xref: /titanic_51/usr/src/cmd/sgs/libld/common/_libld.h (revision 76b27f93c5149222cfc6babb8a5b4f1a06a4ead5)
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 /*
23  *	Copyright (c) 1988 AT&T
24  *	  All Rights Reserved
25  *
26  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
27  * Use is subject to license terms.
28  */
29 
30 /*
31  * Local include file for ld library.
32  */
33 
34 #ifndef	_LIBLD_DOT_H
35 #define	_LIBLD_DOT_H
36 
37 #pragma ident	"%Z%%M%	%I%	%E% SMI"
38 
39 #include <libld.h>
40 #include <_libelf.h>
41 #include <debug.h>
42 #include <conv.h>
43 #include <msg.h>
44 
45 #ifdef	__cplusplus
46 extern "C" {
47 #endif
48 
49 /*
50  * Types of segment index.
51  */
52 typedef enum {
53 	LD_PHDR,	LD_INTERP,	LD_SUNWCAP,	LD_TEXT,
54 	LD_DATA,	LD_BSS,
55 #if	defined(__x86) && defined(_ELF64)
56 	LD_LRODATA,	LD_LDATA,
57 #endif
58 	LD_DYN,		LD_DTRACE,	 LD_SUNWBSS,	LD_TLS,
59 #if	defined(__x86) && defined(_ELF64)
60 	LD_UNWIND,
61 #endif
62 	LD_NOTE,	LD_EXTRA,
63 	LD_NUM
64 } Segment_ndx;
65 
66 /*
67  * Types of bss sections
68  */
69 typedef enum {
70 	MAKE_BSS,
71 	MAKE_LBSS,
72 	MAKE_TLS
73 } Bss_Type;
74 
75 /*
76  * Structure to manage the update of weak symbols from their associated alias.
77  */
78 typedef	struct wk_desc {
79 	Sym		*wk_symtab;	/* the .symtab entry */
80 	Sym		*wk_dynsym;	/* the .dynsym entry */
81 	Sym_desc	*wk_weak;	/* the original weak symbol */
82 	Sym_desc	*wk_alias;	/* the real symbol */
83 } Wk_desc;
84 
85 /*
86  * Structure to manage the support library interfaces.
87  */
88 typedef struct func_list {
89 	const char	*fl_obj;	/* name of support object */
90 					/*	function is from */
91 	void		(*fl_fptr)();	/* function pointer */
92 	uint_t		fl_version;	/* ld_version() level */
93 } Func_list;
94 
95 typedef	struct support_list {
96 	const char	*sup_name;	/* ld_support function name */
97 	List		sup_funcs;	/* list of support functions */
98 } Support_list;
99 
100 /*
101  * Structure to manage a sorted output relocation list.
102  *
103  *	rl_key1		->	pointer to needed ndx
104  *	rl_key2		->	pointer to symbol relocation is against
105  *	rl_key3		->	virtual offset of relocation
106  */
107 typedef struct reloc_list {
108 	Sym_desc	*rl_key2;
109 	Xword		rl_key3;
110 	Rel_desc	*rl_rsp;
111 	Half		rl_key1;
112 } Reloc_list;
113 
114 
115 typedef struct sym_s_list {
116 	Word		sl_hval;
117 	Sym_desc *	sl_sdp;
118 } Sym_s_list;
119 
120 /*
121  * ld heap management structure
122  */
123 typedef struct _ld_heap Ld_heap;
124 struct _ld_heap {
125 	Ld_heap		*lh_next;
126 	void		*lh_free;
127 	void		*lh_end;
128 };
129 
130 #define	HEAPBLOCK	0x68000		/* default allocation block size */
131 #define	HEAPALIGN	0x8		/* heap blocks alignment requirement */
132 
133 /*
134  * Dynamic per-symbol filtee string table descriptor.  This associates filtee
135  * strings that will be created in the .dynstr, with .dynamic entries.
136  */
137 typedef struct {
138 	char		*dft_str;	/* dynstr string */
139 	Word		dft_flag;	/* auxiliary/filtee type */
140 	Half		dft_ndx;	/* eventual ndx into .dynamic */
141 } Dfltr_desc;
142 
143 /*
144  * Per-symbol filtee descriptor.  This associates symbol definitions with
145  * their filtees.
