diff options
Diffstat (limited to 'bfd/cofflink.c')
| -rw-r--r-- | bfd/cofflink.c | 3036 |
1 files changed, 0 insertions, 3036 deletions
diff --git a/bfd/cofflink.c b/bfd/cofflink.c deleted file mode 100644 index 47716ac2eae..00000000000 --- a/bfd/cofflink.c +++ /dev/null @@ -1,3036 +0,0 @@ -/* COFF specific linker code. - Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 - Free Software Foundation, Inc. - Written by Ian Lance Taylor, 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -/* This file contains the COFF backend linker code. */ - -#include "bfd.h" -#include "sysdep.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "coff/internal.h" -#include "libcoff.h" - -static boolean coff_link_add_object_symbols - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean coff_link_check_archive_element - PARAMS ((bfd *, struct bfd_link_info *, boolean *)); -static boolean coff_link_check_ar_symbols - PARAMS ((bfd *, struct bfd_link_info *, boolean *)); -static boolean coff_link_add_symbols PARAMS ((bfd *, struct bfd_link_info *)); -static char *dores_com PARAMS ((char *, bfd *, int)); -static char *get_name PARAMS ((char *, char **)); -static int process_embedded_commands - PARAMS ((bfd *, struct bfd_link_info *, bfd *)); -static void mark_relocs PARAMS ((struct coff_final_link_info *, bfd *)); - -/* Return true if SYM is a weak, external symbol. */ -#define IS_WEAK_EXTERNAL(abfd, sym) \ - ((sym).n_sclass == C_WEAKEXT \ - || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK)) - -/* Return true if SYM is an external symbol. */ -#define IS_EXTERNAL(abfd, sym) \ - ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym)) - -/* Define macros so that the ISFCN, et. al., macros work correctly. - These macros are defined in include/coff/internal.h in terms of - N_TMASK, etc. These definitions require a user to define local - variables with the appropriate names, and with values from the - coff_data (abfd) structure. */ - -#define N_TMASK n_tmask -#define N_BTSHFT n_btshft -#define N_BTMASK n_btmask - -/* Create an entry in a COFF linker hash table. */ - -struct bfd_hash_entry * -_bfd_coff_link_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct coff_link_hash_entry *) NULL) - ret = ((struct coff_link_hash_entry *) - bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry))); - if (ret == (struct coff_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct coff_link_hash_entry *) - _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != (struct coff_link_hash_entry *) NULL) - { - /* Set local fields. */ - ret->indx = -1; - ret->type = T_NULL; - ret->class = C_NULL; - ret->numaux = 0; - ret->auxbfd = NULL; - ret->aux = NULL; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Initialize a COFF linker hash table. */ - -boolean -_bfd_coff_link_hash_table_init (table, abfd, newfunc) - struct coff_link_hash_table *table; - bfd *abfd; - struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, - struct bfd_hash_table *, - const char *)); -{ - table->stab_info = NULL; - return _bfd_link_hash_table_init (&table->root, abfd, newfunc); -} - -/* Create a COFF linker hash table. */ - -struct bfd_link_hash_table * -_bfd_coff_link_hash_table_create (abfd) - bfd *abfd; -{ - struct coff_link_hash_table *ret; - - ret = ((struct coff_link_hash_table *) - bfd_alloc (abfd, sizeof (struct coff_link_hash_table))); - if (ret == NULL) - return NULL; - if (! _bfd_coff_link_hash_table_init (ret, abfd, - _bfd_coff_link_hash_newfunc)) - { - bfd_release (abfd, ret); - return (struct bfd_link_hash_table *) NULL; - } - return &ret->root; -} - -/* Create an entry in a COFF debug merge hash table. */ - -struct bfd_hash_entry * -_bfd_coff_debug_merge_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct coff_debug_merge_hash_entry *ret = - (struct coff_debug_merge_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct coff_debug_merge_hash_entry *) NULL) - ret = ((struct coff_debug_merge_hash_entry *) - bfd_hash_allocate (table, - sizeof (struct coff_debug_merge_hash_entry))); - if (ret == (struct coff_debug_merge_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct coff_debug_merge_hash_entry *) - bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); - if (ret != (struct coff_debug_merge_hash_entry *) NULL) - { - /* Set local fields. */ - ret->types = NULL; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Given a COFF BFD, add symbols to the global hash table as - appropriate. */ - -boolean -_bfd_coff_link_add_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - switch (bfd_get_format (abfd)) - { - case bfd_object: - return coff_link_add_object_symbols (abfd, info); - case bfd_archive: - return (_bfd_generic_link_add_archive_symbols - (abfd, info, coff_link_check_archive_element)); - default: - bfd_set_error (bfd_error_wrong_format); - return false; - } -} - -/* Add symbols from a COFF object file. */ - -static boolean -coff_link_add_object_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - if (! _bfd_coff_get_external_symbols (abfd)) - return false; - if (! coff_link_add_symbols (abfd, info)) - return false; - - if (! info->keep_memory) - { - if (! _bfd_coff_free_symbols (abfd)) - return false; - } - return true; -} - -/* Check a single archive element to see if we need to include it in - the link. *PNEEDED is set according to whether this element is - needed in the link or not. This is called via - _bfd_generic_link_add_archive_symbols. */ - -static boolean -coff_link_check_archive_element (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - if (! _bfd_coff_get_external_symbols (abfd)) - return false; - - if (! coff_link_check_ar_symbols (abfd, info, pneeded)) - return false; - - if (*pneeded) - { - if (! coff_link_add_symbols (abfd, info)) - return false; - } - - if (! info->keep_memory || ! *pneeded) - { - if (! _bfd_coff_free_symbols (abfd)) - return false; - } - - return true; -} - -/* Look through the symbols to see if this object file should be - included in the link. */ - -static boolean -coff_link_check_ar_symbols (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - bfd_size_type symesz; - bfd_byte *esym; - bfd_byte *esym_end; - - *pneeded = false; - - symesz = bfd_coff_symesz (abfd); - esym = (bfd_byte *) obj_coff_external_syms (abfd); - esym_end = esym + obj_raw_syment_count (abfd) * symesz; - while (esym < esym_end) - { - struct internal_syment sym; - enum coff_symbol_classification classification; - - bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); - - classification = bfd_coff_classify_symbol (abfd, &sym); - if (classification == COFF_SYMBOL_GLOBAL - || classification == COFF_SYMBOL_COMMON) - { - const char *name; - char buf[SYMNMLEN + 1]; - struct bfd_link_hash_entry *h; - - /* This symbol is externally visible, and is defined by this - object file. */ - - name = _bfd_coff_internal_syment_name (abfd, &sym, buf); - if (name == NULL) - return false; - h = bfd_link_hash_lookup (info->hash, name, false, false, true); - - /* We are only interested in symbols that are currently - undefined. If a symbol is currently known to be common, - COFF linkers do not bring in an object file which defines - it. */ - if (h != (struct bfd_link_hash_entry *) NULL - && h->type == bfd_link_hash_undefined) - { - if (! (*info->callbacks->add_archive_element) (info, abfd, name)) - return false; - *pneeded = true; - return true; - } - } - - esym += (sym.n_numaux + 1) * symesz; - } - - /* We do not need this object file. */ - return true; -} - -/* Add all the symbols from an object file to the hash table. */ - -static boolean -coff_link_add_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - unsigned int n_tmask = coff_data (abfd)->local_n_tmask; - unsigned int n_btshft = coff_data (abfd)->local_n_btshft; - unsigned int n_btmask = coff_data (abfd)->local_n_btmask; - boolean keep_syms; - boolean default_copy; - bfd_size_type symcount; - struct coff_link_hash_entry **sym_hash; - bfd_size_type symesz; - bfd_byte *esym; - bfd_byte *esym_end; - - /* Keep the symbols during this function, in case the linker needs - to read the generic symbols in order to report an error message. */ - keep_syms = obj_coff_keep_syms (abfd); - obj_coff_keep_syms (abfd) = true; - - if (info->keep_memory) - default_copy = false; - else - default_copy = true; - - symcount = obj_raw_syment_count (abfd); - - /* We keep a list of the linker hash table entries that correspond - to particular symbols. */ - sym_hash = ((struct coff_link_hash_entry **) - bfd_alloc (abfd, - ((size_t) symcount - * sizeof (struct coff_link_hash_entry *)))); - if (sym_hash == NULL && symcount != 0) - goto error_return; - obj_coff_sym_hashes (abfd) = sym_hash; - memset (sym_hash, 0, - (size_t) symcount * sizeof (struct coff_link_hash_entry *)); - - symesz = bfd_coff_symesz (abfd); - BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); - esym = (bfd_byte *) obj_coff_external_syms (abfd); - esym_end = esym + symcount * symesz; - while (esym < esym_end) - { - struct internal_syment sym; - enum coff_symbol_classification classification; - boolean copy; - - bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); - - classification = bfd_coff_classify_symbol (abfd, &sym); - if (classification != COFF_SYMBOL_LOCAL) - { - const char *name; - char buf[SYMNMLEN + 1]; - flagword flags; - asection *section; - bfd_vma value; - boolean addit; - - /* This symbol is externally visible. */ - - name = _bfd_coff_internal_syment_name (abfd, &sym, buf); - if (name == NULL) - goto error_return; - - /* We must copy the name into memory if we got it from the - syment itself, rather than the string table. */ - copy = default_copy; - if (sym._n._n_n._n_zeroes != 0 - || sym._n._n_n._n_offset == 0) - copy = true; - - value = sym.n_value; - - switch (classification) - { - default: - abort (); - - case COFF_SYMBOL_GLOBAL: - flags = BSF_EXPORT | BSF_GLOBAL; - section = coff_section_from_bfd_index (abfd, sym.n_scnum); - if (! obj_pe (abfd)) - value -= section->vma; - break; - - case COFF_SYMBOL_UNDEFINED: - flags = 0; - section = bfd_und_section_ptr; - break; - - case COFF_SYMBOL_COMMON: - flags = BSF_GLOBAL; - section = bfd_com_section_ptr; - break; - - case COFF_SYMBOL_PE_SECTION: - flags = BSF_SECTION_SYM | BSF_GLOBAL; - section = coff_section_from_bfd_index (abfd, sym.n_scnum); - break; - } - - if (IS_WEAK_EXTERNAL (abfd, sym)) - flags = BSF_WEAK; - - addit = true; - - /* In the PE format, section symbols actually refer to the - start of the output section. We handle them specially - here. */ - if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) - { - *sym_hash = coff_link_hash_lookup (coff_hash_table (info), - name, false, copy, false); - if (*sym_hash != NULL) - { - if (((*sym_hash)->coff_link_hash_flags - & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0 - && (*sym_hash)->root.type != bfd_link_hash_undefined - && (*sym_hash)->root.type != bfd_link_hash_undefweak) - (*_bfd_error_handler) - ("Warning: symbol `%s' is both section and non-section", - name); - - addit = false; - } - } - - /* The Microsoft Visual C compiler does string pooling by - hashing the constants to an internal symbol name, and - relying on the the linker comdat support to discard - duplicate names. However, if one string is a literal and - one is a data initializer, one will end up in the .data - section and one will end up in the .rdata section. The - Microsoft linker will combine them into the .data - section, which seems to be wrong since it might cause the - literal to change. - - As long as there are no external references to the - symbols, which there shouldn't be, we can treat the .data - and .rdata instances as separate symbols. The comdat - code in the linker will do the appropriate merging. Here - we avoid getting a multiple definition error for one of - these special symbols. - - FIXME: I don't think this will work in the case where - there are two object files which use the constants as a - literal and two object files which use it as a data - initializer. One or the other of the second object files - is going to wind up with an inappropriate reference. */ - if (obj_pe (abfd) - && (classification == COFF_SYMBOL_GLOBAL - || classification == COFF_SYMBOL_PE_SECTION) - && section->comdat != NULL - && strncmp (name, "??_", 3) == 0 - && strcmp (name, section->comdat->name) == 0) - { - if (*sym_hash == NULL) - *sym_hash = coff_link_hash_lookup (coff_hash_table (info), - name, false, copy, false); - if (*sym_hash != NULL - && (*sym_hash)->root.type == bfd_link_hash_defined - && (*sym_hash)->root.u.def.section->comdat != NULL - && strcmp ((*sym_hash)->root.u.def.section->comdat->name, - section->comdat->name) == 0) - addit = false; - } - - if (addit) - { - if (! (bfd_coff_link_add_one_symbol - (info, abfd, name, flags, section, value, - (const char *) NULL, copy, false, - (struct bfd_link_hash_entry **) sym_hash))) - goto error_return; - } - - if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0) - (*sym_hash)->coff_link_hash_flags |= - COFF_LINK_HASH_PE_SECTION_SYMBOL; - - /* Limit the alignment of a common symbol to the possible - alignment of a section. There is no point to permitting - a higher alignment for a common symbol: we can not - guarantee it, and it may cause us to allocate extra space - in the common section. */ - if (section == bfd_com_section_ptr - && (*sym_hash)->root.type == bfd_link_hash_common - && ((*sym_hash)->root.u.c.p->alignment_power - > bfd_coff_default_section_alignment_power (abfd))) - (*sym_hash)->root.u.c.p->alignment_power - = bfd_coff_default_section_alignment_power (abfd); - - if (info->hash->creator->flavour == bfd_get_flavour (abfd)) - { - /* If we don't have any symbol information currently in - the hash table, or if we are looking at a symbol - definition, then update the symbol class and type in - the hash table. */ - if (((*sym_hash)->class == C_NULL - && (*sym_hash)->type == T_NULL) - || sym.n_scnum != 0 - || (sym.n_value != 0 - && (*sym_hash)->root.type != bfd_link_hash_defined - && (*sym_hash)->root.type != bfd_link_hash_defweak)) - { - (*sym_hash)->class = sym.n_sclass; - if (sym.n_type != T_NULL) - { - /* We want to warn if the type changed, but not - if it changed from an unspecified type. - Testing the whole type byte may work, but the - change from (e.g.) a function of unspecified - type to function of known type also wants to - skip the warning. */ - if ((*sym_hash)->type != T_NULL - && (*sym_hash)->type != sym.n_type - && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type) - && (BTYPE ((*sym_hash)->type) == T_NULL - || BTYPE (sym.n_type) == T_NULL))) - (*_bfd_error_handler) - (_("Warning: type of symbol `%s' changed from %d to %d in %s"), - name, (*sym_hash)->type, sym.n_type, - bfd_get_filename (abfd)); - - /* We don't want to change from a meaningful - base type to a null one, but if we know - nothing, take what little we might now know. */ - if (BTYPE (sym.n_type) != T_NULL - || (*sym_hash)->type == T_NULL) - (*sym_hash)->type = sym.n_type; - } - (*sym_hash)->auxbfd = abfd; - if (sym.n_numaux != 0) - { - union internal_auxent *alloc; - unsigned int i; - bfd_byte *eaux; - union internal_auxent *iaux; - - (*sym_hash)->numaux = sym.n_numaux; - alloc = ((union internal_auxent *) - bfd_hash_allocate (&info->hash->table, - (sym.n_numaux - * sizeof (*alloc)))); - if (alloc == NULL) - goto error_return; - for (i = 0, eaux = esym + symesz, iaux = alloc; - i < sym.n_numaux; - i++, eaux += symesz, iaux++) - bfd_coff_swap_aux_in (abfd, (PTR) eaux, sym.n_type, - sym.n_sclass, i, sym.n_numaux, - (PTR) iaux); - (*sym_hash)->aux = alloc; - } - } - } - - if (classification == COFF_SYMBOL_PE_SECTION - && (*sym_hash)->numaux != 0) - { - /* Some PE sections (such as .bss) have a zero size in - the section header, but a non-zero size in the AUX - record. Correct that here. - - FIXME: This is not at all the right place to do this. - For example, it won't help objdump. This needs to be - done when we swap in the section header. */ - - BFD_ASSERT ((*sym_hash)->numaux == 1); - if (section->_raw_size == 0) - section->_raw_size = (*sym_hash)->aux[0].x_scn.x_scnlen; - - /* FIXME: We could test whether the section sizes - matches the size in the aux entry, but apparently - that sometimes fails unexpectedly. */ - } - } - - esym += (sym.n_numaux + 1) * symesz; - sym_hash += sym.n_numaux + 1; - } - - /* If this is a non-traditional, non-relocateable link, try to - optimize the handling of any .stab/.stabstr sections. */ - if (! info->relocateable - && ! info->traditional_format - && info->hash->creator->flavour == bfd_get_flavour (abfd) - && (info->strip != strip_all && info->strip != strip_debugger)) - { - asection *stab, *stabstr; - - stab = bfd_get_section_by_name (abfd, ".stab"); - if (stab != NULL) - { - stabstr = bfd_get_section_by_name (abfd, ".stabstr"); - - if (stabstr != NULL) - { - struct coff_link_hash_table *table; - struct coff_section_tdata *secdata; - - secdata = coff_section_data (abfd, stab); - if (secdata == NULL) - { - stab->used_by_bfd = - (PTR) bfd_zalloc (abfd, - sizeof (struct coff_section_tdata)); - if (stab->used_by_bfd == NULL) - goto error_return; - secdata = coff_section_data (abfd, stab); - } - - table = coff_hash_table (info); - - if (! _bfd_link_section_stabs (abfd, &table->stab_info, - stab, stabstr, - &secdata->stab_info)) - goto error_return; - } - } - } - - obj_coff_keep_syms (abfd) = keep_syms; - - return true; - - error_return: - obj_coff_keep_syms (abfd) = keep_syms; - return false; -} - -/* Do the final link step. */ - -boolean -_bfd_coff_final_link (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - bfd_size_type symesz; - struct coff_final_link_info finfo; - boolean debug_merge_allocated; - boolean long_section_names; - asection *o; - struct bfd_link_order *p; - size_t max_sym_count; - size_t max_lineno_count; - size_t max_reloc_count; - size_t max_output_reloc_count; - size_t max_contents_size; - file_ptr rel_filepos; - unsigned int relsz; - file_ptr line_filepos; - unsigned int linesz; - bfd *sub; - bfd_byte *external_relocs = NULL; - char strbuf[STRING_SIZE_SIZE]; - - symesz = bfd_coff_symesz (abfd); - - finfo.info = info; - finfo.output_bfd = abfd; - finfo.strtab = NULL; - finfo.section_info = NULL; - finfo.last_file_index = -1; - finfo.last_bf_index = -1; - finfo.internal_syms = NULL; - finfo.sec_ptrs = NULL; - finfo.sym_indices = NULL; - finfo.outsyms = NULL; - finfo.linenos = NULL; - finfo.contents = NULL; - finfo.external_relocs = NULL; - finfo.internal_relocs = NULL; - finfo.global_to_static = false; - debug_merge_allocated = false; - - coff_data (abfd)->link_info = info; - - finfo.strtab = _bfd_stringtab_init (); - if (finfo.strtab == NULL) - goto error_return; - - if (! coff_debug_merge_hash_table_init (&finfo.debug_merge)) - goto error_return; - debug_merge_allocated = true; - - /* Compute the file positions for all the sections. */ - if (! abfd->output_has_begun) - { - if (! bfd_coff_compute_section_file_positions (abfd)) - goto error_return; - } - - /* Count the line numbers and relocation entries required for the - output file. Set the file positions for the relocs. */ - rel_filepos = obj_relocbase (abfd); - relsz = bfd_coff_relsz (abfd); - max_contents_size = 0; - max_lineno_count = 0; - max_reloc_count = 0; - - long_section_names = false; - for (o = abfd->sections; o != NULL; o = o->next) - { - o->reloc_count = 0; - o->lineno_count = 0; - for (p = o->link_order_head; p != NULL; p = p->next) - { - if (p->type == bfd_indirect_link_order) - { - asection *sec; - - sec = p->u.indirect.section; - - /* Mark all sections which are