1 | /* BFD back-end definitions used by all NetBSD targets. |
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2 | Copyright 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 2000 |
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3 | Free Software Foundation, Inc. |
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4 | |
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5 | This file is part of BFD, the Binary File Descriptor library. |
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6 | |
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7 | This program is free software; you can redistribute it and/or modify |
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8 | it under the terms of the GNU General Public License as published by |
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9 | the Free Software Foundation; either version 2 of the License, or |
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10 | (at your option) any later version. |
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11 | |
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12 | This program is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | GNU General Public License for more details. |
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16 | |
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17 | You should have received a copy of the GNU General Public License |
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18 | along with this program; if not, write to the Free Software |
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19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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20 | USA. */ |
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21 | |
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22 | /* Check for our machine type (part of magic number). */ |
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23 | #ifndef MACHTYPE_OK |
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24 | #define MACHTYPE_OK(m) ((m) == DEFAULT_MID || (m) == M_UNKNOWN) |
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25 | #endif |
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26 | |
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27 | /* This is the normal load address for executables. */ |
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28 | #define TEXT_START_ADDR TARGET_PAGE_SIZE |
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29 | |
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30 | /* NetBSD ZMAGIC has its header in the text segment. */ |
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31 | #define N_HEADER_IN_TEXT(x) 1 |
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32 | |
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33 | /* Determine if this is a shared library using the flags. */ |
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34 | #define N_SHARED_LIB(x) (N_DYNAMIC(x)) |
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35 | |
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36 | /* We have 6 bits of flags and 10 bits of machine ID. */ |
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37 | #define N_MACHTYPE(exec) \ |
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38 | ((enum machine_type) (((exec).a_info >> 16) & 0x03ff)) |
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39 | #define N_FLAGS(exec) \ |
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40 | (((exec).a_info >> 26) & 0x3f) |
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41 | |
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42 | #define N_SET_INFO(exec, magic, type, flags) \ |
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43 | ((exec).a_info = ((magic) & 0xffff) \ |
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44 | | (((int) (type) & 0x3ff) << 16) \ |
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45 | | (((flags) & 0x3f) << 24)) |
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46 | #define N_SET_MACHTYPE(exec, machtype) \ |
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47 | ((exec).a_info = \ |
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48 | ((exec).a_info & 0xfb00ffff) | ((((int) (machtype))&0x3ff) << 16)) |
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49 | #define N_SET_FLAGS(exec, flags) \ |
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50 | ((exec).a_info = \ |
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51 | ((exec).a_info & 0x03ffffff) | ((flags & 0x03f) << 26)) |
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52 | |
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53 | #include "bfd.h" |
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54 | #include "sysdep.h" |
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55 | #include "libbfd.h" |
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56 | #include "libaout.h" |
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57 | |
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58 | /* On NetBSD, the magic number is always in ntohl's "network" (big-endian) |
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59 | format. */ |
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60 | #define SWAP_MAGIC(ext) bfd_getb32 (ext) |
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61 | |
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62 | /* On NetBSD, the entry point may be taken to be the start of the text |
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63 | section. */ |
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64 | #define MY_entry_is_text_address 1 |
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65 | |
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66 | #define MY_write_object_contents MY(write_object_contents) |
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67 | static boolean MY(write_object_contents) PARAMS ((bfd *abfd)); |
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68 | #define MY_text_includes_header 1 |
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69 | |
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70 | #include "aout-target.h" |
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71 | |
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72 | /* Write an object file. |
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73 | Section contents have already been written. We write the |
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74 | file header, symbols, and relocation. */ |
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75 | |
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76 | static boolean |
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77 | MY(write_object_contents) (abfd) |
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78 | bfd *abfd; |
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79 | { |
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80 | struct external_exec exec_bytes; |
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81 | struct internal_exec *execp = exec_hdr (abfd); |
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82 | |
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83 | /* We must make certain that the magic number has been set. This |
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84 | will normally have been done by set_section_contents, but only if |
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85 | there actually are some section contents. */ |
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86 | if (! abfd->output_has_begun) |
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87 | { |
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88 | bfd_size_type text_size; |
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89 | file_ptr text_end; |
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90 | |
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91 | NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); |
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92 | } |
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93 | |
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94 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
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95 | |
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96 | /* Magic number, maestro, please! */ |
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97 | switch (bfd_get_arch(abfd)) { |
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98 | case DEFAULT_ARCH: |
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99 | N_SET_MACHTYPE(*execp, DEFAULT_MID); |
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100 | break; |
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101 | default: |
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102 | N_SET_MACHTYPE(*execp, M_UNKNOWN); |
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103 | break; |
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104 | } |
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105 | |
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106 | /* The NetBSD magic number is always big-endian */ |
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107 | #ifndef TARGET_IS_BIG_ENDIAN_P |
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108 | /* XXX aren't there any macro to change byteorder of a word independent of |
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109 | the host's or target's endianesses? */ |
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110 | execp->a_info |
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111 | = (execp->a_info & 0xff) << 24 | (execp->a_info & 0xff00) << 8 |
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112 | | (execp->a_info & 0xff0000) >> 8 | (execp->a_info & 0xff000000) >> 24; |
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113 | #endif |
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114 | |
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115 | WRITE_HEADERS(abfd, execp); |
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116 | |
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117 | return true; |
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118 | } |
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