xref: /illumos-gate/usr/src/cmd/sgs/libld/common/update.c (revision 94c044f4)
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 (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
27  */
28 
29 /*
30  * Update the new output file image, perform virtual address, offset and
31  * displacement calculations on the program headers and sections headers,
32  * and generate any new output section information.
33  */
34 
35 #define	ELF_TARGET_AMD64
36 
37 #include	<stdio.h>
38 #include	<string.h>
39 #include	<unistd.h>
40 #include	<debug.h>
41 #include	"msg.h"
42 #include	"_libld.h"
43 
44 /*
45  * Comparison routine used by qsort() for sorting of the global symbol list
46  * based off of the hashbuckets the symbol will eventually be deposited in.
47  */
48 static int
49 sym_hash_compare(Sym_s_list * s1, Sym_s_list * s2)
50 {
51 	return (s1->sl_hval - s2->sl_hval);
52 }
53 
54 /*
55  * Comparison routine used by qsort() for sorting of dyn[sym|tls]sort section
56  * indices based on the address of the symbols they reference. The
57  * use of the global dynsort_compare_syms variable is needed because
58  * we need to examine the symbols the indices reference. It is safe, because
59  * the linker is single threaded.
60  */
61 Sym *dynsort_compare_syms;
62 
63 static int
64 dynsort_compare(const void *idx1, const void *idx2)
65 {
66 	Sym *s1 = dynsort_compare_syms + *((const Word *) idx1);
67 	Sym *s2 = dynsort_compare_syms + *((const Word *) idx2);
68 
69 	/*
70 	 * Note: the logical computation for this is
71 	 *	(st_value1 - st_value2)
72 	 * However, that is only correct if the address type is smaller
73 	 * than a pointer. Writing it this way makes it immune to the
74 	 * class (32 or 64-bit) of the linker.
75 	 */
76 	return ((s1->st_value < s2->st_value) ? -1 :
77 	    (s1->st_value > s2->st_value));
78 }
79 
80 /*
81  * Scan the sorted symbols, and issue warnings if there are any duplicate
82  * values in the list. We only do this if -zverbose is set, or we are
83  * running with LD_DEBUG defined
84  *
85  * entry:
86  *	ofl - Output file descriptor
87  *	ldynsym - Pointer to start of .SUNW_ldynsym section that the
88  *		sort section indexes reference.
89  *	symsort - Pointer to start of .SUNW_dynsymsort or .SUNW_dyntlssort
90  *		section.
91  *	n - # of indices in symsort array
92  *	secname - Name of the symsort section.
93  *
94  * exit:
95  *	If the symsort section contains indexes to more than one
96  *	symbol with the same address value, a warning is issued.
97  */
98 static void
99 dynsort_dupwarn(Ofl_desc *ofl, Sym *ldynsym, const char *str,
100     Word *symsort, Word n, const char *secname)
101 {
102 	int zverbose = (ofl->ofl_flags & FLG_OF_VERBOSE) != 0;
103 	Word ndx, cmp_ndx;
104 	Addr addr, cmp_addr;
105 
106 	/* Nothing to do if -zverbose or LD_DEBUG are not active */
107 	if (!(zverbose || DBG_ENABLED))
108 		return;
109 
110 	cmp_ndx = 0;
111 	cmp_addr = ldynsym[symsort[cmp_ndx]].st_value;
112 	for (ndx = 1; ndx < n; ndx++) {
113 		addr = ldynsym[symsort[ndx]].st_value;
114 		if (cmp_addr == addr) {
115 			if (zverbose)
116 				eprintf(ofl->ofl_lml, ERR_WARNING,
117 				    MSG_INTL(MSG_SYM_DUPSORTADDR), secname,
118 				    str + ldynsym[symsort[cmp_ndx]].st_name,
119 				    str + ldynsym[symsort[ndx]].st_name,
120 				    EC_ADDR(addr));
121 			DBG_CALL(Dbg_syms_dup_sort_addr(ofl->ofl_lml, secname,
122 			    str + ldynsym[symsort[cmp_ndx]].st_name,
123 			    str + ldynsym[symsort[ndx]].st_name,
124 			    EC_ADDR(addr)));
125 		} else {	/* Not a dup. Move reference up */
126 			cmp_ndx = ndx;
127 			cmp_addr = addr;
128 		}
129 	}
130 }
131 
132 /*
133  * Build and update any output symbol tables.  Here we work on all the symbol
134  * tables at once to reduce the duplication of symbol and string manipulation.
135  * Symbols and their associated strings are copied from the read-only input
136  * file images to the output image and their values and index's updated in the
137  * output image.
138  */
139 static Addr
140 update_osym(Ofl_desc *ofl)
141 {
142 	/*
143 	 * There are several places in this function where we wish
144 	 * to insert a symbol index to the combined .SUNW_ldynsym/.dynsym
145 	 * symbol table into one of the two sort sections (.SUNW_dynsymsort
146 	 * or .SUNW_dyntlssort), if that symbol has the right attributes.
147 	 * This macro is used to generate the necessary code from a single
148 	 * specification.
149 	 *
150 	 * entry:
151 	 *	_sdp, _sym, _type - As per DYNSORT_COUNT. See _libld.h
152 	 *	_sym_ndx - Index that _sym will have in the combined
153 	 *		.SUNW_ldynsym/.dynsym symbol table.
154 	 */
155 #define	ADD_TO_DYNSORT(_sdp, _sym, _type, _sym_ndx) \
156 	{ \
157 		Word *_dynsort_arr, *_dynsort_ndx; \
158 		\
159 		if (dynsymsort_symtype[_type]) { \
160 			_dynsort_arr = dynsymsort; \
161 			_dynsort_ndx = &dynsymsort_ndx; \
162 		} else if (_type == STT_TLS) { \
163 			_dynsort_arr = dyntlssort; \
164 			_dynsort_ndx = &dyntlssort_ndx; \
165 		} else { \
166 			_dynsort_arr = NULL; \
167 		} \
168 		if ((_dynsort_arr != NULL) && DYNSORT_TEST_ATTR(_sdp, _sym)) \
169 		    _dynsort_arr[(*_dynsort_ndx)++] = _sym_ndx; \
170 	}
171 
172 	Sym_desc	*sdp;
173 	Sym_avlnode	*sav;
174 	Sg_desc		*sgp, *tsgp = NULL, *dsgp = NULL, *esgp = NULL;
175 	Os_desc		*osp, *iosp = NULL, *fosp = NULL;
176 	Is_desc		*isc;
177 	Ifl_desc	*ifl;
178 	Word		bssndx, etext_ndx, edata_ndx = 0, end_ndx, start_ndx;
179 	Word		end_abs = 0, etext_abs = 0, edata_abs;
180 	Word		tlsbssndx = 0, parexpnndx;
181 #if	defined(_ELF64)
182 	Word		lbssndx = 0;
183 	Addr		lbssaddr = 0;
184 #endif
185 	Addr		bssaddr, etext = 0, edata = 0, end = 0, start = 0;
186 	Addr		tlsbssaddr = 0;
187 	Addr 		parexpnbase, parexpnaddr;
188 	int		start_set = 0;
189 	Sym		_sym = {0}, *sym, *symtab = NULL;
190 	Sym		*dynsym = NULL, *ldynsym = NULL;
191 	Word		symtab_ndx = 0;		/* index into .symtab */
192 	Word		symtab_gbl_bndx;	/* .symtab ndx 1st global */
193 	Word		ldynsym_ndx = 0;	/* index into .SUNW_ldynsym */
194 	Word		dynsym_ndx = 0;		/* index into .dynsym */
195 	Word		scopesym_ndx = 0;	/* index into scoped symbols */
196 	Word		scopesym_bndx = 0;	/* .symtab ndx 1st scoped sym */
197 	Word		ldynscopesym_ndx = 0;	/* index to ldynsym scoped */
198 						/*	symbols */
199 	Word		*dynsymsort = NULL;	/* SUNW_dynsymsort index */
200 						/*	vector */
201 	Word		*dyntlssort = NULL;	/* SUNW_dyntlssort index */
202 						/*	vector */
203 	Word		dynsymsort_ndx;		/* index dynsymsort array */
204 	Word		dyntlssort_ndx;		/* index dyntlssort array */
205 	Word		*symndx;		/* symbol index (for */
206 						/*	relocation use) */
207 	Word		*symshndx = NULL;	/* .symtab_shndx table */
208 	Word		*dynshndx = NULL;	/* .dynsym_shndx table */
209 	Word		*ldynshndx = NULL;	/* .SUNW_ldynsym_shndx table */
210 	Word		ldynsym_cnt = NULL;	/* number of items in */
211 						/*	.SUNW_ldynsym */
212 	Str_tbl		*shstrtab;
213 	Str_tbl		*strtab;
214 	Str_tbl		*dynstr;
215 	Word		*hashtab;	/* hash table pointer */
216 	Word		*hashbkt;	/* hash table bucket pointer */
217 	Word		*hashchain;	/* hash table chain pointer */
218 	Wk_desc		*wkp;
219 	Alist		*weak = NULL;
220 	ofl_flag_t	flags = ofl->ofl_flags;
221 	Versym		*versym;
222 	Gottable	*gottable;	/* used for display got debugging */
223 					/*	information */
224 	Syminfo		*syminfo;
225 	Sym_s_list	*sorted_syms;	/* table to hold sorted symbols */
226 	Word		ssndx;		/* global index into sorted_syms */
227 	Word		scndx;		/* scoped index into sorted_syms */
228 	size_t		stoff;		/* string offset */
229 	Aliste		idx1;
230 
231 	/*
232 	 * Initialize pointers to the symbol table entries and the symbol
233 	 * table strings.  Skip the first symbol entry and the first string
234 	 * table byte.  Note that if we are not generating any output symbol
235 	 * tables we must still generate and update internal copies so
236 	 * that the relocation phase has the correct information.
237 	 */
238 	if (!(flags & FLG_OF_STRIP) || (flags & FLG_OF_RELOBJ) ||
239 	    ((flags & FLG_OF_STATIC) && ofl->ofl_osversym)) {
240 		symtab = (Sym *)ofl->ofl_ossymtab->os_outdata->d_buf;
241 		symtab[symtab_ndx++] = _sym;
242 		if (ofl->ofl_ossymshndx)
243 			symshndx =
244 			    (Word *)ofl->ofl_ossymshndx->os_outdata->d_buf;
245 	}
246 	if (OFL_ALLOW_DYNSYM(ofl)) {
247 		dynsym = (Sym *)ofl->ofl_osdynsym->os_outdata->d_buf;
248 		dynsym[dynsym_ndx++] = _sym;
249 		/*
250 		 * If we are also constructing a .SUNW_ldynsym section
251 		 * to contain local function symbols, then set it up too.
252 		 */
253 		if (ofl->ofl_osldynsym) {
254 			ldynsym = (Sym *)ofl->ofl_osldynsym->os_outdata->d_buf;
255 			ldynsym[ldynsym_ndx++] = _sym;
256 			ldynsym_cnt = 1 + ofl->ofl_dynlocscnt +
257 			    ofl->ofl_dynscopecnt;
258 
259 			/*
260 			 * If there is a SUNW_ldynsym, then there may also
261 			 * be a .SUNW_dynsymsort and/or .SUNW_dyntlssort
262 			 * sections, used to collect indices of function
263 			 * and data symbols sorted by address order.
264 			 */
265 			if (ofl->ofl_osdynsymsort) {	/* .SUNW_dynsymsort */
266 				dynsymsort = (Word *)
267 				    ofl->ofl_osdynsymsort->os_outdata->d_buf;
268 				dynsymsort_ndx = 0;
269 			}
270 			if (ofl->ofl_osdyntlssort) {	/* .SUNW_dyntlssort */
271 				dyntlssort = (Word *)
272 				    ofl->ofl_osdyntlssort->os_outdata->d_buf;
273 				dyntlssort_ndx = 0;
274 			}
275 		}
276 
277 		/*
278 		 * Initialize the hash table.
279 		 */
280 		hashtab = (Word *)(ofl->ofl_oshash->os_outdata->d_buf);
281 		hashbkt = &hashtab[2];
282 		hashchain = &hashtab[2 + ofl->ofl_hashbkts];
283 		hashtab[0] = ofl->ofl_hashbkts;
284 		hashtab[1] = DYNSYM_ALL_CNT(ofl);
285 		if (ofl->ofl_osdynshndx)
286 			dynshndx =
287 			    (Word *)ofl->ofl_osdynshndx->os_outdata->d_buf;
288 		if (ofl->ofl_osldynshndx)
289 			ldynshndx =
290 			    (Word *)ofl->ofl_osldynshndx->os_outdata->d_buf;
291 	}
292 
293 	/*
294 	 * symndx is the symbol index to be used for relocation processing.  It
295 	 * points to the relevant symtab's (.dynsym or .symtab) symbol ndx.
296 	 */
297 	if (dynsym)
298 		symndx = &dynsym_ndx;
299 	else
300 		symndx = &symtab_ndx;
301 
302 	/*
303 	 * If we have version definitions initialize the version symbol index
304 	 * table.  There is one entry for each symbol which contains the symbols
305 	 * version index.
306 	 */
307 	if (!(flags & FLG_OF_NOVERSEC) &&
308 	    (flags & (FLG_OF_VERNEED | FLG_OF_VERDEF))) {
309 		versym = (Versym *)ofl->ofl_osversym->os_outdata->d_buf;
310 		versym[0] = NULL;
311 	} else
312 		versym = NULL;
313 
314 	/*
315 	 * If syminfo section exists be prepared to fill it in.
316 	 */
317 	if (ofl->ofl_ossyminfo) {
318 		syminfo = ofl->ofl_ossyminfo->os_outdata->d_buf;
319 		syminfo[0].si_flags = SYMINFO_CURRENT;
320 	} else
321 		syminfo = NULL;
322 
323 	/*
324 	 * Setup our string tables.
325 	 */
326 	shstrtab = ofl->ofl_shdrsttab;
327 	strtab = ofl->ofl_strtab;
328 	dynstr = ofl->ofl_dynstrtab;
329 
330 	DBG_CALL(Dbg_syms_sec_title(ofl->ofl_lml));
331 
332 	/*
333 	 * Put output file name to the first .symtab and .SUNW_ldynsym symbol.
334 	 */
335 	if (symtab) {
336 		(void) st_setstring(strtab, ofl->ofl_name, &stoff);
337 		sym = &symtab[symtab_ndx++];
338 		/* LINTED */
339 		sym->st_name = stoff;
340 		sym->st_value = 0;
341 		sym->st_size = 0;
342 		sym->st_info = ELF_ST_INFO(STB_LOCAL, STT_FILE);
343 		sym->st_other = 0;
344 		sym->st_shndx = SHN_ABS;
345 
346 		if (versym && !dynsym)
347 			versym[1] = 0;
348 	}
349 	if (ldynsym) {
350 		(void) st_setstring(dynstr, ofl->ofl_name, &stoff);
351 		sym = &ldynsym[ldynsym_ndx];
352 		/* LINTED */
353 		sym->st_name = stoff;
354 		sym->st_value = 0;
355 		sym->st_size = 0;
356 		sym->st_info = ELF_ST_INFO(STB_LOCAL, STT_FILE);
357 		sym->st_other = 0;
358 		sym->st_shndx = SHN_ABS;
359 
360 		/* Scoped symbols get filled in global loop below */
361 		ldynscopesym_ndx = ldynsym_ndx + 1;
362 		ldynsym_ndx += ofl->ofl_dynscopecnt;
363 	}
364 
365 	/*
366 	 * If we are to display GOT summary information, then allocate
367 	 * the buffer to 'cache' the GOT symbols into now.
368 	 */
369 	if (DBG_ENABLED) {
370 		if ((ofl->ofl_gottable = gottable =
371 		    libld_calloc(ofl->ofl_gotcnt, sizeof (Gottable))) == NULL)
372 			return ((Addr)S_ERROR);
373 	}
374 
375 	/*
376 	 * Traverse the program headers.  Determine the last executable segment
377 	 * and the last data segment so that we can update etext and edata. If
378 	 * we have empty segments (reservations) record them for setting _end.
379 	 */
380 	for (APLIST_TRAVERSE(ofl->ofl_segs, idx1, sgp)) {
381 		Phdr	*phd = &(sgp->sg_phdr);
382 		Os_desc	*osp;
383 		Aliste	idx2;
384 
385 		if (phd->p_type == PT_LOAD) {
386 			if (sgp->sg_osdescs != NULL) {
387 				Word	_flags = phd->p_flags & (PF_W | PF_R);
388 
389 				if (_flags == PF_R)
390 					tsgp = sgp;
391 				else if (_flags == (PF_W | PF_R))
392 					dsgp = sgp;
393 			} else if (sgp->sg_flags & FLG_SG_EMPTY)
394 				esgp = sgp;
395 		}
396 
397 		/*
398 		 * Generate a section symbol for each output section.
399 		 */
400 		for (APLIST_TRAVERSE(sgp->sg_osdescs, idx2, osp)) {
401 			Word	sectndx;
402 
403 			sym = &_sym;
404 			sym->st_value = osp->os_shdr->sh_addr;
405 			sym->st_info = ELF_ST_INFO(STB_LOCAL, STT_SECTION);
406 			/* LINTED */
407 			sectndx = elf_ndxscn(osp->os_scn);
408 
409 			if (symtab) {
410 				if (sectndx >= SHN_LORESERVE) {
411 					symshndx[symtab_ndx] = sectndx;
412 					sym->st_shndx = SHN_XINDEX;
413 				} else {
414 					/* LINTED */
415 					sym->st_shndx = (Half)sectndx;
416 				}
417 				symtab[symtab_ndx++] = *sym;
418 			}
419 
420 			if (dynsym && (osp->os_flags & FLG_OS_OUTREL))
421 				dynsym[dynsym_ndx++] = *sym;
422 
423 			if ((dynsym == NULL) ||
424 			    (osp->os_flags & FLG_OS_OUTREL)) {
425 				if (versym)
426 					versym[*symndx - 1] = 0;
427 				osp->os_identndx = *symndx - 1;
428 				DBG_CALL(Dbg_syms_sec_entry(ofl->ofl_lml,
429 				    osp->os_identndx, sgp, osp));
430 			}
431 
432 			/*
433 			 * Generate the .shstrtab for this section.
434 			 */
435 			(void) st_setstring(shstrtab, osp->os_name, &stoff);
436 			osp->os_shdr->sh_name = (Word)stoff;
437 
438 			/*
439 			 * Find the section index for our special symbols.
440 			 */
441 			if (sgp == tsgp) {
442 				/* LINTED */
443 				etext_ndx = elf_ndxscn(osp->os_scn);
444 			} else if (dsgp == sgp) {
445 				if (osp->os_shdr->sh_type != SHT_NOBITS) {
446 					/* LINTED */
447 					edata_ndx = elf_ndxscn(osp->os_scn);
448 				}
449 			}
450 
451 			if (start_set == 0) {
452 				start = sgp->sg_phdr.p_vaddr;
453 				/* LINTED */
454 				start_ndx = elf_ndxscn(osp->os_scn);
455 				start_set++;
456 			}
457 
458 			/*
459 			 * While we're here, determine whether a .init or .fini
460 			 * section exist.
461 			 */
462 			if ((iosp == NULL) && (strcmp(osp->os_name,
463 			    MSG_ORIG(MSG_SCN_INIT)) == 0))
464 				iosp = osp;
465 			if ((fosp == NULL) && (strcmp(osp->os_name,
466 			    MSG_ORIG(MSG_SCN_FINI)) == 0))
467 				fosp = osp;
468 		}
469 	}
470 
471 	/*
472 	 * Add local register symbols to the .dynsym.  These are required as
473 	 * DT_REGISTER .dynamic entries must have a symbol to reference.
474 	 */
475 	if (ofl->ofl_regsyms && dynsym) {
476 		int	ndx;
477 
478 		for (ndx = 0; ndx < ofl->ofl_regsymsno; ndx++) {
479 			Sym_desc	*rsdp;
480 
481 			if ((rsdp = ofl->ofl_regsyms[ndx]) == NULL)
482 				continue;
483 
484 			if (!SYM_IS_HIDDEN(rsdp) &&
485 			    (ELF_ST_BIND(rsdp->sd_sym->st_info) != STB_LOCAL))
486 				continue;
487 
488 			dynsym[dynsym_ndx] = *(rsdp->sd_sym);
489 			rsdp->sd_symndx = *symndx;
490 
491 			if (dynsym[dynsym_ndx].st_name) {
492 				(void) st_setstring(dynstr, rsdp->sd_name,
493 				    &stoff);
494 				dynsym[dynsym_ndx].st_name = stoff;
495 			}
496 			dynsym_ndx++;
497 		}
498 	}
499 
500 	/*
501 	 * Having traversed all the output segments, warn the user if the
502 	 * traditional text or data segments don't exist.  Otherwise from these
503 	 * segments establish the values for `etext', `edata', `end', `END',
504 	 * and `START'.
505 	 */
506 	if (!(flags & FLG_OF_RELOBJ)) {
507 		Sg_desc	*sgp;
508 
509 		if (tsgp)
510 			etext = tsgp->sg_phdr.p_vaddr + tsgp->sg_phdr.p_filesz;
511 		else {
512 			etext = (Addr)0;
513 			etext_ndx = SHN_ABS;
514 			etext_abs = 1;
515 			if (flags & FLG_OF_VERBOSE)
516 				eprintf(ofl->ofl_lml, ERR_WARNING,
517 				    MSG_INTL(MSG_UPD_NOREADSEG));
518 		}
519 		if (dsgp) {
520 			edata = dsgp->sg_phdr.p_vaddr + dsgp->sg_phdr.p_filesz;
521 		} else {
522 			edata = (Addr)0;
523 			edata_ndx = SHN_ABS;
524 			edata_abs = 1;
525 			if (flags & FLG_OF_VERBOSE)
526 				eprintf(ofl->ofl_lml, ERR_WARNING,
527 				    MSG_INTL(MSG_UPD_NORDWRSEG));
528 		}
529 
530 		if (dsgp == NULL) {
531 			if (tsgp)
532 				sgp = tsgp;
533 			else
534 				sgp = 0;
535 		} else if (tsgp == NULL)
536 			sgp = dsgp;
537 		else if (dsgp->sg_phdr.p_vaddr > tsgp->sg_phdr.p_vaddr)
538 			sgp = dsgp;
539 		else if (dsgp->sg_phdr.p_vaddr < tsgp->sg_phdr.p_vaddr)
540 			sgp = tsgp;
541 		else {
542 			/*
543 			 * One of the segments must be of zero size.
544 			 */
545 			if (tsgp->sg_phdr.p_memsz)
546 				sgp = tsgp;
547 			else
548 				sgp = dsgp;
549 		}
550 
551 		if (esgp && (esgp->sg_phdr.p_vaddr > sgp->sg_phdr.p_vaddr))
552 			sgp = esgp;
553 
554 		if (sgp) {
555 			end = sgp->sg_phdr.p_vaddr + sgp->sg_phdr.p_memsz;
556 
557 			/*
558 			 * If the last loadable segment is a read-only segment,
559 			 * then the application which uses the symbol _end to
560 			 * find the beginning of writable heap area may cause
561 			 * segmentation violation. We adjust the value of the
562 			 * _end to skip to the next page boundary.
