| Niranjan Yadla | cee816e | 2018-04-19 12:03:47 -0700 | [diff] [blame] | 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 | |