1 /* BFD back-end definitions used by all NetBSD targets. 2 Copyright (C) 1990-2014 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(exec) \ 38 ((enum machine_type) (((exec).a_info >> 16) & 0x03ff)) 39 #define N_FLAGS(exec) \ 40 (((exec).a_info >> 26) & 0x3f) 41 42 #define N_SET_INFO(exec, magic, type, flags) \ 43 ((exec).a_info = ((magic) & 0xffff) \ 44 | (((int) (type) & 0x3ff) << 16) \ 45 | (((flags) & 0x3f) << 24)) 46 #define N_SET_MACHTYPE(exec, machtype) \ 47 ((exec).a_info = \ 48 ((exec).a_info & 0xfb00ffff) | ((((int) (machtype)) & 0x3ff) << 16)) 49 #define N_SET_FLAGS(exec, flags) \ 50 ((exec).a_info = \ 51 ((exec).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) 67 static 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 77 static bfd_boolean 78 MY (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 { 88 bfd_size_type text_size; 89 file_ptr text_end; 90 91 NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end); 92 } 93 94 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 95 96 /* Magic number, maestro, please! */ 97 switch (bfd_get_arch(abfd)) 98 { 99 case DEFAULT_ARCH: 100 N_SET_MACHTYPE(*execp, DEFAULT_MID); 101 break; 102 default: 103 N_SET_MACHTYPE(*execp, M_UNKNOWN); 104 break; 105 } 106 107 /* The NetBSD magic number is always big-endian. */ 108 #ifndef TARGET_IS_BIG_ENDIAN_P 109 /* XXX aren't there any macro to change byteorder of a word independent of 110 the host's or target's endiannesses? */ 111 execp->a_info 112 = (execp->a_info & 0xff) << 24 | (execp->a_info & 0xff00) << 8 113 | (execp->a_info & 0xff0000) >> 8 | (execp->a_info & 0xff000000) >> 24; 114 #endif 115 116 WRITE_HEADERS (abfd, execp); 117 118 return TRUE; 119 } 120
