mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:54:41 +08:00
115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/* BFD back-end definitions used by all NetBSD targets.
|
|
Copyright (C) 1990-2020 Free Software Foundation, Inc.
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
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., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
|
|
/* Check for our machine type (part of magic number). */
|
|
#ifndef MACHTYPE_OK
|
|
#define MACHTYPE_OK(m) ((m) == DEFAULT_MID || (m) == M_UNKNOWN)
|
|
#endif
|
|
|
|
/* This is the normal load address for executables. */
|
|
#define TEXT_START_ADDR TARGET_PAGE_SIZE
|
|
|
|
/* NetBSD ZMAGIC has its header in the text segment. */
|
|
#define N_HEADER_IN_TEXT(x) 1
|
|
|
|
/* Determine if this is a shared library using the flags. */
|
|
#define N_SHARED_LIB(x) (N_DYNAMIC (x))
|
|
|
|
/* We have 6 bits of flags and 10 bits of machine ID. */
|
|
#define N_MACHTYPE(execp) \
|
|
((enum machine_type) (((execp)->a_info >> 16) & 0x03ff))
|
|
#define N_FLAGS(execp) \
|
|
(((execp)->a_info >> 26) & 0x3f)
|
|
|
|
#define N_SET_INFO(execp, magic, type, flags) \
|
|
((execp)->a_info = ((magic) & 0xffff) \
|
|
| (((int) (type) & 0x3ff) << 16) \
|
|
| (((flags) & 0x3f) << 24))
|
|
#define N_SET_MACHTYPE(execp, machtype) \
|
|
((execp)->a_info = \
|
|
((execp)->a_info & 0xfb00ffff) | ((((int) (machtype)) & 0x3ff) << 16))
|
|
#define N_SET_FLAGS(execp, flags) \
|
|
((execp)->a_info = \
|
|
((execp)->a_info & 0x03ffffff) | ((flags & 0x3fu) << 26))
|
|
|
|
#include "sysdep.h"
|
|
#include "bfd.h"
|
|
#include "libbfd.h"
|
|
#include "libaout.h"
|
|
|
|
/* On NetBSD, the magic number is always in ntohl's "network" (big-endian)
|
|
format. */
|
|
#define SWAP_MAGIC(ext) bfd_getb32 (ext)
|
|
|
|
/* On NetBSD, the entry point may be taken to be the start of the text
|
|
section. */
|
|
#define MY_entry_is_text_address 1
|
|
|
|
#define MY_write_object_contents MY (write_object_contents)
|
|
static bfd_boolean MY (write_object_contents) (bfd *);
|
|
|
|
#define MY_text_includes_header 1
|
|
|
|
#include "aout-target.h"
|
|
|
|
/* Write an object file.
|
|
Section contents have already been written. We write the
|
|
file header, symbols, and relocation. */
|
|
|
|
static bfd_boolean
|
|
MY (write_object_contents) (bfd *abfd)
|
|
{
|
|
struct external_exec exec_bytes;
|
|
struct internal_exec *execp = exec_hdr (abfd);
|
|
|
|
/* We must make certain that the magic number has been set. This
|
|
will normally have been done by set_section_contents, but only if
|
|
there actually are some section contents. */
|
|
if (! abfd->output_has_begun)
|
|
NAME (aout, adjust_sizes_and_vmas) (abfd);
|
|
|
|
obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
|
|
|
|
/* Magic number, maestro, please! */
|
|
switch (bfd_get_arch(abfd))
|
|
{
|
|
case DEFAULT_ARCH:
|
|
N_SET_MACHTYPE (execp, DEFAULT_MID);
|
|
break;
|
|
default:
|
|
N_SET_MACHTYPE (execp, M_UNKNOWN);
|
|
break;
|
|
}
|
|
|
|
/* The NetBSD magic number is always big-endian. */
|
|
#ifndef TARGET_IS_BIG_ENDIAN_P
|
|
/* XXX aren't there any macro to change byteorder of a word independent of
|
|
the host's or target's endiannesses? */
|
|
execp->a_info
|
|
= (execp->a_info & 0xffu) << 24 | (execp->a_info & 0xff00) << 8
|
|
| (execp->a_info & 0xff0000) >> 8 | (execp->a_info & 0xff000000) >> 24;
|
|
#endif
|
|
|
|
WRITE_HEADERS (abfd, execp);
|
|
|
|
return TRUE;
|
|
}
|