. unsigned int _bfd_scnhsz;
. unsigned int _bfd_symesz;
. unsigned int _bfd_auxesz;
+. unsigned int _bfd_relsz;
. unsigned int _bfd_linesz;
. boolean _bfd_coff_long_filenames;
. void (*_bfd_coff_swap_filehdr_in) PARAMS ((
. bfd *abfd,
. PTR ext,
. PTR in));
+. void (*_bfd_coff_swap_reloc_in) PARAMS ((
+. bfd *abfd,
+. PTR ext,
+. PTR in));
. boolean (*_bfd_coff_bad_format_hook) PARAMS ((
. bfd *abfd,
. PTR internal_filehdr));
. arelent *r,
. unsigned int shrink,
. struct bfd_link_info *link_info));
+. boolean (*_bfd_coff_sym_is_global) PARAMS ((
+. bfd *abfd,
+. struct internal_syment *));
+. void (*_bfd_coff_compute_section_file_positions) PARAMS ((
+. bfd *abfd));
+. boolean (*_bfd_coff_relocate_section) PARAMS ((
+. 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));
.
.} bfd_coff_backend_data;
.
.#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
.#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
.#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
+.#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz)
.#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
.#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
.#define bfd_coff_swap_filehdr_in(abfd, i,o) \
.#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
. ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
.
+.#define bfd_coff_swap_reloc_in(abfd, i, o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
+.
.#define bfd_coff_bad_format_hook(abfd, filehdr) \
. ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
.
. ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
. (abfd, section, reloc, shrink, link_info))
.
+.#define bfd_coff_sym_is_global(abfd, sym)\
+. ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\
+. (abfd, sym))
+.
+.#define bfd_coff_compute_section_file_positions(abfd)\
+. ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
+. (abfd))
+.
+.#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
+. ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
+. (obfd, info, ibfd, o, con, rel, isyms, secs))
+.
*/
/* See whether the magic number matches. */
coff->symbols = (coff_symbol_type *) NULL;
coff->conversion_table = (unsigned int *) NULL;
coff->raw_syments = (struct coff_ptr_struct *) NULL;
- coff->raw_linenos = (struct lineno *) NULL;
coff->relocbase = 0;
/* make_abs_section(abfd);*/
return true;
coff = coff_data (abfd);
coff->sym_filepos = internal_f->f_symptr;
- coff->flags = internal_f->f_flags;
/* These members communicate important constants about the symbol
table to GDB's symbol-reading code. These `constants'
coff->local_auxesz = AUXESZ;
coff->local_linesz = LINESZ;
+ obj_raw_syment_count (abfd) =
+ obj_conv_table_size (abfd) =
+ internal_f->f_nsyms;
+
return (PTR) coff;
}
#ifndef I960
file_ptr old_sofar;
#endif
+ unsigned int count;
+
if (bfd_get_start_address (abfd))
{
/* A start address may have been added to the original file. In this
sofar += AOUTSZ;
sofar += abfd->section_count * SCNHSZ;
- for (current = abfd->sections;
+ for (current = abfd->sections, count = 1;
current != (asection *) NULL;
- current = current->next)
+ current = current->next, ++count)
{
+ current->target_index = count;
/* Only deal with sections which have contents */
if (!(current->flags & SEC_HAS_CONTENTS))
previous = current;
}
obj_relocbase (abfd) = sofar;
+ abfd->output_has_begun = true;
}
#ifndef RS6000COFF_C
bfd * abfd;
{
asection *current;
- unsigned int count;
-
boolean hasrelocs = false;
boolean haslinno = false;
file_ptr reloc_base;
file_ptr lineno_base;
file_ptr sym_base;
- file_ptr scn_base;
- file_ptr data_base;
unsigned long reloc_size = 0;
unsigned long lnno_size = 0;
asection *text_sec = NULL;
bfd_set_error (bfd_error_system_call);
- /* Number the output sections, starting from one on the first section
- with a name which doesn't start with a *.
