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.
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.
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]
22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
30 * Functions and data structures used in the manipulation of stabs and CTF data
40 #include <sys/ccompile.h>
41 #include <sys/endian.h>
58 #define DEBUG_STREAM stderr
62 #define MAX(a, b) ((a) < (b) ? (b) : (a))
66 #define MIN(a, b) ((a) > (b) ? (b) : (a))
69 /* Sanity check for cross-build bootstrap tools */
70 #if !defined(BYTE_ORDER)
71 #error "Missing BYTE_ORDER defines"
72 #elif !defined(_LITTLE_ENDIAN)
73 #error "Missing _LITTLE_ENDIAN defines"
74 #elif !defined(_BIG_ENDIAN)
75 #error "Missing _BIG_ENDIAN defines"
81 #define CTF_ELF_SCN_NAME ".SUNW_ctf"
83 #define CTF_LABEL_LASTIDX -1
85 #define CTF_DEFAULT_LABEL "*** No Label Provided ***"
90 #define TDATA_LAYOUT_HASH_SIZE 8191 /* A tdesc hash based on layout */
91 #define TDATA_ID_HASH_SIZE 997 /* A tdesc hash based on type id */
92 #define IIDESC_HASH_SIZE 8191 /* Hash of iidesc's */
95 * The default function argument array size. We'll realloc the array larger
96 * if we need to, but we want a default value that will allow us to avoid
97 * reallocation in the common case.
101 extern const char *progname;
102 extern int debug_level;
103 extern int debug_parse;
107 * This is a partial copy of the stab.h that DevPro includes with their
110 typedef struct stab {
118 #define N_GSYM 0x20 /* global symbol: name,,0,type,0 */
119 #define N_FUN 0x24 /* procedure: name,,0,linenumber,0 */
120 #define N_STSYM 0x26 /* static symbol: name,,0,type,0 or section relative */
121 #define N_LCSYM 0x28 /* .lcomm symbol: name,,0,type,0 or section relative */
122 #define N_ROSYM 0x2c /* ro_data: name,,0,type,0 or section relative */
123 #define N_OPT 0x3c /* compiler options */
124 #define N_RSYM 0x40 /* register sym: name,,0,type,register */
125 #define N_SO 0x64 /* source file name: name,,0,0,0 */
126 #define N_LSYM 0x80 /* local sym: name,,0,type,offset */
127 #define N_SOL 0x84 /* #included file name: name,,0,0,0 */
128 #define N_PSYM 0xa0 /* parameter: name,,0,type,offset */
129 #define N_LBRAC 0xc0 /* left bracket: 0,,0,nesting level,function relative */
130 #define N_RBRAC 0xe0 /* right bracket: 0,,0,nesting level,func relative */
131 #define N_BINCL 0x82 /* header file: name,,0,0,0 */
132 #define N_EINCL 0xa2 /* end of include file */
135 * Nodes in the type tree
137 * Each node consists of a single tdesc_t, with one of several auxiliary
138 * structures linked in via the `data' union.
141 /* The type of tdesc_t node */
142 typedef enum stabtype {
143 STABTYPE_FIRST, /* do not use */
157 STABTYPE_LAST /* do not use */
160 typedef struct tdesc tdesc_t;
162 /* Auxiliary structure for array tdesc_t */
163 typedef struct ardef {
164 tdesc_t *ad_contents;
169 /* Auxiliary structure for structure/union tdesc_t */
170 typedef struct mlist {
171 int ml_offset; /* Offset from start of structure (in bits) */
172 int ml_size; /* Member size (in bits) */
173 char *ml_name; /* Member name */
174 struct tdesc *ml_type; /* Member type */
175 struct mlist *ml_next; /* Next member */
178 /* Auxiliary structure for enum tdesc_t */
179 typedef struct elist {
182 struct elist *el_next;
185 /* Auxiliary structure for intrinsics (integers and reals) */
191 typedef struct intr {
192 intrtype_t intr_type;
202 #define intr_iformat _u._iformat
203 #define intr_fformat _u._fformat
205 typedef struct fnarg {
207 struct tdesc *fna_type;
210 #define FN_F_GLOBAL 0x1
211 #define FN_F_VARARGS 0x2
213 typedef struct fndef {
214 struct tdesc *fn_ret;
220 typedef int32_t tid_t;
223 * The tdesc_t (Type DESCription) is the basic node type used in the stabs data
224 * structure. Each data node gets a tdesc structure. Each node is linked into
225 * a directed graph (think of it as a tree with multiple roots and multiple
226 * leaves), with the root nodes at the top, and intrinsics at the bottom. The
227 * root nodes, which are pointed to by iidesc nodes, correspond to the types,
228 * globals, and statics defined by the stabs.
