1 /* BFD backend for SunOS binaries.
2 Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2011, 2012
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
24 #define TARGETNAME "a.out-sunos-big"
26 /* Do not "beautify" the CONCAT* macro args. Traditional C will not
27 remove whitespace added here, and thus will fail to concatenate
29 #define MY(OP) CONCAT2 (sunos_big_,OP)
36 /* ??? Where should this go? */
37 #define MACHTYPE_OK(mtype) \
38 (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \
39 || ((mtype) == M_SPARCLET \
40 && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \
41 || ((mtype) == M_SPARCLITE_LE \
42 && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \
43 || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \
44 && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL))
46 #define MY_get_dynamic_symtab_upper_bound sunos_get_dynamic_symtab_upper_bound
47 #define MY_canonicalize_dynamic_symtab sunos_canonicalize_dynamic_symtab
48 #define MY_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab
49 #define MY_get_dynamic_reloc_upper_bound sunos_get_dynamic_reloc_upper_bound
50 #define MY_canonicalize_dynamic_reloc sunos_canonicalize_dynamic_reloc
51 #define MY_bfd_link_hash_table_create sunos_link_hash_table_create
52 #define MY_add_dynamic_symbols sunos_add_dynamic_symbols
53 #define MY_add_one_symbol sunos_add_one_symbol
54 #define MY_link_dynamic_object sunos_link_dynamic_object
55 #define MY_write_dynamic_symbol sunos_write_dynamic_symbol
56 #define MY_check_dynamic_reloc sunos_check_dynamic_reloc
57 #define MY_finish_dynamic_link sunos_finish_dynamic_link
59 static bfd_boolean sunos_add_dynamic_symbols (bfd *, struct bfd_link_info *, struct external_nlist **, bfd_size_type *, char **);
60 static bfd_boolean sunos_add_one_symbol (struct bfd_link_info *, bfd *, const char *, flagword, asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean, struct bfd_link_hash_entry **);
61 static bfd_boolean sunos_link_dynamic_object (struct bfd_link_info *, bfd *);
62 static bfd_boolean sunos_write_dynamic_symbol (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
63 static bfd_boolean sunos_check_dynamic_reloc (struct bfd_link_info *, bfd *, asection *, struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, bfd_vma *);
64 static bfd_boolean sunos_finish_dynamic_link (bfd *, struct bfd_link_info *);
65 static struct bfd_link_hash_table *sunos_link_hash_table_create (bfd *);
66 static long sunos_get_dynamic_symtab_upper_bound (bfd *);
67 static long sunos_canonicalize_dynamic_symtab (bfd *, asymbol **);
68 static long sunos_get_dynamic_reloc_upper_bound (bfd *);
69 static long sunos_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **);
71 /* Include the usual a.out support. */
74 /* The SunOS 4.1.4 /usr/include/locale.h defines valid as a macro. */
77 /* SunOS shared library support. We store a pointer to this structure
78 in obj_aout_dynamic_info (abfd). */
80 struct sunos_dynamic_info
82 /* Whether we found any dynamic information. */
84 /* Dynamic information. */
85 struct internal_sun4_dynamic_link dyninfo;
86 /* Number of dynamic symbols. */
87 unsigned long dynsym_count;
88 /* Read in nlists for dynamic symbols. */
89 struct external_nlist *dynsym;
90 /* asymbol structures for dynamic symbols. */
91 aout_symbol_type *canonical_dynsym;
92 /* Read in dynamic string table. */
94 /* Number of dynamic relocs. */
95 unsigned long dynrel_count;
96 /* Read in dynamic relocs. This may be reloc_std_external or
97 reloc_ext_external. */
99 /* arelent structures for dynamic relocs. */
100 arelent *canonical_dynrel;
103 /* The hash table of dynamic symbols is composed of two word entries.
104 See include/aout/sun4.h for details. */
106 #define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD)
108 /* Read in the basic dynamic information. This locates the __DYNAMIC
109 structure and uses it to find the dynamic_link structure. It
110 creates and saves a sunos_dynamic_info structure. If it can't find
111 __DYNAMIC, it sets the valid field of the sunos_dynamic_info
112 structure to FALSE to avoid doing this work again. */
115 sunos_read_dynamic_info (bfd *abfd)
117 struct sunos_dynamic_info *info;
120 struct external_sun4_dynamic dyninfo;
121 unsigned long dynver;
122 struct external_sun4_dynamic_link linkinfo;
125 if (obj_aout_dynamic_info (abfd) != NULL)
128 if ((abfd->flags & DYNAMIC) == 0)
130 bfd_set_error (bfd_error_invalid_operation);
134 amt = sizeof (struct sunos_dynamic_info);
135 info = bfd_zalloc (abfd, amt);
141 info->canonical_dynsym = NULL;
143 info->canonical_dynrel = NULL;
144 obj_aout_dynamic_info (abfd) = (void *) info;
146 /* This code used to look for the __DYNAMIC symbol to locate the dynamic
148 However this inhibits recovering the dynamic symbols from a
149 stripped object file, so blindly assume that the dynamic linking
150 information is located at the start of the data section.
151 We could verify this assumption later by looking through the dynamic
152 symbols for the __DYNAMIC symbol. */
153 if ((abfd->flags & DYNAMIC) == 0)
155 if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (void *) &dyninfo,
157 (bfd_size_type) sizeof dyninfo))
160 dynver = GET_WORD (abfd, dyninfo.ld_version);
161 if (dynver != 2 && dynver != 3)
164 dynoff = GET_WORD (abfd, dyninfo.ld);
166 /* dynoff is a virtual address. It is probably always in the .data
167 section, but this code should work even if it moves. */
168 if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd)))
169 dynsec = obj_textsec (abfd);
171 dynsec = obj_datasec (abfd);
172 dynoff -= bfd_get_section_vma (abfd, dynsec);
173 if (dynoff > dynsec->size)
176 /* This executable appears to be dynamically linked in a way that we
178 if (! bfd_get_section_contents (abfd, dynsec, (void *) &linkinfo,
180 (bfd_size_type) sizeof linkinfo))
183 /* Swap in the dynamic link information. */
184 info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded);
185 info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need);
186 info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules);
187 info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got);
188 info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt);
189 info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel);
190 info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash);
191 info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab);
192 info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash);
193 info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets);
194 info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols);
195 info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size);
196 info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text);
197 info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz);
199 /* Reportedly the addresses need to be offset by the size of the
200 exec header in an NMAGIC file. */
201 if (adata (abfd).magic == n_magic)
203 unsigned long exec_bytes_size = adata (abfd).exec_bytes_size;
205 info->dyninfo.ld_need += exec_bytes_size;
206 info->dyninfo.ld_rules += exec_bytes_size;
207 info->dyninfo.ld_rel += exec_bytes_size;
208 info->dyninfo.ld_hash += exec_bytes_size;
209 info->dyninfo.ld_stab += exec_bytes_size;
210 info->dyninfo.ld_symbols += exec_bytes_size;
213 /* The only way to get the size of the symbol information appears to
214 be to determine the distance between it and the string table. */
215 info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab)
216 / EXTERNAL_NLIST_SIZE);
217 BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE
218 == (unsigned long) (info->dyninfo.ld_symbols
219 - info->dyninfo.ld_stab));
221 /* Similarly, the relocs end at the hash table. */
222 info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel)
223 / obj_reloc_entry_size (abfd));
224 BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd)
225 == (unsigned long) (info->dyninfo.ld_hash
226 - info->dyninfo.ld_rel));
233 /* Return the amount of memory required for the dynamic symbols. */
236 sunos_get_dynamic_symtab_upper_bound (bfd *abfd)
238 struct sunos_dynamic_info *info;
240 if (! sunos_read_dynamic_info (abfd))
243 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
246 bfd_set_error (bfd_error_no_symbols);
250 return (info->dynsym_count + 1) * sizeof (asymbol *);
253 /* Read the external dynamic symbols. */
256 sunos_slurp_dynamic_symtab (bfd *abfd)
258 struct sunos_dynamic_info *info;
261 /* Get the general dynamic information. */
262 if (obj_aout_dynamic_info (abfd) == NULL)
264 if (! sunos_read_dynamic_info (abfd))
268 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
271 bfd_set_error (bfd_error_no_symbols);
275 /* Get the dynamic nlist structures. */
276 if (info->dynsym == NULL)
278 amt = (bfd_size_type) info->dynsym_count * EXTERNAL_NLIST_SIZE;
279 info->dynsym = bfd_alloc (abfd, amt);
280 if (info->dynsym == NULL && info->dynsym_count != 0)
282 if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_stab, SEEK_SET) != 0
283 || bfd_bread ((void *) info->dynsym, amt, abfd) != amt)
285 if (info->dynsym != NULL)
287 bfd_release (abfd, info->dynsym);
294 /* Get the dynamic strings. */
295 if (info->dynstr == NULL)
297 amt = info->dyninfo.ld_symb_size;
298 info->dynstr = bfd_alloc (abfd, amt);
299 if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0)
301 if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_symbols, SEEK_SET) != 0
302 || bfd_bread ((void *) info->dynstr, amt, abfd) != amt)
304 if (info->dynstr != NULL)
306 bfd_release (abfd, info->dynstr);
316 /* Read in the dynamic symbols. */
319 sunos_canonicalize_dynamic_symtab (bfd *abfd, asymbol **storage)
321 struct sunos_dynamic_info *info;
324 if (! sunos_slurp_dynamic_symtab (abfd))
327 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
329 #ifdef CHECK_DYNAMIC_HASH
330 /* Check my understanding of the dynamic hash table by making sure
331 that each symbol can be located in the hash table. */
333 bfd_size_type table_size;
337 if (info->dyninfo.ld_buckets > info->dynsym_count)
339 table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash;
340 table = bfd_malloc (table_size);
341 if (table == NULL && table_size != 0)
343 if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_hash, SEEK_SET) != 0
344 || bfd_bread ((void *) table, table_size, abfd) != table_size)
346 for (i = 0; i < info->dynsym_count; i++)
351 name = ((unsigned char *) info->dynstr
352 + GET_WORD (abfd, info->dynsym[i].e_strx));
354 while (*name != '\0')
355 hash = (hash << 1) + *name++;
357 hash %= info->dyninfo.ld_buckets;
358 while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i)
360 hash = GET_WORD (abfd,
361 table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD);
362 if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE)
368 #endif /* CHECK_DYNAMIC_HASH */
370 /* Get the asymbol structures corresponding to the dynamic nlist
372 if (info->canonical_dynsym == NULL)
