683 lines
23 KiB
C
683 lines
23 KiB
C
/* BFD back-end data structures for a.out (and similar) files.
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Copyright (C) 1990-2022 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef LIBAOUT_H
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#define LIBAOUT_H
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/* We try to encapsulate the differences in the various a.out file
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variants in a few routines, and otherwise share large masses of code.
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This means we only have to fix bugs in one place, most of the time. */
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#include "bfdlink.h"
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/* Macros for accessing components in an aout header. */
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#define H_PUT_64 bfd_h_put_64
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#define H_PUT_32 bfd_h_put_32
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#define H_PUT_16 bfd_h_put_16
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#define H_PUT_8 bfd_h_put_8
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#define H_PUT_S64 bfd_h_put_signed_64
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#define H_PUT_S32 bfd_h_put_signed_32
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#define H_PUT_S16 bfd_h_put_signed_16
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#define H_PUT_S8 bfd_h_put_signed_8
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#define H_GET_64 bfd_h_get_64
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#define H_GET_32 bfd_h_get_32
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#define H_GET_16 bfd_h_get_16
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#define H_GET_8 bfd_h_get_8
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#define H_GET_S64 bfd_h_get_signed_64
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#define H_GET_S32 bfd_h_get_signed_32
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#define H_GET_S16 bfd_h_get_signed_16
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#define H_GET_S8 bfd_h_get_signed_8
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/* Parameterize the a.out code based on whether it is being built
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for a 32-bit architecture or a 64-bit architecture. */
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/* Do not "beautify" the CONCAT* macro args. Traditional C will not
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remove whitespace added here, and thus will fail to concatenate
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the tokens. */
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#if ARCH_SIZE==64
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#define GET_WORD H_GET_64
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#define GET_SWORD H_GET_S64
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#define GET_MAGIC H_GET_32
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#define PUT_WORD H_PUT_64
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#define PUT_MAGIC H_PUT_32
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#ifndef NAME
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#define NAME(x,y) CONCAT3 (x,_64_,y)
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#endif
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#define JNAME(x) CONCAT2 (x,_64)
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#define BYTES_IN_WORD 8
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#else
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#if ARCH_SIZE==16
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#define GET_WORD H_GET_16
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#define GET_SWORD H_GET_S16
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#define GET_MAGIC H_GET_16
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#define PUT_WORD H_PUT_16
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#define PUT_MAGIC H_PUT_16
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#ifndef NAME
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#define NAME(x,y) CONCAT3 (x,_16_,y)
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#endif
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#define JNAME(x) CONCAT2 (x,_16)
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#define BYTES_IN_WORD 2
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#else /* ARCH_SIZE == 32 */
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#define GET_WORD H_GET_32
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#define GET_SWORD H_GET_S32
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#define GET_MAGIC H_GET_32
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#define PUT_WORD H_PUT_32
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#define PUT_MAGIC H_PUT_32
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#ifndef NAME
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#define NAME(x,y) CONCAT3 (x,_32_,y)
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#endif
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#define JNAME(x) CONCAT2 (x,_32)
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#define BYTES_IN_WORD 4
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#endif /* ARCH_SIZE==32 */
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#endif /* ARCH_SIZE==64 */
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/* Declare at file level, since used in parameter lists, which have
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weird scope. */
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struct external_exec;
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struct external_nlist;
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struct reloc_ext_external;
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struct reloc_std_external;
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/* a.out backend linker hash table entries. */
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struct aout_link_hash_entry
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{
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struct bfd_link_hash_entry root;
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/* Whether this symbol has been written out. */
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bool written;
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/* Symbol index in output file. */
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int indx;
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};
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/* a.out backend linker hash table. */
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struct aout_link_hash_table
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{
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struct bfd_link_hash_table root;
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};
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/* Look up an entry in an a.out link hash table. */
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#define aout_link_hash_lookup(table, string, create, copy, follow) \
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((struct aout_link_hash_entry *) \
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bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
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/* Traverse an a.out link hash table. */
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#define aout_link_hash_traverse(table, func, info) \
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(bfd_link_hash_traverse \
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(&(table)->root, \
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(bool (*) (struct bfd_link_hash_entry *, void *)) (func), \
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(info)))
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/* Get the a.out link hash table from the info structure. This is
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just a cast. */
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#define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
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/* Back-end information for various a.out targets. */
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struct aout_backend_data
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{
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/* Are ZMAGIC files mapped contiguously? If so, the text section may
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need more padding, if the segment size (granularity for memory access
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control) is larger than the page size. */
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unsigned char zmagic_mapped_contiguous;
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/* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
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text section, which starts immediately after the file header.
