1/* BFD back-end definitions used by all NetBSD targets. 2 Copyright (C) 1990-2017 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 22/* Check for our machine type (part of magic number). */ 23#ifndef MACHTYPE_OK 24#define MACHTYPE_OK(m) ((m) == DEFAULT_MID || (m) == M_UNKNOWN) 25#endif 26 27/* This is the normal load address for executables. */ 28#define TEXT_START_ADDR TARGET_PAGE_SIZE 29 30/* NetBSD ZMAGIC has its header in the text segment. */ 31#define N_HEADER_IN_TEXT(x) 1 32 33/* Determine if this is a shared library using the flags. */ 34#define N_SHARED_LIB(x) (N_DYNAMIC (x)) 35 36/* We have 6 bits of flags and 10 bits of machine ID. */ 37#define N_MACHTYPE(execp) \ 38 ((enum machine_type) (((execp)->a_info >> 16) & 0x03ff)) 39#define N_FLAGS(execp) \ 40 (((execp)->a_info >> 26) & 0x3f) 41 42#define N_SET_INFO(execp, magic, type, flags) \ 43 ((execp)->a_info = ((magic) & 0xffff) \ 44 | (((int) (type) & 0x3ff) << 16) \ 45 | (((flags) & 0x3f) << 24)) 46#define N_SET_MACHTYPE(execp, machtype) \ 47 ((execp)->a_info = \ 48 ((execp)->a_info & 0xfb00ffff) | ((((int) (machtype)) & 0x3ff) << 16)) 49#define N_SET_FLAGS(execp, flags) \ 50 ((execp)->a_info = \ 51 ((execp)->a_info & 0x03ffffff) | ((flags & 0x03f) << 26)) 52 53#include "sysdep.h" 54#include "bfd.h" 55#include "libbfd.h" 56#include "libaout.h" 57 58/* On NetBSD, the magic number is always in ntohl's "network" (big-endian) 59 format. */ 60#define SWAP_MAGIC(ext) bfd_getb32 (ext) 61 62/* On NetBSD, the entry point may be taken to be the start of the text 63 section. */ 64#define MY_entry_is_text_address 1 65 66#define MY_write_object_contents MY (write_object_contents) 67static bfd_boolean MY (write_object_contents) (bfd *); 68 69#define MY_text_includes_header 1 70 71#include "aout-target.h" 72 73/* Write an object file. 74 Section contents have already been written. We write the 75 file header, symbols, and relocation. */ 76 77static bfd_boolean 78MY (write_object_contents) (bfd *abfd) 79{ 80 struct external_exec exec_bytes; 81 struct internal_exec *execp = exec_hdr (abfd); 82 83 /* We must make certain that the magic number has been set. This 84 will normally have been done by set_section_contents, but only if 85 there actually are some section contents. */ 86 if (! abfd->output_has_begun) 87 NAME (aout, adjust_sizes_and_vmas) (abfd); 88 89 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 90 91 /* Magic number, maestro, please! */ 92 switch (bfd_get_arch(abfd)) 93 { 94 case DEFAULT_ARCH: 95 N_SET_MACHTYPE (execp, DEFAULT_MID); 96 break; 97 default: 98 N_SET_MACHTYPE (execp, M_UNKNOWN); 99 break; 100 } 101 102 /* The NetBSD magic number is always big-endian. */ 103#ifndef TARGET_IS_BIG_ENDIAN_P 104 /* XXX aren't there any macro to change byteorder of a word independent of 105 the host's or target's endiannesses? */ 106 execp->a_info 107 = (execp->a_info & 0xff) << 24 | (execp->a_info & 0xff00) << 8 108 | (execp->a_info & 0xff0000) >> 8 | (execp->a_info & 0xff000000) >> 24; 109#endif 110 111 WRITE_HEADERS (abfd, execp); 112 113 return TRUE; 114} 115