1 /* 2 * Copyright The Mbed TLS Contributors 3 * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later 4 */ 5 6 /** 7 * \file mps_trace.h 8 * 9 * \brief Tracing module for MPS 10 */ 11 12 #ifndef MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H 13 #define MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H 14 15 #include "common.h" 16 #include "mps_common.h" 17 #include "mps_trace.h" 18 19 #include "mbedtls/platform.h" 20 21 #if defined(MBEDTLS_MPS_ENABLE_TRACE) 22 23 /* 24 * Adapt this to enable/disable tracing output 25 * from the various layers of the MPS. 26 */ 27 28 #define MBEDTLS_MPS_TRACE_ENABLE_LAYER_1 29 #define MBEDTLS_MPS_TRACE_ENABLE_LAYER_2 30 #define MBEDTLS_MPS_TRACE_ENABLE_LAYER_3 31 #define MBEDTLS_MPS_TRACE_ENABLE_LAYER_4 32 #define MBEDTLS_MPS_TRACE_ENABLE_READER 33 #define MBEDTLS_MPS_TRACE_ENABLE_WRITER 34 35 /* 36 * To use the existing trace module, only change 37 * MBEDTLS_MPS_TRACE_ENABLE_XXX above, but don't modify the 38 * rest of this file. 39 */ 40 41 typedef enum { 42 MBEDTLS_MPS_TRACE_TYPE_COMMENT, 43 MBEDTLS_MPS_TRACE_TYPE_CALL, 44 MBEDTLS_MPS_TRACE_TYPE_ERROR, 45 MBEDTLS_MPS_TRACE_TYPE_RETURN 46 } mbedtls_mps_trace_type; 47 48 #define MBEDTLS_MPS_TRACE_BIT_LAYER_1 1 49 #define MBEDTLS_MPS_TRACE_BIT_LAYER_2 2 50 #define MBEDTLS_MPS_TRACE_BIT_LAYER_3 3 51 #define MBEDTLS_MPS_TRACE_BIT_LAYER_4 4 52 #define MBEDTLS_MPS_TRACE_BIT_WRITER 5 53 #define MBEDTLS_MPS_TRACE_BIT_READER 6 54 55 #if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_1) 56 #define MBEDTLS_MPS_TRACE_MASK_LAYER_1 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_1) 57 #else 58 #define MBEDTLS_MPS_TRACE_MASK_LAYER_1 0 59 #endif 60 61 #if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_2) 62 #define MBEDTLS_MPS_TRACE_MASK_LAYER_2 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_2) 63 #else 64 #define MBEDTLS_MPS_TRACE_MASK_LAYER_2 0 65 #endif 66 67 #if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_3) 68 #define MBEDTLS_MPS_TRACE_MASK_LAYER_3 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_3) 69 #else 70 #define MBEDTLS_MPS_TRACE_MASK_LAYER_3 0 71 #endif 72 73 #if defined(MBEDTLS_MPS_TRACE_ENABLE_LAYER_4) 74 #define MBEDTLS_MPS_TRACE_MASK_LAYER_4 (1u << MBEDTLS_MPS_TRACE_BIT_LAYER_4) 75 #else 76 #define MBEDTLS_MPS_TRACE_MASK_LAYER_4 0 77 #endif 78 79 #if defined(MBEDTLS_MPS_TRACE_ENABLE_READER) 80 #define MBEDTLS_MPS_TRACE_MASK_READER (1u << MBEDTLS_MPS_TRACE_BIT_READER) 81 #else 82 #define MBEDTLS_MPS_TRACE_MASK_READER 0 83 #endif 84 85 #if defined(MBEDTLS_MPS_TRACE_ENABLE_WRITER) 86 #define MBEDTLS_MPS_TRACE_MASK_WRITER (1u << MBEDTLS_MPS_TRACE_BIT_WRITER) 87 #else 88 #define MBEDTLS_MPS_TRACE_MASK_WRITER 0 89 #endif 90 91 #define MBEDTLS_MPS_TRACE_MASK (MBEDTLS_MPS_TRACE_MASK_LAYER_1 | \ 92 MBEDTLS_MPS_TRACE_MASK_LAYER_2 | \ 93 MBEDTLS_MPS_TRACE_MASK_LAYER_3 | \ 94 MBEDTLS_MPS_TRACE_MASK_LAYER_4 | \ 95 MBEDTLS_MPS_TRACE_MASK_READER | \ 96 MBEDTLS_MPS_TRACE_MASK_WRITER) 97 98 /* We have to avoid globals because E-ACSL chokes on them... 99 * Wrap everything in stub functions. */ 100 int mbedtls_mps_trace_get_depth(void); 101 void mbedtls_mps_trace_inc_depth(void); 102 void mbedtls_mps_trace_dec_depth(void); 103 104 void mbedtls_mps_trace_color(int id); 105 void mbedtls_mps_trace_indent(int level, mbedtls_mps_trace_type ty); 106 107 void mbedtls_mps_trace_print_msg(int id, int line, const char *format, ...); 108 109 #define MBEDTLS_MPS_TRACE(type, ...) \ 110 do { \ 111 if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \ 112 break; \ 113 mbedtls_mps_trace_indent(mbedtls_mps_trace_get_depth(), type); \ 114 mbedtls_mps_trace_color(mbedtls_mps_trace_id); \ 115 mbedtls_mps_trace_print_msg(mbedtls_mps_trace_id, __LINE__, __VA_ARGS__); \ 116 mbedtls_mps_trace_color(0); \ 117 } while (0) 118 119 #define MBEDTLS_MPS_TRACE_INIT(...) \ 120 do { \ 121 if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \ 122 break; \ 123 MBEDTLS_MPS_TRACE(MBEDTLS_MPS_TRACE_TYPE_CALL, __VA_ARGS__); \ 124 mbedtls_mps_trace_inc_depth(); \ 125 } while (0) 126 127 #define MBEDTLS_MPS_TRACE_END(val) \ 128 do { \ 129 if (!(MBEDTLS_MPS_TRACE_MASK & (1u << mbedtls_mps_trace_id))) \ 130 break; \ 131 MBEDTLS_MPS_TRACE(MBEDTLS_MPS_TRACE_TYPE_RETURN, "%d (-%#04x)", \ 132 (int) (val), -((unsigned) (val))); \ 133 mbedtls_mps_trace_dec_depth(); \ 134 } while (0) 135 136 #define MBEDTLS_MPS_TRACE_RETURN(val) \ 137 do { \ 138 /* Breaks tail recursion. */ \ 139 int ret__ = val; \ 140 MBEDTLS_MPS_TRACE_END(ret__); \ 141 return ret__; \ 142 } while (0) 143 144 #else /* MBEDTLS_MPS_TRACE */ 145 146 #define MBEDTLS_MPS_TRACE(type, ...) do { } while (0) 147 #define MBEDTLS_MPS_TRACE_INIT(...) do { } while (0) 148 #define MBEDTLS_MPS_TRACE_END do { } while (0) 149 150 #define MBEDTLS_MPS_TRACE_RETURN(val) return val; 151 152 #endif /* MBEDTLS_MPS_TRACE */ 153 154 #endif /* MBEDTLS_MPS_MBEDTLS_MPS_TRACE_H */ 155
