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5197 | serge | 1 | /* BFD back-end for Intel 386 COFF files. |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
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3 | 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011, 2012 |
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4 | Free Software Foundation, Inc. |
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5 | Written by Cygnus Support. |
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6 | |||
7 | This file is part of BFD, the Binary File Descriptor library. |
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8 | |||
9 | This program is free software; you can redistribute it and/or modify |
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10 | it under the terms of the GNU General Public License as published by |
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11 | the Free Software Foundation; either version 3 of the License, or |
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12 | (at your option) any later version. |
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13 | |||
14 | This program is distributed in the hope that it will be useful, |
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | GNU General Public License for more details. |
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18 | |||
19 | You should have received a copy of the GNU General Public License |
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20 | along with this program; if not, write to the Free Software |
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21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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22 | MA 02110-1301, USA. */ |
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23 | |||
24 | #include "sysdep.h" |
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25 | #include "bfd.h" |
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26 | #include "libbfd.h" |
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27 | |||
28 | #include "coff/i386.h" |
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29 | |||
30 | #include "coff/internal.h" |
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31 | |||
32 | #ifdef COFF_WITH_PE |
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33 | #include "coff/pe.h" |
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34 | #endif |
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35 | |||
36 | #ifdef COFF_GO32_EXE |
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37 | #include "coff/go32exe.h" |
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38 | #endif |
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39 | |||
40 | #ifndef bfd_pe_print_pdata |
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41 | #define bfd_pe_print_pdata NULL |
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42 | #endif |
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43 | |||
44 | #include "libcoff.h" |
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45 | |||
46 | static reloc_howto_type *coff_i386_rtype_to_howto |
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47 | (bfd *, asection *, struct internal_reloc *, |
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48 | struct coff_link_hash_entry *, struct internal_syment *, |
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49 | bfd_vma *); |
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50 | static reloc_howto_type *coff_i386_reloc_type_lookup |
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51 | (bfd *, bfd_reloc_code_real_type); |
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52 | |||
53 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2) |
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54 | /* The page size is a guess based on ELF. */ |
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55 | |||
56 | #define COFF_PAGE_SIZE 0x1000 |
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57 | |||
58 | /* For some reason when using i386 COFF the value stored in the .text |
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59 | section for a reference to a common symbol is the value itself plus |
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60 | any desired offset. Ian Taylor, Cygnus Support. */ |
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61 | |||
62 | /* If we are producing relocatable output, we need to do some |
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63 | adjustments to the object file that are not done by the |
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64 | bfd_perform_relocation function. This function is called by every |
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65 | reloc type to make any required adjustments. */ |
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66 | |||
67 | static bfd_reloc_status_type |
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68 | coff_i386_reloc (bfd *abfd, |
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69 | arelent *reloc_entry, |
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70 | asymbol *symbol, |
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71 | void * data, |
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72 | asection *input_section ATTRIBUTE_UNUSED, |
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73 | bfd *output_bfd, |
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74 | char **error_message ATTRIBUTE_UNUSED) |
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75 | { |
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76 | symvalue diff; |
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77 | |||
78 | #ifndef COFF_WITH_PE |
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79 | if (output_bfd == (bfd *) NULL) |
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80 | return bfd_reloc_continue; |
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81 | #endif |
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82 | |||
83 | if (bfd_is_com_section (symbol->section)) |
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84 | { |
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85 | #ifndef COFF_WITH_PE |
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86 | /* We are relocating a common symbol. The current value in the |
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87 | object file is ORIG + OFFSET, where ORIG is the value of the |
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88 | common symbol as seen by the object file when it was compiled |
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89 | (this may be zero if the symbol was undefined) and OFFSET is |