375 bfd_size_type strsize = info->dyninfo.ld_symb_size;
377 size = (bfd_size_type) info->dynsym_count * sizeof (aout_symbol_type);
378 info->canonical_dynsym = bfd_alloc (abfd, size);
379 if (info->canonical_dynsym == NULL && info->dynsym_count != 0)
382 if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym,
384 (bfd_size_type) info->dynsym_count,
385 info->dynstr, strsize, TRUE))
387 if (info->canonical_dynsym != NULL)
389 bfd_release (abfd, info->canonical_dynsym);
390 info->canonical_dynsym = NULL;
396 /* Return pointers to the dynamic asymbol structures. */
397 for (i = 0; i < info->dynsym_count; i++)
398 *storage++ = (asymbol *) (info->canonical_dynsym + i);
401 return info->dynsym_count;
404 /* Return the amount of memory required for the dynamic relocs. */
407 sunos_get_dynamic_reloc_upper_bound (bfd *abfd)
409 struct sunos_dynamic_info *info;
411 if (! sunos_read_dynamic_info (abfd))
414 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
417 bfd_set_error (bfd_error_no_symbols);
421 return (info->dynrel_count + 1) * sizeof (arelent *);
424 /* Read in the dynamic relocs. */
427 sunos_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage, asymbol **syms)
429 struct sunos_dynamic_info *info;
433 /* Get the general dynamic information. */
434 if (obj_aout_dynamic_info (abfd) == NULL)
436 if (! sunos_read_dynamic_info (abfd))
440 info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
443 bfd_set_error (bfd_error_no_symbols);
447 /* Get the dynamic reloc information. */
448 if (info->dynrel == NULL)
450 size = (bfd_size_type) info->dynrel_count * obj_reloc_entry_size (abfd);
451 info->dynrel = bfd_alloc (abfd, size);
452 if (info->dynrel == NULL && size != 0)
454 if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_rel, SEEK_SET) != 0
455 || bfd_bread ((void *) info->dynrel, size, abfd) != size)
457 if (info->dynrel != NULL)
459 bfd_release (abfd, info->dynrel);
466 /* Get the arelent structures corresponding to the dynamic reloc
468 if (info->canonical_dynrel == NULL)
472 size = (bfd_size_type) info->dynrel_count * sizeof (arelent);
473 info->canonical_dynrel = bfd_alloc (abfd, size);
474 if (info->canonical_dynrel == NULL && info->dynrel_count != 0)
477 to = info->canonical_dynrel;
479 if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
481 struct reloc_ext_external *p;
482 struct reloc_ext_external *pend;
484 p = (struct reloc_ext_external *) info->dynrel;
485 pend = p + info->dynrel_count;
486 for (; p < pend; p++, to++)
487 NAME (aout, swap_ext_reloc_in) (abfd, p, to, syms,
488 (bfd_size_type) info->dynsym_count);
492 struct reloc_std_external *p;
493 struct reloc_std_external *pend;
495 p = (struct reloc_std_external *) info->dynrel;
496 pend = p + info->dynrel_count;
497 for (; p < pend; p++, to++)
498 NAME (aout, swap_std_reloc_in) (abfd, p, to, syms,
499 (bfd_size_type) info->dynsym_count);
503 /* Return pointers to the dynamic arelent structures. */
504 for (i = 0; i < info->dynrel_count; i++)
505 *storage++ = info->canonical_dynrel + i;
508 return info->dynrel_count;
511 /* Code to handle linking of SunOS shared libraries. */
513 /* A SPARC procedure linkage table entry is 12 bytes. The first entry
514 in the table is a jump which is filled in by the runtime linker.
515 The remaining entries are branches back to the first entry,
516 followed by an index into the relocation table encoded to look like
519 #define SPARC_PLT_ENTRY_SIZE (12)
521 static const bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] =
523 /* sethi %hi(0),%g1; address filled in by runtime linker. */
525 /* jmp %g1; offset filled in by runtime linker. */
531 /* save %sp, -96, %sp */
532 #define SPARC_PLT_ENTRY_WORD0 ((bfd_vma) 0x9de3bfa0)
533 /* call; address filled in later. */
534 #define SPARC_PLT_ENTRY_WORD1 ((bfd_vma) 0x40000000)
535 /* sethi; reloc index filled in later. */
536 #define SPARC_PLT_ENTRY_WORD2 ((bfd_vma) 0x01000000)
538 /* This sequence is used when for the jump table entry to a defined
539 symbol in a complete executable. It is used when linking PIC
540 compiled code which is not being put into a shared library. */
541 /* sethi <address to be filled in later>, %g1 */
542 #define SPARC_PLT_PIC_WORD0 ((bfd_vma) 0x03000000)
543 /* jmp %g1 + <address to be filled in later> */
544 #define SPARC_PLT_PIC_WORD1 ((bfd_vma) 0x81c06000)
546 #define SPARC_PLT_PIC_WORD2 ((bfd_vma) 0x01000000)
548 /* An m68k procedure linkage table entry is 8 bytes. The first entry
549 in the table is a jump which is filled in the by the runtime
550 linker. The remaining entries are branches back to the first
551 entry, followed by a two byte index into the relocation table. */
553 #define M68K_PLT_ENTRY_SIZE (8)
555 static const bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] =
559 /* Filled in by runtime linker with a magic address. */
566 #define M68K_PLT_ENTRY_WORD0 ((bfd_vma) 0x61ff)
567 /* Remaining words filled in later. */
569 /* An entry in the SunOS linker hash table. */
571 struct sunos_link_hash_entry
573 struct aout_link_hash_entry root;
575 /* If this is a dynamic symbol, this is its index into the dynamic
576 symbol table. This is initialized to -1. As the linker looks at
577 the input files, it changes this to -2 if it will be added to the
578 dynamic symbol table. After all the input files have been seen,
579 the linker will know whether to build a dynamic symbol table; if
580 it does build one, this becomes the index into the table. */
583 /* If this is a dynamic symbol, this is the index of the name in the
584 dynamic symbol string table. */
587 /* The offset into the global offset table used for this symbol. If
588 the symbol does not require a GOT entry, this is 0. */
591 /* The offset into the procedure linkage table used for this symbol.
592 If the symbol does not require a PLT entry, this is 0. */
595 /* Some linker flags. */
597 /* Symbol is referenced by a regular object. */
598 #define SUNOS_REF_REGULAR 01
599 /* Symbol is defined by a regular object. */
600 #define SUNOS_DEF_REGULAR 02
601 /* Symbol is referenced by a dynamic object. */
602 #define SUNOS_REF_DYNAMIC 04
603 /* Symbol is defined by a dynamic object. */
604 #define SUNOS_DEF_DYNAMIC 010
605 /* Symbol is a constructor symbol in a regular object. */
606 #define SUNOS_CONSTRUCTOR 020
609 /* The SunOS linker hash table. */
611 struct sunos_link_hash_table
613 struct aout_link_hash_table root;
615 /* The object which holds the dynamic sections. */
618 /* Whether we have created the dynamic sections. */
619 bfd_boolean dynamic_sections_created;
621 /* Whether we need the dynamic sections. */
622 bfd_boolean dynamic_sections_needed;
624 /* Whether we need the .got table. */
625 bfd_boolean got_needed;
627 /* The number of dynamic symbols. */
630 /* The number of buckets in the hash table. */
633 /* The list of dynamic objects needed by dynamic objects included in
635 struct bfd_link_needed_list *needed;
637 /* The offset of __GLOBAL_OFFSET_TABLE_ into the .got section. */
641 /* Routine to create an entry in an SunOS link hash table. */
643 static struct bfd_hash_entry *
644 sunos_link_hash_newfunc (struct bfd_hash_entry *entry,
645 struct bfd_hash_table *table,
648 struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry;
650 /* Allocate the structure if it has not already been allocated by a
653 ret = bfd_hash_allocate (table, sizeof (* ret));
657 /* Call the allocation method of the superclass. */
658 ret = ((struct sunos_link_hash_entry *)
659 NAME (aout, link_hash_newfunc) ((struct bfd_hash_entry *) ret,
663 /* Set local fields. */
665 ret->dynstr_index = -1;
671 return (struct bfd_hash_entry *) ret;
674 /* Create a SunOS link hash table. */
676 static struct bfd_link_hash_table *
677 sunos_link_hash_table_create (bfd *abfd)
679 struct sunos_link_hash_table *ret;
680 bfd_size_type amt = sizeof (struct sunos_link_hash_table);
682 ret = bfd_malloc (amt);
685 if (!NAME (aout, link_hash_table_init) (&ret->root, abfd,
686 sunos_link_hash_newfunc,
687 sizeof (struct sunos_link_hash_entry)))
694 ret->dynamic_sections_created = FALSE;
695 ret->dynamic_sections_needed = FALSE;
696 ret->got_needed = FALSE;
697 ret->dynsymcount = 0;
698 ret->bucketcount = 0;
702 return &ret->root.root;
705 /* Look up an entry in an SunOS link hash table. */
707 #define sunos_link_hash_lookup(table, string, create, copy, follow) \
708 ((struct sunos_link_hash_entry *) \
709 aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\
712 /* Traverse a SunOS link hash table. */
714 #define sunos_link_hash_traverse(table, func, info) \
715 (aout_link_hash_traverse \
717 (bfd_boolean (*) (struct aout_link_hash_entry *, void *)) (func), \
720 /* Get the SunOS link hash table from the info structure. This is
723 #define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash))
725 /* Create the dynamic sections needed if we are linking against a
726 dynamic object, or if we are linking PIC compiled code. ABFD is a
727 bfd we can attach the dynamic sections to. The linker script will
728 look for these special sections names and put them in the right
729 place in the output file. See include/aout/sun4.h for more details
730 of the dynamic linking information. */
733 sunos_create_dynamic_sections (bfd *abfd,
734 struct bfd_link_info *info,
739 if (! sunos_hash_table (info)->dynamic_sections_created)
743 sunos_hash_table (info)->dynobj = abfd;
745 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
746 | SEC_LINKER_CREATED);
748 /* The .dynamic section holds the basic dynamic information: the
749 sun4_dynamic structure, the dynamic debugger information, and
750 the sun4_dynamic_link structure. */
751 s = bfd_make_section_anyway_with_flags (abfd, ".dynamic", flags);
753 || ! bfd_set_section_alignment (abfd, s, 2))
756 /* The .got section holds the global offset table. The address
757 is put in the ld_got field. */
758 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
760 || ! bfd_set_section_alignment (abfd, s, 2))
763 /* The .plt section holds the procedure linkage table. The
764 address is put in the ld_plt field. */
765 s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags | SEC_CODE);
767 || ! bfd_set_section_alignment (abfd, s, 2))
770 /* The .dynrel section holds the dynamic relocs. The address is
771 put in the ld_rel field. */
772 s = bfd_make_section_anyway_with_flags (abfd, ".dynrel",
773 flags | SEC_READONLY);
775 || ! bfd_set_section_alignment (abfd, s, 2))
778 /* The .hash section holds the dynamic hash table. The address
779 is put in the ld_hash field. */
780 s = bfd_make_section_anyway_with_flags (abfd, ".hash",
781 flags | SEC_READONLY);
783 || ! bfd_set_section_alignment (abfd, s, 2))
786 /* The .dynsym section holds the dynamic symbols. The address
787 is put in the ld_stab field. */
788 s = bfd_make_section_anyway_with_flags (abfd, ".dynsym",
789 flags | SEC_READONLY);
791 || ! bfd_set_section_alignment (abfd, s, 2))
794 /* The .dynstr section holds the dynamic symbol string table.
