include/side/trace.h

   1 // SPDX-License-Identifier: MIT
   2 /*
   3  * Copyright 2022 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  */
   5
   6 #ifndef _SIDE_TRACE_H
   7 #define _SIDE_TRACE_H
   8
   9 #include <stdint.h>
  10 #include <inttypes.h>
  11 #include <stdlib.h>
  12 #include <stdio.h>
  13 #include <math.h>
  14 #include <side/macros.h>
  15 #include <side/endian.h>
  16
  17 /* SIDE stands for "Static Instrumentation Dynamically Enabled" */
  18
  19 //TODO: as those structures will be ABI, we need to either consider them
  20 //fixed forever, or think of a scheme that would allow their binary
  21 //representation to be extended if need be.
  22
  23 struct side_arg_vec;
  24 struct side_arg_vec_description;
  25 struct side_arg_dynamic_vec;
  26 struct side_arg_dynamic_vec_vla;
  27 struct side_type_description;
  28 struct side_event_field;
  29 struct side_tracer_visitor_ctx;
  30 struct side_tracer_dynamic_struct_visitor_ctx;
  31 struct side_tracer_dynamic_vla_visitor_ctx;
  32 struct side_event_description;
  33 struct side_arg_dynamic_event_struct;
  34 struct side_events_register_handle;
  35
  36 enum side_type {
  37         /* Basic types */
  38         SIDE_TYPE_BOOL,
  39         SIDE_TYPE_U8,
  40         SIDE_TYPE_U16,
  41         SIDE_TYPE_U32,
  42         SIDE_TYPE_U64,
  43         SIDE_TYPE_S8,
  44         SIDE_TYPE_S16,
  45         SIDE_TYPE_S32,
  46         SIDE_TYPE_S64,
  47         SIDE_TYPE_BYTE,
  48         SIDE_TYPE_FLOAT_BINARY16,
  49         SIDE_TYPE_FLOAT_BINARY32,
  50         SIDE_TYPE_FLOAT_BINARY64,
  51         SIDE_TYPE_FLOAT_BINARY128,
  52         SIDE_TYPE_STRING,
  53
  54         /* Compound types */
  55         SIDE_TYPE_STRUCT,
  56         SIDE_TYPE_ARRAY,
  57         SIDE_TYPE_VLA,
  58         SIDE_TYPE_VLA_VISITOR,
  59
  60         SIDE_TYPE_ARRAY_U8,
  61         SIDE_TYPE_ARRAY_U16,
  62         SIDE_TYPE_ARRAY_U32,
  63         SIDE_TYPE_ARRAY_U64,
  64         SIDE_TYPE_ARRAY_S8,
  65         SIDE_TYPE_ARRAY_S16,
  66         SIDE_TYPE_ARRAY_S32,
  67         SIDE_TYPE_ARRAY_S64,
  68         SIDE_TYPE_ARRAY_BYTE,
  69
  70         SIDE_TYPE_VLA_U8,
  71         SIDE_TYPE_VLA_U16,
  72         SIDE_TYPE_VLA_U32,
  73         SIDE_TYPE_VLA_U64,
  74         SIDE_TYPE_VLA_S8,
  75         SIDE_TYPE_VLA_S16,
  76         SIDE_TYPE_VLA_S32,
  77         SIDE_TYPE_VLA_S64,
  78         SIDE_TYPE_VLA_BYTE,
  79
  80         /* Enumeration types */
  81         SIDE_TYPE_ENUM,
  82         SIDE_TYPE_ENUM_BITMAP,
  83
  84         /* Dynamic type */
  85         SIDE_TYPE_DYNAMIC,
  86 };
  87
  88 enum side_dynamic_type {
  89         /* Basic types */
  90         SIDE_DYNAMIC_TYPE_NULL,
  91         SIDE_DYNAMIC_TYPE_BOOL,
  92         SIDE_DYNAMIC_TYPE_U8,
  93         SIDE_DYNAMIC_TYPE_U16,
  94         SIDE_DYNAMIC_TYPE_U32,
  95         SIDE_DYNAMIC_TYPE_U64,
  96         SIDE_DYNAMIC_TYPE_S8,
  97         SIDE_DYNAMIC_TYPE_S16,
  98         SIDE_DYNAMIC_TYPE_S32,
  99         SIDE_DYNAMIC_TYPE_S64,
 100         SIDE_DYNAMIC_TYPE_BYTE,
 101         SIDE_DYNAMIC_TYPE_FLOAT_BINARY16,
 102         SIDE_DYNAMIC_TYPE_FLOAT_BINARY32,
 103         SIDE_DYNAMIC_TYPE_FLOAT_BINARY64,
 104         SIDE_DYNAMIC_TYPE_FLOAT_BINARY128,
 105         SIDE_DYNAMIC_TYPE_STRING,
 106
 107         /* Compound types */
 108         SIDE_DYNAMIC_TYPE_STRUCT,
 109         SIDE_DYNAMIC_TYPE_STRUCT_VISITOR,
 110         SIDE_DYNAMIC_TYPE_VLA,
 111         SIDE_DYNAMIC_TYPE_VLA_VISITOR,
 112 };
 113
 114 enum side_attr_type {
 115         SIDE_ATTR_TYPE_NULL,
 116         SIDE_ATTR_TYPE_BOOL,
 117         SIDE_ATTR_TYPE_U8,
 118         SIDE_ATTR_TYPE_U16,
 119         SIDE_ATTR_TYPE_U32,
 120         SIDE_ATTR_TYPE_U64,
 121         SIDE_ATTR_TYPE_S8,
 122         SIDE_ATTR_TYPE_S16,
 123         SIDE_ATTR_TYPE_S32,
 124         SIDE_ATTR_TYPE_S64,
 125         SIDE_ATTR_TYPE_FLOAT_BINARY16,
 126         SIDE_ATTR_TYPE_FLOAT_BINARY32,
 127         SIDE_ATTR_TYPE_FLOAT_BINARY64,
 128         SIDE_ATTR_TYPE_FLOAT_BINARY128,
 129         SIDE_ATTR_TYPE_STRING,
 130 };
 131
 132 enum side_loglevel {
 133         SIDE_LOGLEVEL_EMERG = 0,
 134         SIDE_LOGLEVEL_ALERT = 1,
 135         SIDE_LOGLEVEL_CRIT = 2,
 136         SIDE_LOGLEVEL_ERR = 3,
 137         SIDE_LOGLEVEL_WARNING = 4,
 138         SIDE_LOGLEVEL_NOTICE = 5,
 139         SIDE_LOGLEVEL_INFO = 6,
 140         SIDE_LOGLEVEL_DEBUG = 7,
 141 };
 142
 143 enum side_visitor_status {
 144         SIDE_VISITOR_STATUS_OK = 0,
 145         SIDE_VISITOR_STATUS_ERROR = -1,
 146 };
 147
 148 enum side_error {
 149         SIDE_ERROR_OK = 0,
 150         SIDE_ERROR_INVAL = 1,
 151         SIDE_ERROR_EXIST = 2,
 152         SIDE_ERROR_NOMEM = 3,
 153         SIDE_ERROR_NOENT = 4,
 154         SIDE_ERROR_EXITING = 5,
 155 };
 156
 157 enum side_type_byte_order {
 158         SIDE_TYPE_BYTE_ORDER_LE = 0,
 159         SIDE_TYPE_BYTE_ORDER_BE = 1,
 160 };
 161
 162 #if (SIDE_BYTE_ORDER == SIDE_LITTLE_ENDIAN)
 163 # define SIDE_TYPE_BYTE_ORDER_HOST              SIDE_TYPE_BYTE_ORDER_LE
 164 #else
 165 # define SIDE_TYPE_BYTE_ORDER_HOST              SIDE_TYPE_BYTE_ORDER_BE
 166 #endif
 167
 168 #if (SIDE_FLOAT_WORD_ORDER == SIDE_LITTLE_ENDIAN)
 169 # define SIDE_TYPE_FLOAT_WORD_ORDER_HOST        SIDE_TYPE_BYTE_ORDER_LE
 170 #else
 171 # define SIDE_TYPE_FLOAT_WORD_ORDER_HOST        SIDE_TYPE_BYTE_ORDER_BE
 172 #endif
 173
 174 typedef enum side_visitor_status (*side_visitor)(
 175                 const struct side_tracer_visitor_ctx *tracer_ctx,
 176                 void *app_ctx);
 177 typedef enum side_visitor_status (*side_dynamic_struct_visitor)(
 178                 const struct side_tracer_dynamic_struct_visitor_ctx *tracer_ctx,
 179                 void *app_ctx);
 180 typedef enum side_visitor_status (*side_dynamic_vla_visitor)(
 181                 const struct side_tracer_dynamic_vla_visitor_ctx *tracer_ctx,
 182                 void *app_ctx);
 183
 184 struct side_attr_value {
 185         uint32_t type;  /* enum side_attr_type */
 186         union {
 187                 uint8_t side_bool;
 188                 uint8_t side_u8;
 189                 uint16_t side_u16;
 190                 uint32_t side_u32;
 191                 uint64_t side_u64;
 192                 int8_t side_s8;
 193                 int16_t side_s16;
 194                 int32_t side_s32;
 195                 int64_t side_s64;
 196 #if __HAVE_FLOAT16
 197                 _Float16 side_float_binary16;
 198 #endif
 199 #if __HAVE_FLOAT32
 200                 _Float32 side_float_binary32;
 201 #endif
 202 #if __HAVE_FLOAT64
 203                 _Float64 side_float_binary64;
 204 #endif
 205 #if __HAVE_FLOAT128
 206                 _Float128 side_float_binary128;
 207 #endif
 208                 const char *string;
 209         } u;
 210 };
 211
 212 /* User attributes. */
 213 struct side_attr {
 214         const char *key;
 215         const struct side_attr_value value;
 216 };
 217
 218 struct side_enum_mapping {
 219         int64_t range_begin;
 220         int64_t range_end;
 221         const char *label;
 222 };
 223
 224 struct side_enum_mappings {
 225         const struct side_enum_mapping *mappings;
 226         const struct side_attr *attr;
 227         uint32_t nr_mappings;
 228         uint32_t nr_attr;
 229 };
 230
 231 struct side_enum_bitmap_mapping {
 232         uint64_t range_begin;
 233         uint64_t range_end;
 234         const char *label;
 235 };
 236
 237 struct side_enum_bitmap_mappings {
 238         const struct side_enum_bitmap_mapping *mappings;
 239         const struct side_attr *attr;
 240         uint32_t nr_mappings;
 241         uint32_t nr_attr;
 242 };
 243
 244 struct side_type_struct {
 245         uint32_t nr_fields;
 246         uint32_t nr_attr;
 247         const struct side_event_field *fields;
 248         const struct side_attr *attr;
 249 };
 250
 251 struct side_type_description {
 252         uint32_t type;  /* enum side_type */
 253         union {
 254                 /* Basic types */
 255                 struct {
 256                         const struct side_attr *attr;
 257                         uint32_t nr_attr;
 258                         uint32_t byte_order;    /* enum side_type_byte_order */
 259                 } side_basic;
 260
 261                 /* Compound types */
 262                 struct {
 263                         const struct side_type_description *elem_type;
 264                         const struct side_attr *attr;
 265                         uint32_t length;
