/* BFD back-end data structures for a.out (and similar) files.
- Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#ifndef LIBAOUT_H
+#define LIBAOUT_H
/* We try to encapsulate the differences in the various a.out file
variants in a few routines, and otherwise share large masses of code.
This means we only have to fix bugs in one place, most of the time. */
+#include "bfdlink.h"
+
/* Parameterize the a.out code based on whether it is being built
for a 32-bit architecture or a 64-bit architecture. */
#if ARCH_SIZE==64
struct external_nlist;
struct reloc_ext_external;
struct reloc_std_external;
+\f
+/* a.out backend linker hash table entries. */
+
+struct aout_link_hash_entry
+{
+ struct bfd_link_hash_entry root;
+ /* Whether this symbol has been written out. */
+ boolean written;
+ /* Symbol index in output file. */
+ int indx;
+};
+
+/* a.out backend linker hash table. */
+
+struct aout_link_hash_table
+{
+ struct bfd_link_hash_table root;
+};
+
+/* Look up an entry in an a.out link hash table. */
+#define aout_link_hash_lookup(table, string, create, copy, follow) \
+ ((struct aout_link_hash_entry *) \
+ bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
+
+/* Traverse an a.out link hash table. */
+
+#define aout_link_hash_traverse(table, func, info) \
+ (bfd_link_hash_traverse \
+ (&(table)->root, \
+ (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
+ (info)))
+
+/* Get the a.out link hash table from the info structure. This is
+ just a cast. */
+
+#define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
+\f
/* Back-end information for various a.out targets. */
struct aout_backend_data
{
If not, the text section starts on the next page. */
unsigned char text_includes_header;
+ /* The value to pass to N_SET_FLAGS. */
+ unsigned char exec_hdr_flags;
+
/* If the text section VMA isn't specified, and we need an absolute
address, use this as the default. If we're producing a relocatable
file, zero is always used. */
to the size of the text section in the file for alignment purposes but
does *not* get counted in the length of the text section. */
unsigned char exec_header_not_counted;
+
+ /* Callback from the add symbols phase of the linker code to handle
+ a dynamic object. */
+ boolean (*add_dynamic_symbols) PARAMS ((bfd *, struct bfd_link_info *,
+ struct external_nlist **,
+ bfd_size_type *, char **));
+
+ /* Callback from the add symbols phase of the linker code to handle
+ adding a single symbol to the global linker hash table. */
+ boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
+ const char *, flagword, asection *,
+ bfd_vma, const char *, boolean,
+ boolean,
+ struct bfd_link_hash_entry **));
+
+ /* Called to handle linking a dynamic object. */
+ boolean (*link_dynamic_object) PARAMS ((struct bfd_link_info *, bfd *));
+
+ /* Called for each global symbol being written out by the linker.
+ This should write out the dynamic symbol information. */
+ boolean (*write_dynamic_symbol) PARAMS ((bfd *, struct bfd_link_info *,
+ struct aout_link_hash_entry *));
+
+ /* If this callback is not NULL, the linker calls it for each reloc.
