Add stub implementation for MPS tracing API
MPS' tracing module uses four macros:
1) TRACE( type, fmt, ... )
This acts like `printf( fmt, ... )` but also allows
the specification of a type of trace output (comment,
warning, error, ...)
2) TRACE_INIT
This acts like TRACE() but increases the level of
indentation. It will be used at the beginning of
function calls.
3) RETURN( val )
Equivalent to `return( val )` plus a decrement in the
level of indentation. This should be used at the end of
functions that have been started with TRACE_INIT.
4) TRACE_END
This combines a trace output with a decrement of the
level of indentation. It's necessary prior to leaving
functions which have been started with TRACE_INIT
but which don't have a return value.
This commit defines those macros as no-op dummies in
`library/mps/trace.h` for now.
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/library/mps/common.h b/library/mps/common.h
index becd177..84c5841 100644
--- a/library/mps/common.h
+++ b/library/mps/common.h
@@ -48,7 +48,7 @@
#define MBEDTLS_MPS_ENABLE_ASSERTIONS
/*! This flag controls whether tracing for MPS should be enabled. */
-#define MBEDTLS_MPS_TRACE
+//#define MBEDTLS_MPS_TRACE
/* \} name SECTION: MPS Configuration */
diff --git a/library/mps/trace.h b/library/mps/trace.h
new file mode 100644
index 0000000..1ce079d
--- /dev/null
+++ b/library/mps/trace.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright The Mbed TLS Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+/**
+ * \file trace.h
+ *
+ * \brief Tracing module for MPS
+ */
+
+#ifndef MBEDTLS_MPS_TRACE_H
+#define MBEDTLS_MPS_TRACE_H
+
+#include "common.h"
+
+#if defined(MBEDTLS_MPS_TRACE)
+
+#error "MPS tracing module not yet implemented"
+
+#else /* MBEDTLS_MPS_TRACE */
+
+#define TRACE( type, fmt, ... ) do { } while( 0 )
+#define TRACE_INIT( fmt, ... ) do { } while( 0 )
+#define TRACE_END do { } while( 0 )
+
+#define RETURN( val ) return( val );
+
+#endif /* MBEDTLS_MPS_TRACE */
+
+#endif /* MBEDTLS_MPS_TRACE_H */