- @@ The code doesn't make this check. Is it supposed to be done,
- or isn't it?? */
- count = 1;
- for (current = abfd->sections; current != (asection *) NULL;
- current = current->next)
- {
- current->target_index = count;
- count++;
- }
if (abfd->output_has_begun == false)
- {
- coff_compute_section_file_positions (abfd);
- }
+ coff_compute_section_file_positions (abfd);
- if (abfd->sections != (asection *) NULL)
- {
- scn_base = abfd->sections->filepos;
- }
- else
- {
- scn_base = 0;
- }
- if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
- return false;
reloc_base = obj_relocbase (abfd);
/* Make a pass through the symbol table to count line number entries and
put them into the correct asections */
lnno_size = coff_count_linenumbers (abfd) * LINESZ;
- data_base = scn_base;
/* Work out the size of the reloc and linno areas */
for (current = abfd->sections; current != NULL; current =
current->next)
- {
- /* We give section headers to +ve indexes */
- if (current->target_index > 0)
- {
-
- reloc_size += current->reloc_count * RELSZ;
- data_base += SCNHSZ;
- }
-
- }
+ reloc_size += current->reloc_count * RELSZ;
lineno_base = reloc_base + reloc_size;
sym_base = lineno_base + lnno_size;
for (current = abfd->sections; current != NULL; current =
current->next)
{
- if (current->target_index > 0)
+ if (current->lineno_count)
{
-
- if (current->lineno_count)
- {
- current->line_filepos = lineno_base;
- current->moving_line_filepos = lineno_base;
- lineno_base += current->lineno_count * LINESZ;
- }
- else
- {
- current->line_filepos = 0;
- }
- if (current->reloc_count)
- {
- current->rel_filepos = reloc_base;
- reloc_base += current->reloc_count * RELSZ;
- }
- else
- {
- current->rel_filepos = 0;
- }
+ current->line_filepos = lineno_base;
+ current->moving_line_filepos = lineno_base;
+ lineno_base += current->lineno_count * LINESZ;
+ }
+ else
+ {
+ current->line_filepos = 0;
+ }
+ if (current->reloc_count)
+ {
+ current->rel_filepos = reloc_base;
+ reloc_base += current->reloc_count * RELSZ;
+ }
+ else
+ {
+ current->rel_filepos = 0;
}
}
-
-
/* Write section headers to the file. */
internal_f.f_nscns = 0;
if (bfd_seek (abfd,
return false;
{
-#if 0
- unsigned int pad = abfd->flags & D_PAGED ? data_base : 0;
-#endif
- unsigned int pad = 0;
-
for (current = abfd->sections;
current != NULL;
current = current->next)
{
struct internal_scnhdr section;
- if (current->target_index > 0)
- {
- internal_f.f_nscns++;
- strncpy (&(section.s_name[0]), current->name, 8);
+
+ internal_f.f_nscns++;
+ strncpy (&(section.s_name[0]), current->name, 8);
#ifdef _LIB
- /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
+ /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
Ian Taylor <ian@cygnus.com>. */
- if (strcmp (current->name, _LIB) == 0)
- section.s_vaddr = 0;
- else
-#endif
- section.s_vaddr = current->lma + pad;
- section.s_paddr = current->lma + pad;
- section.s_size = current->_raw_size - pad;
- /*
- If this section has no size or is unloadable then the scnptr
- will be 0 too
- */
- if (current->_raw_size - pad == 0 ||
- (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
- {
- section.s_scnptr = 0;
- }
- else
- {
- section.s_scnptr = current->filepos;
- }
- section.s_relptr = current->rel_filepos;
- section.s_lnnoptr = current->line_filepos;
- section.s_nreloc = current->reloc_count;
- section.s_nlnno = current->lineno_count;
- if (current->reloc_count != 0)
- hasrelocs = true;
- if (current->lineno_count != 0)
- haslinno = true;
-
- section.s_flags = sec_to_styp_flags (current->name, current->flags);
-
- if (!strcmp (current->name, _TEXT))
- {
- text_sec = current;
- }
- else if (!strcmp (current->name, _DATA))
- {
- data_sec = current;
+ if (strcmp (current->name, _LIB) == 0)
+ section.s_vaddr = 0;
+ else
+#endif
+ section.s_vaddr = current->lma;
+ section.s_paddr = current->lma;
+ section.s_size = current->_raw_size;
+ /*
+ If this section has no size or is unloadable then the scnptr
+ will be 0 too
+ */
+ if (current->_raw_size == 0 ||
+ (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
+ {
+ section.s_scnptr = 0;
+ }
+ else
+ {
+ section.s_scnptr = current->filepos;
+ }
+ section.s_relptr = current->rel_filepos;
+ section.s_lnnoptr = current->line_filepos;
+ section.s_nreloc = current->reloc_count;
+ section.s_nlnno = current->lineno_count;
+ if (current->reloc_count != 0)
+ hasrelocs = true;
+ if (current->lineno_count != 0)
+ haslinno = true;
+
+ section.s_flags = sec_to_styp_flags (current->name, current->flags);
+
+ if (!strcmp (current->name, _TEXT))
+ {
+ text_sec = current;
+ }
+ else if (!strcmp (current->name, _DATA))
+ {
+ data_sec = current;
#ifdef TWO_DATA_SECS
- }
- else if (!strcmp (current->name, ".data2"))
- {
- data_sec = current;
+ }
+ else if (!strcmp (current->name, ".data2"))
+ {
+ data_sec = current;
#endif /* TWO_DATA_SECS */
- }
- else if (!strcmp (current->name, _BSS))
- {
- bss_sec = current;
- }
+ }
+ else if (!strcmp (current->name, _BSS))
+ {
+ bss_sec = current;
+ }
#ifdef I960
- section.s_align = (current->alignment_power
- ? 1 << current->alignment_power
- : 0);
+ section.s_align = (current->alignment_power
+ ? 1 << current->alignment_power
+ : 0);
#endif
- {
- SCNHDR buff;
-
- coff_swap_scnhdr_out (abfd, §ion, &buff);
- if (bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ)
- return false;
+ {
+ SCNHDR buff;
- }
+ coff_swap_scnhdr_out (abfd, §ion, &buff);
