diff options
Diffstat (limited to 'binutils-2.25/bfd/sunos.c')
| -rw-r--r-- | binutils-2.25/bfd/sunos.c | 2847 |
1 files changed, 2847 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/sunos.c b/binutils-2.25/bfd/sunos.c new file mode 100644 index 00000000..6d84f43f --- /dev/null +++ b/binutils-2.25/bfd/sunos.c @@ -0,0 +1,2847 @@ +/* BFD backend for SunOS binaries. + Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2011, 2012 + Free Software Foundation, Inc. + Written by Cygnus Support. + + This file is part of BFD, the Binary File Descriptor library. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ + +#define TARGETNAME "a.out-sunos-big" + +/* Do not "beautify" the CONCAT* macro args. Traditional C will not + remove whitespace added here, and thus will fail to concatenate + the tokens. */ +#define MY(OP) CONCAT2 (sunos_big_,OP) + +#include "sysdep.h" +#include "bfd.h" +#include "bfdlink.h" +#include "libaout.h" + +/* ??? Where should this go? */ +#define MACHTYPE_OK(mtype) \ + (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \ + || ((mtype) == M_SPARCLET \ + && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ + || ((mtype) == M_SPARCLITE_LE \ + && bfd_lookup_arch (bfd_arch_sparc, bfd_mach_sparc_sparclet) != NULL) \ + || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \ + && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL)) + +#define MY_get_dynamic_symtab_upper_bound sunos_get_dynamic_symtab_upper_bound +#define MY_canonicalize_dynamic_symtab sunos_canonicalize_dynamic_symtab +#define MY_get_synthetic_symtab _bfd_nodynamic_get_synthetic_symtab +#define MY_get_dynamic_reloc_upper_bound sunos_get_dynamic_reloc_upper_bound +#define MY_canonicalize_dynamic_reloc sunos_canonicalize_dynamic_reloc +#define MY_bfd_link_hash_table_create sunos_link_hash_table_create +#define MY_add_dynamic_symbols sunos_add_dynamic_symbols +#define MY_add_one_symbol sunos_add_one_symbol +#define MY_link_dynamic_object sunos_link_dynamic_object +#define MY_write_dynamic_symbol sunos_write_dynamic_symbol +#define MY_check_dynamic_reloc sunos_check_dynamic_reloc +#define MY_finish_dynamic_link sunos_finish_dynamic_link + +static bfd_boolean sunos_add_dynamic_symbols (bfd *, struct bfd_link_info *, struct external_nlist **, bfd_size_type *, char **); +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 **); +static bfd_boolean sunos_link_dynamic_object (struct bfd_link_info *, bfd *); +static bfd_boolean sunos_write_dynamic_symbol (bfd *, struct bfd_link_info *, struct aout_link_hash_entry *); +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 *); +static bfd_boolean sunos_finish_dynamic_link (bfd *, struct bfd_link_info *); +static struct bfd_link_hash_table *sunos_link_hash_table_create (bfd *); +static long sunos_get_dynamic_symtab_upper_bound (bfd *); +static long sunos_canonicalize_dynamic_symtab (bfd *, asymbol **); +static long sunos_get_dynamic_reloc_upper_bound (bfd *); +static long sunos_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **); + +/* Include the usual a.out support. */ +#include "aoutf1.h" + +/* The SunOS 4.1.4 /usr/include/locale.h defines valid as a macro. */ +#undef valid + +/* SunOS shared library support. We store a pointer to this structure + in obj_aout_dynamic_info (abfd). */ + +struct sunos_dynamic_info +{ + /* Whether we found any dynamic information. */ + bfd_boolean valid; + /* Dynamic information. */ + struct internal_sun4_dynamic_link dyninfo; + /* Number of dynamic symbols. */ + unsigned long dynsym_count; + /* Read in nlists for dynamic symbols. */ + struct external_nlist *dynsym; + /* asymbol structures for dynamic symbols. */ + aout_symbol_type *canonical_dynsym; + /* Read in dynamic string table. */ + char *dynstr; + /* Number of dynamic relocs. */ + unsigned long dynrel_count; + /* Read in dynamic relocs. This may be reloc_std_external or + reloc_ext_external. */ + void * dynrel; + /* arelent structures for dynamic relocs. */ + arelent *canonical_dynrel; +}; + +/* The hash table of dynamic symbols is composed of two word entries. + See include/aout/sun4.h for details. */ + +#define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD) + +/* Read in the basic dynamic information. This locates the __DYNAMIC + structure and uses it to find the dynamic_link structure. It + creates and saves a sunos_dynamic_info structure. If it can't find + __DYNAMIC, it sets the valid field of the sunos_dynamic_info + structure to FALSE to avoid doing this work again. */ + +static bfd_boolean +sunos_read_dynamic_info (bfd *abfd) +{ + struct sunos_dynamic_info *info; + asection *dynsec; + bfd_vma dynoff; + struct external_sun4_dynamic dyninfo; + unsigned long dynver; + struct external_sun4_dynamic_link linkinfo; + bfd_size_type amt; + + if (obj_aout_dynamic_info (abfd) != NULL) + return TRUE; + + if ((abfd->flags & DYNAMIC) == 0) + { + bfd_set_error (bfd_error_invalid_operation); + return FALSE; + } + + amt = sizeof (struct sunos_dynamic_info); + info = bfd_zalloc (abfd, amt); + if (!info) + return FALSE; + info->valid = FALSE; + info->dynsym = NULL; + info->dynstr = NULL; + info->canonical_dynsym = NULL; + info->dynrel = NULL; + info->canonical_dynrel = NULL; + obj_aout_dynamic_info (abfd) = (void *) info; + + /* This code used to look for the __DYNAMIC symbol to locate the dynamic + linking information. + However this inhibits recovering the dynamic symbols from a + stripped object file, so blindly assume that the dynamic linking + information is located at the start of the data section. + We could verify this assumption later by looking through the dynamic + symbols for the __DYNAMIC symbol. */ + if ((abfd->flags & DYNAMIC) == 0) + return TRUE; + if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (void *) &dyninfo, + (file_ptr) 0, + (bfd_size_type) sizeof dyninfo)) + return TRUE; + + dynver = GET_WORD (abfd, dyninfo.ld_version); + if (dynver != 2 && dynver != 3) + return TRUE; + + dynoff = GET_WORD (abfd, dyninfo.ld); + + /* dynoff is a virtual address. It is probably always in the .data + section, but this code should work even if it moves. */ + if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd))) + dynsec = obj_textsec (abfd); + else + dynsec = obj_datasec (abfd); + dynoff -= bfd_get_section_vma (abfd, dynsec); + if (dynoff > dynsec->size) + return TRUE; + + /* This executable appears to be dynamically linked in a way that we + can understand. */ + if (! bfd_get_section_contents (abfd, dynsec, (void *) &linkinfo, + (file_ptr) dynoff, + (bfd_size_type) sizeof linkinfo)) + return TRUE; + + /* Swap in the dynamic link information. */ + info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded); + info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need); + info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules); + info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got); + info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt); + info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel); + info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash); + info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab); + info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash); + info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets); + info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols); + info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size); + info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text); + info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz); + + /* Reportedly the addresses need to be offset by the size of the + exec header in an NMAGIC file. */ + if (adata (abfd).magic == n_magic) + { + unsigned long exec_bytes_size = adata (abfd).exec_bytes_size; + + info->dyninfo.ld_need += exec_bytes_size; + info->dyninfo.ld_rules += exec_bytes_size; + info->dyninfo.ld_rel += exec_bytes_size; + info->dyninfo.ld_hash += exec_bytes_size; + info->dyninfo.ld_stab += exec_bytes_size; + info->dyninfo.ld_symbols += exec_bytes_size; + } + + /* The only way to get the size of the symbol information appears to + be to determine the distance between it and the string table. */ + info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab) + / EXTERNAL_NLIST_SIZE); + BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE + == (unsigned long) (info->dyninfo.ld_symbols + - info->dyninfo.ld_stab)); + + /* Similarly, the relocs end at the hash table. */ + info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel) + / obj_reloc_entry_size (abfd)); + BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd) + == (unsigned long) (info->dyninfo.ld_hash + - info->dyninfo.ld_rel)); + + info->valid = TRUE; + + return TRUE; +} + +/* Return the amount of memory required for the dynamic symbols. */ + +static long +sunos_get_dynamic_symtab_upper_bound (bfd *abfd) +{ + struct sunos_dynamic_info *info; + + if (! sunos_read_dynamic_info (abfd)) + return -1; + + info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); + if (! info->valid) + { + bfd_set_error (bfd_error_no_symbols); + return -1; + } + + return (info->dynsym_count + 1) * sizeof (asymbol *); +} + +/* Read the external dynamic symbols. */ + +static bfd_boolean +sunos_slurp_dynamic_symtab (bfd *abfd) +{ + struct sunos_dynamic_info *info; + bfd_size_type amt; + + /* Get the general dynamic information. */ + if (obj_aout_dynamic_info (abfd) == NULL) + { + if (! sunos_read_dynamic_info (abfd)) + return FALSE; + } + + info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); + if (! info->valid) + { + bfd_set_error (bfd_error_no_symbols); + return FALSE; + } + + /* Get the dynamic nlist structures. */ + if (info->dynsym == NULL) + { + amt = (bfd_size_type) info->dynsym_count * EXTERNAL_NLIST_SIZE; + info->dynsym = bfd_alloc (abfd, amt); + if (info->dynsym == NULL && info->dynsym_count != 0) + return FALSE; + if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_stab, SEEK_SET) != 0 + || bfd_bread ((void *) info->dynsym, amt, abfd) != amt) + { + if (info->dynsym != NULL) + { + bfd_release (abfd, info->dynsym); + info->dynsym = NULL; + } + return FALSE; + } + } + + /* Get the dynamic strings. */ + if (info->dynstr == NULL) + { + amt = info->dyninfo.ld_symb_size; + info->dynstr = bfd_alloc (abfd, amt); + if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0) + return