+ RELOC is a pointer to the unswapped reloc. If *SKIP is set to
+ true, the reloc will be skipped. *RELOCATION may be changed to
+ change the effects of the relocation. */
+ boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *info,
+ bfd *input_bfd,
+ asection *input_section,
+ struct aout_link_hash_entry *h,
+ PTR reloc, bfd_byte *contents,
+ boolean *skip,
+ bfd_vma *relocation));
+
+ /* Called at the end of a link to finish up any dynamic linking
+ information. */
+ boolean (*finish_dynamic_link) PARAMS ((bfd *, struct bfd_link_info *));
};
#define aout_backend_info(abfd) \
((CONST struct aout_backend_data *)((abfd)->xvec->backend_data))
};
/* Magic number is written
-< MSB >
+< MSB >
3130292827262524232221201918171615141312111009080706050403020100
-< FLAGS >< MACHINE TYPE >< MAGIC NUMBER >
+< FLAGS >< MACHINE TYPE >< MAGIC NUMBER >
*/
/* Magic number for NetBSD is
-<MSB >
+<MSB >
3130292827262524232221201918171615141312111009080706050403020100
-< FLAGS >< >< MAGIC NUMBER >
+< FLAGS >< MACHINE TYPE >< MAGIC NUMBER >
*/
enum machine_type {
M_68020 = 2,
M_SPARC = 3,
/* skip a bunch so we don't run into any of suns numbers */
+ /* make these up for the ns32k*/
+ M_NS32032 = (64), /* ns32032 running ? */
+ M_NS32532 = (64 + 5), /* ns32532 running mach */
+
M_386 = 100,
M_29K = 101, /* AMD 29000 */
M_386_DYNIX = 102, /* Sequent running dynix */
- M_386_NETBSD = 134, /* NetBSD/386 binary */
+ M_ARM = 103, /* Advanced Risc Machines ARM */
+ M_SPARCLET = 131, /* SPARClet = M_SPARC + 128 */
+ M_386_NETBSD = 134, /* NetBSD/i386 binary */
+ M_68K_NETBSD = 135, /* NetBSD/m68k binary */
+ M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary */
+ M_532_NETBSD = 137, /* NetBSD/ns32k binary */
+ M_SPARC_NETBSD = 138, /* NetBSD/sparc binary */
M_MIPS1 = 151, /* MIPS R2000/R3000 binary */
M_MIPS2 = 152, /* MIPS R4000/R6000 binary */
M_HP200 = 200, /* HP 200 (68010) BSD binary */
/* Segment size - needed for alignment of demand paged files. */
unsigned long segment_size;
+ /* Zmagic disk block size - need to align the start of the text
+ section in ZMAGIC binaries. Normally the same as page_size. */
+ unsigned long zmagic_disk_block_size;
+
unsigned exec_bytes_size;
unsigned vma_adjusted : 1;
/* used when a bfd supports several highly similar formats */
- enum {
- default_format = 0,
- gnu_encap_format } subformat;
-
- enum {
- undecided_magic = 0,
- z_magic,
- o_magic,
- n_magic } magic;
+ enum
+ {
+ default_format = 0,
+ /* Used on HP 9000/300 running HP/UX. See hp300hpux.c. */
+ gnu_encap_format,
+ /* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */
+ q_magic_format
+ } subformat;
+
+ enum
+ {
+ undecided_magic = 0,
+ z_magic,
+ o_magic,
+ n_magic
+ } magic;
+
+ /* A buffer for find_nearest_line. */
+ char *line_buf;
/* The external symbol information. */
struct external_nlist *external_syms;
bfd_size_type external_sym_count;
+ bfd_window sym_window;
char *external_strings;
bfd_size_type external_string_size;
+ bfd_window string_window;
struct aout_link_hash_entry **sym_hashes;
/* A pointer for shared library information. */
PTR dynamic_info;
+
+ /* A mapping from local symbols to offsets into the global offset
+ table, used when linking on SunOS. This is indexed by the symbol
+ index. */
+ bfd_vma *local_got_offsets;
};
struct aout_data_struct {
#define obj_aout_subformat(bfd) (adata(bfd).subformat)
#define obj_aout_external_syms(bfd) (adata(bfd).external_syms)
#define obj_aout_external_sym_count(bfd) (adata(bfd).external_sym_count)
+#define obj_aout_sym_window(bfd) (adata(bfd).sym_window)
#define obj_aout_external_strings(bfd) (adata(bfd).external_strings)
#define obj_aout_external_string_size(bfd) (adata(bfd).external_string_size)
+#define obj_aout_string_window(bfd) (adata(bfd).string_window)
#define obj_aout_sym_hashes(bfd) (adata(bfd).sym_hashes)
#define obj_aout_dynamic_info(bfd) (adata(bfd).dynamic_info)
macro is only ever applied to an asymbol */
