| 1 | /* |
| 2 | |
| 3 | genevent.c: Generate helper declarations and functions to trace events |
| 4 | from an event description file. |
| 5 | |
| 6 | Copyright (C) 2002, Xianxiu Yang |
| 7 | Copyright (C) 2002, Michel Dagenais |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; version 2 of the License. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | /* This program reads the ".event" event definitions input files |
| 24 | specified as command line arguments and generates corresponding |
| 25 | ".c" and ".h" files required to trace such events in the kernel. |
| 26 | |
| 27 | The program uses a very simple tokenizer, called from a hand written |
| 28 | recursive descent parser to fill a data structure describing the events. |
| 29 | The result is a sequence of events definitions which refer to type |
| 30 | definitions. |
| 31 | |
| 32 | A table of named types is maintained to allow refering to types by name |
| 33 | when the same type is used at several places. Finally a sequence of |
| 34 | all types is maintained to facilitate the freeing of all type |
| 35 | information when the processing of an ".event" file is finished. */ |
| 36 | |
| 37 | #include <stdlib.h> |
| 38 | #include <string.h> |
| 39 | #include <ctype.h> |
| 40 | #include <stdio.h> |
| 41 | #include <stdarg.h> |
| 42 | #include <linux/errno.h> |
| 43 | #include <assert.h> |
| 44 | |
| 45 | #include "parser.h" |
| 46 | #include "genevent.h" |
| 47 | |
| 48 | /* Named types may be referenced from anywhere */ |
| 49 | |
| 50 | facility * fac; |
| 51 | |
| 52 | int main(int argc, char** argv) |
| 53 | { |
| 54 | char *token; |
| 55 | parse_file in; |
| 56 | char buffer[BUFFER_SIZE]; |
| 57 | int i; |
| 58 | |
| 59 | if(argc < 2){ |
| 60 | printf("At least one event definition file is needed\n"); |
| 61 | exit(1); |
| 62 | } |
| 63 | |
| 64 | in.buffer = buffer; |
| 65 | in.error = error_callback; |
| 66 | |
| 67 | for(i = 1 ; i < argc ; i++) { |
| 68 | in.lineno = 0; |
| 69 | in.name = allocAndCopy(argv[i]); |
| 70 | |
| 71 | in.fp = fopen(in.name, "r"); |
| 72 | if(!in.fp ){ |
| 73 | in.error(&in,"cannot open facility input file"); |
| 74 | } |
| 75 | |
| 76 | while(1){ |
| 77 | token = getToken(&in); |
| 78 | if(in.type == ENDFILE) break; |
| 79 | |
| 80 | if(strcmp(token, "<")) in.error(&in,"not a facility file"); |
| 81 | token = getName(&in); |
| 82 | |
| 83 | if(strcmp("facility",token) == 0) { |
| 84 | fac = memAlloc(sizeof(facility)); |
| 85 | fac->name = NULL; |
| 86 | fac->description = NULL; |
| 87 | sequence_init(&(fac->events)); |
| 88 | table_init(&(fac->named_types)); |
| 89 | sequence_init(&(fac->unnamed_types)); |
| 90 | |
| 91 | parseFacility(&in, fac); |
| 92 | |
| 93 | //check if any namedType is not defined |
| 94 | checkNamedTypesImplemented(&fac->named_types); |
| 95 | } |
| 96 | else in.error(&in,"facility token was expected"); |
| 97 | |
| 98 | generateFile(argv[i]); |
| 99 | |
| 100 | free(fac->name); |
| 101 | free(fac->description); |
| 102 | freeEvents(&fac->events); |
| 103 | sequence_dispose(&fac->events); |
| 104 | freeNamedType(&fac->named_types); |
| 105 | table_dispose(&fac->named_types); |
| 106 | freeTypes(&fac->unnamed_types); |
| 107 | sequence_dispose(&fac->unnamed_types); |
| 108 | free(fac); |
| 109 | } |
| 110 | |
| 111 | free(in.name); |
| 112 | fclose(in.fp); |
| 113 | |
| 114 | } |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | |
| 119 | /***************************************************************************** |
| 120 | *Function name |
| 121 | * generateFile : generate .c and .h file |
| 122 | *Input Params |
| 123 | * name : name of event definition file |
| 124 | ****************************************************************************/ |
| 125 | void generateFile(char *name){ |
| 126 | char *loadName, *hName, *hIdName, *cName, *tmp, *tmp2; |
| 127 | FILE * lFp, *hFp, *iFp, *cFp; |
| 128 | int nbEvent; |
| 129 | unsigned long checksum=0; |
| 130 | |
| 131 | //remove .xml if it exists |
| 132 | tmp = &name[strlen(name)-4]; |
| 133 | if(strcmp(tmp, ".xml") == 0){ |
| 134 | *tmp = '\0'; |
| 135 | } |
| 136 | |
| 137 | tmp = strrchr(name,'/'); |
| 138 | if(tmp){ |
| 139 | tmp++; |
| 140 | }else{ |
| 141 | tmp = name; |
| 142 | } |
| 143 | |
