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5197 | serge | 1 | /* Support for the generic parts of PE/PEI, for BFD. |
6324 | serge | 2 | Copyright (C) 1995-2015 Free Software Foundation, Inc. |
5197 | serge | 3 | Written by Cygnus Solutions. |
4 | |||
5 | This file is part of BFD, the Binary File Descriptor library. |
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6 | |||
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 3 of the License, or |
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10 | (at your option) any later version. |
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11 | |||
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 | |||
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., 51 Franklin Street - Fifth Floor, Boston, |
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20 | MA 02110-1301, USA. */ |
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21 | |||
22 | |||
23 | /* Most of this hacked by Steve Chamberlain, |
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24 | sac@cygnus.com |
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25 | |||
26 | PE/PEI rearrangement (and code added): Donn Terry |
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27 | Softway Systems, Inc. */ |
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28 | |||
29 | /* Hey look, some documentation [and in a place you expect to find it]! |
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30 | |||
31 | The main reference for the pei format is "Microsoft Portable Executable |
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32 | and Common Object File Format Specification 4.1". Get it if you need to |
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33 | do some serious hacking on this code. |
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34 | |||
35 | Another reference: |
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36 | "Peering Inside the PE: A Tour of the Win32 Portable Executable |
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37 | File Format", MSJ 1994, Volume 9. |
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38 | |||
39 | The *sole* difference between the pe format and the pei format is that the |
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40 | latter has an MSDOS 2.0 .exe header on the front that prints the message |
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41 | "This app must be run under Windows." (or some such). |
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42 | (FIXME: Whether that statement is *really* true or not is unknown. |
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43 | Are there more subtle differences between pe and pei formats? |
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44 | For now assume there aren't. If you find one, then for God sakes |
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45 | document it here!) |
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46 | |||
47 | The Microsoft docs use the word "image" instead of "executable" because |
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48 | the former can also refer to a DLL (shared library). Confusion can arise |
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49 | because the `i' in `pei' also refers to "image". The `pe' format can |
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50 | also create images (i.e. executables), it's just that to run on a win32 |
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51 | system you need to use the pei format. |
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52 | |||
53 | FIXME: Please add more docs here so the next poor fool that has to hack |
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54 | on this code has a chance of getting something accomplished without |
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55 | wasting too much time. */ |
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56 | |||
57 | #include "libpei.h" |
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58 | |||
59 | static bfd_boolean (*pe_saved_coff_bfd_print_private_bfd_data) (bfd *, void *) = |
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60 | #ifndef coff_bfd_print_private_bfd_data |
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61 | NULL; |
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62 | #else |
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63 | coff_bfd_print_private_bfd_data; |
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64 | #undef coff_bfd_print_private_bfd_data |
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65 | #endif |
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66 | |||
67 | static bfd_boolean pe_print_private_bfd_data (bfd *, void *); |
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68 | #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data |
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69 | |||
70 | static bfd_boolean (*pe_saved_coff_bfd_copy_private_bfd_data) (bfd *, bfd *) = |
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71 | #ifndef coff_bfd_copy_private_bfd_data |
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72 | NULL; |
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73 | #else |
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74 | coff_bfd_copy_private_bfd_data; |
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75 | #undef coff_bfd_copy_private_bfd_data |
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76 | #endif |
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77 | |||
78 | static bfd_boolean pe_bfd_copy_private_bfd_data (bfd *, bfd *); |
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79 | #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data |
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80 | |||
81 | #define coff_mkobject pe_mkobject |
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82 | #define coff_mkobject_hook pe_mkobject_hook |
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83 | |||
84 | #ifdef COFF_IMAGE_WITH_PE |
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85 | /* This structure contains static variables used by the ILF code. */ |
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86 | typedef asection * asection_ptr; |
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87 | |||
88 | typedef struct |
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89 | { |
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90 | bfd * abfd; |
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91 | bfd_byte * data; |
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92 | struct bfd_in_memory * bim; |
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93 | unsigned short magic; |
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94 | |||
95 | arelent * reltab; |
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96 | unsigned int relcount; |
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97 | |||
98 | coff_symbol_type * sym_cache; |
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99 | coff_symbol_type * sym_ptr; |
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100 | unsigned int sym_index; |
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101 | |||
102 | unsigned int * sym_table; |
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103 | unsigned int * table_ptr; |
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104 | |||
105 | combined_entry_type * native_syms; |
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106 | combined_entry_type * native_ptr; |
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107 | |||
108 | coff_symbol_type ** sym_ptr_table; |
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109 | coff_symbol_type ** sym_ptr_ptr; |
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110 | |||
111 | unsigned int sec_index; |
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112 | |||
113 | char * string_table; |
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114 | char * string_ptr; |
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115 | char * end_string_ptr; |
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116 | |||
117 | SYMENT * esym_table; |
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118 | SYMENT * esym_ptr; |
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119 | |||
120 | struct internal_reloc * int_reltab; |
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121 | } |