232 tdesc_t *t_next; /* Name hash next pointer */
235 tdesc_t *t_hash; /* ID hash next pointer */
238 int t_size; /* Size in bytes of object represented by this node */
241 intr_t *intr; /* int, real */
242 tdesc_t *tdesc; /* ptr, typedef, vol, const, restr */
243 ardef_t *ardef; /* array */
244 mlist_t *members; /* struct, union */
245 elist_t *emem; /* enum */
246 fndef_t *fndef; /* function - first is return type */
250 int t_vgen; /* Visitation generation (see traverse.c) */
251 int t_emark; /* Equality mark (see equiv_cb() in merge.c) */
254 #define t_intr t_data.intr
255 #define t_tdesc t_data.tdesc
256 #define t_ardef t_data.ardef
257 #define t_members t_data.members
258 #define t_emem t_data.emem
259 #define t_fndef t_data.fndef
261 #define TDESC_F_ISROOT 0x1 /* Has an iidesc_t (see below) */
262 #define TDESC_F_GLOBAL 0x2
263 #define TDESC_F_RESOLVED 0x4
266 * iidesc_t (Interesting Item DESCription) nodes point to tdesc_t nodes that
267 * correspond to "interesting" stabs. A stab is interesting if it defines a
268 * global or static variable, a global or static function, or a data type.
270 typedef enum iitype {
272 II_GFUN, /* Global function */
273 II_SFUN, /* Static function */
274 II_GVAR, /* Global variable */
275 II_SVAR, /* Static variable */
276 II_PSYM, /* Function argument */
277 II_SOU, /* Struct or union */
278 II_TYPE /* Type (typedef) */
281 typedef struct iidesc {
285 char *ii_owner; /* File that defined this node */
288 /* Function arguments (if any) */
291 int ii_vargs; /* Function uses varargs */
294 #define IIDESC_F_USED 0x1 /* Write this iidesc out */
297 * labelent_t nodes identify labels and corresponding type ranges associated
298 * with them. The label in a given labelent_t is associated with types with
301 typedef struct labelent {
307 * The tdata_t (Type DATA) structure contains or references all type data for
308 * a given file or, during merging, several files.
310 typedef struct tdata {
311 int td_curemark; /* Equality mark (see merge.c) */
312 int td_curvgen; /* Visitation generation (see traverse.c) */
313 int td_nextid; /* The ID for the next tdesc_t created */
314 hash_t *td_iihash; /* The iidesc_t nodes for this file */
316 hash_t *td_layouthash; /* The tdesc nodes, hashed by structure */
317 hash_t *td_idhash; /* The tdesc nodes, hashed by type id */
318 list_t *td_fwdlist; /* All forward declaration tdesc nodes */
320 char *td_parlabel; /* Top label uniq'd against in parent */
321 char *td_parname; /* Basename of parent */
322 list_t *td_labels; /* Labels and their type ranges */
324 pthread_mutex_t td_mergelock;
330 * By design, the iidesc hash is heterogeneous. The CTF emitter, on the
331 * other hand, needs to be able to access the elements of the list by type,
332 * and in a specific sorted order. An iiburst holds these elements in that
333 * order. (A burster is a machine that separates carbon-copy forms)
335 typedef struct iiburst {
338 iidesc_t **iib_funcs;
342 iidesc_t **iib_objts;
348 struct tdtrav_data *iib_tdtd; /* tdtrav_data_t */
351 typedef struct ctf_buf ctf_buf_t;
353 typedef struct symit_data symit_data_t;
356 void cvt_fixstabs(tdata_t *);
357 void cvt_fixups(tdata_t *, size_t);