| 144 | loadName = appendString("ltt-facility-loader-", tmp); |
| 145 | tmp2 = appendString(loadName,".h"); |
| 146 | free(loadName); |
| 147 | loadName = tmp2; |
| 148 | hName = appendString("ltt-facility-", tmp); |
| 149 | tmp2 = appendString(hName,".h"); |
| 150 | free(hName); |
| 151 | hName = tmp2; |
| 152 | hIdName = appendString("ltt-facility-id-", tmp); |
| 153 | tmp2 = appendString(hIdName,".h"); |
| 154 | free(hIdName); |
| 155 | hIdName = tmp2; |
| 156 | cName = appendString("ltt-facility-loader-", tmp); |
| 157 | tmp2 = appendString(cName,".c"); |
| 158 | free(cName); |
| 159 | cName = tmp2; |
| 160 | lFp = fopen(loadName,"w"); |
| 161 | if(!lFp){ |
| 162 | printf("Cannot open the file : %s\n",loadName); |
| 163 | exit(1); |
| 164 | } |
| 165 | |
| 166 | hFp = fopen(hName,"w"); |
| 167 | if(!hFp){ |
| 168 | printf("Cannot open the file : %s\n",hName); |
| 169 | exit(1); |
| 170 | } |
| 171 | |
| 172 | iFp = fopen(hIdName,"w"); |
| 173 | if(!iFp){ |
| 174 | printf("Cannot open the file : %s\n",hIdName); |
| 175 | exit(1); |
| 176 | } |
| 177 | |
| 178 | cFp = fopen(cName,"w"); |
| 179 | if(!cFp){ |
| 180 | printf("Cannot open the file : %s\n",cName); |
| 181 | exit(1); |
| 182 | } |
| 183 | |
| 184 | free(loadName); |
| 185 | free(hName); |
| 186 | free(hIdName); |
| 187 | free(cName); |
| 188 | |
| 189 | generateChecksum(fac->name, &checksum, &(fac->events)); |
| 190 | |
| 191 | /* generate .h file, event enumeration then structures and functions */ |
| 192 | fprintf(iFp, "#ifndef _LTT_FACILITY_ID_%s_H_\n",fac->capname); |
| 193 | fprintf(iFp, "#define _LTT_FACILITY_ID_%s_H_\n\n",fac->capname); |
| 194 | generateEnumEvent(iFp, fac->name, &nbEvent, checksum); |
| 195 | fprintf(iFp, "#endif //_LTT_FACILITY_ID_%s_H_\n",fac->capname); |
| 196 | |
| 197 | |
| 198 | fprintf(hFp, "#ifndef _LTT_FACILITY_%s_H_\n",fac->capname); |
| 199 | fprintf(hFp, "#define _LTT_FACILITY_%s_H_\n\n",fac->capname); |
| 200 | generateTypeDefs(hFp, fac->name); |
| 201 | generateStructFunc(hFp, fac->name,checksum); |
| 202 | fprintf(hFp, "#endif //_LTT_FACILITY_%s_H_\n",fac->capname); |
| 203 | |
| 204 | /* generate .h file, calls to register the facility at init time */ |
| 205 | generateLoaderfile(lFp,fac->name,nbEvent,checksum,fac->capname); |
| 206 | |
| 207 | // create ltt-facility-loader-facname.c |
| 208 | generateCfile(cFp, tmp); |
| 209 | |
| 210 | fclose(hFp); |
| 211 | fclose(iFp); |
| 212 | fclose(lFp); |
| 213 | fclose(cFp); |
| 214 | |
| 215 | } |
| 216 | |
| 217 | |
| 218 | /***************************************************************************** |
| 219 | *Function name |
| 220 | * generateEnumEvent : output event enum to .h file |
| 221 | *Input Params |
| 222 | * fp : file to be written to |
| 223 | * facName : name of facility |
| 224 | *Output Params |
| 225 | * nbEvent : number of events in the facility |
| 226 | ****************************************************************************/ |
| 227 | void generateEnumEvent(FILE *fp, char *facName, int * nbEvent, unsigned long checksum) { |
| 228 | int pos = 0; |
| 229 | |
| 230 | fprintf(fp,"#include <linux/ltt-facilities.h>\n\n"); |
| 231 | |
| 232 | fprintf(fp,"/**** facility handle ****/\n\n"); |
| 233 | fprintf(fp,"extern ltt_facility_t ltt_facility_%s_%X;\n",facName, checksum); |
| 234 | fprintf(fp,"extern ltt_facility_t ltt_facility_%s;\n\n\n",facName, checksum); |
| 235 | |
| 236 | fprintf(fp,"/**** event type ****/\n\n"); |
| 237 | fprintf(fp,"enum %s_event {\n",facName); |
| 238 | |
| 239 | for(pos = 0; pos < fac->events.position;pos++) { |
| 240 | fprintf(fp,"\tevent_%s", ((event *)(fac->events.array[pos]))->name); |
| 241 | if(pos != fac->events.position-1) fprintf(fp,",\n"); |
| 242 | } |
| 243 | fprintf(fp,"\n};\n\n\n"); |
| 244 | |
| 245 | // fprintf(fp,"/**** number of events in the facility ****/\n\n"); |
| 246 | // fprintf(fp,"int nbEvents_%s = %d;\n\n\n",facName, fac->events.position); |
| 247 | *nbEvent = fac->events.position; |
| 248 | } |
| 249 | |
| 250 | |
| 251 | /***************************************************************************** |
| 252 | *Function name |
| 253 | * printStruct : Generic struct printing function |
| 254 | *Input Params |
| 255 | * fp : file to be written to |