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If not, the text section starts on the next page. */
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unsigned char text_includes_header;
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/* If this flag is set, then if the entry address is not in the
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first SEGMENT_SIZE bytes of the text section, it is taken to be
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the address of the start of the text section. This can be useful
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for kernels. */
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unsigned char entry_is_text_address;
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/* The value to pass to N_SET_FLAGS. */
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unsigned char exec_hdr_flags;
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/* If the text section VMA isn't specified, and we need an absolute
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address, use this as the default. If we're producing a relocatable
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file, zero is always used. */
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/* ?? Perhaps a callback would be a better choice? Will this do anything
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reasonable for a format that handles multiple CPUs with different
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load addresses for each? */
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bfd_vma default_text_vma;
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/* Callback for setting the page and segment sizes, if they can't be
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trivially determined from the architecture. */
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bool (*set_sizes) (bfd *);
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/* zmagic files only. For go32, the length of the exec header contributes
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to the size of the text section in the file for alignment purposes but
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does *not* get counted in the length of the text section. */
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unsigned char exec_header_not_counted;
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/* Callback from the add symbols phase of the linker code to handle
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a dynamic object. */
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bool (*add_dynamic_symbols)
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(bfd *, struct bfd_link_info *, struct external_nlist **,
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bfd_size_type *, char **);
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/* Callback from the add symbols phase of the linker code to handle
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adding a single symbol to the global linker hash table. */
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bool (*add_one_symbol)
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(struct bfd_link_info *, bfd *, const char *, flagword,
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asection *, bfd_vma, const char *, bool, bool,
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struct bfd_link_hash_entry **);
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/* Called to handle linking a dynamic object. */
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bool (*link_dynamic_object)
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(struct bfd_link_info *, bfd *);
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/* Called for each global symbol being written out by the linker.
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This should write out the dynamic symbol information. */
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bool (*write_dynamic_symbol)
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(bfd *, struct bfd_link_info *, struct aout_link_hash_entry *);
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/* If this callback is not NULL, the linker calls it for each reloc.
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RELOC is a pointer to the unswapped reloc. If *SKIP is set to
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TRUE, the reloc will be skipped. *RELOCATION may be changed to
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change the effects of the relocation. */
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bool (*check_dynamic_reloc)
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(struct bfd_link_info *info, bfd *input_bfd,
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asection *input_section, struct aout_link_hash_entry *h,
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void * reloc, bfd_byte *contents, bool *skip,
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bfd_vma *relocation);
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/* Called at the end of a link to finish up any dynamic linking
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information. */
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bool (*finish_dynamic_link) (bfd *, struct bfd_link_info *);
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};
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#define aout_backend_info(abfd) \
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((const struct aout_backend_data *)((abfd)->xvec->backend_data))
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/* This is the layout in memory of a "struct exec" while we process it.
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All 'lengths' are given as a number of bytes.
