168 lines
6 KiB
C
168 lines
6 KiB
C
/*
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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/**
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* \file mps_trace.h
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*
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* \brief Tracing module for MPS
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*/
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#ifndef MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H
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#define MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H
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#include "common.h"
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#include "mps_common.h"
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#include "mps_trace.h"
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#include "mbedtls/platform.h"
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#if defined(MBEDTLS_MPS_ENABLE_TRACE)
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/*
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* Adapt this to enable/disable tracing output
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* from the various layers of the MPS.
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*/
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#define MBEDTLS_MPS_TRACE_ENABLE_LAYER_1
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#define MBEDTLS_MPS_TRACE_ENABLE_LAYER_2
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#define MBEDTLS_MPS_TRACE_ENABLE_LAYER_3
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#define MBEDTLS_MPS_TRACE_ENABLE_LAYER_4
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#define MBEDTLS_MPS_TRACE_ENABLE_READER
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#define MBEDTLS_MPS_TRACE_ENABLE_WRITER
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/*
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* To use the existing trace module, only change
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* MBEDTLS_MPS_TRACE_ENABLE_XXX above, but don't modify the
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* rest of this file.
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*/
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typedef enum {
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MBEDTLS_MPS_TRACE_TYPE_COMMENT,
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MBEDTLS_MPS_TRACE_TYPE_CALL,
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MBEDTLS_MPS_TRACE_TYPE_ERROR,
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MBEDTLS_MPS_TRACE_TYPE_RETURN
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} mbedtls_mps_trace_type;
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#define MBEDTLS_MPS_TRACE_BIT_LAYER_1 1
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#define MBEDTLS_MPS_TRACE_BIT_LAYER_2 2
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#define MBEDTLS_MPS_TRACE_BIT_LAYER_3 3
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#define MBEDTLS_MPS_TRACE_BIT_LAYER_4 4
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#define MBEDTLS_MPS_TRACE_BIT_WRITER 5
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#define MBEDTLS_MPS_TRACE_BIT_READER 6
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#if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_1)
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#define MBEDTLS_MPS_TRACE_MASK_LAYER_1 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_1)
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#else
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#define MBEDTLS_MPS_TRACE_MASK_LAYER_1 0
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#endif
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#if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_2)
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#define MBEDTLS_MPS_TRACE_MASK_LAYER_2 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_2)
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#else
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#define MBEDTLS_MPS_TRACE_MASK_LAYER_2 0
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#endif
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#if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_3)
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#define MBEDTLS_MPS_TRACE_MASK_LAYER_3 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_3)
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#else
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#define MBEDTLS_MPS_TRACE_MASK_LAYER_3 0
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#endif
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#if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_4)
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#define MBEDTLS_MPS_TRACE_MASK_LAYER_4 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_4)
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#else
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#define MBEDTLS_MPS_TRACE_MASK_LAYER_4 0
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#endif
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#if defined(MBEDTLS_MPS_TRACE_ENABLE_READER)
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#define MBEDTLS_MPS_TRACE_MASK_READER (1u << MBEDTLS_MPS_TRACE_BIT_READER)
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#else
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#define MBEDTLS_MPS_TRACE_MASK_READER 0
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#endif
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#if defined(MBEDTLS_MPS_TRACE_ENABLE_WRITER)
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#define MBEDTLS_MPS_TRACE_MASK_WRITER (1u << MBEDTLS_MPS_TRACE_BIT_WRITER)
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#else
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#define MBEDTLS_MPS_TRACE_MASK_WRITER 0
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#endif
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#define MBEDTLS_MPS_TRACE_MASK (MBEDTLS_MPS_TRACE_MASK_LAYER_1 | \
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MBEDTLS_MPS_TRACE_MASK_LAYER_2 | \
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MBEDTLS_MPS_TRACE_MASK_LAYER_3 | \
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MBEDTLS_MPS_TRACE_MASK_LAYER_4 | \
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MBEDTLS_MPS_TRACE_MASK_READER | \
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MBEDTLS_MPS_TRACE_MASK_WRITER)
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/* We have to avoid globals because E-ACSL chokes on them...
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* Wrap everything in stub functions. */
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int mbedtls_mps_trace_get_depth(void);
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void mbedtls_mps_trace_inc_depth(void);
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void mbedtls_mps_trace_dec_depth(void);
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void mbedtls_mps_trace_color(int id);
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void mbedtls_mps_trace_indent(int level, mbedtls_mps_trace_type ty);
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void mbedtls_mps_trace_print_msg(int id, int line, const char *format, ...);
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#define MBEDTLS_MPS_TRACE(type, ...) \
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do { \
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if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \
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break; \
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mbedtls_mps_trace_indent(mbedtls_mps_trace_get_depth(), type); \
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mbedtls_mps_trace_color(mbedtls_mps_trace_id); \
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mbedtls_mps_trace_print_msg(mbedtls_mps_trace_id, __LINE__, __VA_ARGS__); \
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mbedtls_mps_trace_color(0); \
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} while (0)
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#define MBEDTLS_MPS_TRACE_INIT(...) \
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do { \
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if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \
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break; \
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MBEDTLS_MPS_TRACE(MBEDTLS_MPS_TRACE_TYPE_CALL, __VA_ARGS__); \
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mbedtls_mps_trace_inc_depth(); \
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} while (0)
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#define MBEDTLS_MPS_TRACE_END(val) \
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do { \
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if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \
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break; \
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MBEDTLS_MPS_TRACE(MBEDTLS_MPS_TRACE_TYPE_RETURN, "%d (-%#04x)", \
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(int) (val), -((unsigned) (val))); \
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mbedtls_mps_trace_dec_depth(); \
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} while (0)
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#define MBEDTLS_MPS_TRACE_RETURN(val) \
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do { \
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/* Breaks tail recursion. */ \
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int ret__ = val; \
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MBEDTLS_MPS_TRACE_END(ret__); \
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return ret__; \
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} while (0)
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#else /* MBEDTLS_MPS_TRACE */
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#define MBEDTLS_MPS_TRACE(type, ...) do { } while (0)
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#define MBEDTLS_MPS_TRACE_INIT(...) do { } while (0)
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#define MBEDTLS_MPS_TRACE_END do { } while (0)
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#define MBEDTLS_MPS_TRACE_RETURN(val) return val;
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#endif /* MBEDTLS_MPS_TRACE */
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#endif /* MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H */
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