+ if (bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ)
+ return false;
- pad = 0;
- }
+ }
}
}
*/
internal_f.f_timdat = 0;
- if (bfd_get_symcount (abfd) != 0)
+ if (obj_raw_syment_count (abfd) != 0)
internal_f.f_symptr = sym_base;
else
internal_f.f_symptr = 0;
internal_f.f_flags |= F_RELFLG;
if (!haslinno)
internal_f.f_flags |= F_LNNO;
- if (0 == bfd_get_symcount (abfd))
+ if (obj_raw_syment_count (abfd) == 0)
internal_f.f_flags |= F_LSYMS;
if (abfd->flags & EXEC_P)
internal_f.f_flags |= F_EXEC;
}
internal_a.entry = bfd_get_start_address (abfd);
- internal_f.f_nsyms = bfd_get_symcount (abfd);
+ internal_f.f_nsyms = obj_raw_syment_count (abfd);
/* now write them */
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
} /* on error */
/* Allocate enough room for all the symbols in cached form */
- cached_area =
- (coff_symbol_type *)
- bfd_alloc (abfd, (size_t) (bfd_get_symcount (abfd) * sizeof (coff_symbol_type)));
+ cached_area = ((coff_symbol_type *)
+ bfd_alloc (abfd,
+ (obj_raw_syment_count (abfd)
+ * sizeof (coff_symbol_type))));
if (cached_area == NULL)
{
bfd_set_error (bfd_error_no_memory);
return false;
} /* on error */
- table_ptr =
- (unsigned int *)
- bfd_alloc (abfd, (size_t) (bfd_get_symcount (abfd) * sizeof (unsigned int)));
+ table_ptr = ((unsigned int *)
+ bfd_alloc (abfd,
+ (obj_raw_syment_count (abfd)
+ * sizeof (unsigned int))));
if (table_ptr == NULL)
{
else
{
coff_symbol_type *dst = cached_area;
- unsigned int last_native_index = bfd_get_symcount (abfd);
+ unsigned int last_native_index = obj_raw_syment_count (abfd);
unsigned int this_index = 0;
while (this_index < last_native_index)
{
obj_symbols (abfd) = cached_area;
obj_raw_syments (abfd) = native_symbols;
- obj_conv_table_size (abfd) = bfd_get_symcount (abfd);
bfd_get_symcount (abfd) = number_of_symbols;
obj_convert (abfd) = table_ptr;
/* Slurp the line tables for each section too */
return true;
} /* coff_slurp_symbol_table() */
+/* Check whether a symbol is globally visible. This is used by the
+ COFF backend linker code in cofflink.c, since a couple of targets
+ have globally visible symbols which are not class C_EXT. This
+ function need not handle the case of n_class == C_EXT. */
+
+#undef OTHER_GLOBAL_CLASS
+
+#ifdef I960
+#define OTHER_GLOBAL_CLASS C_LEAFEXT
+#endif
+
+#ifdef RS6000COFF_C
+#define OTHER_GLOBAL_CLASS C_HIDEXT
+#endif
+
+#ifdef OTHER_GLOBAL_CLASS
+
+static boolean
+coff_sym_is_global (abfd, syment)
+ bfd *abfd;
+ struct internal_syment *syment;
+{
+ if (syment->n_sclass == OTHER_GLOBAL_CLASS)
+ return true;
+ return false;
+}
+
+#undef OTHER_GLOBAL_CLASS
+
+#else /* ! defined (OTHER_GLOBAL_CLASS) */
+
+/* sym_is_global should not be defined if it has nothing to do. */
+
+#define coff_sym_is_global 0
+
+#endif /* ! defined (OTHER_GLOBAL_CLASS) */
+
/*
SUBSUBSECTION
Reading relocations
cache_ptr = reloc_cache + idx;
src = native_relocs + idx;
- bfd_swap_reloc_in (abfd, src, &dst);
+ coff_swap_reloc_in (abfd, src, &dst);
RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
#else
cache_ptr = reloc_cache + idx;
src = native_relocs + idx;
- bfd_swap_reloc_in (abfd, src, &dst);
+ coff_swap_reloc_in (abfd, src, &dst);
cache_ptr->address = dst.r_vaddr;
}
#endif
+/* If coff_relocate_section is defined, we can use the optimized COFF
+ backend linker. Otherwise we must continue to use the old linker. */
+#ifdef coff_relocate_section
+#define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create
+#define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols
+#define coff_bfd_final_link _bfd_coff_final_link
+#else /* ! defined (coff_relocate_section) */
+#define coff_relocate_section NULL
+#define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
+#define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#define coff_bfd_final_link _bfd_generic_final_link
+#endif /* ! defined (coff_relocate_section) */
+
static CONST bfd_coff_backend_data bfd_coff_std_swap_table =
{
coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in,
coff_swap_lineno_out, coff_swap_reloc_out,
coff_swap_filehdr_out, coff_swap_aouthdr_out,
coff_swap_scnhdr_out,
- FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, LINESZ,
+ FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ,
#ifdef COFF_LONG_FILENAMES
true,
#else
false,
#endif
coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in,
- coff_bad_format_hook, coff_set_arch_mach_hook, coff_mkobject_hook,
- styp_to_sec_flags, coff_make_section_hook, coff_set_alignment_hook,
- coff_slurp_symbol_table, symname_in_debug_hook,
- coff_reloc16_extra_cases, coff_reloc16_estimate
+ coff_swap_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
+ coff_mkobject_hook, styp_to_sec_flags, coff_make_section_hook,
+ coff_set_alignment_hook, coff_slurp_symbol_table, symname_in_debug_hook,
+ coff_reloc16_extra_cases, coff_reloc16_estimate,
+ coff_sym_is_global, coff_compute_section_file_positions,
+ coff_relocate_section
};
#define coff_close_and_cleanup _bfd_generic_close_and_cleanup
#define coff_bfd_get_relocated_section_contents \
bfd_generic_get_relocated_section_contents
#define coff_bfd_relax_section bfd_generic_relax_section
-#define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
-#define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
-#define coff_bfd_final_link _bfd_generic_final_link
--- /dev/null
+/* COFF specific linker code.
