/* BFD back-end for binary objects.
- Copyright 1994 Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+ Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>
This file is part of BFD, the Binary File Descriptor library.
the file. objcopy cooperates by specially setting the start
address to zero by default. */
-#include <ctype.h>
-
#include "bfd.h"
#include "sysdep.h"
+#include "safe-ctype.h"
#include "libbfd.h"
/* Any bfd we create by reading a binary file has three symbols:
static long binary_get_symtab_upper_bound PARAMS ((bfd *));
static char *mangle_name PARAMS ((bfd *, char *));
static long binary_get_symtab PARAMS ((bfd *, asymbol **));
-static asymbol *binary_make_empty_symbol PARAMS ((bfd *));
static void binary_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *));
static boolean binary_set_section_contents
PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
static int binary_sizeof_headers PARAMS ((bfd *, boolean));
+/* Set by external programs - specifies the BFD architecture
+ to use when creating binary BFDs. */
+enum bfd_architecture bfd_external_binary_architecture = bfd_arch_unknown;
+
/* Create a binary object. Invoked via bfd_set_format. */
static boolean
binary_mkobject (abfd)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
{
return true;
}
abfd->tdata.any = (PTR) sec;
+ if (bfd_get_arch_info (abfd) != NULL)
+ {
+ if ((bfd_get_arch_info (abfd)->arch == bfd_arch_unknown)
+ && (bfd_external_binary_architecture != bfd_arch_unknown))
+ bfd_set_arch_info (abfd, bfd_lookup_arch (bfd_external_binary_architecture, 0));
+ }
+
return abfd->xvec;
}
static boolean
binary_get_section_contents (abfd, section, location, offset, count)
bfd *abfd;
- asection *section;
+ asection *section ATTRIBUTE_UNUSED;
PTR location;
file_ptr offset;
bfd_size_type count;
{
if (bfd_seek (abfd, offset, SEEK_SET) != 0
- || bfd_read (location, 1, count, abfd) != count)
+ || bfd_bread (location, count, abfd) != count)
return false;
return true;
}
static long
binary_get_symtab_upper_bound (abfd)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
{
return (BIN_SYMS + 1) * sizeof (asymbol *);
}
bfd *abfd;
char *suffix;
{
- int size;
+ bfd_size_type size;
char *buf;
char *p;
/* Change any non-alphanumeric characters to underscores. */
for (p = buf; *p; p++)
- if (! isalnum (*p))
+ if (! ISALNUM (*p))
*p = '_';
return buf;
asection *sec = (asection *) abfd->tdata.any;
asymbol *syms;
unsigned int i;
+ bfd_size_type amt = BIN_SYMS * sizeof (asymbol);
- syms = (asymbol *) bfd_alloc (abfd, BIN_SYMS * sizeof (asymbol));
+ syms = (asymbol *) bfd_alloc (abfd, amt);
if (syms == NULL)
return false;
return BIN_SYMS;
}
-/* Make an empty symbol. */
-
-static asymbol *
-binary_make_empty_symbol (abfd)
- bfd *abfd;
-{
- return (asymbol *) bfd_alloc (abfd, sizeof (asymbol));
-}
-
+#define binary_make_empty_symbol _bfd_generic_make_empty_symbol
#define binary_print_symbol _bfd_nosymbols_print_symbol
/* Get information about a symbol. */
static void
binary_get_symbol_info (ignore_abfd, symbol, ret)
- bfd *ignore_abfd;
+ bfd *ignore_abfd ATTRIBUTE_UNUSED;
asymbol *symbol;
symbol_info *ret;
{
bfd_symbol_info (symbol, ret);
}
-#define binary_bfd_is_local_label bfd_generic_is_local_label
+#define binary_bfd_is_local_label_name bfd_generic_is_local_label_name
#define binary_get_lineno _bfd_nosymbols_get_lineno
#define binary_find_nearest_line _bfd_nosymbols_find_nearest_line
#define binary_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
file_ptr offset;
bfd_size_type size;
{
+ if (size == 0)
+ return true;
+
if (! abfd->output_has_begun)
{
+ boolean found_low;
bfd_vma low;
asection *s;
- /* The lowest section VMA sets the virtual address of the start
- of the file. We use the set the file position of all the
+ /* The lowest section LMA sets the virtual address of the start
+ of the file. We use this to set the file position of all the
sections. */
- low = abfd->sections->vma;
- for (s = abfd->sections->next; s != NULL; s = s->next)
- if (s->vma < low)
- low = s->vma;
+ found_low = false;
+ low = 0;
+ for (s = abfd->sections; s != NULL; s = s->next)
+ if (((s->flags
+ & (SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_NEVER_LOAD))
+ == (SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC))
+ && (s->_raw_size > 0)
+ && (! found_low || s->lma < low))
+ {
+ low = s->lma;
+ found_low = true;
+ }
for (s = abfd->sections; s != NULL; s = s->next)
- s->filepos = s->vma - low;
+ {
+ s->filepos = s->lma - low;
+
+ /* Skip following warning check for sections that will not
+ occupy file space. */
+ if ((s->flags
+ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_NEVER_LOAD))
+ != (SEC_HAS_CONTENTS | SEC_ALLOC)
+ || (s->_raw_size == 0))
+ continue;
+
+ /* If attempting to generate a binary file from a bfd with
+ LMA's all over the place, huge (sparse?) binary files may
+ result. This condition attempts to detect this situation
+ and print a warning. Better heuristics would be nice to
+ have. */
+
+ if (s->filepos < 0)
+ (*_bfd_error_handler)
+ (_("Warning: Writing section `%s' to huge (ie negative) file offset 0x%lx."),
+ bfd_get_section_name (abfd, s),
+ (unsigned long) s->filepos);
+ }
abfd->output_has_begun = true;
}
+ /* We don't want to output anything for a section that is neither
+ loaded nor allocated. The contents of such a section are not
+ meaningful in the binary format. */
+ if ((sec->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
+ return true;
+ if ((sec->flags & SEC_NEVER_LOAD) != 0)
+ return true;
+
return _bfd_generic_set_section_contents (abfd, sec, data, offset, size);
}
static int
binary_sizeof_headers (abfd, exec)
- bfd *abfd;
- boolean exec;
+ bfd *abfd ATTRIBUTE_UNUSED;
+ boolean exec ATTRIBUTE_UNUSED;
{
return 0;
}
#define binary_bfd_get_relocated_section_contents \
bfd_generic_get_relocated_section_contents
#define binary_bfd_relax_section bfd_generic_relax_section
+#define binary_bfd_gc_sections bfd_generic_gc_sections
+#define binary_bfd_merge_sections bfd_generic_merge_sections
#define binary_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
+#define binary_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
#define binary_bfd_link_add_symbols _bfd_generic_link_add_symbols
#define binary_bfd_final_link _bfd_generic_final_link
#define binary_bfd_link_split_section _bfd_generic_link_split_section
{
"binary", /* name */
bfd_target_unknown_flavour, /* flavour */
- true, /* byteorder_big_p */
- true, /* header_byteorder_big_p */
+ BFD_ENDIAN_UNKNOWN, /* byteorder */
+ BFD_ENDIAN_UNKNOWN, /* header_byteorder */
EXEC_P, /* object_flags */
(SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA
| SEC_ROM | SEC_HAS_CONTENTS), /* section_flags */
BFD_JUMP_TABLE_LINK (binary),
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+ NULL,
+
NULL
};
projects / deliverable / binutils-gdb.git / blobdiff