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122 | pe_ILF_vars; |
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123 | #endif /* COFF_IMAGE_WITH_PE */ |
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124 | |||
125 | const bfd_target *coff_real_object_p |
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126 | (bfd *, unsigned, struct internal_filehdr *, struct internal_aouthdr *); |
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127 | |||
128 | #ifndef NO_COFF_RELOCS |
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129 | static void |
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130 | coff_swap_reloc_in (bfd * abfd, void * src, void * dst) |
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131 | { |
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132 | RELOC *reloc_src = (RELOC *) src; |
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133 | struct internal_reloc *reloc_dst = (struct internal_reloc *) dst; |
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134 | |||
135 | reloc_dst->r_vaddr = H_GET_32 (abfd, reloc_src->r_vaddr); |
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136 | reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx); |
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137 | reloc_dst->r_type = H_GET_16 (abfd, reloc_src->r_type); |
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138 | #ifdef SWAP_IN_RELOC_OFFSET |
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139 | reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET (abfd, reloc_src->r_offset); |
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140 | #endif |
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141 | } |
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142 | |||
143 | static unsigned int |
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144 | coff_swap_reloc_out (bfd * abfd, void * src, void * dst) |
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145 | { |
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146 | struct internal_reloc *reloc_src = (struct internal_reloc *) src; |
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147 | struct external_reloc *reloc_dst = (struct external_reloc *) dst; |
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148 | |||
149 | H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr); |
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150 | H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx); |
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151 | H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type); |
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152 | |||
153 | #ifdef SWAP_OUT_RELOC_OFFSET |
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154 | SWAP_OUT_RELOC_OFFSET (abfd, reloc_src->r_offset, reloc_dst->r_offset); |
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155 | #endif |
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156 | #ifdef SWAP_OUT_RELOC_EXTRA |
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157 | SWAP_OUT_RELOC_EXTRA (abfd, reloc_src, reloc_dst); |
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158 | #endif |
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159 | return RELSZ; |
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160 | } |
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161 | #endif /* not NO_COFF_RELOCS */ |
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162 | |||
163 | #ifdef COFF_IMAGE_WITH_PE |
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164 | #undef FILHDR |
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165 | #define FILHDR struct external_PEI_IMAGE_hdr |
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166 | #endif |
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167 | |||
168 | static void |
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169 | coff_swap_filehdr_in (bfd * abfd, void * src, void * dst) |
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170 | { |
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171 | FILHDR *filehdr_src = (FILHDR *) src; |
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172 | struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst; |
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173 | |||
174 | filehdr_dst->f_magic = H_GET_16 (abfd, filehdr_src->f_magic); |
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175 | filehdr_dst->f_nscns = H_GET_16 (abfd, filehdr_src->f_nscns); |
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176 | filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->f_timdat); |
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177 | filehdr_dst->f_nsyms = H_GET_32 (abfd, filehdr_src->f_nsyms); |
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178 | filehdr_dst->f_flags = H_GET_16 (abfd, filehdr_src->f_flags); |
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179 | filehdr_dst->f_symptr = H_GET_32 (abfd, filehdr_src->f_symptr); |
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180 | |||
181 | /* Other people's tools sometimes generate headers with an nsyms but |
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182 | a zero symptr. */ |
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183 | if (filehdr_dst->f_nsyms != 0 && filehdr_dst->f_symptr == 0) |
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184 | { |
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185 | filehdr_dst->f_nsyms = 0; |
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186 | filehdr_dst->f_flags |= F_LSYMS; |
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187 | } |
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188 | |||
189 | filehdr_dst->f_opthdr = H_GET_16 (abfd, filehdr_src-> f_opthdr); |
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190 | } |
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191 | |||
192 | #ifdef COFF_IMAGE_WITH_PE |
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193 | # define coff_swap_filehdr_out _bfd_XXi_only_swap_filehdr_out |
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194 | #elif defined COFF_WITH_pex64 |
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195 | # define coff_swap_filehdr_out _bfd_pex64_only_swap_filehdr_out |
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196 | #elif defined COFF_WITH_pep |
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197 | # define coff_swap_filehdr_out _bfd_pep_only_swap_filehdr_out |
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198 | #else |
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199 | # define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out |
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200 | #endif |
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201 | |||
202 | static void |
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203 | coff_swap_scnhdr_in (bfd * abfd, void * ext, void * in) |
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204 | { |
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205 | SCNHDR *scnhdr_ext = (SCNHDR *) ext; |
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206 | struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in; |
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207 | |||
208 | memcpy (scnhdr_int->s_name, scnhdr_ext->s_name, sizeof (scnhdr_int->s_name)); |
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209 | |||
210 | scnhdr_int->s_vaddr = GET_SCNHDR_VADDR (abfd, scnhdr_ext->s_vaddr); |
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211 | scnhdr_int->s_paddr = GET_SCNHDR_PADDR (abfd, scnhdr_ext->s_paddr); |
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212 | scnhdr_int->s_size = GET_SCNHDR_SIZE (abfd, scnhdr_ext->s_size); |
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213 | scnhdr_int->s_scnptr = GET_SCNHDR_SCNPTR (abfd, scnhdr_ext->s_scnptr); |
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214 | scnhdr_int->s_relptr = GET_SCNHDR_RELPTR (abfd, scnhdr_ext->s_relptr); |
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215 | scnhdr_int->s_lnnoptr = GET_SCNHDR_LNNOPTR (abfd, scnhdr_ext->s_lnnoptr); |
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216 | scnhdr_int->s_flags = H_GET_32 (abfd, scnhdr_ext->s_flags); |
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217 | |||
218 | /* MS handles overflow of line numbers by carrying into the reloc |