+ Copyright 1994 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., 675 Mass Ave, Cambridge, MA 02139, 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"
+
+#define STRING_SIZE_SIZE (4)
+
+/* Information we keep for each section in the output file when doing
+ a relocateable link. */
+
+struct coff_link_section_info
+{
+ /* The relocs to be output. */
+ struct internal_reloc *relocs;
+ /* For each reloc against a global symbol whose index was not known
+ when the reloc was handled, the global hash table entry. */
+ struct coff_link_hash_entry **rel_hashes;
+};
+
+/* Information that we pass around while doing the final link step. */
+
+struct coff_final_link_info
+{
+ /* General link information. */
+ struct bfd_link_info *info;
+ /* Output BFD. */
+ bfd *output_bfd;
+ /* Used to indicate failure in traversal routine. */
+ boolean failed;
+ /* Hash table for long symbol name. */
+ struct bfd_strtab_hash *strtab;
+ /* When doing a relocateable link, an array of information kept for
+ each output section, indexed by the target_index field. */
+ struct coff_link_section_info *section_info;
+ /* Symbol index of last C_FILE symbol (-1 if none). */
+ long last_file_index;
+ /* Contents of last C_FILE symbol. */
+ struct internal_syment last_file;
+ /* Buffer large enough to hold swapped symbols of any input file. */
+ struct internal_syment *internal_syms;
+ /* Buffer large enough to hold sections of symbols of any input file. */
+ asection **sec_ptrs;
+ /* Buffer large enough to hold output indices of symbols of any
+ input file. */
+ long *sym_indices;
+ /* Buffer large enough to hold output symbols for any input file. */
+ bfd_byte *outsyms;
+ /* Buffer large enough to hold external line numbers for any input
+ section. */
+ bfd_byte *linenos;
+ /* Buffer large enough to hold any input section. */
+ bfd_byte *contents;
+ /* Buffer large enough to hold external relocs of any input section. */
+ bfd_byte *external_relocs;
+ /* Buffer large enough to hold swapped relocs of any input section. */
+ struct internal_reloc *internal_relocs;
+};
+
+static struct bfd_hash_entry *coff_link_hash_newfunc
+ PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
+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_get_symbols PARAMS ((bfd *));
+static const char *coff_read_string_table PARAMS ((bfd *));
+static boolean coff_link_free_symbols PARAMS ((bfd *));
+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 boolean coff_link_input_bfd
+ PARAMS ((struct coff_final_link_info *, bfd *));
+static boolean coff_write_global_sym
+ PARAMS ((struct coff_link_hash_entry *, PTR));
+static boolean coff_reloc_link_order
+ PARAMS ((bfd *, struct coff_final_link_info *, asection *,
+ struct bfd_link_order *));
+
+/* Create an entry in a COFF linker hash table. */
+
+static struct bfd_hash_entry *
+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)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ 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;
+}
+
+/* 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 *)
+ malloc (sizeof (struct coff_link_hash_table)));
+ if (ret == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+ if (! _bfd_link_hash_table_init (&ret->root, abfd,
+ coff_link_hash_newfunc))
+ {
+ free (ret);
+ return (struct bfd_link_hash_table *) NULL;
+ }
+ return &ret->root;
+}
+
+/* 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 (! coff_link_get_symbols (abfd))
+ return false;
+ if (! coff_link_add_symbols (abfd, info))
+ return false;
+ if (! info->keep_memory)
+ {
+ if (! coff_link_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 (! coff_link_get_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 (! coff_link_free_symbols (abfd))
+ return false;
+ }
+
+ return true;
+}
+
+/* Read in the external symbols. */
+
+static boolean
+coff_link_get_symbols (abfd)
+ bfd *abfd;
+{
+ bfd_size_type symesz;
+ size_t size;
+ PTR syms;
+
+ if (obj_coff_external_syms (abfd) != NULL)
+ return true;
+
+ symesz = bfd_coff_symesz (abfd);
+
+ size = obj_raw_syment_count (abfd) * symesz;
+
+ syms = malloc (size);
+ if (syms == NULL && size != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
+ || bfd_read (syms, size, 1, abfd) != size)
+ {
+ if (syms != NULL)
+ free (syms);
+ return false;
+ }
+
+ obj_coff_external_syms (abfd) = syms;
+
+ return true;
+}
+
+/* Read in the external strings. The strings are not loaded until
+ they are needed. This is because we have no simple way of
+ detecting a missing string table in an archive. */
+
+static const char *
