From 92913ab478bee317ae067571b246e37133ad0b80 Mon Sep 17 00:00:00 2001
From: Toby Jaffey <toby@ringtailsoftware.co.uk>
Date: Sat, 13 Dec 2025 18:02:43 +0000
Subject: [PATCH] Add test for reading code which is too large

---
 test/Makefile             |  3 ++-
 test/badcode/Makefile     |  2 ++
 test/badcode/rom/Makefile |  2 ++
 test/badcode/rom/rom.c    |  7 +++++++
 test/badcode/test/tests.c | 23 +++++++++++++++++++++++
 5 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 test/badcode/Makefile
 create mode 100644 test/badcode/rom/Makefile
 create mode 100644 test/badcode/rom/rom.c
 create mode 100644 test/badcode/test/tests.c

diff --git a/test/Makefile b/test/Makefile
index 4e16274..983a645 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -4,7 +4,8 @@ TESTS = \
     custom_syscall  \
     syscall_args \
     meter \
-    extram
+    extram \
+    badcode
 
 RUNCMD = $(foreach TEST,${TESTS},make -C ${TEST} &&)
 CLEANCMD = $(foreach TEST,${TESTS},make -C ${TEST} clean &&)
diff --git a/test/badcode/Makefile b/test/badcode/Makefile
new file mode 100644
index 0000000..dc44dd1
--- /dev/null
+++ b/test/badcode/Makefile
@@ -0,0 +1,2 @@
+TOPDIR=../..
+include ${TOPDIR}/test/common/makefile.common
diff --git a/test/badcode/rom/Makefile b/test/badcode/rom/Makefile
new file mode 100644
index 0000000..4cd3f50
--- /dev/null
+++ b/test/badcode/rom/Makefile
@@ -0,0 +1,2 @@
+TOPDIR=../../..
+include ${TOPDIR}/test/common/makefile-rom.common
diff --git a/test/badcode/rom/rom.c b/test/badcode/rom/rom.c
new file mode 100644
index 0000000..f8416d7
--- /dev/null
+++ b/test/badcode/rom/rom.c
@@ -0,0 +1,7 @@
+#include "uvm32_target.h"
+
+void main(void) {
+    void *p = NULL;
+    println(p);
+}
+
diff --git a/test/badcode/test/tests.c b/test/badcode/test/tests.c
new file mode 100644
index 0000000..05e51c7
--- /dev/null
+++ b/test/badcode/test/tests.c
@@ -0,0 +1,23 @@
+#include <string.h>
+#include "unity.h"
+#include "uvm32.h"
+#include "../common/uvm32_common_custom.h"
+
+#include "rom-header.h"
+
+static uvm32_state_t vmst;
+//static uvm32_evt_t evt;
+
+void setUp(void) {
+}
+
+void tearDown(void) {
+}
+
+void test_giant_rom(void) {
+    // try to load a ROM bigger than we have space for
+    uvm32_init(&vmst);
+    TEST_ASSERT_EQUAL(false, uvm32_load(&vmst, rom_bin, UVM32_MEMORY_SIZE+1)); // if it reads off end of rom_bin, will crash
+}
+
+