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219 | field (it appears). Since it's supposed to be zero for PE |
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220 | *IMAGE* format, that's safe. This is still a bit iffy. */ |
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221 | #ifdef COFF_IMAGE_WITH_PE |
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222 | scnhdr_int->s_nlnno = (H_GET_16 (abfd, scnhdr_ext->s_nlnno) |
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223 | + (H_GET_16 (abfd, scnhdr_ext->s_nreloc) << 16)); |
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224 | scnhdr_int->s_nreloc = 0; |
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225 | #else |
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226 | scnhdr_int->s_nreloc = H_GET_16 (abfd, scnhdr_ext->s_nreloc); |
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227 | scnhdr_int->s_nlnno = H_GET_16 (abfd, scnhdr_ext->s_nlnno); |
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228 | #endif |
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229 | |||
230 | if (scnhdr_int->s_vaddr != 0) |
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231 | { |
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232 | scnhdr_int->s_vaddr += pe_data (abfd)->pe_opthdr.ImageBase; |
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233 | /* Do not cut upper 32-bits for 64-bit vma. */ |
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234 | #ifndef COFF_WITH_pex64 |
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235 | scnhdr_int->s_vaddr &= 0xffffffff; |
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236 | #endif |
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237 | } |
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238 | |||
239 | #ifndef COFF_NO_HACK_SCNHDR_SIZE |
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240 | /* If this section holds uninitialized data and is from an object file |
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241 | or from an executable image that has not initialized the field, |
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242 | or if the image is an executable file and the physical size is padded, |
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243 | use the virtual size (stored in s_paddr) instead. */ |
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244 | if (scnhdr_int->s_paddr > 0 |
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245 | && (((scnhdr_int->s_flags & IMAGE_SCN_CNT_UNINITIALIZED_DATA) != 0 |
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246 | && (! bfd_pei_p (abfd) || scnhdr_int->s_size == 0)) |
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247 | || (bfd_pei_p (abfd) && (scnhdr_int->s_size > scnhdr_int->s_paddr)))) |
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248 | /* This code used to set scnhdr_int->s_paddr to 0. However, |
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249 | coff_set_alignment_hook stores s_paddr in virt_size, which |
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250 | only works if it correctly holds the virtual size of the |
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251 | section. */ |
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252 | scnhdr_int->s_size = scnhdr_int->s_paddr; |
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253 | #endif |
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254 | } |
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255 | |||
256 | static bfd_boolean |
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257 | pe_mkobject (bfd * abfd) |
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258 | { |
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259 | pe_data_type *pe; |
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260 | bfd_size_type amt = sizeof (pe_data_type); |
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261 | |||
262 | abfd->tdata.pe_obj_data = (struct pe_tdata *) bfd_zalloc (abfd, amt); |
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263 | |||
264 | if (abfd->tdata.pe_obj_data == 0) |
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265 | return FALSE; |
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266 | |||
267 | pe = pe_data (abfd); |
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268 | |||
269 | pe->coff.pe = 1; |
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270 | |||
271 | /* in_reloc_p is architecture dependent. */ |
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272 | pe->in_reloc_p = in_reloc_p; |
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273 | |||
6324 | serge | 274 | memset (& pe->pe_opthdr, 0, sizeof pe->pe_opthdr); |
5197 | serge | 275 | return TRUE; |
276 | } |
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277 | |||
278 | /* Create the COFF backend specific information. */ |
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279 | |||
280 | static void * |
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281 | pe_mkobject_hook (bfd * abfd, |
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282 | void * filehdr, |
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283 | void * aouthdr ATTRIBUTE_UNUSED) |
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284 | { |
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285 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
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286 | pe_data_type *pe; |
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287 | |||
288 | if (! pe_mkobject (abfd)) |
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289 | return NULL; |
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290 | |||
291 | pe = pe_data (abfd); |
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292 | pe->coff.sym_filepos = internal_f->f_symptr; |
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293 | /* These members communicate important constants about the symbol |
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294 | table to GDB's symbol-reading code. These `constants' |
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295 | unfortunately vary among coff implementations... */ |
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296 | pe->coff.local_n_btmask = N_BTMASK; |
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297 | pe->coff.local_n_btshft = N_BTSHFT; |
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298 | pe->coff.local_n_tmask = N_TMASK; |
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299 | pe->coff.local_n_tshift = N_TSHIFT; |
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300 | pe->coff.local_symesz = SYMESZ; |
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301 | pe->coff.local_auxesz = AUXESZ; |
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302 | pe->coff.local_linesz = LINESZ; |
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303 | |||
304 | pe->coff.timestamp = internal_f->f_timdat; |
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305 | |||
306 | obj_raw_syment_count (abfd) = |
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307 | obj_conv_table_size (abfd) = |
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308 | internal_f->f_nsyms; |
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309 | |||
310 | pe->real_flags = internal_f->f_flags; |
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311 | |||
312 | if ((internal_f->f_flags & F_DLL) != 0) |
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313 | pe->dll = 1; |
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314 | |||
315 | if ((internal_f->f_flags & IMAGE_FILE_DEBUG_STRIPPED) == 0) |
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316 | abfd->flags |= HAS_DEBUG; |
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317 | |||
318 | #ifdef COFF_IMAGE_WITH_PE |
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319 | if (aouthdr) |
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320 | pe->pe_opthdr = ((struct internal_aouthdr *) aouthdr)->pe; |
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321 | #endif |
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322 | |||
323 | #ifdef ARM |
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324 | if (! _bfd_coff_arm_set_private_flags (abfd, internal_f->f_flags)) |
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325 | coff_data (abfd) ->flags = 0; |
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326 | #endif |