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All 'alignments' are for relinkable files only; an alignment of
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'n' indicates the corresponding segment must begin at an
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address that is a multiple of (2**n). */
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struct internal_exec
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{
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long a_info; /* Magic number and flags, packed. */
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bfd_vma a_text; /* Length of text, in bytes. */
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bfd_vma a_data; /* Length of data, in bytes. */
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bfd_vma a_bss; /* Length of uninitialized data area in mem. */
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bfd_vma a_syms; /* Length of symbol table data in file. */
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bfd_vma a_entry; /* Start address. */
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bfd_vma a_trsize; /* Length of text's relocation info, in bytes. */
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bfd_vma a_drsize; /* Length of data's relocation info, in bytes. */
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/* Added for i960 */
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bfd_vma a_tload; /* Text runtime load address. */
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bfd_vma a_dload; /* Data runtime load address. */
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unsigned char a_talign; /* Alignment of text segment. */
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unsigned char a_dalign; /* Alignment of data segment. */
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unsigned char a_balign; /* Alignment of bss segment. */
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char a_relaxable; /* Enough info for linker relax. */
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};
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/* Magic number is written
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< MSB >
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3130292827262524232221201918171615141312111009080706050403020100
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< FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
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/* Magic number for NetBSD is
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<MSB >
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3130292827262524232221201918171615141312111009080706050403020100
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< FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */
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enum machine_type
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{
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M_UNKNOWN = 0,
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M_68010 = 1,
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M_68020 = 2,
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M_SPARC = 3,
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/* Skip a bunch so we don't run into any of SUN's numbers. */
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/* Make these up for the ns32k. */
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M_NS32032 = (64), /* NS32032 running ? */
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M_NS32532 = (64 + 5), /* NS32532 running mach. */
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M_386 = 100,
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M_29K = 101, /* AMD 29000. */
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M_386_DYNIX = 102, /* Sequent running dynix. */
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M_ARM = 103, /* Advanced Risc Machines ARM. */
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M_SPARCLET = 131, /* SPARClet = M_SPARC + 128. */
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M_386_NETBSD = 134, /* NetBSD/i386 binary. */
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M_68K_NETBSD = 135, /* NetBSD/m68k binary. */
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M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary. */
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M_532_NETBSD = 137, /* NetBSD/ns32k binary. */
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M_SPARC_NETBSD = 138, /* NetBSD/sparc binary. */
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M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary. */
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M_VAX_NETBSD = 140, /* NetBSD/vax binary. */
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M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary. */
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M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary. */
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M_SPARCLET_1 = 147, /* 0x93, reserved. */
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M_POWERPC_NETBSD = 149, /* NetBSD/powerpc (big-endian) binary. */
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M_VAX4K_NETBSD = 150, /* NetBSD/vax 4K pages binary. */
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M_MIPS1 = 151, /* MIPS R2000/R3000 binary. */
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M_MIPS2 = 152, /* MIPS R4000/R6000 binary. */
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M_88K_OPENBSD = 153, /* OpenBSD/m88k binary. */
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M_HPPA_OPENBSD = 154, /* OpenBSD/hppa binary. */
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M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary. */
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M_X86_64_NETBSD = 157, /* NetBSD/amd64 binary. */
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M_SPARCLET_2 = 163, /* 0xa3, reserved. */
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M_SPARCLET_3 = 179, /* 0xb3, reserved. */
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M_SPARCLET_4 = 195, /* 0xc3, reserved. */
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M_HP200 = 200, /* HP 200 (68010) BSD binary. */
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M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary. */
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M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary. */
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M_SPARCLET_5 = 211, /* 0xd3, reserved. */
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M_SPARCLET_6 = 227, /* 0xe3, reserved. */
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/*M_SPARCLET_7 = 243 / * 0xf3, reserved. */
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M_SPARCLITE_LE = 243,
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M_CRIS = 255 /* Axis CRIS binary. */
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};
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#define N_DYNAMIC(execp) ((execp)->a_info & 0x80000000)
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#ifndef N_MAGIC
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# define N_MAGIC(execp) ((execp)->a_info & 0xffff)
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#endif
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#ifndef N_MACHTYPE
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# define N_MACHTYPE(execp) ((enum machine_type)(((execp)->a_info >> 16) & 0xff))
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#endif
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#ifndef N_FLAGS
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# define N_FLAGS(execp) (((execp)->a_info >> 24) & 0xff)
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#endif
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#ifndef N_SET_INFO
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# define N_SET_INFO(execp, magic, type, flags) \
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((execp)->a_info = ((magic) & 0xffff) \
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| (((int)(type) & 0xff) << 16) \
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| (((flags) & 0xffu) << 24))
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#endif
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#ifndef N_SET_DYNAMIC
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# define N_SET_DYNAMIC(execp, dynamic) \
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((execp)->a_info = (dynamic) ? (long) ((execp)->a_info | 0x80000000) : \
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((execp)->a_info & 0x7fffffff))
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#endif
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#ifndef N_SET_MAGIC
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# define N_SET_MAGIC(execp, magic) \
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((execp)->a_info = (((execp)->a_info & 0xffff0000) | ((magic) & 0xffff)))
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#endif
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#ifndef N_SET_MACHTYPE
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# define N_SET_MACHTYPE(execp, machtype) \
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((execp)->a_info = \
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((execp)->a_info & 0xff00ffff) | ((((int) (machtype)) &0xff) << 16))
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#endif
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#ifndef N_SET_FLAGS
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# define N_SET_FLAGS(execp, flags) \
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((execp)->a_info = \
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((execp)->a_info & 0x00ffffff) | (((flags) & 0xffu) << 24))
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#endif
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typedef struct aout_symbol
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{
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asymbol symbol;
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short desc;
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char other;
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unsigned char type;
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} aout_symbol_type;
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/* The `tdata' struct for all a.out-like object file formats.