795 The address is put in the ld_symbols field. */
796 s = bfd_make_section_anyway_with_flags (abfd, ".dynstr",
797 flags | SEC_READONLY);
799 || ! bfd_set_section_alignment (abfd, s, 2))
802 sunos_hash_table (info)->dynamic_sections_created = TRUE;
805 if ((needed && ! sunos_hash_table (info)->dynamic_sections_needed)
810 dynobj = sunos_hash_table (info)->dynobj;
812 s = bfd_get_linker_section (dynobj, ".got");
814 s->size = BYTES_IN_WORD;
816 sunos_hash_table (info)->dynamic_sections_needed = TRUE;
817 sunos_hash_table (info)->got_needed = TRUE;
823 /* Add dynamic symbols during a link. This is called by the a.out
824 backend linker for each object it encounters. */
827 sunos_add_dynamic_symbols (bfd *abfd,
828 struct bfd_link_info *info,
829 struct external_nlist **symsp,
830 bfd_size_type *sym_countp,
834 struct sunos_dynamic_info *dinfo;
837 /* Make sure we have all the required sections. */
838 if (info->output_bfd->xvec == abfd->xvec)
840 if (! sunos_create_dynamic_sections (abfd, info,
841 ((abfd->flags & DYNAMIC) != 0
842 && !info->relocatable)))
846 /* There is nothing else to do for a normal object. */
847 if ((abfd->flags & DYNAMIC) == 0)
850 dynobj = sunos_hash_table (info)->dynobj;
852 /* We do not want to include the sections in a dynamic object in the
853 output file. We hack by simply clobbering the list of sections
854 in the BFD. This could be handled more cleanly by, say, a new
855 section flag; the existing SEC_NEVER_LOAD flag is not the one we
856 want, because that one still implies that the section takes up
857 space in the output file. If this is the first object we have
858 seen, we must preserve the dynamic sections we just created. */
860 abfd->sections = NULL;
865 for (s = abfd->sections; s != NULL; s = s->next)
867 if ((s->flags & SEC_LINKER_CREATED) == 0)
868 bfd_section_list_remove (abfd, s);
872 /* The native linker seems to just ignore dynamic objects when -r is
874 if (info->relocatable)
877 /* There's no hope of using a dynamic object which does not exactly
878 match the format of the output file. */
879 if (info->output_bfd->xvec != abfd->xvec)
881 bfd_set_error (bfd_error_invalid_operation);
885 /* Make sure we have a .need and a .rules sections. These are only
886 needed if there really is a dynamic object in the link, so they
887 are not added by sunos_create_dynamic_sections. */
888 if (bfd_get_section_by_name (dynobj, ".need") == NULL)
890 /* The .need section holds the list of names of shared objets
891 which must be included at runtime. The address of this
892 section is put in the ld_need field. */
893 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
894 | SEC_IN_MEMORY | SEC_READONLY);
895 asection *s = bfd_make_section_with_flags (dynobj, ".need", flags);
897 || ! bfd_set_section_alignment (dynobj, s, 2))
901 if (bfd_get_section_by_name (dynobj, ".rules") == NULL)
903 /* The .rules section holds the path to search for shared
904 objects. The address of this section is put in the ld_rules
906 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
907 | SEC_IN_MEMORY | SEC_READONLY);
908 asection *s = bfd_make_section_with_flags (dynobj, ".rules", flags);
910 || ! bfd_set_section_alignment (dynobj, s, 2))
914 /* Pick up the dynamic symbols and return them to the caller. */
915 if (! sunos_slurp_dynamic_symtab (abfd))
918 dinfo = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
919 *symsp = dinfo->dynsym;
920 *sym_countp = dinfo->dynsym_count;
921 *stringsp = dinfo->dynstr;
923 /* Record information about any other objects needed by this one. */
924 need = dinfo->dyninfo.ld_need;
928 unsigned long name, flags;
929 unsigned short major_vno, minor_vno;
930 struct bfd_link_needed_list *needed, **pp;
936 if (bfd_seek (abfd, (file_ptr) need, SEEK_SET) != 0
937 || bfd_bread (buf, (bfd_size_type) 16, abfd) != 16)
940 /* For the format of an ld_need entry, see aout/sun4.h. We
941 should probably define structs for this manipulation. */
942 name = bfd_get_32 (abfd, buf);
943 flags = bfd_get_32 (abfd, buf + 4);
944 major_vno = (unsigned short) bfd_get_16 (abfd, buf + 8);
945 minor_vno = (unsigned short) bfd_get_16 (abfd, buf + 10);
946 need = bfd_get_32 (abfd, buf + 12);
948 alc = sizeof (struct bfd_link_needed_list);
949 needed = bfd_alloc (abfd, alc);
954 /* We return the name as [-l]name[.maj][.min]. */
956 namebuf = bfd_malloc (alc + 1);
961 if ((flags & 0x80000000) != 0)
966 if (bfd_seek (abfd, (file_ptr) name, SEEK_SET) != 0)
974 if (bfd_bread (&b, (bfd_size_type) 1, abfd) != 1)
980 if ((bfd_size_type) (p - namebuf) >= alc)
985 n = bfd_realloc (namebuf, alc + 1);
991 p = n + (p - namebuf);
1006 sprintf (majbuf, ".%d", major_vno);
1010 sprintf (minbuf, ".%d", minor_vno);
1012 if ((p - namebuf) + strlen (majbuf) + strlen (minbuf) >= alc)
1016 alc = (p - namebuf) + strlen (majbuf) + strlen (minbuf);
1017 n = bfd_realloc (namebuf, alc + 1);
1023 p = n + (p - namebuf);
1031 namecopy = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1);
1032 if (namecopy == NULL)
1037 strcpy (namecopy, namebuf);
1039 needed->name = namecopy;
1041 needed->next = NULL;
1043 for (pp = &sunos_hash_table (info)->needed;
1053 /* Function to add a single symbol to the linker hash table. This is
1054 a wrapper around _bfd_generic_link_add_one_symbol which handles the
1055 tweaking needed for dynamic linking support. */
1058 sunos_add_one_symbol (struct bfd_link_info *info,
1066 bfd_boolean collect,
1067 struct bfd_link_hash_entry **hashp)
1069 struct sunos_link_hash_entry *h;
1072 if ((flags & (BSF_INDIRECT | BSF_WARNING | BSF_CONSTRUCTOR)) != 0
1073 || ! bfd_is_und_section (section))
1074 h = sunos_link_hash_lookup (sunos_hash_table (info), name, TRUE, copy,
1077 h = ((struct sunos_link_hash_entry *)
1078 bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE));
1083 *hashp = (struct bfd_link_hash_entry *) h;
1085 /* Treat a common symbol in a dynamic object as defined in the .bss
1086 section of the dynamic object. We don't want to allocate space
1087 for it in our process image. */
1088 if ((abfd->flags & DYNAMIC) != 0
1089 && bfd_is_com_section (section))
1090 section = obj_bsssec (abfd);
1092 if (! bfd_is_und_section (section)
1093 && h->root.root.type != bfd_link_hash_new
1094 && h->root.root.type != bfd_link_hash_undefined
1095 && h->root.root.type != bfd_link_hash_defweak)
1097 /* We are defining the symbol, and it is already defined. This
1098 is a potential multiple definition error. */
1099 if ((abfd->flags & DYNAMIC) != 0)
1101 /* The definition we are adding is from a dynamic object.
1102 We do not want this new definition to override the
1103 existing definition, so we pretend it is just a
1105 section = bfd_und_section_ptr;
1107 else if (h->root.root.type == bfd_link_hash_defined
1108 && h->root.root.u.def.section->owner != NULL
1109 && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
1111 /* The existing definition is from a dynamic object. We
1112 want to override it with the definition we just found.