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327 | |||
328 | return (void *) pe; |
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329 | } |
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330 | |||
331 | static bfd_boolean |
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332 | pe_print_private_bfd_data (bfd *abfd, void * vfile) |
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333 | { |
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334 | FILE *file = (FILE *) vfile; |
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335 | |||
336 | if (!_bfd_XX_print_private_bfd_data_common (abfd, vfile)) |
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337 | return FALSE; |
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338 | |||
339 | if (pe_saved_coff_bfd_print_private_bfd_data == NULL) |
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340 | return TRUE; |
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341 | |||
342 | fputc ('\n', file); |
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343 | |||
344 | return pe_saved_coff_bfd_print_private_bfd_data (abfd, vfile); |
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345 | } |
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346 | |||
347 | /* Copy any private info we understand from the input bfd |
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348 | to the output bfd. */ |
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349 | |||
350 | static bfd_boolean |
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351 | pe_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
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352 | { |
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353 | /* PR binutils/716: Copy the large address aware flag. |
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354 | XXX: Should we be copying other flags or other fields in the pe_data() |
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355 | structure ? */ |
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356 | if (pe_data (obfd) != NULL |
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357 | && pe_data (ibfd) != NULL |
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358 | && pe_data (ibfd)->real_flags & IMAGE_FILE_LARGE_ADDRESS_AWARE) |
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359 | pe_data (obfd)->real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE; |
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360 | |||
361 | if (!_bfd_XX_bfd_copy_private_bfd_data_common (ibfd, obfd)) |
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362 | return FALSE; |
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363 | |||
364 | if (pe_saved_coff_bfd_copy_private_bfd_data) |
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365 | return pe_saved_coff_bfd_copy_private_bfd_data (ibfd, obfd); |
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366 | |||
367 | return TRUE; |
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368 | } |
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369 | |||
370 | #define coff_bfd_copy_private_section_data \ |
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371 | _bfd_XX_bfd_copy_private_section_data |
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372 | |||
373 | #define coff_get_symbol_info _bfd_XX_get_symbol_info |
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374 | |||
375 | #ifdef COFF_IMAGE_WITH_PE |
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376 | |||
377 | /* Code to handle Microsoft's Image Library Format. |
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378 | Also known as LINK6 format. |
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379 | Documentation about this format can be found at: |
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380 | |||
381 | http://msdn.microsoft.com/library/specs/pecoff_section8.htm */ |
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382 | |||
383 | /* The following constants specify the sizes of the various data |
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384 | structures that we have to create in order to build a bfd describing |
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385 | an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6 |
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386 | and SIZEOF_IDATA7 below is to allow for the possibility that we might |
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387 | need a padding byte in order to ensure 16 bit alignment for the section's |
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388 | contents. |
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389 | |||
390 | The value for SIZEOF_ILF_STRINGS is computed as follows: |
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391 | |||
392 | There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters |
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393 | per symbol for their names (longest section name is .idata$x). |
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394 | |||
395 | There will be two symbols for the imported value, one the symbol name |
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396 | and one with _imp__ prefixed. Allowing for the terminating nul's this |
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397 | is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll). |
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398 | |||
399 | The strings in the string table must start STRING__SIZE_SIZE bytes into |
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400 | the table in order to for the string lookup code in coffgen/coffcode to |
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401 | work. */ |
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402 | #define NUM_ILF_RELOCS 8 |
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403 | #define NUM_ILF_SECTIONS 6 |
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404 | #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS) |
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405 | |||
406 | #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache)) |
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407 | #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table)) |
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408 | #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms)) |
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409 | #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table)) |
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410 | #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table)) |
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411 | #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab)) |
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412 | #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab)) |
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413 | #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \ |
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414 | + 21 + strlen (source_dll) \ |
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415 | + NUM_ILF_SECTIONS * 9 \ |
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416 | + STRING_SIZE_SIZE) |
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417 | #define SIZEOF_IDATA2 (5 * 4) |
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418 | |||
419 | /* For PEx64 idata4 & 5 have thumb size of 8 bytes. */ |
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420 | #ifdef COFF_WITH_pex64 |
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421 | #define SIZEOF_IDATA4 (2 * 4) |
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422 | #define SIZEOF_IDATA5 (2 * 4) |
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423 | #else |
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424 | #define SIZEOF_IDATA4 (1 * 4) |
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425 | #define SIZEOF_IDATA5 (1 * 4) |
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426 | #endif |
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427 | |||
428 | #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1) |
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429 | #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1) |
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430 | #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata)) |
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431 | |||