| 256 | * len : number of fields |
| 257 | * array : array of field info |
| 258 | * name : basic struct name |
| 259 | * facName : name of facility |
| 260 | * whichTypeFirst : struct or array/sequence first |
| 261 | * hasStrSeq : string or sequence present? |
| 262 | * structCount : struct postfix |
| 263 | ****************************************************************************/ |
| 264 | |
| 265 | static void |
| 266 | printStruct(FILE * fp, int len, void ** array, char * name, char * facName, |
| 267 | int * whichTypeFirst, int * hasStrSeq, int * structCount) |
| 268 | { |
| 269 | int flag = 0; |
| 270 | int pos; |
| 271 | field * fld; |
| 272 | type_descriptor * td; |
| 273 | |
| 274 | for (pos = 0; pos < len; pos++) { |
| 275 | fld = (field *)array[pos]; |
| 276 | td = fld->type; |
| 277 | if( td->type == STRING || td->type == SEQUENCE || |
| 278 | td->type == ARRAY) { |
| 279 | (*hasStrSeq)++; |
| 280 | } |
| 281 | // if (*whichTypeFirst == 0) { |
| 282 | // *whichTypeFirst = 1; //struct first |
| 283 | // } |
| 284 | if (flag == 0) { |
| 285 | flag = 1; |
| 286 | |
| 287 | fprintf(fp,"struct %s_%s",name, facName); |
| 288 | if (structCount) { |
| 289 | fprintf(fp, "_%d {\n",++*structCount); |
| 290 | } else { |
| 291 | fprintf(fp, " {\n"); |
| 292 | } |
| 293 | } |
| 294 | fprintf(fp, "\t%s %s; /* %s */\n", |
| 295 | getTypeStr(td),fld->name,fld->description ); |
| 296 | #if 0 |
| 297 | } else { |
| 298 | if (*whichTypeFirst == 0) { |
| 299 | //string or sequence or array first |
| 300 | *whichTypeFirst = 2; |
| 301 | } |
| 302 | (*hasStrSeq)++; |
| 303 | if(flag) { |
| 304 | fprintf(fp,"} __attribute__ ((packed));\n\n"); |
| 305 | } |
| 306 | flag = 0; |
| 307 | } |
| 308 | #endif //0 |
| 309 | } |
| 310 | |
| 311 | if(flag) { |
| 312 | fprintf(fp,"} __attribute__ ((packed));\n\n"); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | |
| 317 | /***************************************************************************** |
| 318 | *Function name |
| 319 | * generateHfile : Create the typedefs |
| 320 | *Input Params |
| 321 | * fp : file to be written to |
| 322 | ****************************************************************************/ |
| 323 | void |
| 324 | generateTypeDefs(FILE * fp, char *facName) |
| 325 | { |
| 326 | int pos, tmp = 1; |
| 327 | |
| 328 | fprintf(fp,"#include <linux/types.h>\n"); |
| 329 | fprintf(fp,"#include <linux/spinlock.h>\n"); |
| 330 | fprintf(fp,"#include <linux/ltt/ltt-facility-id-%s.h>\n\n", facName); |
| 331 | fprintf(fp,"#include <linux/ltt-core.h>\n"); |
| 332 | fprintf(fp,"#ifdef CONFIG_UML\n"); |
| 333 | fprintf(fp,"#include \"irq_user.h\"\n"); |
| 334 | fprintf(fp,"#endif //CONFIG_UML\n"); |
| 335 | |
| 336 | fprintf(fp, "/**** Basic Type Definitions ****/\n\n"); |
| 337 | |
| 338 | for (pos = 0; pos < fac->named_types.values.position; pos++) { |
| 339 | type_descriptor * type = |
| 340 | (type_descriptor*)fac->named_types.values.array[pos]; |
| 341 | printStruct(fp, type->fields.position, type->fields.array, |
| 342 | "", type->type_name, &tmp, &tmp, NULL); |
| 343 | fprintf(fp, "typedef struct _%s %s;\n\n", |
| 344 | type->type_name, type->type_name); |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | |
| 349 | /***************************************************************************** |
| 350 | *Function name |
| 351 | * generateEnumDefinition: generate enum definition if it exists |
| 352 | *Input Params |
| 353 | * fp : file to be written to |
| 354 | * fHead : enum type |
| 355 | ****************************************************************************/ |
| 356 | void generateEnumDefinition(FILE * fp, type_descriptor * type){ |
| 357 | int pos; |
| 358 | |
| 359 | if(type->already_printed) return; |
| 360 | |
| 361 | fprintf(fp,"enum {\n"); |
| 362 | for(pos = 0; pos < type->labels.position; pos++){ |
| 363 | fprintf(fp,"\tLTT_ENUM_%s", type->labels.array[pos]); |
| 364 | if (pos != type->labels.position - 1) fprintf(fp,","); |
| 365 | if(type->labels_description.array[pos] != NULL) |
| 366 | fprintf(fp,"\t/* %s */\n",type->labels_description.array[pos]); |
| 367 | else |
| 368 | fprintf(fp,"\n"); |
| 369 | } |
| 370 | fprintf(fp,"};\n\n\n"); |
| 371 | |
| 372 | type->already_printed = 1; |
| 373 | } |
| 374 | |
