sig_handler(int sig)
+{
+	unsigned int vl = sve_get_vl();
+	unsigned int vq = sve_vq_from_vl(vl);
+	void *wr_buf = calloc(1, (vl * 35) + 15);
+	void *align_wr_buf = (void *)(((unsigned long)(wr_buf + 15)) & ~15UL);
+	unsigned int fpscr[2] = { 0, 0 };
+
+	if (!wr_buf) {
+		printf("calloc() failed.\n");
+		return;
+	}
+
+	/* stack addr set */
+	used_stack_addr = (unsigned long)&vl;
+
+	/* set dirty */
+	gen_test_sve_dirty(align_wr_buf, vq);
+	write_sve(align_wr_buf, vq, fpscr);
+
+	free(wr_buf);
+}
+
+#define ALTSTACK_SIZE 16384 /* recommendation size */
+
+TEST_FUNC(TEST_NUMBER, unused1, vq, unused2, unused3)
+{
+	struct fpsimd_sve_state(vq) rd_buf;
+	struct fpsimd_sve_state(vq) wr_buf;
+	stack_t ss;
+	unsigned int fpscr[2] = { 0, 0 };
+	int ret = -1;
+	void *sstack = calloc(1, ALTSTACK_SIZE);
+	void *cmp_ss = calloc(1, ALTSTACK_SIZE);
+	struct sigaction act;
+
+	print_test_overview(tp_num);
+
+	memset(&rd_buf, 0, sizeof(rd_buf));
+	memset(&wr_buf, 0, sizeof(wr_buf));
+
+	if (!sstack || !cmp_ss) {
+		printf("calloc() failed.\n");
+		goto end;
+	}
+
+	memset(&ss, 0, sizeof(ss));
+	ss.ss_sp = sstack;
+	ss.ss_size = ALTSTACK_SIZE;
+	ss.ss_flags = 0;
+
+	if (sigaltstack(&ss, NULL)) {
+		perror("sigaltstack");
+		goto out;
+	}
+
+	memset(&act, 0, sizeof(act));
+	act.sa_flags = SA_ONSTACK | SA_RESETHAND;
+	act.sa_handler = sig_handler;
+	if (sigaction(SIGUSR1, &act, NULL)) {
+		perror("sigaction()");
+		goto out;
+	}
+
+	/* before sighandler */
+	gen_test_sve(&wr_buf, vq);
+	write_sve(&wr_buf, vq, fpscr);
+
+	if (raise(SIGUSR1)) {
+		perror("raise(SIGUSR1)");
+		goto out;
+	}
+
+	if ((unsigned long)ss.ss_sp > used_stack_addr ||
+		used_stack_addr >= (unsigned long)ss.ss_sp + ss.ss_size) {
+		printf("altstack area unused.\n");
+		goto out;
+	}
+
+	/* after sighandler */
+	read_sve(&rd_buf, vq, fpscr);
+
+	/* compare */
+	if (sve_compare(&wr_buf, &rd_buf, vq)) {
+		printf("compare failed.\n");
+		goto out;
+	}
+
+	/* success. */
+	ret = 0;
+out:
+	free(sstack);
+	free(cmp_ss);
+end:
+	if (ret == 0) {
+		printf("RESULT: OK.\n");
+	} else {
+		printf("RESULT: NG.\n");
+	}
+	return ret;
+}