432 | #define ILF_DATA_SIZE \ |
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433 | + SIZEOF_ILF_SYMS \ |
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434 | + SIZEOF_ILF_SYM_TABLE \ |
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435 | + SIZEOF_ILF_NATIVE_SYMS \ |
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436 | + SIZEOF_ILF_SYM_PTR_TABLE \ |
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437 | + SIZEOF_ILF_EXT_SYMS \ |
||
438 | + SIZEOF_ILF_RELOCS \ |
||
439 | + SIZEOF_ILF_INT_RELOCS \ |
||
440 | + SIZEOF_ILF_STRINGS \ |
||
441 | + SIZEOF_IDATA2 \ |
||
442 | + SIZEOF_IDATA4 \ |
||
443 | + SIZEOF_IDATA5 \ |
||
444 | + SIZEOF_IDATA6 \ |
||
445 | + SIZEOF_IDATA7 \ |
||
446 | + SIZEOF_ILF_SECTIONS \ |
||
447 | + MAX_TEXT_SECTION_SIZE |
||
448 | |||
449 | /* Create an empty relocation against the given symbol. */ |
||
450 | |||
451 | static void |
||
452 | pe_ILF_make_a_symbol_reloc (pe_ILF_vars * vars, |
||
453 | bfd_vma address, |
||
454 | bfd_reloc_code_real_type reloc, |
||
455 | struct bfd_symbol ** sym, |
||
456 | unsigned int sym_index) |
||
457 | { |
||
458 | arelent * entry; |
||
459 | struct internal_reloc * internal; |
||
460 | |||
461 | entry = vars->reltab + vars->relcount; |
||
462 | internal = vars->int_reltab + vars->relcount; |
||
463 | |||
464 | entry->address = address; |
||
465 | entry->addend = 0; |
||
466 | entry->howto = bfd_reloc_type_lookup (vars->abfd, reloc); |
||
467 | entry->sym_ptr_ptr = sym; |
||
468 | |||
469 | internal->r_vaddr = address; |
||
470 | internal->r_symndx = sym_index; |
||
471 | internal->r_type = entry->howto->type; |
||
472 | |||
473 | vars->relcount ++; |
||
474 | |||
475 | BFD_ASSERT (vars->relcount <= NUM_ILF_RELOCS); |
||
476 | } |
||
477 | |||
478 | /* Create an empty relocation against the given section. */ |
||
479 | |||
480 | static void |
||
481 | pe_ILF_make_a_reloc (pe_ILF_vars * vars, |
||
482 | bfd_vma address, |
||
483 | bfd_reloc_code_real_type reloc, |
||
484 | asection_ptr sec) |
||
485 | { |
||
486 | pe_ILF_make_a_symbol_reloc (vars, address, reloc, sec->symbol_ptr_ptr, |
||
487 | coff_section_data (vars->abfd, sec)->i); |
||
488 | } |
||
489 | |||
490 | /* Move the queued relocs into the given section. */ |
||
491 | |||
492 | static void |
||
493 | pe_ILF_save_relocs (pe_ILF_vars * vars, |
||
494 | asection_ptr sec) |
||
495 | { |
||
496 | /* Make sure that there is somewhere to store the internal relocs. */ |
||
497 | if (coff_section_data (vars->abfd, sec) == NULL) |
||
498 | /* We should probably return an error indication here. */ |
||
499 | abort (); |
||
500 | |||
501 | coff_section_data (vars->abfd, sec)->relocs = vars->int_reltab; |
||
502 | coff_section_data (vars->abfd, sec)->keep_relocs = TRUE; |
||
503 | |||
504 | sec->relocation = vars->reltab; |
||
505 | sec->reloc_count = vars->relcount; |
||
506 | sec->flags |= SEC_RELOC; |
||
507 | |||
508 | vars->reltab += vars->relcount; |
||
509 | vars->int_reltab += vars->relcount; |
||
510 | vars->relcount = 0; |
||
511 | |||
512 | BFD_ASSERT ((bfd_byte *) vars->int_reltab < (bfd_byte *) vars->string_table); |
||
513 | } |
||
514 | |||
515 | /* Create a global symbol and add it to the relevant tables. */ |
||
516 | |||
517 | static void |
||
518 | pe_ILF_make_a_symbol (pe_ILF_vars * vars, |
||
519 | const char * prefix, |
||
520 | const char * symbol_name, |
||
521 | asection_ptr section, |
||
522 | flagword extra_flags) |
||
523 | { |
||
524 | coff_symbol_type * sym; |
||
525 | combined_entry_type * ent; |
||
526 | SYMENT * esym; |
||
527 | unsigned short sclass; |
||
528 | |||
529 | if (extra_flags & BSF_LOCAL) |
||
530 | sclass = C_STAT; |
||
531 | else |
||
532 | sclass = C_EXT; |
||
533 | |||
534 | #ifdef THUMBPEMAGIC |
||
535 | if (vars->magic == THUMBPEMAGIC) |
||
536 | { |
||
537 | if (extra_flags & BSF_FUNCTION) |
||
538 | sclass = C_THUMBEXTFUNC; |
||
539 | else if (extra_flags & BSF_LOCAL) |
||
540 | sclass = C_THUMBSTAT; |
||
541 | else |
||
542 | sclass = C_THUMBEXT; |
||
543 | } |
||
544 | #endif |
||
545 | |||
546 | BFD_ASSERT (vars->sym_index < NUM_ILF_SYMS); |
||
547 | |||
548 | sym = vars->sym_ptr; |
||
549 | ent = vars->native_ptr; |
||
550 | esym = vars->esym_ptr; |
||
551 | |||
552 | /* Copy the symbol's name into the string table. */ |
||
553 | sprintf (vars->string_ptr, "%s%s", prefix, symbol_name); |
||
554 | |||
555 | if (section == NULL) |
||
556 | section = bfd_und_section_ptr; |
||
557 | |||
558 | /* Initialise the external symbol. */ |
||
559 | H_PUT_32 (vars->abfd, vars->string_ptr - vars->string_table, |
||
560 | esym->e.e.e_offset); |
||
561 | H_PUT_16 (vars->abfd, section->target_index, esym->e_scnum); |
||
562 | esym->e_sclass[0] = sclass; |
||
563 | |||
564 | /* The following initialisations are unnecessary - the memory is |
||
565 | zero initialised. They are just kept here as reminders. */ |
||
566 | |||
567 | /* Initialise the internal symbol structure. */ |
||
568 | ent->u.syment.n_sclass = sclass; |
||
569 | ent->u.syment.n_scnum = section->target_index; |
||
570 | ent->u.syment._n._n_n._n_offset = (bfd_hostptr_t) sym; |
||
6324 | serge | 571 | ent->is_sym = TRUE; |
5197 | serge | 572 | |
573 | sym->symbol.the_bfd = vars->abfd; |
||
574 | sym->symbol.name = vars->string_ptr; |
||
575 | sym->symbol.flags = BSF_EXPORT | BSF_GLOBAL | extra_flags; |
||
576 | sym->symbol.section = section; |
||
577 | sym->native = ent; |
||
578 | |||
579 | * vars->table_ptr = vars->sym_index; |
||
580 | * vars->sym_ptr_ptr = sym; |
||
581 | |||
582 | /* Adjust pointers for the next symbol. */ |
||
583 | vars->sym_index ++; |
||
584 | vars->sym_ptr ++; |
||
585 | vars->sym_ptr_ptr ++; |
||
586 | vars->table_ptr ++; |
||
587 | vars->native_ptr ++; |
||
588 | vars->esym_ptr ++; |
||
589 | vars->string_ptr += strlen (symbol_name) + strlen (prefix) + 1; |
||
590 | |||
591 | BFD_ASSERT (vars->string_ptr < vars->end_string_ptr); |
||
592 | } |
||
593 | |||
594 | /* Create a section. */ |
||
595 | |||
596 | static asection_ptr |
||
597 | pe_ILF_make_a_section (pe_ILF_vars * vars, |
||
598 | const char * name, |
||
599 | unsigned int size, |
||
600 | flagword extra_flags) |
||
601 | { |
||
602 | asection_ptr sec; |
||
603 | flagword flags; |
||
604 | |||
605 | sec = bfd_make_section_old_way (vars->abfd, name); |
||
606 | if (sec == NULL) |
||
607 | return NULL; |
||
608 | |||
609 | flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_KEEP | SEC_IN_MEMORY; |
||
610 | |||
611 | bfd_set_section_flags (vars->abfd, sec, flags | extra_flags); |
||
612 | |||
613 | (void) bfd_set_section_alignment (vars->abfd, sec, 2); |
||
614 | |||
615 | /* Check that we will not run out of space. */ |
||
616 | BFD_ASSERT (vars->data + size < vars->bim->buffer + vars->bim->size); |
||
617 | |||
618 | /* Set the section size and contents. The actual |
||
619 | contents are filled in by our parent. */ |
||
620 | bfd_set_section_size (vars->abfd, sec, (bfd_size_type) size); |
||
621 | sec->contents = vars->data; |
||
622 | sec->target_index = vars->sec_index ++; |
||
623 | |||
624 | /* Advance data pointer in the vars structure. */ |
||
625 | vars->data += size; |
||
626 | |||
627 | /* Skip the padding byte if it was not needed. |
||
628 | The logic here is that if the string length is odd, |
||
629 | then the entire string length, including the null byte, |
||
630 | is even and so the extra, padding byte, is not needed. */ |
||
631 | if (size & 1) |
||
632 | vars->data --; |
||
633 | |||
6324 | serge | 634 | # if (GCC_VERSION >= 3000) |
635 | /* PR 18758: See note in pe_ILF_buid_a_bfd. We must make sure that we |
||
636 | preserve host alignment requirements. We test 'size' rather than |
||
637 | vars.data as we cannot perform binary arithmetic on pointers. We assume |
||
638 | that vars.data was sufficiently aligned upon entry to this function. |
||
639 | The BFD_ASSERTs in this functions will warn us if we run out of room, |
||
640 | but we should already have enough padding built in to ILF_DATA_SIZE. */ |
||
641 | { |
||
642 | unsigned int alignment = __alignof__ (struct coff_section_tdata); |
||
643 | |||
644 | if (size & (alignment - 1)) |
||
645 | vars->data += alignment - (size & (alignment - 1)); |
||
646 | } |
||
647 | #endif |
||
5197 | serge | 648 | /* Create a coff_section_tdata structure for our use. */ |
649 | sec->used_by_bfd = (struct coff_section_tdata *) vars->data; |
||
650 | vars->data += sizeof (struct coff_section_tdata); |
||
651 | |||