| 375 | /***************************************************************************** |
| 376 | *Function name |
| 377 | * generateStrucTFunc: output structure and function to .h file |
| 378 | *Input Params |
| 379 | * fp : file to be written to |
| 380 | * facName : name of facility |
| 381 | ****************************************************************************/ |
| 382 | void generateStructFunc(FILE * fp, char * facName, unsigned long checksum){ |
| 383 | event * ev; |
| 384 | field * fld; |
| 385 | type_descriptor * td; |
| 386 | int pos, pos1; |
| 387 | int hasStrSeq, flag, structCount, seqCount,strCount, whichTypeFirst=0; |
| 388 | |
| 389 | for(pos = 0; pos < fac->events.position; pos++){ |
| 390 | ev = (event *) fac->events.array[pos]; |
| 391 | //yxx if(ev->nested)continue; |
| 392 | fprintf(fp,"/**** structure and trace function for event: %s ****/\n\n", |
| 393 | ev->name); |
| 394 | //if(ev->type == 0){ // event without type |
| 395 | // fprintf(fp,"static inline void trace_%s_%s(void){\n",facName,ev->name); |
| 396 | // fprintf(fp,"\tltt_log_event(ltt_facility_%s_%X, event_%s, 0, NULL);\n", |
| 397 | // facName,checksum,ev->name); |
| 398 | // fprintf(fp,"};\n\n\n"); |
| 399 | // continue; |
| 400 | //} |
| 401 | |
| 402 | //if fields contain enum, print out enum definition |
| 403 | //MD : fixed in generateEnumDefinition to do not print the same enum |
| 404 | //twice. |
| 405 | if(ev->type != 0) |
| 406 | for(pos1 = 0; pos1 < ev->type->fields.position; pos1++){ |
| 407 | fld = (field *)ev->type->fields.array[pos1]; |
| 408 | if(fld->type->type == ENUM) generateEnumDefinition(fp, fld->type); |
| 409 | } |
| 410 | |
| 411 | //default: no string, array or sequence in the event |
| 412 | hasStrSeq = 0; |
| 413 | whichTypeFirst = 0; |
| 414 | structCount = 0; |
| 415 | |
| 416 | //structure for kernel |
| 417 | if(ev->type != 0) |
| 418 | printStruct(fp, ev->type->fields.position, ev->type->fields.array, |
| 419 | ev->name, facName, &whichTypeFirst, &hasStrSeq, &structCount); |
| 420 | |
| 421 | //trace function : function name and parameters |
| 422 | seqCount = 0; |
| 423 | strCount = 0; |
| 424 | fprintf(fp,"static inline void trace_%s_%s(",facName,ev->name); |
| 425 | if(ev->type == 0) |
| 426 | fprintf(fp, "void"); |
| 427 | else |
| 428 | for(pos1 = 0; pos1 < ev->type->fields.position; pos1++){ |
| 429 | fld = (field *)ev->type->fields.array[pos1]; |
| 430 | td = fld->type; |
| 431 | if(td->type == ARRAY ){ |
| 432 | fprintf(fp,"%s * %s",getTypeStr(td), fld->name); |
| 433 | }else if(td->type == STRING){ |
| 434 | fprintf(fp,"short int strlength_%d, %s * %s", |
| 435 | ++strCount, getTypeStr(td), fld->name); |
| 436 | }else if(td->type == SEQUENCE){ |
| 437 | fprintf(fp,"%s seqlength_%d, %s * %s", |
| 438 | uintOutputTypes[td->size], ++seqCount,getTypeStr(td), fld->name); |
| 439 | }else fprintf(fp,"%s %s",getTypeStr(td), fld->name); |
| 440 | if(pos1 != ev->type->fields.position - 1) fprintf(fp,", "); |
| 441 | } |
| 442 | fprintf(fp,")\n{\n"); |
| 443 | |
| 444 | //length of buffer : length of all structures |
| 445 | fprintf(fp,"\tint length = "); |
| 446 | if(ev->type == 0) fprintf(fp, "0"); |
| 447 | |
| 448 | for(pos1=0;pos1<structCount;pos1++){ |
| 449 | fprintf(fp,"sizeof(struct %s_%s_%d)",ev->name, facName,pos1+1); |
| 450 | if(pos1 != structCount-1) fprintf(fp," + "); |
| 451 | } |
| 452 | |
| 453 | //length of buffer : length of all arrays, sequences and strings |
| 454 | seqCount = 0; |
| 455 | strCount = 0; |
| 456 | flag = 0; |
| 457 | if(ev->type != 0) |
| 458 | for(pos1 = 0; pos1 < ev->type->fields.position; pos1++){ |
| 459 | fld = (field *)ev->type->fields.array[pos1]; |
| 460 | td = fld->type; |
| 461 | if(td->type == SEQUENCE || td->type==STRING || td->type==ARRAY){ |
| 462 | if(structCount || flag > 0) fprintf(fp," + "); |
| 463 | if(td->type == SEQUENCE) |
| 464 | fprintf(fp,"sizeof(%s) + sizeof(%s) * seqlength_%d", |
| 465 | uintOutputTypes[td->size], getTypeStr(td), ++seqCount); |
| 466 | else if(td->type==STRING) fprintf(fp,"strlength_%d + 1", ++strCount); |
| 467 | else if(td->type==ARRAY) |
| 468 | fprintf(fp,"sizeof(%s) * %d", getTypeStr(td),td->size); |
| 469 | if(structCount == 0) flag = 1; |
| 470 | } |
| 471 | } |
| 472 | fprintf(fp,";\n"); |