1113 Clobber the existing definition. */
1114 h->root.root.type = bfd_link_hash_undefined;
1115 h->root.root.u.undef.abfd = h->root.root.u.def.section->owner;
1117 else if (h->root.root.type == bfd_link_hash_common
1118 && (h->root.root.u.c.p->section->owner->flags & DYNAMIC) != 0)
1120 /* The existing definition is from a dynamic object. We
1121 want to override it with the definition we just found.
1122 Clobber the existing definition. We can't set it to new,
1123 because it is on the undefined list. */
1124 h->root.root.type = bfd_link_hash_undefined;
1125 h->root.root.u.undef.abfd = h->root.root.u.c.p->section->owner;
1129 if ((abfd->flags & DYNAMIC) != 0
1130 && abfd->xvec == info->output_bfd->xvec
1131 && (h->flags & SUNOS_CONSTRUCTOR) != 0)
1132 /* The existing symbol is a constructor symbol, and this symbol
1133 is from a dynamic object. A constructor symbol is actually a
1134 definition, although the type will be bfd_link_hash_undefined
1135 at this point. We want to ignore the definition from the
1137 section = bfd_und_section_ptr;
1138 else if ((flags & BSF_CONSTRUCTOR) != 0
1139 && (abfd->flags & DYNAMIC) == 0
1140 && h->root.root.type == bfd_link_hash_defined
1141 && h->root.root.u.def.section->owner != NULL
1142 && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
1143 /* The existing symbol is defined by a dynamic object, and this
1144 is a constructor symbol. As above, we want to force the use
1145 of the constructor symbol from the regular object. */
1146 h->root.root.type = bfd_link_hash_new;
1148 /* Do the usual procedure for adding a symbol. */
1149 if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section,
1150 value, string, copy, collect,
1154 if (abfd->xvec == info->output_bfd->xvec)
1156 /* Set a flag in the hash table entry indicating the type of
1157 reference or definition we just found. Keep a count of the
1158 number of dynamic symbols we find. A dynamic symbol is one
1159 which is referenced or defined by both a regular object and a
1161 if ((abfd->flags & DYNAMIC) == 0)
1163 if (bfd_is_und_section (section))
1164 new_flag = SUNOS_REF_REGULAR;
1166 new_flag = SUNOS_DEF_REGULAR;
1170 if (bfd_is_und_section (section))
1171 new_flag = SUNOS_REF_DYNAMIC;
1173 new_flag = SUNOS_DEF_DYNAMIC;
1175 h->flags |= new_flag;
1177 if (h->dynindx == -1
1178 && (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0)
1180 ++sunos_hash_table (info)->dynsymcount;
1184 if ((flags & BSF_CONSTRUCTOR) != 0
1185 && (abfd->flags & DYNAMIC) == 0)
1186 h->flags |= SUNOS_CONSTRUCTOR;
1192 extern const bfd_target MY (vec);
1194 /* Return the list of objects needed by BFD. */
1196 struct bfd_link_needed_list *
1197 bfd_sunos_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED,
1198 struct bfd_link_info *info)
1200 if (info->output_bfd->xvec != &MY (vec))
1202 return sunos_hash_table (info)->needed;
1205 /* Record an assignment made to a symbol by a linker script. We need
1206 this in case some dynamic object refers to this symbol. */
1209 bfd_sunos_record_link_assignment (bfd *output_bfd,
1210 struct bfd_link_info *info,
1213 struct sunos_link_hash_entry *h;
1215 if (output_bfd->xvec != &MY(vec))
1218 /* This is called after we have examined all the input objects. If
1219 the symbol does not exist, it merely means that no object refers
1220 to it, and we can just ignore it at this point. */
1221 h = sunos_link_hash_lookup (sunos_hash_table (info), name,
1222 FALSE, FALSE, FALSE);
1226 /* In a shared library, the __DYNAMIC symbol does not appear in the
1227 dynamic symbol table. */
1228 if (! info->shared || strcmp (name, "__DYNAMIC") != 0)
1230 h->flags |= SUNOS_DEF_REGULAR;
1232 if (h->dynindx == -1)
1234 ++sunos_hash_table (info)->dynsymcount;
1242 /* Scan the relocs for an input section using standard relocs. We
1243 need to figure out what to do for each reloc against a dynamic
1244 symbol. If the symbol is in the .text section, an entry is made in
1245 the procedure linkage table. Note that this will do the wrong
1246 thing if the symbol is actually data; I don't think the Sun 3
1247 native linker handles this case correctly either. If the symbol is
1248 not in the .text section, we must preserve the reloc as a dynamic
1249 reloc. FIXME: We should also handle the PIC relocs here by
1250 building global offset table entries. */
1253 sunos_scan_std_relocs (struct bfd_link_info *info,
1255 asection *sec ATTRIBUTE_UNUSED,
1256 const struct reloc_std_external *relocs,
1257 bfd_size_type rel_size)
1260 asection *splt = NULL;
1261 asection *srel = NULL;
1262 struct sunos_link_hash_entry **sym_hashes;
1263 const struct reloc_std_external *rel, *relend;
1265 /* We only know how to handle m68k plt entries. */
1266 if (bfd_get_arch (abfd) != bfd_arch_m68k)
1268 bfd_set_error (bfd_error_invalid_target);
1274 sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd);
1276 relend = relocs + rel_size / RELOC_STD_SIZE;
1277 for (rel = relocs; rel < relend; rel++)
1280 struct sunos_link_hash_entry *h;
1282 /* We only want relocs against external symbols. */
1283 if (bfd_header_big_endian (abfd))
1285 if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0)
1290 if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0)
1294 /* Get the symbol index. */
1295 if (bfd_header_big_endian (abfd))
1296 r_index = ((rel->r_index[0] << 16)
1297 | (rel->r_index[1] << 8)
1300 r_index = ((rel->r_index[2] << 16)
1301 | (rel->r_index[1] << 8)
1304 /* Get the hash table entry. */
1305 h = sym_hashes[r_index];
1307 /* This should not normally happen, but it will in any case
1308 be caught in the relocation phase. */
1311 /* At this point common symbols have already been allocated, so
1312 we don't have to worry about them. We need to consider that
1313 we may have already seen this symbol and marked it undefined;
1314 if the symbol is really undefined, then SUNOS_DEF_DYNAMIC
1316 if (h->root.root.type != bfd_link_hash_defined
1317 && h->root.root.type != bfd_link_hash_defweak
1318 && h->root.root.type != bfd_link_hash_undefined)
1321 if ((h->flags & SUNOS_DEF_DYNAMIC) == 0
1322 || (h->flags & SUNOS_DEF_REGULAR) != 0)
1329 if (! sunos_create_dynamic_sections (abfd, info, FALSE))
1331 dynobj = sunos_hash_table (info)->dynobj;
1332 splt = bfd_get_linker_section (dynobj, ".plt");
1333 srel = bfd_get_linker_section (dynobj, ".dynrel");
1334 BFD_ASSERT (splt != NULL && srel != NULL);
1336 sgot = bfd_get_linker_section (dynobj, ".got");
1337 BFD_ASSERT (sgot != NULL);
1338 if (sgot->size == 0)
1339 sgot->size = BYTES_IN_WORD;
1340 sunos_hash_table (info)->got_needed = TRUE;
1343 BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0);
1344 BFD_ASSERT (h->plt_offset != 0
1345 || ((h->root.root.type == bfd_link_hash_defined
1346 || h->root.root.type == bfd_link_hash_defweak)
1347 ? (h->root.root.u.def.section->owner->flags
1349 : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0));
1351 /* This reloc is against a symbol defined only by a dynamic
1353 if (h->root.root.type == bfd_link_hash_undefined)
1354 /* Presumably this symbol was marked as being undefined by
1355 an earlier reloc. */
1356 srel->size += RELOC_STD_SIZE;
1357 else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0)
1361 /* This reloc is not in the .text section. It must be
1362 copied into the dynamic relocs. We mark the symbol as
1364 srel->size += RELOC_STD_SIZE;
1365 sub = h->root.root.u.def.section->owner;
1366 h->root.root.type = bfd_link_hash_undefined;
1367 h->root.root.u.undef.abfd = sub;
1371 /* This symbol is in the .text section. We must give it an
1372 entry in the procedure linkage table, if we have not
1373 already done so. We change the definition of the symbol
1374 to the .plt section; this will cause relocs against it to
1375 be handled correctly. */
1376 if (h->plt_offset == 0)
1378 if (splt->size == 0)
1379 splt->size = M68K_PLT_ENTRY_SIZE;
1380 h->plt_offset = splt->size;
1382 if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1384 h->root.root.u.def.section = splt;
1385 h->root.root.u.def.value = splt->size;
1388 splt->size += M68K_PLT_ENTRY_SIZE;
1390 /* We may also need a dynamic reloc entry. */
1391 if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1392 srel->size += RELOC_STD_SIZE;
1400 /* Scan the relocs for an input section using extended relocs. We
1401 need to figure out what to do for each reloc against a dynamic
1402 symbol. If the reloc is a WDISP30, and the symbol is in the .text
1403 section, an entry is made in the procedure linkage table.