563 			 *
564 			 * 6401812 System interface which returs beginning
565 			 *	   heap would be nice.
566 			 * When the above RFE is implemented, the changes below
567 			 * could be changed in a better way.
568 			 */
569 			if ((sgp->sg_phdr.p_flags & PF_W) == 0)
570 				end = (Addr)S_ROUND(end, sysconf(_SC_PAGESIZE));
571 
572 			/*
573 			 * If we're dealing with a memory reservation there are
574 			 * no sections to establish an index for _end, so assign
575 			 * it as an absolute.
576 			 */
577 			if (sgp->sg_osdescs != NULL) {
578 				/*
579 				 * Determine the last section for this segment.
580 				 */
581 				Os_desc	*osp = sgp->sg_osdescs->apl_data
582 				    [sgp->sg_osdescs->apl_nitems - 1];
583 
584 				/* LINTED */
585 				end_ndx = elf_ndxscn(osp->os_scn);
586 			} else {
587 				end_ndx = SHN_ABS;
588 				end_abs = 1;
589 			}
590 		} else {
591 			end = (Addr) 0;
592 			end_ndx = SHN_ABS;
593 			end_abs = 1;
594 			eprintf(ofl->ofl_lml, ERR_WARNING,
595 			    MSG_INTL(MSG_UPD_NOSEG));
596 		}
597 	}
598 
599 	/*
600 	 * Initialize the scoped symbol table entry point.  This is for all
601 	 * the global symbols that have been scoped to locals and will be
602 	 * filled in during global symbol processing so that we don't have
603 	 * to traverse the globals symbol hash array more than once.
604 	 */
605 	if (symtab) {
606 		scopesym_bndx = symtab_ndx;
607 		scopesym_ndx = scopesym_bndx;
608 		symtab_ndx += ofl->ofl_scopecnt;
609 	}
610 
611 	/*
612 	 * If expanding partially expanded symbols under '-z nopartial',
613 	 * prepare to do that.
614 	 */
615 	if (ofl->ofl_isparexpn) {
616 		osp = ofl->ofl_isparexpn->is_osdesc;
617 		parexpnbase = parexpnaddr = (Addr)(osp->os_shdr->sh_addr +
618 		    ofl->ofl_isparexpn->is_indata->d_off);
619 		/* LINTED */
620 		parexpnndx = elf_ndxscn(osp->os_scn);
621 		ofl->ofl_parexpnndx = osp->os_identndx;
622 	}
623 
624 	/*
625 	 * If we are generating a .symtab collect all the local symbols,
626 	 * assigning a new virtual address or displacement (value).
627 	 */
628 	for (APLIST_TRAVERSE(ofl->ofl_objs, idx1, ifl)) {
629 		Xword		lndx, local = ifl->ifl_locscnt;
630 		Cap_desc	*cdp = ifl->ifl_caps;
631 
632 		for (lndx = 1; lndx < local; lndx++) {
633 			Gotndx		*gnp;
634 			uchar_t		type;
635 			Word		*_symshndx;
636 			int		enter_in_symtab, enter_in_ldynsym;
637 			int		update_done;
638 
639 			sdp = ifl->ifl_oldndx[lndx];
640 			sym = sdp->sd_sym;
641 
642 			/*
643 			 * Assign a got offset if necessary.
644 			 */
645 			if ((ld_targ.t_mr.mr_assign_got != NULL) &&
646 			    (*ld_targ.t_mr.mr_assign_got)(ofl, sdp) == S_ERROR)
647 				return ((Addr)S_ERROR);
648 
649 			if (DBG_ENABLED) {
650 				Aliste	idx2;
651 
652 				for (ALIST_TRAVERSE(sdp->sd_GOTndxs,
653 				    idx2, gnp)) {
654 					gottable->gt_sym = sdp;
655 					gottable->gt_gndx.gn_gotndx =
656 					    gnp->gn_gotndx;
657 					gottable->gt_gndx.gn_addend =
658 					    gnp->gn_addend;
659 					gottable++;
660 				}
661 			}
662 
663 			if ((type = ELF_ST_TYPE(sym->st_info)) == STT_SECTION)
664 				continue;
665 
666 			/*
667 			 * Ignore any symbols that have been marked as invalid
668 			 * during input processing.  Providing these aren't used
669 			 * for relocation they'll just be dropped from the
670 			 * output image.
671 			 */
672 			if (sdp->sd_flags & FLG_SY_INVALID)
673 				continue;
674 
675 			/*
676 			 * If the section that this symbol was associated
677 			 * with has been discarded - then we discard
678 			 * the local symbol along with it.
679 			 */
680 			if (sdp->sd_flags & FLG_SY_ISDISC)
681 				continue;
682 
683 			/*
684 			 * If this symbol is from a different file
685 			 * than the input descriptor we are processing,
686 			 * treat it as if it has FLG_SY_ISDISC set.
687 			 * This happens when sloppy_comdat_reloc()
688 			 * replaces a symbol to a discarded comdat section
689 			 * with an equivalent symbol from a different
690 			 * file. We only want to enter such a symbol
691 			 * once --- as part of the file that actually
692 			 * supplies it.
693 			 */
694 			if (ifl != sdp->sd_file)
695 				continue;
696 
697 			/*
698 			 * Generate an output symbol to represent this input
699 			 * symbol.  Even if the symbol table is to be stripped
700 			 * we still need to update any local symbols that are
701 			 * used during relocation.
702 			 */
703 			enter_in_symtab = symtab &&
704 			    (!(ofl->ofl_flags & FLG_OF_REDLSYM) ||
705 			    sdp->sd_move);
706 			enter_in_ldynsym = ldynsym && sdp->sd_name &&
707 			    ldynsym_symtype[type] &&
708 			    !(ofl->ofl_flags & FLG_OF_REDLSYM);
709 			_symshndx = NULL;
710 
711 			if (enter_in_symtab) {
712 				if (!dynsym)
713 					sdp->sd_symndx = *symndx;
714 				symtab[symtab_ndx] = *sym;
715 
716 				/*
717 				 * Provided this isn't an unnamed register
718 				 * symbol, update its name.
719 				 */
720 				if (((sdp->sd_flags & FLG_SY_REGSYM) == 0) ||
721 				    symtab[symtab_ndx].st_name) {
722 					(void) st_setstring(strtab,
723 					    sdp->sd_name, &stoff);
724 					symtab[symtab_ndx].st_name = stoff;
725 				}
726 				sdp->sd_flags &= ~FLG_SY_CLEAN;
727 				if (symshndx)
728 					_symshndx = &symshndx[symtab_ndx];
729 				sdp->sd_sym = sym = &symtab[symtab_ndx++];
730 
731 				if ((sdp->sd_flags & FLG_SY_SPECSEC) &&
732 				    (sym->st_shndx == SHN_ABS) &&
733 				    !enter_in_ldynsym)
734 					continue;
735 			} else if (enter_in_ldynsym) {
736 				/*
737 				 * Not using symtab, but we do have ldynsym
738 				 * available.
739 				 */
740 				ldynsym[ldynsym_ndx] = *sym;
741 				(void) st_setstring(dynstr, sdp->sd_name,
742 				    &stoff);
743 				ldynsym[ldynsym_ndx].st_name = stoff;
744 
745 				sdp->sd_flags &= ~FLG_SY_CLEAN;
746 				if (ldynshndx)
747 					_symshndx = &ldynshndx[ldynsym_ndx];
748 				sdp->sd_sym = sym = &ldynsym[ldynsym_ndx];
749 				/* Add it to sort section if it qualifies */
750 				ADD_TO_DYNSORT(sdp, sym, type, ldynsym_ndx);
751 				ldynsym_ndx++;
752 			} else {	/* Not using symtab or ldynsym */
753 				/*
754 				 * If this symbol requires modifying to provide
755 				 * for a relocation or move table update, make
756 				 * a copy of it.
757 				 */
758 				if (!(sdp->sd_flags & FLG_SY_UPREQD) &&
759 				    !(sdp->sd_move))
760 					continue;
761 				if ((sdp->sd_flags & FLG_SY_SPECSEC) &&
762 				    (sym->st_shndx == SHN_ABS))
763 					continue;
764 
765 				if (ld_sym_copy(sdp) == S_ERROR)
766 					return ((Addr)S_ERROR);
767 				sym = sdp->sd_sym;
768 			}
769 
770 			/*
771 			 * Update the symbols contents if necessary.
772 			 */
773 			update_done = 0;
774 			if (type == STT_FILE) {
775 				sdp->sd_shndx = sym->st_shndx = SHN_ABS;
776 				sdp->sd_flags |= FLG_SY_SPECSEC;
777 				update_done = 1;
778 			}
779 
780 			/*
781 			 * If we are expanding the locally bound partially
782 			 * initialized symbols, then update the address here.
783 			 */
784 			if (ofl->ofl_isparexpn &&
785 			    (sdp->sd_flags & FLG_SY_PAREXPN) && !update_done) {
786 				sym->st_shndx = parexpnndx;
787 				sdp->sd_isc = ofl->ofl_isparexpn;
788 				sym->st_value = parexpnaddr;
789 				parexpnaddr += sym->st_size;
790 				if ((flags & FLG_OF_RELOBJ) == 0)
791 					sym->st_value -= parexpnbase;
792 			}
793 
794 			/*
795 			 * If this isn't an UNDEF symbol (ie. an input section
796 			 * is associated), update the symbols value and index.
797 			 */
798 			if (((isc = sdp->sd_isc) != NULL) && !update_done) {
799 				Word	sectndx;
800 
801 				osp = isc->is_osdesc;
802 				/* LINTED */
803 				sym->st_value +=
804 				    (Off)_elf_getxoff(isc->is_indata);
805 				if ((flags & FLG_OF_RELOBJ) == 0) {
806 					sym->st_value += osp->os_shdr->sh_addr;
807 					/*
808 					 * TLS symbols are relative to
809 					 * the TLS segment.
810 					 */
811 					if ((type == STT_TLS) &&
812 					    (ofl->ofl_tlsphdr)) {
813 						sym->st_value -=
814 						    ofl->ofl_tlsphdr->p_vaddr;
815 					}
816 				}
817 				/* LINTED */
818 				if ((sdp->sd_shndx = sectndx =
819 				    elf_ndxscn(osp->os_scn)) >= SHN_LORESERVE) {
820 					if (_symshndx) {
821 						*_symshndx = sectndx;
822 					}
823 					sym->st_shndx = SHN_XINDEX;
824 				} else {
825 					/* LINTED */
826 					sym->st_shndx = sectndx;
827 				}
828 			}
829 
830 			/*
831 			 * If entering the symbol in both the symtab and the
832 			 * ldynsym, then the one in symtab needs to be
833 			 * copied to ldynsym. If it is only in the ldynsym,
834 			 * then the code above already set it up and we have
835 			 * nothing more to do here.
836 			 */
837 			if (enter_in_symtab && enter_in_ldynsym) {
838 				ldynsym[ldynsym_ndx] = *sym;
839 				(void) st_setstring(dynstr, sdp->sd_name,
840 				    &stoff);
841 				ldynsym[ldynsym_ndx].st_name = stoff;
842 
843 				if (_symshndx && ldynshndx)
844 					ldynshndx[ldynsym_ndx] = *_symshndx;
845 
846 				/* Add it to sort section if it qualifies */
847 				ADD_TO_DYNSORT(sdp, sym, type, ldynsym_ndx);
848 
849 				ldynsym_ndx++;
850 			}
851 		}
852 
853 		/*
854 		 * If this input file has undergone object to symbol
855 		 * capabilities conversion, supply any new capabilities symbols.
856 		 * These symbols are copies of the original global symbols, and
857 		 * follow the existing local symbols that are supplied from this
858 		 * input file (which are identified with a preceding STT_FILE).
859 		 */
860 		if (symtab && cdp && cdp->ca_syms) {
861 			Aliste		idx2;
862 			Cap_sym		*csp;
863 
864 			for (APLIST_TRAVERSE(cdp->ca_syms, idx2, csp)) {
865 				Is_desc	*isp;
866 
867 				sdp = csp->cs_sdp;
868 				sym = sdp->sd_sym;
869 
870 				if ((isp = sdp->sd_isc) != NULL) {
871 					Os_desc	*osp = isp->is_osdesc;
872 
873 					/*
874 					 * Update the symbols value.
875 					 */
876 					/* LINTED */
877 					sym->st_value +=
878 					    (Off)_elf_getxoff(isp->is_indata);
879 					if ((flags & FLG_OF_RELOBJ) == 0)
880 						sym->st_value +=
881 						    osp->os_shdr->sh_addr;
882 
883 					/*
884 					 * Update the symbols section index.
885 					 */
886 					sdp->sd_shndx = sym->st_shndx =
887 					    elf_ndxscn(osp->os_scn);
888 				}
889 
890 				symtab[symtab_ndx] = *sym;
891 				(void) st_setstring(strtab, sdp->sd_name,
892 				    &stoff);
893 				symtab[symtab_ndx].st_name = stoff;
894 				sdp->sd_symndx = symtab_ndx++;
895 			}
896 		}
897 	}
898 
899 	symtab_gbl_bndx = symtab_ndx;	/* .symtab index of 1st global entry */
900 
901 	/*
902 	 * Two special symbols are `_init' and `_fini'.  If these are supplied
903 	 * by crti.o then they are used to represent the total concatenation of
904 	 * the `.init' and `.fini' sections.
905 	 *
906 	 * Determine whether any .init or .fini sections exist.  If these
907 	 * sections exist and a dynamic object is being built, but no `_init'
908 	 * or `_fini' symbols are found, then the user is probably building
909 	 * this object directly from ld(1) rather than using a compiler driver
910 	 * that provides the symbols via crt's.
911 	 *
912 	 * If the .init or .fini section exist, and their associated symbols,
913 	 * determine the size of the sections and updated the symbols value
914 	 * accordingly.
915 	 */
916 	if (((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_INIT_U), SYM_NOHASH, 0,
917 	    ofl)) != NULL) && (sdp->sd_ref == REF_REL_NEED) && sdp->sd_isc &&
918 	    (sdp->sd_isc->is_osdesc == iosp)) {
919 		if (ld_sym_copy(sdp) == S_ERROR)
920 			return ((Addr)S_ERROR);
921 		sdp->sd_sym->st_size = sdp->sd_isc->is_osdesc->os_shdr->sh_size;
922 
923 	} else if (iosp && !(flags & FLG_OF_RELOBJ)) {
924 		eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_SYM_NOCRT),
925 		    MSG_ORIG(MSG_SYM_INIT_U), MSG_ORIG(MSG_SCN_INIT));
926 	}
927 
928 	if (((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_FINI_U), SYM_NOHASH, 0,
929 	    ofl)) != NULL) && (sdp->sd_ref == REF_REL_NEED) && sdp->sd_isc &&
930 	    (sdp->sd_isc->is_osdesc == fosp)) {
931 		if (ld_sym_copy(sdp) == S_ERROR)
932 			return ((Addr)S_ERROR);
933 		sdp->sd_sym->st_size = sdp->sd_isc->is_osdesc->os_shdr->sh_size;
934 
935 	} else if (fosp && !(flags & FLG_OF_RELOBJ)) {
936 		eprintf(ofl->ofl_lml, ERR_WARNING, MSG_INTL(MSG_SYM_NOCRT),
937 		    MSG_ORIG(MSG_SYM_FINI_U), MSG_ORIG(MSG_SCN_FINI));
938 	}
939 
940 	/*
941 	 * Assign .bss information for use with updating COMMON symbols.
942 	 */
943 	if (ofl->ofl_isbss) {
944 		isc = ofl->ofl_isbss;
945 		osp = isc->is_osdesc;
946 
947 		bssaddr = osp->os_shdr->sh_addr +
948 		    (Off)_elf_getxoff(isc->is_indata);
949 		/* LINTED */
950 		bssndx = elf_ndxscn(osp->os_scn);
951 	}
952 
953 #if	defined(_ELF64)
954 	/*
955 	 * For amd64 target, assign .lbss information for use
956 	 * with updating LCOMMON symbols.
957 	 */
958 	if ((ld_targ.t_m.m_mach == EM_AMD64) && ofl->ofl_islbss) {
959 		osp = ofl->ofl_islbss->is_osdesc;
960 
961 		lbssaddr = osp->os_shdr->sh_addr +
962 		    (Off)_elf_getxoff(ofl->ofl_islbss->is_indata);
963 		/* LINTED */
964 		lbssndx = elf_ndxscn(osp->os_scn);
965 	}
966 #endif
967 	/*
968 	 * Assign .tlsbss information for use with updating COMMON symbols.
969 	 */
970 	if (ofl->ofl_istlsbss) {
971 		osp = ofl->ofl_istlsbss->is_osdesc;
972 		tlsbssaddr = osp->os_shdr->sh_addr +
973 		    (Off)_elf_getxoff(ofl->ofl_istlsbss->is_indata);
974 		/* LINTED */
975 		tlsbssndx = elf_ndxscn(osp->os_scn);
976 	}
977 
978 	if ((sorted_syms = libld_calloc(ofl->ofl_globcnt +
979 	    ofl->ofl_elimcnt + ofl->ofl_scopecnt,
980 	    sizeof (*sorted_syms))) == NULL)
981 		return ((Addr)S_ERROR);
982 
983 	scndx = 0;
984 	ssndx = ofl->ofl_scopecnt + ofl->ofl_elimcnt;
985 
986 	DBG_CALL(Dbg_syms_up_title(ofl->ofl_lml));
987 
988 	/*
989 	 * Traverse the internal symbol table updating global symbol information
990 	 * and allocating common.
991 	 */
992 	for (sav = avl_first(&ofl->ofl_symavl); sav;
993 	    sav = AVL_NEXT(&ofl->ofl_symavl, sav)) {
994 		Sym	*symptr;
995 		int	local;
996 		int	restore;
997 
998 		sdp = sav->sav_sdp;
999 
1000 		/*
1001 		 * Ignore any symbols that have been marked as invalid during
1002 		 * input processing.  Providing these aren't used for
1003 		 * relocation, they will be dropped from the output image.
1004 		 */
1005 		if (sdp->sd_flags & FLG_SY_INVALID) {
1006 			DBG_CALL(Dbg_syms_old(ofl, sdp));
1007 			DBG_CALL(Dbg_syms_ignore(ofl, sdp));
1008 			continue;
1009 		}
1010 
1011 		/*
1012 		 * Only needed symbols are copied to the output symbol table.
1013 		 */
1014 		if (sdp->sd_ref == REF_DYN_SEEN)
1015 			continue;
1016 
1017 		if (SYM_IS_HIDDEN(sdp) && (flags & FLG_OF_PROCRED))
1018 			local = 1;
1019 		else
1020 			local = 0;
1021 
1022 		if (local || (ofl->ofl_hashbkts == 0)) {
1023 			sorted_syms[scndx++].sl_sdp = sdp;
1024 		} else {
1025 			sorted_syms[ssndx].sl_hval = sdp->sd_aux->sa_hash %
1026 			    ofl->ofl_hashbkts;
1027 			sorted_syms[ssndx].sl_sdp = sdp;
1028 			ssndx++;
1029 		}
1030 
1031 		/*
1032 		 * Note - expand the COMMON symbols here because an address
1033 		 * must be assigned to them in the same order that space was
1034 		 * calculated in sym_validate().  If this ordering isn't
1035 		 * followed differing alignment requirements can throw us all
1036 		 * out of whack.
1037 		 *
1038 		 * The expanded .bss global symbol is handled here as well.
1039 		 *
1040 		 * The actual adding entries into the symbol table still occurs
1041 		 * below in hashbucket order.
1042 		 */
1043 		symptr = sdp->sd_sym;
1044 		restore = 0;
1045 		if ((sdp->sd_flags & FLG_SY_PAREXPN) ||
1046 		    ((sdp->sd_flags & FLG_SY_SPECSEC) &&
1047 		    (sdp->sd_shndx = symptr->st_shndx) == SHN_COMMON)) {
1048 
1049 			/*
1050 			 * An expanded symbol goes to a special .data section
1051 			 * prepared for that purpose (ofl->ofl_isparexpn).
1052 			 * Assign COMMON allocations to .bss.
1053 			 * Otherwise leave it as is.
1054 			 */
1055 			if (sdp->sd_flags & FLG_SY_PAREXPN) {
1056 				restore = 1;
1057 				sdp->sd_shndx = parexpnndx;
1058 				sdp->sd_flags &= ~FLG_SY_SPECSEC;
1059 				symptr->st_value = (Xword) S_ROUND(
1060 				    parexpnaddr, symptr->st_value);
1061 				parexpnaddr = symptr->st_value +
1062 				    symptr->st_size;
1063 				sdp->sd_isc = ofl->ofl_isparexpn;
1064 				sdp->sd_flags |= FLG_SY_COMMEXP;
1065 
1066 			} else if (ELF_ST_TYPE(symptr->st_info) != STT_TLS &&
1067 			    (local || !(flags & FLG_OF_RELOBJ))) {
1068 				restore = 1;
1069 				sdp->sd_shndx = bssndx;
1070 				sdp->sd_flags &= ~FLG_SY_SPECSEC;
1071 				symptr->st_value = (Xword)S_ROUND(bssaddr,
1072 				    symptr->st_value);
1073 				bssaddr = symptr->st_value + symptr->st_size;
1074 				sdp->sd_isc = ofl->ofl_isbss;
1075 				sdp->sd_flags |= FLG_SY_COMMEXP;
1076 
1077 			} else if (ELF_ST_TYPE(symptr->st_info) == STT_TLS &&
1078 			    (local || !(flags & FLG_OF_RELOBJ))) {
1079 				restore = 1;
1080 				sdp->sd_shndx = tlsbssndx;
1081 				sdp->sd_flags &= ~FLG_SY_SPECSEC;
1082 				symptr->st_value = (Xword)S_ROUND(tlsbssaddr,
1083 				    symptr->st_value);
1084 				tlsbssaddr = symptr->st_value + symptr->st_size;
1085 				sdp->sd_isc = ofl->ofl_istlsbss;
1086 				sdp->sd_flags |= FLG_SY_COMMEXP;
1087 				/*
1088 				 * TLS symbols are relative to the TLS segment.
1089 				 */
1090 				symptr->st_value -= ofl->ofl_tlsphdr->p_vaddr;
1091 			}
1092 #if	defined(_ELF64)
1093 		} else if ((ld_targ.t_m.m_mach == EM_AMD64) &&
1094 		    (sdp->sd_flags & FLG_SY_SPECSEC) &&
1095 		    ((sdp->sd_shndx = symptr->st_shndx) ==
1096 		    SHN_X86_64_LCOMMON) &&
1097 		    ((local || !(flags & FLG_OF_RELOBJ)))) {
1098 			restore = 1;
1099 			sdp->sd_shndx = lbssndx;
1100 			sdp->sd_flags &= ~FLG_SY_SPECSEC;
1101 			symptr->st_value = (Xword)S_ROUND(lbssaddr,
1102 			    symptr->st_value);
1103 			lbssaddr = symptr->st_value + symptr->st_size;
1104 			sdp->sd_isc = ofl->ofl_islbss;
1105 			sdp->sd_flags |= FLG_SY_COMMEXP;
1106 #endif
1107 		}
1108 
1109 		if (restore != 0) {
1110 			uchar_t		type, bind;
1111 
1112 			/*
1113 			 * Make sure this COMMON symbol is returned to the same
1114 			 * binding as was defined in the original relocatable
1115 			 * object reference.