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90 | the offset into the common symbol (normally zero, but may be |
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91 | non-zero when referring to a field in a common structure). |
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92 | ORIG is the negative of reloc_entry->addend, which is set by |
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93 | the CALC_ADDEND macro below. We want to replace the value in |
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94 | the object file with NEW + OFFSET, where NEW is the value of |
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95 | the common symbol which we are going to put in the final |
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96 | object file. NEW is symbol->value. */ |
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97 | diff = symbol->value + reloc_entry->addend; |
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98 | #else |
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99 | /* In PE mode, we do not offset the common symbol. */ |
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100 | diff = reloc_entry->addend; |
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101 | #endif |
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102 | } |
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103 | else |
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104 | { |
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105 | /* For some reason bfd_perform_relocation always effectively |
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106 | ignores the addend for a COFF target when producing |
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107 | relocatable output. This seems to be always wrong for 386 |
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108 | COFF, so we handle the addend here instead. */ |
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109 | #ifdef COFF_WITH_PE |
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110 | if (output_bfd == (bfd *) NULL) |
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111 | { |
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112 | reloc_howto_type *howto = reloc_entry->howto; |
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113 | |||
114 | /* Although PC relative relocations are very similar between |
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115 | PE and non-PE formats, but they are off by 1 << howto->size |
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116 | bytes. For the external relocation, PE is very different |
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117 | from others. See md_apply_fix3 () in gas/config/tc-i386.c. |
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118 | When we link PE and non-PE object files together to |
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119 | generate a non-PE executable, we have to compensate it |
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120 | here. */ |
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121 | if (howto->pc_relative && howto->pcrel_offset) |
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122 | diff = -(1 << howto->size); |
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123 | else if (symbol->flags & BSF_WEAK) |
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124 | diff = reloc_entry->addend - symbol->value; |
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125 | else |
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126 | diff = -reloc_entry->addend; |
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127 | } |
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128 | else |
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129 | #endif |
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130 | diff = reloc_entry->addend; |
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131 | } |
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132 | |||
133 | #ifdef COFF_WITH_PE |
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134 | /* FIXME: How should this case be handled? */ |
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135 | if (reloc_entry->howto->type == R_IMAGEBASE |
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136 | && output_bfd != NULL |
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137 | && bfd_get_flavour(output_bfd) == bfd_target_coff_flavour) |
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138 | diff -= pe_data (output_bfd)->pe_opthdr.ImageBase; |
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139 | #endif |
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140 | |||
141 | #define DOIT(x) \ |
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142 | x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask)) |
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143 | |||
144 | if (diff != 0) |
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145 | { |
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146 | reloc_howto_type *howto = reloc_entry->howto; |
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147 | unsigned char *addr = (unsigned char *) data + reloc_entry->address; |
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148 | |||
149 | switch (howto->size) |
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150 | { |
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151 | case 0: |
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152 | { |
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153 | char x = bfd_get_8 (abfd, addr); |
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154 | DOIT (x); |
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155 | bfd_put_8 (abfd, x, addr); |
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156 | } |
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157 | break; |
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158 | |||
159 | case 1: |
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160 | { |
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161 | short x = bfd_get_16 (abfd, addr); |
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162 | DOIT (x); |
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163 | bfd_put_16 (abfd, (bfd_vma) x, addr); |
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164 | } |
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165 | break; |
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166 | |||
167 | case 2: |
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168 | { |
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169 | long x = bfd_get_32 (abfd, addr); |
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170 | DOIT (x); |