1404 Otherwise, we must preserve the reloc as a dynamic reloc. */
1407 sunos_scan_ext_relocs (struct bfd_link_info *info,
1409 asection *sec ATTRIBUTE_UNUSED,
1410 const struct reloc_ext_external *relocs,
1411 bfd_size_type rel_size)
1414 struct sunos_link_hash_entry **sym_hashes;
1415 const struct reloc_ext_external *rel, *relend;
1416 asection *splt = NULL;
1417 asection *sgot = NULL;
1418 asection *srel = NULL;
1421 /* We only know how to handle SPARC plt entries. */
1422 if (bfd_get_arch (abfd) != bfd_arch_sparc)
1424 bfd_set_error (bfd_error_invalid_target);
1430 sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd);
1432 relend = relocs + rel_size / RELOC_EXT_SIZE;
1433 for (rel = relocs; rel < relend; rel++)
1435 unsigned int r_index;
1438 struct sunos_link_hash_entry *h = NULL;
1440 /* Swap in the reloc information. */
1441 if (bfd_header_big_endian (abfd))
1443 r_index = ((rel->r_index[0] << 16)
1444 | (rel->r_index[1] << 8)
1446 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
1447 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
1448 >> RELOC_EXT_BITS_TYPE_SH_BIG);
1452 r_index = ((rel->r_index[2] << 16)
1453 | (rel->r_index[1] << 8)
1455 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
1456 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
1457 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
1462 h = sym_hashes[r_index];
1465 /* This should not normally happen, but it will in any
1466 case be caught in the relocation phase. */
1471 /* If this is a base relative reloc, we need to make an entry in
1472 the .got section. */
1473 if (r_type == RELOC_BASE10
1474 || r_type == RELOC_BASE13
1475 || r_type == RELOC_BASE22)
1479 if (! sunos_create_dynamic_sections (abfd, info, FALSE))
1481 dynobj = sunos_hash_table (info)->dynobj;
1482 splt = bfd_get_linker_section (dynobj, ".plt");
1483 sgot = bfd_get_linker_section (dynobj, ".got");
1484 srel = bfd_get_linker_section (dynobj, ".dynrel");
1485 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1487 /* Make sure we have an initial entry in the .got table. */
1488 if (sgot->size == 0)
1489 sgot->size = BYTES_IN_WORD;
1490 sunos_hash_table (info)->got_needed = TRUE;
1495 if (h->got_offset != 0)
1498 h->got_offset = sgot->size;
1502 if (r_index >= bfd_get_symcount (abfd))
1503 /* This is abnormal, but should be caught in the
1504 relocation phase. */
1507 if (adata (abfd).local_got_offsets == NULL)
1509 amt = bfd_get_symcount (abfd);
1510 amt *= sizeof (bfd_vma);
1511 adata (abfd).local_got_offsets = bfd_zalloc (abfd, amt);
1512 if (adata (abfd).local_got_offsets == NULL)
1516 if (adata (abfd).local_got_offsets[r_index] != 0)
1519 adata (abfd).local_got_offsets[r_index] = sgot->size;
1522 sgot->size += BYTES_IN_WORD;
1524 /* If we are making a shared library, or if the symbol is
1525 defined by a dynamic object, we will need a dynamic reloc
1529 && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1530 && (h->flags & SUNOS_DEF_REGULAR) == 0))
1531 srel->size += RELOC_EXT_SIZE;
1536 /* Otherwise, we are only interested in relocs against symbols
1537 defined in dynamic objects but not in regular objects. We
1538 only need to consider relocs against external symbols. */
1541 /* But, if we are creating a shared library, we need to
1542 generate an absolute reloc. */
1547 if (! sunos_create_dynamic_sections (abfd, info, TRUE))
1549 dynobj = sunos_hash_table (info)->dynobj;
1550 splt = bfd_get_linker_section (dynobj, ".plt");
1551 sgot = bfd_get_linker_section (dynobj, ".got");
1552 srel = bfd_get_linker_section (dynobj, ".dynrel");
1553 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1556 srel->size += RELOC_EXT_SIZE;
1562 /* At this point common symbols have already been allocated, so
1563 we don't have to worry about them. We need to consider that
1564 we may have already seen this symbol and marked it undefined;
1565 if the symbol is really undefined, then SUNOS_DEF_DYNAMIC
1567 if (h->root.root.type != bfd_link_hash_defined
1568 && h->root.root.type != bfd_link_hash_defweak
1569 && h->root.root.type != bfd_link_hash_undefined)
1572 if (r_type != RELOC_JMP_TBL
1574 && ((h->flags & SUNOS_DEF_DYNAMIC) == 0
1575 || (h->flags & SUNOS_DEF_REGULAR) != 0))
1578 if (r_type == RELOC_JMP_TBL
1580 && (h->flags & SUNOS_DEF_DYNAMIC) == 0
1581 && (h->flags & SUNOS_DEF_REGULAR) == 0)
1583 /* This symbol is apparently undefined. Don't do anything
1584 here; just let the relocation routine report an undefined
1589 if (strcmp (h->root.root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
1594 if (! sunos_create_dynamic_sections (abfd, info, FALSE))
1596 dynobj = sunos_hash_table (info)->dynobj;
1597 splt = bfd_get_linker_section (dynobj, ".plt");
1598 sgot = bfd_get_linker_section (dynobj, ".got");
1599 srel = bfd_get_linker_section (dynobj, ".dynrel");
1600 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
1602 /* Make sure we have an initial entry in the .got table. */
1603 if (sgot->size == 0)
1604 sgot->size = BYTES_IN_WORD;
1605 sunos_hash_table (info)->got_needed = TRUE;
1608 BFD_ASSERT (r_type == RELOC_JMP_TBL
1610 || (h->flags & SUNOS_REF_REGULAR) != 0);
1611 BFD_ASSERT (r_type == RELOC_JMP_TBL
1613 || h->plt_offset != 0
1614 || ((h->root.root.type == bfd_link_hash_defined
1615 || h->root.root.type == bfd_link_hash_defweak)
1616 ? (h->root.root.u.def.section->owner->flags
1618 : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0));
1620 /* This reloc is against a symbol defined only by a dynamic
1621 object, or it is a jump table reloc from PIC compiled code. */
1623 if (r_type != RELOC_JMP_TBL
1624 && h->root.root.type == bfd_link_hash_undefined)
1625 /* Presumably this symbol was marked as being undefined by
1626 an earlier reloc. */
1627 srel->size += RELOC_EXT_SIZE;
1629 else if (r_type != RELOC_JMP_TBL
1630 && (h->root.root.u.def.section->flags & SEC_CODE) == 0)
1634 /* This reloc is not in the .text section. It must be
1635 copied into the dynamic relocs. We mark the symbol as
1637 srel->size += RELOC_EXT_SIZE;
1638 if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1640 sub = h->root.root.u.def.section->owner;
1641 h->root.root.type = bfd_link_hash_undefined;
1642 h->root.root.u.undef.abfd = sub;
1647 /* This symbol is in the .text section. We must give it an
1648 entry in the procedure linkage table, if we have not
1649 already done so. We change the definition of the symbol
1650 to the .plt section; this will cause relocs against it to
1651 be handled correctly. */
1652 if (h->plt_offset == 0)
1654 if (splt->size == 0)
1655 splt->size = SPARC_PLT_ENTRY_SIZE;
1656 h->plt_offset = splt->size;
1658 if ((h->flags & SUNOS_DEF_REGULAR) == 0)
1660 if (h->root.root.type == bfd_link_hash_undefined)
1661 h->root.root.type = bfd_link_hash_defined;
1662 h->root.root.u.def.section = splt;
1663 h->root.root.u.def.value = splt->size;
1666 splt->size += SPARC_PLT_ENTRY_SIZE;
1668 /* We will also need a dynamic reloc entry, unless this
1669 is a JMP_TBL reloc produced by linking PIC compiled
1670 code, and we are not making a shared library. */
1671 if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
1672 srel->size += RELOC_EXT_SIZE;
1675 /* If we are creating a shared library, we need to copy over
1676 any reloc other than a jump table reloc. */
1677 if (info->shared && r_type != RELOC_JMP_TBL)
1678 srel->size += RELOC_EXT_SIZE;
1685 /* Scan the relocs for an input section. */
1688 sunos_scan_relocs (struct bfd_link_info *info,
1691 bfd_size_type rel_size)
1694 void * free_relocs = NULL;
1699 if (! info->keep_memory)
1700 relocs = free_relocs = bfd_malloc (rel_size);
1703 struct aout_section_data_struct *n;
1704 bfd_size_type amt = sizeof (struct aout_section_data_struct);
1706 n = bfd_alloc (abfd, amt);
1711 set_aout_section_data (sec, n);
1712 relocs = bfd_malloc (rel_size);
1713 aout_section_data (sec)->relocs = relocs;
1719 if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
1720 || bfd_bread (relocs, rel_size, abfd) != rel_size)
1723 if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE)
1725 if (! sunos_scan_std_relocs (info, abfd, sec,
1726 (struct reloc_std_external *) relocs,
1732 if (! sunos_scan_ext_relocs (info, abfd, sec,
1733 (struct reloc_ext_external *) relocs,
1738 if (free_relocs != NULL)
1744 if (free_relocs != NULL)
1749 /* Build the hash table of dynamic symbols, and to mark as written all
1750 symbols from dynamic objects which we do not plan to write out. */
1753 sunos_scan_dynamic_symbol (struct sunos_link_hash_entry *h, void * data)
1755 struct bfd_link_info *info = (struct bfd_link_info *) data;
1757 /* Set the written flag for symbols we do not want to write out as
1758 part of the regular symbol table. This is all symbols which are
1759 not defined in a regular object file. For some reason symbols
1760 which are referenced by a regular object and defined by a dynamic
1761 object do not seem to show up in the regular symbol table. It is
1762 possible for a symbol to have only SUNOS_REF_REGULAR set here, it
1763 is an undefined symbol which was turned into a common symbol
1764 because it was found in an archive object which was not included
1766 if ((h->flags & SUNOS_DEF_REGULAR) == 0
1767 && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1768 && strcmp (h->root.root.root.string, "__DYNAMIC") != 0)
1769 h->root.written = TRUE;
1771 /* If this symbol is defined by a dynamic object and referenced by a
1772 regular object, see whether we gave it a reasonable value while
1773 scanning the relocs. */
1774 if ((h->flags & SUNOS_DEF_REGULAR) == 0
1775 && (h->flags & SUNOS_DEF_DYNAMIC) != 0
1776 && (h->flags & SUNOS_REF_REGULAR) != 0)
1778 if ((h->root.root.type == bfd_link_hash_defined
1779 || h->root.root.type == bfd_link_hash_defweak)
1780 && ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
1781 && h->root.root.u.def.section->output_section == NULL)
1785 /* This symbol is currently defined in a dynamic section
1786 which is not being put into the output file. This
1787 implies that there is no reloc against the symbol. I'm
1788 not sure why this case would ever occur. In any case, we
1789 change the symbol to be undefined. */
1790 sub = h->root.root.u.def.section->owner;
1791 h->root.root.type = bfd_link_hash_undefined;
1792 h->root.root.u.undef.abfd = sub;
1796 /* If this symbol is defined or referenced by a regular file, add it
1797 to the dynamic symbols. */
1798 if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0)
1803 unsigned char *name;
1807 BFD_ASSERT (h->dynindx == -2);
1809 dynobj = sunos_hash_table (info)->dynobj;
1811 h->dynindx = sunos_hash_table (info)->dynsymcount;
1812 ++sunos_hash_table (info)->dynsymcount;
1814 len = strlen (h->root.root.root.string);
1816 /* We don't bother to construct a BFD hash table for the strings
1817 which are the names of the dynamic symbols. Using a hash
1818 table for the regular symbols is beneficial, because the
1819 regular symbols includes the debugging symbols, which have
1820 long names and are often duplicated in several object files.