652 | BFD_ASSERT (vars->data <= vars->bim->buffer + vars->bim->size); |
||
653 | |||
654 | /* Create a symbol to refer to this section. */ |
||
655 | pe_ILF_make_a_symbol (vars, "", name, sec, BSF_LOCAL); |
||
656 | |||
657 | /* Cache the index to the symbol in the coff_section_data structure. */ |
||
658 | coff_section_data (vars->abfd, sec)->i = vars->sym_index - 1; |
||
659 | |||
660 | return sec; |
||
661 | } |
||
662 | |||
663 | /* This structure contains the code that goes into the .text section |
||
664 | in order to perform a jump into the DLL lookup table. The entries |
||
665 | in the table are index by the magic number used to represent the |
||
666 | machine type in the PE file. The contents of the data[] arrays in |
||
667 | these entries are stolen from the jtab[] arrays in ld/pe-dll.c. |
||
668 | The SIZE field says how many bytes in the DATA array are actually |
||
669 | used. The OFFSET field says where in the data array the address |
||
670 | of the .idata$5 section should be placed. */ |
||
671 | #define MAX_TEXT_SECTION_SIZE 32 |
||
672 | |||
673 | typedef struct |
||
674 | { |
||
675 | unsigned short magic; |
||
676 | unsigned char data[MAX_TEXT_SECTION_SIZE]; |
||
677 | unsigned int size; |
||
678 | unsigned int offset; |
||
679 | } |
||
680 | jump_table; |
||
681 | |||
682 | static jump_table jtab[] = |
||
683 | { |
||
684 | #ifdef I386MAGIC |
||
685 | { I386MAGIC, |
||
686 | { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 }, |
||
687 | 8, 2 |
||
688 | }, |
||
689 | #endif |
||
690 | |||
691 | #ifdef AMD64MAGIC |
||
692 | { AMD64MAGIC, |
||
693 | { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 }, |
||
694 | 8, 2 |
||
695 | }, |
||
696 | #endif |
||
697 | |||
698 | #ifdef MC68MAGIC |
||
699 | { MC68MAGIC, |
||
700 | { /* XXX fill me in */ }, |
||
701 | 0, 0 |
||
702 | }, |
||
703 | #endif |
||
704 | |||
705 | #ifdef MIPS_ARCH_MAGIC_WINCE |
||
706 | { MIPS_ARCH_MAGIC_WINCE, |
||
707 | { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d, |
||
708 | 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 }, |
||
709 | 16, 0 |
||
710 | }, |
||
711 | #endif |
||
712 | |||
713 | #ifdef SH_ARCH_MAGIC_WINCE |
||
714 | { SH_ARCH_MAGIC_WINCE, |
||
715 | { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, |
||
716 | 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 }, |
||
717 | 12, 8 |
||
718 | }, |
||
719 | #endif |
||
720 | |||
721 | #ifdef ARMPEMAGIC |
||
722 | { ARMPEMAGIC, |
||
723 | { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0, |
||
724 | 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00}, |
||
725 | 12, 8 |
||
726 | }, |
||
727 | #endif |
||
728 | |||
729 | #ifdef THUMBPEMAGIC |
||
730 | { THUMBPEMAGIC, |
||
731 | { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46, |
||
732 | 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 }, |
||
733 | 16, 12 |
||
734 | }, |
||
735 | #endif |
||
736 | { 0, { 0 }, 0, 0 } |
||
737 | }; |
||
738 | |||
739 | #ifndef NUM_ENTRIES |
||
740 | #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0]) |
||
741 | #endif |
||
742 | |||
743 | /* Build a full BFD from the information supplied in a ILF object. */ |
||
744 | |||
745 | static bfd_boolean |
||
746 | pe_ILF_build_a_bfd (bfd * abfd, |
||
747 | unsigned int magic, |
||
748 | char * symbol_name, |
||
749 | char * source_dll, |
||
750 | unsigned int ordinal, |
||
751 | unsigned int types) |
||
752 | { |
||
753 | bfd_byte * ptr; |
||
754 | pe_ILF_vars vars; |
||
755 | struct internal_filehdr internal_f; |
||
756 | unsigned int import_type; |
||
757 | unsigned int import_name_type; |
||
758 | asection_ptr id4, id5, id6 = NULL, text = NULL; |
||
759 | coff_symbol_type ** imp_sym; |
||
760 | unsigned int imp_index; |
||
761 | |||
762 | /* Decode and verify the types field of the ILF structure. */ |
||
763 | import_type = types & 0x3; |
||
764 | import_name_type = (types & 0x1c) >> 2; |
||
765 | |||
766 | switch (import_type) |
||
767 | { |
||
768 | case IMPORT_CODE: |
||
769 | case IMPORT_DATA: |
||
770 | break; |
||
771 | |||
772 | case IMPORT_CONST: |
||
773 | /* XXX code yet to be written. */ |
||
774 | _bfd_error_handler (_("%B: Unhandled import type; %x"), |
||
775 | abfd, import_type); |
||
776 | return FALSE; |
||
777 | |||
778 | default: |
||
779 | _bfd_error_handler (_("%B: Unrecognised import type; %x"), |
||
780 | abfd, import_type); |
||
781 | return FALSE; |
||
782 | } |
||
783 | |||
784 | switch (import_name_type) |
||
785 | { |
||
786 | case IMPORT_ORDINAL: |
||
787 | case IMPORT_NAME: |
||
788 | case IMPORT_NAME_NOPREFIX: |
||
789 | case IMPORT_NAME_UNDECORATE: |
||
790 | break; |
||
791 | |||
792 | default: |
||
793 | _bfd_error_handler (_("%B: Unrecognised import name type; %x"), |
||
794 | abfd, import_name_type); |
||
795 | return FALSE; |
||
796 | } |
||
797 | |||
798 | /* Initialise local variables. |
||
799 | |||
800 | Note these are kept in a structure rather than being |
||
801 | declared as statics since bfd frowns on global variables. |
||
802 | |||
803 | We are going to construct the contents of the BFD in memory, |
||
804 | so allocate all the space that we will need right now. */ |
||
805 | vars.bim |
||
806 | = (struct bfd_in_memory *) bfd_malloc ((bfd_size_type) sizeof (*vars.bim)); |
||
807 | if (vars.bim == NULL) |
||
808 | return FALSE; |
||
809 | |||
810 | ptr = (bfd_byte *) bfd_zmalloc ((bfd_size_type) ILF_DATA_SIZE); |
||
811 | vars.bim->buffer = ptr; |
||
812 | vars.bim->size = ILF_DATA_SIZE; |
||
813 | if (ptr == NULL) |
||
814 | goto error_return; |
||
815 | |||
816 | /* Initialise the pointers to regions of the memory and the |
||
817 | other contents of the pe_ILF_vars structure as well. */ |
||
818 | vars.sym_cache = (coff_symbol_type *) ptr; |
||
819 | vars.sym_ptr = (coff_symbol_type *) ptr; |
||
820 | vars.sym_index = 0; |
||
821 | ptr += SIZEOF_ILF_SYMS; |
||
822 | |||
823 | vars.sym_table = (unsigned int *) ptr; |
||
824 | vars.table_ptr = (unsigned int *) ptr; |
||
825 | ptr += SIZEOF_ILF_SYM_TABLE; |
||
826 | |||
827 | vars.native_syms = (combined_entry_type *) ptr; |
||
828 | vars.native_ptr = (combined_entry_type *) ptr; |
||
829 | ptr += SIZEOF_ILF_NATIVE_SYMS; |
||
830 | |||
831 | vars.sym_ptr_table = (coff_symbol_type **) ptr; |
||
832 | vars.sym_ptr_ptr = (coff_symbol_type **) ptr; |
||
833 | ptr += SIZEOF_ILF_SYM_PTR_TABLE; |
||
834 | |||
835 | vars.esym_table = (SYMENT *) ptr; |
||
836 | vars.esym_ptr = (SYMENT *) ptr; |
||
837 | ptr += SIZEOF_ILF_EXT_SYMS; |
||
838 | |||
839 | vars.reltab = (arelent *) ptr; |
||
840 | vars.relcount = 0; |
||
841 | ptr += SIZEOF_ILF_RELOCS; |
||
842 | |||
843 | vars.int_reltab = (struct internal_reloc *) ptr; |
||
844 | ptr += SIZEOF_ILF_INT_RELOCS; |
||
845 | |||
846 | vars.string_table = (char *) ptr; |
||
847 | vars.string_ptr = (char *) ptr + STRING_SIZE_SIZE; |
||
848 | ptr += SIZEOF_ILF_STRINGS; |
||
849 | vars.end_string_ptr = (char *) ptr; |
||
850 | |||
851 | /* The remaining space in bim->buffer is used |
||
852 | by the pe_ILF_make_a_section() function. */ |
||
6324 | serge | 853 | # if (GCC_VERSION >= 3000) |
854 | /* PR 18758: Make sure that the data area is sufficiently aligned for |
||
855 | pointers on the host. __alignof__ is a gcc extension, hence the test |
||
856 | above. For other compilers we will have to assume that the alignment is |
||
857 | unimportant, or else extra code can be added here and in |
||
858 | pe_ILF_make_a_section. |
||
859 | |||
860 | Note - we cannot test 'ptr' directly as it is illegal to perform binary |
||
861 | arithmetic on pointers, but we know that the strings section is the only |
||
862 | one that might end on an unaligned boundary. */ |
||
863 | { |
||
864 | unsigned int alignment = __alignof__ (char *); |
||
865 | |||
866 | if (SIZEOF_ILF_STRINGS & (alignment - 1)) |
||
867 | ptr += alignment - (SIZEOF_ILF_STRINGS & (alignment - 1)); |
||
868 | } |
||
869 | #endif |
||
870 | |||
5197 | serge | 871 | vars.data = ptr; |
872 | vars.abfd = abfd; |
||
873 | vars.sec_index = 0; |
||
874 | vars.magic = magic; |
||
875 | |||
876 | /* Create the initial .idata$ |
||
877 | [.idata$2: Import Directory Table -- not needed] |
||
878 | .idata$4: Import Lookup Table |
||
879 | .idata$5: Import Address Table |
||
880 | |||
881 | Note we do not create a .idata$3 section as this is |
||
882 | created for us by the linker script. */ |
||
883 | id4 = pe_ILF_make_a_section (& vars, ".idata$4", SIZEOF_IDATA4, 0); |
||
884 | id5 = pe_ILF_make_a_section (& vars, ".idata$5", SIZEOF_IDATA5, 0); |