1116 			 */
1117 			type = ELF_ST_TYPE(symptr->st_info);
1118 			if (sdp->sd_flags & FLG_SY_GLOBREF)
1119 				bind = STB_GLOBAL;
1120 			else
1121 				bind = STB_WEAK;
1122 
1123 			symptr->st_info = ELF_ST_INFO(bind, type);
1124 		}
1125 	}
1126 
1127 	/*
1128 	 * If this is a dynamic object then add any local capabilities symbols.
1129 	 */
1130 	if (dynsym && ofl->ofl_capfamilies) {
1131 		Cap_avlnode	*cav;
1132 
1133 		for (cav = avl_first(ofl->ofl_capfamilies); cav;
1134 		    cav = AVL_NEXT(ofl->ofl_capfamilies, cav)) {
1135 			Cap_sym		*csp;
1136 			Aliste		idx;
1137 
1138 			for (APLIST_TRAVERSE(cav->cn_members, idx, csp)) {
1139 				sdp = csp->cs_sdp;
1140 
1141 				DBG_CALL(Dbg_syms_created(ofl->ofl_lml,
1142 				    sdp->sd_name));
1143 				DBG_CALL(Dbg_syms_entered(ofl, sdp->sd_sym,
1144 				    sdp));
1145 
1146 				dynsym[dynsym_ndx] = *sdp->sd_sym;
1147 
1148 				(void) st_setstring(dynstr, sdp->sd_name,
1149 				    &stoff);
1150 				dynsym[dynsym_ndx].st_name = stoff;
1151 
1152 				sdp->sd_sym = &dynsym[dynsym_ndx];
1153 				sdp->sd_symndx = dynsym_ndx;
1154 
1155 				/*
1156 				 * Indicate that this is a capabilities symbol.
1157 				 * Note, that this identification only provides
1158 				 * information regarding the symbol that is
1159 				 * visible from elfdump(1) -y.  The association
1160 				 * of a symbol to its capabilities is derived
1161 				 * from a .SUNW_capinfo entry.
1162 				 */
1163 				if (syminfo) {
1164 					syminfo[dynsym_ndx].si_flags |=
1165 					    SYMINFO_FLG_CAP;
1166 				}
1167 
1168 				dynsym_ndx++;
1169 			}
1170 		}
1171 	}
1172 
1173 	if (ofl->ofl_hashbkts) {
1174 		qsort(sorted_syms + ofl->ofl_scopecnt + ofl->ofl_elimcnt,
1175 		    ofl->ofl_globcnt, sizeof (Sym_s_list),
1176 		    (int (*)(const void *, const void *))sym_hash_compare);
1177 	}
1178 
1179 	for (ssndx = 0; ssndx < (ofl->ofl_elimcnt + ofl->ofl_scopecnt +
1180 	    ofl->ofl_globcnt); ssndx++) {
1181 		const char	*name;
1182 		Sym		*sym;
1183 		Sym_aux		*sap;
1184 		Half		spec;
1185 		int		local = 0, dynlocal = 0, enter_in_symtab;
1186 		Gotndx		*gnp;
1187 		Word		sectndx;
1188 
1189 		sdp = sorted_syms[ssndx].sl_sdp;
1190 		sectndx = 0;
1191 
1192 		if (symtab)
1193 			enter_in_symtab = 1;
1194 		else
1195 			enter_in_symtab = 0;
1196 
1197 		/*
1198 		 * Assign a got offset if necessary.
1199 		 */
1200 		if ((ld_targ.t_mr.mr_assign_got != NULL) &&
1201 		    (*ld_targ.t_mr.mr_assign_got)(ofl, sdp) == S_ERROR)
1202 			return ((Addr)S_ERROR);
1203 
1204 		if (DBG_ENABLED) {
1205 			Aliste	idx2;
1206 
1207 			for (ALIST_TRAVERSE(sdp->sd_GOTndxs, idx2, gnp)) {
1208 				gottable->gt_sym = sdp;
1209 				gottable->gt_gndx.gn_gotndx = gnp->gn_gotndx;
1210 				gottable->gt_gndx.gn_addend = gnp->gn_addend;
1211 				gottable++;
1212 			}
1213 
1214 			if (sdp->sd_aux && sdp->sd_aux->sa_PLTGOTndx) {
1215 				gottable->gt_sym = sdp;
1216 				gottable->gt_gndx.gn_gotndx =
1217 				    sdp->sd_aux->sa_PLTGOTndx;
1218 				gottable++;
1219 			}
1220 		}
1221 
1222 		/*
1223 		 * If this symbol has been marked as being reduced to local
1224 		 * scope then it will have to be placed in the scoped portion
1225 		 * of the .symtab.  Retain the appropriate index for use in
1226 		 * version symbol indexing and relocation.
1227 		 */
1228 		if (SYM_IS_HIDDEN(sdp) && (flags & FLG_OF_PROCRED)) {
1229 			local = 1;
1230 			if (!(sdp->sd_flags & FLG_SY_ELIM) && !dynsym)
1231 				sdp->sd_symndx = scopesym_ndx;
1232 			else
1233 				sdp->sd_symndx = 0;
1234 
1235 			if (sdp->sd_flags & FLG_SY_ELIM) {
1236 				enter_in_symtab = 0;
1237 			} else if (ldynsym && sdp->sd_sym->st_name &&
1238 			    ldynsym_symtype[
1239 			    ELF_ST_TYPE(sdp->sd_sym->st_info)]) {
1240 				dynlocal = 1;
1241 			}
1242 		} else {
1243 			sdp->sd_symndx = *symndx;
1244 		}
1245 
1246 		/*
1247 		 * Copy basic symbol and string information.
1248 		 */
1249 		name = sdp->sd_name;
1250 		sap = sdp->sd_aux;
1251 
1252 		/*
1253 		 * If we require to record version symbol indexes, update the
1254 		 * associated version symbol information for all defined
1255 		 * symbols.  If a version definition is required any zero value
1256 		 * symbol indexes would have been flagged as undefined symbol
1257 		 * errors, however if we're just scoping these need to fall into
1258 		 * the base of global symbols.
1259 		 */
1260 		if (sdp->sd_symndx && versym) {
1261 			Half	vndx = 0;
1262 
1263 			if (sdp->sd_flags & FLG_SY_MVTOCOMM) {
1264 				vndx = VER_NDX_GLOBAL;
1265 			} else if (sdp->sd_ref == REF_REL_NEED) {
1266 				vndx = sap->sa_overndx;
1267 
1268 				if ((vndx == 0) &&
1269 				    (sdp->sd_sym->st_shndx != SHN_UNDEF)) {
1270 					if (SYM_IS_HIDDEN(sdp))
1271 						vndx = VER_NDX_LOCAL;
1272 					else
1273 						vndx = VER_NDX_GLOBAL;
1274 				}
1275 			} else if ((sdp->sd_ref == REF_DYN_NEED) &&
1276 			    (sap->sa_dverndx > 0) &&
1277 			    (sap->sa_dverndx <= sdp->sd_file->ifl_vercnt) &&
1278 			    (sdp->sd_file->ifl_verndx != NULL)) {
1279 				/* Use index of verneed record */
1280 				vndx = sdp->sd_file->ifl_verndx
1281 				    [sap->sa_dverndx].vi_overndx;
1282 			}
1283 			versym[sdp->sd_symndx] = vndx;
1284 		}
1285 
1286 		/*
1287 		 * If we are creating the .syminfo section then set per symbol
1288 		 * flags here.
1289 		 */
1290 		if (sdp->sd_symndx && syminfo &&
1291 		    !(sdp->sd_flags & FLG_SY_NOTAVAIL)) {
1292 			int	ndx = sdp->sd_symndx;
1293 			APlist	**alpp = &(ofl->ofl_symdtent);
1294 
1295 			if (sdp->sd_flags & FLG_SY_MVTOCOMM)
1296 				/*
1297 				 * Identify a copy relocation symbol.
1298 				 */
1299 				syminfo[ndx].si_flags |= SYMINFO_FLG_COPY;
1300 
1301 			if (sdp->sd_ref == REF_DYN_NEED) {
1302 				/*
1303 				 * A reference is bound to a needed dependency.
1304 				 * Save the syminfo entry, so that when the
1305 				 * .dynamic section has been updated, a
1306 				 * DT_NEEDED entry can be associated
1307 				 * (see update_osyminfo()).
1308 				 */
1309 				if (aplist_append(alpp, sdp,
1310 				    AL_CNT_OFL_SYMINFOSYMS) == NULL)
1311 					return (0);
1312 
1313 				/*
1314 				 * Flag that the symbol has a direct association
1315 				 * with the external reference (this is an old
1316 				 * tagging, that has no real effect by itself).
1317 				 */
1318 				syminfo[ndx].si_flags |= SYMINFO_FLG_DIRECT;
1319 
1320 				/*
1321 				 * Flag any lazy or deferred reference.
1322 				 */
1323 				if (sdp->sd_flags & FLG_SY_LAZYLD)
1324 					syminfo[ndx].si_flags |=
1325 					    SYMINFO_FLG_LAZYLOAD;
1326 				if (sdp->sd_flags & FLG_SY_DEFERRED)
1327 					syminfo[ndx].si_flags |=
1328 					    SYMINFO_FLG_DEFERRED;
1329 
1330 				/*
1331 				 * Enable direct symbol bindings if:
1332 				 *
1333 				 *  -	Symbol was identified with the DIRECT
1334 				 *	keyword in a mapfile.
1335 				 *
1336 				 *  -	Symbol reference has been bound to a
1337 				 * 	dependency which was specified as
1338 				 *	requiring direct bindings with -zdirect.
1339 				 *
1340 				 *  -	All symbol references are required to
1341 				 *	use direct bindings via -Bdirect.
1342 				 */
1343 				if (sdp->sd_flags & FLG_SY_DIR)
1344 					syminfo[ndx].si_flags |=
1345 					    SYMINFO_FLG_DIRECTBIND;
1346 
1347 			} else if ((sdp->sd_flags & FLG_SY_EXTERN) &&
1348 			    (sdp->sd_sym->st_shndx == SHN_UNDEF)) {
1349 				/*
1350 				 * If this symbol has been explicitly defined
1351 				 * as external, and remains unresolved, mark
1352 				 * it as external.
1353 				 */
1354 				syminfo[ndx].si_boundto = SYMINFO_BT_EXTERN;
1355 
1356 			} else if ((sdp->sd_flags & FLG_SY_PARENT) &&
1357 			    (sdp->sd_sym->st_shndx == SHN_UNDEF)) {
1358 				/*
1359 				 * If this symbol has been explicitly defined
1360 				 * to be a reference to a parent object,
1361 				 * indicate whether a direct binding should be
1362 				 * established.
1363 				 */
1364 				syminfo[ndx].si_flags |= SYMINFO_FLG_DIRECT;
1365 				syminfo[ndx].si_boundto = SYMINFO_BT_PARENT;
1366 				if (sdp->sd_flags & FLG_SY_DIR)
1367 					syminfo[ndx].si_flags |=
1368 					    SYMINFO_FLG_DIRECTBIND;
1369 
1370 			} else if (sdp->sd_flags & FLG_SY_STDFLTR) {
1371 				/*
1372 				 * A filter definition.  Although this symbol
1373 				 * can only be a stub, it might be necessary to
1374 				 * prevent external direct bindings.
1375 				 */
1376 				syminfo[ndx].si_flags |= SYMINFO_FLG_FILTER;
1377 				if (sdp->sd_flags & FLG_SY_NDIR)
1378 					syminfo[ndx].si_flags |=
1379 					    SYMINFO_FLG_NOEXTDIRECT;
1380 
1381 			} else if (sdp->sd_flags & FLG_SY_AUXFLTR) {
1382 				/*
1383 				 * An auxiliary filter definition.  By nature,
1384 				 * this definition is direct, in that should the
1385 				 * filtee lookup fail, we'll fall back to this
1386 				 * object.  It may still be necessary to
1387 				 * prevent external direct bindings.
1388 				 */
1389 				syminfo[ndx].si_flags |= SYMINFO_FLG_AUXILIARY;
1390 				if (sdp->sd_flags & FLG_SY_NDIR)
1391 					syminfo[ndx].si_flags |=
1392 					    SYMINFO_FLG_NOEXTDIRECT;
1393 
1394 			} else if ((sdp->sd_ref == REF_REL_NEED) &&
1395 			    (sdp->sd_sym->st_shndx != SHN_UNDEF)) {
1396 				/*
1397 				 * This definition exists within the object
1398 				 * being created.  Provide a default boundto
1399 				 * definition, which may be overridden later.
1400 				 */
1401 				syminfo[ndx].si_boundto = SYMINFO_BT_NONE;
1402 
1403 				/*
1404 				 * Indicate whether it is necessary to prevent
1405 				 * external direct bindings.
1406 				 */
1407 				if (sdp->sd_flags & FLG_SY_NDIR) {
1408 					syminfo[ndx].si_flags |=
1409 					    SYMINFO_FLG_NOEXTDIRECT;
1410 				}
1411 
1412 				/*
1413 				 * Indicate that this symbol is acting as an
1414 				 * individual interposer.
1415 				 */
1416 				if (sdp->sd_flags & FLG_SY_INTPOSE) {
1417 					syminfo[ndx].si_flags |=
1418 					    SYMINFO_FLG_INTERPOSE;
1419 				}
1420 
1421 				/*
1422 				 * Indicate that this symbol is deferred, and
1423 				 * hence should not be bound to during BIND_NOW
1424 				 * relocations.
1425 				 */
1426 				if (sdp->sd_flags & FLG_SY_DEFERRED) {
1427 					syminfo[ndx].si_flags |=
1428 					    SYMINFO_FLG_DEFERRED;
1429 				}
1430 
1431 				/*
1432 				 * If external bindings are allowed, indicate
1433 				 * the binding, and a direct binding if
1434 				 * necessary.
1435 				 */
1436 				if ((sdp->sd_flags & FLG_SY_NDIR) == 0) {
1437 					syminfo[ndx].si_flags |=
1438 					    SYMINFO_FLG_DIRECT;
1439 
1440 					if (sdp->sd_flags & FLG_SY_DIR)
1441 						syminfo[ndx].si_flags |=
1442 						    SYMINFO_FLG_DIRECTBIND;
1443 
1444 					/*
1445 					 * Provide a default boundto definition,
1446 					 * which may be overridden later.
1447 					 */
1448 					syminfo[ndx].si_boundto =
1449 					    SYMINFO_BT_SELF;
1450 				}
1451 
1452 				/*
1453 				 * Indicate that this is a capabilities symbol.
1454 				 * Note, that this identification only provides
1455 				 * information regarding the symbol that is
1456 				 * visible from elfdump(1) -y.  The association
1457 				 * of a symbol to its capabilities is derived
1458 				 * from a .SUNW_capinfo entry.
1459 				 */
1460 				if ((sdp->sd_flags & FLG_SY_CAP) &&
1461 				    ofl->ofl_oscapinfo) {
1462 					syminfo[ndx].si_flags |=
1463 					    SYMINFO_FLG_CAP;
1464 				}
1465 			}
1466 		}
1467 
1468 		/*
1469 		 * Note that the `sym' value is reset to be one of the new
1470 		 * symbol table entries.  This symbol will be updated further
1471 		 * depending on the type of the symbol.  Process the .symtab
1472 		 * first, followed by the .dynsym, thus the `sym' value will
1473 		 * remain as the .dynsym value when the .dynsym is present.
1474 		 * This ensures that any versioning symbols st_name value will
1475 		 * be appropriate for the string table used by version
1476 		 * entries.
1477 		 */
1478 		if (enter_in_symtab) {
1479 			Word	_symndx;
1480 
1481 			if (local)
1482 				_symndx = scopesym_ndx;
1483 			else
1484 				_symndx = symtab_ndx;
1485 
1486 			symtab[_symndx] = *sdp->sd_sym;
1487 			sdp->sd_sym = sym = &symtab[_symndx];
1488 			(void) st_setstring(strtab, name, &stoff);
1489 			sym->st_name = stoff;
1490 		}
1491 		if (dynlocal) {
1492 			ldynsym[ldynscopesym_ndx] = *sdp->sd_sym;
1493 			sdp->sd_sym = sym = &ldynsym[ldynscopesym_ndx];
1494 			(void) st_setstring(dynstr, name, &stoff);
1495 			ldynsym[ldynscopesym_ndx].st_name = stoff;
1496 			/* Add it to sort section if it qualifies */
1497 			ADD_TO_DYNSORT(sdp, sym, ELF_ST_TYPE(sym->st_info),
1498 			    ldynscopesym_ndx);
1499 		}
1500 
1501 		if (dynsym && !local) {
1502 			dynsym[dynsym_ndx] = *sdp->sd_sym;
1503 
1504 			/*
1505 			 * Provided this isn't an unnamed register symbol,
1506 			 * update the symbols name and hash value.
1507 			 */
1508 			if (((sdp->sd_flags & FLG_SY_REGSYM) == 0) ||
1509 			    dynsym[dynsym_ndx].st_name) {
1510 				(void) st_setstring(dynstr, name, &stoff);
1511 				dynsym[dynsym_ndx].st_name = stoff;
1512 
1513 				if (stoff) {
1514 					Word	hashval, _hashndx;
1515 
1516 					hashval =
1517 					    sap->sa_hash % ofl->ofl_hashbkts;
1518 
1519 					/* LINTED */
1520 					if (_hashndx = hashbkt[hashval]) {
1521 						while (hashchain[_hashndx]) {
1522 							_hashndx =
1523 							    hashchain[_hashndx];
1524 						}
1525 						hashchain[_hashndx] =
1526 						    sdp->sd_symndx;
1527 					} else {
1528 						hashbkt[hashval] =
1529 						    sdp->sd_symndx;
1530 					}
1531 				}
1532 			}
1533 			sdp->sd_sym = sym = &dynsym[dynsym_ndx];
1534 
1535 			/*
1536 			 * Add it to sort section if it qualifies.
1537 			 * The indexes in that section are relative to the
1538 			 * the adjacent SUNW_ldynsym/dymsym pair, so we
1539 			 * add the number of items in SUNW_ldynsym to the
1540 			 * dynsym index.
1541 			 */
1542 			ADD_TO_DYNSORT(sdp, sym, ELF_ST_TYPE(sym->st_info),
1543 			    ldynsym_cnt + dynsym_ndx);
1544 		}
1545 
1546 		if (!enter_in_symtab && (!dynsym || (local && !dynlocal))) {
1547 			if (!(sdp->sd_flags & FLG_SY_UPREQD))
1548 				continue;
1549 			sym = sdp->sd_sym;
1550 		} else
1551 			sdp->sd_flags &= ~FLG_SY_CLEAN;
1552 
1553 		/*
1554 		 * If we have a weak data symbol for which we need the real
1555 		 * symbol also, save this processing until later.
1556 		 *
1557 		 * The exception to this is if the weak/strong have PLT's
1558 		 * assigned to them.  In that case we don't do the post-weak
1559 		 * processing because the PLT's must be maintained so that we
1560 		 * can do 'interpositioning' on both of the symbols.
1561 		 */
1562 		if ((sap->sa_linkndx) &&
1563 		    (ELF_ST_BIND(sym->st_info) == STB_WEAK) &&
1564 		    (!sap->sa_PLTndx)) {
1565 			Sym_desc	*_sdp;
1566 
1567 			_sdp = sdp->sd_file->ifl_oldndx[sap->sa_linkndx];
1568 
1569 			if (_sdp->sd_ref != REF_DYN_SEEN) {
1570 				Wk_desc	wk;
1571 
1572 				if (enter_in_symtab) {
1573 					if (local) {
1574 						wk.wk_symtab =
1575 						    &symtab[scopesym_ndx];
1576 						scopesym_ndx++;
1577 					} else {
1578 						wk.wk_symtab =
1579 						    &symtab[symtab_ndx];
1580 						symtab_ndx++;
1581 					}
1582 				} else {
1583 					wk.wk_symtab = NULL;
1584 				}
1585 				if (dynsym) {
1586 					if (!local) {
1587 						wk.wk_dynsym =
1588 						    &dynsym[dynsym_ndx];
1589 						dynsym_ndx++;
1590 					} else if (dynlocal) {
1591 						wk.wk_dynsym =
1592 						    &ldynsym[ldynscopesym_ndx];
1593 						ldynscopesym_ndx++;
1594 					}
1595 				} else {
1596 					wk.wk_dynsym = NULL;
1597 				}
1598 				wk.wk_weak = sdp;
1599 				wk.wk_alias = _sdp;
1600 
1601 				if (alist_append(&weak, &wk,
1602 				    sizeof (Wk_desc), AL_CNT_WEAK) == NULL)
1603 					return ((Addr)S_ERROR);
1604 
1605 				continue;
1606 			}
1607 		}
1608 
1609 		DBG_CALL(Dbg_syms_old(ofl, sdp));
1610 
1611 		spec = NULL;
1612 		/*
1613 		 * assign new symbol value.
1614 		 */
1615 		sectndx = sdp->sd_shndx;
1616 		if (sectndx == SHN_UNDEF) {
1617 			if (((sdp->sd_flags & FLG_SY_REGSYM) == 0) &&
1618 			    (sym->st_value != 0)) {
1619 				eprintf(ofl->ofl_lml, ERR_WARNING,
1620 				    MSG_INTL(MSG_SYM_NOTNULL),
1621 				    demangle(name), sdp->sd_file->ifl_name);
1622 			}
1623 
1624 			/*
1625 			 * Undefined weak global, if we are generating a static
1626 			 * executable, output as an absolute zero.  Otherwise
1627 			 * leave it as is, ld.so.1 will skip symbols of this
1628 			 * type (this technique allows applications and
1629 			 * libraries to test for the existence of a symbol as an
1630 			 * indication of the presence or absence of certain
1631 			 * functionality).
1632 			 */
1633 			if (OFL_IS_STATIC_EXEC(ofl) &&
1634 			    (ELF_ST_BIND(sym->st_info) == STB_WEAK)) {
1635 				sdp->sd_flags |= FLG_SY_SPECSEC;
1636 				sdp->sd_shndx = sectndx = SHN_ABS;
1637 			}
1638 		} else if ((sdp->sd_flags & FLG_SY_SPECSEC) &&
1639 		    (sectndx == SHN_COMMON)) {
1640 			/* COMMONs have already been processed */
1641 			/* EMPTY */
1642 			;
1643 		} else {
1644 			if ((sdp->sd_flags & FLG_SY_SPECSEC) &&
1645 			    (sectndx == SHN_ABS))
1646 				spec = sdp->sd_aux->sa_symspec;
1647 
1648 			/* LINTED */
1649 			if (sdp->sd_flags & FLG_SY_COMMEXP) {
1650 				/*
1651 				 * This is (or was) a COMMON symbol which was
1652 				 * processed above - no processing
1653 				 * required here.