146  */
147 typedef struct {
148 	Sym_desc	*sft_sdp;	/* symbol descriptor */
149 	Aliste		sft_off;	/* offset into dtstr descriptor */
150 } Sfltr_desc;
151 
152 /*
153  * Define Alist initialization sizes.
154  */
155 #define	AL_CNT_DFLTR	4		/* ofl_dtsfltrs initial alist count */
156 #define	AL_CNT_GROUP	20		/* ifl_groups initial alist count */
157 #define	AL_CNT_SFLTR	20		/* ofl_symfltrs initial alist count */
158 #define	AL_CNT_OSDESC	40		/* sg_osdescs initial alist count */
159 #define	AL_CNT_SECORDER	40		/* sg_secorder initial alist count */
160 
161 /*
162  * Return codes for {tls|got}_fixups() routines
163  */
164 typedef enum {
165 	FIX_ERROR,	/* fatal error - time to punt */
166 	FIX_DONE,	/* relocation done - no further processing required */
167 	FIX_RELOC	/* do_reloc() relocation processing required */
168 } Fixupret;
169 
170 #ifndef	FILENAME_MAX
171 #define	FILENAME_MAX	BUFSIZ		/* maximum length of a path name */
172 #endif
173 
174 /*
175  * We pad the end of the .dynstr section with a block of DYNSTR_EXTRA_PAD
176  * bytes, and we insert DYNAMIC_EXTRA_ELTS unused items into the
177  * .dynamic section (with value DT_NULL). This provides the resources needed
178  * to add and/or alter string items in the .dynamic section, such as runpath.
179  */
180 #define	DYNSTR_EXTRA_PAD	512
181 #define	DYNAMIC_EXTRA_ELTS	10
182 
183 /*
184  * Relocation buckets are sized based on the number of input relocations and
185  * the following constants.
186  */
187 #define	REL_HAIDESCNO	1000		/* high water mark active buckets */
188 #define	REL_LAIDESCNO	50		/* low water mark active buckets */
189 #define	REL_HOIDESCNO	500		/* high water mark output buckets */
190 #define	REL_LOIDESCNO	10		/* low water mark output buckets */
191 
192 extern char		*Plibpath;
193 extern char		*Llibdir;
194 extern char		*Ulibdir;
195 extern Ld_heap		*ld_heap;
196 extern List		lib_support;
197 extern int		demangle_flag;
198 extern const Msg	reject[];
199 extern int		Verbose;
200 extern const int	ldynsym_symtype[STT_NUM];
201 extern const int	dynsymsort_symtype[STT_NUM];
202 
203 /*
204  * Given a symbol of a type that is allowed within a .SUNW_dynsymsort or
205  * .SUNW_dyntlssort section, examine the symbol attributes to determine
206  * if this particular symbol should be included or not.
207  *
208  * entry:
209  *	The symbol must have an allowed type: Either a type verified by
210  *	dynsymsort_symtype[] or STT_TLS.
211  *
212  *	_sdp - Pointer to symbol descriptor
213  *	_sym - Pointer to symbol referenced by _sdp.
214  *
215  *	_sym is derivable from _sdp: _sdp->sd_sym
216  *	However, most callers assign it to a local variable for efficiency,
217  *	and this macro allows such a variable to be used within. If you
218  *	don't have such a variable, supply _sdp->sd_sym.
219  *
220  * The tests used require some explanation:
221  *
222  *	(_sdp->sd_flags & FLG_SY_DYNSORT)
223  *		Some special symbols are kept even if they don't meet the
224  *		usual requirements. These symbols have the FLG_SY_DYNSORT
225  *		bit set. If this bit isn't set then we look at the other
226  *		attributes.
227  *
228  *	((_sdp->sd_ref != REF_DYN_NEED) || (_sdp->sd_flags & FLG_SY_MVTOCOMM))
229  *		We do not want to include symbols that are not defined within
230  *		the object we are creating. REF_DYN_NEED corresponds to those
231  *		UNDEF items. However, if the symbol is the target of a copy
232  *		relocation, then it effectively becomes defined within the
233  *		object after all. FLG_SY_MVTOCOMM indicates a copy relocation,
234  *		and prevents us from culling those exceptions.
235  *
236  *	(_sym->st_size != 0)
237  *		Symbols with 0 length are labels injected by the compilers
238  *		or the linker for purposes of code generation, and do
239  *		not directly correspond to actual code. In fact, most of the
240  *		symbols we mark with FLG_SY_DYNSORT need that flag set because
241  *		they have size 0. This size test filters out the others.