 266                         uint32_t nr_attr;
 267                 } side_array;
 268                 struct {
 269                         const struct side_type_description *elem_type;
 270                         const struct side_attr *attr;
 271                         uint32_t nr_attr;
 272                 } side_vla;
 273                 struct {
 274                         const struct side_type_description *elem_type;
 275                         side_visitor visitor;
 276                         const struct side_attr *attr;
 277                         uint32_t nr_attr;
 278                 } side_vla_visitor;
 279                 const struct side_type_struct *side_struct;
 280
 281                 /* Enumeration types */
 282                 struct {
 283                         const struct side_enum_mappings *mappings;
 284                         const struct side_type_description *elem_type;
 285                 } side_enum;
 286                 struct {
 287                         const struct side_enum_bitmap_mappings *mappings;
 288                         const struct side_type_description *elem_type;
 289                 } side_enum_bitmap;
 290         } u;
 291 };
 292
 293 struct side_event_field {
 294         const char *field_name;
 295         struct side_type_description side_type;
 296 };
 297
 298 enum side_event_flags {
 299         SIDE_EVENT_FLAG_VARIADIC = (1 << 0),
 300 };
 301
 302 struct side_callback {
 303         union {
 304                 void (*call)(const struct side_event_description *desc,
 305                         const struct side_arg_vec_description *sav_desc,
 306                         void *priv);
 307                 void (*call_variadic)(const struct side_event_description *desc,
 308                         const struct side_arg_vec_description *sav_desc,
 309                         const struct side_arg_dynamic_event_struct *var_struct,
 310                         void *priv);
 311         } u;
 312         void *priv;
 313 };
 314
 315 struct side_event_description {
 316         uintptr_t *enabled;
 317         const char *provider_name;
 318         const char *event_name;
 319         const struct side_event_field *fields;
 320         const struct side_attr *attr;
 321         const struct side_callback *callbacks;
 322         uint64_t flags;
 323         uint32_t version;
 324         uint32_t loglevel;      /* enum side_loglevel */
 325         uint32_t nr_fields;
 326         uint32_t nr_attr;
 327         uint32_t nr_callbacks;
 328 };
 329
 330 struct side_arg_dynamic_vec {
 331         uint32_t dynamic_type;  /* enum side_dynamic_type */
 332         union {
 333                 /* Basic types */
 334                 struct {
 335                         const struct side_attr *attr;
 336                         uint32_t nr_attr;
 337                         uint32_t byte_order;    /* enum side_type_byte_order */
 338                         union {
 339                                 uint8_t side_bool;
 340                                 uint8_t side_u8;
 341                                 uint16_t side_u16;
 342                                 uint32_t side_u32;
 343                                 uint64_t side_u64;
 344                                 int8_t side_s8;
 345                                 int16_t side_s16;
 346                                 int32_t side_s32;
 347                                 int64_t side_s64;
 348                                 uint8_t side_byte;
 349 #if __HAVE_FLOAT16
 350                                 _Float16 side_float_binary16;
 351 #endif
 352 #if __HAVE_FLOAT32
 353                                 _Float32 side_float_binary32;
 354 #endif
 355 #if __HAVE_FLOAT64
 356                                 _Float64 side_float_binary64;
 357 #endif
 358 #if __HAVE_FLOAT128
 359                                 _Float128 side_float_binary128;
 360 #endif
 361                                 const char *string;
 362                         } u;
 363                 } side_basic;
 364
 365                 /* Compound types */
 366                 const struct side_arg_dynamic_event_struct *side_dynamic_struct;
 367                 struct {
 368                         void *app_ctx;
 369                         side_dynamic_struct_visitor visitor;
 370                         const struct side_attr *attr;
 371                         uint32_t nr_attr;
 372                 } side_dynamic_struct_visitor;
 373                 const struct side_arg_dynamic_vec_vla *side_dynamic_vla;
 374                 struct {
 375                         void *app_ctx;
 376                         side_dynamic_vla_visitor visitor;
 377                         const struct side_attr *attr;
 378                         uint32_t nr_attr;
 379                 } side_dynamic_vla_visitor;
 380         } u;
 381 };
 382
 383 struct side_arg_dynamic_vec_vla {
 384         const struct side_arg_dynamic_vec *sav;
 385         const struct side_attr *attr;
 386         uint32_t len;
 387         uint32_t nr_attr;
 388 };
 389
 390 struct side_arg_dynamic_event_field {
 391         const char *field_name;
 392         const struct side_arg_dynamic_vec elem;
 393 };
 394
 395 struct side_arg_dynamic_event_struct {
 396         const struct side_arg_dynamic_event_field *fields;
 397         const struct side_attr *attr;
 398         uint32_t len;
 399         uint32_t nr_attr;
 400 };
 401
 402 struct side_arg_vec {
 403         enum side_type type;
 404         union {
 405                 /* Basic types */
 406                 uint8_t side_bool;
 407                 uint8_t side_u8;
 408                 uint16_t side_u16;
 409                 uint32_t side_u32;
 410                 uint64_t side_u64;
 411                 int8_t side_s8;
 412                 int16_t side_s16;
 413                 int32_t side_s32;
 414                 int64_t side_s64;
 415                 uint8_t side_byte;
 416 #if __HAVE_FLOAT16
 417                 _Float16 side_float_binary16;
 418 #endif
 419 #if __HAVE_FLOAT32
 420                 _Float32 side_float_binary32;
 421 #endif
 422 #if __HAVE_FLOAT64
 423                 _Float64 side_float_binary64;
 424 #endif
 425 #if __HAVE_FLOAT128
 426                 _Float128 side_float_binary128;
 427 #endif
 428                 const char *string;
 429
 430                 /* Compound types */
 431                 const struct side_arg_vec_description *side_struct;
 432                 const struct side_arg_vec_description *side_array;
 433                 const struct side_arg_vec_description *side_vla;
 434                 void *side_vla_app_visitor_ctx;
 435                 void *side_array_fixint;
 436                 struct {
 437                         void *p;
 438                         uint32_t length;
 439                 } side_vla_fixint;
 440
 441                 /* Dynamic type */
 442                 struct side_arg_dynamic_vec dynamic;
 443         } u;
 444 };
 445
 446 struct side_arg_vec_description {
 447         const struct side_arg_vec *sav;
 448         uint32_t len;
 449 };
 450
 451 /* The visitor pattern is a double-dispatch visitor. */
 452 struct side_tracer_visitor_ctx {
 453         enum side_visitor_status (*write_elem)(
 454                         const struct side_tracer_visitor_ctx *tracer_ctx,
 455                         const struct side_arg_vec *elem);
 456         void *priv;             /* Private tracer context. */
 457 };
 458
 459 struct side_tracer_dynamic_struct_visitor_ctx {
 460         enum side_visitor_status (*write_field)(
 461                         const struct side_tracer_dynamic_struct_visitor_ctx *tracer_ctx,
 462                         const struct side_arg_dynamic_event_field *dynamic_field);
 463         void *priv;             /* Private tracer context. */
 464 };
 465
 466 struct side_tracer_dynamic_vla_visitor_ctx {
 467         enum side_visitor_status (*write_elem)(
 468                         const struct side_tracer_dynamic_vla_visitor_ctx *tracer_ctx,
 469                         const struct side_arg_dynamic_vec *elem);
 470         void *priv;             /* Private tracer context. */
 471 };
 472
 473 /* Event and type attributes */
 474
 475 #define side_attr(_key, _value) \
 476         { \
 477                 .key = _key, \
 478                 .value = SIDE_PARAM(_value), \
 479         }
 480
 481 #define side_attr_list(...) \
 482         SIDE_COMPOUND_LITERAL(const struct side_attr, __VA_ARGS__)