1654 				 */
1655 				;
1656 			} else if (sdp->sd_ref == REF_DYN_NEED) {
1657 				uchar_t	type, bind;
1658 
1659 				sectndx = SHN_UNDEF;
1660 				sym->st_value = 0;
1661 				sym->st_size = 0;
1662 
1663 				/*
1664 				 * Make sure this undefined symbol is returned
1665 				 * to the same binding as was defined in the
1666 				 * original relocatable object reference.
1667 				 */
1668 				type = ELF_ST_TYPE(sym-> st_info);
1669 				if (sdp->sd_flags & FLG_SY_GLOBREF)
1670 					bind = STB_GLOBAL;
1671 				else
1672 					bind = STB_WEAK;
1673 
1674 				sym->st_info = ELF_ST_INFO(bind, type);
1675 
1676 			} else if (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) &&
1677 			    (sdp->sd_ref == REF_REL_NEED)) {
1678 				osp = sdp->sd_isc->is_osdesc;
1679 				/* LINTED */
1680 				sectndx = elf_ndxscn(osp->os_scn);
1681 
1682 				/*
1683 				 * In an executable, the new symbol value is the
1684 				 * old value (offset into defining section) plus
1685 				 * virtual address of defining section.  In a
1686 				 * relocatable, the new value is the old value
1687 				 * plus the displacement of the section within
1688 				 * the file.
1689 				 */
1690 				/* LINTED */
1691 				sym->st_value +=
1692 				    (Off)_elf_getxoff(sdp->sd_isc->is_indata);
1693 
1694 				if (!(flags & FLG_OF_RELOBJ)) {
1695 					sym->st_value += osp->os_shdr->sh_addr;
1696 					/*
1697 					 * TLS symbols are relative to
1698 					 * the TLS segment.
1699 					 */
1700 					if ((ELF_ST_TYPE(sym->st_info) ==
1701 					    STT_TLS) && (ofl->ofl_tlsphdr))
1702 						sym->st_value -=
1703 						    ofl->ofl_tlsphdr->p_vaddr;
1704 				}
1705 			}
1706 		}
1707 
1708 		if (spec) {
1709 			switch (spec) {
1710 			case SDAUX_ID_ETEXT:
1711 				sym->st_value = etext;
1712 				sectndx = etext_ndx;
1713 				if (etext_abs)
1714 					sdp->sd_flags |= FLG_SY_SPECSEC;
1715 				else
1716 					sdp->sd_flags &= ~FLG_SY_SPECSEC;
1717 				break;
1718 			case SDAUX_ID_EDATA:
1719 				sym->st_value = edata;
1720 				sectndx = edata_ndx;
1721 				if (edata_abs)
1722 					sdp->sd_flags |= FLG_SY_SPECSEC;
1723 				else
1724 					sdp->sd_flags &= ~FLG_SY_SPECSEC;
1725 				break;
1726 			case SDAUX_ID_END:
1727 				sym->st_value = end;
1728 				sectndx = end_ndx;
1729 				if (end_abs)
1730 					sdp->sd_flags |= FLG_SY_SPECSEC;
1731 				else
1732 					sdp->sd_flags &= ~FLG_SY_SPECSEC;
1733 				break;
1734 			case SDAUX_ID_START:
1735 				sym->st_value = start;
1736 				sectndx = start_ndx;
1737 				sdp->sd_flags &= ~FLG_SY_SPECSEC;
1738 				break;
1739 			case SDAUX_ID_DYN:
1740 				if (flags & FLG_OF_DYNAMIC) {
1741 					sym->st_value = ofl->
1742 					    ofl_osdynamic->os_shdr->sh_addr;
1743 					/* LINTED */
1744 					sectndx = elf_ndxscn(
1745 					    ofl->ofl_osdynamic->os_scn);
1746 					sdp->sd_flags &= ~FLG_SY_SPECSEC;
1747 				}
1748 				break;
1749 			case SDAUX_ID_PLT:
1750 				if (ofl->ofl_osplt) {
1751 					sym->st_value = ofl->
1752 					    ofl_osplt->os_shdr->sh_addr;
1753 					/* LINTED */
1754 					sectndx = elf_ndxscn(
1755 					    ofl->ofl_osplt->os_scn);
1756 					sdp->sd_flags &= ~FLG_SY_SPECSEC;
1757 				}
1758 				break;
1759 			case SDAUX_ID_GOT:
1760 				/*
1761 				 * Symbol bias for negative growing tables is
1762 				 * stored in symbol's value during
1763 				 * allocate_got().
1764 				 */
1765 				sym->st_value += ofl->
1766 				    ofl_osgot->os_shdr->sh_addr;
1767 				/* LINTED */
1768 				sectndx = elf_ndxscn(ofl->
1769 				    ofl_osgot->os_scn);
1770 				sdp->sd_flags &= ~FLG_SY_SPECSEC;
1771 				break;
1772 			default:
1773 				/* NOTHING */
1774 				;
1775 			}
1776 		}
1777 
1778 		/*
1779 		 * If a plt index has been assigned to an undefined function,
1780 		 * update the symbols value to the appropriate .plt address.
1781 		 */
1782 		if ((flags & FLG_OF_DYNAMIC) && (flags & FLG_OF_EXEC) &&
1783 		    (sdp->sd_file) &&
1784 		    (sdp->sd_file->ifl_ehdr->e_type == ET_DYN) &&
1785 		    (ELF_ST_TYPE(sym->st_info) == STT_FUNC) &&
1786 		    !(flags & FLG_OF_BFLAG)) {
1787 			if (sap->sa_PLTndx)
1788 				sym->st_value =
1789 				    (*ld_targ.t_mr.mr_calc_plt_addr)(sdp, ofl);
1790 		}
1791 
1792 		/*
1793 		 * Finish updating the symbols.
1794 		 */
1795 
1796 		/*
1797 		 * Sym Update: if scoped local - set local binding
1798 		 */
1799 		if (local)
1800 			sym->st_info = ELF_ST_INFO(STB_LOCAL,
1801 			    ELF_ST_TYPE(sym->st_info));
1802 
1803 		/*
1804 		 * Sym Updated: If both the .symtab and .dynsym
1805 		 * are present then we've actually updated the information in
1806 		 * the .dynsym, therefore copy this same information to the
1807 		 * .symtab entry.
1808 		 */
1809 		sdp->sd_shndx = sectndx;
1810 		if (enter_in_symtab && dynsym && (!local || dynlocal)) {
1811 			Word _symndx = dynlocal ? scopesym_ndx : symtab_ndx;
1812 
1813 			symtab[_symndx].st_value = sym->st_value;
1814 			symtab[_symndx].st_size = sym->st_size;
1815 			symtab[_symndx].st_info = sym->st_info;
1816 			symtab[_symndx].st_other = sym->st_other;
1817 		}
1818 
1819 		if (enter_in_symtab) {
1820 			Word	_symndx;
1821 
1822 			if (local)
1823 				_symndx = scopesym_ndx++;
1824 			else
1825 				_symndx = symtab_ndx++;
1826 			if (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) &&
1827 			    (sectndx >= SHN_LORESERVE)) {
1828 				assert(symshndx != NULL);
1829 				symshndx[_symndx] = sectndx;
1830 				symtab[_symndx].st_shndx = SHN_XINDEX;
1831 			} else {
1832 				/* LINTED */
1833 				symtab[_symndx].st_shndx = (Half)sectndx;
1834 			}
1835 		}
1836 
1837 		if (dynsym && (!local || dynlocal)) {
1838 			/*
1839 			 * dynsym and ldynsym are distinct tables, so
1840 			 * we use indirection to access the right one
1841 			 * and the related extended section index array.
1842 			 */
1843 			Word	_symndx;
1844 			Sym	*_dynsym;
1845 			Word	*_dynshndx;
1846 
1847 			if (!local) {
1848 				_symndx = dynsym_ndx++;
1849 				_dynsym = dynsym;
1850 				_dynshndx = dynshndx;
1851 			} else {
1852 				_symndx = ldynscopesym_ndx++;
1853 				_dynsym = ldynsym;
1854 				_dynshndx = ldynshndx;
1855 			}
1856 			if (((sdp->sd_flags & FLG_SY_SPECSEC) == 0) &&
1857 			    (sectndx >= SHN_LORESERVE)) {
1858 				assert(_dynshndx != NULL);
1859 				_dynshndx[_symndx] = sectndx;
1860 				_dynsym[_symndx].st_shndx = SHN_XINDEX;
1861 			} else {
1862 				/* LINTED */
1863 				_dynsym[_symndx].st_shndx = (Half)sectndx;
1864 			}
1865 		}
1866 
1867 		DBG_CALL(Dbg_syms_new(ofl, sym, sdp));
1868 	}
1869 
1870 	/*
1871 	 * Now that all the symbols have been processed update any weak symbols
1872 	 * information (ie. copy all information except `st_name').  As both
1873 	 * symbols will be represented in the output, return the weak symbol to
1874 	 * its correct type.
1875 	 */
1876 	for (ALIST_TRAVERSE(weak, idx1, wkp)) {
1877 		Sym_desc	*sdp, *_sdp;
1878 		Sym		*sym, *_sym, *__sym;
1879 		uchar_t		bind;
1880 
1881 		sdp = wkp->wk_weak;
1882 		_sdp = wkp->wk_alias;
1883 		_sym = __sym = _sdp->sd_sym;
1884 
1885 		sdp->sd_flags |= FLG_SY_WEAKDEF;
1886 
1887 		/*
1888 		 * If the symbol definition has been scoped then assign it to
1889 		 * be local, otherwise if it's from a shared object then we need
1890 		 * to maintain the binding of the original reference.
1891 		 */
1892 		if (SYM_IS_HIDDEN(sdp)) {
1893 			if (flags & FLG_OF_PROCRED)
1894 				bind = STB_LOCAL;
1895 			else
1896 				bind = STB_WEAK;
1897 		} else if ((sdp->sd_ref == REF_DYN_NEED) &&
1898 		    (sdp->sd_flags & FLG_SY_GLOBREF))
1899 			bind = STB_GLOBAL;
1900 		else
1901 			bind = STB_WEAK;
1902 
1903 		DBG_CALL(Dbg_syms_old(ofl, sdp));
1904 		if ((sym = wkp->wk_symtab) != NULL) {
1905 			sym->st_value = _sym->st_value;
1906 			sym->st_size = _sym->st_size;
1907 			sym->st_other = _sym->st_other;
1908 			sym->st_shndx = _sym->st_shndx;
1909 			sym->st_info = ELF_ST_INFO(bind,
1910 			    ELF_ST_TYPE(sym->st_info));
1911 			__sym = sym;
1912 		}
1913 		if ((sym = wkp->wk_dynsym) != NULL) {
1914 			sym->st_value = _sym->st_value;
1915 			sym->st_size = _sym->st_size;
1916 			sym->st_other = _sym->st_other;
1917 			sym->st_shndx = _sym->st_shndx;
1918 			sym->st_info = ELF_ST_INFO(bind,
1919 			    ELF_ST_TYPE(sym->st_info));
1920 			__sym = sym;
1921 		}
1922 		DBG_CALL(Dbg_syms_new(ofl, __sym, sdp));
1923 	}
1924 
1925 	/*
1926 	 * Now display GOT debugging information if required.
1927 	 */
1928 	DBG_CALL(Dbg_got_display(ofl, 0, 0,
1929 	    ld_targ.t_m.m_got_xnumber, ld_targ.t_m.m_got_entsize));
1930 
1931 	/*
1932 	 * Update the section headers information. sh_info is
1933 	 * supposed to contain the offset at which the first
1934 	 * global symbol resides in the symbol table, while
1935 	 * sh_link contains the section index of the associated
1936 	 * string table.
1937 	 */
1938 	if (symtab) {
1939 		Shdr	*shdr = ofl->ofl_ossymtab->os_shdr;
1940 
1941 		shdr->sh_info = symtab_gbl_bndx;
1942 		/* LINTED */
1943 		shdr->sh_link = (Word)elf_ndxscn(ofl->ofl_osstrtab->os_scn);
1944 		if (symshndx)
1945 			ofl->ofl_ossymshndx->os_shdr->sh_link =
1946 			    (Word)elf_ndxscn(ofl->ofl_ossymtab->os_scn);
1947 
1948 		/*
1949 		 * Ensure that the expected number of symbols
1950 		 * were entered into the right spots:
1951 		 *	- Scoped symbols in the right range
1952 		 *	- Globals start at the right spot
1953 		 *		(correct number of locals entered)
1954 		 *	- The table is exactly filled
1955 		 *		(correct number of globals entered)
1956 		 */
1957 		assert((scopesym_bndx + ofl->ofl_scopecnt) == scopesym_ndx);
1958 		assert(shdr->sh_info == SYMTAB_LOC_CNT(ofl));
1959 		assert((shdr->sh_info + ofl->ofl_globcnt) == symtab_ndx);
1960 	}
1961 	if (dynsym) {
1962 		Shdr	*shdr = ofl->ofl_osdynsym->os_shdr;
1963 
1964 		shdr->sh_info = DYNSYM_LOC_CNT(ofl);
1965 		/* LINTED */
1966 		shdr->sh_link = (Word)elf_ndxscn(ofl->ofl_osdynstr->os_scn);
1967 
1968 		ofl->ofl_oshash->os_shdr->sh_link =
1969 		    /* LINTED */
1970 		    (Word)elf_ndxscn(ofl->ofl_osdynsym->os_scn);
1971 		if (dynshndx) {
1972 			shdr = ofl->ofl_osdynshndx->os_shdr;
1973 			shdr->sh_link =
1974 			    (Word)elf_ndxscn(ofl->ofl_osdynsym->os_scn);
1975 		}
1976 	}
1977 	if (ldynsym) {
1978 		Shdr	*shdr = ofl->ofl_osldynsym->os_shdr;
1979 
1980 		/* ldynsym has no globals, so give index one past the end */
1981 		shdr->sh_info = ldynsym_ndx;
1982 
1983 		/*
1984 		 * The ldynsym and dynsym must be adjacent. The
1985 		 * idea is that rtld should be able to start with
1986 		 * the ldynsym and march straight through the end
1987 		 * of dynsym, seeing them as a single symbol table,
1988 		 * despite the fact that they are in distinct sections.
1989 		 * Ensure that this happened correctly.
1990 		 *
1991 		 * Note that I use ldynsym_ndx here instead of the
1992 		 * computation I used to set the section size
1993 		 * (found in ldynsym_cnt). The two will agree, unless
1994 		 * we somehow miscounted symbols or failed to insert them
1995 		 * all. Using ldynsym_ndx here catches that error in
1996 		 * addition to checking for adjacency.
1997 		 */
1998 		assert(dynsym == (ldynsym + ldynsym_ndx));
1999 
2000 
2001 		/* LINTED */
2002 		shdr->sh_link = (Word)elf_ndxscn(ofl->ofl_osdynstr->os_scn);
2003 
2004 		if (ldynshndx) {
2005 			shdr = ofl->ofl_osldynshndx->os_shdr;
2006 			shdr->sh_link =
2007 			    (Word)elf_ndxscn(ofl->ofl_osldynsym->os_scn);
2008 		}
2009 
2010 		/*
2011 		 * The presence of .SUNW_ldynsym means that there may be
2012 		 * associated sort sections, one for regular symbols
2013 		 * and the other for TLS. Each sort section needs the
2014 		 * following done:
2015 		 *	- Section header link references .SUNW_ldynsym
2016 		 *	- Should have received the expected # of items
2017 		 *	- Sorted by increasing address
2018 		 */
2019 		if (ofl->ofl_osdynsymsort) {	/* .SUNW_dynsymsort */
2020 			ofl->ofl_osdynsymsort->os_shdr->sh_link =
2021 			    (Word)elf_ndxscn(ofl->ofl_osldynsym->os_scn);
2022 			assert(ofl->ofl_dynsymsortcnt == dynsymsort_ndx);
2023 
2024 			if (dynsymsort_ndx > 1) {
2025 				dynsort_compare_syms = ldynsym;
2026 				qsort(dynsymsort, dynsymsort_ndx,
2027 				    sizeof (*dynsymsort), dynsort_compare);
2028 				dynsort_dupwarn(ofl, ldynsym,
2029 				    st_getstrbuf(dynstr),
2030 				    dynsymsort, dynsymsort_ndx,
2031 				    MSG_ORIG(MSG_SCN_DYNSYMSORT));
2032 			}
2033 		}
2034 		if (ofl->ofl_osdyntlssort) {	/* .SUNW_dyntlssort */
2035 			ofl->ofl_osdyntlssort->os_shdr->sh_link =
2036 			    (Word)elf_ndxscn(ofl->ofl_osldynsym->os_scn);
2037 			assert(ofl->ofl_dyntlssortcnt == dyntlssort_ndx);
2038 
2039 			if (dyntlssort_ndx > 1) {
2040 				dynsort_compare_syms = ldynsym;
2041 				qsort(dyntlssort, dyntlssort_ndx,
2042 				    sizeof (*dyntlssort), dynsort_compare);
2043 				dynsort_dupwarn(ofl, ldynsym,
2044 				    st_getstrbuf(dynstr),
2045 				    dyntlssort, dyntlssort_ndx,
2046 				    MSG_ORIG(MSG_SCN_DYNTLSSORT));
2047 			}
2048 		}
2049 	}
2050 
2051 	/*
2052 	 * Used by ld.so.1 only.
2053 	 */
2054 	return (etext);
2055 
2056 #undef ADD_TO_DYNSORT
2057 }
2058 
2059 /*
2060  * Build the dynamic section.
2061  *
2062  * This routine must be maintained in parallel with make_dynamic()
2063  * in sections.c
2064  */
2065 static int
2066 update_odynamic(Ofl_desc *ofl)
2067 {
2068 	Aliste		idx;
2069 	Ifl_desc	*ifl;
2070 	Sym_desc	*sdp;
2071 	Shdr		*shdr;
2072 	Dyn		*_dyn = (Dyn *)ofl->ofl_osdynamic->os_outdata->d_buf;
2073 	Dyn		*dyn;
2074 	Os_desc		*symosp, *strosp;
2075 	Str_tbl		*strtbl;
2076 	size_t		stoff;
2077 	ofl_flag_t	flags = ofl->ofl_flags;
2078 	int		not_relobj = !(flags & FLG_OF_RELOBJ);
2079 	Word		cnt;
2080 
2081 	/*
2082 	 * Relocatable objects can be built with -r and -dy to trigger the
2083 	 * creation of a .dynamic section.  This model is used to create kernel
2084 	 * device drivers.  The .dynamic section provides a subset of userland
2085 	 * .dynamic entries, typically entries such as DT_NEEDED and DT_RUNPATH.
2086 	 *
2087 	 * Within a dynamic object, any .dynamic string references are to the
2088 	 * .dynstr table.  Within a relocatable object, these strings can reside
2089 	 * within the .strtab.
2090 	 */
2091 	if (OFL_IS_STATIC_OBJ(ofl)) {
2092 		symosp = ofl->ofl_ossymtab;
2093 		strosp = ofl->ofl_osstrtab;
2094 		strtbl = ofl->ofl_strtab;
2095 	} else {
2096 		symosp = ofl->ofl_osdynsym;
2097 		strosp = ofl->ofl_osdynstr;
2098 		strtbl = ofl->ofl_dynstrtab;
2099 	}
2100 
2101 	/* LINTED */
2102 	ofl->ofl_osdynamic->os_shdr->sh_link = (Word)elf_ndxscn(strosp->os_scn);
2103 
2104 	dyn = _dyn;
2105 
2106 	for (APLIST_TRAVERSE(ofl->ofl_sos, idx, ifl)) {
2107 		if ((ifl->ifl_flags &
2108 		    (FLG_IF_IGNORE | FLG_IF_DEPREQD)) == FLG_IF_IGNORE)
2109 			continue;
2110 
2111 		/*
2112 		 * Create and set up the DT_POSFLAG_1 entry here if required.
2113 		 */
2114 		if ((ifl->ifl_flags & MSK_IF_POSFLAG1) &&
2115 		    (ifl->ifl_flags & FLG_IF_NEEDED) && not_relobj) {
2116 			dyn->d_tag = DT_POSFLAG_1;
2117 			if (ifl->ifl_flags & FLG_IF_LAZYLD)
2118 				dyn->d_un.d_val = DF_P1_LAZYLOAD;
2119 			if (ifl->ifl_flags & FLG_IF_GRPPRM)
2120 				dyn->d_un.d_val |= DF_P1_GROUPPERM;
2121 			if (ifl->ifl_flags & FLG_IF_DEFERRED)
2122 				dyn->d_un.d_val |= DF_P1_DEFERRED;
2123 			dyn++;
2124 		}
2125 
2126 		if (ifl->ifl_flags & (FLG_IF_NEEDED | FLG_IF_NEEDSTR))
2127 			dyn->d_tag = DT_NEEDED;
2128 		else
2129 			continue;
2130 
2131 		(void) st_setstring(strtbl, ifl->ifl_soname, &stoff);
2132 		dyn->d_un.d_val = stoff;
2133 		/* LINTED */
2134 		ifl->ifl_neededndx = (Half)(((uintptr_t)dyn - (uintptr_t)_dyn) /
2135 		    sizeof (Dyn));
2136 		dyn++;
2137 	}
2138 
2139 	if (not_relobj) {
2140 		if (ofl->ofl_dtsfltrs != NULL) {
2141 			Dfltr_desc	*dftp;
2142 
2143 			for (ALIST_TRAVERSE(ofl->ofl_dtsfltrs, idx, dftp)) {
2144 				if (dftp->dft_flag == FLG_SY_AUXFLTR)
2145 					dyn->d_tag = DT_SUNW_AUXILIARY;
2146 				else
2147 					dyn->d_tag = DT_SUNW_FILTER;
2148 
2149 				(void) st_setstring(strtbl, dftp->dft_str,
2150 				    &stoff);
2151 				dyn->d_un.d_val = stoff;
2152 				dftp->dft_ndx = (Half)(((uintptr_t)dyn -
2153 				    (uintptr_t)_dyn) / sizeof (Dyn));
2154 				dyn++;
2155 			}
2156 		}
2157 		if (((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_INIT_U),
2158 		    SYM_NOHASH, 0, ofl)) != NULL) &&
2159 		    (sdp->sd_ref == REF_REL_NEED) &&
2160 		    (sdp->sd_sym->st_shndx != SHN_UNDEF)) {
2161 			dyn->d_tag = DT_INIT;
2162 			dyn->d_un.d_ptr = sdp->sd_sym->st_value;
2163 			dyn++;
2164 		}
2165 		if (((sdp = ld_sym_find(MSG_ORIG(MSG_SYM_FINI_U),
2166 		    SYM_NOHASH, 0, ofl)) != NULL) &&
2167 		    (sdp->sd_ref == REF_REL_NEED) &&
2168 		    (sdp->sd_sym->st_shndx != SHN_UNDEF)) {
2169 			dyn->d_tag = DT_FINI;
2170 			dyn->d_un.d_ptr = sdp->sd_sym->st_value;
2171 			dyn++;
2172 		}
2173 		if (ofl->ofl_soname) {
2174 			dyn->d_tag = DT_SONAME;
2175 			(void) st_setstring(strtbl, ofl->ofl_soname, &stoff);
2176 			dyn->d_un.d_val = stoff;
2177 			dyn++;
2178 		}
2179 		if (ofl->ofl_filtees) {
2180 			if (flags & FLG_OF_AUX) {
2181 				dyn->d_tag = DT_AUXILIARY;
2182 			} else {
2183 				dyn->d_tag = DT_FILTER;
2184 			}
2185 			(void) st_setstring(strtbl, ofl->ofl_filtees, &stoff);
2186 			dyn->d_un.d_val = stoff;
2187 			dyn++;
2188 		}
2189 	}
2190 
2191 	if (ofl->ofl_rpath) {
2192 		(void) st_setstring(strtbl, ofl->ofl_rpath, &stoff);
2193 		dyn->d_tag = DT_RUNPATH;
2194 		dyn->d_un.d_val = stoff;
2195 		dyn++;
2196 		dyn->d_tag = DT_RPATH;
2197 		dyn->d_un.d_val = stoff;
2198 		dyn++;
2199 	}
2200 
2201 	if (not_relobj) {
2202 		Aliste	idx;
2203 		Sg_desc	*sgp;
2204 
2205 		if (ofl->ofl_config) {
2206 			dyn->d_tag = DT_CONFIG;
2207 			(void) st_setstring(strtbl, ofl->ofl_config, &stoff);
2208 			dyn->d_un.d_val = stoff;
2209 			dyn++;
2210 		}
2211 		if (ofl->ofl_depaudit) {
2212 			dyn->d_tag = DT_DEPAUDIT;
2213 			(void) st_setstring(strtbl, ofl->ofl_depaudit, &stoff);
2214 			dyn->d_un.d_val = stoff;
2215 			dyn++;
2216 		}
2217 		if (ofl->ofl_audit) {
2218 			dyn->d_tag = DT_AUDIT;
2219 			(void) st_setstring(strtbl, ofl->ofl_audit, &stoff);
2220 			dyn->d_un.d_val = stoff;
2221 			dyn++;
2222 		}
2223 
2224 		dyn->d_tag = DT_HASH;
2225 		dyn->d_un.d_ptr = ofl->ofl_oshash->os_shdr->sh_addr;
2226 		dyn++;
2227 
2228 		shdr = strosp->os_shdr;
2229 		dyn->d_tag = DT_STRTAB;
2230 		dyn->d_un.d_ptr = shdr->sh_addr;
2231 		dyn++;
2232 
2233 		dyn->d_tag = DT_STRSZ;
2234 		dyn->d_un.d_ptr = shdr->sh_size;
2235 		dyn++;
2236 
2237 		/*
2238 		 * Note, the shdr is set and used in the ofl->ofl_osldynsym case
2239 		 * that follows.