242  *
243  *	!(_sdp->sd_flags & FLG_SY_NODYNSORT)
244  *		Some symbols are not kept, even though they do meet the usual
245  *		requirements. These symbols have FLG_SY_NODYNSORT set.
246  *		For example, if there are weak and non-weak versions of a given
247  *		symbol, we only want to keep one of them. So, we set
248  *		FLG_SY_NODYNSORT on the one we don't want.
249  */
250 #define	DYNSORT_TEST_ATTR(_sdp, _sym) \
251 	((_sdp->sd_flags & FLG_SY_DYNSORT) || \
252 	(((_sdp->sd_ref != REF_DYN_NEED) || \
253 		(_sdp->sd_flags & FLG_SY_MVTOCOMM)) && \
254 	(_sym->st_size != 0) && \
255 	!(_sdp->sd_flags & FLG_SY_NODYNSORT)))
256 
257 /*
258  * We use output section descriptor counters to add up the number of
259  * symbol indexes to put in the .SUNW_dynsort and .SUNW_dyntlssort sections.
260  * Non-TLS symbols are counted by ofl->ofl_dynsymsortcnt, while TLS symbols are
261  * counted by ofl->ofl_dyntlssortcnt. This computation is done inline in
262  * several places. The DYNSORT_COUNT macro allows us to generate this from
263  * a single description.
264  *
265  * entry:
266  *	_sdp, _sym - As per DYNSORT_TEST_ATTR
267  *	_type - Type of symbol (STT_*)
268  *	_inc_or_dec_op - Either ++, or --. This specifies the operation
269  *		to be applied to the counter, and determines whether we
270  *		are adding, or removing, a symbol from .SUNW_dynsymsort.
271  *
272  * Note that _type is derivable from _sym: ELF_ST_TYPE(_sdp->sd_sym->st_info).
273  * Most callers already have it in a variable, so this allows us to use that
274  * variable. If you don't have such a variable, use ELF_ST_TYPE() as shown.
275  */
276 #define	DYNSORT_COUNT(_sdp, _sym, _type, _inc_or_dec_op) \
277 { \
278 	Word *_cnt_var; \
279 	\
280 	if (dynsymsort_symtype[_type]) {	/* Non-TLS counter */ \
281 		_cnt_var = &ofl->ofl_dynsymsortcnt; \
282 	} else if ((_type) == STT_TLS) {	/* TLS counter */ \
283 		_cnt_var = &ofl->ofl_dyntlssortcnt; \
284 	} else {				/* Don't count this symbol */ \
285 		_cnt_var = NULL; \
286 	} \
287 	if ((_cnt_var != NULL) && DYNSORT_TEST_ATTR(_sdp, _sym)) \
288 		(*_cnt_var)_inc_or_dec_op;	/* Increment/Decrement */ \
289 }
290 
291 
292 /*
293  * For backward compatibility provide a /dev/zero file descriptor.
294  */
295 extern int		dz_fd;
296 
297 /*
298  * Local functions.
