1 files changed, 36 insertions, 0 deletions
diff --git a/tools/perf/util/find-map.c b/tools/perf/util/find-map.c
new file mode 100644
index 000000000..bba511795
--- /dev/null
+++ b/tools/perf/util/find-map.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int find_map(void **start, void **end, const char *name)
+{
+	FILE *maps;
+	char *line = NULL;
+	size_t len = 0;
+	int found = 0;
+
+	maps = fopen("/proc/self/maps", "r");
+	if (!maps) {
+		fprintf(stderr, "cannot open maps\n");
+		return -1;
+	}
+
+	while (!found && getline(&line, &len, maps) != -1) {
+		int m = -1;
+
+		/* We care only about private r-x mappings. */
+		if (2 != sscanf(line, "%p-%p r-xp %*x %*x:%*x %*u %n",
+				start, end, &m))
+			continue;
+		if (m < 0)
+			continue;
+
+		if (!strncmp(&line[m], name, strlen(name)))
+			found = 1;
+	}
+
+	free(line);
+	fclose(maps);
+	return !found;
+}