#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
+/* Information we keep for each a.out section. This is currently only
+ used by the a.out backend linker. */
+
+struct aout_section_data_struct
+{
+ /* The unswapped relocation entries for this section. */
+ PTR relocs;
+};
+
+#define aout_section_data(s) \
+ ((struct aout_section_data_struct *) (s)->used_by_bfd)
+
+#define set_aout_section_data(s,v) \
+ ((s)->used_by_bfd = (PTR)&(v)->relocs)
+
/* Prototype declarations for functions defined in aoutx.h */
boolean
NAME(aout,squirt_out_relocs) PARAMS ((bfd *abfd, asection *section));
-bfd_target *
+boolean
+NAME(aout,make_sections) PARAMS ((bfd *));
+
+const bfd_target *
NAME(aout,some_aout_object_p) PARAMS ((bfd *abfd,
- struct internal_exec *execp,
- bfd_target * (*callback)(bfd *)));
+ struct internal_exec *execp,
+ const bfd_target *(*callback)(bfd *)));
boolean
NAME(aout,mkobject) PARAMS ((bfd *abfd));
enum machine_type
NAME(aout,machine_type) PARAMS ((enum bfd_architecture arch,
- unsigned long machine));
+ unsigned long machine,
+ boolean *unknown));
boolean
NAME(aout,set_arch_mach) PARAMS ((bfd *abfd, enum bfd_architecture arch,
void
NAME(aout,swap_ext_reloc_in) PARAMS ((bfd *, struct reloc_ext_external *,
- arelent *, asymbol **));
+ arelent *, asymbol **, bfd_size_type));
void
NAME(aout,swap_std_reloc_in) PARAMS ((bfd *, struct reloc_std_external *,
- arelent *, asymbol **));
+ arelent *, asymbol **, bfd_size_type));
+
+reloc_howto_type *
+NAME(aout,reloc_type_lookup) PARAMS ((bfd *abfd,
+ bfd_reloc_code_real_type code));
boolean
NAME(aout,slurp_reloc_table) PARAMS ((bfd *abfd, sec_ptr asect,
asymbol **symbols, bfd_vma offset, CONST char **filename_ptr,
CONST char **functionname_ptr, unsigned int *line_ptr));
+long
+NAME(aout,read_minisymbols) PARAMS ((bfd *, boolean, PTR *, unsigned int *));
+
+asymbol *
+NAME(aout,minisymbol_to_symbol) PARAMS ((bfd *, boolean, const PTR,
+ asymbol *));
+
int
NAME(aout,sizeof_headers) PARAMS ((bfd *abfd, boolean exec));
NAME(aout,swap_exec_header_out) PARAMS ((bfd *abfd,
struct internal_exec *execp, struct external_exec *raw_bytes));
+struct bfd_hash_entry *
+NAME(aout,link_hash_newfunc)
+ PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
+
+boolean
+NAME(aout,link_hash_table_init)
+ PARAMS ((struct aout_link_hash_table *, bfd *,
+ struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *)));
+
struct bfd_link_hash_table *
NAME(aout,link_hash_table_create) PARAMS ((bfd *));
boolean
NAME(aout,bfd_free_cached_info) PARAMS ((bfd *));
-/* Prototypes for functions in stab-syms.c. */
-
-CONST char *
-aout_stab_name PARAMS ((int code));
-
/* A.out uses the generic versions of these routines... */
#define aout_32_get_section_contents _bfd_generic_get_section_contents
\
if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \
&& bfd_get_symcount (abfd) != 0) \
- { \
- if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET) \
- != 0) \
- return false; \
+ { \
+ if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET) != 0) \
+ return false; \
\
- if (! NAME(aout,write_syms)(abfd)) return false; \
+ if (! NAME(aout,write_syms)(abfd)) return false; \
+ } \
\
- if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET) \
- != 0) \
- return false; \
+ if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET) != 0) \
+ return false; \
+ if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) \
+ return false; \
\
- if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) \
- return false; \
- if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET) \
- != 0) \
- return false; \
- \
- if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) \
- return false; \
- } \
+ if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET) != 0) \
+ return false; \
+ if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) \
+ return false; \
}
#endif
+
+#endif /* ! defined (LIBAOUT_H) */
projects / binutils.git / blobdiff