||
885 | if (id4 == NULL || id5 == NULL) |
||
886 | goto error_return; |
||
887 | |||
888 | /* Fill in the contents of these sections. */ |
||
889 | if (import_name_type == IMPORT_ORDINAL) |
||
890 | { |
||
891 | if (ordinal == 0) |
||
892 | /* XXX - treat as IMPORT_NAME ??? */ |
||
893 | abort (); |
||
894 | |||
895 | #ifdef COFF_WITH_pex64 |
||
896 | ((unsigned int *) id4->contents)[0] = ordinal; |
||
897 | ((unsigned int *) id4->contents)[1] = 0x80000000; |
||
898 | ((unsigned int *) id5->contents)[0] = ordinal; |
||
899 | ((unsigned int *) id5->contents)[1] = 0x80000000; |
||
900 | #else |
||
901 | * (unsigned int *) id4->contents = ordinal | 0x80000000; |
||
902 | * (unsigned int *) id5->contents = ordinal | 0x80000000; |
||
903 | #endif |
||
904 | } |
||
905 | else |
||
906 | { |
||
907 | char * symbol; |
||
908 | unsigned int len; |
||
909 | |||
910 | /* Create .idata$6 - the Hint Name Table. */ |
||
911 | id6 = pe_ILF_make_a_section (& vars, ".idata$6", SIZEOF_IDATA6, 0); |
||
912 | if (id6 == NULL) |
||
913 | goto error_return; |
||
914 | |||
915 | /* If necessary, trim the import symbol name. */ |
||
916 | symbol = symbol_name; |
||
917 | |||
918 | /* As used by MS compiler, '_', '@', and '?' are alternative |
||
919 | forms of USER_LABEL_PREFIX, with '?' for c++ mangled names, |
||
920 | '@' used for fastcall (in C), '_' everywhere else. Only one |
||
921 | of these is used for a symbol. We strip this leading char for |
||
922 | IMPORT_NAME_NOPREFIX and IMPORT_NAME_UNDECORATE as per the |
||
923 | PE COFF 6.0 spec (section 8.3, Import Name Type). */ |
||
924 | |||
925 | if (import_name_type != IMPORT_NAME) |
||
926 | { |
||
927 | char c = symbol[0]; |
||
928 | |||
929 | /* Check that we don't remove for targets with empty |
||
930 | USER_LABEL_PREFIX the leading underscore. */ |
||
931 | if ((c == '_' && abfd->xvec->symbol_leading_char != 0) |
||
932 | || c == '@' || c == '?') |
||
933 | symbol++; |
||
934 | } |
||
935 | |||
936 | len = strlen (symbol); |
||
937 | if (import_name_type == IMPORT_NAME_UNDECORATE) |
||
938 | { |
||
939 | /* Truncate at the first '@'. */ |
||
940 | char *at = strchr (symbol, '@'); |
||
941 | |||
942 | if (at != NULL) |
||
943 | len = at - symbol; |
||
944 | } |
||
945 | |||
946 | id6->contents[0] = ordinal & 0xff; |
||
947 | id6->contents[1] = ordinal >> 8; |
||
948 | |||
949 | memcpy ((char *) id6->contents + 2, symbol, len); |
||
950 | id6->contents[len + 2] = '\0'; |
||
951 | } |
||
952 | |||
953 | if (import_name_type != IMPORT_ORDINAL) |
||
954 | { |
||
955 | pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6); |
||
956 | pe_ILF_save_relocs (&vars, id4); |
||
957 | |||
958 | pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_RVA, id6); |
||
959 | pe_ILF_save_relocs (&vars, id5); |
||
960 | } |
||
961 | |||
962 | /* Create extra sections depending upon the type of import we are dealing with. */ |
||
963 | switch (import_type) |
||
964 | { |
||
965 | int i; |
||
966 | |||
967 | case IMPORT_CODE: |
||
968 | /* Create a .text section. |
||
969 | First we need to look up its contents in the jump table. */ |
||
970 | for (i = NUM_ENTRIES (jtab); i--;) |
||
971 | { |
||
972 | if (jtab[i].size == 0) |
||
973 | continue; |
||
974 | if (jtab[i].magic == magic) |
||
975 | break; |
||
976 | } |
||
977 | /* If we did not find a matching entry something is wrong. */ |
||
978 | if (i < 0) |
||
979 | abort (); |
||
980 | |||
981 | /* Create the .text section. */ |
||
982 | text = pe_ILF_make_a_section (& vars, ".text", jtab[i].size, SEC_CODE); |
||
983 | if (text == NULL) |
||
984 | goto error_return; |
||
985 | |||
986 | /* Copy in the jump code. */ |
||
987 | memcpy (text->contents, jtab[i].data, jtab[i].size); |
||
988 | |||
989 | /* Create an import symbol. */ |
||
990 | pe_ILF_make_a_symbol (& vars, "__imp_", symbol_name, id5, 0); |
||
991 | imp_sym = vars.sym_ptr_ptr - 1; |
||
992 | imp_index = vars.sym_index - 1; |
||
993 | |||
994 | /* Create a reloc for the data in the text section. */ |
||
995 | #ifdef MIPS_ARCH_MAGIC_WINCE |
||
996 | if (magic == MIPS_ARCH_MAGIC_WINCE) |
||
997 | { |
||
998 | pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 0, BFD_RELOC_HI16_S, |
||
999 | (struct bfd_symbol **) imp_sym, |
||
1000 | imp_index); |
||
1001 | pe_ILF_make_a_reloc (&vars, (bfd_vma) 0, BFD_RELOC_LO16, text); |
||
1002 | pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) 4, BFD_RELOC_LO16, |
||
1003 | (struct bfd_symbol **) imp_sym, |
||
1004 | imp_index); |
||
1005 | } |
||
1006 | else |
||
1007 | #endif |
||
6324 | serge | 1008 | #ifdef AMD64MAGIC |
1009 | if (magic == AMD64MAGIC) |
||
1010 | { |
||
1011 | pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) jtab[i].offset, |
||
1012 | BFD_RELOC_32_PCREL, (asymbol **) imp_sym, |
||
1013 | imp_index); |
||
1014 | } |
||
1015 | else |
||
1016 | #endif |
||
5197 | serge | 1017 | pe_ILF_make_a_symbol_reloc (&vars, (bfd_vma) jtab[i].offset, |
1018 | BFD_RELOC_32, (asymbol **) imp_sym, |
||
1019 | imp_index); |
||
1020 | |||
1021 | pe_ILF_save_relocs (& vars, text); |
||
1022 | break; |
||
1023 | |||
1024 | case IMPORT_DATA: |
||
1025 | break; |
||
1026 | |||
1027 | default: |
||
1028 | /* XXX code not yet written. */ |
||
1029 | abort (); |
||
1030 | } |
||
1031 | |||
1032 | /* Initialise the bfd. */ |
||
1033 | memset (& internal_f, 0, sizeof (internal_f)); |
||
1034 | |||
1035 | internal_f.f_magic = magic; |
||
1036 | internal_f.f_symptr = 0; |
||
1037 | internal_f.f_nsyms = 0; |
||
1038 | internal_f.f_flags = F_AR32WR | F_LNNO; /* XXX is this correct ? */ |
||
1039 | |||
1040 | if ( ! bfd_set_start_address (abfd, (bfd_vma) 0) |
||
1041 | || ! bfd_coff_set_arch_mach_hook (abfd, & internal_f)) |
||
1042 | goto error_return; |
||
1043 | |||
1044 | if (bfd_coff_mkobject_hook (abfd, (void *) & internal_f, NULL) == NULL) |
||
1045 | goto error_return; |
||
1046 | |||
1047 | coff_data (abfd)->pe = 1; |
||
1048 | #ifdef THUMBPEMAGIC |
||
1049 | if (vars.magic == THUMBPEMAGIC) |
||
1050 | /* Stop some linker warnings about thumb code not supporting interworking. */ |
||
1051 | coff_data (abfd)->flags |= F_INTERWORK | F_INTERWORK_SET; |
||
1052 | #endif |
||
1053 | |||
1054 | /* Switch from file contents to memory contents. */ |
||
1055 | bfd_cache_close (abfd); |
||
1056 | |||
1057 | abfd->iostream = (void *) vars.bim; |
||
1058 | abfd->flags |= BFD_IN_MEMORY /* | HAS_LOCALS */; |
||
1059 | abfd->iovec = &_bfd_memory_iovec; |
||
1060 | abfd->where = 0; |
||
1061 | abfd->origin = 0; |
||
1062 | obj_sym_filepos (abfd) = 0; |
||
1063 | |||
1064 | /* Now create a symbol describing the imported value. */ |
||
1065 | switch (import_type) |
||
1066 | { |
||
1067 | case IMPORT_CODE: |
||
1068 | pe_ILF_make_a_symbol (& vars, "", symbol_name, text, |
||
1069 | BSF_NOT_AT_END | BSF_FUNCTION); |
||
1070 | |||
1071 | /* Create an import symbol for the DLL, without the |
||
1072 | .dll suffix. */ |
||
1073 | ptr = (bfd_byte *) strrchr (source_dll, '.'); |
||
1074 | if (ptr) |
||
1075 | * ptr = 0; |
||
1076 | pe_ILF_make_a_symbol (& vars, "__IMPORT_DESCRIPTOR_", source_dll, NULL, 0); |
||
1077 | if (ptr) |
||
1078 | * ptr = '.'; |
||
1079 | break; |
||
1080 | |||
1081 | case IMPORT_DATA: |
||
1082 | /* Nothing to do here. */ |
||
1083 | break; |
||
1084 | |||
1085 | default: |
||
1086 | /* XXX code not yet written. */ |
||
1087 | abort (); |
||
1088 | } |
||
1089 | |||
1090 | /* Point the bfd at the symbol table. */ |
||
1091 | obj_symbols (abfd) = vars.sym_cache; |
||
1092 | bfd_get_symcount (abfd) = vars.sym_index; |
||
1093 | |||
1094 | obj_raw_syments (abfd) = vars.native_syms; |
||
1095 | obj_raw_syment_count (abfd) = vars.sym_index; |
||
1096 | |||
1097 | obj_coff_external_syms (abfd) = (void *) vars.esym_table; |
||
1098 | obj_coff_keep_syms (abfd) = TRUE; |
||
1099 | |||
1100 | obj_convert (abfd) = vars.sym_table; |
||
1101 | obj_conv_table_size (abfd) = vars.sym_index; |
||
1102 | |||
1103 | obj_coff_strings (abfd) = vars.string_table; |
||
1104 | obj_coff_keep_strings (abfd) = TRUE; |
||
1105 | |||
1106 | abfd->flags |= HAS_SYMS; |
||
1107 | |||
1108 | return TRUE; |
||
1109 | |||
1110 | error_return: |
||
1111 | if (vars.bim->buffer != NULL) |
||
1112 | free (vars.bim->buffer); |
||
1113 | free (vars.bim); |
||
1114 | return FALSE; |
||
1115 | } |
||
1116 | |||
1117 | /* We have detected a Image Library Format archive element. |
||
1118 | Decode the element and return the appropriate target. */ |
||
1119 | |||
1120 | static const bfd_target * |