| 473 | |
| 474 | //allocate buffer |
| 475 | // MD no more need. fprintf(fp,"\tchar buff[buflength];\n"); |
| 476 | // write directly to the channel |
| 477 | fprintf(fp, "\tunsigned int index;\n"); |
| 478 | fprintf(fp, "\tstruct ltt_channel_struct *channel;\n"); |
| 479 | fprintf(fp, "\tstruct ltt_trace_struct *trace;\n"); |
| 480 | fprintf(fp, "\tunsigned long _flags;\n"); |
| 481 | fprintf(fp, "\tvoid *buff;\n"); |
| 482 | fprintf(fp, "\tunsigned int header_length;\n"); |
| 483 | fprintf(fp, "\tunsigned int event_length;\n"); |
| 484 | fprintf(fp, "\tint resret;\n"); |
| 485 | |
| 486 | if(ev->type != 0) |
| 487 | fprintf(fp, "\tstruct %s_%s_1* __1;\n\n", ev->name, facName); |
| 488 | |
| 489 | fprintf(fp, "\t/* Disable interrupts. */\n"); |
| 490 | fprintf(fp, "\tlocal_irq_save(_flags);\n"); |
| 491 | fprintf(fp, "\tpreempt_disable();\n\n"); |
| 492 | |
| 493 | fprintf(fp, "\tltt_nesting[smp_processor_id()]++;\n"); |
| 494 | fprintf(fp, "\tif(ltt_nesting[smp_processor_id] > 1) goto unlock;\n"); |
| 495 | fprintf(fp, "\tspin_lock(<t_traces.locks[smp_processor_id()]);\n\n"); |
| 496 | |
| 497 | fprintf(fp, |
| 498 | "\tif(ltt_traces.num_active_traces == 0) goto unlock_traces;\n\n"); |
| 499 | |
| 500 | fprintf(fp, |
| 501 | "\tindex = ltt_get_index_from_facility(ltt_facility_%s_%X,\n"\ |
| 502 | "\t\t\t\tevent_%s);\n", |
| 503 | facName, checksum, ev->name); |
| 504 | fprintf(fp,"\n"); |
| 505 | |
| 506 | /* For each trace */ |
| 507 | fprintf(fp, "\tlist_for_each_entry(trace, <t_traces.head, list) {\n"); |
| 508 | fprintf(fp, "\t\tif(!trace->active) continue;\n\n"); |
| 509 | |
| 510 | fprintf(fp, "\t\theader_length = " |
| 511 | "ltt_get_event_header_size(trace);\n"); |
| 512 | fprintf(fp, "\t\tevent_length = header_length + length;\n"); |
| 513 | |
| 514 | /* Reserve the channel */ |
| 515 | fprintf(fp, "\t\tchannel = ltt_get_channel_from_index(trace, index);\n"); |
| 516 | fprintf(fp, "\t\tbuff = relay_reserve(channel->rchan, event_length, &resret);\n"); |
| 517 | fprintf(fp, "\t\tif(buff == NULL) {\n"); |
| 518 | fprintf(fp, "\t\t\t/* Buffer is full*/\n"); |
| 519 | fprintf(fp, "\t\t\t/* for debug BUG(); */\n"); // DEBUG! |
| 520 | fprintf(fp, "\t\t\tchannel->events_lost[smp_processor_id()]++;\n"); |
| 521 | fprintf(fp, "\t\t\tbreak;\n"); /* don't commit a NULL reservation! */ |
| 522 | fprintf(fp, "\t\t}\n"); |
| 523 | |
| 524 | /* DEBUG */ |
| 525 | fprintf(fp, "\t\tif(resret == 1) {\n"); |
| 526 | fprintf(fp, "printk(\"f%%lu e\%%u \", ltt_facility_%s_%X, event_%s);", |
| 527 | facName, checksum, ev->name); |
| 528 | fprintf(fp, "\t\t}\n"); |
| 529 | |
| 530 | /* Write the header */ |
| 531 | fprintf(fp, "\n"); |
| 532 | fprintf(fp, "\t\tltt_write_event_header(trace, channel, buff, \n" |
| 533 | "\t\t\t\tltt_facility_%s_%X, event_%s, length);\n", |
| 534 | facName, checksum, ev->name); |
| 535 | fprintf(fp, "\n"); |
| 536 | |
| 537 | //declare a char pointer if needed : starts at the end of the structs. |
| 538 | if(structCount + hasStrSeq > 1) { |
| 539 | fprintf(fp,"\t\tchar * ptr = (char*)buff + header_length"); |
| 540 | for(pos1=0;pos1<structCount;pos1++){ |
| 541 | fprintf(fp," + sizeof(struct %s_%s_%d)",ev->name, facName,pos1+1); |
| 542 | } |
| 543 | if(structCount + hasStrSeq > 1) fprintf(fp,";\n"); |
| 544 | } |
| 545 | |
| 546 | // Declare an alias pointer of the struct type to the beginning |
| 547 | // of the reserved area, just after the event header. |
| 548 | if(ev->type != 0) |
| 549 | fprintf(fp, "\t\t__1 = (struct %s_%s_1 *)(buff + header_length);\n", |
| 550 | ev->name, facName); |
| 551 | //allocate memory for new struct and initialize it |
| 552 | //if(whichTypeFirst == 1){ //struct first |
| 553 | //for(pos1=0;pos1<structCount;pos1++){ |
| 554 | // if(pos1==0) fprintf(fp, |
| 555 | // "\tstruct %s_%s_1 * __1 = (struct %s_%s_1 *)buff;\n", |
| 556 | // ev->name, facName,ev->name, facName); |
| 557 | //MD disabled else fprintf(fp, |
| 558 | // "\tstruct %s_%s_%d __%d;\n", |
| 559 | // ev->name, facName,pos1+1,pos1+1); |
| 560 | //} |
| 561 | //}else if(whichTypeFirst == 2){ |
| 562 | // for(pos1=0;pos1<structCount;pos1++) |
| 563 | // fprintf(fp,"\tstruct %s_%s_%d __%d;\n", |
| 564 | // ev->name, facName,pos1+1,pos1+1); |
| 565 | //} |