1821 There are no debugging symbols in the dynamic symbols. */
1822 s = bfd_get_linker_section (dynobj, ".dynstr");
1823 BFD_ASSERT (s != NULL);
1824 contents = bfd_realloc (s->contents, s->size + len + 1);
1825 if (contents == NULL)
1827 s->contents = contents;
1829 h->dynstr_index = s->size;
1830 strcpy ((char *) contents + s->size, h->root.root.root.string);
1833 /* Add it to the dynamic hash table. */
1834 name = (unsigned char *) h->root.root.root.string;
1836 while (*name != '\0')
1837 hash = (hash << 1) + *name++;
1839 hash %= sunos_hash_table (info)->bucketcount;
1841 s = bfd_get_linker_section (dynobj, ".hash");
1842 BFD_ASSERT (s != NULL);
1844 if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1)
1845 PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE);
1850 next = GET_WORD (dynobj,
1852 + hash * HASH_ENTRY_SIZE
1854 PUT_WORD (dynobj, s->size / HASH_ENTRY_SIZE,
1855 s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD);
1856 PUT_WORD (dynobj, h->dynindx, s->contents + s->size);
1857 PUT_WORD (dynobj, next, s->contents + s->size + BYTES_IN_WORD);
1858 s->size += HASH_ENTRY_SIZE;
1865 /* Set up the sizes and contents of the dynamic sections created in
1866 sunos_add_dynamic_symbols. This is called by the SunOS linker
1867 emulation before_allocation routine. We must set the sizes of the
1868 sections before the linker sets the addresses of the various
1869 sections. This unfortunately requires reading all the relocs so
1870 that we can work out which ones need to become dynamic relocs. If
1871 info->keep_memory is TRUE, we keep the relocs in memory; otherwise,
1872 we discard them, and will read them again later. */
1875 bfd_sunos_size_dynamic_sections (bfd *output_bfd,
1876 struct bfd_link_info *info,
1878 asection **sneedptr,
1879 asection **srulesptr)
1882 bfd_size_type dynsymcount;
1883 struct sunos_link_hash_entry *h;
1886 bfd_size_type hashalloc;
1894 if (info->relocatable)
1897 if (output_bfd->xvec != &MY(vec))
1900 /* Look through all the input BFD's and read their relocs. It would
1901 be better if we didn't have to do this, but there is no other way
1902 to determine the number of dynamic relocs we need, and, more
1903 importantly, there is no other way to know which symbols should
1904 get an entry in the procedure linkage table. */
1905 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
1907 if ((sub->flags & DYNAMIC) == 0
1908 && sub->xvec == output_bfd->xvec)
1910 if (! sunos_scan_relocs (info, sub, obj_textsec (sub),
1911 exec_hdr (sub)->a_trsize)
1912 || ! sunos_scan_relocs (info, sub, obj_datasec (sub),
1913 exec_hdr (sub)->a_drsize))
1918 dynobj = sunos_hash_table (info)->dynobj;
1919 dynsymcount = sunos_hash_table (info)->dynsymcount;
1921 /* If there were no dynamic objects in the link, and we don't need
1922 to build a global offset table, there is nothing to do here. */
1923 if (! sunos_hash_table (info)->dynamic_sections_needed
1924 && ! sunos_hash_table (info)->got_needed)
1927 /* If __GLOBAL_OFFSET_TABLE_ was mentioned, define it. */
1928 h = sunos_link_hash_lookup (sunos_hash_table (info),
1929 "__GLOBAL_OFFSET_TABLE_", FALSE, FALSE, FALSE);
1930 if (h != NULL && (h->flags & SUNOS_REF_REGULAR) != 0)
1932 h->flags |= SUNOS_DEF_REGULAR;
1933 if (h->dynindx == -1)
1935 ++sunos_hash_table (info)->dynsymcount;
1938 s = bfd_get_linker_section (dynobj, ".got");
1939 BFD_ASSERT (s != NULL);
1940 h->root.root.type = bfd_link_hash_defined;
1941 h->root.root.u.def.section = s;
1943 /* If the .got section is more than 0x1000 bytes, we set
1944 __GLOBAL_OFFSET_TABLE_ to be 0x1000 bytes into the section,
1945 so that 13 bit relocations have a greater chance of working. */
1946 if (s->size >= 0x1000)
1947 h->root.root.u.def.value = 0x1000;
1949 h->root.root.u.def.value = 0;
1951 sunos_hash_table (info)->got_base = h->root.root.u.def.value;
1954 /* If there are any shared objects in the link, then we need to set
1955 up the dynamic linking information. */
1956 if (sunos_hash_table (info)->dynamic_sections_needed)
1958 *sdynptr = bfd_get_linker_section (dynobj, ".dynamic");
1960 /* The .dynamic section is always the same size. */
1962 BFD_ASSERT (s != NULL);
1963 s->size = (sizeof (struct external_sun4_dynamic)
1964 + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE
1965 + sizeof (struct external_sun4_dynamic_link));
1967 /* Set the size of the .dynsym and .hash sections. We counted
1968 the number of dynamic symbols as we read the input files. We
1969 will build the dynamic symbol table (.dynsym) and the hash
1970 table (.hash) when we build the final symbol table, because
1971 until then we do not know the correct value to give the
1972 symbols. We build the dynamic symbol string table (.dynstr)
1973 in a traversal of the symbol table using
1974 sunos_scan_dynamic_symbol. */
1975 s = bfd_get_linker_section (dynobj, ".dynsym");
1976 BFD_ASSERT (s != NULL);
1977 s->size = dynsymcount * sizeof (struct external_nlist);
1978 s->contents = bfd_alloc (output_bfd, s->size);
1979 if (s->contents == NULL && s->size != 0)
1982 /* The number of buckets is just the number of symbols divided
1983 by four. To compute the final size of the hash table, we
1984 must actually compute the hash table. Normally we need
1985 exactly as many entries in the hash table as there are
1986 dynamic symbols, but if some of the buckets are not used we
1987 will need additional entries. In the worst case, every
1988 symbol will hash to the same bucket, and we will need
1989 BUCKETCOUNT - 1 extra entries. */
1990 if (dynsymcount >= 4)
1991 bucketcount = dynsymcount / 4;
1992 else if (dynsymcount > 0)
1993 bucketcount = dynsymcount;
1996 s = bfd_get_linker_section (dynobj, ".hash");
1997 BFD_ASSERT (s != NULL);
1998 hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE;
1999 s->contents = bfd_zalloc (dynobj, hashalloc);
2000 if (s->contents == NULL && dynsymcount > 0)
2002 for (i = 0; i < bucketcount; i++)
2003 PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE);
2004 s->size = bucketcount * HASH_ENTRY_SIZE;
2006 sunos_hash_table (info)->bucketcount = bucketcount;
2008 /* Scan all the symbols, place them in the dynamic symbol table,
2009 and build the dynamic hash table. We reuse dynsymcount as a
2010 counter for the number of symbols we have added so far. */
2011 sunos_hash_table (info)->dynsymcount = 0;
2012 sunos_link_hash_traverse (sunos_hash_table (info),
2013 sunos_scan_dynamic_symbol,
2015 BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount);
2017 /* The SunOS native linker seems to align the total size of the
2018 symbol strings to a multiple of 8. I don't know if this is
2019 important, but it can't hurt much. */
2020 s = bfd_get_linker_section (dynobj, ".dynstr");
2021 BFD_ASSERT (s != NULL);
2022 if ((s->size & 7) != 0)
2027 add = 8 - (s->size & 7);
2028 contents = bfd_realloc (s->contents, s->size + add);
2029 if (contents == NULL)
2031 memset (contents + s->size, 0, (size_t) add);
2032 s->contents = contents;
2037 /* Now that we have worked out the sizes of the procedure linkage
2038 table and the dynamic relocs, allocate storage for them. */
2039 s = bfd_get_linker_section (dynobj, ".plt");
2040 BFD_ASSERT (s != NULL);
2043 s->contents = bfd_alloc (dynobj, s->size);
2044 if (s->contents == NULL)
2047 /* Fill in the first entry in the table. */
2048 switch (bfd_get_arch (dynobj))
2050 case bfd_arch_sparc:
2051 memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE);
2055 memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE);
2063 s = bfd_get_linker_section (dynobj, ".dynrel");
2066 s->contents = bfd_alloc (dynobj, s->size);
2067 if (s->contents == NULL)
2070 /* We use the reloc_count field to keep track of how many of the
2071 relocs we have output so far. */
2074 /* Make space for the global offset table. */
2075 s = bfd_get_linker_section (dynobj, ".got");
2076 s->contents = bfd_alloc (dynobj, s->size);
2077 if (s->contents == NULL)
2080 *sneedptr = bfd_get_section_by_name (dynobj, ".need");
2081 *srulesptr = bfd_get_section_by_name (dynobj, ".rules");
2086 /* Link a dynamic object. We actually don't have anything to do at
2087 this point. This entry point exists to prevent the regular linker
2088 code from doing anything with the object. */
2091 sunos_link_dynamic_object (struct bfd_link_info *info ATTRIBUTE_UNUSED,
2092 bfd *abfd ATTRIBUTE_UNUSED)
2097 /* Write out a dynamic symbol. This is called by the final traversal
2098 over the symbol table. */
2101 sunos_write_dynamic_symbol (bfd *output_bfd,
2102 struct bfd_link_info *info,
2103 struct aout_link_hash_entry *harg)
2105 struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg;
2109 struct external_nlist *outsym;
2111 /* If this symbol is in the procedure linkage table, fill in the
2113 if (h->plt_offset != 0)