2240 		 */
2241 		shdr = symosp->os_shdr;
2242 		dyn->d_tag = DT_SYMTAB;
2243 		dyn->d_un.d_ptr = shdr->sh_addr;
2244 		dyn++;
2245 
2246 		dyn->d_tag = DT_SYMENT;
2247 		dyn->d_un.d_ptr = shdr->sh_entsize;
2248 		dyn++;
2249 
2250 		if (ofl->ofl_osldynsym) {
2251 			Shdr	*lshdr = ofl->ofl_osldynsym->os_shdr;
2252 
2253 			/*
2254 			 * We have arranged for the .SUNW_ldynsym data to be
2255 			 * immediately in front of the .dynsym data.
2256 			 * This means that you could start at the top
2257 			 * of .SUNW_ldynsym and see the data for both tables
2258 			 * without a break. This is the view we want to
2259 			 * provide for DT_SUNW_SYMTAB, which is why we
2260 			 * add the lengths together.
2261 			 */
2262 			dyn->d_tag = DT_SUNW_SYMTAB;
2263 			dyn->d_un.d_ptr = lshdr->sh_addr;
2264 			dyn++;
2265 
2266 			dyn->d_tag = DT_SUNW_SYMSZ;
2267 			dyn->d_un.d_val = lshdr->sh_size + shdr->sh_size;
2268 			dyn++;
2269 		}
2270 
2271 		if (ofl->ofl_osdynsymsort || ofl->ofl_osdyntlssort) {
2272 			dyn->d_tag = DT_SUNW_SORTENT;
2273 			dyn->d_un.d_val = sizeof (Word);
2274 			dyn++;
2275 		}
2276 
2277 		if (ofl->ofl_osdynsymsort) {
2278 			shdr = ofl->ofl_osdynsymsort->os_shdr;
2279 
2280 			dyn->d_tag = DT_SUNW_SYMSORT;
2281 			dyn->d_un.d_ptr = shdr->sh_addr;
2282 			dyn++;
2283 
2284 			dyn->d_tag = DT_SUNW_SYMSORTSZ;
2285 			dyn->d_un.d_val = shdr->sh_size;
2286 			dyn++;
2287 		}
2288 
2289 		if (ofl->ofl_osdyntlssort) {
2290 			shdr = ofl->ofl_osdyntlssort->os_shdr;
2291 
2292 			dyn->d_tag = DT_SUNW_TLSSORT;
2293 			dyn->d_un.d_ptr = shdr->sh_addr;
2294 			dyn++;
2295 
2296 			dyn->d_tag = DT_SUNW_TLSSORTSZ;
2297 			dyn->d_un.d_val = shdr->sh_size;
2298 			dyn++;
2299 		}
2300 
2301 		/*
2302 		 * Reserve the DT_CHECKSUM entry.  Its value will be filled in
2303 		 * after the complete image is built.
2304 		 */
2305 		dyn->d_tag = DT_CHECKSUM;
2306 		ofl->ofl_checksum = &dyn->d_un.d_val;
2307 		dyn++;
2308 
2309 		/*
2310 		 * Versioning sections: DT_VERDEF and DT_VERNEED.
2311 		 *
2312 		 * The Solaris ld does not produce DT_VERSYM, but the GNU ld
2313 		 * does, in order to support their style of versioning, which
2314 		 * differs from ours:
2315 		 *
2316 		 *	- The top bit of the 16-bit Versym index is
2317 		 *		not part of the version, but is interpreted
2318 		 *		as a "hidden bit".
2319 		 *
2320 		 *	- External (SHN_UNDEF) symbols can have non-zero
2321 		 *		Versym values, which specify versions in
2322 		 *		referenced objects, via the Verneed section.
2323 		 *
2324 		 *	- The vna_other field of the Vernaux structures
2325 		 *		found in the Verneed section are not zero as
2326 		 *		with Solaris, but instead contain the version
2327 		 *		index to be used by Versym indices to reference
2328 		 *		the given external version.
2329 		 *
2330 		 * The Solaris ld, rtld, and elfdump programs all interpret the
2331 		 * presence of DT_VERSYM as meaning that GNU versioning rules
2332 		 * apply to the given file. If DT_VERSYM is not present,
2333 		 * then Solaris versioning rules apply. If we should ever need
2334 		 * to change our ld so that it does issue DT_VERSYM, then
2335 		 * this rule for detecting GNU versioning will no longer work.
2336 		 * In that case, we will have to invent a way to explicitly
2337 		 * specify the style of versioning in use, perhaps via a
2338 		 * new dynamic entry named something like DT_SUNW_VERSIONSTYLE,
2339 		 * where the d_un.d_val value specifies which style is to be
2340 		 * used.
2341 		 */
2342 		if ((flags & (FLG_OF_VERDEF | FLG_OF_NOVERSEC)) ==
2343 		    FLG_OF_VERDEF) {
2344 			shdr = ofl->ofl_osverdef->os_shdr;
2345 
2346 			dyn->d_tag = DT_VERDEF;
2347 			dyn->d_un.d_ptr = shdr->sh_addr;
2348 			dyn++;
2349 			dyn->d_tag = DT_VERDEFNUM;
2350 			dyn->d_un.d_ptr = shdr->sh_info;
2351 			dyn++;
2352 		}
2353 		if ((flags & (FLG_OF_VERNEED | FLG_OF_NOVERSEC)) ==
2354 		    FLG_OF_VERNEED) {
2355 			shdr = ofl->ofl_osverneed->os_shdr;
2356 
2357 			dyn->d_tag = DT_VERNEED;
2358 			dyn->d_un.d_ptr = shdr->sh_addr;
2359 			dyn++;
2360 			dyn->d_tag = DT_VERNEEDNUM;
2361 			dyn->d_un.d_ptr = shdr->sh_info;
2362 			dyn++;
2363 		}
2364 
2365 		if ((flags & FLG_OF_COMREL) && ofl->ofl_relocrelcnt) {
2366 			dyn->d_tag = ld_targ.t_m.m_rel_dt_count;
2367 			dyn->d_un.d_val = ofl->ofl_relocrelcnt;
2368 			dyn++;
2369 		}
2370 		if (flags & FLG_OF_TEXTREL) {
2371 			/*
2372 			 * Only the presence of this entry is used in this
2373 			 * implementation, not the value stored.
2374 			 */
2375 			dyn->d_tag = DT_TEXTREL;
2376 			dyn->d_un.d_val = 0;
2377 			dyn++;
2378 		}
2379 
2380 		if (ofl->ofl_osfiniarray) {
2381 			shdr = ofl->ofl_osfiniarray->os_shdr;
2382 
2383 			dyn->d_tag = DT_FINI_ARRAY;
2384 			dyn->d_un.d_ptr = shdr->sh_addr;
2385 			dyn++;
2386 
2387 			dyn->d_tag = DT_FINI_ARRAYSZ;
2388 			dyn->d_un.d_val = shdr->sh_size;
2389 			dyn++;
2390 		}
2391 
2392 		if (ofl->ofl_osinitarray) {
2393 			shdr = ofl->ofl_osinitarray->os_shdr;
2394 
2395 			dyn->d_tag = DT_INIT_ARRAY;
2396 			dyn->d_un.d_ptr = shdr->sh_addr;
2397 			dyn++;
2398 
2399 			dyn->d_tag = DT_INIT_ARRAYSZ;
2400 			dyn->d_un.d_val = shdr->sh_size;
2401 			dyn++;
2402 		}
2403 
2404 		if (ofl->ofl_ospreinitarray) {
2405 			shdr = ofl->ofl_ospreinitarray->os_shdr;
2406 
2407 			dyn->d_tag = DT_PREINIT_ARRAY;
2408 			dyn->d_un.d_ptr = shdr->sh_addr;
2409 			dyn++;
2410 
2411 			dyn->d_tag = DT_PREINIT_ARRAYSZ;
2412 			dyn->d_un.d_val = shdr->sh_size;
2413 			dyn++;
2414 		}
2415 
2416 		if (ofl->ofl_pltcnt) {
2417 			shdr = ofl->ofl_osplt->os_relosdesc->os_shdr;
2418 
2419 			dyn->d_tag = DT_PLTRELSZ;
2420 			dyn->d_un.d_ptr = shdr->sh_size;
2421 			dyn++;
2422 			dyn->d_tag = DT_PLTREL;
2423 			dyn->d_un.d_ptr = ld_targ.t_m.m_rel_dt_type;
2424 			dyn++;
2425 			dyn->d_tag = DT_JMPREL;
2426 			dyn->d_un.d_ptr = shdr->sh_addr;
2427 			dyn++;
2428 		}
2429 		if (ofl->ofl_pltpad) {
2430 			shdr = ofl->ofl_osplt->os_shdr;
2431 
2432 			dyn->d_tag = DT_PLTPAD;
2433 			if (ofl->ofl_pltcnt) {
2434 				dyn->d_un.d_ptr = shdr->sh_addr +
2435 				    ld_targ.t_m.m_plt_reservsz +
2436 				    ofl->ofl_pltcnt * ld_targ.t_m.m_plt_entsize;
2437 			} else
2438 				dyn->d_un.d_ptr = shdr->sh_addr;
2439 			dyn++;
2440 			dyn->d_tag = DT_PLTPADSZ;
2441 			dyn->d_un.d_val = ofl->ofl_pltpad *
2442 			    ld_targ.t_m.m_plt_entsize;
2443 			dyn++;
2444 		}
2445 		if (ofl->ofl_relocsz) {
2446 			shdr = ofl->ofl_osrelhead->os_shdr;
2447 
2448 			dyn->d_tag = ld_targ.t_m.m_rel_dt_type;
2449 			dyn->d_un.d_ptr = shdr->sh_addr;
2450 			dyn++;
2451 			dyn->d_tag = ld_targ.t_m.m_rel_dt_size;
2452 			dyn->d_un.d_ptr = ofl->ofl_relocsz;
2453 			dyn++;
2454 			dyn->d_tag = ld_targ.t_m.m_rel_dt_ent;
2455 			if (shdr->sh_type == SHT_REL)
2456 				dyn->d_un.d_ptr = sizeof (Rel);
2457 			else
2458 				dyn->d_un.d_ptr = sizeof (Rela);
2459 			dyn++;
2460 		}
2461 		if (ofl->ofl_ossyminfo) {
2462 			shdr = ofl->ofl_ossyminfo->os_shdr;
2463 
2464 			dyn->d_tag = DT_SYMINFO;
2465 			dyn->d_un.d_ptr = shdr->sh_addr;
2466 			dyn++;
2467 			dyn->d_tag = DT_SYMINSZ;
2468 			dyn->d_un.d_val = shdr->sh_size;
2469 			dyn++;
2470 			dyn->d_tag = DT_SYMINENT;
2471 			dyn->d_un.d_val = sizeof (Syminfo);
2472 			dyn++;
2473 		}
2474 		if (ofl->ofl_osmove) {
2475 			shdr = ofl->ofl_osmove->os_shdr;
2476 
2477 			dyn->d_tag = DT_MOVETAB;
2478 			dyn->d_un.d_val = shdr->sh_addr;
2479 			dyn++;
2480 			dyn->d_tag = DT_MOVESZ;
2481 			dyn->d_un.d_val = shdr->sh_size;
2482 			dyn++;
2483 			dyn->d_tag = DT_MOVEENT;
2484 			dyn->d_un.d_val = shdr->sh_entsize;
2485 			dyn++;
2486 		}
2487 		if (ofl->ofl_regsymcnt) {
2488 			int	ndx;
2489 
2490 			for (ndx = 0; ndx < ofl->ofl_regsymsno; ndx++) {
2491 				if ((sdp = ofl->ofl_regsyms[ndx]) == NULL)
2492 					continue;
2493 
2494 				dyn->d_tag = ld_targ.t_m.m_dt_register;
2495 				dyn->d_un.d_val = sdp->sd_symndx;
2496 				dyn++;
2497 			}
2498 		}
2499 
2500 		for (APLIST_TRAVERSE(ofl->ofl_rtldinfo, idx, sdp)) {
2501 			dyn->d_tag = DT_SUNW_RTLDINF;
2502 			dyn->d_un.d_ptr = sdp->sd_sym->st_value;
2503 			dyn++;
2504 		}
2505 
2506 		if (((sgp = ofl->ofl_osdynamic->os_sgdesc) != NULL) &&
2507 		    (sgp->sg_phdr.p_flags & PF_W) && ofl->ofl_osinterp) {
2508 			dyn->d_tag = DT_DEBUG;
2509 			dyn->d_un.d_ptr = 0;
2510 			dyn++;
2511 		}
2512 
2513 		if (ofl->ofl_oscap) {
2514 			dyn->d_tag = DT_SUNW_CAP;
2515 			dyn->d_un.d_val = ofl->ofl_oscap->os_shdr->sh_addr;
2516 			dyn++;
2517 		}
2518 		if (ofl->ofl_oscapinfo) {
2519 			dyn->d_tag = DT_SUNW_CAPINFO;
2520 			dyn->d_un.d_val = ofl->ofl_oscapinfo->os_shdr->sh_addr;
2521 			dyn++;
2522 		}
2523 		if (ofl->ofl_oscapchain) {
2524 			shdr = ofl->ofl_oscapchain->os_shdr;
2525 
2526 			dyn->d_tag = DT_SUNW_CAPCHAIN;
2527 			dyn->d_un.d_val = shdr->sh_addr;
2528 			dyn++;
2529 			dyn->d_tag = DT_SUNW_CAPCHAINSZ;
2530 			dyn->d_un.d_val = shdr->sh_size;
2531 			dyn++;
2532 			dyn->d_tag = DT_SUNW_CAPCHAINENT;
2533 			dyn->d_un.d_val = shdr->sh_entsize;
2534 			dyn++;
2535 		}
2536 		if (flags & FLG_OF_SYMBOLIC) {
2537 			dyn->d_tag = DT_SYMBOLIC;
2538 			dyn->d_un.d_val = 0;
2539 			dyn++;
2540 		}
2541 	}
2542 
2543 	dyn->d_tag = DT_FLAGS;
2544 	dyn->d_un.d_val = ofl->ofl_dtflags;
2545 	dyn++;
2546 
2547 	/*
2548 	 * If -Bdirect was specified, but some NODIRECT symbols were specified
2549 	 * via a mapfile, or -znodirect was used on the command line, then
2550 	 * clear the DF_1_DIRECT flag.  The resultant object will use per-symbol
2551 	 * direct bindings rather than be enabled for global direct bindings.
2552 	 *
2553 	 * If any no-direct bindings exist within this object, set the
2554 	 * DF_1_NODIRECT flag.  ld(1) recognizes this flag when processing
2555 	 * dependencies, and performs extra work to ensure that no direct
2556 	 * bindings are established to the no-direct symbols that exist
2557 	 * within these dependencies.
2558 	 */
2559 	if (ofl->ofl_flags1 & FLG_OF1_NGLBDIR)
2560 		ofl->ofl_dtflags_1 &= ~DF_1_DIRECT;
2561 	if (ofl->ofl_flags1 & FLG_OF1_NDIRECT)
2562 		ofl->ofl_dtflags_1 |= DF_1_NODIRECT;
2563 
2564 	dyn->d_tag = DT_FLAGS_1;
2565 	dyn->d_un.d_val = ofl->ofl_dtflags_1;
2566 	dyn++;
2567 
2568 	dyn->d_tag = DT_SUNW_STRPAD;
2569 	dyn->d_un.d_val = DYNSTR_EXTRA_PAD;
2570 	dyn++;
2571 
2572 	dyn->d_tag = DT_SUNW_LDMACH;
2573 	dyn->d_un.d_val = ld_sunw_ldmach();
2574 	dyn++;
2575 
2576 	(*ld_targ.t_mr.mr_mach_update_odynamic)(ofl, &dyn);
2577 
2578 	for (cnt = 1 + DYNAMIC_EXTRA_ELTS; cnt--; dyn++) {
2579 		dyn->d_tag = DT_NULL;
2580 		dyn->d_un.d_val = 0;
2581 	}
2582 
2583 	/*
2584 	 * Ensure that we wrote the right number of entries. If not, we either
2585 	 * miscounted in make_dynamic(), or we did something wrong in this
2586 	 * function.
2587 	 */
2588 	assert((ofl->ofl_osdynamic->os_shdr->sh_size /
2589 	    ofl->ofl_osdynamic->os_shdr->sh_entsize) ==
2590 	    ((uintptr_t)dyn - (uintptr_t)_dyn) / sizeof (*dyn));
2591 
2592 	return (1);
2593 }
2594 
2595 /*
2596  * Build the version definition section
2597  */
2598 static int
2599 update_overdef(Ofl_desc *ofl)
2600 {
2601 	Aliste		idx1;
2602 	Ver_desc	*vdp, *_vdp;
2603 	Verdef		*vdf, *_vdf;
2604 	int		num = 0;
2605 	Os_desc		*strosp;
2606 	Str_tbl		*strtbl;
2607 
2608 	/*
2609 	 * Determine which string table to use.
2610 	 */
2611 	if (OFL_IS_STATIC_OBJ(ofl)) {
2612 		strtbl = ofl->ofl_strtab;
2613 		strosp = ofl->ofl_osstrtab;
2614 	} else {
2615 		strtbl = ofl->ofl_dynstrtab;
2616 		strosp = ofl->ofl_osdynstr;
2617 	}
2618 
2619 	/*
2620 	 * Traverse the version descriptors and update the version structures
2621 	 * to point to the dynstr name in preparation for building the version
2622 	 * section structure.
2623 	 */
2624 	for (APLIST_TRAVERSE(ofl->ofl_verdesc, idx1, vdp)) {
2625 		Sym_desc	*sdp;
2626 
2627 		if (vdp->vd_flags & VER_FLG_BASE) {
2628 			const char	*name = vdp->vd_name;
2629 			size_t		stoff;
2630 
2631 			/*
2632 			 * Create a new string table entry to represent the base
2633 			 * version name (there is no corresponding symbol for
2634 			 * this).
2635 			 */
2636 			(void) st_setstring(strtbl, name, &stoff);
2637 			/* LINTED */
2638 			vdp->vd_name = (const char *)stoff;
2639 		} else {
2640 			sdp = ld_sym_find(vdp->vd_name, vdp->vd_hash, 0, ofl);
2641 			/* LINTED */
2642 			vdp->vd_name = (const char *)
2643 			    (uintptr_t)sdp->sd_sym->st_name;
2644 		}
2645 	}
2646 
2647 	_vdf = vdf = (Verdef *)ofl->ofl_osverdef->os_outdata->d_buf;
2648 
2649 	/*
2650 	 * Traverse the version descriptors and update the version section to
2651 	 * reflect each version and its associated dependencies.
2652 	 */
2653 	for (APLIST_TRAVERSE(ofl->ofl_verdesc, idx1, vdp)) {
2654 		Aliste		idx2;
2655 		Half		cnt = 1;
2656 		Verdaux		*vdap, *_vdap;
2657 
2658 		_vdap = vdap = (Verdaux *)(vdf + 1);
2659 
2660 		vdf->vd_version = VER_DEF_CURRENT;
2661 		vdf->vd_flags	= vdp->vd_flags & MSK_VER_USER;
2662 		vdf->vd_ndx	= vdp->vd_ndx;
2663 		vdf->vd_hash	= vdp->vd_hash;
2664 
2665 		/* LINTED */
2666 		vdap->vda_name = (uintptr_t)vdp->vd_name;
2667 		vdap++;
2668 		/* LINTED */
2669 		_vdap->vda_next = (Word)((uintptr_t)vdap - (uintptr_t)_vdap);
2670 
2671 		/*
2672 		 * Traverse this versions dependency list generating the
2673 		 * appropriate version dependency entries.
2674 		 */
2675 		for (APLIST_TRAVERSE(vdp->vd_deps, idx2, _vdp)) {
2676 			/* LINTED */
2677 			vdap->vda_name = (uintptr_t)_vdp->vd_name;
2678 			_vdap = vdap;
2679 			vdap++, cnt++;
2680 			/* LINTED */
2681 			_vdap->vda_next = (Word)((uintptr_t)vdap -
2682 			    (uintptr_t)_vdap);
2683 		}
2684 		_vdap->vda_next = 0;
2685 
2686 		/*
2687 		 * Record the versions auxiliary array offset and the associated
2688 		 * dependency count.
2689 		 */
2690 		/* LINTED */
2691 		vdf->vd_aux = (Word)((uintptr_t)(vdf + 1) - (uintptr_t)vdf);
2692 		vdf->vd_cnt = cnt;
2693 
2694 		/*
2695 		 * Record the next versions offset and update the version
2696 		 * pointer.  Remember the previous version offset as the very
2697 		 * last structures next pointer should be null.
