1 files changed, 31 insertions, 0 deletions
diff --git a/read.c b/read.c
new file mode 100644
index 0000000..28d7b8a
--- /dev/null
+++ b/read.c
@@ -0,0 +1,31 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <assert.h>
+#include <unistd.h>
+
+int
+main(int argc, const char **argv)
+{
+	uint16_t counts[64];
+	size_t i, len;
+	int fd;
+
+	fd = open("/proc/cachepc", O_RDONLY);
+	len = read(fd, counts, sizeof(counts));
+	assert(len == sizeof(counts));
+
+	for (i = 0; i < 64; i++) {
+		if (i % 16 == 0 && i)
+			printf("\n");
+		if (counts[i] > 0)
+			printf("\x1b[91m");
+		printf("%2i ", i);
+		if (counts[i] > 0)
+			printf("\x1b[0m");
+	}
+	printf("\n");
+	
+	close(fd);
+}