FALSE; + if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_symbols, SEEK_SET) != 0 + || bfd_bread ((void *) info->dynstr, amt, abfd) != amt) + { + if (info->dynstr != NULL) + { + bfd_release (abfd, info->dynstr); + info->dynstr = NULL; + } + return FALSE; + } + } + + return TRUE; +} + +/* Read in the dynamic symbols. */ + +static long +sunos_canonicalize_dynamic_symtab (bfd *abfd, asymbol **storage) +{ + struct sunos_dynamic_info *info; + unsigned long i; + + if (! sunos_slurp_dynamic_symtab (abfd)) + return -1; + + info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); + +#ifdef CHECK_DYNAMIC_HASH + /* Check my understanding of the dynamic hash table by making sure + that each symbol can be located in the hash table. */ + { + bfd_size_type table_size; + bfd_byte *table; + bfd_size_type i; + + if (info->dyninfo.ld_buckets > info->dynsym_count) + abort (); + table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash; + table = bfd_malloc (table_size); + if (table == NULL && table_size != 0) + abort (); + if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_hash, SEEK_SET) != 0 + || bfd_bread ((void *) table, table_size, abfd) != table_size) + abort (); + for (i = 0; i < info->dynsym_count; i++) + { + unsigned char *name; + unsigned long hash; + + name = ((unsigned char *) info->dynstr + + GET_WORD (abfd, info->dynsym[i].e_strx)); + hash = 0; + while (*name != '\0') + hash = (hash << 1) + *name++; + hash &= 0x7fffffff; + hash %= info->dyninfo.ld_buckets; + while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i) + { + hash = GET_WORD (abfd, + table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); + if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE) + abort (); + } + } + free (table); + } +#endif /* CHECK_DYNAMIC_HASH */ + + /* Get the asymbol structures corresponding to the dynamic nlist + structures. */ + if (info->canonical_dynsym == NULL) + { + bfd_size_type size; + bfd_size_type strsize = info->dyninfo.ld_symb_size; + + size = (bfd_size_type) info->dynsym_count * sizeof (aout_symbol_type); + info->canonical_dynsym = bfd_alloc (abfd, size); + if (info->canonical_dynsym == NULL && info->dynsym_count != 0) + return -1; + + if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym, + info->dynsym, + (bfd_size_type) info->dynsym_count, + info->dynstr, strsize, TRUE)) + { + if (info->canonical_dynsym != NULL) + { + bfd_release (abfd, info->canonical_dynsym); + info->canonical_dynsym = NULL; + } + return -1; + } + } + + /* Return pointers to the dynamic asymbol structures. */ + for (i = 0; i < info->dynsym_count; i++) + *storage++ = (asymbol *) (info->canonical_dynsym + i); + *storage = NULL; + + return info->dynsym_count; +} + +/* Return the amount of memory required for the dynamic relocs. */ + +static long +sunos_get_dynamic_reloc_upper_bound (bfd *abfd) +{ + struct sunos_dynamic_info *info; + + if (! sunos_read_dynamic_info (abfd)) + return -1; + + info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); + if (! info->valid) + { + bfd_set_error (bfd_error_no_symbols); + return -1; + } + + return (info->dynrel_count + 1) * sizeof (arelent *); +} + +/* Read in the dynamic relocs. */ + +static long +sunos_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage, asymbol **syms) +{ + struct sunos_dynamic_info *info; + unsigned long i; + bfd_size_type size; + + /* Get the general dynamic information. */ + if (obj_aout_dynamic_info (abfd) == NULL) + { + if (! sunos_read_dynamic_info (abfd)) + return -1; + } + + info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); + if (! info->valid) + { + bfd_set_error (bfd_error_no_symbols); + return -1; + } + + /* Get the dynamic reloc information. */ + if (info->dynrel == NULL) + { + size = (bfd_size_type) info->dynrel_count * obj_reloc_entry_size (abfd); + info->dynrel = bfd_alloc (abfd, size); + if (info->dynrel == NULL && size != 0) + return -1; + if (bfd_seek (abfd, (file_ptr) info->dyninfo.ld_rel, SEEK_SET) != 0 + || bfd_bread ((void *) info->dynrel, size, abfd) != size) + { + if (info->dynrel != NULL) + { + bfd_release (abfd, info->dynrel); + info->dynrel = NULL; + } + return -1; + } + } + + /* Get the arelent structures corresponding to the dynamic reloc + information. */ + if (info->canonical_dynrel == NULL) + { + arelent *to; + + size = (bfd_size_type) info->dynrel_count * sizeof (arelent); + info->canonical_dynrel = bfd_alloc (abfd, size); + if (info->canonical_dynrel == NULL && info->dynrel_count != 0) + return -1; + + to = info->canonical_dynrel; + + if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE) + { + struct reloc_ext_external *p; + struct reloc_ext_external *pend; + + p = (struct reloc_ext_external *) info->dynrel; + pend = p + info->dynrel_count; + for (; p < pend; p++, to++) + NAME (aout, swap_ext_reloc_in) (abfd, p, to, syms, + (bfd_size_type) info->dynsym_count); + } + else + { + struct reloc_std_external *p; + struct reloc_std_external *pend; + + p = (struct reloc_std_external *) info->dynrel; + pend = p + info->dynrel_count; + for (; p < pend; p++, to++) + NAME (aout, swap_std_reloc_in) (abfd, p, to, syms, + (bfd_size_type) info->dynsym_count); + } + } + + /* Return pointers to the dynamic arelent structures. */ + for (i = 0; i < info->dynrel_count; i++) + *storage++ = info->canonical_dynrel + i; + *storage = NULL; + + return info->dynrel_count; +} + +/* Code to handle linking of SunOS shared libraries. */ + +/* A SPARC procedure linkage table entry is 12 bytes. The first entry + in the table is a jump which is filled in by the runtime linker. + The remaining entries are branches back to the first entry, + followed by an index into the relocation table encoded to look like + a sethi of %g0. */ + +#define SPARC_PLT_ENTRY_SIZE (12) + +static const bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] = +{ + /* sethi %hi(0),%g1; address filled in by runtime linker. */ + 0x3, 0, 0, 0, + /* jmp %g1; offset filled in by runtime linker. */ + 0x81, 0xc0, 0x60, 0, + /* nop */ + 0x1, 0, 0, 0 +}; + +/* save %sp, -96, %sp */ +#define SPARC_PLT_ENTRY_WORD0 ((bfd_vma) 0x9de3bfa0) +/* call; address filled in later. */ +#define SPARC_PLT_ENTRY_WORD1 ((bfd_vma) 0x40000000) +/* sethi; reloc index filled in later. */ +#define SPARC_PLT_ENTRY_WORD2 ((bfd_vma) 0x01000000) + +/* This sequence is used when for the jump table entry to a defined + symbol in a complete executable. It is used when linking PIC + compiled code which is not being put into a shared library. */ +/* sethi <address to be filled in later>, %g1 */ +#define SPARC_PLT_PIC_WORD0 ((bfd_vma) 0x03000000) +/* jmp %g1 + <address to be filled in later> */ +#define SPARC_PLT_PIC_WORD1 ((bfd_vma) 0x81c06000) +/* nop */ +#define SPARC_PLT_PIC_WORD2 ((bfd_vma) 0x01000000) + +/* An m68k procedure linkage table entry is 8 bytes. The first entry + in the table is a jump which is filled in the by the runtime + linker. The remaining entries are branches back to the first + entry, followed by a two byte index into the relocation table. */ + +#define M68K_PLT_ENTRY_SIZE (8) + +static const bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] = +{ + /* jmps @# */ + 0x4e, 0xf9, + /* Filled in by runtime linker with a magic address. */ + 0, 0, 0, 0, + /* Not used? */ + 0, 0 +}; + +/* bsrl */ +#define M68K_PLT_ENTRY_WORD0 ((bfd_vma) 0x61ff) +/* Remaining words filled in later. */ + +/* An entry in the SunOS linker hash table. */ + +struct sunos_link_hash_entry +{ + struct aout_link_hash_entry root; + + /* If this is a dynamic symbol, this is its index into the dynamic + symbol table. This is initialized to -1. As the linker looks at + the input files, it changes this to -2 if it will be added to the + dynamic symbol table. After all the input files have been seen, + the linker will know whether to build a dynamic symbol table; if + it does build one, this becomes the index into the table. */ + long dynindx; + + /* If this is a dynamic symbol, this is the index of the name in the + dynamic symbol string table. */ + long dynstr_index; + + /* The offset into the global offset table used for this symbol. If + the symbol does not require a GOT entry, this is 0. */ + bfd_vma got_offset; + + /* The offset into the procedure linkage table used for this symbol. + If the symbol does not require a PLT entry, this is 0. */ + bfd_vma plt_offset; + + /* Some linker flags. */ + unsigned char flags; + /* Symbol is referenced by a regular object. */ +#define SUNOS_REF_REGULAR 01 + /* Symbol is defined by a regular object. */ +#define SUNOS_DEF_REGULAR 02 + /* Symbol is referenced by a dynamic object. */ +#define SUNOS_REF_DYNAMIC 04 + /* Symbol is defined by a dynamic object. */ +#define SUNOS_DEF_DYNAMIC 010 + /* Symbol is a constructor symbol in a regular object. */ +#define SUNOS_CONSTRUCTOR 020 +}; + +/* The SunOS linker hash table. */ + +struct sunos_link_hash_table +{ + struct aout_link_hash_table root; + + /* The object which holds the dynamic sections. */ + bfd *dynobj; + + /* Whether we have created the dynamic sections. */ + bfd_boolean dynamic_sections_created; + + /* Whether we need the dynamic sections. */ + bfd_boolean dynamic_sections_needed; + + /* Whether we need the .got table. */ + bfd_boolean got_needed; + + /* The number of dynamic symbols. */ + size_t dynsymcount; + + /* The number of buckets in the hash table. */ + size_t bucketcount; + + /* The list of dynamic objects needed by dynamic objects included in + the link. */ + struct bfd_link_needed_list *needed; + + /* The offset of __GLOBAL_OFFSET_TABLE_ into the .got section. */ + bfd_vma got_base; +}; + +/* Routine to create an entry in an SunOS link hash table. */ + +static struct bfd_hash_entry * +sunos_link_hash_newfunc (struct bfd_hash_entry *entry, + struct bfd_hash_table *table, + const char *string) +{ + struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == NULL) + ret = bfd_hash_allocate (table, sizeof (* ret)); + if (ret == NULL) + return NULL; + + /* Call the allocation method of the superclass. */ + ret = ((struct sunos_link_hash_entry *) + NAME (aout, link_hash_newfunc) ((struct bfd_hash_entry *) ret, + table, string)); + if (ret != NULL) + { + /* Set local fields. */ + ret->dynindx = -1; + ret->dynstr_index = -1; + ret->got_offset = 0; + ret->plt_offset = 0; + ret->flags = 0; + } + + return (struct bfd_hash_entry *) ret; +} + +/* Create a SunOS link hash table. */ + +static struct bfd_link_hash_table * +sunos_link_hash_table_create (bfd *abfd) +{ + struct sunos_link_hash_table *ret; + bfd_size_type amt = sizeof (struct sunos_link_hash_table); + + ret = bfd_zmalloc (amt); + if (ret == NULL) + return NULL; + if (!NAME (aout, link_hash_table_init) (&ret->root, abfd, + sunos_link_hash_newfunc, + sizeof (struct sunos_link_hash_entry))) + { + free (ret); + return NULL; + } + + return &ret->root.root; +} + +/* Look up an entry in an SunOS link hash table. */ + +#define sunos_link_hash_lookup(table, string, create, copy, follow) \ + ((struct sunos_link_hash_entry *) \ + aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\ + (follow))) + +/* Traverse a SunOS link hash table. */ + +#define sunos_link_hash_traverse(table, func, info) \ + (aout_link_hash_traverse \ + (&(table)->root, \ + (bfd_boolean (*) (struct aout_link_hash_entry *, void *)) (func), \ + (info))) + +/* Get the SunOS link hash table from the info structure. This is + just a cast. */ + +#define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash)) + +/* Create the dynamic sections needed if we are linking against a + dynamic object, or if we are linking PIC compiled code. ABFD is a + bfd we can attach the dynamic sections to. The linker script will + look for these special sections names and put them in the right + place in the output file. See include/aout/sun4.h for more details + of the dynamic linking information. */ + +static bfd_boolean +sunos_create_dynamic_sections (bfd *abfd, + struct bfd_link_info *info, + bfd_boolean needed) +{ + asection *s; + + if (! sunos_hash_table (info)->dynamic_sections_created) + { + flagword flags; + + sunos_hash_table (info)->dynobj = abfd; + + flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY + | SEC_LINKER_CREATED); + + /* The .dynamic section holds the basic dynamic information: the + sun4_dynamic structure, the dynamic debugger information, and + the sun4_dynamic_link structure. */ + s = bfd_make_section_anyway_with_flags (abfd, ".dynamic", flags); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, 2)) + return FALSE; + + /* The .got section holds the global offset table. The address + is put in the ld_got field. */ + s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, 2)) + return FALSE; + + /* The .plt section holds the procedure linkage table. The + address is put in the ld_plt field. */ + s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags | SEC_CODE); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, 2)) + return FALSE; + + /* The .dynrel section holds the dynamic relocs. The address is + put in the ld_rel field. */ + s = bfd_make_section_anyway_with_flags (abfd, ".dynrel", + flags | SEC_READONLY); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, 2)) + return FALSE; + + /* The .hash section holds the dynamic hash table. The address + is put in the ld_hash field. */ + s = bfd_make_section_anyway_with_flags (abfd, ".hash", + flags | SEC_READONLY); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, 2)) + return FALSE; + + /* The .dynsym section holds the dynamic symbols. The address + is put in the ld_stab field. */ + s = bfd_make_section_anyway_with_flags (abfd, ".dynsym", + flags | SEC_READONLY); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, 2)) + return FALSE; + + /* The .dynstr section holds the dynamic symbol string table. + The address is put in the ld_symbols field. */ + s = bfd_make_section_anyway_with_flags (abfd, ".dynstr", + flags | SEC_READONLY); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, 2)) + return FALSE; + + sunos_hash_table (info)->dynamic_sections_created = TRUE; + } + + if ((needed && ! sunos_hash_table (info)->dynamic_sections_needed) + || info->shared) + { + bfd *dynobj; + + dynobj = sunos_hash_table (info)->dynobj; + + s = bfd_get_linker_section (dynobj, ".got"); + if (s->size == 0) + s->size = BYTES_IN_WORD; + + sunos_hash_table (info)->dynamic_sections_needed = TRUE; + sunos_hash_table (info)->got_needed = TRUE; + } + + return TRUE; +} + +/* Add dynamic symbols during a link. This is called by the a.out + backend linker for each object it encounters. */ + +static bfd_boolean +sunos_add_dynamic_symbols (bfd *abfd, + struct bfd_link_info *info, + struct external_nlist **symsp, + bfd_size_type *sym_countp, + char **stringsp) +{ + bfd *dynobj; + struct sunos_dynamic_info *dinfo; + unsigned long need; + + /* Make sure we have all the required sections. */ + if (info->output_bfd->xvec == abfd->xvec) + { + if (! sunos_create_dynamic_sections (abfd, info, + ((abfd->flags & DYNAMIC) != 0 + && !info->relocatable))) + return FALSE; + } + + /* There is nothing else to do for a normal object. */ + if ((abfd->flags & DYNAMIC) == 0) + return TRUE; + + dynobj = sunos_hash_table (info)->dynobj; + + /* We do not want to include the sections in a dynamic object in the + output file. We hack by simply clobbering the list of sections + in the BFD. This could be handled more cleanly by, say, a new + section flag; the existing SEC_NEVER_LOAD flag is not the one we + want, because that one still implies that the section takes up + space in the output file. If this is the first object we have + seen, we must preserve the dynamic sections we just created. */ + if (abfd != dynobj) + abfd->sections = NULL; + else + { + asection *s; + + for (s = abfd->sections; s != NULL; s = s->next) + { + if ((s->flags & SEC_LINKER_CREATED) == 0) + bfd_section_list_remove (abfd, s); + } + } + + /* The native linker seems to just ignore dynamic objects when -r is + used. */ + if (info->relocatable) + return TRUE; + + /* There's no hope of using a dynamic object which does not exactly + match the format of the output file. */ + if (info->output_bfd->xvec != abfd->xvec) + { + bfd_set_error (bfd_error_invalid_operation); + return FALSE; + } + + /* Make sure we have a .need and a .rules sections. These are only + needed if there really is a dynamic object in the link, so they + are not added by sunos_create_dynamic_sections. */ + if (bfd_get_section_by_name (dynobj, ".need") == NULL) + { + /* The .need section holds the list of names of shared objets + which must be included at runtime. The address of this + section is put in the ld_need field. */ + flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS + | SEC_IN_MEMORY | SEC_READONLY); + asection *s = bfd_make_section_with_flags (dynobj, ".need", flags); + if (s == NULL + || ! bfd_set_section_alignment (dynobj, s, 2)) + return FALSE; + } + + if (bfd_get_section_by_name (dynobj, ".rules") == NULL) + { + /* The .rules section holds the path to search for shared + objects. The address of this section is put in the ld_rules + field. */ + flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS + | SEC_IN_MEMORY | SEC_READONLY); + asection *s = bfd_make_section_with_flags (dynobj, ".rules", flags); + if (s == NULL + || ! bfd_set_section_alignment (dynobj, s, 2)) + return FALSE; + } + + /* Pick up the dynamic symbols and return them to the caller. */ + if (! sunos_slurp_dynamic_symtab (abfd)) + return FALSE; + + dinfo = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd); + *symsp = dinfo->dynsym; + *sym_countp = dinfo->dynsym_count; + *stringsp = dinfo->dynstr; + + /* Record information about any other objects needed by this one. */ + need = dinfo->dyninfo.ld_need; + while (need != 0) + { + bfd_byte buf[16]; + unsigned long name, flags; + unsigned short major_vno, minor_vno; + struct bfd_link_needed_list *needed, **pp; + char *namebuf, *p; + bfd_size_type alc; + bfd_byte b; + char *namecopy; + + if (bfd_seek (abfd, (file_ptr) need, SEEK_SET) != 0 + || bfd_bread (buf, (bfd_size_type) 16, abfd) != 16) + return FALSE; + + /* For the format of an ld_need entry, see aout/sun4.h. We + should probably define structs for this manipulation. */ + name = bfd_get_32 (abfd, buf); + flags = bfd_get_32 (abfd, buf + 4); + major_vno = (unsigned short) bfd_get_16 (abfd, buf + 8); + minor_vno = (unsigned short) bfd_get_16 (abfd, buf + 10); + need = bfd_get_32 (abfd, buf + 12); + + alc = sizeof (struct bfd_link_needed_list); + needed = bfd_alloc (abfd, alc); + if (needed == NULL) + return FALSE; + needed->by = abfd; + + /* We return the name as [-l]name[.maj][.min]. */ + alc = 30; + namebuf = bfd_malloc (alc + 1); + if (namebuf == NULL) + return FALSE; + p = namebuf; + + if ((flags & 0x80000000) != 0) + { + *p++ = '-'; + *p++ = 'l'; + } + if (bfd_seek (abfd, (file_ptr) name, SEEK_SET) != 0) + { + free (namebuf); + return FALSE; + } + + do + { + if (bfd_bread (&b, (bfd_size_type) 1, abfd) != 1) + { + free (namebuf); + return FALSE; + } + + if ((bfd_size_type) (p - namebuf) >= alc) + { + char *n; + + alc *= 2; + n = bfd_realloc (namebuf, alc + 1); + if (n == NULL) + { + free (namebuf); + return FALSE; + } + p = n + (p - namebuf); + namebuf = n; + } + + *p++ = b; + } + while (b != '\0'); + + if (major_vno == 0) + *p = '\0'; + else + { + char majbuf[30]; + char minbuf[30]; + + sprintf (majbuf, ".%d", major_vno); + if (minor_vno == 0) + minbuf[0] = '\0'; + else + sprintf (minbuf, ".