1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _CTFTOOLS_H 27 #define _CTFTOOLS_H 28 29 /* 30 * Functions and data structures used in the manipulation of stabs and CTF data 31 */ 32 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <stdarg.h> 36 #include <libelf.h> 37 #include <gelf.h> 38 #include <pthread.h> 39 40 #include <sys/ccompile.h> 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 #include "list.h" 47 #include "hash.h" 48 49 #ifndef DEBUG_LEVEL 50 #define DEBUG_LEVEL 0 51 #endif 52 #ifndef DEBUG_PARSE 53 #define DEBUG_PARSE 0 54 #endif 55 56 #ifndef DEBUG_STREAM 57 #define DEBUG_STREAM stderr 58 #endif 59 60 #ifndef MAX 61 #define MAX(a, b) ((a) < (b) ? (b) : (a)) 62 #endif 63 64 #ifndef MIN 65 #define MIN(a, b) ((a) > (b) ? (b) : (a)) 66 #endif 67 68 #define TRUE 1 69 #define FALSE 0 70 71 #define CTF_ELF_SCN_NAME ".SUNW_ctf" 72 73 #define CTF_LABEL_LASTIDX -1 74 75 #define CTF_DEFAULT_LABEL "*** No Label Provided ***" 76 77 /* 78 * Default hash sizes 79 */ 80 #define TDATA_LAYOUT_HASH_SIZE 8191 /* A tdesc hash based on layout */ 81 #define TDATA_ID_HASH_SIZE 997 /* A tdesc hash based on type id */ 82 #define IIDESC_HASH_SIZE 8191 /* Hash of iidesc's */ 83 84 /* 85 * The default function argument array size. We'll realloc the array larger 86 * if we need to, but we want a default value that will allow us to avoid 87 * reallocation in the common case. 88 */ 89 #define FUNCARG_DEF 5 90 91 extern const char *progname; 92 extern int debug_level; 93 extern int debug_parse; 94 extern char *curhdr; 95 96 /* 97 * This is a partial copy of the stab.h that DevPro includes with their 98 * compiler. 99 */ 100 typedef struct stab { 101 uint32_t n_strx; 102 uint8_t n_type; 103 int8_t n_other; 104 int16_t n_desc; 105 uint32_t n_value; 106 } stab_t; 107 108 #define N_GSYM 0x20 /* global symbol: name,,0,type,0 */ 109 #define N_FUN 0x24 /* procedure: name,,0,linenumber,0 */ 110 #define N_STSYM 0x26 /* static symbol: name,,0,type,0 or section relative */ 111 #define N_LCSYM 0x28 /* .lcomm symbol: name,,0,type,0 or section relative */ 112 #define N_ROSYM 0x2c /* ro_data: name,,0,type,0 or section relative */ 113 #define N_OPT 0x3c /* compiler options */ 114 #define N_RSYM 0x40 /* register sym: name,,0,type,register */ 115 #define N_SO 0x64 /* source file name: name,,0,0,0 */ 116 #define N_LSYM 0x80 /* local sym: name,,0,type,offset */ 117 #define N_SOL 0x84 /* #included file name: name,,0,0,0 */ 118 #define N_PSYM 0xa0 /* parameter: name,,0,type,offset */ 119 #define N_LBRAC 0xc0 /* left bracket: 0,,0,nesting level,function relative */ 120 #define N_RBRAC 0xe0 /* right bracket: 0,,0,nesting level,func relative */ 121 #define N_BINCL 0x82 /* header file: name,,0,0,0 */ 122 #define N_EINCL 0xa2 /* end of include file */ 123 124 /* 125 * Nodes in the type tree 126 * 127 * Each node consists of a single tdesc_t, with one of several auxiliary 128 * structures linked in via the `data' union. 