along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#define PAGE_SIZE 4096
-#define SEGMENT_SIZE PAGE_SIZE
-#define TEXT_START_ADDR 0x8000
-#define ARCH 32
-#define BYTES_IN_WORD 4
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "libbfd.h"
-#include "aout64.h"
-#include "stab.gnu.h"
-#include "ar.h"
-#include "libaout.h" /* BFD a.out internal data structures */
-
-bfd_target *aout386_callback ();
-
-bfd_target *
-DEFUN(aout386_object_p,(abfd),
- bfd *abfd)
-{
- struct external_exec exec_bytes;
- struct internal_exec exec;
-
- if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
- != EXEC_BYTES_SIZE) {
- bfd_error = wrong_format;
- return 0;
- }
-
- exec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
-
- if (N_BADMAG (exec)) return 0;
-
- NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
- return aout_32_some_aout_object_p (abfd, &exec, aout386_callback);
-}
-/* Finish up the reading of the file header */
-bfd_target *
-DEFUN(aout386_callback,(abfd),
- bfd *abfd)
-{
- struct internal_exec *execp = exec_hdr (abfd);
-
- WORK_OUT_FILE_POSITIONS(abfd, execp) ;
-
- /* Determine the architecture and machine type of the object file. */
- bfd_default_set_arch_mach(abfd, bfd_arch_i386, 0);
+/* The only 386 aout system we have here is GO32 from DJ.
+ These numbers make BFD work with that. If your aout 386 system
+ doesn't work with these, we'll have to split them into different
+ files. Send me (sac@cygnus.com) the runes to make it work on your
+ system, and I'll stick it in for the next release.
- return abfd->xvec;
-}
-
-/* Write an object file.
- Section contents have already been written. We write the
- file header, symbols, and relocation. */
-
-boolean
-DEFUN(aout386_write_object_contents,(abfd),
- bfd *abfd)
-{
- bfd_size_type data_pad = 0;
- struct external_exec exec_bytes;
- struct internal_exec *execp = exec_hdr (abfd);
-
- WRITE_HEADERS(abfd, execp);
- return true;
-}
-\f
-/* Transfer vector */
-
-/* We use BSD archive files. */
-#define aout386_openr_next_archived_file bfd_generic_openr_next_archived_file
-#define aout386_generic_stat_arch_elt bfd_generic_stat_arch_elt
-#define aout386_slurp_armap bfd_slurp_bsd_armap
-#define aout386_slurp_extended_name_table bfd_true
-#define aout386_write_armap bsd_write_armap
-#define aout386_truncate_arname bfd_bsd_truncate_arname
-
-/* We don't support core files here. */
-#define aout386_core_file_failing_command _bfd_dummy_core_file_failing_command
-#define aout386_core_file_failing_signal _bfd_dummy_core_file_failing_signal
-#define aout386_core_file_matches_executable_p \
- _bfd_dummy_core_file_matches_executable_p
-#define aout386_core_file_p _bfd_dummy_target
+ */
+#define TARGET_IS_LITTLE_ENDIAN_P
+#define N_HEADER_IN_TEXT(x) 0
+#define BYTES_IN_WORD 4
+#define ARCH 32
-#define aout386_bfd_debug_info_start bfd_void
-#define aout386_bfd_debug_info_end bfd_void
-#define aout386_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
+#define N_TXTOFF(x) 0x20
+#define N_TXTADDR(x) (N_MAGIC(x)==ZMAGIC ? 0x1020 : 0)
-#define aout386_mkobject aout_32_mkobject
-#define aout386_close_and_cleanup aout_32_close_and_cleanup
-#define aout386_set_section_contents aout_32_set_section_contents
-#define aout386_get_section_contents aout_32_get_section_contents
-#define aout386_new_section_hook aout_32_new_section_hook
-#define aout386_get_symtab_upper_bound aout_32_get_symtab_upper_bound
-#define aout386_get_symtab aout_32_get_symtab
-#define aout386_get_reloc_upper_bound aout_32_get_reloc_upper_bound
-#define aout386_canonicalize_reloc aout_32_canonicalize_reloc