%d", minor_vno); + + if ((p - namebuf) + strlen (majbuf) + strlen (minbuf) >= alc) + { + char *n; + + alc = (p - namebuf) + strlen (majbuf) + strlen (minbuf); + n = bfd_realloc (namebuf, alc + 1); + if (n == NULL) + { + free (namebuf); + return FALSE; + } + p = n + (p - namebuf); + namebuf = n; + } + + strcpy (p, majbuf); + strcat (p, minbuf); + } + + namecopy = bfd_alloc (abfd, (bfd_size_type) strlen (namebuf) + 1); + if (namecopy == NULL) + { + free (namebuf); + return FALSE; + } + strcpy (namecopy, namebuf); + free (namebuf); + needed->name = namecopy; + + needed->next = NULL; + + for (pp = &sunos_hash_table (info)->needed; + *pp != NULL; + pp = &(*pp)->next) + ; + *pp = needed; + } + + return TRUE; +} + +/* Function to add a single symbol to the linker hash table. This is + a wrapper around _bfd_generic_link_add_one_symbol which handles the + tweaking needed for dynamic linking support. */ + +static bfd_boolean +sunos_add_one_symbol (struct bfd_link_info *info, + bfd *abfd, + const char *name, + flagword flags, + asection *section, + bfd_vma value, + const char *string, + bfd_boolean copy, + bfd_boolean collect, + struct bfd_link_hash_entry **hashp) +{ + struct sunos_link_hash_entry *h; + int new_flag; + + if ((flags & (BSF_INDIRECT | BSF_WARNING | BSF_CONSTRUCTOR)) != 0 + || ! bfd_is_und_section (section)) + h = sunos_link_hash_lookup (sunos_hash_table (info), name, TRUE, copy, + FALSE); + else + h = ((struct sunos_link_hash_entry *) + bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE)); + if (h == NULL) + return FALSE; + + if (hashp != NULL) + *hashp = (struct bfd_link_hash_entry *) h; + + /* Treat a common symbol in a dynamic object as defined in the .bss + section of the dynamic object. We don't want to allocate space + for it in our process image. */ + if ((abfd->flags & DYNAMIC) != 0 + && bfd_is_com_section (section)) + section = obj_bsssec (abfd); + + if (! bfd_is_und_section (section) + && h->root.root.type != bfd_link_hash_new + && h->root.root.type != bfd_link_hash_undefined + && h->root.root.type != bfd_link_hash_defweak) + { + /* We are defining the symbol, and it is already defined. This + is a potential multiple definition error. */ + if ((abfd->flags & DYNAMIC) != 0) + { + /* The definition we are adding is from a dynamic object. + We do not want this new definition to override the + existing definition, so we pretend it is just a + reference. */ + section = bfd_und_section_ptr; + } + else if (h->root.root.type == bfd_link_hash_defined + && h->root.root.u.def.section->owner != NULL + && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) + { + /* The existing definition is from a dynamic object. We + want to override it with the definition we just found. + Clobber the existing definition. */ + h->root.root.type = bfd_link_hash_undefined; + h->root.root.u.undef.abfd = h->root.root.u.def.section->owner; + } + else if (h->root.root.type == bfd_link_hash_common + && (h->root.root.u.c.p->section->owner->flags & DYNAMIC) != 0) + { + /* The existing definition is from a dynamic object. We + want to override it with the definition we just found. + Clobber the existing definition. We can't set it to new, + because it is on the undefined list. */ + h->root.root.type = bfd_link_hash_undefined; + h->root.root.u.undef.abfd = h->root.root.u.c.p->section->owner; + } + } + + if ((abfd->flags & DYNAMIC) != 0 + && abfd->xvec == info->output_bfd->xvec + && (h->flags & SUNOS_CONSTRUCTOR) != 0) + /* The existing symbol is a constructor symbol, and this symbol + is from a dynamic object. A constructor symbol is actually a + definition, although the type will be bfd_link_hash_undefined + at this point. We want to ignore the definition from the + dynamic object. */ + section = bfd_und_section_ptr; + else if ((flags & BSF_CONSTRUCTOR) != 0 + && (abfd->flags & DYNAMIC) == 0 + && h->root.root.type == bfd_link_hash_defined + && h->root.root.u.def.section->owner != NULL + && (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) + /* The existing symbol is defined by a dynamic object, and this + is a constructor symbol. As above, we want to force the use + of the constructor symbol from the regular object. */ + h->root.root.type = bfd_link_hash_new; + + /* Do the usual procedure for adding a symbol. */ + if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, + value, string, copy, collect, + hashp)) + return FALSE; + + if (abfd->xvec == info->output_bfd->xvec) + { + /* Set a flag in the hash table entry indicating the type of + reference or definition we just found. Keep a count of the + number of dynamic symbols we find. A dynamic symbol is one + which is referenced or defined by both a regular object and a + shared object. */ + if ((abfd->flags & DYNAMIC) == 0) + { + if (bfd_is_und_section (section)) + new_flag = SUNOS_REF_REGULAR; + else + new_flag = SUNOS_DEF_REGULAR; + } + else + { + if (bfd_is_und_section (section)) + new_flag = SUNOS_REF_DYNAMIC; + else + new_flag = SUNOS_DEF_DYNAMIC; + } + h->flags |= new_flag; + + if (h->dynindx == -1 + && (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) + { + ++sunos_hash_table (info)->dynsymcount; + h->dynindx = -2; + } + + if ((flags & BSF_CONSTRUCTOR) != 0 + && (abfd->flags & DYNAMIC) == 0) + h->flags |= SUNOS_CONSTRUCTOR; + } + + return TRUE; +} + +extern const bfd_target MY (vec); + +/* Return the list of objects needed by BFD. */ + +struct bfd_link_needed_list * +bfd_sunos_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info) +{ + if (info->output_bfd->xvec != &MY (vec)) + return NULL; + return sunos_hash_table (info)->needed; +} + +/* Record an assignment made to a symbol by a linker script. We need + this in case some dynamic object refers to this symbol. */ + +bfd_boolean +bfd_sunos_record_link_assignment (bfd *output_bfd, + struct bfd_link_info *info, + const char *name) +{ + struct sunos_link_hash_entry *h; + + if (output_bfd->xvec != &MY(vec)) + return TRUE; + + /* This is called after we have examined all the input objects. If + the symbol does not exist, it merely means that no object refers + to it, and we can just ignore it at this point. */ + h = sunos_link_hash_lookup (sunos_hash_table (info), name, + FALSE, FALSE, FALSE); + if (h == NULL) + return TRUE; + + /* In a shared library, the __DYNAMIC symbol does not appear in the + dynamic symbol table. */ + if (! info->shared || strcmp (name, "__DYNAMIC") != 0) + { + h->flags |= SUNOS_DEF_REGULAR; + + if (h->dynindx == -1) + { + ++sunos_hash_table (info)->dynsymcount; + h->dynindx = -2; + } + } + + return TRUE; +} + +/* Scan the relocs for an input section using standard relocs. We + need to figure out what to do for each reloc against a dynamic + symbol. If the symbol is in the .text section, an entry is made in + the procedure linkage table. Note that this will do the wrong + thing if the symbol is actually data; I don't think the Sun 3 + native linker handles this case correctly either. If the symbol is + not in the .text section, we must preserve the reloc as a dynamic + reloc. FIXME: We should also handle the PIC relocs here by + building global offset table entries. */ + +static bfd_boolean +sunos_scan_std_relocs (struct bfd_link_info *info, + bfd *abfd, + asection *sec ATTRIBUTE_UNUSED, + const struct reloc_std_external *relocs, + bfd_size_type rel_size) +{ + bfd *dynobj; + asection *splt = NULL; + asection *srel = NULL; + struct sunos_link_hash_entry **sym_hashes; + const struct reloc_std_external *rel, *relend; + + /* We only know how to handle m68k plt entries. */ + if (bfd_get_arch (abfd) != bfd_arch_m68k) + { + bfd_set_error (bfd_error_invalid_target); + return FALSE; + } + + dynobj = NULL; + + sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); + + relend = relocs + rel_size / RELOC_STD_SIZE; + for (rel = relocs; rel < relend; rel++) + { + int r_index; + struct sunos_link_hash_entry *h; + + /* We only want relocs against external symbols. */ + if (bfd_header_big_endian (abfd)) + { + if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0) + continue; + } + else + { + if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0) + continue; + } + + /* Get the symbol index. */ + if (bfd_header_big_endian (abfd)) + r_index = ((rel->r_index[0] << 16) + | (rel->r_index[1] << 8) + | rel->r_index[2]); + else + r_index = ((rel->r_index[2] << 16) + | (rel->r_index[1] << 8) + | rel->r_index[0]); + + /* Get the hash table entry. */ + h = sym_hashes[r_index]; + if (h == NULL) + /* This should not normally happen, but it will in any case + be caught in the relocation phase. */ + continue; + + /* At this point common symbols have already been allocated, so + we don't have to worry about them. We need to consider that + we may have already seen this symbol and marked it undefined; + if the symbol is really undefined, then SUNOS_DEF_DYNAMIC + will be zero. */ + if (h->root.root.type != bfd_link_hash_defined + && h->root.root.type != bfd_link_hash_defweak + && h->root.root.type != bfd_link_hash_undefined) + continue; + + if ((h->flags & SUNOS_DEF_DYNAMIC) == 0 + || (h->flags & SUNOS_DEF_REGULAR) != 0) + continue; + + if (dynobj == NULL) + { + asection *sgot; + + if (! sunos_create_dynamic_sections (abfd, info, FALSE)) + return FALSE; + dynobj = sunos_hash_table (info)->dynobj; + splt = bfd_get_linker_section (dynobj, ".plt"); + srel = bfd_get_linker_section (dynobj, ".dynrel"); + BFD_ASSERT (splt != NULL && srel != NULL); + + sgot = bfd_get_linker_section (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + if (sgot->size == 0) + sgot->size = BYTES_IN_WORD; + sunos_hash_table (info)->got_needed = TRUE; + } + + BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0); + BFD_ASSERT (h->plt_offset != 0 + || ((h->root.root.type == bfd_link_hash_defined + || h->root.root.type == bfd_link_hash_defweak) + ? (h->root.root.u.def.section->owner->flags + & DYNAMIC) != 0 + : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); + + /* This reloc is against a symbol defined only by a dynamic + object. */ + if (h->root.root.type == bfd_link_hash_undefined) + /* Presumably this symbol was marked as being undefined by + an earlier reloc. */ + srel->size += RELOC_STD_SIZE; + else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0) + { + bfd *sub; + + /* This reloc is not in the .text section. It must be + copied into the dynamic relocs. We mark the symbol as + being undefined. */ + srel->size += RELOC_STD_SIZE; + sub = h->root.root.u.def.section->owner; + h->root.root.type = bfd_link_hash_undefined; + h->root.root.u.undef.abfd = sub; + } + else + { + /* This symbol is in the .text section. We must give it an + entry in the procedure linkage table, if we have not + already done so. We change the definition of the symbol + to the .plt section; this will cause relocs against it to + be handled correctly. */ + if (h->plt_offset == 0) + { + if (splt->size == 0) + splt->size = M68K_PLT_ENTRY_SIZE; + h->plt_offset = splt->size; + + if ((h->flags & SUNOS_DEF_REGULAR) == 0) + { + h->root.root.u.def.section = splt; + h->root.root.u.def.value = splt->size; + } + + splt->size += M68K_PLT_ENTRY_SIZE; + + /* We may also need a dynamic reloc entry. */ + if ((h->flags & SUNOS_DEF_REGULAR) == 0) + srel->size += RELOC_STD_SIZE; + } + } + } + + return TRUE; +} + +/* Scan the relocs for an input section using extended relocs. We + need to figure out what to do for each reloc against a dynamic + symbol. If the reloc is a WDISP30, and the