129 */ 130 131 /* The type of tdesc_t node */ 132 typedef enum stabtype { 133 STABTYPE_FIRST, /* do not use */ 134 INTRINSIC, 135 POINTER, 136 ARRAY, 137 FUNCTION, 138 STRUCT, 139 UNION, 140 ENUM, 141 FORWARD, 142 TYPEDEF, 143 TYPEDEF_UNRES, 144 VOLATILE, 145 CONST, 146 RESTRICT, 147 STABTYPE_LAST /* do not use */ 148 } stabtype_t; 149 150 typedef struct tdesc tdesc_t; 151 152 /* Auxiliary structure for array tdesc_t */ 153 typedef struct ardef { 154 tdesc_t *ad_contents; 155 tdesc_t *ad_idxtype; 156 uint_t ad_nelems; 157 } ardef_t; 158 159 /* Auxiliary structure for structure/union tdesc_t */ 160 typedef struct mlist { 161 int ml_offset; /* Offset from start of structure (in bits) */ 162 uint_t ml_size; /* Member size (in bits) */ 163 char *ml_name; /* Member name */ 164 struct tdesc *ml_type; /* Member type */ 165 struct mlist *ml_next; /* Next member */ 166 } mlist_t; 167 168 /* Auxiliary structure for enum tdesc_t */ 169 typedef struct elist { 170 char *el_name; 171 int el_number; 172 struct elist *el_next; 173 } elist_t; 174 175 /* Auxiliary structure for intrinsics (integers and reals) */ 176 typedef enum { 177 INTR_INT, 178 INTR_REAL 179 } intrtype_t; 180 181 typedef struct intr { 182 intrtype_t intr_type; 183 int intr_signed; 184 union { 185 char _iformat; 186 int _fformat; 187 } _u; 188 int intr_offset; 189 int intr_nbits; 190 } intr_t; 191 192 #define intr_iformat _u._iformat 193 #define intr_fformat _u._fformat 194 195 typedef struct fnarg { 196 char *fna_name; 197 struct tdesc *fna_type; 198 } fnarg_t; 199 200 #define FN_F_GLOBAL 0x1 201 #define FN_F_VARARGS 0x2 202 203 typedef struct fndef { 204 struct tdesc *fn_ret; 205 uint_t fn_nargs; 206 tdesc_t **fn_args; 207 uint_t fn_vargs; 208 } fndef_t; 209 210 typedef int32_t tid_t; 211 212 /* 213 * The tdesc_t (Type DESCription) is the basic node type used in the stabs data 214 * structure. Each data node gets a tdesc structure. Each node is linked into 215 * a directed graph (think of it as a tree with multiple roots and multiple 216 * leaves), with the root nodes at the top, and intrinsics at the bottom. The 217 * root nodes, which are pointed to by iidesc nodes, correspond to the types, 218 * globals, and statics defined by the stabs. 219 */ 220 struct tdesc { 221 char *t_name; 222 tdesc_t *t_next; /* Name hash next pointer */ 223 224 tid_t t_id; 225 tdesc_t *t_hash; /* ID hash next pointer */ 226 227 stabtype_t t_type; 228 int t_size; /* Size in bytes of object represented by this node */ 229 230 union { 231 intr_t *intr; /* int, real */ 232 tdesc_t *tdesc; /* ptr, typedef, vol, const, restr */ 233 ardef_t *ardef; /* array */ 234 mlist_t *members; /* struct, union */ 235 elist_t *emem; /* enum */ 236 fndef_t *fndef; /* function - first is return type */ 237 } t_data; 238 239 int t_flags; 240 int t_vgen; /* Visitation generation (see traverse.c) */ 241 int t_emark; /* Equality mark (see equiv_cb() in merge.c) */ 242 }; 243 244 #define t_intr t_data.intr 245 #define t_tdesc t_data.tdesc 246 #define t_ardef t_data.ardef 247 #define t_members t_data.members 248 #define t_emem t_data.emem 249 #define t_fndef t_data.fndef 250 251 #define TDESC_F_ISROOT 0x1 /* Has an iidesc_t (see below) */ 252 #define TDESC_F_GLOBAL 0x2 253 #define TDESC_F_RESOLVED 0x4 254 255 /* 256 * iidesc_t (Interesting Item DESCription) nodes point to tdesc_t nodes that 257 * correspond to "interesting" stabs. A stab is