 483
 484 #define side_attr_null(_val)            { .type = SIDE_ATTR_TYPE_NULL }
 485 #define side_attr_bool(_val)            { .type = SIDE_ATTR_TYPE_BOOL, .u = { .side_bool = !!(_val) } }
 486 #define side_attr_u8(_val)              { .type = SIDE_ATTR_TYPE_U8, .u = { .side_u8 = (_val) } }
 487 #define side_attr_u16(_val)             { .type = SIDE_ATTR_TYPE_U16, .u = { .side_u16 = (_val) } }
 488 #define side_attr_u32(_val)             { .type = SIDE_ATTR_TYPE_U32, .u = { .side_u32 = (_val) } }
 489 #define side_attr_u64(_val)             { .type = SIDE_ATTR_TYPE_U64, .u = { .side_u64 = (_val) } }
 490 #define side_attr_s8(_val)              { .type = SIDE_ATTR_TYPE_S8, .u = { .side_s8 = (_val) } }
 491 #define side_attr_s16(_val)             { .type = SIDE_ATTR_TYPE_S16, .u = { .side_s16 = (_val) } }
 492 #define side_attr_s32(_val)             { .type = SIDE_ATTR_TYPE_S32, .u = { .side_s32 = (_val) } }
 493 #define side_attr_s64(_val)             { .type = SIDE_ATTR_TYPE_S64, .u = { .side_s64 = (_val) } }
 494 #define side_attr_float_binary16(_val)  { .type = SIDE_ATTR_TYPE_FLOAT_BINARY16, .u = { .side_float_binary16 = (_val) } }
 495 #define side_attr_float_binary32(_val)  { .type = SIDE_ATTR_TYPE_FLOAT_BINARY32, .u = { .side_float_binary32 = (_val) } }
 496 #define side_attr_float_binary64(_val)  { .type = SIDE_ATTR_TYPE_FLOAT_BINARY64, .u = { .side_float_binary64 = (_val) } }
 497 #define side_attr_float_binary128(_val) { .type = SIDE_ATTR_TYPE_FLOAT_BINARY128, .u = { .side_float_binary128 = (_val) } }
 498 #define side_attr_string(_val)          { .type = SIDE_ATTR_TYPE_STRING, .u = { .string = (_val) } }
 499
 500 /* Static field definition */
 501
 502 #define _side_type_basic(_type, _byte_order, _attr) \
 503         { \
 504                 .type = _type, \
 505                 .u = { \
 506                         .side_basic = { \
 507                                 .attr = _attr, \
 508                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 509                                 .byte_order = _byte_order, \
 510                         }, \
 511                 }, \
 512         }
 513
 514 #define _side_field(_name, _type) \
 515         { \
 516                 .field_name = _name, \
 517                 .side_type = _type, \
 518         }
 519
 520 /* Host endian */
 521 #define side_type_bool(_attr)                           _side_type_basic(SIDE_TYPE_BOOL, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 522 #define side_type_u8(_attr)                             _side_type_basic(SIDE_TYPE_U8, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 523 #define side_type_u16(_attr)                            _side_type_basic(SIDE_TYPE_U16, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 524 #define side_type_u32(_attr)                            _side_type_basic(SIDE_TYPE_U32, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 525 #define side_type_u64(_attr)                            _side_type_basic(SIDE_TYPE_U64, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 526 #define side_type_s8(_attr)                             _side_type_basic(SIDE_TYPE_S8, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 527 #define side_type_s16(_attr)                            _side_type_basic(SIDE_TYPE_S16, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 528 #define side_type_s32(_attr)                            _side_type_basic(SIDE_TYPE_S32, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 529 #define side_type_s64(_attr)                            _side_type_basic(SIDE_TYPE_S64, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 530 #define side_type_byte(_attr)                           _side_type_basic(SIDE_TYPE_BYTE, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 531 #define side_type_float_binary16(_attr)                 _side_type_basic(SIDE_TYPE_FLOAT_BINARY16, SIDE_TYPE_FLOAT_WORD_ORDER_HOST, SIDE_PARAM(_attr))
 532 #define side_type_float_binary32(_attr)                 _side_type_basic(SIDE_TYPE_FLOAT_BINARY32, SIDE_TYPE_FLOAT_WORD_ORDER_HOST, SIDE_PARAM(_attr))
 533 #define side_type_float_binary64(_attr)                 _side_type_basic(SIDE_TYPE_FLOAT_BINARY64, SIDE_TYPE_FLOAT_WORD_ORDER_HOST, SIDE_PARAM(_attr))
 534 #define side_type_float_binary128(_attr)                _side_type_basic(SIDE_TYPE_FLOAT_BINARY128, SIDE_TYPE_FLOAT_WORD_ORDER_HOST, SIDE_PARAM(_attr))
 535 #define side_type_string(_attr)                         _side_type_basic(SIDE_TYPE_STRING, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 536 #define side_type_dynamic(_attr)                        _side_type_basic(SIDE_TYPE_DYNAMIC, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 537
 538 #define side_field_bool(_name, _attr)                   _side_field(_name, side_type_bool(SIDE_PARAM(_attr)))
 539 #define side_field_u8(_name, _attr)                     _side_field(_name, side_type_u8(SIDE_PARAM(_attr)))
 540 #define side_field_u16(_name, _attr)                    _side_field(_name, side_type_u16(SIDE_PARAM(_attr)))
 541 #define side_field_u32(_name, _attr)                    _side_field(_name, side_type_u32(SIDE_PARAM(_attr)))
 542 #define side_field_u64(_name, _attr)                    _side_field(_name, side_type_u64(SIDE_PARAM(_attr)))
 543 #define side_field_s8(_name, _attr)                     _side_field(_name, side_type_s8(SIDE_PARAM(_attr)))
 544 #define side_field_s16(_name, _attr)                    _side_field(_name, side_type_s16(SIDE_PARAM(_attr)))
 545 #define side_field_s32(_name, _attr)                    _side_field(_name, side_type_s32(SIDE_PARAM(_attr)))
 546 #define side_field_s64(_name, _attr)                    _side_field(_name, side_type_s64(SIDE_PARAM(_attr)))
 547 #define side_field_byte(_name, _attr)                   _side_field(_name, side_type_byte(SIDE_PARAM(_attr)))
 548 #define side_field_float_binary16(_name, _attr)         _side_field(_name, side_type_float_binary16(SIDE_PARAM(_attr)))
 549 #define side_field_float_binary32(_name, _attr)         _side_field(_name, side_type_float_binary32(SIDE_PARAM(_attr)))
 550 #define side_field_float_binary64(_name, _attr)         _side_field(_name, side_type_float_binary64(SIDE_PARAM(_attr)))
 551 #define side_field_float_binary128(_name, _attr)        _side_field(_name, side_type_float_binary128(SIDE_PARAM(_attr)))
 552 #define side_field_string(_name, _attr)                 _side_field(_name, side_type_string(SIDE_PARAM(_attr)))
 553 #define side_field_dynamic(_name, _attr)                _side_field(_name, side_type_dynamic(SIDE_PARAM(_attr)))
 554
 555 /* Little endian */
 556 #define side_type_u16_le(_attr)                         _side_type_basic(SIDE_TYPE_U16, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 557 #define side_type_u32_le(_attr)                         _side_type_basic(SIDE_TYPE_U32, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 558 #define side_type_u64_le(_attr)                         _side_type_basic(SIDE_TYPE_U64, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 559 #define side_type_s16_le(_attr)                         _side_type_basic(SIDE_TYPE_S16, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 560 #define side_type_s32_le(_attr)                         _side_type_basic(SIDE_TYPE_S32, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 561 #define side_type_s64_le(_attr)                         _side_type_basic(SIDE_TYPE_S64, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 562 #define side_type_float_binary16_le(_attr)              _side_type_basic(SIDE_TYPE_FLOAT_BINARY16, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 563 #define side_type_float_binary32_le(_attr)              _side_type_basic(SIDE_TYPE_FLOAT_BINARY32, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 564 #define side_type_float_binary64_le(_attr)              _side_type_basic(SIDE_TYPE_FLOAT_BINARY64, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 565 #define side_type_float_binary128_le(_attr)             _side_type_basic(SIDE_TYPE_FLOAT_BINARY128, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
 566
 567 #define side_field_u16_le(_name, _attr)                 _side_field(_name, side_type_u16_le(SIDE_PARAM(_attr)))
 568 #define side_field_u32_le(_name, _attr)                 _side_field(_name, side_type_u32_le(SIDE_PARAM(_attr)))
 569 #define side_field_u64_le(_name, _attr)                 _side_field(_name, side_type_u64_le(SIDE_PARAM(_attr)))
 570 #define side_field_s16_le(_name, _attr)                 _side_field(_name, side_type_s16_le(SIDE_PARAM(_attr)))
