I think I've finally got malloc working right.
[riscv-tests.git] / debug / gdbserver.py
index f7d8d2ebfb6a83cfed233870b00b34eb25b1f097..0f5c28e50430b3a38257630909dc83c87e1000fd 100755 (executable)
@@ -157,7 +157,11 @@ class InstantHaltTest(DeleteServer):
 
 class DebugTest(DeleteServer):
     def setUp(self):
-        self.binary = target.compile("programs/debug.c", "programs/checksum.c")
+        # Include malloc so that gdb can make function calls. I suspect this
+        # malloc will silently blow through the memory set aside for it, so be
+        # careful.
+        self.binary = target.compile("programs/debug.c", "programs/checksum.c",
+                "programs/tiny-malloc.c", "-DDEFINE_MALLOC", "-DDEFINE_FREE")
         self.server = target.server()
         self.gdb = testlib.Gdb()
         self.gdb.command("file %s" % self.binary)
@@ -165,13 +169,26 @@ class DebugTest(DeleteServer):
         self.gdb.load()
         self.gdb.b("_exit")
 
-    def exit(self):
+    def exit(self, expected_result = 0xc86455d4):
         output = self.gdb.c()
         self.assertIn("Breakpoint", output)
-        #TODO self.assertIn("_exit", output)
-        #TODO self.assertEqual(self.gdb.p("status"), 0xc86455d4)
-        # Use a0 until gdb can resolve "status"
-        self.assertEqual(self.gdb.p("$a0") & 0xffffffff, 0xc86455d4)
+        self.assertIn("_exit", output)
+        self.assertEqual(self.gdb.p("status"), expected_result)
+
+    def test_function_call(self):
+        self.gdb.b("main:start")
+        self.gdb.c()
+        text = "Howdy, Earth!"
+        gdb_length = self.gdb.p('strlen("%s")' % text)
+        self.assertEqual(gdb_length, len(text))
+        self.exit()
+
+    def test_change_string(self):
+        text = "This little piggy went to the market."
+        self.gdb.b("main:start")
+        self.gdb.c()
+        self.gdb.p('fox = "%s"' % text)
+        self.exit(0x43b497b8)
 
     def test_turbostep(self):
         """Single step a bunch of times."""