Test "mcexec additional options (h, m, n, O, stack-premap)" on arm64

Change-Id: I85d5deb0433cc1208e4b6837dcc6d6dc2a7b7b52

test/mcexec_options/arm64/extend_heap.c

@@ -0,0 +1,97 @@
+/* extend_heap.c COPYRIGHT FUJITSU LIMITED 2018 */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+static void show_usage(void)
+{
+	printf("./extend_heap <extend-heap-by(byte)>\n");
+}
+
+int main(int argc, char *argv[])
+{
+	FILE *fp = 0;
+	int result = -1;
+	unsigned long exheap = 0;
+	unsigned long start = 0;	/* dummy */
+	unsigned long bf_end = 0;
+	unsigned long af_end = 0;
+	char buf[4096];
+	char *tmp = NULL;
+	const unsigned long page_size = sysconf(_SC_PAGESIZE);
+	unsigned long align_size = page_size;
+
+	if (argc != 2) {
+		show_usage();
+		result = 0;
+		goto err;
+	}
+	exheap = atoll(argv[1]);
+
+	/* check default heap-end */
+	fp = fopen("/proc/self/maps", "r");
+	if (fp == NULL) {
+		printf("fopen() failed. %d\n", errno);
+		goto err;
+	}
+
+	while (fgets(buf, sizeof(buf), fp) != NULL) {
+		if (strstr(buf, "[heap]")) {
+			sscanf(buf, "%lx-%lx", &start, &bf_end);
+		}
+	}
+
+	if (fclose(fp)) {
+		printf("fclose() failed. %d\n", errno);
+		goto err;
+	}
+
+	/* heap-end adjustment */
+	if (brk((void *)bf_end)) {
+		printf("brk() failed. %d\n", errno);
+		goto err;
+	}
+
+	/* heap extend 1byte */
+	if (sbrk(1) == (void *)-1) {
+		printf("sbrk() failed. %d\n", errno);
+		goto err;
+	}
+
+	/* check extended heap-end */
+	fp = fopen("/proc/self/maps", "r");
+	if (fp == NULL) {
+		printf("fopen() failed. %d\n", errno);
+		goto err;
+	}
+
+	while (fgets(buf, sizeof(buf), fp) != NULL) {
+		if (strstr(buf, "[heap]")) {
+			sscanf(buf, "%lx-%lx", &start, &af_end);
+		}
+	}
+
+	if (fclose(fp)) {
+		printf("fclose() failed. %d\n", errno);
+		goto err;
+	}
+
+	if (page_size < exheap) {
+		align_size = page_size / 8 * page_size;
+	}
+
+	if ((af_end - bf_end) < exheap) {
+		printf("extend size ng.\n");
+		goto err;
+	}
+
+	if (af_end & (align_size - 1)) {
+		printf("extend align ng.\n");
+		goto err;
+	}
+	result = 0;
+err:
+	return result;
+}