+coff_read_string_table (abfd)
+ bfd *abfd;
+{
+ char extstrsize[STRING_SIZE_SIZE];
+ size_t strsize;
+ char *strings;
+
+ if (obj_coff_strings (abfd) != NULL)
+ return obj_coff_strings (abfd);
+
+ if (bfd_seek (abfd,
+ (obj_sym_filepos (abfd)
+ + obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd)),
+ SEEK_SET) != 0)
+ return NULL;
+
+ if (bfd_read (extstrsize, sizeof extstrsize, 1, abfd) != sizeof extstrsize)
+ {
+ if (bfd_get_error () != bfd_error_file_truncated)
+ return NULL;
+
+ /* There is no string table. */
+ strsize = STRING_SIZE_SIZE;
+ }
+ else
+ {
+#if STRING_SIZE_SIZE == 4
+ strsize = bfd_h_get_32 (abfd, extstrsize);
+#else
+ #error Change bfd_h_get_32
+#endif
+ }
+
+ strings = malloc (strsize);
+ if (strings == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ if (bfd_read (strings + STRING_SIZE_SIZE,
+ strsize - STRING_SIZE_SIZE, 1, abfd)
+ != strsize - STRING_SIZE_SIZE)
+ {
+ free (strings);
+ return NULL;
+ }
+
+ obj_coff_strings (abfd) = strings;
+
+ return strings;
+}
+
+/* Free up the external symbols and strings read from a COFF file. */
+
+static boolean
+coff_link_free_symbols (abfd)
+ bfd *abfd;
+{
+ if (obj_coff_external_syms (abfd) != NULL)
+ {
+ free (obj_coff_external_syms (abfd));
+ obj_coff_external_syms (abfd) = NULL;
+ }
+ if (obj_coff_strings (abfd) != NULL)
+ {
+ free (obj_coff_strings (abfd));
+ obj_coff_strings (abfd) = NULL;
+ }
+ 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;
+{
+ boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *));
+ const char *strings;
+ bfd_size_type symesz;
+ bfd_byte *esym;
+ bfd_byte *esym_end;
+
+ *pneeded = false;
+
+ sym_is_global = coff_backend_info (abfd)->_bfd_coff_sym_is_global;
+ strings = NULL;
+
+ 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;
+
+ bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
+
+ if ((sym.n_sclass == C_EXT
+ || (sym_is_global && (*sym_is_global) (abfd, &sym)))
+ && (sym.n_scnum != 0 || sym.n_value != 0))
+ {
+ 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. */
+
+ /* FIXME: It's not clear this will work correctly if sizeof
+ (_n_zeroes) != 4. */
+ if (sym._n._n_n._n_zeroes != 0
+ || sym._n._n_n._n_offset == 0)
+ {
+ memcpy (buf, sym._n._n_name, SYMNMLEN);
+ buf[SYMNMLEN] = '\0';
+ name = buf;
+ }
+ else
+ {
+ BFD_ASSERT (sym._n._n_n._n_offset >= STRING_SIZE_SIZE);
+ if (strings == NULL)
+ {
+ strings = coff_read_string_table (abfd);
+ if (strings == NULL)
+ return false;
+ }
+ name = strings + sym._n._n_n._n_offset;
+ }
+
+ 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;
+{
+ boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *));
+ const char *strings;
+ 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;
+
+ sym_is_global = coff_backend_info (abfd)->_bfd_coff_sym_is_global;
+ strings = NULL;
+
+ 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)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ 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;
+ boolean copy;
+
+ bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
+
+ if (sym.n_sclass == C_EXT
+ || (sym_is_global && (*sym_is_global) (abfd, &sym)))
+ {
+ const char *name;
+ char buf[SYMNMLEN + 1];
+ flagword flags;
+ asection *section;
+ bfd_vma value;
+
+ /* This symbol is externally visible. */
+
+ /* FIXME: It's not clear this will work correctly if sizeof
+ (_n_zeroes) != 4. */
+ copy = default_copy;
+ if (sym._n._n_n._n_zeroes == 0
+ && sym._n._n_n._n_offset != 0)
+ {
+ BFD_ASSERT (sym._n._n_n._n_offset >= STRING_SIZE_SIZE);
+ if (strings == NULL)
+ {
+ strings = coff_read_string_table (abfd);
+ if (strings == NULL)
+ return false;
+ }
+ name = strings + sym._n._n_n._n_offset;
+ }
+ else
+ {
+ memcpy (buf, sym._n._n_name, SYMNMLEN);
+ buf[SYMNMLEN] = '\0';
+ name = buf;
+ copy = true;
+ }
+
+ value = sym.n_value;
+
+ if (sym.n_scnum == 0)
+ {
+ if (value == 0)
+ {
+ flags = 0;
+ section = bfd_und_section_ptr;
+ }
+ else
+ {
+ flags = BSF_GLOBAL;
+ section = bfd_com_section_ptr;
+ }
+ }
+ else
+ {
+ flags = BSF_EXPORT | BSF_GLOBAL;
+ section = coff_section_from_bfd_index (abfd, sym.n_scnum);
+ value -= section->vma;
+ }
+
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, name, flags, section, value,
+ (const char *) NULL, copy, false,
+ (struct bfd_link_hash_entry **) sym_hash)))
+ return false;
+
+ if (info->hash->creator->flavour == bfd_get_flavour (abfd))
+ {
+ 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)->class = sym.n_sclass;
+ (*sym_hash)->type = sym.n_type;
+ (*sym_hash)->numaux = sym.n_numaux;
+ (*sym_hash)->auxbfd = abfd;
+ if (sym.n_numaux != 0)