299  */
300 extern char		*add_string(char *, char *);
301 extern const char	*demangle(const char *);
302 
303 extern void		lds_atexit(Ofl_desc *, int);
304 
305 extern void		libld_free(void *);
306 extern void		*libld_malloc(size_t);
307 extern void		*libld_realloc(void *, size_t);
308 
309 extern Listnode		*list_appendc(List *, const void *);
310 extern Listnode		*list_insertc(List *, const void *, Listnode *);
311 extern Listnode		*list_prependc(List *, const void *);
312 extern Listnode		*list_where(List *, Word num);
313 
314 extern Sdf_desc		*sdf_add(const char *, List *);
315 extern Sdf_desc		*sdf_find(const char *, List *);
316 
317 #if	defined(_ELF64)
318 
319 #define	ld_add_actrel		ld64_add_actrel
320 #define	ld_add_libdir		ld64_add_libdir
321 #define	ld_add_outrel		ld64_add_outrel
322 #define	ld_adj_movereloc	ld64_adj_movereloc
323 #define	ld_am_I_partial		ld64_am_I_partial
324 #define	ld_ar_member		ld64_ar_member
325 #define	ld_ar_setup		ld64_ar_setup
326 #if	defined(__sparc)
327 #define	ld_allocate_got		ld64_allocate_got
328 #endif
329 #define	ld_assign_got		ld64_assign_got
330 #define	ld_assign_got_ndx	ld64_assign_got_ndx
331 #define	ld_assign_got_TLS	ld64_assign_got_TLS
332 #define	ld_assign_plt_ndx	ld64_assign_plt_ndx
333 #define	ld_byteswap_Xword	ld64_byteswap_Xword
334 #define	ld_calc_got_offset	ld64_calc_got_offset
335 #define	ld_calc_plt_addr	ld64_calc_plt_addr
336 #define	ld_disp_errmsg		ld64_disp_errmsg
337 #define	ld_do_activerelocs	ld64_do_activerelocs
338 #define	ld_ent_check		ld64_ent_check
339 #define	ld_exit			ld64_exit
340 #define	ld_fillin_gotplt	ld64_fillin_gotplt
341 #define	ld_find_gotndx		ld64_find_gotndx
342 #define	ld_find_library		ld64_find_library
343 #define	ld_finish_libs		ld64_finish_libs
344 #define	ld_get_group		ld64_get_group
345 #define	ld_lib_setup		ld64_lib_setup
346 #define	ld_init			ld64_init
347 #define	ld_init_rel		ld64_init_rel
348 #define	ld_is_regsym		ld64_is_regsym
349 #define	ld_lcm			ld64_lcm
350 #define	ld_mach_update_odynamic	ld64_mach_update_odynamic
351 #define	ld_mach_eflags		ld64_mach_eflags
352 #define	ld_mach_make_dynamic	ld64_mach_make_dynamic
353 #define	ld_mach_sym_typecheck	ld64_mach_sym_typecheck
354 #define	ld_make_bss		ld64_make_bss
355 #define	ld_make_data		ld64_make_data
356 #define	ld_make_got		ld64_make_got
357 #define	ld_make_sunwbss		ld64_make_sunwbss
358 #define	ld_make_sunwdata	ld64_make_sunwdata
359 #define	ld_make_sunwmove	ld64_make_sunmove
360 #define	ld_make_text		ld64_make_text
361 #define	ld_map_out		ld64_map_out
362 #define	ld_map_parse		ld64_map_parse
363 #define	ld_open_outfile		ld64_open_outfile
364 #define	ld_perform_outreloc	ld64_perform_outreloc
365 #define	ld_place_section	ld64_place_section
366 #define	ld_process_archive	ld64_process_archive
367 #define	ld_process_files	ld64_process_files
368 #define	ld_process_flags	ld64_process_flags
369 #define	ld_process_ifl		ld64_process_ifl
370 #define	ld_process_ordered	ld64_process_ordered
371 #define	ld_process_sym_reloc	ld64_process_sym_reloc
372 #define	ld_reloc_local		ld64_reloc_local
373 #define	ld_reloc_GOT_relative	ld64_reloc_GOT_relative
374 #define	ld_reloc_GOTOP		ld64_reloc_GOTOP
375 #define	ld_reloc_plt		ld64_reloc_plt
376 #define	ld_reloc_register	ld64_reloc_register