| 566 | fprintf(fp,"\n"); |
| 567 | |
| 568 | if(structCount) fprintf(fp,"\t\t//initialize structs\n"); |
| 569 | //flag = 0; |
| 570 | //structCount = 0; |
| 571 | if(ev->type != 0) |
| 572 | for(pos1 = 0; pos1 < ev->type->fields.position; pos1++){ |
| 573 | fld = (field *)ev->type->fields.array[pos1]; |
| 574 | td = fld->type; |
| 575 | if(td->type != ARRAY && td->type != SEQUENCE && td->type != STRING){ |
| 576 | //if(flag == 0){ |
| 577 | // flag = 1; |
| 578 | // structCount++; |
| 579 | // if(structCount > 1) fprintf(fp,"\n"); |
| 580 | //} |
| 581 | fprintf(fp, "\t\t__1->%s = %s;\n", fld->name, fld->name ); |
| 582 | |
| 583 | //if(structCount == 1 && whichTypeFirst == 1) |
| 584 | // fprintf(fp, "\t__1->%s = %s;\n",fld->name,fld->name ); |
| 585 | //else |
| 586 | // fprintf(fp, "\t__%d.%s = %s;\n",structCount ,fld->name,fld->name); |
| 587 | } |
| 588 | //else flag = 0; |
| 589 | } |
| 590 | if(structCount) fprintf(fp,"\n"); |
| 591 | //set ptr to the end of first struct if needed; |
| 592 | if(structCount + hasStrSeq > 1){ |
| 593 | fprintf(fp,"\n\t\t//set ptr to the end of the first struct\n"); |
| 594 | fprintf(fp,"\t\tptr += sizeof(struct %s_%s_1);\n\n",ev->name, facName); |
| 595 | } |
| 596 | |
| 597 | //copy struct, sequence and string to buffer |
| 598 | seqCount = 0; |
| 599 | strCount = 0; |
| 600 | flag = 0; |
| 601 | structCount = 0; |
| 602 | if(ev->type != 0) |
| 603 | for(pos1 = 0; pos1 < ev->type->fields.position; pos1++){ |
| 604 | fld = (field *)ev->type->fields.array[pos1]; |
| 605 | td = fld->type; |
| 606 | // if(td->type != STRING && td->type != SEQUENCE && td->type != ARRAY){ |
| 607 | // if(flag == 0) structCount++; |
| 608 | // flag++; |
| 609 | // if((structCount > 1 || whichTypeFirst == 2) && flag == 1){ |
| 610 | // assert(0); // MD : disabled ! |
| 611 | // fprintf(fp,"\t//copy struct to buffer\n"); |
| 612 | // fprintf(fp,"\tmemcpy(ptr, &__%d, sizeof(struct %s_%s_%d));\n", |
| 613 | // structCount, ev->name, facName,structCount); |
| 614 | // fprintf(fp,"\tptr += sizeof(struct %s_%s_%d);\n\n", |
| 615 | // ev->name, facName,structCount); |
| 616 | // } |
| 617 | // } |
| 618 | //else if(td->type == SEQUENCE){ |
| 619 | if(td->type == SEQUENCE){ |
| 620 | flag = 0; |
| 621 | fprintf(fp,"\t\t//copy sequence length and sequence to buffer\n"); |
| 622 | fprintf(fp,"\t\t*ptr = seqlength_%d;\n",++seqCount); |
| 623 | fprintf(fp,"\t\tptr += sizeof(%s);\n",uintOutputTypes[td->size]); |
| 624 | fprintf(fp,"\t\tmemcpy(ptr, %s, sizeof(%s) * seqlength_%d);\n", |
| 625 | fld->name, getTypeStr(td), seqCount); |
| 626 | fprintf(fp,"\t\tptr += sizeof(%s) * seqlength_%d;\n\n", |
| 627 | getTypeStr(td), seqCount); |
| 628 | } |
| 629 | else if(td->type==STRING){ |
| 630 | flag = 0; |
| 631 | fprintf(fp,"\t\t//copy string to buffer\n"); |
| 632 | fprintf(fp,"\t\tif(strlength_%d > 0){\n",++strCount); |
| 633 | fprintf(fp,"\t\t\tmemcpy(ptr, %s, strlength_%d + 1);\n", |
| 634 | fld->name, strCount); |
| 635 | fprintf(fp,"\t\t\tptr += strlength_%d + 1;\n",strCount); |
| 636 | fprintf(fp,"\t\t}else{\n"); |
| 637 | fprintf(fp,"\t\t\t*ptr = '\\0';\n"); |
| 638 | fprintf(fp,"\t\t\tptr += 1;\n"); |
| 639 | fprintf(fp,"\t\t}\n\n"); |
| 640 | }else if(td->type==ARRAY){ |
| 641 | flag = 0; |
| 642 | fprintf(fp,"\t//copy array to buffer\n"); |
| 643 | fprintf(fp,"\tmemcpy(ptr, %s, sizeof(%s) * %d);\n", |
| 644 | fld->name, getTypeStr(td), td->size); |
| 645 | fprintf(fp,"\tptr += sizeof(%s) * %d;\n\n", getTypeStr(td), td->size); |
| 646 | } |
| 647 | } |
| 648 | if(structCount + seqCount > 1) fprintf(fp,"\n"); |
| 649 | |
| 650 | fprintf(fp,"\n"); |
| 651 | fprintf(fp, "\t\t/* Commit the work */\n"); |
| 652 | fprintf(fp, "\t\trelay_commit(channel->rchan->buf[smp_processor_id()],\n" |
| 653 | "\t\t\t\tbuff, event_length);\n"); |
| 654 | |
| 655 | /* End of traces iteration */ |
| 656 | fprintf(fp, "\t}\n\n"); |
| 657 | |
| 658 | fprintf(fp, "\n"); |
| 659 | fprintf(fp, "unlock_traces:\n"); |
| 660 | fprintf(fp, "\tread_unlock(<t_traces.traces_rwlock);\n"); |
| 661 | |
| 662 | fprintf(fp, "unlock:\n"); |
| 663 | fprintf(fp, "\tltt_nesting[smp_processor_id()]--;\n"); |
| 664 | fprintf(fp, "\t/* Re-enable interrupts */\n"); |
| 665 | fprintf(fp, "\tlocal_irq_restore(_flags);\n"); |