symbol is in the .text + section, an entry is made in the procedure linkage table. + Otherwise, we must preserve the reloc as a dynamic reloc. */ + +static bfd_boolean +sunos_scan_ext_relocs (struct bfd_link_info *info, + bfd *abfd, + asection *sec ATTRIBUTE_UNUSED, + const struct reloc_ext_external *relocs, + bfd_size_type rel_size) +{ + bfd *dynobj; + struct sunos_link_hash_entry **sym_hashes; + const struct reloc_ext_external *rel, *relend; + asection *splt = NULL; + asection *sgot = NULL; + asection *srel = NULL; + bfd_size_type amt; + + /* We only know how to handle SPARC plt entries. */ + if (bfd_get_arch (abfd) != bfd_arch_sparc) + { + bfd_set_error (bfd_error_invalid_target); + return FALSE; + } + + dynobj = NULL; + + sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd); + + relend = relocs + rel_size / RELOC_EXT_SIZE; + for (rel = relocs; rel < relend; rel++) + { + unsigned int r_index; + int r_extern; + int r_type; + struct sunos_link_hash_entry *h = NULL; + + /* Swap in the reloc information. */ + if (bfd_header_big_endian (abfd)) + { + r_index = ((rel->r_index[0] << 16) + | (rel->r_index[1] << 8) + | rel->r_index[2]); + r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); + r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) + >> RELOC_EXT_BITS_TYPE_SH_BIG); + } + else + { + r_index = ((rel->r_index[2] << 16) + | (rel->r_index[1] << 8) + | rel->r_index[0]); + r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); + r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) + >> RELOC_EXT_BITS_TYPE_SH_LITTLE); + } + + if (r_extern) + { + h = sym_hashes[r_index]; + if (h == NULL) + { + /* This should not normally happen, but it will in any + case be caught in the relocation phase. */ + continue; + } + } + + /* If this is a base relative reloc, we need to make an entry in + the .got section. */ + if (r_type == RELOC_BASE10 + || r_type == RELOC_BASE13 + || r_type == RELOC_BASE22) + { + if (dynobj == NULL) + { + if (! sunos_create_dynamic_sections (abfd, info, FALSE)) + return FALSE; + dynobj = sunos_hash_table (info)->dynobj; + splt = bfd_get_linker_section (dynobj, ".plt"); + sgot = bfd_get_linker_section (dynobj, ".got"); + srel = bfd_get_linker_section (dynobj, ".dynrel"); + BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); + + /* Make sure we have an initial entry in the .got table. */ + if (sgot->size == 0) + sgot->size = BYTES_IN_WORD; + sunos_hash_table (info)->got_needed = TRUE; + } + + if (r_extern) + { + if (h->got_offset != 0) + continue; + + h->got_offset = sgot->size; + } + else + { + if (r_index >= bfd_get_symcount (abfd)) + /* This is abnormal, but should be caught in the + relocation phase. */ + continue; + + if (adata (abfd).local_got_offsets == NULL) + { + amt = bfd_get_symcount (abfd); + amt *= sizeof (bfd_vma); + adata (abfd).local_got_offsets = bfd_zalloc (abfd, amt); + if (adata (abfd).local_got_offsets == NULL) + return FALSE; + } + + if (adata (abfd).local_got_offsets[r_index] != 0) + continue; + + adata (abfd).local_got_offsets[r_index] = sgot->size; + } + + sgot->size += BYTES_IN_WORD; + + /* If we are making a shared library, or if the symbol is + defined by a dynamic object, we will need a dynamic reloc + entry. */ + if (info->shared + || (h != NULL + && (h->flags & SUNOS_DEF_DYNAMIC) != 0 + && (h->flags & SUNOS_DEF_REGULAR) == 0)) + srel->size += RELOC_EXT_SIZE; + + continue; + } + + /* Otherwise, we are only interested in relocs against symbols + defined in dynamic objects but not in regular objects. We + only need to consider relocs against external symbols. */ + if (! r_extern) + { + /* But, if we are creating a shared library, we need to + generate an absolute reloc. */ + if (info->shared) + { + if (dynobj == NULL) + { + if (! sunos_create_dynamic_sections (abfd, info, TRUE)) + return FALSE; + dynobj = sunos_hash_table (info)->dynobj; + splt = bfd_get_linker_section (dynobj, ".plt"); + sgot = bfd_get_linker_section (dynobj, ".got"); + srel = bfd_get_linker_section (dynobj, ".dynrel"); + BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); + } + + srel->size += RELOC_EXT_SIZE; + } + + continue; + } + + /* At this point common symbols have already been allocated, so + we don't have to worry about them. We need to consider that + we may have already seen this symbol and marked it undefined; + if the symbol is really undefined, then SUNOS_DEF_DYNAMIC + will be zero. */ + if (h->root.root.type != bfd_link_hash_defined + && h->root.root.type != bfd_link_hash_defweak + && h->root.root.type != bfd_link_hash_undefined) + continue; + + if (r_type != RELOC_JMP_TBL + && ! info->shared + && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 + || (h->flags & SUNOS_DEF_REGULAR) != 0)) + continue; + + if (r_type == RELOC_JMP_TBL + && ! info->shared + && (h->flags & SUNOS_DEF_DYNAMIC) == 0 + && (h->flags & SUNOS_DEF_REGULAR) == 0) + { + /* This symbol is apparently undefined. Don't do anything + here; just let the relocation routine report an undefined + symbol. */ + continue; + } + + if (strcmp (h->root.root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) + continue; + + if (dynobj == NULL) + { + if (! sunos_create_dynamic_sections (abfd, info, FALSE)) + return FALSE; + dynobj = sunos_hash_table (info)->dynobj; + splt = bfd_get_linker_section (dynobj, ".plt"); + sgot = bfd_get_linker_section (dynobj, ".got"); + srel = bfd_get_linker_section (dynobj, ".dynrel"); + BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); + + /* Make sure we have an initial entry in the .got table. */ + if (sgot->size == 0) + sgot->size = BYTES_IN_WORD; + sunos_hash_table (info)->got_needed = TRUE; + } + + BFD_ASSERT (r_type == RELOC_JMP_TBL + || info->shared + || (h->flags & SUNOS_REF_REGULAR) != 0); + BFD_ASSERT (r_type == RELOC_JMP_TBL + || info->shared + || h->plt_offset != 0 + || ((h->root.root.type == bfd_link_hash_defined + || h->root.root.type == bfd_link_hash_defweak) + ? (h->root.root.u.def.section->owner->flags + & DYNAMIC) != 0 + : (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0)); + + /* This reloc is against a symbol defined only by a dynamic + object, or it is a jump table reloc from PIC compiled code. */ + + if (r_type != RELOC_JMP_TBL + && h->root.root.type == bfd_link_hash_undefined) + /* Presumably this symbol was marked as being undefined by + an earlier reloc. */ + srel->size += RELOC_EXT_SIZE; + + else if (r_type != RELOC_JMP_TBL + && (h->root.root.u.def.section->flags & SEC_CODE) == 0) + { + bfd *sub; + + /* This reloc is not in the .text section. It must be + copied into the dynamic relocs. We mark the symbol as + being undefined. */ + srel->size += RELOC_EXT_SIZE; + if ((h->flags & SUNOS_DEF_REGULAR) == 0) + { + sub = h->root.root.u.def.section->owner; + h->root.root.type = bfd_link_hash_undefined; + h->root.root.u.undef.abfd = sub; + } + } + else + { + /* This symbol is in the .text section. We must give it an + entry in the procedure linkage table, if we have not + already done so. We change the definition of the symbol + to the .plt section; this will cause relocs against it to + be handled correctly. */ + if (h->plt_offset == 0) + { + if (splt->size == 0) + splt->size = SPARC_PLT_ENTRY_SIZE; + h->plt_offset = splt->size; + + if ((h->flags & SUNOS_DEF_REGULAR) == 0) + { + if (h->root.root.type == bfd_link_hash_undefined) + h->root.root.type = bfd_link_hash_defined; + h->root.root.u.def.section = splt; + h->root.root.u.def.value = splt->size; + } + + splt->size += SPARC_PLT_ENTRY_SIZE; + + /* We will also need a dynamic reloc entry, unless this + is a JMP_TBL reloc produced by linking PIC compiled + code, and we are not making a shared library. */ + if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) + srel->size += RELOC_EXT_SIZE; + } + + /* If we are creating a shared library, we need to copy over + any reloc other than a jump table reloc. */ + if (info->shared && r_type != RELOC_JMP_TBL) + srel->size += RELOC_EXT_SIZE; + } + } + + return TRUE; +} + +/* Scan the relocs for an input section. */ + +static bfd_boolean +sunos_scan_relocs (struct bfd_link_info *info, + bfd *abfd, + asection *sec, + bfd_size_type rel_size) +{ + void * relocs; + void * free_relocs = NULL; + + if (rel_size == 0) + return TRUE; + + if (! info->keep_memory) + relocs = free_relocs = bfd_malloc (rel_size); + else + { + struct aout_section_data_struct *n; + bfd_size_type amt = sizeof (struct aout_section_data_struct); + + n = bfd_alloc (abfd, amt); + if (n == NULL) + relocs = NULL; + else + { + set_aout_section_data (sec, n); + relocs = bfd_malloc (rel_size); + aout_section_data (sec)->relocs = relocs; + } + } + if (relocs == NULL) + return FALSE; + + if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0 + || bfd_bread (relocs, rel_size, abfd) != rel_size) + goto error_return; + + if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE) + { + if (! sunos_scan_std_relocs (info, abfd, sec, + (struct reloc_std_external *) relocs, + rel_size)) + goto error_return; + } + else + { + if (! sunos_scan_ext_relocs (info, abfd, sec, + (struct reloc_ext_external *) relocs, + rel_size)) + goto error_return; + } + + if (free_relocs != NULL) + free (free_relocs); + + return TRUE; + + error_return: + if (free_relocs != NULL) + free (free_relocs); + return FALSE; +} + +/* Build the hash table of dynamic symbols, and to mark as written all + symbols from dynamic objects which we do not plan to write out. */ + +static bfd_boolean +sunos_scan_dynamic_symbol (struct sunos_link_hash_entry *h, void * data) +{ + struct bfd_link_info *info = (struct bfd_link_info *) data; + + /* Set the written flag for symbols we do not want to write out as + part of the regular symbol table. This is all symbols which are + not defined in a regular object file. For some reason symbols + which are referenced by a regular object and defined by a dynamic + object do not seem to show up in the regular symbol table. It is + possible for a symbol to have only SUNOS_REF_REGULAR set here, it + is an undefined symbol which was turned into a common symbol + because it was found in an archive object which was not included + in the link. */ + if ((h->flags & SUNOS_DEF_REGULAR) == 0 + && (h->flags & SUNOS_DEF_DYNAMIC) != 0 + && strcmp (h->root.root.root.string, "__DYNAMIC") != 0) + h->root.written = TRUE; + + /* If this symbol is defined by a dynamic object and referenced by a + regular object, see whether we gave it a reasonable value while + scanning the relocs. */ + if ((h->flags & SUNOS_DEF_REGULAR) == 0 + && (h->flags & SUNOS_DEF_DYNAMIC) != 0 + && (h->flags & SUNOS_REF_REGULAR) != 0) + { + if ((h->root.root.type == bfd_link_hash_defined + || h->root.root.type == bfd_link_hash_defweak) + && ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0) + && h->root.root.u.def.section->output_section == NULL) + { + bfd *sub; + + /* This symbol is currently defined in a dynamic section + which is not being put into the output file. This + implies that there is no reloc against the symbol. I'm + not sure why this case would ever occur. In any case, we + change the symbol to be undefined. */ + sub = h->root.root.u.def.section->owner; + h->root.root.type = bfd_link_hash_undefined; + h->root.root.u.undef.abfd = sub; + } + } + + /* If this symbol is defined or referenced by a regular file, add it + to the dynamic symbols. */ + if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0) + { + asection *s; + size_t len; + bfd_byte *contents; + unsigned char *name; + unsigned long hash; + bfd *dynobj; + + BFD_ASSERT (h->dynindx == -2); + + dynobj = sunos_hash_table (info)->dynobj; + + h->dynindx = sunos_hash_table (info)->dynsymcount; + ++sunos_hash_table (info)->dynsymcount; + + len = strlen (h->root.root.root.string); + + /* We don't bother to construct a BFD hash table for the strings + which are the names of the dynamic symbols. Using a hash + table for the regular symbols is beneficial, because the + regular symbols includes the debugging symbols, which have + long names and are often duplicated in several object files. + There are no debugging symbols in the dynamic symbols. */ + s = bfd_get_linker_section (dynobj, ".dynstr"); + BFD_ASSERT (s != NULL); + contents = bfd_realloc (s->contents, s->size + len + 1); + if (contents == NULL) + return FALSE; + s->contents = contents; + + h->dynstr_index = s->size; + strcpy ((char *) contents + s->size, h->root.root.root.string); + s->size += len + 1; + + /* Add it to the dynamic hash table. */ + name = (unsigned char *) h->root.root.root.string; + hash = 0; + while (*name != '\0') + hash = (hash << 1) + *name++; + hash &= 0x7fffffff; + hash %= sunos_hash_table (info)->bucketcount; + + s = bfd_get_linker_section (dynobj, ".hash"); + BFD_ASSERT (s != NULL); + + if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1) + PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE); + else + { + bfd_vma next; + + next = GET_WORD (dynobj, + (s->contents + + hash * HASH_ENTRY_SIZE + + BYTES_IN_WORD)); + PUT_WORD (dynobj, s->size / HASH_ENTRY_SIZE, + s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD); + PUT_WORD (dynobj, h->dynindx, s->contents + s->size); + PUT_WORD (dynobj, next, s->contents + s->size + BYTES_IN_WORD); + s->size += HASH_ENTRY_SIZE; + } + } + + return TRUE; +} + +/* Set up the sizes and contents of the dynamic sections created in + sunos_add_dynamic_symbols. This is called by the SunOS linker + emulation before_allocation routine. We must set the sizes of the + sections before the linker sets the addresses of the various + sections. This unfortunately requires reading all the relocs so + that we can work out which ones need to become dynamic relocs. If + info->keep_memory is TRUE, we keep the relocs in memory; otherwise, + we discard them, and will read them again later. */ + +bfd_boolean +bfd_sunos_size_dynamic_sections (bfd *output_bfd, + struct bfd_link_info *info, + asection **sdynptr, + asection **sneedptr, + asection **srulesptr) +{ + bfd *dynobj; + bfd_size_type dynsymcount; + struct sunos_link_hash_entry *h; + asection *s; + size_t bucketcount; + bfd_size_type hashalloc; + size_t i; + bfd *sub; + + *sdynptr = NULL; + *sneedptr = NULL; + *srulesptr = NULL; + + if (info->relocatable) + return TRUE; + + if (output_bfd->xvec != &MY(vec)) + return TRUE; + + /* Look through all the input BFD's and read their relocs. It would + be better if we didn't have to do this, but there is no other way + to determine the number of dynamic relocs we need, and, more + importantly, there is no other way to know which symbols should + get an entry in the procedure linkage table. */ + for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) + { + if ((sub->flags & DYNAMIC) == 0 + && sub->xvec == output_bfd->xvec) + { + if (! sunos_scan_relocs (info, sub, obj_textsec (sub), + exec_hdr (sub)->a_trsize) + || ! sunos_scan_relocs (info, sub, obj_datasec (sub), + exec_hdr (sub)->a_drsize)) + return FALSE; + } + } + + dynobj = sunos_hash_table (info)->dynobj; + dynsymcount = sunos_hash_table (info)->dynsymcount; + + /* If there were no dynamic objects in the link, and we don't need + to build a global offset table, there is nothing to do here. */ + if (! sunos_hash_table (info)->dynamic_sections_needed + && ! sunos_hash_table (info)->got_needed) + return TRUE; + + /* If __GLOBAL_OFFSET_TABLE_ was mentioned, define it. */ + h = sunos_link_hash_lookup (sunos_hash_table (info), + "__GLOBAL_OFFSET_TABLE_", FALSE, FALSE, FALSE); + if (h != NULL && (h->flags & SUNOS_REF_REGULAR) != 0) + { + h->flags |= SUNOS_DEF_REGULAR; + if (h->dynindx == -1) + { + ++sunos_hash_table (info)->dynsymcount; + h->dynindx = -2; + } + s = bfd_get_linker_section (dynobj, ".got"); + BFD_ASSERT (s != NULL); + h->root.root.type = bfd_link_hash_defined; + h->root.root.u.def.section = s; + + /* If the .got section is more than 0x1000 bytes, we set + __GLOBAL_OFFSET_TABLE_ to be 0x1000 bytes into the section, + so that 13 bit relocations have a greater chance of working. */ + if (s->size >= 0x1000) + h->root.root.u.def.value = 0x1000; + else + h->root.root.u.def.value = 0; + + sunos_hash_table (info)->got_base = h->root.root.u.def.value; + } + + /* If there are any shared objects in the link, then we need to set + up the dynamic linking information. */ + if (sunos_hash_table (info)->dynamic_sections_needed) + { + *sdynptr = bfd_get_linker_section (dynobj, ".dynamic"); + + /* The .dynamic section is always the same size. */ + s = *sdynptr; + BFD_ASSERT (s != NULL); + s->size = (sizeof (struct external_sun4_dynamic) + + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE + + sizeof (struct external_sun4_dynamic_link)); + + /* Set the size of the .dynsym and .hash sections. We counted + the number of dynamic symbols as we read the input files. We + will build the dynamic symbol table (.dynsym) and the hash + table (.hash) when we build the final symbol table, because + until then we do not know the correct value to give the + symbols. We build the dynamic symbol string table (.dynstr) + in a traversal of the symbol table using + sunos_scan_dynamic_symbol. */ + s = bfd_get_linker_section (dynobj, ".dynsym"); + BFD_ASSERT (s != NULL); + s->size = dynsymcount * sizeof (struct external_nlist); + s->contents = bfd_alloc (output_bfd, s->size); + if (s->contents == NULL && s->size != 0) + return FALSE; + + /* The number of buckets is just the number of symbols divided + by four. To compute the final size of the hash table, we + must actually compute the hash table. Normally we need + exactly as many entries in the hash table as there are + dynamic symbols, but if some of the buckets are not used we + will need additional entries. In the worst case, every + symbol will hash to the same bucket, and we will need + BUCKETCOUNT - 1 extra entries. */ + if (dynsymcount >= 4) + bucketcount = dynsymcount / 4; + else if (dynsymcount > 0) + bucketcount = dynsymcount; + else + bucketcount = 1; + s = bfd_get_linker_section (dynobj, ".hash"); + BFD_ASSERT (s != NULL); + hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE; + s->contents = bfd_zalloc (dynobj, hashalloc); + if (s->contents == NULL && dynsymcount > 0) + return FALSE; + for (i = 0; i < bucketcount; i++) + PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE); + s->size = bucketcount * HASH_ENTRY_SIZE; + + sunos_hash_table (info)->bucketcount = bucketcount; + + /* Scan all the symbols, place them in the dynamic symbol table, + and build the dynamic hash table. We reuse dynsymcount as a + counter for the number of symbols we have added so far. */ + sunos_hash_table (info)->dynsymcount = 0; + sunos_link_hash_traverse (sunos_hash_table (info), + sunos_scan_dynamic_symbol, + (void *) info); + BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount); + + /* The SunOS native linker seems to align the total size of the + symbol strings to a multiple of 8. I don't know if this is + important, but it can't hurt much. */ + s = bfd_get_linker_section (dynobj, ".dynstr"); + BFD_ASSERT (s != NULL); + if ((s->size & 7) != 0) + { + bfd_size_type add; + bfd_byte *contents; + + add = 8 - (s->size & 7); + contents = bfd_realloc (s->contents, s->size + add); + if (contents == NULL) + return FALSE; + memset (contents + s->size, 0, (size_t) add); + s->contents = contents; + s->size += add; + } + } + + /* Now that we have worked out the sizes of the procedure linkage + table and the dynamic relocs, allocate storage for them. */ + s = bfd_get_linker_section (dynobj, ".plt"); + BFD_ASSERT (s != NULL); + if (s->size != 0) + { + s->contents = bfd_alloc (dynobj, s->size); + if (s->contents == NULL) + return FALSE; + + /* Fill in the first entry in the table. */ + switch (bfd_get_arch (dynobj)) + { + case bfd_arch_sparc: + memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE); + break; + + case bfd_arch_m68k: + memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE); + break; + + default: + abort (); + } + } + + s = bfd_get_linker_section (dynobj, ".dynrel"); + if (s->size != 0) + { + s->contents = bfd_alloc (dynobj, s->size); + if (s->contents == NULL) + return FALSE; + } + /* We use the reloc_count field to keep track of how many of the + relocs we have output so far. */ + s->reloc_count = 0; + + /* Make space for the global offset table. */ + s = bfd_get_linker_section (dynobj, ".got"); + s->contents = bfd_alloc (dynobj, s->size); + if (s->contents == NULL) + return FALSE; + + *sneedptr = bfd_get_section_by_name (dynobj, ".need"); + *srulesptr = bfd_get_section_by_name (dynobj, ".rules"); + + return TRUE; +} + +/* Link a dynamic object. We actually don't have anything to