+ {
+ union internal_auxent *alloc;
+ unsigned int i;
+ bfd_byte *eaux;
+ union internal_auxent *iaux;
+
+ alloc = bfd_hash_allocate (&info->hash->table,
+ (sym.n_numaux
+ * sizeof (*alloc)));
+ if (alloc == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ 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;
+ }
+ }
+ }
+ }
+
+ esym += (sym.n_numaux + 1) * symesz;
+ sym_hash += sym.n_numaux + 1;
+ }
+
+ return true;
+}
+
+/* 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;
+ asection *o;
+ struct bfd_link_order *p;
+ size_t max_contents_size;
+ size_t max_sym_count;
+ size_t max_lineno_count;
+ size_t max_reloc_count;
+ size_t max_output_reloc_count;
+ 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.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.strtab = _bfd_stringtab_init ();
+ if (finfo.strtab == NULL)
+ goto error_return;
+
+ /* Compute the file positions for all the sections. */
+ if (! abfd->output_has_begun)
+ bfd_coff_compute_section_file_positions (abfd);
+
+ /* 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;
+ 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;
+
+ 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 doing a relocateable link, allocate space for the pointers we
+ need to keep. */
+ if (info->relocateable)
+ {
+ unsigned int i;
+
+ finfo.section_info = ((struct coff_link_section_info *)
+ malloc (abfd->section_count
+ * sizeof (struct coff_link_section_info)));
+ if (finfo.section_info == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ 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 *)
+ malloc (o->reloc_count * sizeof (struct internal_reloc)));
+ finfo.section_info[o->target_index].rel_hashes =
+ ((struct coff_link_hash_entry **)
+ 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)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ 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 *)
+ malloc (max_sym_count
+ * sizeof (struct internal_syment)));
+ finfo.sec_ptrs = (asection **) malloc (max_sym_count * sizeof (asection *));
+ finfo.sym_indices = (long *) malloc (max_sym_count * sizeof (long));
+ finfo.outsyms = (bfd_byte *) malloc ((max_sym_count + 1) * symesz);
+ finfo.linenos = (bfd_byte *) malloc (max_lineno_count
+ * bfd_coff_linesz (abfd));
+ finfo.contents = (bfd_byte *) malloc (max_contents_size);
+ finfo.external_relocs = (bfd_byte *) malloc (max_reloc_count * relsz);
+ if (! info->relocateable)
+ finfo.internal_relocs = ((struct internal_reloc *)
+ 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))
+ {
+ bfd_set_error (bfd_error_no_memory);
+ 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;
+ 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_get_flavour (p->u.indirect.section->owner)
+ == bfd_target_coff_flavour))
+ {
+ sub = p->u.indirect.section->owner;
+ if (! sub->output_has_begun)
+ {
+ if (! 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 (! coff_reloc_link_order (abfd, &finfo, o, p))
+ goto error_return;
+ }
+ else
+ {
+ if (! _bfd_default_link_order (abfd, info, o, p))
+ goto error_return;
+ }
+ }
+ }
+
+ /* Free up the buffers used by coff_link_input_bfd. */
+ 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
+ && 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;
+ }
+
+ /* Write out the global symbols. */
+ finfo.failed = false;
+ coff_link_hash_traverse (coff_hash_table (info), coff_write_global_sym,
+ (PTR) &finfo);
+ if (finfo.failed)
+ goto error_return;
+
+ /* The outsyms buffer is used by coff_write_global_sym. */
+ if (finfo.outsyms != NULL)
+ {
+ free (finfo.outsyms);
+ finfo.outsyms = NULL;
+ }
+
+ if (info->relocateable)
+ {
+ /* 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 *) malloc (max_output_reloc_count * relsz);
+ if (external_relocs == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ 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;
+ }
+
+ /* Write out the string table. */
+ 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,
+ 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;
+
+ _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 (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;
+}
+
+/* Link an input file into the linker output file. This function
+ handles all the sections and relocations of the input file at once. */
+
+static boolean
+coff_link_input_bfd (finfo, input_bfd)
+ struct coff_final_link_info *finfo;
+ bfd *input_bfd;
+{
+ boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *));
+ bfd *output_bfd;
+ const char *strings;
+ bfd_size_type syment_base;
+ unsigned int n_tmask;