 571 #define side_field_s32_le(_name, _attr)                 _side_field(_name, side_type_s32_le(SIDE_PARAM(_attr)))
 572 #define side_field_s64_le(_name, _attr)                 _side_field(_name, side_type_s64_le(SIDE_PARAM(_attr)))
 573 #define side_field_float_binary16_le(_name, _attr)      _side_field(_name, side_type_float_binary16_le(SIDE_PARAM(_attr)))
 574 #define side_field_float_binary32_le(_name, _attr)      _side_field(_name, side_type_float_binary32_le(SIDE_PARAM(_attr)))
 575 #define side_field_float_binary64_le(_name, _attr)      _side_field(_name, side_type_float_binary64_le(SIDE_PARAM(_attr)))
 576 #define side_field_float_binary128_le(_name, _attr)     _side_field(_name, side_type_float_binary128_le(SIDE_PARAM(_attr)))
 577
 578 /* Big endian */
 579 #define side_type_u16_be(_attr)                         _side_type_basic(SIDE_TYPE_U16, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 580 #define side_type_u32_be(_attr)                         _side_type_basic(SIDE_TYPE_U32, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 581 #define side_type_u64_be(_attr)                         _side_type_basic(SIDE_TYPE_U64, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 582 #define side_type_s16_be(_attr)                         _side_type_basic(SIDE_TYPE_S16, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 583 #define side_type_s32_be(_attr)                         _side_type_basic(SIDE_TYPE_S32, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 584 #define side_type_s64_be(_attr)                         _side_type_basic(SIDE_TYPE_S64, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 585 #define side_type_float_binary16_be(_attr)              _side_type_basic(SIDE_TYPE_FLOAT_BINARY16, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 586 #define side_type_float_binary32_be(_attr)              _side_type_basic(SIDE_TYPE_FLOAT_BINARY32, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 587 #define side_type_float_binary64_be(_attr)              _side_type_basic(SIDE_TYPE_FLOAT_BINARY64, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 588 #define side_type_float_binary128_be(_attr)             _side_type_basic(SIDE_TYPE_FLOAT_BINARY128, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
 589
 590 #define side_field_u16_be(_name, _attr)                 _side_field(_name, side_type_u16_be(SIDE_PARAM(_attr)))
 591 #define side_field_u32_be(_name, _attr)                 _side_field(_name, side_type_u32_be(SIDE_PARAM(_attr)))
 592 #define side_field_u64_be(_name, _attr)                 _side_field(_name, side_type_u64_be(SIDE_PARAM(_attr)))
 593 #define side_field_s16_be(_name, _attr)                 _side_field(_name, side_type_s16_be(SIDE_PARAM(_attr)))
 594 #define side_field_s32_be(_name, _attr)                 _side_field(_name, side_type_s32_be(SIDE_PARAM(_attr)))
 595 #define side_field_s64_be(_name, _attr)                 _side_field(_name, side_type_s64_be(SIDE_PARAM(_attr)))
 596 #define side_field_float_binary16_be(_name, _attr)      _side_field(_name, side_type_float_binary16_be(SIDE_PARAM(_attr)))
 597 #define side_field_float_binary32_be(_name, _attr)      _side_field(_name, side_type_float_binary32_be(SIDE_PARAM(_attr)))
 598 #define side_field_float_binary64_be(_name, _attr)      _side_field(_name, side_type_float_binary64_be(SIDE_PARAM(_attr)))
 599 #define side_field_float_binary128_be(_name, _attr)     _side_field(_name, side_type_float_binary128_be(SIDE_PARAM(_attr)))
 600
 601 #define side_type_enum(_mappings, _elem_type) \
 602         { \
 603                 .type = SIDE_TYPE_ENUM, \
 604                 .u = { \
 605                         .side_enum = { \
 606                                 .mappings = _mappings, \
 607                                 .elem_type = _elem_type, \
 608                         }, \
 609                 }, \
 610         }
 611 #define side_field_enum(_name, _mappings, _elem_type) \
 612         _side_field(_name, side_type_enum(SIDE_PARAM(_mappings), SIDE_PARAM(_elem_type)))
 613
 614 #define side_type_enum_bitmap(_mappings, _elem_type) \
 615         { \
 616                 .type = SIDE_TYPE_ENUM_BITMAP, \
 617                 .u = { \
 618                         .side_enum_bitmap = { \
 619                                 .mappings = _mappings, \
 620                                 .elem_type = _elem_type, \
 621                         }, \
 622                 }, \
 623         }
 624 #define side_field_enum_bitmap(_name, _mappings, _elem_type) \
 625         _side_field(_name, side_type_enum_bitmap(SIDE_PARAM(_mappings), SIDE_PARAM(_elem_type)))
 626
 627 #define side_type_struct(_struct) \
 628         { \
 629                 .type = SIDE_TYPE_STRUCT, \
 630                 .u = { \
 631                         .side_struct = _struct, \
 632                 }, \
 633         }
 634 #define side_field_struct(_name, _struct) \
 635         _side_field(_name, side_type_struct(SIDE_PARAM(_struct)))
 636
 637 #define _side_type_struct_define(_fields, _attr) \
 638         { \
 639                 .nr_fields = SIDE_ARRAY_SIZE(SIDE_PARAM(_fields)), \
 640                 .nr_attr  = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 641                 .fields = _fields, \
 642                 .attr = _attr, \
 643         }
 644
 645 #define side_define_struct(_identifier, _fields, _attr) \
 646         const struct side_type_struct _identifier = _side_type_struct_define(SIDE_PARAM(_fields), SIDE_PARAM(_attr))
 647
 648 #define side_struct_literal(_fields, _attr) \
 649         SIDE_COMPOUND_LITERAL(const struct side_type_struct, \
 650                 _side_type_struct_define(SIDE_PARAM(_fields), SIDE_PARAM(_attr)))
 651
 652 #define side_type_array(_elem_type, _length, _attr) \
 653         { \
 654                 .type = SIDE_TYPE_ARRAY, \
 655                 .u = { \
 656                         .side_array = { \
 657                                 .elem_type = _elem_type, \
 658                                 .attr = _attr, \
 659                                 .length = _length, \
 660                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 661                         }, \
 662                 }, \
 663         }
 664 #define side_field_array(_name, _elem_type, _length, _attr) \
 665         _side_field(_name, side_type_array(SIDE_PARAM(_elem_type), _length, SIDE_PARAM(_attr)))
 666
 667 #define side_type_vla(_elem_type, _attr) \
 668         { \
 669                 .type = SIDE_TYPE_VLA, \
 670                 .u = { \
 671                         .side_vla = { \
 672                                 .elem_type = _elem_type, \
 673                                 .attr = _attr, \
 674                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 675                         }, \
 676                 }, \
 677         }
 678 #define side_field_vla(_name, _elem_type, _attr) \
 679         _side_field(_name, side_type_vla(SIDE_PARAM(_elem_type), SIDE_PARAM(_attr)))
 680
 681 #define side_type_vla_visitor(_elem_type, _visitor, _attr) \
 682         { \
 683                 .type = SIDE_TYPE_VLA_VISITOR, \
 684                 .u = { \
 685                         .side_vla_visitor = { \
 686                                 .elem_type = SIDE_PARAM(_elem_type), \
 687                                 .visitor = _visitor, \
 688                                 .attr = _attr, \
 689                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 690                         }, \
 691                 }, \
 692         }
 693 #define side_field_vla_visitor(_name, _elem_type, _visitor, _attr) \
 694         _side_field(_name, side_type_vla_visitor(SIDE_PARAM(_elem_type), _visitor, SIDE_PARAM(_attr)))
 695
 696 #define side_elem(...) \
 697         SIDE_COMPOUND_LITERAL(const struct side_type_description, __VA_ARGS__)
 698
 699 #define side_field_list(...) \
 700         SIDE_COMPOUND_LITERAL(const struct side_event_field, __VA_ARGS__)
 701
 702 /* Static field arguments */
 703
 704 #define side_arg_bool(_val)             { .type = SIDE_TYPE_BOOL, .u = { .side_bool = !!(_val) } }
 705 #define side_arg_u8(_val)               { .type = SIDE_TYPE_U8, .u = { .side_u8 = (_val) } }
 706 #define side_arg_u16(_val)              { .type = SIDE_TYPE_U16, .u = { .side_u16 = (_val) } }
 707 #define side_arg_u32(_val)              { .type = SIDE_TYPE_U32, .u = { .side_u32 = (_val) } }
 708 #define side_arg_u64(_val)              { .type = SIDE_TYPE_U64, .u = { .side_u64 = (_val) } }