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Various things depend on this struct being around any time an a.out
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file is being handled. An example is dbxread.c in GDB. */
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enum aout_subformat {
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default_format = 0,
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/* Used on HP 9000/300 running HP/UX. */
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gnu_encap_format,
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/* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */
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q_magic_format
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};
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enum aout_magic {
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undecided_magic = 0,
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z_magic,
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o_magic,
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n_magic,
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i_magic
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};
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struct aoutdata
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{
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struct internal_exec *hdr; /* Exec file header. */
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aout_symbol_type *symbols; /* Symtab for input bfd. */
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/* For ease, we do this. */
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asection *textsec;
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asection *datasec;
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asection *bsssec;
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/* We remember these offsets so that after check_file_format, we have
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no dependencies on the particular format of the exec_hdr. */
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file_ptr sym_filepos;
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file_ptr str_filepos;
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/* Size of a relocation entry in external form. */
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unsigned reloc_entry_size;
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/* Size of a symbol table entry in external form. */
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unsigned symbol_entry_size;
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/* Page size - needed for alignment of demand paged files. */
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unsigned long page_size;
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/* Segment size - needed for alignment of demand paged files. */
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unsigned long segment_size;
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/* Zmagic disk block size - need to align the start of the text
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section in ZMAGIC binaries. Normally the same as page_size. */
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unsigned long zmagic_disk_block_size;
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unsigned exec_bytes_size;
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unsigned vma_adjusted : 1;
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/* Used when a bfd supports several highly similar formats. */
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enum aout_subformat subformat;
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enum aout_magic magic;
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/* A buffer for find_nearest_line. */
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char *line_buf;
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/* The external symbol information. */
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struct external_nlist *external_syms;
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bfd_size_type external_sym_count;
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bfd_window sym_window;
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char *external_strings;
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bfd_size_type external_string_size;
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bfd_window string_window;
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struct aout_link_hash_entry **sym_hashes;
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/* A pointer for shared library information. */
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void * dynamic_info;