interesting if it defines a 258 * global or static variable, a global or static function, or a data type. 259 */ 260 typedef enum iitype { 261 II_NOT = 0, 262 II_GFUN, /* Global function */ 263 II_SFUN, /* Static function */ 264 II_GVAR, /* Global variable */ 265 II_SVAR, /* Static variable */ 266 II_PSYM, /* Function argument */ 267 II_SOU, /* Struct or union */ 268 II_TYPE /* Type (typedef) */ 269 } iitype_t; 270 271 typedef struct iidesc { 272 iitype_t ii_type; 273 char *ii_name; 274 tdesc_t *ii_dtype; 275 char *ii_owner; /* File that defined this node */ 276 int ii_flags; 277 278 /* Function arguments (if any) */ 279 int ii_nargs; 280 tdesc_t **ii_args; 281 int ii_vargs; /* Function uses varargs */ 282 } iidesc_t; 283 284 #define IIDESC_F_USED 0x1 /* Write this iidesc out */ 285 286 /* 287 * labelent_t nodes identify labels and corresponding type ranges associated 288 * with them. The label in a given labelent_t is associated with types with 289 * ids <= le_idx. 290 */ 291 typedef struct labelent { 292 char *le_name; 293 int le_idx; 294 } labelent_t; 295 296 /* 297 * The tdata_t (Type DATA) structure contains or references all type data for 298 * a given file or, during merging, several files. 299 */ 300 typedef struct tdata { 301 int td_curemark; /* Equality mark (see merge.c) */ 302 int td_curvgen; /* Visitation generation (see traverse.c) */ 303 int td_nextid; /* The ID for the next tdesc_t created */ 304 hash_t *td_iihash; /* The iidesc_t nodes for this file */ 305 306 hash_t *td_layouthash; /* The tdesc nodes, hashed by structure */ 307 hash_t *td_idhash; /* The tdesc nodes, hashed by type id */ 308 list_t *td_fwdlist; /* All forward declaration tdesc nodes */ 309 310 char *td_parlabel; /* Top label uniq'd against in parent */ 311 char *td_parname; /* Basename of parent */ 312 list_t *td_labels; /* Labels and their type ranges */ 313 314 pthread_mutex_t td_mergelock; 315 316 int td_ref; 317 } tdata_t; 318 319 /* 320 * By design, the iidesc hash is heterogeneous. The CTF emitter, on the 321 * other hand, needs to be able to access the elements of the list by type, 322 * and in a specific sorted order. An iiburst holds these elements in that 323 * order. (A burster is a machine that separates carbon-copy forms) 324 */ 325 typedef struct iiburst { 326 int iib_nfuncs; 327 int iib_curfunc; 328 iidesc_t **iib_funcs; 329 330 int iib_nobjts; 331 int iib_curobjt; 332 iidesc_t **iib_objts; 333 334 list_t *iib_types; 335 int iib_maxtypeid; 336 337 tdata_t *iib_td; 338 struct tdtrav_data *iib_tdtd; /* tdtrav_data_t */ 339 } iiburst_t; 340 341 typedef struct ctf_buf ctf_buf_t; 342 343 typedef struct symit_data symit_data_t; 344 345 /* fixup_tdescs.c */ 346 void cvt_fixstabs(tdata_t *); 347 void cvt_fixups(tdata_t *, size_t); 348 349 /* ctf.c */ 350 caddr_t ctf_gen(iiburst_t *, size_t *, int); 351 tdata_t *ctf_load(char *, caddr_t, size_t, symit_data_t *, char *); 352 353 /* iidesc.c */ 354 iidesc_t *iidesc_new(char *); 355 int iidesc_hash(int, void *); 356 void iter_iidescs_by_name(tdata_t *, const char *, 357 int (*)(void *, void *), void *); 358 iidesc_t *iidesc_dup(iidesc_t *); 359 iidesc_t *iidesc_dup_rename(iidesc_t *, char