 709 #define side_arg_s8(_val)               { .type = SIDE_TYPE_S8, .u = { .side_s8 = (_val) } }
 710 #define side_arg_s16(_val)              { .type = SIDE_TYPE_S16, .u = { .side_s16 = (_val) } }
 711 #define side_arg_s32(_val)              { .type = SIDE_TYPE_S32, .u = { .side_s32 = (_val) } }
 712 #define side_arg_s64(_val)              { .type = SIDE_TYPE_S64, .u = { .side_s64 = (_val) } }
 713 #define side_arg_byte(_val)             { .type = SIDE_TYPE_BYTE, .u = { .side_byte = (_val) } }
 714 #define side_arg_enum_bitmap8(_val)     { .type = SIDE_TYPE_ENUM_BITMAP8, .u = { .side_u8 = (_val) } }
 715 #define side_arg_enum_bitmap16(_val)    { .type = SIDE_TYPE_ENUM_BITMAP16, .u = { .side_u16 = (_val) } }
 716 #define side_arg_enum_bitmap32(_val)    { .type = SIDE_TYPE_ENUM_BITMAP32, .u = { .side_u32 = (_val) } }
 717 #define side_arg_enum_bitmap64(_val)    { .type = SIDE_TYPE_ENUM_BITMAP64, .u = { .side_u64 = (_val) } }
 718 #define side_arg_enum_bitmap_array(_side_type)  { .type = SIDE_TYPE_ENUM_BITMAP_ARRAY, .u = { .side_array = (_side_type) } }
 719 #define side_arg_enum_bitmap_vla(_side_type)    { .type = SIDE_TYPE_ENUM_BITMAP_VLA, .u = { .side_vla = (_side_type) } }
 720 #define side_arg_float_binary16(_val)   { .type = SIDE_TYPE_FLOAT_BINARY16, .u = { .side_float_binary16 = (_val) } }
 721 #define side_arg_float_binary32(_val)   { .type = SIDE_TYPE_FLOAT_BINARY32, .u = { .side_float_binary32 = (_val) } }
 722 #define side_arg_float_binary64(_val)   { .type = SIDE_TYPE_FLOAT_BINARY64, .u = { .side_float_binary64 = (_val) } }
 723 #define side_arg_float_binary128(_val)  { .type = SIDE_TYPE_FLOAT_BINARY128, .u = { .side_float_binary128 = (_val) } }
 724
 725 #define side_arg_string(_val)           { .type = SIDE_TYPE_STRING, .u = { .string = (_val) } }
 726 #define side_arg_struct(_side_type)     { .type = SIDE_TYPE_STRUCT, .u = { .side_struct = (_side_type) } }
 727 #define side_arg_array(_side_type)      { .type = SIDE_TYPE_ARRAY, .u = { .side_array = (_side_type) } }
 728 #define side_arg_vla(_side_type)        { .type = SIDE_TYPE_VLA, .u = { .side_vla = (_side_type) } }
 729 #define side_arg_vla_visitor(_ctx)      { .type = SIDE_TYPE_VLA_VISITOR, .u = { .side_vla_app_visitor_ctx = (_ctx) } }
 730
 731 #define side_arg_array_u8(_ptr)         { .type = SIDE_TYPE_ARRAY_U8, .u = { .side_array_fixint = (_ptr) } }
 732 #define side_arg_array_u16(_ptr)        { .type = SIDE_TYPE_ARRAY_U16, .u = { .side_array_fixint = (_ptr) } }
 733 #define side_arg_array_u32(_ptr)        { .type = SIDE_TYPE_ARRAY_U32, .u = { .side_array_fixint = (_ptr) } }
 734 #define side_arg_array_u64(_ptr)        { .type = SIDE_TYPE_ARRAY_U64, .u = { .side_array_fixint = (_ptr) } }
 735 #define side_arg_array_s8(_ptr)         { .type = SIDE_TYPE_ARRAY_S8, .u = { .side_array_fixint = (_ptr) } }
 736 #define side_arg_array_s16(_ptr)        { .type = SIDE_TYPE_ARRAY_S16, .u = { .side_array_fixint  = (_ptr) } }
 737 #define side_arg_array_s32(_ptr)        { .type = SIDE_TYPE_ARRAY_S32, .u = { .side_array_fixint = (_ptr) } }
 738 #define side_arg_array_s64(_ptr)        { .type = SIDE_TYPE_ARRAY_S64, .u = { .side_array_fixint = (_ptr) } }
 739 #define side_arg_array_byte(_ptr)       { .type = SIDE_TYPE_ARRAY_BYTE, .u = { .side_array_fixint = (_ptr) } }
 740
 741 #define side_arg_vla_u8(_ptr, _length)  { .type = SIDE_TYPE_VLA_U8, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } }
 742 #define side_arg_vla_u16(_ptr, _length) { .type = SIDE_TYPE_VLA_U16, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 743 #define side_arg_vla_u32(_ptr, _length) { .type = SIDE_TYPE_VLA_U32, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 744 #define side_arg_vla_u64(_ptr, _length) { .type = SIDE_TYPE_VLA_U64, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 745 #define side_arg_vla_s8(_ptr, _length)  { .type = SIDE_TYPE_VLA_S8, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 746 #define side_arg_vla_s16(_ptr, _length) { .type = SIDE_TYPE_VLA_S16, .u = { .side_vla_fixint  = { .p = (_ptr), .length = (_length) } } }
 747 #define side_arg_vla_s32(_ptr, _length) { .type = SIDE_TYPE_VLA_S32, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 748 #define side_arg_vla_s64(_ptr, _length) { .type = SIDE_TYPE_VLA_S64, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 749 #define side_arg_vla_byte(_ptr, _length) { .type = SIDE_TYPE_VLA_BYTE, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 750
 751 #define side_arg_dynamic(_dynamic_arg_type) \
 752         { \
 753                 .type = SIDE_TYPE_DYNAMIC, \
 754                 .u = { \
 755                         .dynamic = _dynamic_arg_type, \
 756                 }, \
 757         }
 758
 759 /* Dynamic field arguments */
 760
 761 #define side_arg_dynamic_null(_attr) \
 762         { \
 763                 .dynamic_type = SIDE_DYNAMIC_TYPE_NULL, \
 764                 .u = { \
 765                         .side_basic = { \
 766                                 .attr = _attr, \
 767                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 768                                 .byte_order = SIDE_TYPE_BYTE_ORDER_HOST, \
 769                         }, \
 770                 }, \
 771         }
 772
 773 #define side_arg_dynamic_bool(_val, _attr) \
 774         { \
 775                 .dynamic_type = SIDE_DYNAMIC_TYPE_BOOL, \
 776                 .u = { \
 777                         .side_basic = { \
 778                                 .attr = _attr, \
 779                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 780                                 .byte_order = SIDE_TYPE_BYTE_ORDER_HOST, \
 781                                 .u = { \
 782                                         .side_bool = !!(_val), \
 783                                 }, \
 784                         }, \
 785                 }, \
 786         }
 787
 788 #define side_arg_dynamic_u8(_val, _attr) \
 789         { \
 790                 .dynamic_type = SIDE_DYNAMIC_TYPE_U8, \
 791                 .u = { \
 792                         .side_basic = { \
 793                                 .attr = _attr, \
 794                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 795                                 .byte_order = SIDE_TYPE_BYTE_ORDER_HOST, \
 796                                 .u = { \
 797                                         .side_u8 = (_val), \
 798                                 }, \
 799                         }, \
 800                 }, \
 801         }
 802 #define side_arg_dynamic_s8(_val, _attr) \
 803         { \
 804                 .dynamic_type = SIDE_DYNAMIC_TYPE_S8, \
 805                 .u = { \
 806                         .side_basic = { \
 807                                 .attr = _attr, \
 808                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 809                                 .byte_order = SIDE_TYPE_BYTE_ORDER_HOST, \
 810                                 .u = { \
 811                                         .side_s8 = (_val), \
 812                                 }, \
 813                         }, \
 814                 }, \
 815         }
 816 #define side_arg_dynamic_byte(_val, _attr) \
 817         { \
 818                 .dynamic_type = SIDE_DYNAMIC_TYPE_BYTE, \
 819                 .u = { \
 820                         .side_basic = { \
 821                                 .attr = _attr, \
 822                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 823                                 .byte_order = SIDE_TYPE_BYTE_ORDER_HOST, \
 824                                 .u = { \
 825                                         .side_byte = (_val), \
 826                                 }, \
 827                         }, \
 828                 }, \
 829         }
 830 #define side_arg_dynamic_string(_val, _attr) \
 831         { \
 832                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRING, \
 833                 .u = { \
 834                         .side_basic = { \
 835                                 .attr = _attr, \
 836                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 837                                 .byte_order = SIDE_TYPE_BYTE_ORDER_HOST, \
 838                                 .u = { \
 839                                         .string = (_val), \
 840                                 }, \
 841                         }, \
 842                 }, \
 843         }
 844
 845 #define _side_arg_dynamic_u16(_val, _byte_order, _attr) \
 846         { \