2698 		 */
2699 		_vdf = vdf;
2700 		vdf = (Verdef *)vdap, num++;
2701 		/* LINTED */
2702 		_vdf->vd_next = (Word)((uintptr_t)vdf - (uintptr_t)_vdf);
2703 	}
2704 	_vdf->vd_next = 0;
2705 
2706 	/*
2707 	 * Record the string table association with the version definition
2708 	 * section, and the symbol table associated with the version symbol
2709 	 * table (the actual contents of the version symbol table are filled
2710 	 * in during symbol update).
2711 	 */
2712 	/* LINTED */
2713 	ofl->ofl_osverdef->os_shdr->sh_link = (Word)elf_ndxscn(strosp->os_scn);
2714 
2715 	/*
2716 	 * The version definition sections `info' field is used to indicate the
2717 	 * number of entries in this section.
2718 	 */
2719 	ofl->ofl_osverdef->os_shdr->sh_info = num;
2720 
2721 	return (1);
2722 }
2723 
2724 /*
2725  * Finish the version symbol index section
2726  */
2727 static void
2728 update_oversym(Ofl_desc *ofl)
2729 {
2730 	Os_desc		*osp;
2731 
2732 	/*
2733 	 * Record the symbol table associated with the version symbol table.
2734 	 * The contents of the version symbol table are filled in during
2735 	 * symbol update.
2736 	 */
2737 	if (OFL_IS_STATIC_OBJ(ofl))
2738 		osp = ofl->ofl_ossymtab;
2739 	else
2740 		osp = ofl->ofl_osdynsym;
2741 
2742 	/* LINTED */
2743 	ofl->ofl_osversym->os_shdr->sh_link = (Word)elf_ndxscn(osp->os_scn);
2744 }
2745 
2746 /*
2747  * Build the version needed section
2748  */
2749 static int
2750 update_overneed(Ofl_desc *ofl)
2751 {
2752 	Aliste		idx1;
2753 	Ifl_desc	*ifl;
2754 	Verneed		*vnd, *_vnd;
2755 	Os_desc		*strosp;
2756 	Str_tbl		*strtbl;
2757 	Word		num = 0;
2758 
2759 	_vnd = vnd = (Verneed *)ofl->ofl_osverneed->os_outdata->d_buf;
2760 
2761 	/*
2762 	 * Determine which string table is appropriate.
2763 	 */
2764 	if (OFL_IS_STATIC_OBJ(ofl)) {
2765 		strosp = ofl->ofl_osstrtab;
2766 		strtbl = ofl->ofl_strtab;
2767 	} else {
2768 		strosp = ofl->ofl_osdynstr;
2769 		strtbl = ofl->ofl_dynstrtab;
2770 	}
2771 
2772 	/*
2773 	 * Traverse the shared object list looking for dependencies that have
2774 	 * versions defined within them.
2775 	 */
2776 	for (APLIST_TRAVERSE(ofl->ofl_sos, idx1, ifl)) {
2777 		Half		_cnt;
2778 		Word		cnt = 0;
2779 		Vernaux		*_vnap, *vnap;
2780 		size_t		stoff;
2781 
2782 		if (!(ifl->ifl_flags & FLG_IF_VERNEED))
2783 			continue;
2784 
2785 		vnd->vn_version = VER_NEED_CURRENT;
2786 
2787 		(void) st_setstring(strtbl, ifl->ifl_soname, &stoff);
2788 		vnd->vn_file = stoff;
2789 
2790 		_vnap = vnap = (Vernaux *)(vnd + 1);
2791 
2792 		/*
2793 		 * Traverse the version index list recording
2794 		 * each version as a needed dependency.
2795 		 */
2796 		for (_cnt = 0; _cnt <= ifl->ifl_vercnt; _cnt++) {
2797 			Ver_index	*vip = &ifl->ifl_verndx[_cnt];
2798 
2799 			if (vip->vi_flags & FLG_VER_REFER) {
2800 				(void) st_setstring(strtbl, vip->vi_name,
2801 				    &stoff);
2802 				vnap->vna_name = stoff;
2803 
2804 				if (vip->vi_desc) {
2805 					vnap->vna_hash = vip->vi_desc->vd_hash;
2806 					vnap->vna_flags =
2807 					    vip->vi_desc->vd_flags;
2808 				} else {
2809 					vnap->vna_hash = 0;
2810 					vnap->vna_flags = 0;
2811 				}
2812 				vnap->vna_other = vip->vi_overndx;
2813 
2814 				/*
2815 				 * If version A inherits version B, then
2816 				 * B is implicit in A. It suffices for ld.so.1
2817 				 * to verify A at runtime and skip B. The
2818 				 * version normalization process sets the INFO
2819 				 * flag for the versions we want ld.so.1 to
2820 				 * skip.
2821 				 */
2822 				if (vip->vi_flags & VER_FLG_INFO)
2823 					vnap->vna_flags |= VER_FLG_INFO;
2824 
2825 				_vnap = vnap;
2826 				vnap++, cnt++;
2827 				_vnap->vna_next =
2828 				    /* LINTED */
2829 				    (Word)((uintptr_t)vnap - (uintptr_t)_vnap);
2830 			}
2831 		}
2832 
2833 		_vnap->vna_next = 0;
2834 
2835 		/*
2836 		 * Record the versions auxiliary array offset and
2837 		 * the associated dependency count.
2838 		 */
2839 		/* LINTED */
2840 		vnd->vn_aux = (Word)((uintptr_t)(vnd + 1) - (uintptr_t)vnd);
2841 		/* LINTED */
2842 		vnd->vn_cnt = (Half)cnt;
2843 
2844 		/*
2845 		 * Record the next versions offset and update the version
2846 		 * pointer.  Remember the previous version offset as the very
2847 		 * last structures next pointer should be null.
2848 		 */
2849 		_vnd = vnd;
2850 		vnd = (Verneed *)vnap, num++;
2851 		/* LINTED */
2852 		_vnd->vn_next = (Word)((uintptr_t)vnd - (uintptr_t)_vnd);
2853 	}
2854 	_vnd->vn_next = 0;
2855 
2856 	/*
2857 	 * Use sh_link to record the associated string table section, and
2858 	 * sh_info to indicate the number of entries contained in the section.
2859 	 */
2860 	/* LINTED */
2861 	ofl->ofl_osverneed->os_shdr->sh_link = (Word)elf_ndxscn(strosp->os_scn);
2862 	ofl->ofl_osverneed->os_shdr->sh_info = num;
2863 
2864 	return (1);
2865 }
2866 
2867 /*
2868  * Update syminfo section.
2869  */
2870 static uintptr_t
2871 update_osyminfo(Ofl_desc *ofl)
2872 {
2873 	Os_desc		*symosp, *infosp = ofl->ofl_ossyminfo;
2874 	Syminfo		*sip = infosp->os_outdata->d_buf;
2875 	Shdr		*shdr = infosp->os_shdr;
2876 	char		*strtab;
2877 	Aliste		idx;
2878 	Sym_desc	*sdp;
2879 	Sfltr_desc	*sftp;
2880 
2881 	if (ofl->ofl_flags & FLG_OF_RELOBJ) {
2882 		symosp = ofl->ofl_ossymtab;
2883 		strtab = ofl->ofl_osstrtab->os_outdata->d_buf;
2884 	} else {
2885 		symosp = ofl->ofl_osdynsym;
2886 		strtab = ofl->ofl_osdynstr->os_outdata->d_buf;
2887 	}
2888 
2889 	/* LINTED */
2890 	infosp->os_shdr->sh_link = (Word)elf_ndxscn(symosp->os_scn);
2891 	if (ofl->ofl_osdynamic)
2892 		infosp->os_shdr->sh_info =
2893 		    /* LINTED */
2894 		    (Word)elf_ndxscn(ofl->ofl_osdynamic->os_scn);
2895 
2896 	/*
2897 	 * Update any references with the index into the dynamic table.
2898 	 */
2899 	for (APLIST_TRAVERSE(ofl->ofl_symdtent, idx, sdp))
2900 		sip[sdp->sd_symndx].si_boundto = sdp->sd_file->ifl_neededndx;
2901 
2902 	/*
2903 	 * Update any filtee references with the index into the dynamic table.
2904 	 */
2905 	for (ALIST_TRAVERSE(ofl->ofl_symfltrs, idx, sftp)) {
2906 		Dfltr_desc	*dftp;
2907 
2908 		dftp = alist_item(ofl->ofl_dtsfltrs, sftp->sft_idx);
2909 		sip[sftp->sft_sdp->sd_symndx].si_boundto = dftp->dft_ndx;
2910 	}
2911 
2912 	/*
2913 	 * Display debugging information about section.
2914 	 */
2915 	DBG_CALL(Dbg_syminfo_title(ofl->ofl_lml));
2916 	if (DBG_ENABLED) {
2917 		Word	_cnt, cnt = shdr->sh_size / shdr->sh_entsize;
2918 		Sym	*symtab = symosp->os_outdata->d_buf;
2919 		Dyn	*dyn;
2920 
2921 		if (ofl->ofl_osdynamic)
2922 			dyn = ofl->ofl_osdynamic->os_outdata->d_buf;
2923 		else
2924 			dyn = NULL;
2925 
2926 		for (_cnt = 1; _cnt < cnt; _cnt++) {
2927 			if (sip[_cnt].si_flags || sip[_cnt].si_boundto)
2928 				/* LINTED */
2929 				DBG_CALL(Dbg_syminfo_entry(ofl->ofl_lml, _cnt,
2930 				    &sip[_cnt], &symtab[_cnt], strtab, dyn));
2931 		}
2932 	}
2933 	return (1);
2934 }
2935 
2936 /*
2937  * Build the output elf header.
2938  */
2939 static uintptr_t
2940 update_oehdr(Ofl_desc * ofl)
2941 {
2942 	Ehdr	*ehdr = ofl->ofl_nehdr;
2943 
2944 	/*
2945 	 * If an entry point symbol has already been established (refer
2946 	 * sym_validate()) simply update the elf header entry point with the
2947 	 * symbols value.  If no entry point is defined it will have been filled
2948 	 * with the start address of the first section within the text segment
2949 	 * (refer update_outfile()).
2950 	 */
2951 	if (ofl->ofl_entry)
2952 		ehdr->e_entry =
2953 		    ((Sym_desc *)(ofl->ofl_entry))->sd_sym->st_value;
2954 
2955 	ehdr->e_ident[EI_DATA] = ld_targ.t_m.m_data;
2956 	ehdr->e_version = ofl->ofl_dehdr->e_version;
2957 
2958 	/*
2959 	 * When generating a relocatable object under -z symbolcap, set the
2960 	 * e_machine to be generic, and remove any e_flags.  Input relocatable
2961 	 * objects may identify alternative e_machine (m.machplus) and e_flags
2962 	 * values.  However, the functions within the created output object
2963 	 * are selected at runtime using the capabilities mechanism, which
2964 	 * supersedes the e-machine and e_flags information.  Therefore,
2965 	 * e_machine and e_flag values are not propagated to the output object,
2966 	 * as these values might prevent the kernel from loading the object
2967 	 * before the runtime linker gets control.
2968 	 */
2969 	if (ofl->ofl_flags & FLG_OF_OTOSCAP) {
2970 		ehdr->e_machine = ld_targ.t_m.m_mach;
2971 		ehdr->e_flags = 0;
2972 	} else {
2973 		/*
2974 		 * Note. it may be necessary to update the e_flags field in the
2975 		 * machine dependent section.
2976 		 */
2977 		ehdr->e_machine = ofl->ofl_dehdr->e_machine;
2978 		ehdr->e_flags = ofl->ofl_dehdr->e_flags;
2979 
2980 		if (ehdr->e_machine != ld_targ.t_m.m_mach) {
2981 			if (ehdr->e_machine != ld_targ.t_m.m_machplus)
2982 				return (S_ERROR);
2983 			if ((ehdr->e_flags & ld_targ.t_m.m_flagsplus) == 0)
2984 				return (S_ERROR);
2985 		}
2986 	}
2987 
2988 	if (ofl->ofl_flags & FLG_OF_SHAROBJ)
2989 		ehdr->e_type = ET_DYN;
2990 	else if (ofl->ofl_flags & FLG_OF_RELOBJ)
2991 		ehdr->e_type = ET_REL;
2992 	else
2993 		ehdr->e_type = ET_EXEC;
2994 
2995 	return (1);
2996 }
2997 
2998 /*
2999  * Perform move table expansion.
3000  */
3001 static void
3002 expand_move(Ofl_desc *ofl, Sym_desc *sdp, Move *mvp)
3003 {
3004 	Os_desc		*osp;
3005 	uchar_t		*taddr, *taddr0;
3006 	Sxword		offset;
3007 	Half		cnt;
3008 	uint_t		stride;
3009 
3010 	osp = ofl->ofl_isparexpn->is_osdesc;
3011 	offset = sdp->sd_sym->st_value - osp->os_shdr->sh_addr;
3012 
3013 	taddr0 = taddr = osp->os_outdata->d_buf;
3014 	taddr += offset;
3015 	taddr = taddr + mvp->m_poffset;
3016 
3017 	for (cnt = 0; cnt < mvp->m_repeat; cnt++) {
3018 		/* LINTED */
3019 		DBG_CALL(Dbg_move_expand(ofl->ofl_lml, mvp,
3020 		    (Addr)(taddr - taddr0)));
3021 		stride = (uint_t)mvp->m_stride + 1;
3022 
3023 		/*
3024 		 * Update the target address based upon the move entry size.
3025 		 * This size was validated in ld_process_move().
3026 		 */
3027 		/* LINTED */
3028 		switch (ELF_M_SIZE(mvp->m_info)) {
3029 		case 1:
3030 			/* LINTED */
3031 			*taddr = (uchar_t)mvp->m_value;
3032 			taddr += stride;
3033 			break;
3034 		case 2:
3035 			/* LINTED */
3036 			*((Half *)taddr) = (Half)mvp->m_value;
3037 			taddr += 2 * stride;
3038 			break;
3039 		case 4:
3040 			/* LINTED */
3041 			*((Word *)taddr) = (Word)mvp->m_value;
3042 			taddr += 4 * stride;
3043 			break;
3044 		case 8:
3045 			/* LINTED */
3046 			*((u_longlong_t *)taddr) = mvp->m_value;
3047 			taddr += 8 * stride;
3048 			break;
3049 		}
3050 	}
3051 }
3052 
3053 /*
3054  * Update Move sections.
3055  */
3056 static void
3057 update_move(Ofl_desc *ofl)
3058 {
3059 	Word		ndx = 0;
3060 	ofl_flag_t	flags = ofl->ofl_flags;
3061 	Move		*omvp;
3062 	Aliste		idx1;
3063 	Sym_desc	*sdp;
3064 
3065 	/*
3066 	 * Determine the index of the symbol table that will be referenced by
3067 	 * the Move section.
3068 	 */
3069 	if (OFL_ALLOW_DYNSYM(ofl))
3070 		/* LINTED */
3071 		ndx = (Word) elf_ndxscn(ofl->ofl_osdynsym->os_scn);
3072 	else if (!(flags & FLG_OF_STRIP) || (flags & FLG_OF_RELOBJ))
3073 		/* LINTED */
3074 		ndx = (Word) elf_ndxscn(ofl->ofl_ossymtab->os_scn);
3075 
3076 	/*
3077 	 * Update sh_link of the Move section, and point to the new Move data.
3078 	 */
3079 	if (ofl->ofl_osmove) {
3080 		ofl->ofl_osmove->os_shdr->sh_link = ndx;
3081 		omvp = (Move *)ofl->ofl_osmove->os_outdata->d_buf;
3082 	}
3083 
3084 	/*
3085 	 * Update symbol entry index
3086 	 */
3087 	for (APLIST_TRAVERSE(ofl->ofl_parsyms, idx1, sdp)) {
3088 		Aliste		idx2;
3089 		Mv_desc		*mdp;
3090 
3091 		/*
3092 		 * Expand move table
3093 		 */
3094 		if (sdp->sd_flags & FLG_SY_PAREXPN) {
3095 			const char	*str;
3096 
3097 			if (flags & FLG_OF_STATIC)
3098 				str = MSG_INTL(MSG_PSYM_EXPREASON1);
3099 			else if (ofl->ofl_flags1 & FLG_OF1_NOPARTI)
3100 				str = MSG_INTL(MSG_PSYM_EXPREASON2);
3101 			else
3102 				str = MSG_INTL(MSG_PSYM_EXPREASON3);
3103 
3104 			DBG_CALL(Dbg_move_parexpn(ofl->ofl_lml,
3105 			    sdp->sd_name, str));
3106 
3107 			for (ALIST_TRAVERSE(sdp->sd_move, idx2, mdp)) {
3108 				DBG_CALL(Dbg_move_entry1(ofl->ofl_lml, 0,
3109 				    mdp->md_move, sdp));
3110 				expand_move(ofl, sdp, mdp->md_move);
3111 			}
3112 			continue;
3113 		}
3114 
3115 		/*
3116 		 * Process move table
3117 		 */
3118 		DBG_CALL(Dbg_move_outmove(ofl->ofl_lml, sdp->sd_name));
3119 
3120 		for (ALIST_TRAVERSE(sdp->sd_move, idx2, mdp)) {
3121 			Move	*imvp;
3122 			int	idx = 1;
3123 			Sym	*sym;
3124 
3125 			imvp = mdp->md_move;
3126 			sym = sdp->sd_sym;
3127 
3128 			DBG_CALL(Dbg_move_entry1(ofl->ofl_lml, 1, imvp, sdp));
3129 
3130 			*omvp = *imvp;
3131 			if ((flags & FLG_OF_RELOBJ) == 0) {
3132 				if (ELF_ST_BIND(sym->st_info) == STB_LOCAL) {
3133 					Os_desc	*osp = sdp->sd_isc->is_osdesc;
3134 					Word	ndx = osp->os_identndx;
3135 
3136 					omvp->m_info =
3137 					    /* LINTED */
3138 					    ELF_M_INFO(ndx, imvp->m_info);
3139 
3140 					if (ELF_ST_TYPE(sym->st_info) !=
3141 					    STT_SECTION) {
3142 						omvp->m_poffset =
3143 						    sym->st_value -
3144 						    osp->os_shdr->sh_addr +
3145 						    imvp->m_poffset;
3146 					}
3147 				} else {
3148 					omvp->m_info =
3149 					    /* LINTED */
3150 					    ELF_M_INFO(sdp->sd_symndx,
3151 					    imvp->m_info);
3152 				}
3153 			} else {
3154 				Boolean 	isredloc = FALSE;
3155 
3156 				if ((ELF_ST_BIND(sym->st_info) == STB_LOCAL) &&
3157 				    (ofl->ofl_flags & FLG_OF_REDLSYM))
3158 					isredloc = TRUE;
3159 
3160 				if (isredloc && !(sdp->sd_move)) {
3161 					Os_desc	*osp = sdp->sd_isc->is_osdesc;
3162 					Word	ndx = osp->os_identndx;
3163 
3164 					omvp->m_info =
3165 					    /* LINTED */
3166 					    ELF_M_INFO(ndx, imvp->m_info);
3167 
3168 					omvp->m_poffset += sym->st_value;
3169 				} else {
3170 					if (isredloc)
3171 						DBG_CALL(Dbg_syms_reduce(ofl,
3172 						    DBG_SYM_REDUCE_RETAIN,
3173 						    sdp, idx,
3174 						    ofl->ofl_osmove->os_name));
3175 
3176 					omvp->m_info =
3177 					    /* LINTED */
3178 					    ELF_M_INFO(sdp->sd_symndx,
3179 					    imvp->m_info);
3180 				}
3181 			}
3182 
3183 			DBG_CALL(Dbg_move_entry1(ofl->ofl_lml, 0, omvp, sdp));
3184 			omvp++;
3185 			idx++;
3186 		}
3187 	}
3188 }
3189 
3190 /*
3191  * Scan through the SHT_GROUP output sections.  Update their sh_link/sh_info
3192  * fields as well as the section contents.
3193  */
3194 static uintptr_t
3195 update_ogroup(Ofl_desc *ofl)
3196 {
3197 	Aliste		idx;
3198 	Os_desc		*osp;
3199 	uintptr_t	error = 0;
3200 
3201 	for (APLIST_TRAVERSE(ofl->ofl_osgroups, idx, osp)) {
3202 		Is_desc		*isp;
3203 		Ifl_desc	*ifl;
3204 		Shdr		*shdr = osp->os_shdr;
3205 		Sym_desc	*sdp;
3206 		Xword		i, grpcnt;
3207 		Word		*gdata;
3208 
3209 		/*
3210 		 * Since input GROUP sections always create unique
3211 		 * output GROUP sections - we know there is only one
3212 		 * item on the list.
3213 		 */
3214 		isp = ld_os_first_isdesc(osp);
3215 
3216 		ifl = isp->is_file;
3217 		sdp = ifl->ifl_oldndx[isp->is_shdr->sh_info];
3218 		shdr->sh_link = (Word)elf_ndxscn(ofl->ofl_ossymtab->os_scn);
3219 		shdr->sh_info = sdp->sd_symndx;
3220 
3221 		/*
3222 		 * Scan through the group data section and update
3223 		 * all of the links to new values.
3224 		 */
3225 		grpcnt = shdr->sh_size / shdr->sh_entsize;
3226 		gdata = (Word *)osp->os_outdata->d_buf;
3227 
3228 		for (i = 1; i < grpcnt; i++) {
3229 			Os_desc	*_osp;
3230 			Is_desc	*_isp = ifl->ifl_isdesc[gdata[i]];
3231 
3232 			/*
3233 			 * If the referenced section didn't make it to the
3234 			 * output file - just zero out the entry.
3235 			 */
3236 			if ((_osp = _isp->is_osdesc) == NULL)
3237 				gdata[i] = 0;
3238 			else
3239 				gdata[i] = (Word)elf_ndxscn(_osp->os_scn);
3240 		}
3241 	}
3242 	return (error);
3243 }
3244 
3245 static void
3246 update_ostrtab(Os_desc *osp, Str_tbl *stp, uint_t extra)
3247 {
3248 	Elf_Data	*data;
3249 
3250 	if (osp == NULL)
3251 		return;
3252 
3253 	data = osp->os_outdata;
3254 	assert(data->d_size == (st_getstrtab_sz(stp) + extra));
3255 	(void) st_setstrbuf(stp, data->d_buf, data->d_size - extra);
3256 	/* If leaving an extra hole at the end, zero it */
3257 	if (extra > 0)
3258 		(void) memset((char *)data->d_buf + data->d_size - extra,
3259 		    0x0, extra);
3260 }
3261 
3262 /*
3263  * Update capabilities information.
3264  *
3265  * If string table capabilities exist, then the associated string must be
3266  * translated into an offset into the string table.
3267  */
3268 static void
3269 update_oscap(Ofl_desc *ofl)
3270 {
3271 	Os_desc		*strosp, *cosp;
3272 	Cap		*cap;
3273 	Str_tbl		*strtbl;
3274 	Capstr		*capstr;
3275 	size_t		stoff;
3276 	Aliste		idx1;
3277 
3278 	/*
3279 	 * Determine which symbol table or string table is appropriate.