to be included in the - link. This will normally be every section. We need - to do this so that we can identify any sections which - the linker has decided to not include. */ - sec->linker_mark = true; - - if (info->strip == strip_none - || info->strip == strip_some) - o->lineno_count += sec->lineno_count; - - if (info->relocateable) - o->reloc_count += sec->reloc_count; - - if (sec->_raw_size > max_contents_size) - max_contents_size = sec->_raw_size; - if (sec->lineno_count > max_lineno_count) - max_lineno_count = sec->lineno_count; - if (sec->reloc_count > max_reloc_count) - max_reloc_count = sec->reloc_count; - } - else if (info->relocateable - && (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order)) - ++o->reloc_count; - } - if (o->reloc_count == 0) - o->rel_filepos = 0; - else - { - o->flags |= SEC_RELOC; - o->rel_filepos = rel_filepos; - rel_filepos += o->reloc_count * relsz; - } - - if (bfd_coff_long_section_names (abfd) - && strlen (o->name) > SCNNMLEN) - { - /* This section has a long name which must go in the string - table. This must correspond to the code in - coff_write_object_contents which puts the string index - into the s_name field of the section header. That is why - we pass hash as false. */ - if (_bfd_stringtab_add (finfo.strtab, o->name, false, false) - == (bfd_size_type) -1) - goto error_return; - long_section_names = true; - } - } - - /* If doing a relocateable link, allocate space for the pointers we - need to keep. */ - if (info->relocateable) - { - unsigned int i; - - /* We use section_count + 1, rather than section_count, because - the target_index fields are 1 based. */ - finfo.section_info = - ((struct coff_link_section_info *) - bfd_malloc ((abfd->section_count + 1) - * sizeof (struct coff_link_section_info))); - if (finfo.section_info == NULL) - goto error_return; - for (i = 0; i <= abfd->section_count; i++) - { - finfo.section_info[i].relocs = NULL; - finfo.section_info[i].rel_hashes = NULL; - } - } - - /* We now know the size of the relocs, so we can determine the file - positions of the line numbers. */ - line_filepos = rel_filepos; - linesz = bfd_coff_linesz (abfd); - max_output_reloc_count = 0; - for (o = abfd->sections; o != NULL; o = o->next) - { - if (o->lineno_count == 0) - o->line_filepos = 0; - else - { - o->line_filepos = line_filepos; - line_filepos += o->lineno_count * linesz; - } - - if (o->reloc_count != 0) - { - /* We don't know the indices of global symbols until we have - written out all the local symbols. For each section in - the output file, we keep an array of pointers to hash - table entries. Each entry in the array corresponds to a - reloc. When we find a reloc against a global symbol, we - set the corresponding entry in this array so that we can - fix up the symbol index after we have written out all the - local symbols. - - Because of this problem, we also keep the relocs in - memory until the end of the link. This wastes memory, - but only when doing a relocateable link, which is not the - common case. */ - BFD_ASSERT (info->relocateable); - finfo.section_info[o->target_index].relocs = - ((struct internal_reloc *) - bfd_malloc (o->reloc_count * sizeof (struct internal_reloc))); - finfo.section_info[o->target_index].rel_hashes = - ((struct coff_link_hash_entry **) - bfd_malloc (o->reloc_count - * sizeof (struct coff_link_hash_entry *))); - if (finfo.section_info[o->target_index].relocs == NULL - || finfo.section_info[o->target_index].rel_hashes == NULL) - goto error_return; - - if (o->reloc_count > max_output_reloc_count) - max_output_reloc_count = o->reloc_count; - } - - /* Reset the reloc and lineno counts, so that we can use them to - count the number of entries we have output so far. */ - o->reloc_count = 0; - o->lineno_count = 0; - } - - obj_sym_filepos (abfd) = line_filepos; - - /* Figure out the largest number of symbols in an input BFD. Take - the opportunity to clear the output_has_begun fields of all the - input BFD's. */ - max_sym_count = 0; - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - { - size_t sz; - - sub->output_has_begun = false; - sz = obj_raw_syment_count (sub); - if (sz > max_sym_count) - max_sym_count = sz; - } - - /* Allocate some buffers used while linking. */ - finfo.internal_syms = ((struct internal_syment *) - bfd_malloc (max_sym_count - * sizeof (struct internal_syment))); - finfo.sec_ptrs = (asection **) bfd_malloc (max_sym_count - * sizeof (asection *)); - finfo.sym_indices = (long *) bfd_malloc (max_sym_count * sizeof (long)); - finfo.outsyms = ((bfd_byte *) - bfd_malloc ((size_t) ((max_sym_count + 1) * symesz))); - finfo.linenos = (bfd_byte *) bfd_malloc (max_lineno_count - * bfd_coff_linesz (abfd)); - finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); - finfo.external_relocs = (bfd_byte *) bfd_malloc (max_reloc_count * relsz); - if (! info->relocateable) - finfo.internal_relocs = ((struct internal_reloc *) - bfd_malloc (max_reloc_count - * sizeof (struct internal_reloc))); - if ((finfo.internal_syms == NULL && max_sym_count > 0) - || (finfo.sec_ptrs == NULL && max_sym_count > 0) - || (finfo.sym_indices == NULL && max_sym_count > 0) - || finfo.outsyms == NULL - || (finfo.linenos == NULL && max_lineno_count > 0) - || (finfo.contents == NULL && max_contents_size > 0) - || (finfo.external_relocs == NULL && max_reloc_count > 0) - || (! info->relocateable - && finfo.internal_relocs == NULL - && max_reloc_count > 0)) - goto error_return; - - /* We now know the position of everything in the file, except that - we don't know the size of the symbol table and therefore we don't - know where the string table starts. We just build the string - table in memory as we go along. We process all the relocations - for a single input file at once. */ - obj_raw_syment_count (abfd) = 0; - - if (coff_backend_info (abfd)->_bfd_coff_start_final_link) - { - if (! bfd_coff_start_final_link (abfd, info)) - goto error_return; - } - - for (o = abfd->sections; o != NULL; o = o->next) - { - for (p = o->link_order_head; p != NULL; p = p->next) - { - if (p->type == bfd_indirect_link_order - && bfd_family_coff (p->u.indirect.section->owner)) - { - sub = p->u.indirect.section->owner; - if (! bfd_coff_link_output_has_begun (sub, & finfo)) - { - if (! _bfd_coff_link_input_bfd (&finfo, sub)) - goto error_return; - sub->output_has_begun = true; - } - } - else if (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order) - { - if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p)) - goto error_return; - } - else - { - if (! _bfd_default_link_order (abfd, info, o, p)) - goto error_return; - } - } - } - - if (! bfd_coff_final_link_postscript (abfd, & finfo)) - goto error_return; - - /* Free up the buffers used by _bfd_coff_link_input_bfd. */ - - coff_debug_merge_hash_table_free (&finfo.debug_merge); - debug_merge_allocated = false; - - if (finfo.internal_syms != NULL) - { - free (finfo.internal_syms); - finfo.internal_syms = NULL; - } - if (finfo.sec_ptrs != NULL) - { - free (finfo.sec_ptrs); - finfo.sec_ptrs = NULL; - } - if (finfo.sym_indices != NULL) - { - free (finfo.sym_indices); - finfo.sym_indices = NULL; - } - if (finfo.linenos != NULL) - { - free (finfo.linenos); - finfo.linenos = NULL; - } - if (finfo.contents != NULL) - { - free (finfo.contents); - finfo.contents = NULL; - } - if (finfo.external_relocs != NULL) - { - free (finfo.external_relocs); - finfo.external_relocs = NULL; - } - if (finfo.internal_relocs != NULL) - { - free (finfo.internal_relocs); - finfo.internal_relocs = NULL; - } - - /* The value of the last C_FILE symbol is supposed to be the symbol - index of the first external symbol. Write it out again if - necessary. */ - if (finfo.last_file_index != -1 - && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd)) - { - finfo.last_file.n_value = obj_raw_syment_count (abfd); - bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file, - (PTR) finfo.outsyms); - if (bfd_seek (abfd, - (obj_sym_filepos (abfd) - + finfo.last_file_index * symesz), - SEEK_SET) != 0 - || bfd_write (finfo.outsyms, symesz, 1, abfd) != symesz) - return false; - } - - /* If doing task linking (ld --task-link) then make a pass through the - global symbols, writing out any that are defined, and making them - static. */ - if (info->task_link) - { - finfo.failed = false; - coff_link_hash_traverse (coff_hash_table (info), _bfd_coff_write_task_globals, - (PTR) &finfo); - if (finfo.failed) - goto error_return; - } - - /* Write out the global symbols. */ - finfo.failed = false; - coff_link_hash_traverse (coff_hash_table (info), _bfd_coff_write_global_sym, - (PTR) &finfo); - if (finfo.failed) - goto error_return; - - /* The outsyms buffer is used by _bfd_coff_write_global_sym. */ - if (finfo.outsyms != NULL) - { - free (finfo.outsyms); - finfo.outsyms = NULL; - } - - if (info->relocateable && max_output_reloc_count > 0) - { - /* Now that we have written out all the global symbols, we know - the symbol indices to use for relocs against them, and we can - finally write out the relocs. */ - external_relocs = ((bfd_byte *) - bfd_malloc (max_output_reloc_count * relsz)); - if (external_relocs == NULL) - goto error_return; - - for (o = abfd->sections; o != NULL; o = o->next) - { - struct internal_reloc *irel; - struct internal_reloc *irelend; - struct coff_link_hash_entry **rel_hash; - bfd_byte *erel; - - if (o->reloc_count == 0) - continue; - - irel = finfo.section_info[o->target_index].relocs; - irelend = irel + o->reloc_count; - rel_hash = finfo.section_info[o->target_index].rel_hashes; - erel = external_relocs; - for (; irel < irelend; irel++, rel_hash++, erel += relsz) - { - if (*rel_hash != NULL) - { - BFD_ASSERT ((*rel_hash)->indx >= 0); - irel->r_symndx = (*rel_hash)->indx; - } - bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel); - } - - if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 - || bfd_write ((PTR) external_relocs, relsz, o->reloc_count, - abfd) != relsz * o->reloc_count) - goto error_return; - } - - free (external_relocs); - external_relocs = NULL; - } - - /* Free up the section information. */ - if (finfo.section_info != NULL) - { - unsigned int i; - - for (i = 0; i < abfd->section_count; i++) - { - if (finfo.section_info[i].relocs != NULL) - free (finfo.section_info[i].relocs); - if (finfo.section_info[i].rel_hashes != NULL) - free (finfo.section_info[i].rel_hashes); - } - free (finfo.section_info); - finfo.section_info = NULL; - } - - /* If we have optimized stabs strings, output them. */ - if (coff_hash_table (info)->stab_info != NULL) - { - if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info)) - return false; - } - - /* Write out the string table. */ - if (obj_raw_syment_count (abfd) != 0 || long_section_names) - { - if (bfd_seek (abfd, - (obj_sym_filepos (abfd) - + obj_raw_syment_count (abfd) * symesz), - SEEK_SET) != 0) - return false; - -#if STRING_SIZE_SIZE == 4 - bfd_h_put_32 (abfd, - _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, - (bfd_byte *) strbuf); -#else - #error Change bfd_h_put_32 -#endif - - if (bfd_write (strbuf, 1, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE) - return false; - - if (! _bfd_stringtab_emit (abfd, finfo.strtab)) - return false; - - obj_coff_strings_written (abfd) = true; - } - - _bfd_stringtab_free (finfo.strtab); - - /* Setting bfd_get_symcount to 0 will cause write_object_contents to - not try to write out the symbols. */ - bfd_get_symcount (abfd) = 0; - - return true; - - error_return: - if (debug_merge_allocated) - coff_debug_merge_hash_table_free (&finfo.debug_merge); - if (finfo.strtab != NULL) - _bfd_stringtab_free (finfo.strtab); - if (finfo.section_info != NULL) - { - unsigned int i; - - for (i = 0; i < abfd->section_count; i++) - { - if (finfo.section_info[i].relocs != NULL) - free (finfo.section_info[i].relocs); - if (finfo.section_info[i].rel_hashes != NULL) - free (finfo.section_info[i].rel_hashes); - } - free (finfo.section_info); - } - if (finfo.internal_syms != NULL) - free (finfo.internal_syms); - if (finfo.sec_ptrs != NULL) - free (finfo.sec_ptrs); - if (finfo.sym_indices != NULL) - free (finfo.sym_indices); - if (finfo.outsyms != NULL) - free (finfo.outsyms); - if (finfo.linenos != NULL) - free (finfo.linenos); - if (finfo.contents != NULL) - free (finfo.contents); - if (finfo.external_relocs != NULL) - free (finfo.external_relocs); - if (finfo.internal_relocs != NULL) - free (finfo.internal_relocs); - if (external_relocs != NULL) - free (external_relocs); - return false; -} - -/* parse out a -heap <reserved>,<commit> line */ - -static char * -dores_com (ptr, output_bfd, heap) - char *ptr; - bfd *output_bfd; - int heap; -{ - if (coff_data(output_bfd)->pe) - { - int val = strtoul (ptr, &ptr, 0); - if (heap) - pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve =val; - else - pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve =val; - - if (ptr[0] == ',') - { - int val = strtoul (ptr+1, &ptr, 0); - if (heap) - pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit =val; - else - pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit =val; - } - } - return ptr; -} - -static char *get_name(ptr, dst) -char *ptr; -char **dst; -{ - while (*ptr == ' ') - ptr++; - *dst = ptr; - while (*ptr && *ptr != ' ') - ptr++; - *ptr = 0; - return ptr+1; -} - -/* Process any magic embedded commands in a section called .drectve */ - -static int -process_embedded_commands (output_bfd, info, abfd) - bfd *output_bfd; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - bfd *abfd; -{ - asection *sec = bfd_get_section_by_name (abfd, ".drectve"); - char *s; - char *e; - char *copy; - if (!sec) - return 1; - - copy = bfd_malloc ((size_t) sec->_raw_size); - if (!copy) - return 0; - if (! bfd_get_section_contents(abfd, sec, copy, 0, sec->_raw_size)) - { - free (copy); - return 0; - } - e = copy + sec->_raw_size; - for (s = copy; s < e ; ) - { - if (s[0]!= '-') { - s++; - continue; - } - if (strncmp (s,"-attr", 5) == 0) - { - char *name; - char *attribs; - asection *asec; - - int loop = 1; - int had_write = 0; - int had_read = 0; - int had_exec= 0; - int had_shared= 0; - s += 5; - s = get_name(s, &name); - s = get_name(s, &attribs); - while (loop) { - switch (*attribs++) - { - case 'W': - had_write = 1; - break; - case 'R': - had_read = 1; - break; - case 'S': - had_shared = 1; - break; - case 'X': - had_exec = 1; - break; - default: - loop = 0; - } - } - asec = bfd_get_section_by_name (abfd, name); - if (asec) { - if (had_exec) - asec->flags |= SEC_CODE; - if (!had_write) - asec->flags |= SEC_READONLY; - } - } - else if (strncmp (s,"-heap", 5) == 0) - { - s = dores_com (s+5, output_bfd, 1); - } - else if (strncmp (s,"-stack", 6) == 0) - { - s = dores_com (s+6, output_bfd, 0); - } - else - s++; - } - free (copy); - return 1; -} - -/* Place a marker against all symbols which are used by relocations. - This marker can be picked up by the 'do we skip this symbol ?' - loop in _bfd_coff_link_input_bfd() and used to prevent skipping - that symbol. - */ - -static void -mark_relocs (finfo, input_bfd) - struct coff_final_link_info * finfo; - bfd * input_bfd; -{ - asection * a; - - if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0) - return; - - for (a = input_bfd->sections; a != (asection *) NULL; a = a->next) - { - struct internal_reloc * internal_relocs; - struct internal_reloc * irel; - struct internal_reloc * irelend; - - if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1) - continue; - - /* Read in the relocs. */ - internal_relocs = _bfd_coff_read_internal_relocs - (input_bfd, a, false, - finfo->external_relocs, - finfo->info->relocateable, - (finfo->info->relocateable - ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count) - : finfo->internal_relocs) - ); - - if (internal_relocs == NULL) - continue; - - irel = internal_relocs; - irelend = irel + a->reloc_count; - - /* Place a mark in the sym_indices array (whose entries have - been initialised to 0) for all of the symbols that are used - in the relocation table. This will then be picked up in the - skip/don't pass */ - - for (; irel < irelend; irel++) - { - finfo->sym_indices[ irel->r_symndx ] = -1; - } - } -} - -/* Link an input file into the linker output file. This function - handles all the sections and relocations of the input file at once. */ - -boolean -_bfd_coff_link_input_bfd (finfo, input_bfd) - struct coff_final_link_info *finfo; - bfd *input_bfd; -{ - unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask; - unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft; -#if 0 - unsigned int n_btmask = coff_data (input_bfd)->local_n_btmask; -#endif - boolean (*adjust_symndx) PARAMS ((bfd *, struct bfd_link_info *, bfd *, - asection *, struct internal_reloc *, - boolean *)); - bfd *output_bfd; - const char *strings; - bfd_size_type syment_base; - boolean copy, hash; - bfd_size_type isymesz; - bfd_size_type osymesz; - bfd_size_type linesz; - bfd_byte *esym; - bfd_byte *esym_end; - struct internal_syment *isymp; - asection **secpp; - long *indexp; - unsigned long output_index; - bfd_byte *outsym; - struct coff_link_hash_entry **sym_hash; - asection *o; - - /* Move all the symbols to the output file. */ - - output_bfd = finfo->output_bfd; - strings = NULL; - syment_base = obj_raw_syment_count (output_bfd); - isymesz = bfd_coff_symesz (input_bfd); - osymesz = bfd_coff_symesz (output_bfd); - linesz = bfd_coff_linesz (input_bfd); - BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); - - copy = false; - if (! finfo->info->keep_memory) - copy = true; - hash = true; - if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) - hash = false; - - if (! _bfd_coff_get_external_symbols (input_bfd)) - return false; - - esym = (bfd_byte *) obj_coff_external_syms (input_bfd); - esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; - isymp = finfo->internal_syms; - secpp = finfo->sec_ptrs; - indexp = finfo->sym_indices; - output_index = syment_base; - outsym = finfo->outsyms; - - if (coff_data (output_bfd)->pe) - { - if (! process_embedded_commands (output_bfd, finfo->info, input_bfd)) - return false; - } - - /* If we are going to perform relocations and also strip/discard some symbols - then we must make sure that we do not strip/discard those symbols that are - going to be involved in the relocations */ - if (( finfo->info->strip != strip_none - || finfo->info->discard != discard_none) - && finfo->info->relocateable) - { - /* mark the symbol array as 'not-used' */ - memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp); - - mark_relocs (finfo, input_bfd); - } - - while (esym < esym_end) - { - struct internal_syment isym; - enum coff_symbol_classification classification; - boolean skip; - boolean global; - boolean dont_skip_symbol; - int add; - - bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp); - - /* Make a copy of *isymp so that the relocate_section function - always sees the original values. This is more reliable than - always recomputing the symbol value even if we are stripping - the symbol. */ - isym = *isymp; - - classification = bfd_coff_classify_symbol (input_bfd, &isym); - switch (classification) - { - default: - abort (); - case COFF_SYMBOL_GLOBAL: - case COFF_SYMBOL_PE_SECTION: - case COFF_SYMBOL_LOCAL: - *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum); - break; - case COFF_SYMBOL_COMMON: - *secpp = bfd_com_section_ptr; - break; - case COFF_SYMBOL_UNDEFINED: - *secpp = bfd_und_section_ptr; - break; - } - - /* Extract the flag indicating if this symbol is used by a - relocation. */ - if ((finfo->info->strip != strip_none - || finfo->info->discard != discard_none) - && finfo->info->relocateable) - dont_skip_symbol = *indexp; - else - dont_skip_symbol = false; - - *indexp = -1; - - skip = false; - global = false; - add = 1 + isym.n_numaux; - - /* If we are stripping all symbols, we want to skip this one. */ - if (finfo->info->strip == strip_all && ! dont_skip_symbol) - skip = true; - - if (! skip) - { - switch (classification) - { - default: - abort (); - case COFF_SYMBOL_GLOBAL: - case COFF_SYMBOL_COMMON: - case COFF_SYMBOL_PE_SECTION: - /* This is a global symbol. Global symbols come at the - end of the symbol table, so skip them for now. - Locally defined function symbols, however, are an - exception, and are not moved to the end. */ - global = true; - if (! ISFCN (isym.n_type)) - skip = true; - break; - - case COFF_SYMBOL_UNDEFINED: - /* Undefined symbols are left for the end. */ - global = true; - skip = true; - break; - - case COFF_SYMBOL_LOCAL: - /* This is a local symbol. Skip it if we are discarding - local symbols. */ - if (finfo->info->discard == discard_all && ! dont_skip_symbol) - skip = true; - break; - } - } - -#ifndef COFF_WITH_PE - /* Skip section symbols for sections which are not going to be - emitted, or which belong to linkonce sections that are going - to be discarded. */ - if (!skip - && isym.n_sclass == C_STAT - && isym.n_type == T_NULL - && isym.n_numaux > 0) - { - if ((*secpp)->output_section == bfd_abs_section_ptr - || (*secpp)->kept_section) - skip = true; - } -#endif - - /* If we stripping debugging symbols, and this is a debugging - symbol, then skip it. FIXME: gas sets the section to N_ABS - for some types of debugging symbols; I don't know if this is - a bug or not. In any case, we handle it here. */ - if (! skip - && finfo->info->strip == strip_debugger - && ! dont_skip_symbol - && (isym.n_scnum == N_DEBUG - || (isym.n_scnum == N_ABS - && (isym.n_sclass == C_AUTO - || isym.n_sclass == C_REG - || isym.n_sclass == C_MOS - || isym.n_sclass == C_MOE - || isym.n_sclass == C_MOU - || isym.n_sclass == C_ARG - || isym.n_sclass == C_REGPARM - || isym.n_sclass == C_FIELD - || isym.n_sclass == C_EOS)))) - skip = true; - - /* If some symbols are stripped based on the name, work out the - name and decide whether to skip this symbol. */ - if (! skip - && (finfo->info->strip == strip_some - || finfo->info->discard == discard_l)) - { - const char *name; - char buf[SYMNMLEN + 1]; - - name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); - if (name == NULL) - return false; - - if (! dont_skip_symbol - && ((finfo->info->strip == strip_some - && (bfd_hash_lookup (finfo->info->keep_hash, name, false, - false) == NULL)) - || (! global - && finfo->info->discard == discard_l - && bfd_is_local_label_name (input_bfd, name)))) - skip = true; - } - - /* If this is an enum, struct, or union tag, see if we have - already output an identical type. */ - if (! skip - && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0 - && (isym.n_sclass == C_ENTAG - || isym.n_sclass == C_STRTAG - || isym.n_sclass == C_UNTAG) - && isym.n_numaux == 1) - { - const char *name; - char buf[SYMNMLEN + 1]; - struct coff_debug_merge_hash_entry *mh; - struct coff_debug_merge_type *mt; - union internal_auxent aux; - struct coff_debug_merge_element **epp; - bfd_byte *esl, *eslend; - struct internal_syment *islp; - - name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); - if (name == NULL) - return false; - - /* Ignore fake names invented by compiler; treat them all as - the same name. */ - if (*name == '~' || *name == '.' || *name == '$' - || (*name == bfd_get_symbol_leading_char (input_bfd) - && (name[1] == '~' || name[1] == '.' || name[1] == '$'))) - name = ""; - - mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name, - true, true); - if (mh == NULL) - return false; - - /* Allocate memory to hold type information. If this turns - out to be a duplicate, we pass this address to - bfd_release. */ - mt = ((struct coff_debug_merge_type *) - bfd_alloc (input_bfd, - sizeof (struct coff_debug_merge_type))); - if (mt == NULL) - return false; - mt->class = isym.n_sclass; - - /* Pick up the aux entry, which points to the end of the tag - entries. */ - bfd_coff_swap_aux_in (input_bfd, (PTR) (esym + isymesz), - isym.n_type, isym.n_sclass, 0, isym.n_numaux, - (PTR) &aux); - - /* Gather the elements. */ - epp = &mt->elements; - mt->elements = NULL; - islp = isymp + 2; - esl = esym + 2 * isymesz; - eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd) - + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz); - while (esl < eslend) - { - const char *elename; - char elebuf[SYMNMLEN + 1]; - char *name_copy; - - bfd_coff_swap_sym_in (input_bfd, (PTR) esl, (PTR) islp); - - *epp = ((struct coff_debug_merge_element *) - bfd_alloc (input_bfd, - sizeof (struct coff_debug_merge_element))); - if (*epp == NULL) - return false; - - elename = _bfd_coff_internal_syment_name (input_bfd, islp, - elebuf); - if (elename == NULL) - return false; - - name_copy = (char *) bfd_alloc (input_bfd, - strlen (elename) + 1); - if (name_copy == NULL) - return false; - strcpy (name_copy, elename); - - (*epp)->name = name_copy; - (*epp)->type = islp->n_type; - (*epp)->tagndx = 0; - if (islp->n_numaux >= 1 - && islp->n_type != T_NULL - && islp->n_sclass != C_EOS) - { - union internal_auxent eleaux; - long indx; - - bfd_coff_swap_aux_in (input_bfd, (PTR) (esl + isymesz), - islp->n_type, islp->n_sclass, 0, - islp->n_numaux, (PTR) &eleaux); - indx = eleaux.x_sym.x_tagndx.l; - - /* FIXME: If this tagndx entry refers to a symbol - defined later in this file, we just ignore it. - Handling this correctly would be tedious, and may - not be required. */ - - if (indx > 0 - && (indx - < ((esym - - (bfd_byte *) obj_coff_external_syms (input_bfd)) - / (long) isymesz))) - { - (*epp)->tagndx = finfo->sym_indices[indx]; - if ((*epp)->tagndx < 0) - (*epp)->tagndx = 0; - } - } - epp = &(*epp)->next; - *epp = NULL; - - esl += (islp->n_numaux + 1) * isymesz; - islp += islp->n_numaux + 1; - } - - /* See if we already have a definition which matches this - type. We always output the type if it has no elements, - for simplicity. */ - if (mt->elements == NULL) - bfd_release (input_bfd, (PTR) mt); - else - { - struct coff_debug_merge_type *mtl; - - for (mtl = mh->types; mtl != NULL; mtl = mtl->next) - { - struct coff_debug_merge_element *me, *mel; - - if (mtl->class != mt->class) - continue; - - for (me = mt->elements, mel = mtl->elements; - me != NULL && mel != NULL; - me = me->next, mel = mel->next) - { - if (strcmp (me->name, mel->name) != 0 - || me->type != mel->type - || me->tagndx != mel->tagndx) - break; - } - - if (me == NULL && mel == NULL) - break; - } - - if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base) - { - /* This is the first definition of this type. */ - mt->indx = output_index; - mt->next = mh->types; - mh->types = mt; - } - else - { - /* This is a redefinition which can be merged. */ - bfd_release (input_bfd, (PTR) mt); - *indexp = mtl->indx; - add = (eslend - esym) / isymesz; - skip = true; - } - } - } - - /* We now know whether we are to skip this symbol or not. */ - if (! skip) - { - /* Adjust the symbol in order to output it. */ - - if (isym._n._n_n._n_zeroes == 0 - && isym._n._n_n._n_offset != 0) - { - const char *name; - bfd_size_type indx; - - /* This symbol has a long name. Enter it in the string - table we are building. Note that we do not check - bfd_coff_symname_in_debug. That is only true for - XCOFF, and XCOFF requires different linking code - anyhow. */ - name = _bfd_coff_internal_syment_name (input_bfd, &isym, - (char *) NULL); - if (name == NULL) - return false; - indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); - if (indx == (bfd_size_type) -1) - return false; - isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; - } - - switch (isym.n_sclass) - { - case C_AUTO: - case C_MOS: - case C_EOS: - case C_MOE: - case C_MOU: - case C_UNTAG: - case C_STRTAG: - case C_ENTAG: - case C_TPDEF: - case C_ARG: - case C_USTATIC: - case C_REG: - case C_REGPARM: - case C_FIELD: - /* The symbol value should not be modified. */ - break; - - case C_FCN: - if (obj_pe (input_bfd) - && strcmp (isym.n_name, ".bf") != 0 - && isym.n_scnum > 0) - { - /* For PE, .lf and .ef get their value left alone, - while .bf gets relocated. However, they all have - "real" section numbers, and need to be moved into - the new section. */ - isym.n_scnum = (*secpp)->output_section->target_index; - break; - } - /* Fall through. */ - default: - case C_LABEL: /* Not completely sure about these 2 */ - case C_EXTDEF: - case C_BLOCK: - case C_EFCN: - case C_NULL: - case C_EXT: - case C_STAT: - case C_SECTION: - case C_NT_WEAK: - /* Compute new symbol location. */ - if (isym.n_scnum > 0) - { - isym.n_scnum = (*secpp)->output_section->target_index; - isym.n_value += (*secpp)->output_offset; - if (! obj_pe (input_bfd)) - isym.n_value -= (*secpp)->vma; - if (! obj_pe (finfo->output_bfd)) - isym.n_value += (*secpp)->output_section->vma; - } - break; - - case C_FILE: - /* The value of a C_FILE symbol is the symbol index of - the next C_FILE symbol. The value of the last C_FILE - symbol is the symbol index to the first external - symbol (actually, coff_renumber_symbols does not get - this right--it just sets the value of the last C_FILE - symbol to zero--and nobody has ever complained about - it). We try to get this right, below, just before we - write the symbols out, but in the general case we may - have to write the symbol out twice. */ - - if (finfo->last_file_index != -1 - && finfo->last_file.n_value != (long) output_index) - { - /* We must correct the value of the last C_FILE - entry. */ - finfo->last_file.n_value = output_index; - if ((bfd_size_type) finfo->last_file_index >= syment_base) - { - /* The last C_FILE symbol is in this input