377 #define	ld_reloc_remain_entry	ld64_reloc_remain_entry
378 #define	ld_reloc_TLS		ld64_reloc_TLS
379 #define	ld_reg_check		ld64_reg_check
380 #define	ld_reg_enter		ld64_reg_enter
381 #define	ld_reg_find		ld64_reg_find
382 #define	ld_sec_validate		ld64_sec_validate
383 #define	ld_sort_ordered		ld64_sort_ordered
384 #define	ld_sort_seg_list	ld64_sort_seg_list
385 #define	ld_sunwmove_preprocess	ld64_sunwmove_preprocess
386 #define	ld_sup_atexit		ld64_sup_atexit
387 #define	ld_sup_open		ld64_sup_open
388 #define	ld_sup_file		ld64_sup_file
389 #define	ld_sup_loadso		ld64_sup_loadso
390 #define	ld_sup_input_done	ld64_sup_input_done
391 #define	ld_sup_input_section	ld64_sup_input_section
392 #define	ld_sup_section		ld64_sup_section
393 #define	ld_sup_start		ld64_sup_start
394 #define	ld_sym_add_u		ld64_sym_add_u
395 #define	ld_sym_adjust_vis	ld64_sym_adjust_vis
396 #define	ld_sym_avl_comp		ld64_sym_avl_comp
397 #define	ld_sym_copy		ld64_sym_copy
398 #define	ld_sym_enter		ld64_sym_enter
399 #define	ld_sym_find		ld64_sym_find
400 #define	ld_sym_nodirect		ld64_sym_nodirect
401 #define	ld_sym_process		ld64_sym_process
402 #define	ld_sym_resolve		ld64_sym_resolve
403 #define	ld_sym_spec		ld64_sym_spec
404 #define	ld_vers_base		ld64_vers_base
405 #define	ld_vers_check_defs	ld64_vers_check_defs
406 #define	ld_vers_check_need	ld64_vers_check_need
407 #define	ld_vers_def_process	ld64_vers_def_process
408 #define	ld_vers_desc		ld64_vers_desc
409 #define	ld_vers_find		ld64_vers_find
410 #define	ld_vers_need_process	ld64_vers_need_process
411 #define	ld_vers_promote		ld64_vers_promote
412 #define	ld_vers_sym_process	ld64_vers_sym_process
413 #define	ld_vers_verify		ld64_vers_verify
414 
415 #else
416 
417 #define	ld_add_actrel		ld32_add_actrel
418 #define	ld_add_libdir		ld32_add_libdir
419 #define	ld_add_outrel		ld32_add_outrel
420 #define	ld_adj_movereloc	ld32_adj_movereloc
421 #define	ld_am_I_partial		ld32_am_I_partial
422 #define	ld_ar_member		ld32_ar_member
423 #define	ld_ar_setup		ld32_ar_setup
424 #if	defined(__sparc)
425 #define	ld_allocate_got		ld32_allocate_got
426 #endif
427 #define	ld_assign_got		ld32_assign_got
428 #define	ld_assign_got_ndx	ld32_assign_got_ndx
429 #define	ld_assign_got_TLS	ld32_assign_got_TLS
430 #define	ld_assign_plt_ndx	ld32_assign_plt_ndx
431 #define	ld_byteswap_Xword	ld32_byteswap_Xword
432 #define	ld_calc_got_offset	ld32_calc_got_offset
433 #define	ld_calc_plt_addr	ld32_calc_plt_addr
434 #define	ld_disp_errmsg		ld32_disp_errmsg
435 #define	ld_do_activerelocs	ld32_do_activerelocs
436 #define	ld_ent_check		ld32_ent_check
437 #define	ld_exit			ld32_exit
438 #define	ld_fillin_gotplt	ld32_fillin_gotplt
439 #define	ld_find_gotndx		ld32_find_gotndx
440 #define	ld_find_library		ld32_find_library
441 #define	ld_finish_libs		ld32_finish_libs
442 #define	ld_get_group		ld32_get_group
443 #define	ld_lib_setup		ld32_lib_setup
444 #define	ld_init			ld32_init
445 #define	ld_init_rel		ld32_init_rel
446 #define	ld_is_regsym		ld32_is_regsym
447 #define	ld_lcm			ld32_lcm
448 #define	ld_mach_update_odynamic	ld32_mach_update_odynamic
449 #define	ld_mach_eflags		ld32_mach_eflags
450 #define	ld_mach_make_dynamic	ld32_mach_make_dynamic
451 #define	ld_mach_sym_typecheck	ld32_mach_sym_typecheck
452 #define	ld_make_bss		ld32_make_bss
453 #define	ld_make_data		ld32_make_data