 847                 .dynamic_type = SIDE_DYNAMIC_TYPE_U16, \
 848                 .u = { \
 849                         .side_basic = { \
 850                                 .attr = _attr, \
 851                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 852                                 .byte_order = _byte_order, \
 853                                 .u = { \
 854                                         .side_u16 = (_val), \
 855                                 }, \
 856                         }, \
 857                 }, \
 858         }
 859 #define _side_arg_dynamic_u32(_val, _byte_order, _attr) \
 860         { \
 861                 .dynamic_type = SIDE_DYNAMIC_TYPE_U32, \
 862                 .u = { \
 863                         .side_basic = { \
 864                                 .attr = _attr, \
 865                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 866                                 .byte_order = _byte_order, \
 867                                 .u = { \
 868                                         .side_u32 = (_val), \
 869                                 }, \
 870                         }, \
 871                 }, \
 872         }
 873 #define _side_arg_dynamic_u64(_val, _byte_order, _attr) \
 874         { \
 875                 .dynamic_type = SIDE_DYNAMIC_TYPE_U64, \
 876                 .u = { \
 877                         .side_basic = { \
 878                                 .attr = _attr, \
 879                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 880                                 .byte_order = _byte_order, \
 881                                 .u = { \
 882                                         .side_u64 = (_val), \
 883                                 }, \
 884                         }, \
 885                 }, \
 886         }
 887
 888 #define _side_arg_dynamic_s16(_val, _byte_order, _attr) \
 889         { \
 890                 .dynamic_type = SIDE_DYNAMIC_TYPE_S16, \
 891                 .u = { \
 892                         .side_basic = { \
 893                                 .attr = _attr, \
 894                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 895                                 .byte_order = _byte_order, \
 896                                 .u = { \
 897                                         .side_s16 = (_val), \
 898                                 }, \
 899                         }, \
 900                 }, \
 901         }
 902 #define _side_arg_dynamic_s32(_val, _byte_order, _attr) \
 903         { \
 904                 .dynamic_type = SIDE_DYNAMIC_TYPE_S32, \
 905                 .u = { \
 906                         .side_basic = { \
 907                                 .attr = _attr, \
 908                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 909                                 .byte_order = _byte_order, \
 910                                 .u = { \
 911                                         .side_s32 = (_val), \
 912                                 }, \
 913                         }, \
 914                 }, \
 915         }
 916 #define _side_arg_dynamic_s64(_val, _byte_order, _attr) \
 917         { \
 918                 .dynamic_type = SIDE_DYNAMIC_TYPE_S64, \
 919                 .u = { \
 920                         .side_basic = { \
 921                                 .attr = _attr, \
 922                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 923                                 .byte_order = _byte_order, \
 924                                 .u = { \
 925                                         .side_s64 = (_val), \
 926                                 }, \
 927                         }, \
 928                 }, \
 929         }
 930 #define _side_arg_dynamic_float_binary16(_val, _byte_order, _attr) \
 931         { \
 932                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY16, \
 933                 .u = { \
 934                         .side_basic = { \
 935                                 .attr = _attr, \
 936                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 937                                 .byte_order = _byte_order, \
 938                                 .u = { \
 939                                         .side_float_binary16 = (_val), \
 940                                 }, \
 941                         }, \
 942                 }, \
 943         }
 944 #define _side_arg_dynamic_float_binary32(_val, _byte_order, _attr) \
 945         { \
 946                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY32, \
 947                 .u = { \
 948                         .side_basic = { \
 949                                 .attr = _attr, \
 950                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 951                                 .byte_order = _byte_order, \
 952                                 .u = { \
 953                                         .side_float_binary32 = (_val), \
 954                                 }, \
 955                         }, \
 956                 }, \
 957         }
 958 #define _side_arg_dynamic_float_binary64(_val, _byte_order, _attr) \
 959         { \
 960                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY64, \
 961                 .u = { \
 962                         .side_basic = { \
 963                                 .attr = _attr, \
 964                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 965                                 .byte_order = _byte_order, \
 966                                 .u = { \
 967                                         .side_float_binary64 = (_val), \
 968                                 }, \
 969                         }, \
 970                 }, \
 971         }
 972 #define _side_arg_dynamic_float_binary128(_val, _byte_order, _attr) \
 973         { \
 974                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY128, \
 975                 .u = { \
 976                         .side_basic = { \
 977                                 .attr = _attr, \
 978                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 979                                 .byte_order = _byte_order, \
 980                                 .u = { \
 981                                         .side_float_binary128 = (_val), \
 982                                 }, \
 983                         }, \
 984                 }, \
 985         }
 986
 987 /* Host endian */
 988 #define side_arg_dynamic_u16(_val, _attr)               _side_arg_dynamic_u16(_val, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 989 #define side_arg_dynamic_u32(_val, _attr)               _side_arg_dynamic_u32(_val, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 990 #define side_arg_dynamic_u64(_val, _attr)               _side_arg_dynamic_u64(_val, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 991 #define side_arg_dynamic_s16(_val, _attr)               _side_arg_dynamic_s16(_val, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 992 #define side_arg_dynamic_s32(_val, _attr)               _side_arg_dynamic_s32(_val, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 993 #define side_arg_dynamic_s64(_val, _attr)               _side_arg_dynamic_s64(_val, SIDE_TYPE_BYTE_ORDER_HOST, SIDE_PARAM(_attr))
 994 #define side_arg_dynamic_float_binary16(_val, _attr)    _side_arg_dynamic_float_binary16(_val, SIDE_TYPE_FLOAT_WORD_ORDER_HOST, SIDE_PARAM(_attr))
 995 #define side_arg_dynamic_float_binary32(_val, _attr)    _side_arg_dynamic_float_binary32(_val, SIDE_TYPE_FLOAT_WORD_ORDER_HOST, SIDE_PARAM(_attr))
 996 #define side_arg_dynamic_float_binary64(_val, _attr)    _side_arg_dynamic_float_binary64(_val, SIDE_TYPE_FLOAT_WORD_ORDER_HOST, SIDE_PARAM(_attr))
 997 #define side_arg_dynamic_float_binary128(_val, _attr)   _side_arg_dynamic_float_binary128(_val, SIDE_TYPE_FLOAT_WORD_ORDER_HOST, SIDE_PARAM(_attr))
 998
 999 /* Little endian */