+ unsigned int n_btshft;
+ 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;
+ long output_index;
+ bfd_byte *outsym;
+ struct coff_link_hash_entry **sym_hash;
+ bfd_size_type relsz;
+ asection *o;
+
+ /* Move all the symbols to the output file. */
+
+ output_bfd = finfo->output_bfd;
+ sym_is_global = coff_backend_info (input_bfd)->_bfd_coff_sym_is_global;
+ 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));
+
+ n_tmask = coff_data (input_bfd)->local_n_tmask;
+ n_btshft = coff_data (input_bfd)->local_n_btshft;
+
+ /* Define macros so that ISFCN, et. al., macros work correctly. */
+#define N_TMASK n_tmask
+#define N_BTSHFT n_btshft
+
+ copy = false;
+ if (! finfo->info->keep_memory)
+ copy = true;
+ hash = true;
+ if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
+ hash = false;
+
+ if (! coff_link_get_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;
+ while (esym < esym_end)
+ {
+ struct internal_syment isym;
+ boolean skip;
+ boolean global;
+ 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;
+
+ *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum);
+ *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)
+ skip = true;
+
+ if (! skip)
+ {
+ if (isym.n_sclass == C_EXT
+ || (sym_is_global && (*sym_is_global) (input_bfd, &isym)))
+ {
+ /* This is a global symbol. Global symbols come at the
+ end of the symbol table, so skip them for now.
+ Function symbols, however, are an exception, and are
+ not moved to the end. */
+ global = true;
+ if (! ISFCN (isym.n_type))
+ skip = true;
+ }
+ else
+ {
+ /* This is a local symbol. Skip it if we are discarding
+ local symbols. */
+ if (finfo->info->discard == discard_all)
+ skip = true;
+ }
+ }
+
+ /* If we stripping debugging symbols, and this is a debugging
+ symbol, then skip it. */
+ if (! skip
+ && finfo->info->strip == strip_debugger
+ && isym.n_scnum == N_DEBUG)
+ 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];
+
+ if (isym._n._n_n._n_zeroes == 0
+ && isym._n._n_n._n_offset != 0)
+ {
+ if (strings == NULL)
+ {
+ strings = coff_read_string_table (input_bfd);
+ if (strings == NULL)
+ return false;
+ }
+ name = strings + isym._n._n_n._n_offset;
+ }
+ else
+ {
+ memcpy (buf, isym._n._n_name, SYMNMLEN);
+ buf[SYMNMLEN] = '\0';
+ name = buf;
+ }
+
+ if ((finfo->info->strip == strip_some
+ && (bfd_hash_lookup (finfo->info->keep_hash, name, false,
+ false) == NULL))
+ || (! global
+ && finfo->info->discard == discard_l
+ && strncmp (name, finfo->info->lprefix,
+ finfo->info->lprefix_len) == 0))
+ 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. */
+ BFD_ASSERT (isym._n._n_n._n_offset >= STRING_SIZE_SIZE);
+ if (strings == NULL)
+ {
+ strings = coff_read_string_table (input_bfd);
+ if (strings == NULL)
+ return false;
+ }
+ name = strings + isym._n._n_n._n_offset;
+ 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;
+ }
+
+ if (isym.n_scnum > 0)
+ {
+ isym.n_scnum = (*secpp)->output_section->target_index;
+ isym.n_value += ((*secpp)->output_section->vma
+ + (*secpp)->output_offset
+ - (*secpp)->vma);
+ }
+
+ /* 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 (isym.n_sclass == C_FILE)
+ {
+ if (finfo->last_file_index != -1
+ && finfo->last_file.n_value != output_index)
+ {
+ /* We must correct the value of the last C_FILE entry. */
+ finfo->last_file.n_value = output_index;
+ if (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;
+ }
+
+ /* 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];
+ BFD_ASSERT (h != NULL);
+ 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
+ && (*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;
+ BFD_ASSERT (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)
+ {
+ const char *filename;
+ bfd_size_type indx;
+
+ BFD_ASSERT (auxp->x_file.x_n.x_offset
+ >= STRING_SIZE_SIZE);
+ if (strings == NULL)
+ {
+ strings = 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)
+ {
+ long indx;
+
+ if (ISFCN (isymp->n_type)
+ || ISTAG (isymp->n_sclass)
+ || isymp->n_sclass == C_BLOCK)
+ {
+ 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
+ && 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))
+ {
+ indx = finfo->sym_indices[indx];
+ if (indx < 0)
+ auxp->x_sym.x_tagndx.l = 0;
+ else
+ auxp->x_sym.x_tagndx.l = indx;
+ }
+ }
+
+ 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;
+
+ if (o->lineno_count == 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;
+ elineend = eline + linesz * o->lineno_count;
+ 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
+ && (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 should really