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171 | bfd_put_32 (abfd, (bfd_vma) x, addr); |
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172 | } |
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173 | break; |
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174 | |||
175 | default: |
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176 | abort (); |
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177 | } |
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178 | } |
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179 | |||
180 | /* Now let bfd_perform_relocation finish everything up. */ |
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181 | return bfd_reloc_continue; |
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182 | } |
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183 | |||
184 | #ifdef COFF_WITH_PE |
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185 | /* Return TRUE if this relocation should appear in the output .reloc |
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186 | section. */ |
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187 | |||
188 | static bfd_boolean in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED, |
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189 | reloc_howto_type *howto) |
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190 | { |
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191 | return ! howto->pc_relative && howto->type != R_IMAGEBASE |
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192 | && howto->type != R_SECREL32; |
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193 | } |
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194 | #endif /* COFF_WITH_PE */ |
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195 | |||
196 | #ifndef PCRELOFFSET |
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197 | #define PCRELOFFSET FALSE |
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198 | #endif |
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199 | |||
200 | static reloc_howto_type howto_table[] = |
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201 | { |
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202 | EMPTY_HOWTO (0), |
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203 | EMPTY_HOWTO (1), |
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204 | EMPTY_HOWTO (2), |
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205 | EMPTY_HOWTO (3), |
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206 | EMPTY_HOWTO (4), |
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207 | EMPTY_HOWTO (5), |
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208 | HOWTO (R_DIR32, /* type */ |
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209 | 0, /* rightshift */ |
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210 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
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211 | 32, /* bitsize */ |
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212 | FALSE, /* pc_relative */ |
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213 | 0, /* bitpos */ |
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214 | complain_overflow_bitfield, /* complain_on_overflow */ |
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215 | coff_i386_reloc, /* special_function */ |
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216 | "dir32", /* name */ |
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217 | TRUE, /* partial_inplace */ |
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218 | 0xffffffff, /* src_mask */ |
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219 | 0xffffffff, /* dst_mask */ |
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220 | TRUE), /* pcrel_offset */ |
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221 | /* PE IMAGE_REL_I386_DIR32NB relocation (7). */ |
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222 | HOWTO (R_IMAGEBASE, /* type */ |
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223 | 0, /* rightshift */ |
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224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
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225 | 32, /* bitsize */ |
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226 | FALSE, /* pc_relative */ |
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227 | 0, /* bitpos */ |
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228 | complain_overflow_bitfield, /* complain_on_overflow */ |
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229 | coff_i386_reloc, /* special_function */ |
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230 | "rva32", /* name */ |
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231 | TRUE, /* partial_inplace */ |
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232 | 0xffffffff, /* src_mask */ |
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233 | 0xffffffff, /* dst_mask */ |
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234 | FALSE), /* pcrel_offset */ |
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235 | EMPTY_HOWTO (010), |
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236 | EMPTY_HOWTO (011), |
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237 | EMPTY_HOWTO (012), |
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238 | #ifdef COFF_WITH_PE |
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239 | /* 32-bit longword section relative relocation (013). */ |
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240 | HOWTO (R_SECREL32, /* type */ |
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241 | 0, /* rightshift */ |
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242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
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243 | 32, /* bitsize */ |
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244 | FALSE, /* pc_relative */ |
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245 | 0, /* bitpos */ |
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246 | complain_overflow_bitfield, /* complain_on_overflow */ |
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247 | coff_i386_reloc, /* special_function */ |
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248 | "secrel32", /* name */ |
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249 | TRUE, /* partial_inplace */ |
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250 | 0xffffffff, /* src_mask */ |
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251 | 0xffffffff, /* dst_mask */ |
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252 | TRUE), /* pcrel_offset */ |
