1 /* BFD back-end definitions used by all NetBSD targets. 2 Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 2000, 2002, 3 2005, 2007, 2011 Free Software Foundation, Inc. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22 23 /* Check for our machine type (part of magic number). */ 24 #ifndef MACHTYPE_OK 25 #define MACHTYPE_OK(m) ((m) == DEFAULT_MID || (m) == M_UNKNOWN) 26 #endif 27 28 /* This is the normal load address for executables. */ 29 #define TEXT_START_ADDR TARGET_PAGE_SIZE 30 31 /* NetBSD ZMAGIC has its header in the text segment. */ 32 #define N_HEADER_IN_TEXT(x) 1 33 34 /* Determine if this is a shared library using the flags. */ 35 #define N_SHARED_LIB(x) (N_DYNAMIC (x)) 36 37 /* We have 6 bits of flags and 10 bits of machine ID. */ 38 #define N_MACHTYPE(exec) \ 39 ((enum machine_type) (((exec).a_info >> 16) & 0x03ff)) 40 #define N_FLAGS(exec) \ 41 (((exec).a_info >> 26) & 0x3f) 42 43 #define N_SET_INFO(exec, magic, type, flags) \ 44 ((exec).a_info = ((magic) & 0xffff) \ 45 | (((int) (type) & 0x3ff) << 16) \ 46 | (((flags) & 0x3f) << 24)) 47 #define N_SET_MACHTYPE(exec, machtype) \ 48 ((exec).a_info = \ 49 ((exec).a_info & 0xfb00ffff) | ((((int) (machtype)) & 0x3ff) << 16)) 50 #define N_SET_FLAGS(exec, flags) \ 51 ((exec).a_info = \ 52 ((exec).a_info & 0x03ffffff) | ((flags & 0x03f) << 26)) 53 54 #include "sysdep.h" 55 #include "bfd.h" 56 #include "libbfd.h" 57 #include "libaout.h" 58 59 /* On NetBSD, the magic number is always in ntohl's "network" (big-endian) 60 format. */ 61 #define SWAP_MAGIC(ext) bfd_getb32 (ext) 62 63 /* On NetBSD, the entry point may be taken to be the start of the text 64 section. */ 65 #define MY_entry_is_text_address 1 66 67 #define MY_write_object_contents MY (write_object_contents) 68 static bfd_boolean MY (write_object_contents) (bfd *); 69 70 #define MY_text_includes_header 1 71 72 #include "aout-target.h" 73 74 /* Write an object file. 75 Section contents have already been written. We write the 76 file header, symbols, and relocation. */ 77 78 static bfd_boolean 79 MY (write_object_contents) (bfd *abfd) 80 { 81 struct external_exec exec_bytes; 82 struct internal_exec *execp = exec_hdr (abfd); 83 84 /* We must make certain that the magic number has been set. This 85 will normally have been done by set_section_contents, but only if 86 there actually are some section contents. */ 87 if (! abfd->output_has_begun) 88 { 89 bfd_size_type text_size; 90 file_ptr text_end; 91 92 NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end); 93 } 94 95 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 96 97 /* Magic number, maestro, please! */ 98 switch (bfd_get_arch(abfd)) 99 { 100 case DEFAULT_ARCH: 101 N_SET_MACHTYPE(*execp, DEFAULT_MID); 102 break; 103 default: 104 N_SET_MACHTYPE(*execp, M_UNKNOWN); 105 break; 106 } 107 108 /* The NetBSD magic number is always big-endian. */ 109 #ifndef TARGET_IS_BIG_ENDIAN_P 110 /* XXX aren't there any macro to change byteorder of a word independent of 111 the host's or target's endiannesses? */ 112 execp->a_info 113 = (execp->a_info & 0xff) << 24 | (execp->a_info & 0xff00) << 8 114 | (execp->a_info & 0xff0000) >> 8 | (execp->a_info & 0xff000000) >> 24; 115 #endif 116 117 WRITE_HEADERS (abfd, execp); 118 119 return TRUE; 120 } 121