454 #define	ld_make_got		ld32_make_got
455 #define	ld_make_sunwbss		ld32_make_sunwbss
456 #define	ld_make_sunwdata	ld32_make_sunwdata
457 #define	ld_make_sunwmove	ld32_make_sunmove
458 #define	ld_make_text		ld32_make_text
459 #define	ld_map_out		ld32_map_out
460 #define	ld_map_parse		ld32_map_parse
461 #define	ld_open_outfile		ld32_open_outfile
462 #define	ld_perform_outreloc	ld32_perform_outreloc
463 #define	ld_place_section	ld32_place_section
464 #define	ld_process_archive	ld32_process_archive
465 #define	ld_process_files	ld32_process_files
466 #define	ld_process_flags	ld32_process_flags
467 #define	ld_process_ifl		ld32_process_ifl
468 #define	ld_process_ordered	ld32_process_ordered
469 #define	ld_process_sym_reloc	ld32_process_sym_reloc
470 #define	ld_reloc_local		ld32_reloc_local
471 #define	ld_reloc_GOT_relative	ld32_reloc_GOT_relative
472 #define	ld_reloc_GOTOP		ld32_reloc_GOTOP
473 #define	ld_reloc_plt		ld32_reloc_plt
474 #define	ld_reloc_register	ld32_reloc_register
475 #define	ld_reloc_remain_entry	ld32_reloc_remain_entry
476 #define	ld_reloc_TLS		ld32_reloc_TLS
477 #define	ld_reg_check		ld32_reg_check
478 #define	ld_reg_enter		ld32_reg_enter
479 #define	ld_reg_find		ld32_reg_find
480 #define	ld_sec_validate		ld32_sec_validate
481 #define	ld_sort_ordered		ld32_sort_ordered
482 #define	ld_sort_seg_list	ld32_sort_seg_list
483 #define	ld_sunwmove_preprocess	ld32_sunwmove_preprocess
484 #define	ld_sup_atexit		ld32_sup_atexit
485 #define	ld_sup_open		ld32_sup_open
486 #define	ld_sup_file		ld32_sup_file
487 #define	ld_sup_loadso		ld32_sup_loadso
488 #define	ld_sup_input_done	ld32_sup_input_done
489 #define	ld_sup_input_section	ld32_sup_input_section
490 #define	ld_sup_section		ld32_sup_section
491 #define	ld_sup_start		ld32_sup_start
492 #define	ld_sym_add_u		ld32_sym_add_u
493 #define	ld_sym_adjust_vis	ld32_sym_adjust_vis
494 #define	ld_sym_avl_comp		ld32_sym_avl_comp
495 #define	ld_sym_copy		ld32_sym_copy
496 #define	ld_sym_enter		ld32_sym_enter
497 #define	ld_sym_find		ld32_sym_find
498 #define	ld_sym_nodirect		ld32_sym_nodirect
499 #define	ld_sym_process		ld32_sym_process
500 #define	ld_sym_resolve		ld32_sym_resolve
501 #define	ld_sym_spec		ld32_sym_spec
502 #define	ld_vers_base		ld32_vers_base
503 #define	ld_vers_check_defs	ld32_vers_check_defs
504 #define	ld_vers_check_need	ld32_vers_check_need
505 #define	ld_vers_def_process	ld32_vers_def_process
506 #define	ld_vers_desc		ld32_vers_desc
507 #define	ld_vers_find		ld32_vers_find
508 #define	ld_vers_need_process	ld32_vers_need_process
509 #define	ld_vers_promote		ld32_vers_promote
510 #define	ld_vers_sym_process	ld32_vers_sym_process
511 #define	ld_vers_verify		ld32_vers_verify
512 
513 #endif
514 
515 extern uintptr_t	dbg_setup(const char *, Dbg_desc *, const char **, int);
516 
517 extern uintptr_t	ld_add_actrel(Word, Rel_desc *, Ofl_desc *);
518 extern uintptr_t	ld_add_libdir(Ofl_desc *, const char *);
519 extern uintptr_t	ld_add_outrel(Word, Rel_desc *, Ofl_desc *);
520 extern void 		ld_adj_movereloc(Ofl_desc *, Rel_desc *);
521 extern Sym_desc * 	ld_am_I_partial(Rel_desc *, Xword);
522 extern void		ld_ar_member(Ar_desc *, Elf_Arsym *, Ar_aux *,
523 			    Ar_mem *);
524 extern Ar_desc		*ld_ar_setup(const char *, Elf *, Ofl_desc *);
525 #if	defined(__sparc)
