/* 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, 96, 97, 1998
+ 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
#define BYTES_IN_WORD 4
#endif /* ARCH_SIZE==32 */
-/* Declare at file level, since it isused in parameter lists, which
- have weird scope. */
+/* Declare at file level, since used in parameter lists, which have
+ weird scope. */
struct external_exec;
+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;
+ /* If this flag is set, then if the entry address is not in the
+ first SEGMENT_SIZE bytes of the text section, it is taken to be
+ the address of the start of the text section. This can be useful
+ for kernels. */
+ unsigned char entry_is_text_address;
+
+ /* 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_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary */
+ M_VAX_NETBSD = 140, /* NetBSD/vax binary */
+ M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary */
+ M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary */
+ M_SPARCLET_1 = 147, /* 0x93, reserved */
M_MIPS1 = 151, /* MIPS R2000/R3000 binary */
M_MIPS2 = 152, /* MIPS R4000/R6000 binary */
+ M_SPARCLET_2 = 163, /* 0xa3, reserved */
+ M_SPARCLET_3 = 179, /* 0xb3, reserved */
+ M_SPARCLET_4 = 195, /* 0xc3, reserved */
M_HP200 = 200, /* HP 200 (68010) BSD binary */
M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary */
- M_HPUX = (0x20c % 256)/* HP 200/300 HPUX binary */
+ M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary */
+ M_SPARCLET_5 = 211, /* 0xd3, reserved */
+ M_SPARCLET_6 = 227, /* 0xe3, reserved */
+ /* M_SPARCLET_7 = 243 / * 0xf3, reserved */
+ M_SPARCLITE_LE = 243
};
-#define N_DYNAMIC(exec) ((exec).a_info & 0x8000000)
+#define N_DYNAMIC(exec) ((exec).a_info & 0x80000000)
#ifndef N_MAGIC
# define N_MAGIC(exec) ((exec).a_info & 0xffff)
| (((flags) & 0xff) << 24))
#endif
+#ifndef N_SET_DYNAMIC
+# define N_SET_DYNAMIC(exec, dynamic) \
+((exec).a_info = (dynamic) ? ((exec).a_info | 0x80000000) : \
+((exec).a_info & 0x7fffffff))
+#endif
+
#ifndef N_SET_MAGIC
# define N_SET_MAGIC(exec, magic) \
((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
/* 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)
/* We take the address of the first element of an asymbol to ensure that the
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,
asymbol *
NAME(aout,make_empty_symbol) PARAMS ((bfd *abfd));
+boolean
+NAME(aout,translate_symbol_table) PARAMS ((bfd *, aout_symbol_type *,
+ struct external_nlist *,
+ bfd_size_type, char *,
+ bfd_size_type,
+ boolean dynamic));
+
boolean
NAME(aout,slurp_symbol_table) PARAMS ((bfd *abfd));
void
NAME(aout,reclaim_symbol_table) PARAMS ((bfd *abfd));
-unsigned int
+long
NAME(aout,get_symtab_upper_bound) PARAMS ((bfd *abfd));
-unsigned int
+long
NAME(aout,get_symtab) PARAMS ((bfd *abfd, asymbol **location));
+void
+NAME(aout,swap_ext_reloc_in) PARAMS ((bfd *, struct reloc_ext_external *,
+ arelent *, asymbol **, bfd_size_type));
+void
+NAME(aout,swap_std_reloc_in) PARAMS ((bfd *, struct reloc_std_external *,
+ 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));
-unsigned int
+long
NAME(aout,canonicalize_reloc) PARAMS ((bfd *abfd, sec_ptr section,
arelent **relptr, asymbol **symbols));
-unsigned int
+long
NAME(aout,get_reloc_upper_bound) PARAMS ((bfd *abfd, sec_ptr asect));
void
NAME(aout,get_symbol_info) PARAMS ((bfd *ignore_abfd,
asymbol *symbol, symbol_info *ret));
-boolean
-NAME(aout,close_and_cleanup) PARAMS ((bfd *abfd));
-
boolean
NAME(aout,find_nearest_line) PARAMS ((bfd *abfd, asection *section,
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 *));
void (*) (bfd *, file_ptr *, file_ptr *,
file_ptr *)));
-/* Prototypes for functions in stab-syms.c. */
-
-CONST char *
-aout_stab_name PARAMS ((int code));
+boolean
+NAME(aout,bfd_free_cached_info) PARAMS ((bfd *));
/* A.out uses the generic versions of these routines... */
-#define aout_32_get_section_contents bfd_generic_get_section_contents
-#define aout_32_close_and_cleanup bfd_generic_close_and_cleanup
+#define aout_32_get_section_contents _bfd_generic_get_section_contents
-#define aout_64_get_section_contents bfd_generic_get_section_contents
-#define aout_64_close_and_cleanup bfd_generic_close_and_cleanup
+#define aout_64_get_section_contents _bfd_generic_get_section_contents
#ifndef NO_WRITE_HEADER_KLUDGE
#define NO_WRITE_HEADER_KLUDGE 0
#endif
+#ifndef aout_32_bfd_is_local_label_name
+#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
+#endif
+
#ifndef WRITE_HEADERS
#define WRITE_HEADERS(abfd, execp) \
{ \
obj_reloc_entry_size (abfd)); \
NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \
\
- bfd_seek (abfd, (file_ptr) 0, SEEK_SET); \
- bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); \
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) return false; \
+ if (bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) \
+ != EXEC_BYTES_SIZE) \
+ return false; \
/* Now write out reloc info, followed by syms and strings */ \
\
if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \
&& bfd_get_symcount (abfd) != 0) \
- { \
- bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET); \
- \
- if (! NAME(aout,write_syms)(abfd)) return false; \
+ { \
+ if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET) != 0) \
+ return false; \
\
- bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET); \
+ if (! NAME(aout,write_syms)(abfd)) return false; \
+ } \
\
- if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \
- bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET); \
+ 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_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) */
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