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Unit tests for memory tagging for gdbserver.

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Add some unit testing to exercise the functions handling the qMemTags and
QMemTags packets as well as feature support.

gdbserver/ChangeLog:

YYYY-MM-DD  Luis Machado  <luis.machado@linaro.org>

	* server.cc (test_memory_tagging_functions): New function.
	(captured_main): Register test_memory_tagging_functions.
This commit is contained in:
Luis Machado
2020-06-15 15:40:47 -03:00
parent de52b1c3dd
commit 46650d3074
1 changed files with 88 additions and 0 deletions
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88
gdbserver/server.cc
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@@ -3689,6 +3689,91 @@ detach_or_kill_for_exit_cleanup ()
}
}
#if GDB_SELF_TEST
namespace selftests {
static void
test_memory_tagging_functions (void)
{
/* Setup testing. */
gdb::char_vector packet;
gdb::byte_vector tags, bv;
std::string expected;
packet.resize (32000);
CORE_ADDR addr;
size_t len;
/* Test parsing a qMemTags request. */
/* Invalid request, addr and len unchanged. */
addr = 0xff;
len = 255;
strcpy (packet.data (), "qMemTags_wrong:0,0");
SELF_CHECK (parse_fmemtags_request (packet.data (), &addr, &len) != 0);
SELF_CHECK (addr == 0xff && len == 255);
/* Valid request, addr and len updated. */
addr = 0xff;
len = 255;
strcpy (packet.data (), "qMemTags:0,0");
SELF_CHECK (parse_fmemtags_request (packet.data (), &addr, &len) == 0);
SELF_CHECK (addr == 0 && len == 0);
/* Valid request, addr and len updated. */
addr = 0;
len = 0;
strcpy (packet.data (), "qMemTags:deadbeef,ff");
SELF_CHECK (parse_fmemtags_request (packet.data (), &addr, &len) == 0);
SELF_CHECK (addr == 0xdeadbeef && len == 255);
/* Test creating a qMemTags reply. */
/* Non-empty tag data. */
bv.resize (0);
for (int i = 0; i < 5; i++)
bv.push_back (i);
expected = "m0001020304";
SELF_CHECK (create_fmemtags_reply (packet.data (), bv) == 0);
SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0);
/* Empty tag data (error). */
bv.clear ();
SELF_CHECK (create_fmemtags_reply (packet.data (), bv) != 0);
/* Test parsing a QMemTags request. */
/* Invalid request and non-empty tag data: addr, len and tags unchanged. */
addr = 0xff;
len = 255;
tags.resize (5);
strcpy (packet.data (), "QMemTags_wrong:0,0:");
SELF_CHECK (parse_smemtags_request (packet.data (), &addr, &len, tags) != 0);
SELF_CHECK (addr == 0xff && len == 255 && tags.size () == 5);
/* Valid request and empty tag data: addr, len and tags updated. */
addr = 0xff;
len = 255;
tags.resize (5);
strcpy (packet.data (), "QMemTags:0,0:");
SELF_CHECK (parse_smemtags_request (packet.data (), &addr, &len, tags) == 0);
SELF_CHECK (addr == 0 && len == 0 && tags.size () == 0);
/* Valid request and non-empty tag data: addr, len and tags updated. */
addr = 0;
len = 0;
tags.resize (0);
strcpy (packet.data (),
"QMemTags:deadbeef,ff:0001020304");
SELF_CHECK (parse_smemtags_request (packet.data (), &addr, &len, tags) == 0);
SELF_CHECK (addr == 0xdeadbeef && len == 255 && tags.size () == 5);
}
} // namespace selftests
#endif /* GDB_SELF_TEST */
/* Main function. This is called by the real "main" function,
wrapped in a TRY_CATCH that handles any uncaught exceptions. */
@@ -3706,6 +3791,9 @@ captured_main (int argc, char *argv[])
bool selftest = false;
#if GDB_SELF_TEST
const char *selftest_filter = NULL;
selftests::register_test ("remote_memory_tagging",
selftests::test_memory_tagging_functions);
#endif
current_directory = getcwd (NULL, 0);