526 extern uintptr_t	ld_allocate_got(Ofl_desc *);
527 #endif
528 extern uintptr_t	ld_assign_got(Ofl_desc *, Sym_desc *);
529 extern uintptr_t	ld_assign_got_ndx(List *, Gotndx *, Gotref, Ofl_desc *,
530 			    Rel_desc *, Sym_desc *);
531 extern uintptr_t	ld_assign_got_TLS(Boolean, Rel_desc *, Ofl_desc *,
532 			    Sym_desc *, Gotndx *, Gotref, Word, Word,
533 			    Word, Word);
534 extern void		ld_assign_plt_ndx(Sym_desc *, Ofl_desc *);
535 
536 extern Xword		ld_byteswap_Xword(Xword);
537 extern Xword		ld_calc_got_offset(Rel_desc *, Ofl_desc *);
538 extern Xword		ld_calc_plt_addr(Sym_desc *, Ofl_desc *);
539 
540 extern void		ld_disp_errmsg(const char *, Rel_desc *, Ofl_desc *);
541 extern uintptr_t	ld_do_activerelocs(Ofl_desc *);
542 
543 extern void		ld_ent_check(Ofl_desc *);
544 extern int		ld_exit(Ofl_desc *);
545 
546 extern uintptr_t	ld_fillin_gotplt(Ofl_desc *);
547 extern Gotndx *		ld_find_gotndx(List *, Gotref, Ofl_desc *, Rel_desc *);
548 extern uintptr_t	ld_find_library(const char *, Ofl_desc *);
549 extern uintptr_t	ld_finish_libs(Ofl_desc *);
550 
551 extern Group_desc *	ld_get_group(Ofl_desc *, Is_desc *);
552 
553 extern uintptr_t	ld_lib_setup(Ofl_desc *);
554 
555 extern void		ld_init(Ofl_desc *);
556 extern Word		ld_init_rel(Rel_desc *, void *);
557 extern const char	*ld_is_regsym(Ofl_desc *, Ifl_desc *, Sym *,
558 			    const char *, int, Word, const char *, Word *);
559 
560 extern Xword		ld_lcm(Xword, Xword);
561 
562 extern void		ld_mach_update_odynamic(Ofl_desc *, Dyn **);
563 extern void		ld_mach_eflags(Ehdr *, Ofl_desc *);
564 extern void		ld_mach_make_dynamic(Ofl_desc *, size_t *);
565 extern int		ld_mach_sym_typecheck(Sym_desc *, Sym *, Ifl_desc *,
566 			    Ofl_desc *);
567 extern uintptr_t	ld_make_bss(Ofl_desc *, Xword, Xword, Bss_Type);
568 extern Is_desc		*ld_make_data(Ofl_desc *, size_t);
569 extern uintptr_t	ld_make_got(Ofl_desc *);
570 extern uintptr_t	ld_make_sunwbss(Ofl_desc *, size_t, Xword);
571 extern uintptr_t	ld_make_sunwdata(Ofl_desc *, size_t, Xword);
572 extern uintptr_t	ld_make_sunwmove(Ofl_desc *, int);
573 extern Is_desc		*ld_make_text(Ofl_desc *, size_t);
574 extern void		ld_map_out(Ofl_desc *);
575 extern uintptr_t	ld_map_parse(const char *, Ofl_desc *);
576 
577 extern uintptr_t	ld_open_outfile(Ofl_desc *);
578 
579 extern uintptr_t	ld_perform_outreloc(Rel_desc *, Ofl_desc *);
580 extern Os_desc *	ld_place_section(Ofl_desc *, Is_desc *, int, Word);
581 extern uintptr_t	ld_process_archive(const char *, int, Ar_desc *,
582 			    Ofl_desc *);
583 extern uintptr_t	ld_process_files(Ofl_desc *, int, char **);
584 extern uintptr_t	ld_process_flags(Ofl_desc *, int, char **);
585 extern Ifl_desc		*ld_process_ifl(const char *, const char *, int, Elf *,
586 			    Word, Ofl_desc *, Rej_desc *);
587 extern uintptr_t	ld_process_ordered(Ifl_desc *, Ofl_desc *, Word, Word);
588 extern uintptr_t	ld_process_sym_reloc(Ofl_desc *, Rel_desc *, Rel *,
589 			    Is_desc *, const char *);
590 
591 extern uintptr_t	ld_reloc_local(Rel_desc *, Ofl_desc *);
592 extern uintptr_t	ld_reloc_GOT_relative(Boolean, Rel_desc *, Ofl_desc *);
593 extern uintptr_t	ld_reloc_GOTOP(Boolean, Rel_desc *, Ofl_desc *);
594 extern uintptr_t	ld_reloc_plt(Rel_desc *, Ofl_desc *);
595 extern uintptr_t	ld_reloc_register(Rel_desc *, Is_desc *, Ofl_desc *);