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/* A mapping from local symbols to offsets into the global offset
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table, used when linking on SunOS. This is indexed by the symbol
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index. */
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bfd_vma *local_got_offsets;
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};
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struct aout_data_struct
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{
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struct aoutdata a;
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struct internal_exec e;
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};
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#define adata(bfd) ((bfd)->tdata.aout_data->a)
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#define exec_hdr(bfd) (adata (bfd).hdr)
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#define obj_aout_symbols(bfd) (adata (bfd).symbols)
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#define obj_textsec(bfd) (adata (bfd).textsec)
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#define obj_datasec(bfd) (adata (bfd).datasec)
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#define obj_bsssec(bfd) (adata (bfd).bsssec)
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#define obj_sym_filepos(bfd) (adata (bfd).sym_filepos)
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#define obj_str_filepos(bfd) (adata (bfd).str_filepos)
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#define obj_reloc_entry_size(bfd) (adata (bfd).reloc_entry_size)
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#define obj_symbol_entry_size(bfd) (adata (bfd).symbol_entry_size)
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#define obj_aout_subformat(bfd) (adata (bfd).subformat)
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#define obj_aout_external_syms(bfd) (adata (bfd).external_syms)
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#define obj_aout_external_sym_count(bfd) (adata (bfd).external_sym_count)
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#define obj_aout_sym_window(bfd) (adata (bfd).sym_window)
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#define obj_aout_external_strings(bfd) (adata (bfd).external_strings)
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#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. */
|
||
void * 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 = (void *)&(v)->relocs)
|
||
|
||
/* Prototype declarations for functions defined in aoutx.h. */
|
||
|
||
extern bool NAME (aout, squirt_out_relocs)
|
||
(bfd *, asection *);
|
||
|
||
extern bool NAME (aout, make_sections)
|
||
(bfd *);
|
||
|
||
extern bfd_cleanup NAME (aout, some_aout_object_p)
|
||
(bfd *, struct internal_exec *, bfd_cleanup (*) (bfd *));
|
||
|
||
extern bool NAME (aout, mkobject)
|
||
(bfd *);
|
||
|
||
extern enum machine_type NAME (aout, machine_type)
|
||
(enum bfd_architecture, unsigned long, bool *);
|
||
|
||
extern bool NAME (aout, set_arch_mach)
|
||
(bfd *, enum bfd_architecture, unsigned long);
|
||
|
||
extern bool NAME (aout, new_section_hook)
|
||
(bfd *, asection *);
|
||
|
||
extern bool NAME (aout, set_section_contents)
|
||
(bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
|
||
|
||
extern asymbol * NAME (aout, make_empty_symbol)
|
||
(bfd *);
|
||
|
||
extern bool NAME (aout, translate_symbol_table)
|
||
(bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
|
||
char *, bfd_size_type, bool);
|
||
|
||
extern bool NAME (aout, slurp_symbol_table)
|
||
(bfd *);
|
||
|
||
extern bool NAME (aout, write_syms)
|
||
(bfd *);
|
||
|
||
extern void NAME (aout, reclaim_symbol_table)
|
||
(bfd *);
|
||
|
||
extern long NAME (aout, get_symtab_upper_bound)
|
||
(bfd *);
|
||
|
||
extern long NAME (aout, canonicalize_symtab)
|
||
(bfd *, asymbol **);
|
||
|
||
extern void NAME (aout, swap_ext_reloc_in)
|
||
(bfd *, struct reloc_ext_external *, arelent *, asymbol **,
|
||
bfd_size_type);
|
||
|
||
extern void NAME (aout, swap_std_reloc_in)
|
||
(bfd *, struct reloc_std_external *, arelent *, asymbol **,
|
||
bfd_size_type);
|
||
|
||
extern reloc_howto_type * NAME (aout, reloc_type_lookup)
|
||
(bfd *, bfd_reloc_code_real_type);
|
||
|
||
extern reloc_howto_type * NAME (aout, reloc_name_lookup)
|
||
(bfd *, const char *);
|
||
|
||
extern bool NAME (aout, slurp_reloc_table)
|
||
(bfd *, sec_ptr, asymbol **);
|
||
|
||
extern long NAME (aout, canonicalize_reloc)
|
||
(bfd *, sec_ptr, arelent **, asymbol **);
|
||
|
||
extern long NAME (aout, get_reloc_upper_bound)
|
||