360 caddr_t ctf_gen(iiburst_t *, size_t *, int);
361 tdata_t *ctf_load(char *, caddr_t, size_t, symit_data_t *, char *);
364 iidesc_t *iidesc_new(char *);
365 int iidesc_hash(int, void *);
366 void iter_iidescs_by_name(tdata_t *, const char *,
367 int (*)(void *, void *), void *);
368 iidesc_t *iidesc_dup(iidesc_t *);
369 iidesc_t *iidesc_dup_rename(iidesc_t *, char const *, char const *);
370 void iidesc_add(hash_t *, iidesc_t *);
371 void iidesc_free(void *, void *);
372 int iidesc_count_type(void *, void *);
373 void iidesc_stats(hash_t *);
374 int iidesc_dump(iidesc_t *);
377 typedef enum source_types {
384 source_types_t built_source_types(Elf *, const char *);
385 int count_files(char **, int);
386 int read_ctf(char **, int, char *, int (*)(tdata_t *, char *, void *),
388 int read_ctf_save_cb(tdata_t *, char *, void *);
389 symit_data_t *symit_new(Elf *, const char *);
390 void symit_reset(symit_data_t *);
391 char *symit_curfile(symit_data_t *);
392 GElf_Sym *symit_next(symit_data_t *, int);
393 char *symit_name(symit_data_t *);
394 void symit_free(symit_data_t *);
397 void merge_into_master(tdata_t *, tdata_t *, tdata_t *, int);
400 #define CTF_FUZZY_MATCH 0x1 /* match local symbols to global CTF */
401 #define CTF_USE_DYNSYM 0x2 /* use .dynsym not .symtab */
402 #define CTF_COMPRESS 0x4 /* compress CTF output */
403 #define CTF_KEEP_STABS 0x8 /* keep .stabs sections */
404 #define CTF_SWAP_BYTES 0x10 /* target byte order is different from host */
406 void write_ctf(tdata_t *, const char *, const char *, int);
409 void parse_init(tdata_t *);
410 void parse_finish(tdata_t *);
411 int parse_stab(stab_t *, char *, iidesc_t **);
412 tdesc_t *lookup(int);
413 tdesc_t *lookupname(const char *);
414 void check_hash(void);
415 void resolve_typed_bitfields(void);
418 int stabs_read(tdata_t *, Elf *, char *);
421 int dw_read(tdata_t *, Elf *, char *);
422 const char *dw_tag2str(uint_t);
425 tdata_t *tdata_new(void);
426 void tdata_free(tdata_t *);
427 void tdata_build_hashes(tdata_t *td);
428 const char *tdesc_name(tdesc_t *);
429 int tdesc_idhash(int, void *);
430 int tdesc_idcmp(void *, void *);
431 int tdesc_namehash(int, void *);
432 int tdesc_namecmp(void *, void *);
433 int tdesc_layouthash(int, void *);
434 int tdesc_layoutcmp(void *, void *);
435 void tdesc_free(tdesc_t *);
436 void tdata_label_add(tdata_t *, const char *, int);
437 labelent_t *tdata_label_top(tdata_t *);
438 int tdata_label_find(tdata_t *, char *);
439 void tdata_label_free(tdata_t *);
440 void tdata_merge(tdata_t *, tdata_t *);
441 void tdata_label_newmax(tdata_t *, int);
444 int streq(const char *, const char *);
445 int findelfsecidx(Elf *, const char *, const char *);
446 size_t elf_ptrsz(Elf *);
447 char *mktmpname(const char *, const char *);
448 void terminate(const char *, ...) __NORETURN;
449 void aborterr(const char *, ...) __NORETURN;
450 void set_terminate_cleanup(void (*)(void));
451 void elfterminate(const char *, const char *, ...);
452 void warning(const char *, ...);
453 void vadebug(int, const char *, va_list);
454 void debug(int, const char *, ...);
457 void watch_dump(int);
458 void watch_set(void *, int);
464 #endif /* _CTFTOOLS_H */