3280 	 */
3281 	if (OFL_IS_STATIC_OBJ(ofl)) {
3282 		strosp = ofl->ofl_osstrtab;
3283 		strtbl = ofl->ofl_strtab;
3284 	} else {
3285 		strosp = ofl->ofl_osdynstr;
3286 		strtbl = ofl->ofl_dynstrtab;
3287 	}
3288 
3289 	/*
3290 	 * If symbol capabilities exist, set the sh_link field of the .SUNW_cap
3291 	 * section to the .SUNW_capinfo section.
3292 	 */
3293 	if (ofl->ofl_oscapinfo) {
3294 		cosp = ofl->ofl_oscap;
3295 		cosp->os_shdr->sh_link =
3296 		    (Word)elf_ndxscn(ofl->ofl_oscapinfo->os_scn);
3297 	}
3298 
3299 	/*
3300 	 * If there are capability strings to process, set the sh_info
3301 	 * field of the .SUNW_cap section to the associated string table, and
3302 	 * proceed to process any CA_SUNW_PLAT entries.
3303 	 */
3304 	if ((ofl->ofl_flags & FLG_OF_CAPSTRS) == 0)
3305 		return;
3306 
3307 	cosp = ofl->ofl_oscap;
3308 	cosp->os_shdr->sh_info = (Word)elf_ndxscn(strosp->os_scn);
3309 
3310 	cap = ofl->ofl_oscap->os_outdata->d_buf;
3311 
3312 	/*
3313 	 * Determine whether an object capability identifier, or object
3314 	 * machine/platform capabilities exists.
3315 	 */
3316 	capstr = &ofl->ofl_ocapset.oc_id;
3317 	if (capstr->cs_str) {
3318 		(void) st_setstring(strtbl, capstr->cs_str, &stoff);
3319 		cap[capstr->cs_ndx].c_un.c_ptr = stoff;
3320 	}
3321 	for (ALIST_TRAVERSE(ofl->ofl_ocapset.oc_plat.cl_val, idx1, capstr)) {
3322 		(void) st_setstring(strtbl, capstr->cs_str, &stoff);
3323 		cap[capstr->cs_ndx].c_un.c_ptr = stoff;
3324 	}
3325 	for (ALIST_TRAVERSE(ofl->ofl_ocapset.oc_mach.cl_val, idx1, capstr)) {
3326 		(void) st_setstring(strtbl, capstr->cs_str, &stoff);
3327 		cap[capstr->cs_ndx].c_un.c_ptr = stoff;
3328 	}
3329 
3330 	/*
3331 	 * Determine any symbol capability identifiers, or machine/platform
3332 	 * capabilities.
3333 	 */
3334 	if (ofl->ofl_capgroups) {
3335 		Cap_group	*cgp;
3336 
3337 		for (APLIST_TRAVERSE(ofl->ofl_capgroups, idx1, cgp)) {
3338 			Objcapset	*ocapset = &cgp->cg_set;
3339 			Aliste		idx2;
3340 
3341 			capstr = &ocapset->oc_id;
3342 			if (capstr->cs_str) {
3343 				(void) st_setstring(strtbl, capstr->cs_str,
3344 				    &stoff);
3345 				cap[capstr->cs_ndx].c_un.c_ptr = stoff;
3346 			}
3347 			for (ALIST_TRAVERSE(ocapset->oc_plat.cl_val, idx2,
3348 			    capstr)) {
3349 				(void) st_setstring(strtbl, capstr->cs_str,
3350 				    &stoff);
3351 				cap[capstr->cs_ndx].c_un.c_ptr = stoff;
3352 			}
3353 			for (ALIST_TRAVERSE(ocapset->oc_mach.cl_val, idx2,
3354 			    capstr)) {
3355 				(void) st_setstring(strtbl, capstr->cs_str,
3356 				    &stoff);
3357 				cap[capstr->cs_ndx].c_un.c_ptr = stoff;
3358 			}
3359 		}
3360 	}
3361 }
3362 
3363 /*
3364  * Update the .SUNW_capinfo, and possibly the .SUNW_capchain sections.
3365  */
3366 static void
3367 update_oscapinfo(Ofl_desc *ofl)
3368 {
3369 	Os_desc		*symosp, *ciosp, *ccosp = NULL;
3370 	Capinfo		*ocapinfo;
3371 	Capchain	*ocapchain;
3372 	Cap_avlnode	*cav;
3373 	Word		chainndx = 0;
3374 
3375 	/*
3376 	 * Determine which symbol table is appropriate.
3377 	 */
3378 	if (OFL_IS_STATIC_OBJ(ofl))
3379 		symosp = ofl->ofl_ossymtab;
3380 	else
3381 		symosp = ofl->ofl_osdynsym;
3382 
3383 	/*
3384 	 * Update the .SUNW_capinfo sh_link to point to the appropriate symbol
3385 	 * table section.  If we're creating a dynamic object, the
3386 	 * .SUNW_capinfo sh_info is updated to point to the .SUNW_capchain
3387 	 * section.
3388 	 */
3389 	ciosp = ofl->ofl_oscapinfo;
3390 	ciosp->os_shdr->sh_link = (Word)elf_ndxscn(symosp->os_scn);
3391 
3392 	if (OFL_IS_STATIC_OBJ(ofl) == 0) {
3393 		ccosp = ofl->ofl_oscapchain;
3394 		ciosp->os_shdr->sh_info = (Word)elf_ndxscn(ccosp->os_scn);
3395 	}
3396 
3397 	/*
3398 	 * Establish the data for each section.  The first element of each
3399 	 * section defines the section's version number.
3400 	 */
3401 	ocapinfo = ciosp->os_outdata->d_buf;
3402 	ocapinfo[0] = CAPINFO_CURRENT;
3403 	if (ccosp) {
3404 		ocapchain = ccosp->os_outdata->d_buf;
3405 		ocapchain[chainndx++] = CAPCHAIN_CURRENT;
3406 	}
3407 
3408 	/*
3409 	 * Traverse all capabilities families.  Each member has a .SUNW_capinfo
3410 	 * assignment.  The .SUNW_capinfo entry differs for relocatable objects
3411 	 * and dynamic objects.
3412 	 *
3413 	 * Relocatable objects:
3414 	 *			ELF_C_GROUP		ELF_C_SYM
3415 	 *
3416 	 * Family lead:		CAPINFO_SUNW_GLOB	lead symbol index
3417 	 * Family lead alias:	CAPINFO_SUNW_GLOB	lead symbol index
3418 	 * Family member:	.SUNW_cap index		lead symbol index
3419 	 *
3420 	 * Dynamic objects:
3421 	 *			ELF_C_GROUP		ELF_C_SYM
3422 	 *
3423 	 * Family lead:		CAPINFO_SUNW_GLOB	.SUNW_capchain index
3424 	 * Family lead alias:	CAPINFO_SUNW_GLOB	.SUNW_capchain index
3425 	 * Family member:	.SUNW_cap index		lead symbol index
3426 	 *
3427 	 * The ELF_C_GROUP field identifies a capabilities symbol.  Lead
3428 	 * capability symbols, and lead capability aliases are identified by
3429 	 * a CAPINFO_SUNW_GLOB group identifier.  For family members, the
3430 	 * ELF_C_GROUP provides an index to the associate capabilities group
3431 	 * (i.e, an index into the SUNW_cap section that defines a group).
3432 	 *
3433 	 * For relocatable objects, the ELF_C_SYM field identifies the lead
3434 	 * capability symbol.  For the lead symbol itself, the .SUNW_capinfo
3435 	 * index is the same as the ELF_C_SYM value.  For lead alias symbols,
3436 	 * the .SUNW_capinfo index differs from the ELF_C_SYM value.  This
3437 	 * differentiation of CAPINFO_SUNW_GLOB symbols allows ld(1) to
3438 	 * identify, and propagate lead alias symbols.  For example, the lead
3439 	 * capability symbol memcpy() would have the ELF_C_SYM for memcpy(),
3440 	 * and the lead alias _memcpy() would also have the ELF_C_SYM for
3441 	 * memcpy().
3442 	 *
3443 	 * For dynamic objects, both a lead capability symbol, and alias symbol
3444 	 * would have a ELF_C_SYM value that represents the same capability
3445 	 * chain index.  The capability chain allows ld.so.1 to traverse a
3446 	 * family chain for a given lead symbol, and select the most appropriate
3447 	 * family member.  The .SUNW_capchain array contains a series of symbol
3448 	 * indexes for each family member:
3449 	 *
3450 	 *    chaincap[n]  chaincap[n + 1]  chaincap[n + 2]  chaincap[n + x]
3451 	 *	foo() ndx    foo%x() ndx	foo%y() ndx	0
3452 	 *
3453 	 * For family members, the ELF_C_SYM value associates the capability
3454 	 * members with their family lead symbol.  This association, although
3455 	 * unused within a dynamic object, allows ld(1) to identify, and
3456 	 * propagate family members when processing relocatable objects.
3457 	 */
3458 	for (cav = avl_first(ofl->ofl_capfamilies); cav;
3459 	    cav = AVL_NEXT(ofl->ofl_capfamilies, cav)) {
3460 		Cap_sym		*csp;
3461 		Aliste		idx;
3462 		Sym_desc	*asdp, *lsdp = cav->cn_symavlnode.sav_sdp;
3463 
3464 		if (ccosp) {
3465 			/*
3466 			 * For a dynamic object, identify this lead symbol, and
3467 			 * point it to the head of a capability chain.  Set the
3468 			 * head of the capability chain to the same lead symbol.
3469 			 */
3470 			ocapinfo[lsdp->sd_symndx] =
3471 			    ELF_C_INFO(chainndx, CAPINFO_SUNW_GLOB);
3472 			ocapchain[chainndx] = lsdp->sd_symndx;
3473 		} else {
3474 			/*
3475 			 * For a relocatable object, identify this lead symbol,
3476 			 * and set the lead symbol index to itself.
3477 			 */
3478 			ocapinfo[lsdp->sd_symndx] =
3479 			    ELF_C_INFO(lsdp->sd_symndx, CAPINFO_SUNW_GLOB);
3480 		}
3481 
3482 		/*
3483 		 * Gather any lead symbol aliases.
3484 		 */
3485 		for (APLIST_TRAVERSE(cav->cn_aliases, idx, asdp)) {
3486 			if (ccosp) {
3487 				/*
3488 				 * For a dynamic object, identify this lead
3489 				 * alias symbol, and point it to the same
3490 				 * capability chain index as the lead symbol.
3491 				 */
3492 				ocapinfo[asdp->sd_symndx] =
3493 				    ELF_C_INFO(chainndx, CAPINFO_SUNW_GLOB);
3494 			} else {
3495 				/*
3496 				 * For a relocatable object, identify this lead
3497 				 * alias symbol, and set the lead symbol index
3498 				 * to the lead symbol.
3499 				 */
3500 				ocapinfo[asdp->sd_symndx] =
3501 				    ELF_C_INFO(lsdp->sd_symndx,
3502 				    CAPINFO_SUNW_GLOB);
3503 			}
3504 		}
3505 
3506 		chainndx++;
3507 
3508 		/*
3509 		 * Gather the family members.
3510 		 */
3511 		for (APLIST_TRAVERSE(cav->cn_members, idx, csp)) {
3512 			Sym_desc	*msdp = csp->cs_sdp;
3513 
3514 			/*
3515 			 * Identify the members capability group, and the lead
3516 			 * symbol of the family this symbol is a member of.
3517 			 */
3518 			ocapinfo[msdp->sd_symndx] =
3519 			    ELF_C_INFO(lsdp->sd_symndx, csp->cs_group->cg_ndx);
3520 			if (ccosp) {
3521 				/*
3522 				 * For a dynamic object, set the next capability
3523 				 * chain to point to this family member.
3524 				 */
3525 				ocapchain[chainndx++] = msdp->sd_symndx;
3526 			}
3527 		}
3528 
3529 		/*
3530 		 * Any chain of family members is terminated with a 0 element.
3531 		 */
3532 		if (ccosp)
3533 			ocapchain[chainndx++] = 0;
3534 	}
3535 }
3536 
3537 /*
3538  * Translate the shdr->sh_{link, info} from its input section value to that
3539  * of the corresponding shdr->sh_{link, info} output section value.
3540  */
3541 static Word
3542 translate_link(Ofl_desc *ofl, Os_desc *osp, Word link, const char *msg)
3543 {
3544 	Is_desc		*isp;
3545 	Ifl_desc	*ifl;
3546 
3547 	/*
3548 	 * Don't translate the special section numbers.
3549 	 */
3550 	if (link >= SHN_LORESERVE)
3551 		return (link);
3552 
3553 	/*
3554 	 * Does this output section translate back to an input file.  If not
3555 	 * then there is no translation to do.  In this case we will assume that
3556 	 * if sh_link has a value, it's the right value.
3557 	 */
3558 	isp = ld_os_first_isdesc(osp);
3559 	if ((ifl = isp->is_file) == NULL)
3560 		return (link);
3561 
3562 	/*
3563 	 * Sanity check to make sure that the sh_{link, info} value
3564 	 * is within range for the input file.
3565 	 */
3566 	if (link >= ifl->ifl_shnum) {
3567 		eprintf(ofl->ofl_lml, ERR_WARNING, msg, ifl->ifl_name,
3568 		    EC_WORD(isp->is_scnndx), isp->is_name, EC_XWORD(link));
3569 		return (link);
3570 	}
3571 
3572 	/*
3573 	 * Follow the link to the input section.
3574 	 */
3575 	if ((isp = ifl->ifl_isdesc[link]) == NULL)
3576 		return (0);
3577 	if ((osp = isp->is_osdesc) == NULL)
3578 		return (0);
3579 
3580 	/* LINTED */
3581 	return ((Word)elf_ndxscn(osp->os_scn));
3582 }
3583 
3584 /*
3585  * Having created all of the necessary sections, segments, and associated
3586  * headers, fill in the program headers and update any other data in the
3587  * output image.  Some general rules:
3588  *
3589  *  -	If an interpreter is required always generate a PT_PHDR entry as
3590  *	well.  It is this entry that triggers the kernel into passing the
3591  *	interpreter an aux vector instead of just a file descriptor.
3592  *
3593  *  -	When generating an image that will be interpreted (ie. a dynamic
3594  *	executable, a shared object, or a static executable that has been
3595  *	provided with an interpreter - weird, but possible), make the initial
3596  *	loadable segment include both the ehdr and phdr[].  Both of these
3597  *	tables are used by the interpreter therefore it seems more intuitive
3598  *	to explicitly defined them as part of the mapped image rather than
3599  *	relying on page rounding by the interpreter to allow their access.
3600  *
3601  *  -	When generating a static image that does not require an interpreter
3602  *	have the first loadable segment indicate the address of the first
3603  *	.section as the start address (things like /kernel/unix and ufsboot
3604  *	expect this behavior).
3605  */
3606 uintptr_t
3607 ld_update_outfile(Ofl_desc *ofl)
3608 {
3609 	Addr		size, etext, vaddr;
3610 	Sg_desc		*sgp;
3611 	Sg_desc		*dtracesgp = NULL, *capsgp = NULL, *intpsgp = NULL;
3612 	Os_desc		*osp;
3613 	int		phdrndx = 0, segndx = -1, secndx, intppndx, intpsndx;
3614 	int		dtracepndx, dtracesndx, cappndx, capsndx;
3615 	Ehdr		*ehdr = ofl->ofl_nehdr;
3616 	Shdr		*hshdr;
3617 	Phdr		*_phdr = NULL;
3618 	Word		phdrsz = (ehdr->e_phnum * ehdr->e_phentsize), shscnndx;
3619 	ofl_flag_t	flags = ofl->ofl_flags;
3620 	Word		ehdrsz = ehdr->e_ehsize;
3621 	Boolean		nobits;
3622 	Off		offset;
3623 	Aliste		idx1;
3624 
3625 	/*
3626 	 * Initialize the starting address for the first segment.  Executables
3627 	 * have different starting addresses depending upon the target ABI,
3628 	 * where as shared objects have a starting address of 0.  If this is
3629 	 * a 64-bit executable that is being constructed to run in a restricted
3630 	 * address space, use an alternative origin that will provide more free
3631 	 * address space for the the eventual process.
3632 	 */
3633 	if (ofl->ofl_flags & FLG_OF_EXEC) {
3634 #if	defined(_ELF64)
3635 		if (ofl->ofl_ocapset.oc_sf_1.cm_val & SF1_SUNW_ADDR32)
3636 			vaddr = ld_targ.t_m.m_segm_aorigin;
3637 		else
3638 #endif
3639 			vaddr = ld_targ.t_m.m_segm_origin;
3640 	} else
3641 		vaddr = 0;
3642 
3643 	/*
3644 	 * Loop through the segment descriptors and pick out what we need.
3645 	 */
3646 	DBG_CALL(Dbg_seg_title(ofl->ofl_lml));
3647 	for (APLIST_TRAVERSE(ofl->ofl_segs, idx1, sgp)) {
3648 		Phdr		*phdr = &(sgp->sg_phdr);
3649 		Xword 		p_align;
3650 		Aliste		idx2;
3651 		Sym_desc	*sdp;
3652 
3653 		segndx++;
3654 
3655 		/*
3656 		 * If an interpreter is required generate a PT_INTERP and
3657 		 * PT_PHDR program header entry.  The PT_PHDR entry describes
3658 		 * the program header table itself.  This information will be
3659 		 * passed via the aux vector to the interpreter (ld.so.1).
3660 		 * The program header array is actually part of the first
3661 		 * loadable segment (and the PT_PHDR entry is the first entry),
3662 		 * therefore its virtual address isn't known until the first
3663 		 * loadable segment is processed.
3664 		 */
3665 		if (phdr->p_type == PT_PHDR) {
3666 			if (ofl->ofl_osinterp) {
3667 				phdr->p_offset = ehdr->e_phoff;
3668 				phdr->p_filesz = phdr->p_memsz = phdrsz;
3669 
3670 				DBG_CALL(Dbg_seg_entry(ofl, segndx, sgp));
3671 				ofl->ofl_phdr[phdrndx++] = *phdr;
3672 			}
3673 			continue;
3674 		}
3675 		if (phdr->p_type == PT_INTERP) {
3676 			if (ofl->ofl_osinterp) {
3677 				intpsgp = sgp;
3678 				intpsndx = segndx;
3679 				intppndx = phdrndx++;
3680 			}
3681 			continue;
3682 		}
3683 
3684 		/*
3685 		 * If we are creating a PT_SUNWDTRACE segment, remember where
3686 		 * the program header is.  The header values are assigned after
3687 		 * update_osym() has completed and the symbol table addresses
3688 		 * have been updated.
3689 		 */
3690 		if (phdr->p_type == PT_SUNWDTRACE) {
3691 			if (ofl->ofl_dtracesym &&
3692 			    ((flags & FLG_OF_RELOBJ) == 0)) {
3693 				dtracesgp = sgp;
3694 				dtracesndx = segndx;
3695 				dtracepndx = phdrndx++;
3696 			}
3697 			continue;
3698 		}
3699 
3700 		/*
3701 		 * If a hardware/software capabilities section is required,
3702 		 * generate the PT_SUNWCAP header.  Note, as this comes before
3703 		 * the first loadable segment, we don't yet know its real
3704 		 * virtual address.  This is updated later.
3705 		 */
3706 		if (phdr->p_type == PT_SUNWCAP) {
3707 			if (ofl->ofl_oscap && (ofl->ofl_flags & FLG_OF_PTCAP) &&
3708 			    ((flags & FLG_OF_RELOBJ) == 0)) {
3709 				capsgp = sgp;
3710 				capsndx = segndx;
3711 				cappndx = phdrndx++;
3712 			}
3713 			continue;
3714 		}
3715 
3716 		/*
3717 		 * As the dynamic program header occurs after the loadable
3718 		 * headers in the segment descriptor table, all the address
3719 		 * information for the .dynamic output section will have been
3720 		 * figured out by now.
3721 		 */
3722 		if (phdr->p_type == PT_DYNAMIC) {
3723 			if (OFL_ALLOW_DYNSYM(ofl)) {
3724 				Shdr	*shdr = ofl->ofl_osdynamic->os_shdr;
3725 
3726 				phdr->p_vaddr = shdr->sh_addr;
3727 				phdr->p_offset = shdr->sh_offset;
3728 				phdr->p_filesz = shdr->sh_size;
3729 				phdr->p_flags = ld_targ.t_m.m_dataseg_perm;
3730 
3731 				DBG_CALL(Dbg_seg_entry(ofl, segndx, sgp));
3732 				ofl->ofl_phdr[phdrndx++] = *phdr;
3733 			}
3734 			continue;
3735 		}
3736 
3737 		/*
3738 		 * As the unwind (.eh_frame_hdr) program header occurs after
3739 		 * the loadable headers in the segment descriptor table, all
3740 		 * the address information for the .eh_frame output section
3741 		 * will have been figured out by now.
3742 		 */
3743 		if (phdr->p_type == PT_SUNW_UNWIND) {
3744 			Shdr	    *shdr;
3745 
3746 			if (ofl->ofl_unwindhdr == NULL)
3747 				continue;
3748 
3749 			shdr = ofl->ofl_unwindhdr->os_shdr;
3750 
3751 			phdr->p_flags = PF_R;
3752 			phdr->p_vaddr = shdr->sh_addr;
3753 			phdr->p_memsz = shdr->sh_size;
3754 			phdr->p_filesz = shdr->sh_size;
3755 			phdr->p_offset = shdr->sh_offset;
3756 			phdr->p_align = shdr->sh_addralign;
3757 			phdr->p_paddr = 0;
3758 			ofl->ofl_phdr[phdrndx++] = *phdr;
3759 			continue;
3760 		}
3761 
3762 		/*
3763 		 * The sunwstack program is used to convey non-default
3764 		 * flags for the process stack. Only emit it if it would
3765 		 * change the default.
3766 		 */
3767 		if (phdr->p_type == PT_SUNWSTACK) {
3768 			if (((flags & FLG_OF_RELOBJ) == 0) &&
3769 			    ((sgp->sg_flags & FLG_SG_DISABLED) == 0))
3770 				ofl->ofl_phdr[phdrndx++] = *phdr;
3771 			continue;
3772 		}
3773 
3774 		/*
3775 		 * As the TLS program header occurs after the loadable
3776 		 * headers in the segment descriptor table, all the address
3777 		 * information for the .tls output section will have been
3778 		 * figured out by now.
3779 		 */
3780 		if (phdr->p_type == PT_TLS) {
3781 			Os_desc		*tlsosp;
3782 			Shdr		*lastfileshdr = NULL;
3783 			Shdr		*firstshdr = NULL, *lastshdr;
3784 			Aliste		idx;
3785 
3786 			if (ofl->ofl_ostlsseg == NULL)
3787 				continue;
3788 
3789 			/*
3790 			 * Scan the output sections that have contributed TLS.
3791 			 * Remember the first and last so as to determine the
3792 			 * TLS memory size requirement.  Remember the last
3793 			 * progbits section to determine the TLS data
3794 			 * contribution, which determines the TLS program
3795 			 * header filesz.
