114 lines
3.6 KiB
C
114 lines
3.6 KiB
C
/* BFD back-end definitions used by all NetBSD targets.
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Copyright (C) 1990-2022 Free Software Foundation, Inc.
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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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/* Check for our machine type (part of magic number). */
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#ifndef MACHTYPE_OK
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#define MACHTYPE_OK(m) ((m) == DEFAULT_MID || (m) == M_UNKNOWN)
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#endif
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/* This is the normal load address for executables. */
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#define TEXT_START_ADDR TARGET_PAGE_SIZE
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/* NetBSD ZMAGIC has its header in the text segment. */
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#define N_HEADER_IN_TEXT(x) 1
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/* Determine if this is a shared library using the flags. */
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#define N_SHARED_LIB(x) (N_DYNAMIC (x))
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/* We have 6 bits of flags and 10 bits of machine ID. */
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#define N_MACHTYPE(execp) \
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((enum machine_type) (((execp)->a_info >> 16) & 0x03ff))
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#define N_FLAGS(execp) \
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(((execp)->a_info >> 26) & 0x3f)
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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) & 0x3ff) << 16) \
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| (((flags) & 0x3f) << 24))
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#define N_SET_MACHTYPE(execp, machtype) \
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((execp)->a_info = \
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((execp)->a_info & 0xfb00ffff) | ((((int) (machtype)) & 0x3ff) << 16))
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#define N_SET_FLAGS(execp, flags) \
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((execp)->a_info = \
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((execp)->a_info & 0x03ffffff) | ((flags & 0x3fu) << 26))
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "libaout.h"
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/* On NetBSD, the magic number is always in ntohl's "network" (big-endian)
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format. */
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#define SWAP_MAGIC(ext) bfd_getb32 (ext)
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/* On NetBSD, the entry point may be taken to be the start of the text
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section. */
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#define MY_entry_is_text_address 1
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#define MY_write_object_contents MY (write_object_contents)
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static bool MY (write_object_contents) (bfd *);
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#define MY_text_includes_header 1
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#include "aout-target.h"
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/* Write an object file.
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Section contents have already been written. We write the
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file header, symbols, and relocation. */
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static bool
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MY (write_object_contents) (bfd *abfd)
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{
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struct external_exec exec_bytes;
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struct internal_exec *execp = exec_hdr (abfd);
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/* We must make certain that the magic number has been set. This
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will normally have been done by set_section_contents, but only if
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there actually are some section contents. */
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if (! abfd->output_has_begun)
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NAME (aout, adjust_sizes_and_vmas) (abfd);
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obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
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/* Magic number, maestro, please! */
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switch (bfd_get_arch(abfd))
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{
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case DEFAULT_ARCH:
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N_SET_MACHTYPE (execp, DEFAULT_MID);
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break;
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default:
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N_SET_MACHTYPE (execp, M_UNKNOWN);
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break;
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}
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/* The NetBSD magic number is always big-endian. */
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#ifndef TARGET_IS_BIG_ENDIAN_P
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/* XXX aren't there any macro to change byteorder of a word independent of
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the host's or target's endiannesses? */
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execp->a_info
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= (execp->a_info & 0xffu) << 24 | (execp->a_info & 0xff00) << 8
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| (execp->a_info & 0xff0000) >> 8 | (execp->a_info & 0xff000000) >> 24;
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#endif
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WRITE_HEADERS (abfd, execp);
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return true;
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}
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