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253 | #else |
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254 | EMPTY_HOWTO (013), |
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255 | #endif |
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256 | EMPTY_HOWTO (014), |
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257 | EMPTY_HOWTO (015), |
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258 | EMPTY_HOWTO (016), |
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259 | /* Byte relocation (017). */ |
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260 | HOWTO (R_RELBYTE, /* type */ |
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261 | 0, /* rightshift */ |
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262 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
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263 | 8, /* bitsize */ |
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264 | FALSE, /* pc_relative */ |
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265 | 0, /* bitpos */ |
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266 | complain_overflow_bitfield, /* complain_on_overflow */ |
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267 | coff_i386_reloc, /* special_function */ |
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268 | "8", /* name */ |
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269 | TRUE, /* partial_inplace */ |
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270 | 0x000000ff, /* src_mask */ |
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271 | 0x000000ff, /* dst_mask */ |
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272 | PCRELOFFSET), /* pcrel_offset */ |
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273 | /* 16-bit word relocation (020). */ |
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274 | HOWTO (R_RELWORD, /* type */ |
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275 | 0, /* rightshift */ |
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276 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
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277 | 16, /* bitsize */ |
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278 | FALSE, /* pc_relative */ |
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279 | 0, /* bitpos */ |
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280 | complain_overflow_bitfield, /* complain_on_overflow */ |
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281 | coff_i386_reloc, /* special_function */ |
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282 | "16", /* name */ |
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283 | TRUE, /* partial_inplace */ |
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284 | 0x0000ffff, /* src_mask */ |
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285 | 0x0000ffff, /* dst_mask */ |
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286 | PCRELOFFSET), /* pcrel_offset */ |
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287 | /* 32-bit longword relocation (021). */ |
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288 | HOWTO (R_RELLONG, /* type */ |
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289 | 0, /* rightshift */ |
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290 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
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291 | 32, /* bitsize */ |
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292 | FALSE, /* pc_relative */ |
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293 | 0, /* bitpos */ |
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294 | complain_overflow_bitfield, /* complain_on_overflow */ |
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295 | coff_i386_reloc, /* special_function */ |
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296 | "32", /* name */ |
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297 | TRUE, /* partial_inplace */ |
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298 | 0xffffffff, /* src_mask */ |
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299 | 0xffffffff, /* dst_mask */ |
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300 | PCRELOFFSET), /* pcrel_offset */ |
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301 | /* Byte PC relative relocation (022). */ |
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302 | HOWTO (R_PCRBYTE, /* type */ |
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303 | 0, /* rightshift */ |
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304 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
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305 | 8, /* bitsize */ |
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306 | TRUE, /* pc_relative */ |
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307 | 0, /* bitpos */ |
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308 | complain_overflow_signed, /* complain_on_overflow */ |
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309 | coff_i386_reloc, /* special_function */ |
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310 | "DISP8", /* name */ |
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311 | TRUE, /* partial_inplace */ |
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312 | 0x000000ff, /* src_mask */ |
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313 | 0x000000ff, /* dst_mask */ |
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314 | PCRELOFFSET), /* pcrel_offset */ |
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315 | /* 16-bit word PC relative relocation (023). */ |
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316 | HOWTO (R_PCRWORD, /* type */ |
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317 | 0, /* rightshift */ |
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318 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
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319 | 16, /* bitsize */ |
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320 | TRUE, /* pc_relative */ |
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321 | 0, /* bitpos */ |
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322 | complain_overflow_signed, /* complain_on_overflow */ |
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323 | coff_i386_reloc, /* special_function */ |
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324 | "DISP16", /* name */ |
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325 | TRUE, /* partial_inplace */ |
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326 | 0x0000ffff, /* src_mask */ |
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327 | 0x0000ffff, /* dst_mask */ |