3796 			 */
3797 			for (APLIST_TRAVERSE(ofl->ofl_ostlsseg, idx, tlsosp)) {
3798 				Shdr	*tlsshdr = tlsosp->os_shdr;
3799 
3800 				if (firstshdr == NULL)
3801 					firstshdr = tlsshdr;
3802 				if (tlsshdr->sh_type != SHT_NOBITS)
3803 					lastfileshdr = tlsshdr;
3804 				lastshdr = tlsshdr;
3805 			}
3806 
3807 			phdr->p_flags = PF_R | PF_W;
3808 			phdr->p_vaddr = firstshdr->sh_addr;
3809 			phdr->p_offset = firstshdr->sh_offset;
3810 			phdr->p_align = firstshdr->sh_addralign;
3811 
3812 			/*
3813 			 * Determine the initialized TLS data size.  This
3814 			 * address range is from the start of the TLS segment
3815 			 * to the end of the last piece of initialized data.
3816 			 */
3817 			if (lastfileshdr)
3818 				phdr->p_filesz = lastfileshdr->sh_offset +
3819 				    lastfileshdr->sh_size - phdr->p_offset;
3820 			else
3821 				phdr->p_filesz = 0;
3822 
3823 			/*
3824 			 * Determine the total TLS memory size.  This includes
3825 			 * all TLS data and TLS uninitialized data.  This
3826 			 * address range is from the start of the TLS segment
3827 			 * to the memory address of the last piece of
3828 			 * uninitialized data.
3829 			 */
3830 			phdr->p_memsz = lastshdr->sh_addr +
3831 			    lastshdr->sh_size - phdr->p_vaddr;
3832 
3833 			DBG_CALL(Dbg_seg_entry(ofl, segndx, sgp));
3834 			ofl->ofl_phdr[phdrndx] = *phdr;
3835 			ofl->ofl_tlsphdr = &ofl->ofl_phdr[phdrndx++];
3836 			continue;
3837 		}
3838 
3839 		/*
3840 		 * If this is an empty segment declaration, it will occur after
3841 		 * all other loadable segments.  As empty segments can be
3842 		 * defined with fixed addresses, make sure that no loadable
3843 		 * segments overlap.  This might occur as the object evolves
3844 		 * and the loadable segments grow, thus encroaching upon an
3845 		 * existing segment reservation.
3846 		 *
3847 		 * Segments are only created for dynamic objects, thus this
3848 		 * checking can be skipped when building a relocatable object.
3849 		 */
3850 		if (!(flags & FLG_OF_RELOBJ) &&
3851 		    (sgp->sg_flags & FLG_SG_EMPTY)) {
3852 			int	i;
3853 			Addr	v_e;
3854 
3855 			vaddr = phdr->p_vaddr;
3856 			phdr->p_memsz = sgp->sg_length;
3857 			DBG_CALL(Dbg_seg_entry(ofl, segndx, sgp));
3858 			ofl->ofl_phdr[phdrndx++] = *phdr;
3859 
3860 			if (phdr->p_type != PT_LOAD)
3861 				continue;
3862 
3863 			v_e = vaddr + phdr->p_memsz;
3864 
3865 			/*
3866 			 * Check overlaps
3867 			 */
3868 			for (i = 0; i < phdrndx - 1; i++) {
3869 				Addr 	p_s = (ofl->ofl_phdr[i]).p_vaddr;
3870 				Addr 	p_e;
3871 
3872 				if ((ofl->ofl_phdr[i]).p_type != PT_LOAD)
3873 					continue;
3874 
3875 				p_e = p_s + (ofl->ofl_phdr[i]).p_memsz;
3876 				if (((p_s <= vaddr) && (p_e > vaddr)) ||
3877 				    ((vaddr <= p_s) && (v_e > p_s)))
3878 					eprintf(ofl->ofl_lml, ERR_WARNING,
3879 					    MSG_INTL(MSG_UPD_SEGOVERLAP),
3880 					    ofl->ofl_name, EC_ADDR(p_e),
3881 					    sgp->sg_name, EC_ADDR(vaddr));
3882 			}
3883 			continue;
3884 		}
3885 
3886 		/*
3887 		 * Having processed any of the special program headers any
3888 		 * remaining headers will be built to express individual
3889 		 * segments.  Segments are only built if they have output
3890 		 * section descriptors associated with them (ie. some form of
3891 		 * input section has been matched to this segment).
3892 		 */
3893 		if (sgp->sg_osdescs == NULL)
3894 			continue;
3895 
3896 		/*
3897 		 * Determine the segments offset and size from the section
3898 		 * information provided from elf_update().
3899 		 * Allow for multiple NOBITS sections.
3900 		 */
3901 		osp = sgp->sg_osdescs->apl_data[0];
3902 		hshdr = osp->os_shdr;
3903 
3904 		phdr->p_filesz = 0;
3905 		phdr->p_memsz = 0;
3906 		phdr->p_offset = offset = hshdr->sh_offset;
3907 
3908 		nobits = ((hshdr->sh_type == SHT_NOBITS) &&
3909 		    ((sgp->sg_flags & FLG_SG_PHREQ) == 0));
3910 
3911 		for (APLIST_TRAVERSE(sgp->sg_osdescs, idx2, osp)) {
3912 			Shdr	*shdr = osp->os_shdr;
3913 
3914 			p_align = 0;
3915 			if (shdr->sh_addralign > p_align)
3916 				p_align = shdr->sh_addralign;
3917 
3918 			offset = (Off)S_ROUND(offset, shdr->sh_addralign);
3919 			offset += shdr->sh_size;
3920 
3921 			if (shdr->sh_type != SHT_NOBITS) {
3922 				if (nobits) {
3923 					eprintf(ofl->ofl_lml, ERR_FATAL,
3924 					    MSG_INTL(MSG_UPD_NOBITS));
3925 					return (S_ERROR);
3926 				}
3927 				phdr->p_filesz = offset - phdr->p_offset;
3928 			} else if ((sgp->sg_flags & FLG_SG_PHREQ) == 0)
3929 				nobits = TRUE;
3930 		}
3931 		phdr->p_memsz = offset - hshdr->sh_offset;
3932 
3933 		/*
3934 		 * If this is the first loadable segment of a dynamic object,
3935 		 * or an interpreter has been specified (a static object built
3936 		 * with an interpreter will still be given a PT_HDR entry), then
3937 		 * compensate for the elf header and program header array.  Both
3938 		 * of these are actually part of the loadable segment as they
3939 		 * may be inspected by the interpreter.  Adjust the segments
3940 		 * size and offset accordingly.
3941 		 */
3942 		if ((_phdr == NULL) && (phdr->p_type == PT_LOAD) &&
3943 		    ((ofl->ofl_osinterp) || (flags & FLG_OF_DYNAMIC)) &&
3944 		    (!(ofl->ofl_dtflags_1 & DF_1_NOHDR))) {
3945 			size = (Addr)S_ROUND((phdrsz + ehdrsz),
3946 			    hshdr->sh_addralign);
3947 			phdr->p_offset -= size;
3948 			phdr->p_filesz += size;
3949 			phdr->p_memsz += size;
3950 		}
3951 
3952 		/*
3953 		 * If segment size symbols are required (specified via a
3954 		 * mapfile) update their value.
3955 		 */
3956 		for (APLIST_TRAVERSE(sgp->sg_sizesym, idx2, sdp))
3957 			sdp->sd_sym->st_value = phdr->p_memsz;
3958 
3959 		/*
3960 		 * If no file content has been assigned to this segment (it
3961 		 * only contains no-bits sections), then reset the offset for
3962 		 * consistency.
3963 		 */
3964 		if (phdr->p_filesz == 0)
3965 			phdr->p_offset = 0;
3966 
3967 		/*
3968 		 * If a virtual address has been specified for this segment
3969 		 * from a mapfile use it and make sure the previous segment
3970 		 * does not run into this segment.
3971 		 */
3972 		if (phdr->p_type == PT_LOAD) {
3973 			if ((sgp->sg_flags & FLG_SG_P_VADDR)) {
3974 				if (_phdr && (vaddr > phdr->p_vaddr) &&
3975 				    (phdr->p_type == PT_LOAD))
3976 					eprintf(ofl->ofl_lml, ERR_WARNING,
3977 					    MSG_INTL(MSG_UPD_SEGOVERLAP),
3978 					    ofl->ofl_name, EC_ADDR(vaddr),
3979 					    sgp->sg_name,
3980 					    EC_ADDR(phdr->p_vaddr));
3981 				vaddr = phdr->p_vaddr;
3982 				phdr->p_align = 0;
3983 			} else {
3984 				vaddr = phdr->p_vaddr =
3985 				    (Addr)S_ROUND(vaddr, phdr->p_align);
3986 			}
3987 		}
3988 
3989 		/*
3990 		 * Adjust the address offset and p_align if needed.
3991 		 */
3992 		if (((sgp->sg_flags & FLG_SG_P_VADDR) == 0) &&
3993 		    ((ofl->ofl_dtflags_1 & DF_1_NOHDR) == 0)) {
3994 			if (phdr->p_align != 0)
3995 				vaddr += phdr->p_offset % phdr->p_align;
3996 			else
3997 				vaddr += phdr->p_offset;
3998 			phdr->p_vaddr = vaddr;
3999 		}
4000 
4001 		/*
4002 		 * If an interpreter is required set the virtual address of the
4003 		 * PT_PHDR program header now that we know the virtual address
4004 		 * of the loadable segment that contains it.  Update the
4005 		 * PT_SUNWCAP header similarly.
4006 		 */
4007 		if ((_phdr == NULL) && (phdr->p_type == PT_LOAD)) {
4008 			_phdr = phdr;
4009 
4010 			if ((ofl->ofl_dtflags_1 & DF_1_NOHDR) == 0) {
4011 				if (ofl->ofl_osinterp)
4012 					ofl->ofl_phdr[0].p_vaddr =
4013 					    vaddr + ehdrsz;
4014 
4015 				/*
4016 				 * Finally, if we're creating a dynamic object
4017 				 * (or a static object in which an interpreter
4018 				 * is specified) update the vaddr to reflect
4019 				 * the address of the first section within this
4020 				 * segment.
4021 				 */
4022 				if ((ofl->ofl_osinterp) ||
4023 				    (flags & FLG_OF_DYNAMIC))
4024 					vaddr += size;
4025 			} else {
4026 				/*
4027 				 * If the DF_1_NOHDR flag was set, and an
4028 				 * interpreter is being generated, the PT_PHDR
4029 				 * will not be part of any loadable segment.
4030 				 */
4031 				if (ofl->ofl_osinterp) {
4032 					ofl->ofl_phdr[0].p_vaddr = 0;
4033 					ofl->ofl_phdr[0].p_memsz = 0;
4034 					ofl->ofl_phdr[0].p_flags = 0;
4035 				}
4036 			}
4037 		}
4038 
4039 		/*
4040 		 * Ensure the ELF entry point defaults to zero.  Typically, this
4041 		 * value is overridden in update_oehdr() to one of the standard
4042 		 * entry points.  Historically, this default was set to the
4043 		 * address of first executable section, but this has since been
4044 		 * found to be more confusing than it is helpful.
4045 		 */
4046 		ehdr->e_entry = 0;
4047 
4048 		DBG_CALL(Dbg_seg_entry(ofl, segndx, sgp));
4049 
4050 		/*
4051 		 * Traverse the output section descriptors for this segment so
4052 		 * that we can update the section headers addresses.  We've
4053 		 * calculated the virtual address of the initial section within
4054 		 * this segment, so each successive section can be calculated
4055 		 * based on their offsets from each other.
4056 		 */
4057 		secndx = 0;
4058 		hshdr = 0;
4059 		for (APLIST_TRAVERSE(sgp->sg_osdescs, idx2, osp)) {
4060 			Shdr	*shdr = osp->os_shdr;
4061 
4062 			if (shdr->sh_link)
4063 				shdr->sh_link = translate_link(ofl, osp,
4064 				    shdr->sh_link, MSG_INTL(MSG_FIL_INVSHLINK));
4065 
4066 			if (shdr->sh_info && (shdr->sh_flags & SHF_INFO_LINK))
4067 				shdr->sh_info = translate_link(ofl, osp,
4068 				    shdr->sh_info, MSG_INTL(MSG_FIL_INVSHINFO));
4069 
4070 			if (!(flags & FLG_OF_RELOBJ) &&
4071 			    (phdr->p_type == PT_LOAD)) {
4072 				if (hshdr)
4073 					vaddr += (shdr->sh_offset -
4074 					    hshdr->sh_offset);
4075 
4076 				shdr->sh_addr = vaddr;
4077 				hshdr = shdr;
4078 			}
4079 
4080 			DBG_CALL(Dbg_seg_os(ofl, osp, secndx));
4081 			secndx++;
4082 		}
4083 
4084 		/*
4085 		 * Establish the virtual address of the end of the last section
4086 		 * in this segment so that the next segments offset can be
4087 		 * calculated from this.
4088 		 */
4089 		if (hshdr)
4090 			vaddr += hshdr->sh_size;
4091 
4092 		/*
4093 		 * Output sections for this segment complete.  Adjust the
4094 		 * virtual offset for the last sections size, and make sure we
4095 		 * haven't exceeded any maximum segment length specification.
4096 		 */
4097 		if ((sgp->sg_length != 0) && (sgp->sg_length < phdr->p_memsz)) {
4098 			eprintf(ofl->ofl_lml, ERR_FATAL,
4099 			    MSG_INTL(MSG_UPD_LARGSIZE), ofl->ofl_name,
4100 			    sgp->sg_name, EC_XWORD(phdr->p_memsz),
4101 			    EC_XWORD(sgp->sg_length));
4102 			return (S_ERROR);
4103 		}
4104 
4105 		if (phdr->p_type == PT_NOTE) {
4106 			phdr->p_vaddr = 0;
4107 			phdr->p_paddr = 0;
4108 			phdr->p_align = 0;
4109 			phdr->p_memsz = 0;
4110 		}
4111 
4112 		if ((phdr->p_type != PT_NULL) && !(flags & FLG_OF_RELOBJ))
4113 			ofl->ofl_phdr[phdrndx++] = *phdr;
4114 	}
4115 
4116 	/*
4117 	 * Update any new output sections.  When building the initial output
4118 	 * image, a number of sections were created but left uninitialized (eg.
4119 	 * .dynsym, .dynstr, .symtab, .symtab, etc.).  Here we update these
4120 	 * sections with the appropriate data.  Other sections may still be
4121 	 * modified via reloc_process().
4122 	 *
4123 	 * Copy the interpreter name into the .interp section.
4124 	 */
4125 	if (ofl->ofl_interp)
4126 		(void) strcpy((char *)ofl->ofl_osinterp->os_outdata->d_buf,
4127 		    ofl->ofl_interp);
4128 
4129 	/*
4130 	 * Update the .shstrtab, .strtab and .dynstr sections.
4131 	 */
4132 	update_ostrtab(ofl->ofl_osshstrtab, ofl->ofl_shdrsttab, 0);
4133 	update_ostrtab(ofl->ofl_osstrtab, ofl->ofl_strtab, 0);
4134 	update_ostrtab(ofl->ofl_osdynstr, ofl->ofl_dynstrtab, DYNSTR_EXTRA_PAD);
4135 
4136 	/*
4137 	 * Build any output symbol tables, the symbols information is copied
4138 	 * and updated into the new output image.
4139 	 */
4140 	if ((etext = update_osym(ofl)) == (Addr)S_ERROR)
4141 		return (S_ERROR);
4142 
4143 	/*
4144 	 * If we have an PT_INTERP phdr, update it now from the associated
4145 	 * section information.
4146 	 */
4147 	if (intpsgp) {
4148 		Phdr	*phdr = &(intpsgp->sg_phdr);
4149 		Shdr	*shdr = ofl->ofl_osinterp->os_shdr;
4150 
4151 		phdr->p_vaddr = shdr->sh_addr;
4152 		phdr->p_offset = shdr->sh_offset;
4153 		phdr->p_memsz = phdr->p_filesz = shdr->sh_size;
4154 		phdr->p_flags = PF_R;
4155 
4156 		DBG_CALL(Dbg_seg_entry(ofl, intpsndx, intpsgp));
4157 		ofl->ofl_phdr[intppndx] = *phdr;
4158 	}
4159 
4160 	/*
4161 	 * If we have a PT_SUNWDTRACE phdr, update it now with the address of
4162 	 * the symbol.  It's only now been updated via update_sym().
4163 	 */
4164 	if (dtracesgp) {
4165 		Phdr		*aphdr, *phdr = &(dtracesgp->sg_phdr);
4166 		Sym_desc	*sdp = ofl->ofl_dtracesym;
4167 
4168 		phdr->p_vaddr = sdp->sd_sym->st_value;
4169 		phdr->p_memsz = sdp->sd_sym->st_size;
4170 
4171 		/*
4172 		 * Take permissions from the segment that the symbol is
4173 		 * associated with.
4174 		 */
4175 		aphdr = &sdp->sd_isc->is_osdesc->os_sgdesc->sg_phdr;
4176 		assert(aphdr);
4177 		phdr->p_flags = aphdr->p_flags;
4178 
4179 		DBG_CALL(Dbg_seg_entry(ofl, dtracesndx, dtracesgp));
4180 		ofl->ofl_phdr[dtracepndx] = *phdr;
4181 	}
4182 
4183 	/*
4184 	 * If we have a PT_SUNWCAP phdr, update it now from the associated
4185 	 * section information.
4186 	 */
4187 	if (capsgp) {
4188 		Phdr	*phdr = &(capsgp->sg_phdr);
4189 		Shdr	*shdr = ofl->ofl_oscap->os_shdr;
4190 
4191 		phdr->p_vaddr = shdr->sh_addr;
4192 		phdr->p_offset = shdr->sh_offset;
4193 		phdr->p_memsz = phdr->p_filesz = shdr->sh_size;
4194 		phdr->p_flags = PF_R;
4195 
4196 		DBG_CALL(Dbg_seg_entry(ofl, capsndx, capsgp));
4197 		ofl->ofl_phdr[cappndx] = *phdr;
4198 	}
4199 
4200 	/*
4201 	 * Update the GROUP sections.
4202 	 */
4203 	if (update_ogroup(ofl) == S_ERROR)
4204 		return (S_ERROR);
4205 
4206 	/*
4207 	 * Update Move Table.
4208 	 */
4209 	if (ofl->ofl_osmove || ofl->ofl_isparexpn)
4210 		update_move(ofl);
4211 
4212 	/*
4213 	 * Build any output headers, version information, dynamic structure and
4214 	 * syminfo structure.
4215 	 */
4216 	if (update_oehdr(ofl) == S_ERROR)
4217 		return (S_ERROR);
4218 	if (!(flags & FLG_OF_NOVERSEC)) {
4219 		if ((flags & FLG_OF_VERDEF) &&
4220 		    (update_overdef(ofl) == S_ERROR))
4221 			return (S_ERROR);
4222 		if ((flags & FLG_OF_VERNEED) &&
4223 		    (update_overneed(ofl) == S_ERROR))
4224 			return (S_ERROR);
4225 		if (flags & (FLG_OF_VERNEED | FLG_OF_VERDEF))
4226 			update_oversym(ofl);
4227 	}
4228 	if (flags & FLG_OF_DYNAMIC) {
4229 		if (update_odynamic(ofl) == S_ERROR)
4230 			return (S_ERROR);
4231 	}
4232 	if (ofl->ofl_ossyminfo) {
4233 		if (update_osyminfo(ofl) == S_ERROR)
4234 			return (S_ERROR);
4235 	}
4236 
4237 	/*
4238 	 * Update capabilities information if required.
4239 	 */
4240 	if (ofl->ofl_oscap)
4241 		update_oscap(ofl);
4242 	if (ofl->ofl_oscapinfo)
4243 		update_oscapinfo(ofl);
4244 
4245 	/*
4246 	 * Sanity test: the first and last data byte of a string table
4247 	 * must be NULL.
4248 	 */
4249 	assert((ofl->ofl_osshstrtab == NULL) ||
4250 	    (*((char *)ofl->ofl_osshstrtab->os_outdata->d_buf) == '\0'));
4251 	assert((ofl->ofl_osshstrtab == NULL) ||
4252 	    (*(((char *)ofl->ofl_osshstrtab->os_outdata->d_buf) +
4253 	    ofl->ofl_osshstrtab->os_outdata->d_size - 1) == '\0'));
4254 
4255 	assert((ofl->ofl_osstrtab == NULL) ||
4256 	    (*((char *)ofl->ofl_osstrtab->os_outdata->d_buf) == '\0'));
4257 	assert((ofl->ofl_osstrtab == NULL) ||
4258 	    (*(((char *)ofl->ofl_osstrtab->os_outdata->d_buf) +
4259 	    ofl->ofl_osstrtab->os_outdata->d_size - 1) == '\0'));
4260 
4261 	assert((ofl->ofl_osdynstr == NULL) ||
4262 	    (*((char *)ofl->ofl_osdynstr->os_outdata->d_buf) == '\0'));
4263 	assert((ofl->ofl_osdynstr == NULL) ||
4264 	    (*(((char *)ofl->ofl_osdynstr->os_outdata->d_buf) +
4265 	    ofl->ofl_osdynstr->os_outdata->d_size - DYNSTR_EXTRA_PAD - 1) ==
4266 	    '\0'));
4267 
4268 	/*
4269 	 * Emit Strtab diagnostics.
4270 	 */
4271 	DBG_CALL(Dbg_sec_strtab(ofl->ofl_lml, ofl->ofl_osshstrtab,
4272 	    ofl->ofl_shdrsttab));
4273 	DBG_CALL(Dbg_sec_strtab(ofl->ofl_lml, ofl->ofl_osstrtab,
4274 	    ofl->ofl_strtab));
4275 	DBG_CALL(Dbg_sec_strtab(ofl->ofl_lml, ofl->ofl_osdynstr,
4276 	    ofl->ofl_dynstrtab));
4277 
4278 	/*
4279 	 * Initialize the section headers string table index within the elf
4280 	 * header.
4281 	 */
4282 	/* LINTED */
4283 	if ((shscnndx = elf_ndxscn(ofl->ofl_osshstrtab->os_scn)) <
4284 	    SHN_LORESERVE) {
4285 		ofl->ofl_nehdr->e_shstrndx =
4286 		    /* LINTED */
4287 		    (Half)shscnndx;
4288 	} else {
4289 		/*
4290 		 * If the STRTAB section index doesn't fit into
4291 		 * e_shstrndx, then we store it in 'shdr[0].st_link'.
4292 		 */
4293 		Elf_Scn	*scn;
4294 		Shdr	*shdr0;
4295 
4296 		if ((scn = elf_getscn(ofl->ofl_elf, 0)) == NULL) {
4297 			eprintf(ofl->ofl_lml, ERR_ELF,
4298 			    MSG_INTL(MSG_ELF_GETSCN), ofl->ofl_name);
4299 			return (S_ERROR);
4300 		}
4301 		if ((shdr0 = elf_getshdr(scn)) == NULL) {
4302 			eprintf(ofl->ofl_lml, ERR_ELF,
4303 			    MSG_INTL(MSG_ELF_GETSHDR), ofl->ofl_name);
4304 			return (S_ERROR);
4305 		}
4306 		ofl->ofl_nehdr->e_shstrndx = SHN_XINDEX;
4307 		shdr0->sh_link = shscnndx;
4308 	}
4309 
4310 	return ((uintptr_t)etext);
4311 }
4312