1 /******************************************************************************* 2 * Copyright (C) 2018 Cadence Design Systems, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files (the 6 * "Software"), to use this Software with Cadence processor cores only and 7 * not with any other processors and platforms, subject to 8 * the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included 11 * in all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 14 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 15 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 16 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 17 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 18 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 19 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 20 21 ******************************************************************************/ 22 23 #ifndef __XF_H 24 #error "xf-debug.h mustn't be included directly" 25 #endif 26 27 /******************************************************************************* 28 * Auxiliary macros (put into "xf-types.h"?) 29 ******************************************************************************/ 30 31 #ifndef offset_of 32 #define offset_of(type, member) \ 33 ((int)(intptr_t)&(((const type *)(0))->member)) 34 #endif 35 36 #ifndef container_of 37 #define container_of(ptr, type, member) \ 38 ((type *)((void *)(ptr) - offset_of(type, member))) 39 #endif 40 41 /******************************************************************************* 42 * Bug check for constant conditions (file scope) 43 ******************************************************************************/ 44 45 #define __C_BUG(n) __C_BUG2(n) 46 #define __C_BUG2(n) __c_bug_##n 47 #define C_BUG(expr) typedef char __C_BUG(__LINE__)[(expr) ? -1 : 1] 48 49 /******************************************************************************* 50 * Compilation-time types control 51 ******************************************************************************/ 52 53 #if XF_DEBUG 54 #define __C_TYPE_CONTROL(d, type) ((void) ((d) != (type*) 0)) 55 #else 56 #define __C_TYPE_CONTROL(d, type) ((void) 0) 57 #endif 58 59 /******************************************************************************* 60 * Unused variable 61 ******************************************************************************/ 62 63 #define C_UNUSED(v) (void)(0 ? (v) = (v), 1 : 0) 64 65 /******************************************************************************* 66 * Auxiliary macros 67 ******************************************************************************/ 68 69 /* ...define a stub for unused declarator */ 70 #define __xf_stub(tag, line) __xf_stub2(tag, line) 71 #define __xf_stub2(tag, line) typedef int __xf_##tag##_##line 72 73 /* ...convert anything into string */ 74 #define __xf_string(x) __xf_string2(x) 75 #define __xf_string2(x) #x 76 77 /******************************************************************************* 78 * Tracing facility 79 ******************************************************************************/ 80 81 #if XF_TRACE 82 83 /* ...tracing to communication processor */ 84 extern int xf_trace(const char *format, ...); 85 86 /* ...tracing facility initialization */ 87 extern void xf_trace_init(const char *banner); 88 89 /* ...initialize tracing facility */ 90 #define TRACE_INIT(banner) (xf_trace_init(banner)) 91 92 /* ...trace tag definition */ 93 #define TRACE_TAG(tag, on) enum { __xf_trace_##tag = on } 94 95 /* ...check if the trace tag is enabled */ 96 #define TRACE_CFG(tag) (__xf_trace_##tag) 97 98 /* ...tagged tracing primitive */ 99 #define TRACE(tag, fmt, ...) (void)(__xf_trace_##tag ? __xf_trace(tag, __xf_format##fmt, ## __VA_ARGS__), 1 : 0) 100 101 /******************************************************************************* 102 * Tagged tracing formats 103 ******************************************************************************/ 104 105 /* ...tracing primitive */ 106 #define __xf_trace(tag, fmt, ...) \ 107 ({ __attribute__((unused)) const char *__xf_tag = #tag; xf_trace(fmt, ## __VA_ARGS__); }) 108 109 /* ...just a format string */ 110 #define __xf_format_n(fmt) fmt 111 112 /* ...module tag and trace tag shown */ 113 #define __xf_format_b(fmt) "[%s.%s] " fmt, __xf_string(MODULE_TAG), __xf_tag 114 115 /* ...module tag, trace tag, file name and line shown */ 116 #define __xf_format_x(fmt) "[%s.%s] - %s@%d - " fmt, __xf_string(MODULE_TAG), __xf_tag, __FILE__, __LINE__ 117 118 /******************************************************************************* 119 * Globally defined tags 120 ******************************************************************************/ 121 122 /* ...unconditionally OFF */ 123 TRACE_TAG(0, 0); 124 125 /* ...unconditionally ON */ 126 TRACE_TAG(1, 1); 127 128 /* ...error output - on by default */ 129 TRACE_TAG(ERROR, 1); 130 131 #else 132 133 #define TRACE_INIT(banner) (void)0 134 #define TRACE_TAG(tag, on) __xf_stub(trace_##tag, __LINE__) 135 #define TRACE(tag, fmt, ...) (void)0 136 #define __xf_trace(tag, fmt, ...) (void)0 137 138 #endif /* XF_TRACE */ 139 140 /******************************************************************************* 141 * Bugchecks 142 ******************************************************************************/ 143 144 #if XF_DEBUG 145 146 /* ...run-time bugcheck */ 147 #define BUG(cond, fmt, ...) \ 148 do \ 149 { \ 150 if (cond) \ 151 { \ 152 /* ...output message */ \ 153 __xf_trace(BUG, __xf_format##fmt, ## __VA_ARGS__); \ 154 \ 155 /* ...and die */ \ 156 abort(); \ 157 } \ 158 } \ 159 while (0) 160 161 #else 162 #define BUG(cond, fmt, ...) (void)0 163 #endif /* XF_DEBUG */ 164 165 /******************************************************************************* 166 * Run-time error processing 167 ******************************************************************************/ 168 169 /* ...check the API call succeeds */ 170 #define XF_CHK_API(cond) \ 171 ({ \ 172 int __ret; \ 173 \ 174 if ((__ret = (int)(cond)) < 0) \ 175 { \ 176 TRACE(ERROR, _x("API error: %d"), __ret); \ 177 return __ret; \ 178 } \ 179 __ret; \ 180 }) 181 182 /* ...check the condition is true */ 183 #define XF_CHK_ERR(cond, error) \ 184 ({ \ 185 intptr_t __ret; \ 186 \ 187 if (!(__ret = (intptr_t)(cond))) \ 188 { \ 189 TRACE(ERROR, _x("check failed")); \ 190 return (error); \ 191 } \ 192 (int)__ret; \ 193 }) 194 195