1000 #define side_arg_dynamic_u16_le(_val, _attr)                    _side_arg_dynamic_u16(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1001 #define side_arg_dynamic_u32_le(_val, _attr)                    _side_arg_dynamic_u32(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1002 #define side_arg_dynamic_u64_le(_val, _attr)                    _side_arg_dynamic_u64(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1003 #define side_arg_dynamic_s16_le(_val, _attr)                    _side_arg_dynamic_s16(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1004 #define side_arg_dynamic_s32_le(_val, _attr)                    _side_arg_dynamic_s32(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1005 #define side_arg_dynamic_s64_le(_val, _attr)                    _side_arg_dynamic_s64(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1006 #define side_arg_dynamic_float_binary16_le(_val, _attr)         _side_arg_dynamic_float_binary16(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1007 #define side_arg_dynamic_float_binary32_le(_val, _attr)         _side_arg_dynamic_float_binary32(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1008 #define side_arg_dynamic_float_binary64_le(_val, _attr)         _side_arg_dynamic_float_binary64(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1009 #define side_arg_dynamic_float_binary128_le(_val, _attr)        _side_arg_dynamic_float_binary128(_val, SIDE_TYPE_BYTE_ORDER_LE, SIDE_PARAM(_attr))
1010
1011 /* Big endian */
1012 #define side_arg_dynamic_u16_be(_val, _attr)                    _side_arg_dynamic_u16(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1013 #define side_arg_dynamic_u32_be(_val, _attr)                    _side_arg_dynamic_u32(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1014 #define side_arg_dynamic_u64_be(_val, _attr)                    _side_arg_dynamic_u64(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1015 #define side_arg_dynamic_s16_be(_val, _attr)                    _side_arg_dynamic_s16(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1016 #define side_arg_dynamic_s32_be(_val, _attr)                    _side_arg_dynamic_s32(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1017 #define side_arg_dynamic_s64_be(_val, _attr)                    _side_arg_dynamic_s64(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1018 #define side_arg_dynamic_float_binary16_be(_val, _attr)         _side_arg_dynamic_float_binary16(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1019 #define side_arg_dynamic_float_binary32_be(_val, _attr)         _side_arg_dynamic_float_binary32(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1020 #define side_arg_dynamic_float_binary64_be(_val, _attr)         _side_arg_dynamic_float_binary64(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1021 #define side_arg_dynamic_float_binary128_be(_val, _attr)        _side_arg_dynamic_float_binary128(_val, SIDE_TYPE_BYTE_ORDER_BE, SIDE_PARAM(_attr))
1022
1023 #define side_arg_dynamic_vla(_vla) \
1024         { \
1025                 .dynamic_type = SIDE_DYNAMIC_TYPE_VLA, \
1026                 .u = { \
1027                         .side_dynamic_vla = (_vla), \
1028                 }, \
1029         }
1030
1031 #define side_arg_dynamic_vla_visitor(_dynamic_vla_visitor, _ctx, _attr) \
1032         { \
1033                 .dynamic_type = SIDE_DYNAMIC_TYPE_VLA_VISITOR, \
1034                 .u = { \
1035                         .side_dynamic_vla_visitor = { \
1036                                 .app_ctx = _ctx, \
1037                                 .visitor = _dynamic_vla_visitor, \
1038                                 .attr = _attr, \
1039                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1040                         }, \
1041                 }, \
1042         }
1043
1044 #define side_arg_dynamic_struct(_struct) \
1045         { \
1046                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRUCT, \
1047                 .u = { \
1048                         .side_dynamic_struct = (_struct), \
1049                 }, \
1050         }
1051
1052 #define side_arg_dynamic_struct_visitor(_dynamic_struct_visitor, _ctx, _attr) \
1053         { \
1054                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRUCT_VISITOR, \
1055                 .u = { \
1056                         .side_dynamic_struct_visitor = { \
1057                                 .app_ctx = _ctx, \
1058                                 .visitor = _dynamic_struct_visitor, \
1059                                 .attr = _attr, \
1060                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1061                         }, \
1062                 }, \
1063         }
1064
1065 #define side_arg_dynamic_define_vec(_identifier, _sav, _attr) \
1066         const struct side_arg_dynamic_vec _identifier##_vec[] = { _sav }; \
1067         const struct side_arg_dynamic_vec_vla _identifier = { \
1068                 .sav = _identifier##_vec, \
1069                 .attr = _attr, \
1070                 .len = SIDE_ARRAY_SIZE(_identifier##_vec), \
1071                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1072         }
1073
1074 #define side_arg_dynamic_define_struct(_identifier, _struct_fields, _attr) \
1075         const struct side_arg_dynamic_event_field _identifier##_fields[] = { _struct_fields }; \
1076         const struct side_arg_dynamic_event_struct _identifier = { \
1077                 .fields = _identifier##_fields, \
1078                 .attr = _attr, \
1079                 .len = SIDE_ARRAY_SIZE(_identifier##_fields), \
1080                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1081         }
1082
1083 #define side_arg_define_vec(_identifier, _sav) \
1084         const struct side_arg_vec _identifier##_vec[] = { _sav }; \
1085         const struct side_arg_vec_description _identifier = { \
1086                 .sav = _identifier##_vec, \
1087                 .len = SIDE_ARRAY_SIZE(_identifier##_vec), \
1088         }
1089
1090 #define side_arg_dynamic_field(_name, _elem) \
1091         { \
1092                 .field_name = _name, \
1093                 .elem = _elem, \
1094         }
1095
1096 #define side_arg_list(...)      __VA_ARGS__
1097
1098 #define side_define_enum(_identifier, _mappings, _attr) \
1099         const struct side_enum_mappings _identifier = { \
1100                 .mappings = _mappings, \
1101                 .attr = _attr, \
1102                 .nr_mappings = SIDE_ARRAY_SIZE(SIDE_PARAM(_mappings)), \
1103                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1104         }
1105
1106 #define side_enum_mapping_list(...) \
1107         SIDE_COMPOUND_LITERAL(const struct side_enum_mapping, __VA_ARGS__)
1108
1109 #define side_enum_mapping_range(_label, _begin, _end) \
1110         { \
1111                 .range_begin = _begin, \
1112                 .range_end = _end, \
1113                 .label = _label, \
1114         }
1115
1116 #define side_enum_mapping_value(_label, _value) \
1117         { \
1118                 .range_begin = _value, \
1119                 .range_end = _value, \
1120                 .label = _label, \
1121         }
1122
1123 #define side_define_enum_bitmap(_identifier, _mappings, _attr) \
1124         const struct side_enum_bitmap_mappings _identifier = { \
1125                 .mappings = _mappings, \
1126                 .attr = _attr, \
1127                 .nr_mappings = SIDE_ARRAY_SIZE(SIDE_PARAM(_mappings)), \
1128                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1129         }
1130
1131 #define side_enum_bitmap_mapping_list(...) \
1132         SIDE_COMPOUND_LITERAL(const struct side_enum_bitmap_mapping, __VA_ARGS__)
1133
1134 #define side_enum_bitmap_mapping_range(_label, _begin, _end) \
1135         { \
1136                 .range_begin = _begin, \
1137                 .range_end = _end, \
1138                 .label = _label, \
1139         }
1140
1141 #define side_enum_bitmap_mapping_value(_label, _value) \
1142         { \
1143                 .range_begin = _value, \
1144                 .range_end = _value, \
1145                 .label = _label, \
1146         }
1147
1148 #define side_event_cond(_identifier) \
1149         if (side_unlikely(__atomic_load_n(&side_event_enable__##_identifier, \
1150                                         __ATOMIC_RELAXED)))
1151
1152 #define side_event_call(_identifier, _sav) \
1153         { \
1154                 const struct side_arg_vec side_sav[] = { _sav }; \
1155                 const struct side_arg_vec_description sav_desc = { \
1156                         .sav = side_sav, \
1157                         .len = SIDE_ARRAY_SIZE(side_sav), \
1158                 }; \
1159                 side_call(&(_identifier), &sav_desc); \
1160         }
1161
1162 #define side_event(_identifier, _sav) \
1163         side_event_cond(_identifier) \
1164                 side_event_call(_identifier, SIDE_PARAM(_sav))
1165
1166 #define side_event_call_variadic(_identifier, _sav, _var_fields, _attr) \