| 666 | fprintf(fp, "\tpreempt_enable();\n"); |
| 667 | //fprintf(fp, "\tpreempt_check_resched();\n"); |
| 668 | |
| 669 | //call trace function |
| 670 | //fprintf(fp,"\n\t//call trace function\n"); |
| 671 | //fprintf(fp,"\tltt_log_event(ltt_facility_%s_%X, %s, bufLength, buff);\n",facName,checksum,ev->name); |
| 672 | fprintf(fp,"}\n\n\n"); |
| 673 | } |
| 674 | |
| 675 | } |
| 676 | |
| 677 | /***************************************************************************** |
| 678 | *Function name |
| 679 | * getTypeStr : generate type string |
| 680 | *Input Params |
| 681 | * td : a type descriptor |
| 682 | *Return Values |
| 683 | * char * : type string |
| 684 | ****************************************************************************/ |
| 685 | char * getTypeStr(type_descriptor * td){ |
| 686 | type_descriptor * t ; |
| 687 | |
| 688 | switch(td->type){ |
| 689 | case INT: |
| 690 | return intOutputTypes[td->size]; |
| 691 | case UINT: |
| 692 | return uintOutputTypes[td->size]; |
| 693 | case POINTER: |
| 694 | return "void *"; |
| 695 | case LONG: |
| 696 | return "long"; |
| 697 | case ULONG: |
| 698 | return "unsigned long"; |
| 699 | case SIZE_T: |
| 700 | return "size_t"; |
| 701 | case SSIZE_T: |
| 702 | return "ssize_t"; |
| 703 | case OFF_T: |
| 704 | return "off_t"; |
| 705 | case FLOAT: |
| 706 | return floatOutputTypes[td->size]; |
| 707 | case STRING: |
| 708 | return "const char"; |
| 709 | case ENUM: |
| 710 | return uintOutputTypes[td->size]; |
| 711 | case ARRAY: |
| 712 | case SEQUENCE: |
| 713 | t = td->nested_type; |
| 714 | switch(t->type){ |
| 715 | case INT: |
| 716 | return intOutputTypes[t->size]; |
| 717 | case UINT: |
| 718 | return uintOutputTypes[t->size]; |
| 719 | case POINTER: |
| 720 | return "void *"; |
| 721 | case LONG: |
| 722 | return "long"; |
| 723 | case ULONG: |
| 724 | return "unsigned long"; |
| 725 | case SIZE_T: |
| 726 | return "size_t"; |
| 727 | case SSIZE_T: |
| 728 | return "ssize_t"; |
| 729 | case OFF_T: |
| 730 | return "off_t"; |
| 731 | case FLOAT: |
| 732 | return floatOutputTypes[t->size]; |
| 733 | case STRING: |
| 734 | return "const char"; |
| 735 | case ENUM: |
| 736 | return uintOutputTypes[t->size]; |
| 737 | default : |
| 738 | error_callback(NULL,"Nested struct is not supportted"); |
| 739 | break; |
| 740 | } |
| 741 | break; |
| 742 | case STRUCT: //for now we do not support nested struct |
| 743 | error_callback(NULL,"Nested struct is not supportted"); |
| 744 | break; |
| 745 | default: |
| 746 | error_callback(NULL,"No type information"); |
| 747 | break; |
| 748 | } |
| 749 | return NULL; |
| 750 | } |
| 751 | |
| 752 | /***************************************************************************** |
| 753 | *Function name |
| 754 | * generateLoaderfile: generate a facility loaded .h file |
| 755 | *Input Params |
| 756 | * fp : file to be written to |
| 757 | * facName : name of facility |
| 758 | * nbEvent : number of events in the facility |
| 759 | * checksum : checksum for the facility |
| 760 | ****************************************************************************/ |
| 761 | void generateLoaderfile(FILE * fp, char * facName, int nbEvent, unsigned long checksum, char *capname){ |
| 762 | fprintf(fp, "#ifndef _LTT_FACILITY_LOADER_%s_H_\n",capname); |
| 763 | fprintf(fp, "#define _LTT_FACILITY_LOADER_%s_H_\n\n",capname); |
| 764 | fprintf(fp,"#include <linux/ltt-facilities.h>\n", facName, checksum); |
| 765 | fprintf(fp,"ltt_facility_t\tltt_facility_%s;\n", facName, checksum); |
| 766 | fprintf(fp,"ltt_facility_t\tltt_facility_%s_%X;\n\n", facName, checksum); |
| 767 | |
| 768 | fprintf(fp,"#define LTT_FACILITY_SYMBOL\t\t\t\t\t\t\tltt_facility_%s\n", |
| 769 | facName); |
| 770 | fprintf(fp,"#define LTT_FACILITY_CHECKSUM_SYMBOL\t\tltt_facility_%s_%X\n", |
| 771 | facName, checksum); |
| 772 | fprintf(fp,"#define LTT_FACILITY_CHECKSUM\t\t\t\t\t\t0x%X\n", checksum); |
| 773 | fprintf(fp,"#define LTT_FACILITY_NAME\t\t\t\t\t\t\t\t\"%s\"\n", facName); |
| 774 | fprintf(fp,"#define LTT_FACILITY_NUM_EVENTS\t\t\t\t\t%d\n\n", nbEvent); |
| 775 | fprintf(fp, "#endif //_LTT_FACILITY_LOADER_%s_H_\n",capname); |
| 776 | } |
| 777 | |
| 778 | void generateCfile(FILE * fp, char * filefacname){ |
| 779 | |