file. */ - bfd_coff_swap_sym_out (output_bfd, - (PTR) &finfo->last_file, - (PTR) (finfo->outsyms - + ((finfo->last_file_index - - syment_base) - * osymesz))); - } - else - { - /* We have already written out the last C_FILE - symbol. We need to write it out again. We - borrow *outsym temporarily. */ - bfd_coff_swap_sym_out (output_bfd, - (PTR) &finfo->last_file, - (PTR) outsym); - if (bfd_seek (output_bfd, - (obj_sym_filepos (output_bfd) - + finfo->last_file_index * osymesz), - SEEK_SET) != 0 - || (bfd_write (outsym, osymesz, 1, output_bfd) - != osymesz)) - return false; - } - } - - finfo->last_file_index = output_index; - finfo->last_file = isym; - break; - } - - /* If doing task linking, convert normal global function symbols to - static functions. */ - if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym)) - isym.n_sclass = C_STAT; - - /* Output the symbol. */ - - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); - - *indexp = output_index; - - if (global) - { - long indx; - struct coff_link_hash_entry *h; - - indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) - / isymesz); - h = obj_coff_sym_hashes (input_bfd)[indx]; - if (h == NULL) - { - /* This can happen if there were errors earlier in - the link. */ - bfd_set_error (bfd_error_bad_value); - return false; - } - h->indx = output_index; - } - - output_index += add; - outsym += add * osymesz; - } - - esym += add * isymesz; - isymp += add; - ++secpp; - ++indexp; - for (--add; add > 0; --add) - { - *secpp++ = NULL; - *indexp++ = -1; - } - } - - /* Fix up the aux entries. This must be done in a separate pass, - because we don't know the correct symbol indices until we have - already decided which symbols we are going to keep. */ - - esym = (bfd_byte *) obj_coff_external_syms (input_bfd); - esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; - isymp = finfo->internal_syms; - indexp = finfo->sym_indices; - sym_hash = obj_coff_sym_hashes (input_bfd); - outsym = finfo->outsyms; - while (esym < esym_end) - { - int add; - - add = 1 + isymp->n_numaux; - - if ((*indexp < 0 - || (bfd_size_type) *indexp < syment_base) - && (*sym_hash == NULL - || (*sym_hash)->auxbfd != input_bfd)) - esym += add * isymesz; - else - { - struct coff_link_hash_entry *h; - int i; - - h = NULL; - if (*indexp < 0) - { - h = *sym_hash; - - /* The m68k-motorola-sysv assembler will sometimes - generate two symbols with the same name, but only one - will have aux entries. */ - BFD_ASSERT (isymp->n_numaux == 0 - || h->numaux == isymp->n_numaux); - } - - esym += isymesz; - - if (h == NULL) - outsym += osymesz; - - /* Handle the aux entries. This handling is based on - coff_pointerize_aux. I don't know if it always correct. */ - for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) - { - union internal_auxent aux; - union internal_auxent *auxp; - - if (h != NULL) - auxp = h->aux + i; - else - { - bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type, - isymp->n_sclass, i, isymp->n_numaux, - (PTR) &aux); - auxp = &aux; - } - - if (isymp->n_sclass == C_FILE) - { - /* If this is a long filename, we must put it in the - string table. */ - if (auxp->x_file.x_n.x_zeroes == 0 - && auxp->x_file.x_n.x_offset != 0) - { - const char *filename; - bfd_size_type indx; - - BFD_ASSERT (auxp->x_file.x_n.x_offset - >= STRING_SIZE_SIZE); - if (strings == NULL) - { - strings = _bfd_coff_read_string_table (input_bfd); - if (strings == NULL) - return false; - } - filename = strings + auxp->x_file.x_n.x_offset; - indx = _bfd_stringtab_add (finfo->strtab, filename, - hash, copy); - if (indx == (bfd_size_type) -1) - return false; - auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; - } - } - else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) - { - unsigned long indx; - - if (ISFCN (isymp->n_type) - || ISTAG (isymp->n_sclass) - || isymp->n_sclass == C_BLOCK - || isymp->n_sclass == C_FCN) - { - indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l; - if (indx > 0 - && indx < obj_raw_syment_count (input_bfd)) - { - /* We look forward through the symbol for - the index of the next symbol we are going - to include. I don't know if this is - entirely right. */ - while ((finfo->sym_indices[indx] < 0 - || ((bfd_size_type) finfo->sym_indices[indx] - < syment_base)) - && indx < obj_raw_syment_count (input_bfd)) - ++indx; - if (indx >= obj_raw_syment_count (input_bfd)) - indx = output_index; - else - indx = finfo->sym_indices[indx]; - auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx; - } - } - - indx = auxp->x_sym.x_tagndx.l; - if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) - { - long symindx; - - symindx = finfo->sym_indices[indx]; - if (symindx < 0) - auxp->x_sym.x_tagndx.l = 0; - else - auxp->x_sym.x_tagndx.l = symindx; - } - - /* The .bf symbols are supposed to be linked through - the endndx field. We need to carry this list - across object files. */ - if (i == 0 - && h == NULL - && isymp->n_sclass == C_FCN - && (isymp->_n._n_n._n_zeroes != 0 - || isymp->_n._n_n._n_offset == 0) - && isymp->_n._n_name[0] == '.' - && isymp->_n._n_name[1] == 'b' - && isymp->_n._n_name[2] == 'f' - && isymp->_n._n_name[3] == '\0') - { - if (finfo->last_bf_index != -1) - { - finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l = - *indexp; - - if ((bfd_size_type) finfo->last_bf_index - >= syment_base) - { - PTR auxout; - - /* The last .bf symbol is in this input - file. This will only happen if the - assembler did not set up the .bf - endndx symbols correctly. */ - auxout = (PTR) (finfo->outsyms - + ((finfo->last_bf_index - - syment_base) - * osymesz)); - bfd_coff_swap_aux_out (output_bfd, - (PTR) &finfo->last_bf, - isymp->n_type, - isymp->n_sclass, - 0, isymp->n_numaux, - auxout); - } - else - { - /* We have already written out the last - .bf aux entry. We need to write it - out again. We borrow *outsym - temporarily. FIXME: This case should - be made faster. */ - bfd_coff_swap_aux_out (output_bfd, - (PTR) &finfo->last_bf, - isymp->n_type, - isymp->n_sclass, - 0, isymp->n_numaux, - (PTR) outsym); - if (bfd_seek (output_bfd, - (obj_sym_filepos (output_bfd) - + finfo->last_bf_index * osymesz), - SEEK_SET) != 0 - || bfd_write (outsym, osymesz, 1, - output_bfd) != osymesz) - return false; - } - } - - if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0) - finfo->last_bf_index = -1; - else - { - /* The endndx field of this aux entry must - be updated with the symbol number of the - next .bf symbol. */ - finfo->last_bf = *auxp; - finfo->last_bf_index = (((outsym - finfo->outsyms) - / osymesz) - + syment_base); - } - } - } - - if (h == NULL) - { - bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isymp->n_type, - isymp->n_sclass, i, isymp->n_numaux, - (PTR) outsym); - outsym += osymesz; - } - - esym += isymesz; - } - } - - indexp += add; - isymp += add; - sym_hash += add; - } - - /* Relocate the line numbers, unless we are stripping them. */ - if (finfo->info->strip == strip_none - || finfo->info->strip == strip_some) - { - for (o = input_bfd->sections; o != NULL; o = o->next) - { - bfd_vma offset; - bfd_byte *eline; - bfd_byte *elineend; - bfd_byte *oeline; - boolean skipping; - - /* FIXME: If SEC_HAS_CONTENTS is not for the section, then - build_link_order in ldwrite.c will not have created a - link order, which means that we will not have seen this - input section in _bfd_coff_final_link, which means that - we will not have allocated space for the line numbers of - this section. I don't think line numbers can be - meaningful for a section which does not have - SEC_HAS_CONTENTS set, but, if they do, this must be - changed. */ - if (o->lineno_count == 0 - || (o->output_section->flags & SEC_HAS_CONTENTS) == 0) - continue; - - if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0 - || bfd_read (finfo->linenos, linesz, o->lineno_count, - input_bfd) != linesz * o->lineno_count) - return false; - - offset = o->output_section->vma + o->output_offset - o->vma; - eline = finfo->linenos; - oeline = finfo->linenos; - elineend = eline + linesz * o->lineno_count; - skipping = false; - for (; eline < elineend; eline += linesz) - { - struct internal_lineno iline; - - bfd_coff_swap_lineno_in (input_bfd, (PTR) eline, (PTR) &iline); - - if (iline.l_lnno != 0) - iline.l_addr.l_paddr += offset; - else if (iline.l_addr.l_symndx >= 0 - && ((unsigned long) iline.l_addr.l_symndx - < obj_raw_syment_count (input_bfd))) - { - long indx; - - indx = finfo->sym_indices[iline.l_addr.l_symndx]; - - if (indx < 0) - { - /* These line numbers are attached to a symbol - which we are stripping. We must discard the - line numbers because reading them back with - no associated symbol (or associating them all - with symbol #0) will fail. We can't regain - the space in the output file, but at least - they're dense. */ - skipping = true; - } - else - { - struct internal_syment is; - union internal_auxent ia; - - /* Fix up the lnnoptr field in the aux entry of - the symbol. It turns out that we can't do - this when we modify the symbol aux entries, - because gas sometimes screws up the lnnoptr - field and makes it an offset from the start - of the line numbers rather than an absolute - file index. */ - bfd_coff_swap_sym_in (output_bfd, - (PTR) (finfo->outsyms - + ((indx - syment_base) - * osymesz)), - (PTR) &is); - if ((ISFCN (is.n_type) - || is.n_sclass == C_BLOCK) - && is.n_numaux >= 1) - { - PTR auxptr; - - auxptr = (PTR) (finfo->outsyms - + ((indx - syment_base + 1) - * osymesz)); - bfd_coff_swap_aux_in (output_bfd, auxptr, - is.n_type, is.n_sclass, - 0, is.n_numaux, (PTR) &ia); - ia.x_sym.x_fcnary.x_fcn.x_lnnoptr = - (o->output_section->line_filepos - + o->output_section->lineno_count * linesz - + eline - finfo->linenos); - bfd_coff_swap_aux_out (output_bfd, (PTR) &ia, - is.n_type, is.n_sclass, 