-#define aout386_make_empty_symbol aout_32_make_empty_symbol
-#define aout386_print_symbol aout_32_print_symbol
-#define aout386_get_lineno aout_32_get_lineno
-#define aout386_set_arch_mach aout_32_set_arch_mach
-#define aout386_find_nearest_line aout_32_find_nearest_line
-#define aout386_sizeof_headers aout_32_sizeof_headers
+#define N_TXTSIZE(x) ((x).a_text)
+#if 0
+#define N_DATADDR(x) (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) : (SEGMENT_SIZE + ((0x1020+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
+#define NOSUBEXECB
-bfd_target i386aout_vec = /* Intel 386 running a.out, embedded. */
-{
- "a.out-i386", /* name */
- bfd_target_aout_flavour,
- false, /* target byte order */
- false, /* target headers byte order */
- (HAS_RELOC | EXEC_P | /* object flags */
- HAS_LINENO | HAS_DEBUG |
- HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
- ' ', /* ar_pad_char */
- 16, /* ar_max_namelen */
- 1, /* minimum alignment */
- /* data swap routines */
- _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
- /* header swap routines */
- _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
+#endif
+#define PAGE_SIZE 4096
+#define SEGMENT_SIZE 0x400000
+#define DEFAULT_ARCH bfd_arch_i386
- {_bfd_dummy_target, aout386_object_p, /* bfd_check_format */
- bfd_generic_archive_p, aout386_core_file_p},
- {bfd_false, aout386_mkobject, /* bfd_set_format */
- _bfd_generic_mkarchive, bfd_false},
- {bfd_false, aout386_write_object_contents, /* bfd_write_contents */
- _bfd_write_archive_contents, bfd_false},
+#define MY(OP) CAT(i386aout_,OP)
+#define TARGETNAME "a.out-i386"
+#define NO_WRITE_HEADER_KLUDGE 1
- JUMP_TABLE(aout386)
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "libaout.h"
+static boolean MY(set_sizes)();
+#define MY_backend_data &MY(backend_data)
+static CONST struct aout_backend_data MY(backend_data) = {
+ 0, /* zmagic contiguous */
+ 1, /* text incl header */
+ 0, /* text vma? */
+ MY(set_sizes),
+ 1, /* exec header not counted */
};
+
+#include "aout-target.h"
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. */
-/* $Id$ */
-
#ifdef __STDC__
#define CAT3(a,b,c) a##b##c
#else
/* Are ZMAGIC files mapped contiguously? If so, the text section may
need more padding, if the segment size (granularity for memory access
control) is larger than the page size. */
- unsigned char zmagic_mapped_contiguous : 1;
+ unsigned char zmagic_mapped_contiguous;
/* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
text section, which starts immediately after the file header.
If not, the text section starts on the next page. */
- unsigned char text_includes_header : 1;
+ unsigned char text_includes_header;
/* 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
reasonable for a format that handles multiple CPUs with different
load addresses for each? */
bfd_vma default_text_vma;
+
+ /* Callback for setting the page and segment sizes, if they can't be
+ trivially determined from the architecture. */
+ boolean (*set_sizes) PARAMS ((bfd *));
+
+ /* zmagic files only. For go32, the length of the exec header contributes
+ 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;
};
#define aout_backend_info(abfd) \
((CONST struct aout_backend_data *)((abfd)->xvec->backend_data))
unsigned char a_talign; /* Alignment of text segment */
unsigned char a_dalign; /* Alignment of data segment */
unsigned char a_balign; /* Alignment of bss segment */
+ char a_relaxable; /* Enough info for linker relax */
};
/* Magic number is written
projects / external / binutils.git / commitdiff