(bfd *, sec_ptr);
|
||
|
||
extern void NAME (aout, reclaim_reloc)
|
||
(bfd *, sec_ptr);
|
||
|
||
extern alent * NAME (aout, get_lineno)
|
||
(bfd *, asymbol *);
|
||
|
||
extern void NAME (aout, print_symbol)
|
||
(bfd *, void *, asymbol *, bfd_print_symbol_type);
|
||
|
||
extern void NAME (aout, get_symbol_info)
|
||
(bfd *, asymbol *, symbol_info *);
|
||
|
||
extern bool NAME (aout, find_nearest_line)
|
||
(bfd *, asymbol **, asection *, bfd_vma,
|
||
const char **, const char **, unsigned int *, unsigned int *);
|
||
|
||
extern long NAME (aout, read_minisymbols)
|
||
(bfd *, bool, void * *, unsigned int *);
|
||
|
||
extern asymbol * NAME (aout, minisymbol_to_symbol)
|
||
(bfd *, bool, const void *, asymbol *);
|
||
|
||
extern int NAME (aout, sizeof_headers)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bool NAME (aout, adjust_sizes_and_vmas)
|
||
(bfd *);
|
||
|
||
extern void NAME (aout, swap_exec_header_in)
|
||
(bfd *, struct external_exec *, struct internal_exec *);
|
||
|
||
extern void NAME (aout, swap_exec_header_out)
|
||
(bfd *, struct internal_exec *, struct external_exec *);
|
||
|
||
extern struct bfd_hash_entry * NAME (aout, link_hash_newfunc)
|
||
(struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
|
||
|
||
extern bool NAME (aout, link_hash_table_init)
|
||
(struct aout_link_hash_table *, bfd *,
|
||
struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
|
||
struct bfd_hash_table *,
|
||
const char *),
|
||
unsigned int);
|
||
|
||
extern struct bfd_link_hash_table * NAME (aout, link_hash_table_create)
|
||
(bfd *);
|
||
|
||
extern bool NAME (aout, link_add_symbols)
|
||
(bfd *, struct bfd_link_info *);
|
||
|
||
extern bool NAME (aout, final_link)
|
||
(bfd *, struct bfd_link_info *,
|
||
void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *));
|
||
|
||
extern bool NAME (aout, bfd_free_cached_info)
|
||
(bfd *);
|
||
|
||
#define aout_32_find_inliner_info _bfd_nosymbols_find_inliner_info
|
||
#if 0 /* Are these needed? */
|
||
#define aout_16_find_inliner_info _bfd_nosymbols_find_inliner_info
|
||
#define aout_64_find_inliner_info _bfd_nosymbols_find_inliner_info
|
||
#endif
|
||
|
||
/* A.out uses the generic versions of these routines... */
|
||
|
||
#define aout_16_get_section_contents _bfd_generic_get_section_contents
|
||
|
||
#define aout_32_get_section_contents _bfd_generic_get_section_contents
|
||
|
||
#define aout_64_get_section_contents _bfd_generic_get_section_contents
|
||
|
||
#ifndef aout_32_bfd_is_local_label_name
|
||
#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
|
||
#endif
|
||
|
||
#ifndef aout_32_bfd_is_target_special_symbol
|
||
#define aout_32_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
|
||
#endif
|
||
|
||
#ifndef WRITE_HEADERS
|
||
#define WRITE_HEADERS(abfd, execp) \
|
||
{ \
|
||
if (adata(abfd).magic == undecided_magic) \
|
||
NAME (aout, adjust_sizes_and_vmas) (abfd); \
|
||
\
|
||
execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
|
||
execp->a_entry = bfd_get_start_address (abfd); \
|
||
\
|
||
execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
|
||
obj_reloc_entry_size (abfd)); \
|
||
execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
|
||
obj_reloc_entry_size (abfd)); \
|
||
NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \
|
||
\
|
||
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \
|
||
|| bfd_bwrite (& exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
|
||
abfd) != EXEC_BYTES_SIZE) \
|
||
return false; \
|
||
/* Now write out reloc info, followed by syms and strings. */ \
|
||
\
|
||
if (bfd_get_outsymbols (abfd) != NULL \
|
||
&& bfd_get_symcount (abfd) != 0) \
|
||
{ \
|
||
if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (execp)), SEEK_SET) != 0)\
|
||
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 (!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; \
|
||
}
|
||
#endif
|
||
|
||
/* Test if a read-only section can be merged with .text. This is
|
||
possible if:
|
||
|
||
1. Section has file contents and is read-only.
|
||
2. The VMA of the section is after the end of .text and before
|
||
the start of .data.
|
||
3. The image is demand-pageable (otherwise, a_text in the header
|
||
will not reflect the gap between .text and .data). */
|
||
|
||
#define aout_section_merge_with_text_p(abfd, sec) \
|
||
(((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) == \
|
||
(SEC_HAS_CONTENTS | SEC_READONLY) \
|
||
&& obj_textsec (abfd) != NULL \
|
||
&& obj_datasec (abfd) != NULL \
|
||
&& (sec)->vma >= (obj_textsec (abfd)->vma + \
|
||
obj_textsec (abfd)->size) \
|
||
&& ((sec)->vma + (sec)->size) <= obj_datasec (abfd)->vma \
|
||
&& ((abfd)->flags & D_PAGED) != 0)
|
||
|
||
#endif /* ! defined (LIBAOUT_H) */
|