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328 | PCRELOFFSET), /* pcrel_offset */ |
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329 | /* 32-bit longword PC relative relocation (024). */ |
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330 | HOWTO (R_PCRLONG, /* type */ |
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331 | 0, /* rightshift */ |
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332 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
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333 | 32, /* bitsize */ |
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334 | TRUE, /* pc_relative */ |
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335 | 0, /* bitpos */ |
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336 | complain_overflow_signed, /* complain_on_overflow */ |
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337 | coff_i386_reloc, /* special_function */ |
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338 | "DISP32", /* name */ |
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339 | TRUE, /* partial_inplace */ |
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340 | 0xffffffff, /* src_mask */ |
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341 | 0xffffffff, /* dst_mask */ |
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342 | PCRELOFFSET) /* pcrel_offset */ |
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343 | }; |
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344 | |||
345 | /* Turn a howto into a reloc nunmber */ |
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346 | |||
347 | #define SELECT_RELOC(x,howto) { x.r_type = howto->type; } |
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348 | #define BADMAG(x) I386BADMAG(x) |
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349 | #define I386 1 /* Customize coffcode.h */ |
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350 | |||
351 | #define RTYPE2HOWTO(cache_ptr, dst) \ |
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352 | ((cache_ptr)->howto = \ |
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353 | ((dst)->r_type < sizeof (howto_table) / sizeof (howto_table[0]) \ |
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354 | ? howto_table + (dst)->r_type \ |
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355 | : NULL)) |
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356 | |||
357 | /* For 386 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared |
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358 | library. On some other COFF targets STYP_BSS is normally |
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359 | STYP_NOLOAD. */ |
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360 | #define BSS_NOLOAD_IS_SHARED_LIBRARY |
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361 | |||
362 | /* Compute the addend of a reloc. If the reloc is to a common symbol, |
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363 | the object file contains the value of the common symbol. By the |
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364 | time this is called, the linker may be using a different symbol |
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365 | from a different object file with a different value. Therefore, we |
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366 | hack wildly to locate the original symbol from this file so that we |
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367 | can make the correct adjustment. This macro sets coffsym to the |
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368 | symbol from the original file, and uses it to set the addend value |
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369 | correctly. If this is not a common symbol, the usual addend |
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370 | calculation is done, except that an additional tweak is needed for |
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371 | PC relative relocs. |
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372 | FIXME: This macro refers to symbols and asect; these are from the |
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373 | calling function, not the macro arguments. */ |
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374 | |||
375 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ |
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376 | { \ |
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377 | coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \ |
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378 | if (ptr && bfd_asymbol_bfd (ptr) != abfd) \ |
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379 | coffsym = (obj_symbols (abfd) \ |
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380 | + (cache_ptr->sym_ptr_ptr - symbols)); \ |
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381 | else if (ptr) \ |
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382 | coffsym = coff_symbol_from (abfd, ptr); \ |
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383 | if (coffsym != (coff_symbol_type *) NULL \ |
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384 | && coffsym->native->u.syment.n_scnum == 0) \ |
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385 | cache_ptr->addend = - coffsym->native->u.syment.n_value; \ |
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386 | else if (ptr && bfd_asymbol_bfd (ptr) == abfd \ |
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387 | && ptr->section != (asection *) NULL) \ |
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388 | cache_ptr->addend = - (ptr->section->vma + ptr->value); \ |
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389 | else \ |
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390 | cache_ptr->addend = 0; \ |
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391 | if (ptr && howto_table[reloc.r_type].pc_relative) \ |
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392 | cache_ptr->addend += asect->vma; \ |
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393 | } |
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394 | |||
395 | /* We use the special COFF backend linker. For normal i386 COFF, we |
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396 | can use the generic relocate_section routine. For PE, we need our |
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397 | own routine. */ |
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398 | |||
399 | #ifndef COFF_WITH_PE |
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400 | |||
401 | #define coff_relocate_section _bfd_coff_generic_relocate_section |