0, - is.n_numaux, auxptr); - } - - skipping = false; - } - - iline.l_addr.l_symndx = indx; - } - - if (!skipping) - { - bfd_coff_swap_lineno_out (output_bfd, (PTR) &iline, - (PTR) oeline); - oeline += linesz; - } - } - - if (bfd_seek (output_bfd, - (o->output_section->line_filepos - + o->output_section->lineno_count * linesz), - SEEK_SET) != 0 - || (bfd_write (finfo->linenos, 1, oeline - finfo->linenos, - output_bfd) - != (bfd_size_type) (oeline - finfo->linenos))) - return false; - - o->output_section->lineno_count += - (oeline - finfo->linenos) / linesz; - } - } - - /* If we swapped out a C_FILE symbol, guess that the next C_FILE - symbol will be the first symbol in the next input file. In the - normal case, this will save us from writing out the C_FILE symbol - again. */ - if (finfo->last_file_index != -1 - && (bfd_size_type) finfo->last_file_index >= syment_base) - { - finfo->last_file.n_value = output_index; - bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file, - (PTR) (finfo->outsyms - + ((finfo->last_file_index - syment_base) - * osymesz))); - } - - /* Write the modified symbols to the output file. */ - if (outsym > finfo->outsyms) - { - if (bfd_seek (output_bfd, - obj_sym_filepos (output_bfd) + syment_base * osymesz, - SEEK_SET) != 0 - || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, - output_bfd) - != (bfd_size_type) (outsym - finfo->outsyms))) - return false; - - BFD_ASSERT ((obj_raw_syment_count (output_bfd) - + (outsym - finfo->outsyms) / osymesz) - == output_index); - - obj_raw_syment_count (output_bfd) = output_index; - } - - /* Relocate the contents of each section. */ - adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx; - for (o = input_bfd->sections; o != NULL; o = o->next) - { - bfd_byte *contents; - struct coff_section_tdata *secdata; - - if (! o->linker_mark) - { - /* This section was omitted from the link. */ - continue; - } - - if ((o->flags & SEC_HAS_CONTENTS) == 0 - || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0)) - { - if ((o->flags & SEC_RELOC) != 0 - && o->reloc_count != 0) - { - ((*_bfd_error_handler) - (_("%s: relocs in section `%s', but it has no contents"), - bfd_get_filename (input_bfd), - bfd_get_section_name (input_bfd, o))); - bfd_set_error (bfd_error_no_contents); - return false; - } - - continue; - } - - secdata = coff_section_data (input_bfd, o); - if (secdata != NULL && secdata->contents != NULL) - contents = secdata->contents; - else - { - if (! bfd_get_section_contents (input_bfd, o, finfo->contents, - (file_ptr) 0, o->_raw_size)) - return false; - contents = finfo->contents; - } - - if ((o->flags & SEC_RELOC) != 0) - { - int target_index; - struct internal_reloc *internal_relocs; - struct internal_reloc *irel; - - /* Read in the relocs. */ - target_index = o->output_section->target_index; - internal_relocs = (_bfd_coff_read_internal_relocs - (input_bfd, o, false, finfo->external_relocs, - finfo->info->relocateable, - (finfo->info->relocateable - ? (finfo->section_info[target_index].relocs - + o->output_section->reloc_count) - : finfo->internal_relocs))); - if (internal_relocs == NULL) - return false; - - /* Call processor specific code to relocate the section - contents. */ - if (! bfd_coff_relocate_section (output_bfd, finfo->info, - input_bfd, o, - contents, - internal_relocs, - finfo->internal_syms, - finfo->sec_ptrs)) - return false; - - if (finfo->info->relocateable) - { - bfd_vma offset; - struct internal_reloc *irelend; - struct coff_link_hash_entry **rel_hash; - - offset = o->output_section->vma + o->output_offset - o->vma; - irel = internal_relocs; - irelend = irel + o->reloc_count; - rel_hash = (finfo->section_info[target_index].rel_hashes - + o->output_section->reloc_count); - for (; irel < irelend; irel++, rel_hash++) - { - struct coff_link_hash_entry *h; - boolean adjusted; - - *rel_hash = NULL; - - /* Adjust the reloc address and symbol index. */ - - irel->r_vaddr += offset; - - if (irel->r_symndx == -1) - continue; - - if (adjust_symndx) - { - if (! (*adjust_symndx) (output_bfd, finfo->info, - input_bfd, o, irel, - &adjusted)) - return false; - if (adjusted) - continue; - } - - h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx]; - if (h != NULL) - { - /* This is a global symbol. */ - if (h->indx >= 0) - irel->r_symndx = h->indx; - else - { - /* This symbol is being written at the end - of the file, and we do not yet know the - symbol index. We save the pointer to the - hash table entry in the rel_hash list. - We set the indx field to -2 to indicate - that this symbol must not be stripped. */ - *rel_hash = h; - h->indx = -2; - } - } - else - { - long indx; - - indx = finfo->sym_indices[irel->r_symndx]; - if (indx != -1) - irel->r_symndx = indx; - else - { - struct internal_syment *is; - const char *name; - char buf[SYMNMLEN + 1]; - - /* This reloc is against a symbol we are - stripping. This should have been handled - by the 'dont_skip_symbol' code in the while - loop at the top of this function. */ - - is = finfo->internal_syms + irel->r_symndx; - - name = (_bfd_coff_internal_syment_name - (input_bfd, is, buf)); - if (name == NULL) - return false; - - if (! ((*finfo->info->callbacks->unattached_reloc) - (finfo->info, name, input_bfd, o, - irel->r_vaddr))) - return false; - } - } - } - - o->output_section->reloc_count += o->reloc_count; - } - } - - /* Write out the modified section contents. */ - if (secdata == NULL || secdata->stab_info == NULL) - { - if (! bfd_set_section_contents (output_bfd, o->output_section, - contents, - (file_ptr) - (o->output_offset * - bfd_octets_per_byte (output_bfd)), - (o->_cooked_size != 0 - ? o->_cooked_size - : o->_raw_size))) - return false; - } - else - { - if (! (_bfd_write_section_stabs - (output_bfd, &coff_hash_table (finfo->info)->stab_info, - o, &secdata->stab_info, contents))) - return false; - } - } - - if (! finfo->info->keep_memory) - { - if (! _bfd_coff_free_symbols (input_bfd)) - return false; - } - - return true; -} - -/* Write out a global symbol. Called via coff_link_hash_traverse. */ - -boolean -_bfd_coff_write_global_sym (h, data) - struct coff_link_hash_entry *h; - PTR data; -{ - struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; - bfd *output_bfd; - struct internal_syment isym; - bfd_size_type symesz; - unsigned int i; - - output_bfd = finfo->output_bfd; - - if (h->indx >= 0) - return true; - - if (h->indx != -2 - && (finfo->info->strip == strip_all - || (finfo->info->strip == strip_some - && (bfd_hash_lookup (finfo->info->keep_hash, - h->root.root.string, false, false) - == NULL)))) - return true; - - switch (h->root.type) - { - default: - case bfd_link_hash_new: - abort (); - return false; - - case bfd_link_hash_undefined: - case bfd_link_hash_undefweak: - isym.n_scnum = N_UNDEF; - isym.n_value = 0; - break; - - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - { - asection *sec; - - sec = h->root.u.def.section->output_section; - if (bfd_is_abs_section (sec)) - isym.n_scnum = N_ABS; - else - isym.n_scnum = sec->target_index; - isym.n_value = (h->root.u.def.value - + h->root.u.def.section->output_offset); - if (! obj_pe (finfo->output_bfd)) - isym.n_value += sec->vma; - } - break; - - case bfd_link_hash_common: - isym.n_scnum = N_UNDEF; - isym.n_value = h->root.u.c.size; - break; - - case bfd_link_hash_indirect: - case bfd_link_hash_warning: - /* Just ignore these. They can't be handled anyhow. */ - return true; - } - - if (strlen (h->root.root.string) <= SYMNMLEN) - strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); - else - { - boolean hash; - bfd_size_type indx; - - hash = true; - if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) - hash = false; - indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, - false); - if (indx == (bfd_size_type) -1) - { - finfo->failed = true; - return false; - } - isym._n._n_n._n_zeroes = 0; - isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; - } - - isym.n_sclass = h->class; - isym.n_type = h->type; - - if (isym.n_sclass == C_NULL) - isym.n_sclass = C_EXT; - - /* If doing task linking and this is the pass where we convert - defined globals to statics, then do that conversion now. If the - symbol is not being converted, just ignore it and it will be - output during a later pass. */ - if (finfo->global_to_static) - { - if (! IS_EXTERNAL (output_bfd, isym)) - return true; - - isym.n_sclass = C_STAT; - } - - /* When a weak symbol is not overriden by a strong one, - turn it into an external symbol when not building a - shared or relocateable object. */ - if (! finfo->info->shared - && ! finfo->info->relocateable - && IS_WEAK_EXTERNAL (finfo->output_bfd, isym)) - isym.n_sclass = C_EXT; - - isym.n_numaux = h->numaux; - - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) finfo->outsyms); - - symesz = bfd_coff_symesz (output_bfd); - - if (bfd_seek (output_bfd, - (obj_sym_filepos (output_bfd) - + obj_raw_syment_count (output_bfd) * symesz), - SEEK_SET) != 0 - || bfd_write (finfo->outsyms, symesz, 1, output_bfd) != symesz) - { - finfo->failed = true; - return false; - } - - h->indx = obj_raw_syment_count (output_bfd); - - ++obj_raw_syment_count (output_bfd); - - /* Write out any associated aux entries. Most of the aux entries - will have been modified in _bfd_coff_link_input_bfd. We have to - handle section aux entries here, now that we have the final - relocation and line number counts. */ - for (i = 0; i < isym.n_numaux; i++) - { - union internal_auxent *auxp; - - auxp = h->aux + i; - - /* Look for a section aux entry here using the same tests that - coff_swap_aux_out uses. */ - if (i == 0 - && (isym.n_sclass == C_STAT - || isym.n_sclass == C_HIDDEN) - && isym.n_type == T_NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - { - asection *sec; - - sec = h->root.u.def.section->output_section; - if (sec != NULL) - { - auxp->x_scn.x_scnlen = (sec->_cooked_size != 0 - ? sec->_cooked_size - : sec->_raw_size); - - /* For PE, an overflow on the final link reportedly does - not matter. FIXME: Why not? */ - - if (sec->reloc_count > 0xffff - && (! obj_pe (output_bfd) - || finfo->info->relocateable)) - (*_bfd_error_handler) - (_("%s: %s: reloc overflow: 0x%lx > 0xffff"), - bfd_get_filename (output_bfd), - bfd_get_section_name (output_bfd, sec), - sec->reloc_count); - - if (sec->lineno_count > 0xffff - && (! obj_pe (output_bfd) - || finfo->info->relocateable)) - (*_bfd_error_handler) - (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"), - bfd_get_filename (output_bfd), - bfd_get_section_name (output_bfd, sec), - sec->lineno_count); - - auxp->x_scn.x_nreloc = sec->reloc_count; - auxp->x_scn.x_nlinno = sec->lineno_count; - auxp->x_scn.x_checksum = 0; - auxp->x_scn.x_associated = 0; - auxp->x_scn.x_comdat = 0; - } - } - - bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isym.n_type, - isym.n_sclass, i, isym.n_numaux, - (PTR) finfo->outsyms); - if (bfd_write (finfo->outsyms, symesz, 1, output_bfd) != symesz) - { - finfo->failed = true; - return false; - } - ++obj_raw_syment_count (output_bfd); - } - - return true; -} - -/* Write out task global symbols, converting them to statics. Called - via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do - the dirty work, if the symbol we are processing needs conversion. */ - -boolean -_bfd_coff_write_task_globals (h, data) - struct coff_link_hash_entry *h; - PTR data; -{ - struct coff_final_link_info *finfo = (struct coff_final_link_info *) data; - boolean rtnval = true; - boolean save_global_to_static; - - if (h->indx < 0) - { - switch (h->root.type) - { - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - save_global_to_static = finfo->global_to_static; - finfo->global_to_static = true; - rtnval = _bfd_coff_write_global_sym (h, data); - finfo->global_to_static = save_global_to_static; - break; - default: - break; - } - } - return (rtnval); -} - -/* Handle a link order which is supposed to generate a reloc. */ - -boolean -_bfd_coff_reloc_link_order (output_bfd, finfo, output_section, link_order) - bfd *output_bfd; - struct coff_final_link_info *finfo; - asection *output_section; - struct bfd_link_order *link_order; -{ - reloc_howto_type *howto; - struct internal_reloc *irel; - struct coff_link_hash_entry **rel_hash_ptr; - - howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); - if (howto == NULL) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - - if (link_order->u.reloc.p->addend != 0) - { - bfd_size_type size; - bfd_byte *buf; - bfd_reloc_status_type rstat; - boolean ok; - - size = bfd_get_reloc_size (howto); - buf = (bfd_byte *) bfd_zmalloc (size); - if (buf == NULL) - return false; - - rstat = _bfd_relocate_contents (howto, output_bfd, - link_order->u.reloc.p->addend, buf); - switch (rstat) - { - case bfd_reloc_ok: - break; - default: - case bfd_reloc_outofrange: - abort (); - case bfd_reloc_overflow: - if (! ((*finfo->info->callbacks->reloc_overflow) - (finfo->info, - (link_order->type == bfd_section_reloc_link_order - ? bfd_section_name (output_bfd, - link_order->u.reloc.p->u.section) - : link_order->u.reloc.p->u.name), - howto->name, link_order->u.reloc.p->addend, - (bfd *) NULL, (asection *) NULL, (bfd_vma) 0))) - { - free (buf); - return false; - } - break; - } - ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, - (file_ptr) - (link_order->offset * - bfd_octets_per_byte (output_bfd)), size); - free (buf); - if (! ok) - return false; - } - - /* Store the reloc information in the right place. It will get - swapped and written out at the end of the final_link routine. */ - - irel = (finfo->section_info[output_section->target_index].relocs - + output_section->reloc_count); - rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes - + output_section->reloc_count); - - memset (irel, 0, sizeof (struct internal_reloc)); - *rel_hash_ptr = NULL; - - irel->r_vaddr = output_section->vma + link_order->offset; - - if (link_order->type == bfd_section_reloc_link_order) - { - /* We need to somehow locate a symbol in the right section. The - symbol must either have a value of zero, or we must adjust - the addend by the value of the symbol. FIXME: Write this - when we need it. The old linker couldn't handle this anyhow. */ - abort (); - *rel_hash_ptr = NULL; - irel->r_symndx = 0; - } - else - { - struct coff_link_hash_entry *h; - - h = ((struct coff_link_hash_entry *) - bfd_wrapped_link_hash_lookup (output_bfd, finfo->info, - link_order->u.reloc.p->u.name, - false, false, true)); - if (h != NULL) - { - if (h->indx >= 0) - irel->r_symndx = h->indx; - else - { - /* Set the index to -2 to force this symbol to get - written out. */ - h->indx = -2; - *rel_hash_ptr = h; - irel->r_symndx = 0; - } - } - else - { - if (! ((*finfo->info->callbacks->unattached_reloc) - (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, - (asection *) NULL, (bfd_vma) 0))) - return false; - irel->r_symndx = 0; - } - } - - /* FIXME: Is this always right? */ - irel->r_type = howto->type; - - /* r_size is only used on the RS/6000, which needs its own linker - routines anyhow. r_extern is only used for ECOFF. */ - - /* FIXME: What is the right value for r_offset? Is zero OK? */ - - ++output_section->reloc_count; - - return true; -} - -/* A basic reloc handling routine which may be used by processors with - simple relocs. */ - -boolean -_bfd_coff_generic_relocate_section (output_bfd, info, input_bfd, - input_section, contents, relocs, syms, - sections) - bfd *output_bfd; - struct bfd_link_info *info; - bfd *input_bfd; - asection *input_section; - bfd_byte *contents; - struct internal_reloc *relocs; - struct internal_syment *syms; - asection **sections; -{ - struct internal_reloc *rel; - struct internal_reloc *relend; - - rel = relocs; - relend = rel + input_section->reloc_count; - for (; rel < relend; rel++) - { - long symndx; - struct coff_link_hash_entry *h; - struct internal_syment *sym; - bfd_vma addend; - bfd_vma val; - reloc_howto_type *howto; - bfd_reloc_status_type rstat; - - symndx = rel->r_symndx; - - if (symndx == -1) - { - h = NULL; - sym = NULL; - } - else if (symndx < 0 - || (unsigned long) symndx >= obj_raw_syment_count (input_bfd)) - { - (*_bfd_error_handler) - ("%s: illegal symbol index %ld in relocs", - bfd_get_filename (input_bfd), symndx); - return false; - } - else - { - h = obj_coff_sym_hashes (input_bfd)[symndx]; - sym = syms + symndx; - } - - /* COFF treats common symbols in one of two ways. Either the - size of the symbol is included in the section contents, or it - is not. We assume that the size is not included, and force - the rtype_to_howto function to adjust the addend as needed. */ - - if (sym != NULL && sym->n_scnum != 0) - addend = - sym->n_value; - else - addend = 0; - - howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h, - sym, &addend); - if (howto == NULL) - return false; - - /* If we are doing a relocateable link, then we can just ignore - a PC relative reloc that is pcrel_offset. It will already - have the correct value. If this is not a relocateable link, - then we should ignore the symbol value. */ - if (howto->pc_relative && howto->pcrel_offset) - { - if (info->relocateable) - continue; - if (sym != NULL && sym->n_scnum != 0) - addend += sym->n_value; - } - - val = 0; - - if (h == NULL) - { - asection *sec; - - if (symndx == -1) - { - sec = bfd_abs_section_ptr; - val = 0; - } - else - { - sec = sections[symndx]; - val = (sec->output_section->vma - + sec->output_offset - + sym->n_value); - if (! obj_pe (input_bfd)) - val -= sec->vma; - } - } - else - { - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - asection *sec; - - sec = h->root.u.def.section; - val = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); - } - - else if (h->root.type == bfd_link_hash_undefweak) - val = 0; - - else if (! info->relocateable) - { - if (! ((*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, input_section, - rel->r_vaddr - input_section->vma, true))) - return false; - } - } - - if (info->base_file) - { - /* Emit a reloc if the backend thinks it needs it. */ - if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto)) - { - /* Relocation to a symbol in a section which isn't - absolute. We output the address here to a file. - This file is then read by dlltool when generating the - reloc section. Note that the base file is not - portable between systems. We write out a long here, - and dlltool reads in a long. */ - long addr = (rel->r_vaddr - - input_section->vma - + input_section->output_offset - + input_section->output_section->vma); - if (coff_data (output_bfd)->pe) - addr -= pe_data(output_bfd)->pe_opthdr.ImageBase; - if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file) - != sizeof (long)) - { - bfd_set_error (bfd_error_system_call); - return false; - } - } - } - - rstat = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, - rel->r_vaddr - input_section->vma, - val, addend); - - switch (rstat) - { - default: - abort (); - case bfd_reloc_ok: - break; - case bfd_reloc_outofrange: - (*_bfd_error_handler) - (_("%s: bad reloc address 0x%lx in section `%s'"), - bfd_get_filename (input_bfd), - (unsigned long) rel->r_vaddr, - bfd_get_section_name (input_bfd, input_section)); - return false; - case bfd_reloc_overflow: - { - const char *name; - char buf[SYMNMLEN + 1]; - - if (symndx == -1) - name = "*ABS*"; - else if (h != NULL) - name = h->root.root.string; - else - { - name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); - if (name == NULL) - return false; - } - - if (! ((*info->callbacks->reloc_overflow) - (info, name, howto->name, (bfd_vma) 0, input_bfd, - input_section, rel->r_vaddr - input_section->vma))) - return false; - } - } - } - return true; -} |