2120 dynobj = sunos_hash_table (info)->dynobj;
2121 splt = bfd_get_linker_section (dynobj, ".plt");
2122 p = splt->contents + h->plt_offset;
2124 s = bfd_get_linker_section (dynobj, ".dynrel");
2126 r_address = (splt->output_section->vma
2127 + splt->output_offset
2130 switch (bfd_get_arch (output_bfd))
2132 case bfd_arch_sparc:
2133 if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
2135 bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p);
2136 bfd_put_32 (output_bfd,
2137 (SPARC_PLT_ENTRY_WORD1
2138 + (((- (h->plt_offset + 4) >> 2)
2141 bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count,
2146 val = (h->root.root.u.def.section->output_section->vma
2147 + h->root.root.u.def.section->output_offset
2148 + h->root.root.u.def.value);
2149 bfd_put_32 (output_bfd,
2150 SPARC_PLT_PIC_WORD0 + ((val >> 10) & 0x3fffff),
2152 bfd_put_32 (output_bfd,
2153 SPARC_PLT_PIC_WORD1 + (val & 0x3ff),
2155 bfd_put_32 (output_bfd, SPARC_PLT_PIC_WORD2, p + 8);
2160 if (! info->shared && (h->flags & SUNOS_DEF_REGULAR) != 0)
2162 bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p);
2163 bfd_put_32 (output_bfd, (- (h->plt_offset + 2)), p + 2);
2164 bfd_put_16 (output_bfd, (bfd_vma) s->reloc_count, p + 6);
2172 /* We also need to add a jump table reloc, unless this is the
2173 result of a JMP_TBL reloc from PIC compiled code. */
2174 if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0)
2176 BFD_ASSERT (h->dynindx >= 0);
2177 BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
2179 p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd);
2180 if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE)
2182 struct reloc_std_external *srel;
2184 srel = (struct reloc_std_external *) p;
2185 PUT_WORD (output_bfd, r_address, srel->r_address);
2186 if (bfd_header_big_endian (output_bfd))
2188 srel->r_index[0] = (bfd_byte) (h->dynindx >> 16);
2189 srel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2190 srel->r_index[2] = (bfd_byte) (h->dynindx);
2191 srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG
2192 | RELOC_STD_BITS_JMPTABLE_BIG);
2196 srel->r_index[2] = (bfd_byte) (h->dynindx >> 16);
2197 srel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2198 srel->r_index[0] = (bfd_byte)h->dynindx;
2199 srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE
2200 | RELOC_STD_BITS_JMPTABLE_LITTLE);
2205 struct reloc_ext_external *erel;
2207 erel = (struct reloc_ext_external *) p;
2208 PUT_WORD (output_bfd, r_address, erel->r_address);
2209 if (bfd_header_big_endian (output_bfd))
2211 erel->r_index[0] = (bfd_byte) (h->dynindx >> 16);
2212 erel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2213 erel->r_index[2] = (bfd_byte)h->dynindx;
2215 (RELOC_EXT_BITS_EXTERN_BIG
2216 | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_BIG));
2220 erel->r_index[2] = (bfd_byte) (h->dynindx >> 16);
2221 erel->r_index[1] = (bfd_byte) (h->dynindx >> 8);
2222 erel->r_index[0] = (bfd_byte)h->dynindx;
2224 (RELOC_EXT_BITS_EXTERN_LITTLE
2225 | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2227 PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend);
2234 /* If this is not a dynamic symbol, we don't have to do anything
2235 else. We only check this after handling the PLT entry, because
2236 we can have a PLT entry for a nondynamic symbol when linking PIC
2237 compiled code from a regular object. */
2241 switch (h->root.root.type)
2244 case bfd_link_hash_new:
2246 /* Avoid variable not initialized warnings. */
2248 case bfd_link_hash_undefined:
2249 type = N_UNDF | N_EXT;
2252 case bfd_link_hash_defined:
2253 case bfd_link_hash_defweak:
2256 asection *output_section;
2258 sec = h->root.root.u.def.section;
2259 output_section = sec->output_section;
2260 BFD_ASSERT (bfd_is_abs_section (output_section)
2261 || output_section->owner == output_bfd);
2262 if (h->plt_offset != 0
2263 && (h->flags & SUNOS_DEF_REGULAR) == 0)
2265 type = N_UNDF | N_EXT;
2270 if (output_section == obj_textsec (output_bfd))
2271 type = (h->root.root.type == bfd_link_hash_defined
2274 else if (output_section == obj_datasec (output_bfd))
2275 type = (h->root.root.type == bfd_link_hash_defined
2278 else if (output_section == obj_bsssec (output_bfd))
2279 type = (h->root.root.type == bfd_link_hash_defined
2283 type = (h->root.root.type == bfd_link_hash_defined
2287 val = (h->root.root.u.def.value
2288 + output_section->vma
2289 + sec->output_offset);
2293 case bfd_link_hash_common:
2294 type = N_UNDF | N_EXT;
2295 val = h->root.root.u.c.size;
2297 case bfd_link_hash_undefweak:
2301 case bfd_link_hash_indirect:
2302 case bfd_link_hash_warning:
2303 /* FIXME: Ignore these for now. The circumstances under which
2304 they should be written out are not clear to me. */
2308 s = bfd_get_linker_section (sunos_hash_table (info)->dynobj, ".dynsym");
2309 BFD_ASSERT (s != NULL);
2310 outsym = ((struct external_nlist *)
2311 (s->contents + h->dynindx * EXTERNAL_NLIST_SIZE));
2313 H_PUT_8 (output_bfd, type, outsym->e_type);
2314 H_PUT_8 (output_bfd, 0, outsym->e_other);
2316 /* FIXME: The native linker doesn't use 0 for desc. It seems to use
2317 one less than the desc value in the shared library, although that
2319 H_PUT_16 (output_bfd, 0, outsym->e_desc);
2321 PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx);
2322 PUT_WORD (output_bfd, val, outsym->e_value);
2327 /* This is called for each reloc against an external symbol. If this
2328 is a reloc which are are going to copy as a dynamic reloc, then
2329 copy it over, and tell the caller to not bother processing this
2333 sunos_check_dynamic_reloc (struct bfd_link_info *info,
2335 asection *input_section,
2336 struct aout_link_hash_entry *harg,
2338 bfd_byte *contents ATTRIBUTE_UNUSED,
2340 bfd_vma *relocationp)
2342 struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg;
2344 bfd_boolean baserel;
2353 dynobj = sunos_hash_table (info)->dynobj;
2356 && h->plt_offset != 0
2358 || (h->flags & SUNOS_DEF_REGULAR) == 0))
2362 /* Redirect the relocation to the PLT entry. */
2363 splt = bfd_get_linker_section (dynobj, ".plt");
2364 *relocationp = (splt->output_section->vma
2365 + splt->output_offset
2369 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
2371 struct reloc_std_external *srel;
2373 srel = (struct reloc_std_external *) reloc;
2374 if (bfd_header_big_endian (input_bfd))
2376 baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2377 jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2378 pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2382 baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2383 jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2384 pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2389 struct reloc_ext_external *erel;
2392 erel = (struct reloc_ext_external *) reloc;
2393 if (bfd_header_big_endian (input_bfd))
2394 r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2395 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2397 r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2398 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2399 baserel = (r_type == RELOC_BASE10
2400 || r_type == RELOC_BASE13
2401 || r_type == RELOC_BASE22);
2402 jmptbl = r_type == RELOC_JMP_TBL;
2403 pcrel = (r_type == RELOC_DISP8
2404 || r_type == RELOC_DISP16
2405 || r_type == RELOC_DISP32
2406 || r_type == RELOC_WDISP30
2407 || r_type == RELOC_WDISP22);
2408 /* We don't consider the PC10 and PC22 types to be PC relative,
2409 because they are pcrel_offset. */
2414 bfd_vma *got_offsetp;
2418 got_offsetp = &h->got_offset;
2419 else if (adata (input_bfd).local_got_offsets == NULL)
2423 struct reloc_std_external *srel;
2426 srel = (struct reloc_std_external *) reloc;
2427 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
2429 if (bfd_header_big_endian (input_bfd))
2430 r_index = ((srel->r_index[0] << 16)
2431 | (srel->r_index[1] << 8)
2432 | srel->r_index[2]);
2434 r_index = ((srel->r_index[2] << 16)
2435 | (srel->r_index[1] << 8)
2436 | srel->r_index[0]);
2440 struct reloc_ext_external *erel;
2442 erel = (struct reloc_ext_external *) reloc;
2443 if (bfd_header_big_endian (input_bfd))
2444 r_index = ((erel->r_index[0] << 16)
2445 | (erel->r_index[1] << 8)
2446 | erel->r_index[2]);
2448 r_index = ((erel->r_index[2] << 16)
2449 | (erel->r_index[1] << 8)
2450 | erel->r_index[0]);
2453 got_offsetp = adata (input_bfd).local_got_offsets + r_index;
2456 BFD_ASSERT (got_offsetp != NULL && *got_offsetp != 0);
2458 sgot = bfd_get_linker_section (dynobj, ".got");
2460 /* We set the least significant bit to indicate whether we have
2461 already initialized the GOT entry. */
2462 if ((*got_offsetp & 1) == 0)
2466 && ((h->flags & SUNOS_DEF_DYNAMIC) == 0
2467 || (h->flags & SUNOS_DEF_REGULAR) != 0)))
2468 PUT_WORD (dynobj, *relocationp, sgot->contents + *got_offsetp);
