| 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 | } |