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402 | |||
403 | #else /* COFF_WITH_PE */ |
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404 | |||
405 | /* The PE relocate section routine. The only difference between this |
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406 | and the regular routine is that we don't want to do anything for a |
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407 | relocatable link. */ |
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408 | |||
409 | static bfd_boolean |
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410 | coff_pe_i386_relocate_section (bfd *output_bfd, |
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411 | struct bfd_link_info *info, |
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412 | bfd *input_bfd, |
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413 | asection *input_section, |
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414 | bfd_byte *contents, |
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415 | struct internal_reloc *relocs, |
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416 | struct internal_syment *syms, |
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417 | asection **sections) |
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418 | { |
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419 | if (info->relocatable) |
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420 | return TRUE; |
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421 | |||
422 | return _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd, |
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423 | input_section, contents, |
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424 | relocs, syms, sections); |
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425 | } |
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426 | |||
427 | #define coff_relocate_section coff_pe_i386_relocate_section |
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428 | |||
429 | #endif /* COFF_WITH_PE */ |
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430 | |||
431 | /* Convert an rtype to howto for the COFF backend linker. */ |
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432 | |||
433 | static reloc_howto_type * |
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434 | coff_i386_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
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435 | asection *sec, |
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436 | struct internal_reloc *rel, |
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437 | struct coff_link_hash_entry *h, |
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438 | struct internal_syment *sym, |
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439 | bfd_vma *addendp) |
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440 | { |
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441 | reloc_howto_type *howto; |
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442 | |||
443 | if (rel->r_type >= sizeof (howto_table) / sizeof (howto_table[0])) |
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444 | { |
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445 | bfd_set_error (bfd_error_bad_value); |
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446 | return NULL; |
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447 | } |
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448 | |||
449 | howto = howto_table + rel->r_type; |
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450 | |||
451 | #ifdef COFF_WITH_PE |
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452 | /* Cancel out code in _bfd_coff_generic_relocate_section. */ |
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453 | *addendp = 0; |
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454 | #endif |
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455 | |||
456 | if (howto->pc_relative) |
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457 | *addendp += sec->vma; |
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458 | |||
459 | if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0) |
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460 | { |
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461 | /* This is a common symbol. The section contents include the |
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462 | size (sym->n_value) as an addend. The relocate_section |
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463 | function will be adding in the final value of the symbol. We |
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464 | need to subtract out the current size in order to get the |
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465 | correct result. */ |
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466 | |||
467 | BFD_ASSERT (h != NULL); |
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468 | |||
469 | #ifndef COFF_WITH_PE |
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470 | /* I think we *do* want to bypass this. If we don't, I have |
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471 | seen some data parameters get the wrong relocation address. |
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472 | If I link two versions with and without this section bypassed |
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473 | and then do a binary comparison, the addresses which are |
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474 | different can be looked up in the map. The case in which |
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475 | this section has been bypassed has addresses which correspond |
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476 | to values I can find in the map. */ |
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477 | *addendp -= sym->n_value; |
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478 | #endif |
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479 | } |
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480 | |||
481 | #ifndef COFF_WITH_PE |
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482 | /* If the output symbol is common (in which case this must be a |
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483 | relocatable link), we need to add in the final size of the |
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484 | common symbol. */ |
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485 | if (h != NULL && h->root.type == bfd_link_hash_common) |
||
486 | *addendp += h->root.u.c.size; |
||
487 | #endif |
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488 | |||
489 | #ifdef COFF_WITH_PE |
||
490 | if (howto->pc_relative) |