596 extern void		ld_reloc_remain_entry(Rel_desc *, Os_desc *,
597 			    Ofl_desc *);
598 extern uintptr_t	ld_reloc_TLS(Boolean, Rel_desc *, Ofl_desc *);
599 
600 extern int		ld_reg_check(Sym_desc *, Sym *, const char *,
601 			    Ifl_desc *, Ofl_desc *);
602 extern int		ld_reg_enter(Sym_desc *, Ofl_desc *);
603 extern Sym_desc *	ld_reg_find(Sym *, Ofl_desc *);
604 
605 extern void		ld_sec_validate(Ofl_desc *);
606 extern uintptr_t	ld_sort_ordered(Ofl_desc *);
607 extern uintptr_t	ld_sort_seg_list(Ofl_desc *);
608 extern uintptr_t	ld_sunwmove_preprocess(Ofl_desc *);
609 extern void		ld_sup_atexit(Ofl_desc *, int);
610 extern void		ld_sup_open(Ofl_desc *, const char **, const char **,
611 			    int *, int, Elf **, Elf *ref, size_t,
612 			    const Elf_Kind);
613 extern void		ld_sup_file(Ofl_desc *, const char *, const Elf_Kind,
614 			    int flags, Elf *);
615 extern uintptr_t	ld_sup_loadso(Ofl_desc *, const char *);
616 extern void		ld_sup_input_done(Ofl_desc *);
617 extern void		ld_sup_section(Ofl_desc *, const char *, Shdr *, Word,
618 			    Elf_Data *, Elf *);
619 extern uintptr_t	ld_sup_input_section(Ofl_desc*, Ifl_desc *,
620 			    const char *, Shdr **, Word, Elf_Scn *, Elf *);
621 extern void		ld_sup_start(Ofl_desc *, const Half, const char *);
622 extern Sym_desc		*ld_sym_add_u(const char *, Ofl_desc *, Msg);
623 extern void		ld_sym_adjust_vis(Sym_desc *, Ofl_desc *);
624 extern int		ld_sym_avl_comp(const void *, const void *);
625 extern uintptr_t	ld_sym_copy(Sym_desc *);
626 extern Sym_desc		*ld_sym_enter(const char *, Sym *, Word, Ifl_desc *,
627 			    Ofl_desc *, Word, Word, Word, Half, avl_index_t *);
628 extern Sym_desc		*ld_sym_find(const char *, Word, avl_index_t *,
629 			    Ofl_desc *);
630 extern uintptr_t	ld_sym_nodirect(Is_desc *, Ifl_desc *, Ofl_desc *);
631 extern uintptr_t	ld_sym_process(Is_desc *, Ifl_desc *, Ofl_desc *);
632 extern uintptr_t	ld_sym_resolve(Sym_desc *, Sym *, Ifl_desc *,
633 			    Ofl_desc *, int, Word, Word);
634 extern uintptr_t	ld_sym_spec(Ofl_desc *);
635 
636 extern Ver_desc		*ld_vers_base(Ofl_desc *);
637 extern uintptr_t	ld_vers_check_defs(Ofl_desc *);
638 extern uintptr_t	ld_vers_check_need(Ofl_desc *);
639 extern uintptr_t	ld_vers_def_process(Is_desc *, Ifl_desc *, Ofl_desc *);
640 extern Ver_desc		*ld_vers_desc(const char *, Word, List *);
641 extern Ver_desc		*ld_vers_find(const char *, Word, List *);
642 extern uintptr_t	ld_vers_need_process(Is_desc *, Ifl_desc *, Ofl_desc *);
643 extern void		ld_vers_promote(Sym_desc *, Word, Ifl_desc *,
644 			    Ofl_desc *);
645 extern int		ld_vers_sym_process(Lm_list *, Is_desc *, Ifl_desc *);
646 extern int		ld_vers_verify(Ofl_desc *);
647 
648 extern uintptr_t	add_regsym(Sym_desc *, Ofl_desc *);
649 extern void		*alist_append(Alist **, const void *, size_t, int);
650 extern Word		hashbkts(Word);
651 extern Xword		lcm(Xword, Xword);
652 extern Listnode *	list_where(List *, Word);
653 
654 #if	defined(__x86) && defined(_ELF64)
655 extern uintptr_t	append_amd64_unwind(Os_desc *, Ofl_desc *);
656 extern uintptr_t	make_amd64_unwindhdr(Ofl_desc *);
657 extern uintptr_t	populate_amd64_unwindhdr(Ofl_desc *);
658 #endif
659 
660 #ifdef	__cplusplus
661 }
662 #endif
663 
664 #endif /* _LIBLD_DOT_H */
665