| 780 | fprintf(fp, "/*\n"); |
| 781 | fprintf(fp, " * ltt-facility-loader-%s.c\n", filefacname); |
| 782 | fprintf(fp, " *\n"); |
| 783 | fprintf(fp, " * (C) Copyright 2005 - \n"); |
| 784 | fprintf(fp, " * Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)\n"); |
| 785 | fprintf(fp, " *\n"); |
| 786 | fprintf(fp, " * Contains the LTT facility loader.\n"); |
| 787 | fprintf(fp, " *\n"); |
| 788 | fprintf(fp, " */\n"); |
| 789 | fprintf(fp, "\n"); |
| 790 | fprintf(fp, "\n"); |
| 791 | fprintf(fp, "#include <linux/ltt-facilities.h>\n"); |
| 792 | fprintf(fp, "#include <linux/module.h>\n"); |
| 793 | fprintf(fp, "#include <linux/init.h>\n"); |
| 794 | fprintf(fp, "#include <linux/config.h>\n"); |
| 795 | fprintf(fp, "#include \"ltt-facility-loader-%s.h\"\n", filefacname); |
| 796 | fprintf(fp, "\n"); |
| 797 | fprintf(fp, "\n"); |
| 798 | fprintf(fp, "#ifdef CONFIG_LTT\n"); |
| 799 | fprintf(fp, "\n"); |
| 800 | fprintf(fp, "EXPORT_SYMBOL(LTT_FACILITY_SYMBOL);\n"); |
| 801 | fprintf(fp, "EXPORT_SYMBOL(LTT_FACILITY_CHECKSUM_SYMBOL);\n"); |
| 802 | fprintf(fp, "\n"); |
| 803 | fprintf(fp, "static const char ltt_facility_name[] = LTT_FACILITY_NAME;\n"); |
| 804 | fprintf(fp, "\n"); |
| 805 | fprintf(fp, "#define SYMBOL_STRING(sym) #sym\n"); |
| 806 | fprintf(fp, "\n"); |
| 807 | fprintf(fp, "static struct ltt_facility facility = {\n"); |
| 808 | fprintf(fp, "\t.name = ltt_facility_name,\n"); |
| 809 | fprintf(fp, "\t.num_events = LTT_FACILITY_NUM_EVENTS,\n"); |
| 810 | fprintf(fp, "\t.checksum = LTT_FACILITY_CHECKSUM,\n"); |
| 811 | fprintf(fp, "\t.symbol = SYMBOL_STRING(LTT_FACILITY_SYMBOL)\n"); |
| 812 | fprintf(fp, "};\n"); |
| 813 | fprintf(fp, "\n"); |
| 814 | fprintf(fp, "#ifndef MODULE\n"); |
| 815 | fprintf(fp, "\n"); |
| 816 | fprintf(fp, "/* Built-in facility. */\n"); |
| 817 | fprintf(fp, "\n"); |
| 818 | fprintf(fp, "static int __init facility_init(void)\n"); |
| 819 | fprintf(fp, "{\n"); |
| 820 | fprintf(fp, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init in kernel\\n\");\n", filefacname); |
| 821 | fprintf(fp, "\n"); |
| 822 | fprintf(fp, "\tLTT_FACILITY_SYMBOL = ltt_facility_builtin_register(&facility);\n"); |
| 823 | fprintf(fp, "\tLTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;\n"); |
| 824 | fprintf(fp, "\t\n"); |
| 825 | fprintf(fp, "\treturn LTT_FACILITY_SYMBOL;\n"); |
| 826 | fprintf(fp, "}\n"); |
| 827 | fprintf(fp, "__initcall(facility_init);\n"); |
| 828 | fprintf(fp, "\n"); |
| 829 | fprintf(fp, "\n"); |
| 830 | fprintf(fp, "\n"); |
| 831 | fprintf(fp, "#else \n"); |
| 832 | fprintf(fp, "\n"); |
| 833 | fprintf(fp, "/* Dynamic facility. */\n"); |
| 834 | fprintf(fp, "\n"); |
| 835 | fprintf(fp, "static int __init facility_init(void)\n"); |
| 836 | fprintf(fp, "{\n"); |
| 837 | fprintf(fp, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init dynamic\\n\");\n", filefacname); |
| 838 | fprintf(fp, "\n"); |
| 839 | fprintf(fp, "\tLTT_FACILITY_SYMBOL = ltt_facility_dynamic_register(&facility);\n"); |
| 840 | fprintf(fp, "\tLTT_FACILITY_SYMBOL_CHECKSUM = LTT_FACILITY_SYMBOL;\n"); |
| 841 | fprintf(fp, "\n"); |
| 842 | fprintf(fp, "\treturn LTT_FACILITY_SYMBOL;\n"); |
| 843 | fprintf(fp, "}\n"); |
| 844 | fprintf(fp, "\n"); |
| 845 | fprintf(fp, "static void __exit facility_exit(void)\n"); |
| 846 | fprintf(fp, "{\n"); |
| 847 | fprintf(fp, "\tint err;\n"); |
| 848 | fprintf(fp, "\n"); |
| 849 | fprintf(fp, "\terr = ltt_facility_dynamic_unregister(LTT_FACILITY_SYMBOL);\n"); |
| 850 | fprintf(fp, "\tif(err != 0)\n"); |
| 851 | fprintf(fp, "\t\tprintk(KERN_ERR \"LTT : Error in unregistering facility.\\n\");\n"); |
| 852 | fprintf(fp, "\n"); |
| 853 | fprintf(fp, "}\n"); |
| 854 | fprintf(fp, "\n"); |
| 855 | fprintf(fp, "module_init(facility_init)\n"); |
| 856 | fprintf(fp, "module_exit(facility_exit)\n"); |
| 857 | fprintf(fp, "\n"); |
| 858 | fprintf(fp, "\n"); |
| 859 | fprintf(fp, "MODULE_LICENSE(\"GPL\");\n"); |
| 860 | fprintf(fp, "MODULE_AUTHOR(\"Mathieu Desnoyers\");\n"); |
| 861 | fprintf(fp, "MODULE_DESCRIPTION(\"Linux Trace Toolkit Facility\");\n"); |
| 862 | fprintf(fp, "\n"); |
| 863 | fprintf(fp, "#endif //MODULE\n"); |
| 864 | fprintf(fp, "\n"); |
| 865 | fprintf(fp, "#endif //CONFIG_LTT\n"); |
| 866 | } |
| 867 | |
| 868 | |