||
491 | { |
||
492 | *addendp -= 4; |
||
493 | |||
494 | /* If the symbol is defined, then the generic code is going to |
||
495 | add back the symbol value in order to cancel out an |
||
496 | adjustment it made to the addend. However, we set the addend |
||
497 | to 0 at the start of this function. We need to adjust here, |
||
498 | to avoid the adjustment the generic code will make. FIXME: |
||
499 | This is getting a bit hackish. */ |
||
500 | if (sym != NULL && sym->n_scnum != 0) |
||
501 | *addendp -= sym->n_value; |
||
502 | } |
||
503 | |||
504 | if (rel->r_type == R_IMAGEBASE |
||
505 | && (bfd_get_flavour(sec->output_section->owner) |
||
506 | == bfd_target_coff_flavour)) |
||
507 | { |
||
508 | *addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase; |
||
509 | } |
||
510 | |||
511 | BFD_ASSERT (sym != NULL); |
||
512 | if (rel->r_type == R_SECREL32 && sym != NULL) |
||
513 | { |
||
514 | bfd_vma osect_vma; |
||
515 | |||
516 | if (h && (h->root.type == bfd_link_hash_defined |
||
517 | || h->root.type == bfd_link_hash_defweak)) |
||
518 | osect_vma = h->root.u.def.section->output_section->vma; |
||
519 | else |
||
520 | { |
||
521 | asection *s; |
||
522 | int i; |
||
523 | |||
524 | /* Sigh, the only way to get the section to offset against |
||
525 | is to find it the hard way. */ |
||
526 | |||
527 | for (s = abfd->sections, i = 1; i < sym->n_scnum; i++) |
||
528 | s = s->next; |
||
529 | |||
530 | osect_vma = s->output_section->vma; |
||
531 | } |
||
532 | |||
533 | *addendp -= osect_vma; |
||
534 | } |
||
535 | #endif |
||
536 | |||
537 | return howto; |
||
538 | } |
||
539 | |||
540 | #define coff_bfd_reloc_type_lookup coff_i386_reloc_type_lookup |
||
541 | #define coff_bfd_reloc_name_lookup coff_i386_reloc_name_lookup |
||
542 | |||
543 | static reloc_howto_type * |
||
544 | coff_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
||
545 | bfd_reloc_code_real_type code) |
||
546 | { |
||
547 | switch (code) |
||
548 | { |
||
549 | case BFD_RELOC_RVA: |
||
550 | return howto_table + R_IMAGEBASE; |
||
551 | case BFD_RELOC_32: |
||
552 | return howto_table + R_DIR32; |
||
553 | case BFD_RELOC_32_PCREL: |
||
554 | return howto_table + R_PCRLONG; |
||
555 | case BFD_RELOC_16: |
||
556 | return howto_table + R_RELWORD; |
||
557 | case BFD_RELOC_16_PCREL: |
||
558 | return howto_table + R_PCRWORD; |
||
559 | case BFD_RELOC_8: |
||
560 | return howto_table + R_RELBYTE; |
||
561 | case BFD_RELOC_8_PCREL: |
||
562 | return howto_table + R_PCRBYTE; |
||
563 | #ifdef COFF_WITH_PE |
||
564 | case BFD_RELOC_32_SECREL: |
||
565 | return howto_table + R_SECREL32; |
||
566 | #endif |
||
567 | default: |
||
568 | BFD_FAIL (); |
||
569 | return 0; |
||
570 | } |
||
571 | } |
||
572 | |||
573 | static reloc_howto_type * |
||
574 | coff_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
||
575 | const char *r_name) |
||
576 | { |
||
577 | unsigned int i; |
||
578 | |||
579 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) |
||
580 | if (howto_table[i].name != NULL |
||
581 | && strcasecmp (howto_table[i].name, r_name) == 0) |
||
582 | return &howto_table[i]; |
||
583 | |||
584 | return NULL; |
||
585 | } |
||
586 | |||
587 | #define coff_rtype_to_howto coff_i386_rtype_to_howto |
||
588 | |||
589 | #ifdef TARGET_UNDERSCORE |
||
590 | |||
591 | /* If i386 gcc uses underscores for symbol names, then it does not use |
||
592 | a leading dot for local labels, so if TARGET_UNDERSCORE is defined |
||
593 | we treat all symbols starting with L as local. */ |
||
594 | |||
595 | static bfd_boolean |
||
596 | coff_i386_is_local_label_name (bfd *abfd, const char *name) |
||
597 | { |
||
598 | if (name[0] == 'L') |
||
599 | return TRUE; |
||
600 | |||
601 | return _bfd_coff_is_local_label_name (abfd, name); |
||
602 | } |
||
603 | |||
604 | #define coff_bfd_is_local_label_name coff_i386_is_local_label_name |
||
605 | |||
606 | #endif /* TARGET_UNDERSCORE */ |
||
607 | |||
608 | #include "coffcode.h" |
||
609 | |||
610 | #define _bfd_generic_find_nearest_line_discriminator \ |
||
611 | coff_find_nearest_line_discriminator |
||
612 | |||
613 | const bfd_target |
||
614 | #ifdef TARGET_SYM |
||
615 | TARGET_SYM = |
||
616 | #else |
||
617 | i386coff_vec = |
||
618 | #endif |
||
619 | { |
||
620 | #ifdef TARGET_NAME |
||
621 | TARGET_NAME, |
||
622 | #else |
||
623 | "coff-i386", /* name */ |
||
624 | #endif |
||
625 | bfd_target_coff_flavour, |
||
626 | BFD_ENDIAN_LITTLE, /* data byte order is little */ |
||
627 | BFD_ENDIAN_LITTLE, /* header byte order is little */ |
||
628 | |||
629 | (HAS_RELOC | EXEC_P | /* object flags */ |
||
630 | HAS_LINENO | HAS_DEBUG | |
||
631 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS ), |
||
632 | |||
633 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */ |
||
634 | #ifdef COFF_WITH_PE |
||
635 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING |
||
636 | #endif |
||
637 | | SEC_CODE | SEC_DATA | SEC_EXCLUDE ), |
||
638 | |||
639 | #ifdef TARGET_UNDERSCORE |
||
640 | TARGET_UNDERSCORE, /* leading underscore */ |
||
641 | #else |
||
642 | 0, /* leading underscore */ |
||
643 | #endif |
||
644 | '/', /* ar_pad_char */ |
||
645 | 15, /* ar_max_namelen */ |
||
646 | 0, /* match priority. */ |
||
647 | |||
648 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
||
649 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
||
650 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ |
||
651 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
||
652 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
||
653 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ |
||
654 | |||
655 | /* Note that we allow an object file to be treated as a core file as well. */ |
||
656 | /* bfd_check_format */ |
||
657 | #ifdef COFF_CHECK_FORMAT |
||
658 | {_bfd_dummy_target, COFF_CHECK_FORMAT, |
||
659 | bfd_generic_archive_p, COFF_CHECK_FORMAT}, |
||
660 | #else |
||
661 | {_bfd_dummy_target, coff_object_p, bfd_generic_archive_p, coff_object_p}, |
||
662 | #endif |
||
663 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ |
||
664 | bfd_false}, |
||
665 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ |
||
666 | _bfd_write_archive_contents, bfd_false}, |
||
667 | |||
668 | BFD_JUMP_TABLE_GENERIC (coff), |
||
669 | BFD_JUMP_TABLE_COPY (coff), |
||
670 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
||
671 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
||
672 | BFD_JUMP_TABLE_SYMBOLS (coff), |
||
673 | BFD_JUMP_TABLE_RELOCS (coff), |
||
674 | BFD_JUMP_TABLE_WRITE (coff), |
||
675 | BFD_JUMP_TABLE_LINK (coff), |
||
676 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
||
677 | |||
678 | NULL, |
||
679 | |||
680 | COFF_SWAP_TABLE |
||
681 | };>>>><>><> |