+ just discard the line numbers, but that would
+ be a pain because we have already counted
+ them. */
+ indx = 0;
+ }
+ 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);
+ }
+ }
+
+ iline.l_addr.l_symndx = indx;
+ }
+
+ bfd_coff_swap_lineno_out (output_bfd, (PTR) &iline, (PTR) eline);
+ }
+
+ if (bfd_seek (output_bfd,
+ (o->output_section->line_filepos
+ + o->output_section->lineno_count * linesz),
+ SEEK_SET) != 0
+ || bfd_write (finfo->linenos, linesz, o->lineno_count,
+ output_bfd) != linesz * o->lineno_count)
+ return false;
+
+ o->output_section->lineno_count += o->lineno_count;
+ }
+ }
+
+ /* 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 >= 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) != 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. */
+ relsz = bfd_coff_relsz (input_bfd);
+ for (o = input_bfd->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
+
+ if (! bfd_get_section_contents (input_bfd, o, finfo->contents,
+ (file_ptr) 0, o->_raw_size))
+ return false;
+
+ if ((o->flags & SEC_RELOC) != 0)
+ {
+ int target_index;
+ struct internal_reloc *internal_relocs;
+ bfd_byte *erel;
+ bfd_byte *erel_end;
+ struct internal_reloc *irel;
+
+ /* Read in the relocs. */
+ if (bfd_seek (input_bfd, o->rel_filepos, SEEK_SET) != 0
+ || (bfd_read (finfo->external_relocs, relsz, o->reloc_count,
+ input_bfd) != relsz * o->reloc_count))
+ return false;
+
+ /* If we are doing a relocateable link, we keep the swapped
+ in relocs in memory, and don't write them out until the
+ end of the link. */
+ target_index = o->output_section->target_index;
+ if (! finfo->info->relocateable)
+ internal_relocs = finfo->internal_relocs;
+ else
+ internal_relocs = (finfo->section_info[target_index].relocs
+ + o->output_section->reloc_count);
+
+ /* Swap in the relocs. */
+ erel = finfo->external_relocs;
+ erel_end = erel + relsz * o->reloc_count;
+ irel = internal_relocs;
+ for (; erel < erel_end; erel += relsz, irel++)
+ bfd_coff_swap_reloc_in (input_bfd, (PTR) erel, (PTR) irel);
+
+ /* Call processor specific code to relocate the section
+ contents. */
+ if (! bfd_coff_relocate_section (output_bfd, finfo->info,
+ input_bfd, o,
+ finfo->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;
+ for (; irel < irelend; irel++, rel_hash++)
+ {
+ struct coff_link_hash_entry *h;
+
+ *rel_hash = NULL;
+
+ /* Adjust the reloc address and symbol index. */
+
+ irel->r_vaddr += offset;
+
+ 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. It would be possible to
+ handle this case, but I don't think it's
+ worth it. */
+ is = finfo->internal_syms + irel->r_symndx;
+
+ if (is->_n._n_n._n_zeroes == 0
+ && is->_n._n_n._n_offset != 0)
+ {
+ if (strings == NULL)
+ {
+ strings = coff_read_string_table (input_bfd);
+ if (strings == NULL)
+ return false;
+ }
+ name = strings + is->_n._n_n._n_offset;
+ }
+ else
+ {
+ memcpy (buf, is->_n._n_name, SYMNMLEN);
+ buf[SYMNMLEN] = '\0';
+ name = buf;
+ }
+
+ 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 (! bfd_set_section_contents (output_bfd, o->output_section,
+ finfo->contents, o->output_offset,
+ (o->_cooked_size != 0
+ ? o->_cooked_size
+ : o->_raw_size)))
+ return false;
+ }
+
+ if (! finfo->info->keep_memory)
+ {
+ if (! coff_link_free_symbols (input_bfd))
+ return false;
+ }
+
+ return true;
+}
+
+/* Write out a global symbol. Called via coff_link_hash_traverse. */
+
+static boolean
+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_weak:
+ isym.n_scnum = N_UNDEF;
+ isym.n_value = 0;
+ break;
+
+ case bfd_link_hash_defined:
+ {
+ 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
+ + sec->vma
+ + h->root.u.def.section->output_offset);
+ }
+ 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;
+
+ 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. There normally will be
+ none. If there are any, I have no idea how to modify them. */
+ for (i = 0; i < isym.n_numaux; i++)
+ {
+ bfd_coff_swap_aux_out (output_bfd, (PTR) (h->aux + i), 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;
+}
+
+/* Handle a link order which is supposed to generate a reloc. */
+
+static boolean
+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;
+{
+ const 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)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ 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, 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 = coff_link_hash_lookup (coff_hash_table (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;
+}
projects / deliverable / binutils-gdb.git / commitdiff