1167         { \
1168                 const struct side_arg_vec side_sav[] = { _sav }; \
1169                 const struct side_arg_vec_description sav_desc = { \
1170                         .sav = side_sav, \
1171                         .len = SIDE_ARRAY_SIZE(side_sav), \
1172                 }; \
1173                 const struct side_arg_dynamic_event_field side_fields[] = { _var_fields }; \
1174                 const struct side_arg_dynamic_event_struct var_struct = { \
1175                         .fields = side_fields, \
1176                         .attr = _attr, \
1177                         .len = SIDE_ARRAY_SIZE(side_fields), \
1178                         .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1179                 }; \
1180                 side_call_variadic(&(_identifier), &sav_desc, &var_struct); \
1181         }
1182
1183 #define side_event_variadic(_identifier, _sav, _var, _attr) \
1184         side_event_cond(_identifier) \
1185                 side_event_call_variadic(_identifier, SIDE_PARAM(_sav), SIDE_PARAM(_var), SIDE_PARAM(_attr))
1186
1187 #define _side_define_event(_linkage, _identifier, _provider, _event, _loglevel, _fields, _attr, _flags) \
1188         _linkage uintptr_t side_event_enable__##_identifier __attribute__((section("side_event_enable"))); \
1189         _linkage struct side_event_description __attribute__((section("side_event_description"))) \
1190                         _identifier = { \
1191                 .version = 0, \
1192                 .enabled = &(side_event_enable__##_identifier), \
1193                 .loglevel = _loglevel, \
1194                 .nr_fields = SIDE_ARRAY_SIZE(SIDE_PARAM(_fields)), \
1195                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1196                 .nr_callbacks = 0, \
1197                 .flags = (_flags), \
1198                 .provider_name = _provider, \
1199                 .event_name = _event, \
1200                 .fields = _fields, \
1201                 .attr = _attr, \
1202                 .callbacks = &side_empty_callback, \
1203         }; \
1204         static const struct side_event_description *side_event_ptr__##_identifier \
1205                 __attribute__((section("side_event_description_ptr"), used)) = &(_identifier);
1206
1207 #define side_static_event(_identifier, _provider, _event, _loglevel, _fields, _attr) \
1208         _side_define_event(static, _identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
1209                         SIDE_PARAM(_attr), 0)
1210
1211 #define side_static_event_variadic(_identifier, _provider, _event, _loglevel, _fields, _attr) \
1212         _side_define_event(static, _identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
1213                         SIDE_PARAM(_attr), SIDE_EVENT_FLAG_VARIADIC)
1214
1215 #define side_hidden_event(_identifier, _provider, _event, _loglevel, _fields, _attr) \
1216         _side_define_event(__attribute__((visibility("hidden"))), _identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
1217                         SIDE_PARAM(_attr), 0)
1218
1219 #define side_hidden_event_variadic(_identifier, _provider, _event, _loglevel, _fields, _attr) \
1220         _side_define_event(__attribute__((visibility("hidden"))), _identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
1221                         SIDE_PARAM(_attr), SIDE_EVENT_FLAG_VARIADIC)
1222
1223 #define side_export_event(_identifier, _provider, _event, _loglevel, _fields, _attr) \
1224         _side_define_event(__attribute__((visibility("default"))), _identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
1225                         SIDE_PARAM(_attr), 0)
1226
1227 #define side_export_event_variadic(_identifier, _provider, _event, _loglevel, _fields, _attr) \
1228         _side_define_event(__attribute__((visibility("default"))), _identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
1229                         SIDE_PARAM(_attr), SIDE_EVENT_FLAG_VARIADIC)
1230
1231 #define side_declare_event(_identifier) \
1232         extern uintptr_t side_event_enable_##_identifier; \
1233         extern struct side_event_description _identifier
1234
1235 extern const struct side_callback side_empty_callback;
1236
1237 void side_call(const struct side_event_description *desc,
1238         const struct side_arg_vec_description *sav_desc);
1239 void side_call_variadic(const struct side_event_description *desc,
1240         const struct side_arg_vec_description *sav_desc,
1241         const struct side_arg_dynamic_event_struct *var_struct);
1242
1243 int side_tracer_callback_register(struct side_event_description *desc,
1244                 void (*call)(const struct side_event_description *desc,
1245                         const struct side_arg_vec_description *sav_desc,
1246                         void *priv),
1247                 void *priv);
1248 int side_tracer_callback_variadic_register(struct side_event_description *desc,
1249                 void (*call_variadic)(const struct side_event_description *desc,
1250                         const struct side_arg_vec_description *sav_desc,
1251                         const struct side_arg_dynamic_event_struct *var_struct,
1252                         void *priv),
1253                 void *priv);
1254 int side_tracer_callback_unregister(struct side_event_description *desc,
1255                 void (*call)(const struct side_event_description *desc,
1256                         const struct side_arg_vec_description *sav_desc,
1257                         void *priv),
1258                 void *priv);
1259 int side_tracer_callback_variadic_unregister(struct side_event_description *desc,
1260                 void (*call_variadic)(const struct side_event_description *desc,
1261                         const struct side_arg_vec_description *sav_desc,
1262                         const struct side_arg_dynamic_event_struct *var_struct,
1263                         void *priv),
1264                 void *priv);
1265
1266 struct side_events_register_handle *side_events_register(struct side_event_description **events, uint32_t nr_events);
1267 void side_events_unregister(struct side_events_register_handle *handle);
1268
1269 enum side_tracer_notification {
1270         SIDE_TRACER_NOTIFICATION_INSERT_EVENTS,
1271         SIDE_TRACER_NOTIFICATION_REMOVE_EVENTS,
1272 };
1273
1274 /* Callback is invoked with side library internal lock held. */
1275 struct side_tracer_handle *side_tracer_event_notification_register(
1276                 void (*cb)(enum side_tracer_notification notif,
1277                         struct side_event_description **events, uint32_t nr_events, void *priv),
1278                 void *priv);
1279 void side_tracer_event_notification_unregister(struct side_tracer_handle *handle);
1280
1281 void side_init(void);
1282 void side_exit(void);
1283
1284 /*
1285  * These weak symbols, the constructor, and destructor take care of
1286  * registering only _one_ instance of the side instrumentation per
1287  * shared-ojbect (or for the whole main program).
1288  */
1289 extern struct side_event_description * __start_side_event_description_ptr[]
1290         __attribute__((weak, visibility("hidden")));
1291 extern struct side_event_description * __stop_side_event_description_ptr[]
1292         __attribute__((weak, visibility("hidden")));
1293 int side_event_description_ptr_registered
1294         __attribute__((weak, visibility("hidden")));
1295 struct side_events_register_handle *side_events_handle
1296         __attribute__((weak, visibility("hidden")));
1297
1298 static void
1299 side_event_description_ptr_init(void)
1300         __attribute__((no_instrument_function))
1301         __attribute__((constructor));
1302 static void
1303 side_event_description_ptr_init(void)
1304 {
1305         if (side_event_description_ptr_registered++)
1306                 return;
1307         side_events_handle = side_events_register(__start_side_event_description_ptr,
1308                 __stop_side_event_description_ptr - __start_side_event_description_ptr);
1309 }
1310
1311 static void
1312 side_event_description_ptr_exit(void)
1313         __attribute__((no_instrument_function))
1314         __attribute__((destructor));
1315 static void
1316 side_event_description_ptr_exit(void)
1317 {
1318         if (--side_event_description_ptr_registered)
1319                 return;
1320         side_events_unregister(side_events_handle);
1321         side_events_handle = NULL;
1322 }
1323
1324 #endif /* _SIDE_TRACE_H */