do at + this point. This entry point exists to prevent the regular linker + code from doing anything with the object. */ + +static bfd_boolean +sunos_link_dynamic_object (struct bfd_link_info *info ATTRIBUTE_UNUSED, + bfd *abfd ATTRIBUTE_UNUSED) +{ + return TRUE; +} + +/* Write out a dynamic symbol. This is called by the final traversal + over the symbol table. */ + +static bfd_boolean +sunos_write_dynamic_symbol (bfd *output_bfd, + struct bfd_link_info *info, + struct aout_link_hash_entry *harg) +{ + struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; + int type; + bfd_vma val; + asection *s; + struct external_nlist *outsym; + + /* If this symbol is in the procedure linkage table, fill in the + table entry. */ + if (h->plt_offset != 0) + { + bfd *dynobj; + asection *splt; + bfd_byte *p; + bfd_vma r_address; + + dynobj = sunos_hash_table (info)->dynobj; + splt = bfd_get_linker_section (dynobj, ".plt"); + p = splt->contents + h->plt_offset; + + s = bfd_get_linker_section (dynobj, ".dynrel"); + + r_address = (splt->output_section->vma + + splt->output_offset + + h->plt_offset); + + switch (bfd_get_arch (output_bfd)) + { + case bfd_arch_sparc: + if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) + { + bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p); + bfd_put_32 (output_bfd, + (SPARC_PLT_ENTRY_WORD1 + + (((- (h->plt_offset + 4) >> 2) + & 0x3fffffff))), + p + 4); + bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count, + p + 8); + } + else + { + val = (h->root.root.u.def.section->output_section->vma + + h->root.root.u.def.section->output_offset + + h->root.root.u.def.value); + bfd_put_32 (output_bfd, + SPARC_PLT_PIC_WORD0 + ((val >> 10) & 0x3fffff), + p); + bfd_put_32 (output_bfd, + SPARC_PLT_PIC_WORD1 + (val & 0x3ff), + p + 4); + bfd_put_32 (output_bfd, SPARC_PLT_PIC_WORD2, p + 8); + } + break; + + case bfd_arch_m68k: + if (! info->shared && (h->flags & SUNOS_DEF_REGULAR) != 0) + abort (); + bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p); + bfd_put_32 (output_bfd, (- (h->plt_offset + 2)), p + 2); + bfd_put_16 (output_bfd, (bfd_vma) s->reloc_count, p + 6); + r_address += 2; + break; + + default: + abort (); + } + + /* We also need to add a jump table reloc, unless this is the + result of a JMP_TBL reloc from PIC compiled code. */ + if (info->shared || (h->flags & SUNOS_DEF_REGULAR) == 0) + { + BFD_ASSERT (h->dynindx >= 0); + BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) + < s->size); + p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd); + if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE) + { + struct reloc_std_external *srel; + + srel = (struct reloc_std_external *) p; + PUT_WORD (output_bfd, r_address, srel->r_address); + if (bfd_header_big_endian (output_bfd)) + { + srel->r_index[0] = (bfd_byte) (h->dynindx >> 16); + srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); + srel->r_index[2] = (bfd_byte) (h->dynindx); + srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG + | RELOC_STD_BITS_JMPTABLE_BIG); + } + else + { + srel->r_index[2] = (bfd_byte) (h->dynindx >> 16); + srel->r_index[1] = (bfd_byte) (h->dynindx >> 8); + srel->r_index[0] = (bfd_byte)h->dynindx; + srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE + | RELOC_STD_BITS_JMPTABLE_LITTLE); + } + } + else + { + struct reloc_ext_external *erel; + + erel = (struct reloc_ext_external *) p; + PUT_WORD (output_bfd, r_address, erel->r_address); + if (bfd_header_big_endian (output_bfd)) + { + erel->r_index[0] = (bfd_byte) (h->dynindx >> 16); + erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); + erel->r_index[2] = (bfd_byte)h->dynindx; + erel->r_type[0] = + (RELOC_EXT_BITS_EXTERN_BIG + | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_BIG)); + } + else + { + erel->r_index[2] = (bfd_byte) (h->dynindx >> 16); + erel->r_index[1] = (bfd_byte) (h->dynindx >> 8); + erel->r_index[0] = (bfd_byte)h->dynindx; + erel->r_type[0] = + (RELOC_EXT_BITS_EXTERN_LITTLE + | (RELOC_JMP_SLOT << RELOC_EXT_BITS_TYPE_SH_LITTLE)); + } + PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend); + } + + ++s->reloc_count; + } + } + + /* If this is not a dynamic symbol, we don't have to do anything + else. We only check this after handling the PLT entry, because + we can have a PLT entry for a nondynamic symbol when linking PIC + compiled code from a regular object. */ + if (h->dynindx < 0) + return TRUE; + + switch (h->root.root.type) + { + default: + case bfd_link_hash_new: + abort (); + /* Avoid variable not initialized warnings. */ + return TRUE; + case bfd_link_hash_undefined: + type = N_UNDF | N_EXT; + val = 0; + break; + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + { + asection *sec; + asection *output_section; + + sec = h->root.root.u.def.section; + output_section = sec->output_section; + BFD_ASSERT (bfd_is_abs_section (output_section) + || output_section->owner == output_bfd); + if (h->plt_offset != 0 + && (h->flags & SUNOS_DEF_REGULAR) == 0) + { + type = N_UNDF | N_EXT; + val = 0; + } + else + { + if (output_section == obj_textsec (output_bfd)) + type = (h->root.root.type == bfd_link_hash_defined + ? N_TEXT + : N_WEAKT); + else if (output_section == obj_datasec (output_bfd)) + type = (h->root.root.type == bfd_link_hash_defined + ? N_DATA + : N_WEAKD); + else if (output_section == obj_bsssec (output_bfd)) + type = (h->root.root.type == bfd_link_hash_defined + ? N_BSS + : N_WEAKB); + else + type = (h->root.root.type == bfd_link_hash_defined + ? N_ABS + : N_WEAKA); + type |= N_EXT; + val = (h->root.root.u.def.value + + output_section->vma + + sec->output_offset); + } + } + break; + case bfd_link_hash_common: + type = N_UNDF | N_EXT; + val = h->root.root.u.c.size; + break; + case bfd_link_hash_undefweak: + type = N_WEAKU; + val = 0; + break; + case bfd_link_hash_indirect: + case bfd_link_hash_warning: + /* FIXME: Ignore these for now. The circumstances under which + they should be written out are not clear to me. */ + return TRUE; + } + + s = bfd_get_linker_section (sunos_hash_table (info)->dynobj, ".dynsym"); + BFD_ASSERT (s != NULL); + outsym = ((struct external_nlist *) + (s->contents + h->dynindx * EXTERNAL_NLIST_SIZE)); + + H_PUT_8 (output_bfd, type, outsym->e_type); + H_PUT_8 (output_bfd, 0, outsym->e_other); + + /* FIXME: The native linker doesn't use 0 for desc. It seems to use + one less than the desc value in the shared library, although that + seems unlikely. */ + H_PUT_16 (output_bfd, 0, outsym->e_desc); + + PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx); + PUT_WORD (output_bfd, val, outsym->e_value); + + return TRUE; +} + +/* This is called for each reloc against an external symbol. If this + is a reloc which are are going to copy as a dynamic reloc, then + copy it over, and tell the caller to not bother processing this + reloc. */ + +static bfd_boolean +sunos_check_dynamic_reloc (struct bfd_link_info *info, + bfd *input_bfd, + asection *input_section, + struct aout_link_hash_entry *harg, + void * reloc, + bfd_byte *contents ATTRIBUTE_UNUSED, + bfd_boolean *skip, + bfd_vma *relocationp) +{ + struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg; + bfd *dynobj; + bfd_boolean baserel; + bfd_boolean jmptbl; + bfd_boolean pcrel; + asection *s; + bfd_byte *p; + long indx; + + *skip = FALSE; + + dynobj = sunos_hash_table (info)->dynobj; + + if (h != NULL + && h->plt_offset != 0 + && (info->shared + || (h->flags & SUNOS_DEF_REGULAR) == 0)) + { + asection *splt; + + /* Redirect the relocation to the PLT entry. */ + splt = bfd_get_linker_section (dynobj, ".plt"); + *relocationp = (splt->output_section->vma + + splt->output_offset + + h->plt_offset); + } + + if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) + { + struct reloc_std_external *srel; + + srel = (struct reloc_std_external *) reloc; + if (bfd_header_big_endian (input_bfd)) + { + baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); + jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); + pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); + } + else + { + baserel = (0 != (srel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); + jmptbl = (0 != (srel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); + pcrel = (0 != (srel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); + } + } + else + { + struct reloc_ext_external *erel; + int r_type; + + erel = (struct reloc_ext_external *) reloc; + if (bfd_header_big_endian (input_bfd)) + r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) + >> RELOC_EXT_BITS_TYPE_SH_BIG); + else + r_type = ((erel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) + >> RELOC_EXT_BITS_TYPE_SH_LITTLE); + baserel = (r_type == RELOC_BASE10 + || r_type == RELOC_BASE13 + || r_type == RELOC_BASE22); + jmptbl = r_type == RELOC_JMP_TBL; + pcrel = (r_type == RELOC_DISP8 + || r_type == RELOC_DISP16 + || r_type == RELOC_DISP32 + || r_type == RELOC_WDISP30 + || r_type == RELOC_WDISP22); + /* We don't consider the PC10 and PC22 types to be PC relative, + because they are pcrel_offset. */ + } + + if (baserel) + { + bfd_vma *got_offsetp; + asection *sgot; + + if (h != NULL) + got_offsetp = &h->got_offset; + else if (adata (input_bfd).local_got_offsets == NULL) + got_offsetp = NULL; + else + { + struct reloc_std_external *srel; + int r_index; + + srel = (struct reloc_std_external *) reloc; + if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) + { + if (bfd_header_big_endian (input_bfd)) + r_index = ((srel->r_index[0] << 16) + | (srel->r_index[1] << 8) + | srel->r_index[2]); + else + r_index = ((srel->r_index[2] << 16) + | (srel->r_index[1] << 8) + | srel->r_index[0]); + } + else + { + struct reloc_ext_external *erel; + + erel = (struct reloc_ext_external *) reloc; + if (bfd_header_big_endian (input_bfd)) + r_index = ((erel->r_index[0] << 16) + | (erel->r_index[1] << 8) + | erel->r_index[2]); + else + r_index = ((erel->r_index[2] << 16) + | (erel->r_index[1] << 8) + | erel->r_index[0]); + } + + got_offsetp = adata (input_bfd).local_got_offsets + r_index; + } + + BFD_ASSERT (got_offsetp != NULL && *got_offsetp != 0); + + sgot = bfd_get_linker_section (dynobj, ".got"); + + /* We set the least significant bit to indicate whether we have + already initialized the GOT entry. */ + if ((*got_offsetp & 1) == 0) + { + if (h == NULL + || (! info->shared + && ((h->flags & SUNOS_DEF_DYNAMIC) == 0 + || (h->flags & SUNOS_DEF_REGULAR) != 0))) + PUT_WORD (dynobj, *relocationp, sgot->contents + *got_offsetp); + else + PUT_WORD (dynobj, 0, sgot->contents + *got_offsetp); + + if (info->shared + || (h != NULL + && (h->flags & SUNOS_DEF_DYNAMIC) != 0 + && (h->flags & SUNOS_DEF_REGULAR) == 0)) + { + /* We need to create a GLOB_DAT or 32 reloc to tell the + dynamic linker to fill in this entry in the table. */ + + s = bfd_get_linker_section (dynobj, ".dynrel"); + BFD_ASSERT (s != NULL); + BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) + < s->size); + + p = (s->contents + + s->reloc_count * obj_reloc_entry_size (dynobj)); + + if (h != NULL) + indx = h->dynindx; + else + indx = 0; + + if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) + { + struct reloc_std_external *srel; + + srel = (struct reloc_std_external *) p; + PUT_WORD (dynobj, + (*got_offsetp + + sgot->output_section->vma + + sgot->output_offset), + srel->r_address); + if (bfd_header_big_endian (dynobj)) + { + srel->r_index[0] = (bfd_byte) (indx >> 16); + srel->r_index[1] = (bfd_byte) (indx >> 8); + srel->r_index[2] = (bfd_byte)indx; + if (h == NULL) + srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_BIG; + else + srel->r_type[0] = + (RELOC_STD_BITS_EXTERN_BIG + | RELOC_STD_BITS_BASEREL_BIG + | RELOC_STD_BITS_RELATIVE_BIG + | (2 << RELOC_STD_BITS_LENGTH_SH_BIG)); + } + else + { + srel->r_index[2] = (bfd_byte) (indx >> 16); + srel->r_index[1] = (bfd_byte) (indx >> 8); + srel->r_index[0] = (bfd_byte)indx; + if (h == NULL) + srel->r_type[0] = 2 << RELOC_STD_BITS_LENGTH_SH_LITTLE; + else + srel->r_type[0] = + (RELOC_STD_BITS_EXTERN_LITTLE + | RELOC_STD_BITS_BASEREL_LITTLE + | RELOC_STD_BITS_RELATIVE_LITTLE + | (2 << RELOC_STD_BITS_LENGTH_SH_LITTLE)); + } + } + else + { + struct reloc_ext_external *erel; + + erel = (struct reloc_ext_external *) p; + PUT_WORD (dynobj, + (*got_offsetp + + sgot->output_section->vma + + sgot->output_offset), + erel->r_address); + if (bfd_header_big_endian (dynobj)) + { + erel->r_index[0] = (bfd_byte) (indx >> 16); + erel->r_index[1] = (bfd_byte) (indx >> 8); + erel->r_index[2] = (bfd_byte)indx; + if (h == NULL) + erel->r_type[0] = + RELOC_32 << RELOC_EXT_BITS_TYPE_SH_BIG; + else + erel->r_type[0] = + (RELOC_EXT_BITS_EXTERN_BIG + | (RELOC_GLOB_DAT << RELOC_EXT_BITS_TYPE_SH_BIG)); + } + else + { + erel->r_index[2] = (bfd_byte) (indx >> 16); + erel->r_index[1] = (bfd_byte) (indx >> 8); + erel->r_index[0] = (bfd_byte)indx; + if (h == NULL) + erel->r_type[0] = + RELOC_32 << RELOC_EXT_BITS_TYPE_SH_LITTLE; + else + erel->r_type[0] = + (RELOC_EXT_BITS_EXTERN_LITTLE + | (RELOC_GLOB_DAT + << RELOC_EXT_BITS_TYPE_SH_LITTLE)); + } + PUT_WORD (dynobj, 0, erel->r_addend); + } + + ++s->reloc_count; + } + + *got_offsetp |= 1; + } + + *relocationp = (sgot->vma + + (*got_offsetp &~ (bfd_vma) 1) + - sunos_hash_table (info)->got_base); + + /* There is nothing else to do for a base relative reloc. */ + return TRUE; + } + + if (! sunos_hash_table (info)->dynamic_sections_needed) + return TRUE; + if (! info->shared) + { + if (h == NULL + || h->dynindx == -1 + || h->root.root.type != bfd_link_hash_undefined + || (h->flags & SUNOS_DEF_REGULAR) != 0 + || (h->flags & SUNOS_DEF_DYNAMIC) == 0 + || (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0) + return TRUE; + } + else + { + if (h != NULL + && (h->dynindx == -1 + || jmptbl + || strcmp (h->root.root.root.string, + "__GLOBAL_OFFSET_TABLE_") == 0)) + return TRUE; + } + + /* It looks like this is a reloc we are supposed to copy. */ + + s = bfd_get_linker_section (dynobj, ".dynrel"); + BFD_ASSERT (s != NULL); + BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) < s->size); + + p = s->contents + s->reloc_count * obj_reloc_entry_size (dynobj); + + /* Copy the reloc over. */ + memcpy (p, reloc, obj_reloc_entry_size (dynobj)); + + if (h != NULL) + indx = h->dynindx; + else + indx = 0; + + /* Adjust the address and symbol index. */ + if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE) + { + struct reloc_std_external *srel; + + srel = (struct reloc_std_external *) p; + PUT_WORD (dynobj, + (GET_WORD (dynobj, srel->r_address) + + input_section->output_section->vma + + input_section->output_offset), + srel->r_address); + if (bfd_header_big_endian (dynobj)) + { + srel->r_index[0] = (bfd_byte) (indx >> 16); + srel->r_index[1] = (bfd_byte) (indx >> 8); + srel->r_index[2] = (bfd_byte)indx; + } + else + { + srel->r_index[2] = (bfd_byte) (indx >> 16); + srel->r_index[1] = (bfd_byte) (indx >> 8); + srel->r_index[0] = (bfd_byte)indx; + } + /* FIXME: We may have to change the addend for a PC relative + reloc. */ + } + else + { + struct reloc_ext_external *erel; + + erel = (struct reloc_ext_external *) p; + PUT_WORD (dynobj, + (GET_WORD (dynobj, erel->r_address) + + input_section->output_section->vma + + input_section->output_offset), + erel->r_address); + if (bfd_header_big_endian (dynobj)) + { + erel->r_index[0] = (bfd_byte) (indx >> 16); + erel->r_index[1] = (bfd_byte) (indx >> 8); + erel->r_index[2] = (bfd_byte)indx; + } + else + { + erel->r_index[2] = (bfd_byte) (indx >> 16); + erel->r_index[1] = (bfd_byte) (indx >> 8); + erel->r_index[0] = (bfd_byte)indx; + } + if (pcrel && h != NULL) + { + /* Adjust the addend for the change in address. */ + PUT_WORD (dynobj, + (GET_WORD (dynobj, erel->r_addend) + - (input_section->output_section->vma + + input_section->output_offset + - input_section->vma)), + erel->r_addend); + } + } + + ++s->reloc_count; + + if (h != NULL) + *skip = TRUE; + + return TRUE; +} + +/* Finish up the dynamic linking information. */ + +static bfd_boolean +sunos_finish_dynamic_link (bfd *abfd, struct bfd_link_info *info) +{ + bfd *dynobj; + asection *o; + asection *s; + asection *sdyn; + + if (! sunos_hash_table (info)->dynamic_sections_needed + && ! sunos_hash_table (info)->got_needed) + return TRUE; + + dynobj = sunos_hash_table (info)->dynobj; + + sdyn = bfd_get_linker_section (dynobj, ".dynamic"); + BFD_ASSERT (sdyn != NULL); + + /* Finish up the .need section. The linker emulation code filled it + in, but with offsets from the start of the section instead of + real addresses. Now that we know the section location, we can + fill in the final values. */ + s = bfd_get_section_by_name (dynobj, ".need"); + if (s != NULL && s->size != 0) + { + file_ptr filepos; + bfd_byte *p; + + filepos = s->output_section->filepos + s->output_offset; + p = s->contents; + while (1) + { + bfd_vma val; + + PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p); + val = GET_WORD (dynobj, p + 12); + if (val == 0) + break; + PUT_WORD (dynobj, val + filepos, p + 12); + p += 16; + } + } + + /* The first entry in the .got section is the address of the + dynamic information, unless this is a shared library. */ + s = bfd_get_linker_section (dynobj, ".got"); + BFD_ASSERT (s != NULL); + if (info->shared || sdyn->size == 0) + PUT_WORD (dynobj, 0, s->contents); + else + PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset, + s->contents); + + for (o = dynobj->sections; o != NULL; o = o->next) + { + if ((o->flags & SEC_HAS_CONTENTS) != 0 + && o->contents != NULL) + { + BFD_ASSERT (o->output_section != NULL + && o->output_section->owner == abfd); + if (! bfd_set_section_contents (abfd, o->output_section, + o->contents, + (file_ptr) o->output_offset, + o->size)) + return FALSE; + } + } + + if (sdyn->size > 0) + { + struct external_sun4_dynamic esd; + struct external_sun4_dynamic_link esdl; + file_ptr pos; + + /* Finish up the dynamic link information. */ + PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version); + PUT_WORD (dynobj, + sdyn->output_section->vma + sdyn->output_offset + sizeof esd, + esd.ldd); + PUT_WORD (dynobj, + (sdyn->output_section->vma + + sdyn->output_offset + + sizeof esd + + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE), + esd.ld); + + if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd, + (file_ptr) sdyn->output_offset, + (bfd_size_type) sizeof esd)) + return FALSE; + + PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded); + + s = bfd_get_section_by_name (dynobj, ".need"); + if (s == NULL || s->size == 0) + PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need); + else + PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, + esdl.ld_need); + + s = bfd_get_section_by_name (dynobj, ".rules"); + if (s == NULL || s->size == 0) + PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules); + else + PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, + esdl.ld_rules); + + s = bfd_get_linker_section (dynobj, ".got"); + BFD_ASSERT (s != NULL); + PUT_WORD (dynobj, s->output_section->vma + s->output_offset, + esdl.ld_got); + + s = bfd_get_linker_section (dynobj, ".plt"); + BFD_ASSERT (s != NULL); + PUT_WORD (dynobj, s->output_section->vma + s->output_offset, + esdl.ld_plt); + PUT_WORD (dynobj, s->size, esdl.ld_plt_sz); + + s = bfd_get_linker_section (dynobj, ".dynrel"); + BFD_ASSERT (s != NULL); + BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) + == s->size); + PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, + esdl.ld_rel); + + s = bfd_get_linker_section (dynobj, ".hash"); + BFD_ASSERT (s != NULL); + PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, + esdl.ld_hash); + + s = bfd_get_linker_section (dynobj, ".dynsym"); + BFD_ASSERT (s != NULL); + PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, + esdl.ld_stab); + + PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash); + + PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount, + esdl.ld_buckets); + + s = bfd_get_linker_section (dynobj, ".dynstr"); + BFD_ASSERT (s != NULL); + PUT_WORD (dynobj, s->output_section->filepos + s->output_offset, + esdl.ld_symbols); + PUT_WORD (dynobj, s->size, esdl.ld_symb_size); + + /* The size of the text area is the size of the .text section + rounded up to a page boundary. FIXME: Should the page size be + conditional on something? */ + PUT_WORD (dynobj, + BFD_ALIGN (obj_textsec (abfd)->size, 0x2000), + esdl.ld_text); + + pos = sdyn->output_offset; + pos += sizeof esd + EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE; + if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl, + pos, (bfd_size_type) sizeof esdl)) + return FALSE; + + abfd->flags |= DYNAMIC; + } + + return TRUE; +} |