From 060f84e07de983bc4ebf9077abc60a028de1c999 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rados=C5=82aw=20Kujawa?= <radoslaw.kujawa@c0ff33.net>
Date: Wed, 13 Jun 2018 10:29:26 +0200
Subject: [PATCH] Fail if mapping exceeding the bus size

---
 src/bus.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/bus.c b/src/bus.c
index 68ebcd4..cfde423 100644
--- a/src/bus.c
+++ b/src/bus.c
@@ -27,10 +27,16 @@ bus_device_add(bus_t *b, device_t *d, uint16_t addr)
 {
 	device_mapping_t *dm;
 
+	if ((addr + d->size) > RK65C02_BUS_SIZE) {
+		rk65c02_log(LOG_ERROR,
+		    "Bus mapping for %s at %x, size %x exceeding bus size.",
+		    d->name, addr, d->size);
+		return;
+	}
+
 	dm = (device_mapping_t *) GC_MALLOC(sizeof(device_mapping_t));
 
 	dm->dev = d;
-	/* TODO: check if addr + size is not bigger than RK65C02_BUS_SIZE */
 	dm->addr = addr;
 
 	LL_APPEND((b->dm_head), dm);