Squashed 'lib/mbedtls/external/mbedtls/' content from commit 2ca6c285a0dd
git-subtree-dir: lib/mbedtls/external/mbedtls
git-subtree-split: 2ca6c285a0dd3f33982dd57299012dacab1ff206
diff --git a/library/mps_trace.h b/library/mps_trace.h
new file mode 100644
index 0000000..b456b2f
--- /dev/null
+++ b/library/mps_trace.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright The Mbed TLS Contributors
+ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+/**
+ * \file mps_trace.h
+ *
+ * \brief Tracing module for MPS
+ */
+
+#ifndef MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H
+#define MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H
+
+#include "common.h"
+#include "mps_common.h"
+#include "mps_trace.h"
+
+#include "mbedtls/platform.h"
+
+#if defined(MBEDTLS_MPS_ENABLE_TRACE)
+
+/*
+ * Adapt this to enable/disable tracing output
+ * from the various layers of the MPS.
+ */
+
+#define MBEDTLS_MPS_TRACE_ENABLE_LAYER_1
+#define MBEDTLS_MPS_TRACE_ENABLE_LAYER_2
+#define MBEDTLS_MPS_TRACE_ENABLE_LAYER_3
+#define MBEDTLS_MPS_TRACE_ENABLE_LAYER_4
+#define MBEDTLS_MPS_TRACE_ENABLE_READER
+#define MBEDTLS_MPS_TRACE_ENABLE_WRITER
+
+/*
+ * To use the existing trace module, only change
+ * MBEDTLS_MPS_TRACE_ENABLE_XXX above, but don't modify the
+ * rest of this file.
+ */
+
+typedef enum {
+ MBEDTLS_MPS_TRACE_TYPE_COMMENT,
+ MBEDTLS_MPS_TRACE_TYPE_CALL,
+ MBEDTLS_MPS_TRACE_TYPE_ERROR,
+ MBEDTLS_MPS_TRACE_TYPE_RETURN
+} mbedtls_mps_trace_type;
+
+#define MBEDTLS_MPS_TRACE_BIT_LAYER_1 1
+#define MBEDTLS_MPS_TRACE_BIT_LAYER_2 2
+#define MBEDTLS_MPS_TRACE_BIT_LAYER_3 3
+#define MBEDTLS_MPS_TRACE_BIT_LAYER_4 4
+#define MBEDTLS_MPS_TRACE_BIT_WRITER 5
+#define MBEDTLS_MPS_TRACE_BIT_READER 6
+
+#if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_1)
+#define MBEDTLS_MPS_TRACE_MASK_LAYER_1 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_1)
+#else
+#define MBEDTLS_MPS_TRACE_MASK_LAYER_1 0
+#endif
+
+#if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_2)
+#define MBEDTLS_MPS_TRACE_MASK_LAYER_2 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_2)
+#else
+#define MBEDTLS_MPS_TRACE_MASK_LAYER_2 0
+#endif
+
+#if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_3)
+#define MBEDTLS_MPS_TRACE_MASK_LAYER_3 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_3)
+#else
+#define MBEDTLS_MPS_TRACE_MASK_LAYER_3 0
+#endif
+
+#if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_4)
+#define MBEDTLS_MPS_TRACE_MASK_LAYER_4 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_4)
+#else
+#define MBEDTLS_MPS_TRACE_MASK_LAYER_4 0
+#endif
+
+#if defined(MBEDTLS_MPS_TRACE_ENABLE_READER)
+#define MBEDTLS_MPS_TRACE_MASK_READER (1u << MBEDTLS_MPS_TRACE_BIT_READER)
+#else
+#define MBEDTLS_MPS_TRACE_MASK_READER 0
+#endif
+
+#if defined(MBEDTLS_MPS_TRACE_ENABLE_WRITER)
+#define MBEDTLS_MPS_TRACE_MASK_WRITER (1u << MBEDTLS_MPS_TRACE_BIT_WRITER)
+#else
+#define MBEDTLS_MPS_TRACE_MASK_WRITER 0
+#endif
+
+#define MBEDTLS_MPS_TRACE_MASK (MBEDTLS_MPS_TRACE_MASK_LAYER_1 | \
+ MBEDTLS_MPS_TRACE_MASK_LAYER_2 | \
+ MBEDTLS_MPS_TRACE_MASK_LAYER_3 | \
+ MBEDTLS_MPS_TRACE_MASK_LAYER_4 | \
+ MBEDTLS_MPS_TRACE_MASK_READER | \
+ MBEDTLS_MPS_TRACE_MASK_WRITER)
+
+/* We have to avoid globals because E-ACSL chokes on them...
+ * Wrap everything in stub functions. */
+int mbedtls_mps_trace_get_depth(void);
+void mbedtls_mps_trace_inc_depth(void);
+void mbedtls_mps_trace_dec_depth(void);
+
+void mbedtls_mps_trace_color(int id);
+void mbedtls_mps_trace_indent(int level, mbedtls_mps_trace_type ty);
+
+void mbedtls_mps_trace_print_msg(int id, int line, const char *format, ...);
+
+#define MBEDTLS_MPS_TRACE(type, ...) \
+ do { \
+ if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \
+ break; \
+ mbedtls_mps_trace_indent(mbedtls_mps_trace_get_depth(), type); \
+ mbedtls_mps_trace_color(mbedtls_mps_trace_id); \
+ mbedtls_mps_trace_print_msg(mbedtls_mps_trace_id, __LINE__, __VA_ARGS__); \
+ mbedtls_mps_trace_color(0); \
+ } while (0)
+
+#define MBEDTLS_MPS_TRACE_INIT(...) \
+ do { \
+ if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \
+ break; \
+ MBEDTLS_MPS_TRACE(MBEDTLS_MPS_TRACE_TYPE_CALL, __VA_ARGS__); \
+ mbedtls_mps_trace_inc_depth(); \
+ } while (0)
+
+#define MBEDTLS_MPS_TRACE_END(val) \
+ do { \
+ if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \
+ break; \
+ MBEDTLS_MPS_TRACE(MBEDTLS_MPS_TRACE_TYPE_RETURN, "%d (-%#04x)", \
+ (int) (val), -((unsigned) (val))); \
+ mbedtls_mps_trace_dec_depth(); \
+ } while (0)
+
+#define MBEDTLS_MPS_TRACE_RETURN(val) \
+ do { \
+ /* Breaks tail recursion. */ \
+ int ret__ = val; \
+ MBEDTLS_MPS_TRACE_END(ret__); \
+ return ret__; \
+ } while (0)
+
+#else /* MBEDTLS_MPS_TRACE */
+
+#define MBEDTLS_MPS_TRACE(type, ...) do { } while (0)
+#define MBEDTLS_MPS_TRACE_INIT(...) do { } while (0)
+#define MBEDTLS_MPS_TRACE_END do { } while (0)
+
+#define MBEDTLS_MPS_TRACE_RETURN(val) return val;
+
+#endif /* MBEDTLS_MPS_TRACE */
+
+#endif /* MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H */