const *, char const *); 360 void iidesc_add(hash_t *, iidesc_t *); 361 void iidesc_free(void *, void *); 362 int iidesc_count_type(void *, void *); 363 void iidesc_stats(hash_t *); 364 int iidesc_dump(iidesc_t *); 365 366 /* input.c */ 367 typedef enum source_types { 368 SOURCE_NONE = 0, 369 SOURCE_UNKNOWN = 1, 370 SOURCE_C = 2, 371 SOURCE_S = 4 372 } source_types_t; 373 374 source_types_t built_source_types(Elf *, const char *); 375 int count_files(char **, int); 376 int read_ctf(char **, int, char *, int (*)(tdata_t *, char *, void *), 377 void *, int); 378 int read_ctf_save_cb(tdata_t *, char *, void *); 379 symit_data_t *symit_new(Elf *, const char *); 380 void symit_reset(symit_data_t *); 381 char *symit_curfile(symit_data_t *); 382 GElf_Sym *symit_next(symit_data_t *, int); 383 char *symit_name(symit_data_t *); 384 void symit_free(symit_data_t *); 385 386 /* merge.c */ 387 void merge_into_master(tdata_t *, tdata_t *, tdata_t *, int); 388 389 /* output.c */ 390 #define CTF_FUZZY_MATCH 0x1 /* match local symbols to global CTF */ 391 #define CTF_USE_DYNSYM 0x2 /* use .dynsym not .symtab */ 392 #define CTF_COMPRESS 0x4 /* compress CTF output */ 393 #define CTF_KEEP_STABS 0x8 /* keep .stabs sections */ 394 #define CTF_SWAP_BYTES 0x10 /* target byte order is different from host */ 395 396 void write_ctf(tdata_t *, const char *, const char *, int); 397 398 /* parse.c */ 399 void parse_init(tdata_t *); 400 void parse_finish(tdata_t *); 401 int parse_stab(stab_t *, char *, iidesc_t **); 402 tdesc_t *lookup(int); 403 tdesc_t *lookupname(const char *); 404 void check_hash(void); 405 void resolve_typed_bitfields(void); 406 407 /* stabs.c */ 408 int stabs_read(tdata_t *, Elf *, char *); 409 410 /* dwarf.c */ 411 int dw_read(tdata_t *, Elf *, char *); 412 const char *dw_tag2str(uint_t); 413 414 /* tdata.c */ 415 tdata_t *tdata_new(void); 416 void tdata_free(tdata_t *); 417 void tdata_build_hashes(tdata_t *td); 418 const char *tdesc_name(tdesc_t *); 419 int tdesc_idhash(int, void *); 420 int tdesc_idcmp(void *, void *); 421 int tdesc_namehash(int, void *); 422 int tdesc_namecmp(void *, void *); 423 int tdesc_layouthash(int, void *); 424 int tdesc_layoutcmp(void *, void *); 425 void tdesc_free(tdesc_t *); 426 void tdata_label_add(tdata_t *, const char *, int); 427 labelent_t *tdata_label_top(tdata_t *); 428 int tdata_label_find(tdata_t *, char *); 429 void tdata_label_free(tdata_t *); 430 void tdata_merge(tdata_t *, tdata_t *); 431 void tdata_label_newmax(tdata_t *, int); 432 433 /* util.c */ 434 int streq(const char *, const char *); 435 int findelfsecidx(Elf *, const char *, const char *); 436 size_t elf_ptrsz(Elf *); 437 char *mktmpname(const char *, const char *); 438 void terminate(const char *, ...) __NORETURN; 439 void aborterr(const char *, ...) __NORETURN; 440 void set_terminate_cleanup(void (*)(void)); 441 void elfterminate(const char *, const char *, ...); 442 void warning(const char *, ...); 443 void vadebug(int, const char *, va_list); 444 void debug(int, const char *, ...); 445 446 447 void watch_dump(int); 448 void watch_set(void *, int); 449 450 #ifdef __cplusplus 451 } 452 #endif 453 454 #endif /* _CTFTOOLS_H */ 455