2470 PUT_WORD (dynobj, 0, sgot->contents + *got_offsetp);
2474 && (h->flags & SUNOS_DEF_DYNAMIC) != 0
2475 && (h->flags & SUNOS_DEF_REGULAR) == 0))
2477 /* We need to create a GLOB_DAT or 32 reloc to tell the
2478 dynamic linker to fill in this entry in the table. */
2480 s = bfd_get_linker_section (dynobj, ".dynrel");
2481 BFD_ASSERT (s != NULL);
2482 BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
2486 + s->reloc_count * obj_reloc_entry_size (dynobj));
2493 if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE)
2495 struct reloc_std_external *srel;
2497 srel = (struct reloc_std_external *) p;
2500 + sgot->output_section->vma
2501 + sgot->output_offset),
2503 if (bfd_header_big_endian (dynobj))
2505 srel->r_index[0] = (bfd_byte) (indx >> 16);
2506 srel->r_index[1] = (bfd_byte) (indx >> 8);
2507 srel->r_index[2] = (bfd_byte)indx;
2509 srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_BIG;
2512 (RELOC_STD_BITS_EXTERN_BIG
2513 | RELOC_STD_BITS_BASEREL_BIG
2514 | RELOC_STD_BITS_RELATIVE_BIG
2515 | (2 << RELOC_STD_BITS_LENGTH_SH_BIG));
2519 srel->r_index[2] = (bfd_byte) (indx >> 16);
2520 srel->r_index[1] = (bfd_byte) (indx >> 8);
2521 srel->r_index[0] = (bfd_byte)indx;
2523 srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_LITTLE;
2526 (RELOC_STD_BITS_EXTERN_LITTLE
2527 | RELOC_STD_BITS_BASEREL_LITTLE
2528 | RELOC_STD_BITS_RELATIVE_LITTLE
2529 | (2 << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2534 struct reloc_ext_external *erel;
2536 erel = (struct reloc_ext_external *) p;
2539 + sgot->output_section->vma
2540 + sgot->output_offset),
2542 if (bfd_header_big_endian (dynobj))
2544 erel->r_index[0] = (bfd_byte) (indx >> 16);
2545 erel->r_index[1] = (bfd_byte) (indx >> 8);
2546 erel->r_index[2] = (bfd_byte)indx;
2549 RELOC_32 << RELOC_EXT_BITS_TYPE_SH_BIG;
2552 (RELOC_EXT_BITS_EXTERN_BIG
2553 | (RELOC_GLOB_DAT << RELOC_EXT_BITS_TYPE_SH_BIG));
2557 erel->r_index[2] = (bfd_byte) (indx >> 16);
2558 erel->r_index[1] = (bfd_byte) (indx >> 8);
2559 erel->r_index[0] = (bfd_byte)indx;
2562 RELOC_32 << RELOC_EXT_BITS_TYPE_SH_LITTLE;
2565 (RELOC_EXT_BITS_EXTERN_LITTLE
2567 << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2569 PUT_WORD (dynobj, 0, erel->r_addend);
2578 *relocationp = (sgot->vma
2579 + (*got_offsetp &~ (bfd_vma) 1)
2580 - sunos_hash_table (info)->got_base);
2582 /* There is nothing else to do for a base relative reloc. */
2586 if (! sunos_hash_table (info)->dynamic_sections_needed)
2592 || h->root.root.type != bfd_link_hash_undefined
2593 || (h->flags & SUNOS_DEF_REGULAR) != 0
2594 || (h->flags & SUNOS_DEF_DYNAMIC) == 0
2595 || (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0)
2601 && (h->dynindx == -1
2603 || strcmp (h->root.root.root.string,
2604 "__GLOBAL_OFFSET_TABLE_") == 0))
2608 /* It looks like this is a reloc we are supposed to copy. */
2610 s = bfd_get_linker_section (dynobj, ".dynrel");
2611 BFD_ASSERT (s != NULL);
2612 BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) < s->size);
2614 p = s->contents + s->reloc_count * obj_reloc_entry_size (dynobj);
2616 /* Copy the reloc over. */
2617 memcpy (p, reloc, obj_reloc_entry_size (dynobj));
2624 /* Adjust the address and symbol index. */
2625 if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE)
2627 struct reloc_std_external *srel;
2629 srel = (struct reloc_std_external *) p;
2631 (GET_WORD (dynobj, srel->r_address)
2632 + input_section->output_section->vma
2633 + input_section->output_offset),
2635 if (bfd_header_big_endian (dynobj))
2637 srel->r_index[0] = (bfd_byte) (indx >> 16);
2638 srel->r_index[1] = (bfd_byte) (indx >> 8);
2639 srel->r_index[2] = (bfd_byte)indx;
2643 srel->r_index[2] = (bfd_byte) (indx >> 16);
2644 srel->r_index[1] = (bfd_byte) (indx >> 8);
2645 srel->r_index[0] = (bfd_byte)indx;
2647 /* FIXME: We may have to change the addend for a PC relative
2652 struct reloc_ext_external *erel;
2654 erel = (struct reloc_ext_external *) p;
2656 (GET_WORD (dynobj, erel->r_address)
2657 + input_section->output_section->vma
2658 + input_section->output_offset),
2660 if (bfd_header_big_endian (dynobj))
2662 erel->r_index[0] = (bfd_byte) (indx >> 16);
2663 erel->r_index[1] = (bfd_byte) (indx >> 8);
2664 erel->r_index[2] = (bfd_byte)indx;
2668 erel->r_index[2] = (bfd_byte) (indx >> 16);
2669 erel->r_index[1] = (bfd_byte) (indx >> 8);
2670 erel->r_index[0] = (bfd_byte)indx;
2672 if (pcrel && h != NULL)
2674 /* Adjust the addend for the change in address. */
2676 (GET_WORD (dynobj, erel->r_addend)
2677 - (input_section->output_section->vma
2678 + input_section->output_offset
2679 - input_section->vma)),
2692 /* Finish up the dynamic linking information. */
2695 sunos_finish_dynamic_link (bfd *abfd, struct bfd_link_info *info)
2702 if (! sunos_hash_table (info)->dynamic_sections_needed
2703 && ! sunos_hash_table (info)->got_needed)
2706 dynobj = sunos_hash_table (info)->dynobj;
2708 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
2709 BFD_ASSERT (sdyn != NULL);
2711 /* Finish up the .need section. The linker emulation code filled it
2712 in, but with offsets from the start of the section instead of
2713 real addresses. Now that we know the section location, we can
2714 fill in the final values. */
2715 s = bfd_get_section_by_name (dynobj, ".need");
2716 if (s != NULL && s->size != 0)
2721 filepos = s->output_section->filepos + s->output_offset;
2727 PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p);
2728 val = GET_WORD (dynobj, p + 12);
2731 PUT_WORD (dynobj, val + filepos, p + 12);
2736 /* The first entry in the .got section is the address of the
2737 dynamic information, unless this is a shared library. */
2738 s = bfd_get_linker_section (dynobj, ".got");
2739 BFD_ASSERT (s != NULL);
2740 if (info->shared || sdyn->size == 0)
2741 PUT_WORD (dynobj, 0, s->contents);
2743 PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset,
2746 for (o = dynobj->sections; o != NULL; o = o->next)
2748 if ((o->flags & SEC_HAS_CONTENTS) != 0
2749 && o->contents != NULL)
2751 BFD_ASSERT (o->output_section != NULL
2752 && o->output_section->owner == abfd);
2753 if (! bfd_set_section_contents (abfd, o->output_section,
2755 (file_ptr) o->output_offset,
2763 struct external_sun4_dynamic esd;
2764 struct external_sun4_dynamic_link esdl;
2767 /* Finish up the dynamic link information. */
2768 PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version);
2770 sdyn->output_section->vma + sdyn->output_offset + sizeof esd,
2773 (sdyn->output_section->vma
2774 + sdyn->output_offset
2776 + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE),
2779 if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd,
2780 (file_ptr) sdyn->output_offset,
2781 (bfd_size_type) sizeof esd))
2784 PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded);
2786 s = bfd_get_section_by_name (dynobj, ".need");
2787 if (s == NULL || s->size == 0)
2788 PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need);
2790 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2793 s = bfd_get_section_by_name (dynobj, ".rules");
2794 if (s == NULL || s->size == 0)
2795 PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules);
2797 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2800 s = bfd_get_linker_section (dynobj, ".got");
2801 BFD_ASSERT (s != NULL);
2802 PUT_WORD (dynobj, s->output_section->vma + s->output_offset,
2805 s = bfd_get_linker_section (dynobj, ".plt");
2806 BFD_ASSERT (s != NULL);
2807 PUT_WORD (dynobj, s->output_section->vma + s->output_offset,
2809 PUT_WORD (dynobj, s->size, esdl.ld_plt_sz);
2811 s = bfd_get_linker_section (dynobj, ".dynrel");
2812 BFD_ASSERT (s != NULL);
2813 BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj)
2815 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2818 s = bfd_get_linker_section (dynobj, ".hash");
2819 BFD_ASSERT (s != NULL);
2820 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2823 s = bfd_get_linker_section (dynobj, ".dynsym");
2824 BFD_ASSERT (s != NULL);
2825 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2828 PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash);
2830 PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount,
2833 s = bfd_get_linker_section (dynobj, ".dynstr");
2834 BFD_ASSERT (s != NULL);
2835 PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
2837 PUT_WORD (dynobj, s->size, esdl.ld_symb_size);
2839 /* The size of the text area is the size of the .text section
2840 rounded up to a page boundary. FIXME: Should the page size be
2841 conditional on something? */
2843 BFD_ALIGN (obj_textsec (abfd)->size, 0x2000),
2846 pos = sdyn->output_offset;
2847 pos += sizeof esd + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE;
2848 if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl,
2849 pos, (bfd_size_type) sizeof esdl))
2852 abfd->flags |= DYNAMIC;