||
1121 | pe_ILF_object_p (bfd * abfd) |
||
1122 | { |
||
6324 | serge | 1123 | bfd_byte buffer[14]; |
5197 | serge | 1124 | bfd_byte * ptr; |
1125 | char * symbol_name; |
||
1126 | char * source_dll; |
||
1127 | unsigned int machine; |
||
1128 | bfd_size_type size; |
||
1129 | unsigned int ordinal; |
||
1130 | unsigned int types; |
||
1131 | unsigned int magic; |
||
1132 | |||
6324 | serge | 1133 | /* Upon entry the first six bytes of the ILF header have |
5197 | serge | 1134 | already been read. Now read the rest of the header. */ |
6324 | serge | 1135 | if (bfd_bread (buffer, (bfd_size_type) 14, abfd) != 14) |
5197 | serge | 1136 | return NULL; |
1137 | |||
1138 | ptr = buffer; |
||
1139 | |||
1140 | machine = H_GET_16 (abfd, ptr); |
||
1141 | ptr += 2; |
||
1142 | |||
1143 | /* Check that the machine type is recognised. */ |
||
1144 | magic = 0; |
||
1145 | |||
1146 | switch (machine) |
||
1147 | { |
||
1148 | case IMAGE_FILE_MACHINE_UNKNOWN: |
||
1149 | case IMAGE_FILE_MACHINE_ALPHA: |
||
1150 | case IMAGE_FILE_MACHINE_ALPHA64: |
||
1151 | case IMAGE_FILE_MACHINE_IA64: |
||
1152 | break; |
||
1153 | |||
1154 | case IMAGE_FILE_MACHINE_I386: |
||
1155 | #ifdef I386MAGIC |
||
1156 | magic = I386MAGIC; |
||
1157 | #endif |
||
1158 | break; |
||
1159 | |||
1160 | case IMAGE_FILE_MACHINE_AMD64: |
||
1161 | #ifdef AMD64MAGIC |
||
1162 | magic = AMD64MAGIC; |
||
1163 | #endif |
||
1164 | break; |
||
1165 | |||
1166 | case IMAGE_FILE_MACHINE_M68K: |
||
1167 | #ifdef MC68AGIC |
||
1168 | magic = MC68MAGIC; |
||
1169 | #endif |
||
1170 | break; |
||
1171 | |||
1172 | case IMAGE_FILE_MACHINE_R3000: |
||
1173 | case IMAGE_FILE_MACHINE_R4000: |
||
1174 | case IMAGE_FILE_MACHINE_R10000: |
||
1175 | |||
1176 | case IMAGE_FILE_MACHINE_MIPS16: |
||
1177 | case IMAGE_FILE_MACHINE_MIPSFPU: |
||
1178 | case IMAGE_FILE_MACHINE_MIPSFPU16: |
||
1179 | #ifdef MIPS_ARCH_MAGIC_WINCE |
||
1180 | magic = MIPS_ARCH_MAGIC_WINCE; |
||
1181 | #endif |
||
1182 | break; |
||
1183 | |||
1184 | case IMAGE_FILE_MACHINE_SH3: |
||
1185 | case IMAGE_FILE_MACHINE_SH4: |
||
1186 | #ifdef SH_ARCH_MAGIC_WINCE |
||
1187 | magic = SH_ARCH_MAGIC_WINCE; |
||
1188 | #endif |
||
1189 | break; |
||
1190 | |||
1191 | case IMAGE_FILE_MACHINE_ARM: |
||
1192 | #ifdef ARMPEMAGIC |
||
1193 | magic = ARMPEMAGIC; |
||
1194 | #endif |
||
1195 | break; |
||
1196 | |||
1197 | case IMAGE_FILE_MACHINE_THUMB: |
||
1198 | #ifdef THUMBPEMAGIC |
||
1199 | { |
||
1200 | extern const bfd_target TARGET_LITTLE_SYM; |
||
1201 | |||
1202 | if (abfd->xvec == & TARGET_LITTLE_SYM) |
||
1203 | magic = THUMBPEMAGIC; |
||
1204 | } |
||
1205 | #endif |
||
1206 | break; |
||
1207 | |||
1208 | case IMAGE_FILE_MACHINE_POWERPC: |
||
1209 | /* We no longer support PowerPC. */ |
||
1210 | default: |
||
1211 | _bfd_error_handler |
||
1212 | (_("%B: Unrecognised machine type (0x%x)" |
||
1213 | " in Import Library Format archive"), |
||
1214 | abfd, machine); |
||
1215 | bfd_set_error (bfd_error_malformed_archive); |
||
1216 | |||
1217 | return NULL; |
||
1218 | break; |
||
1219 | } |
||
1220 | |||
1221 | if (magic == 0) |
||
1222 | { |
||
1223 | _bfd_error_handler |
||
1224 | (_("%B: Recognised but unhandled machine type (0x%x)" |
||
1225 | " in Import Library Format archive"), |
||
1226 | abfd, machine); |
||
1227 | bfd_set_error (bfd_error_wrong_format); |
||
1228 | |||
1229 | return NULL; |
||
1230 | } |
||
1231 | |||
1232 | /* We do not bother to check the date. |
||
1233 | date = H_GET_32 (abfd, ptr); */ |
||
1234 | ptr += 4; |
||
1235 | |||
1236 | size = H_GET_32 (abfd, ptr); |
||
1237 | ptr += 4; |
||
1238 | |||
1239 | if (size == 0) |
||
1240 | { |
||
1241 | _bfd_error_handler |
||
1242 | (_("%B: size field is zero in Import Library Format header"), abfd); |
||
1243 | bfd_set_error (bfd_error_malformed_archive); |
||
1244 | |||
1245 | return NULL; |
||
1246 | } |
||
1247 | |||
1248 | ordinal = H_GET_16 (abfd, ptr); |
||
1249 | ptr += 2; |
||
1250 | |||
1251 | types = H_GET_16 (abfd, ptr); |
||
1252 | /* ptr += 2; */ |
||
1253 | |||
1254 | /* Now read in the two strings that follow. */ |
||
1255 | ptr = (bfd_byte *) bfd_alloc (abfd, size); |
||
1256 | if (ptr == NULL) |
||
1257 | return NULL; |
||
1258 | |||
1259 | if (bfd_bread (ptr, size, abfd) != size) |
||
1260 | { |
||
1261 | bfd_release (abfd, ptr); |
||
1262 | return NULL; |
||
1263 | } |
||
1264 | |||
1265 | symbol_name = (char *) ptr; |
||
1266 | source_dll = symbol_name + strlen (symbol_name) + 1; |
||
1267 | |||
1268 | /* Verify that the strings are null terminated. */ |
||
1269 | if (ptr[size - 1] != 0 |
||
1270 | || (bfd_size_type) ((bfd_byte *) source_dll - ptr) >= size) |
||
1271 | { |
||
1272 | _bfd_error_handler |
||
1273 | (_("%B: string not null terminated in ILF object file."), abfd); |
||
1274 | bfd_set_error (bfd_error_malformed_archive); |
||
1275 | bfd_release (abfd, ptr); |
||
1276 | return NULL; |
||
1277 | } |
||
1278 | |||
1279 | /* Now construct the bfd. */ |
||
1280 | if (! pe_ILF_build_a_bfd (abfd, magic, symbol_name, |
||
1281 | source_dll, ordinal, types)) |
||
1282 | { |
||
1283 | bfd_release (abfd, ptr); |
||
1284 | return NULL; |
||
1285 | } |
||
1286 | |||
1287 | return abfd->xvec; |
||
1288 | } |
||
1289 | |||
6324 | serge | 1290 | static void |
1291 | pe_bfd_read_buildid(bfd *abfd) |
||
1292 | { |
||
1293 | pe_data_type *pe = pe_data (abfd); |
||
1294 | struct internal_extra_pe_aouthdr *extra = &pe->pe_opthdr; |
||
1295 | asection *section; |
||
1296 | bfd_byte *data = 0; |
||
1297 | bfd_size_type dataoff; |
||
1298 | unsigned int i; |
||
1299 | |||
1300 | bfd_vma addr = extra->DataDirectory[PE_DEBUG_DATA].VirtualAddress; |
||
1301 | bfd_size_type size = extra->DataDirectory[PE_DEBUG_DATA].Size; |
||
1302 | |||
1303 | if (size == 0) |
||
1304 | return; |
||
1305 | |||
1306 | addr += extra->ImageBase; |
||
1307 | |||
1308 | /* Search for the section containing the DebugDirectory */ |
||
1309 | for (section = abfd->sections; section != NULL; section = section->next) |
||
1310 | { |
||
1311 | if ((addr >= section->vma) && (addr < (section->vma + section->size))) |
||
1312 | break; |
||
1313 | } |
||
1314 | |||
1315 | if (section == NULL) |
||
1316 | { |
||
1317 | return; |
||
1318 | } |
||
1319 | else if (!(section->flags & SEC_HAS_CONTENTS)) |
||
1320 | { |
||
1321 | return; |
||
1322 | } |
||
1323 | |||
1324 | dataoff = addr - section->vma; |
||
1325 | |||
1326 | /* Read the whole section. */ |
||
1327 | if (!bfd_malloc_and_get_section (abfd, section, &data)) |
||
1328 | { |
||
1329 | if (data != NULL) |
||
1330 | free (data); |
||
1331 | return; |
||
1332 | } |
||
1333 | |||
1334 | /* Search for a CodeView entry in the DebugDirectory */ |
||
1335 | for (i = 0; i < size / sizeof (struct external_IMAGE_DEBUG_DIRECTORY); i++) |
||
1336 | { |
||
1337 | struct external_IMAGE_DEBUG_DIRECTORY *ext |
||
1338 | = &((struct external_IMAGE_DEBUG_DIRECTORY *)(data + dataoff))[i]; |
||
1339 | struct internal_IMAGE_DEBUG_DIRECTORY idd; |
||
1340 | |||
1341 | _bfd_XXi_swap_debugdir_in (abfd, ext, &idd); |
||
1342 | |||
1343 | if (idd.Type == PE_IMAGE_DEBUG_TYPE_CODEVIEW) |
||
1344 | { |
||
1345 | char buffer[256 + 1]; |
||
1346 | CODEVIEW_INFO *cvinfo = (CODEVIEW_INFO *) buffer; |
||
1347 | |||
1348 | /* |
||
1349 | The debug entry doesn't have to have to be in a section, in which |
||
1350 | case AddressOfRawData is 0, so always use PointerToRawData. |
||
1351 | */ |
||
1352 | if (_bfd_XXi_slurp_codeview_record (abfd, |
||
1353 | (file_ptr) idd.PointerToRawData, |
||
1354 | idd.SizeOfData, cvinfo)) |
||
1355 | { |
||
1356 | struct bfd_build_id* build_id = bfd_alloc(abfd, |
||
1357 | sizeof(struct bfd_build_id) + cvinfo->SignatureLength); |
||
1358 | if (build_id) |
||
1359 | { |
||
1360 | build_id->size = cvinfo->SignatureLength; |
||
1361 | memcpy(build_id->data, cvinfo->Signature, |
||
1362 | cvinfo->SignatureLength); |
||
1363 | abfd->build_id = build_id; |
||
1364 | } |
||
1365 | } |
||
1366 | break; |
||
1367 | } |
||
1368 | } |
||
1369 | } |
||
1370 | |||
5197 | serge | 1371 | static const bfd_target * |
1372 | pe_bfd_object_p (bfd * abfd) |
||
1373 | { |
||
6324 | serge | 1374 | bfd_byte buffer[6]; |
5197 | serge | 1375 | struct external_PEI_DOS_hdr dos_hdr; |
1376 | struct external_PEI_IMAGE_hdr image_hdr; |
||
1377 | struct internal_filehdr internal_f; |
||
1378 | struct internal_aouthdr internal_a; |
||
1379 | file_ptr opt_hdr_size; |
||
1380 | file_ptr offset; |
||
6324 | serge | 1381 | const bfd_target *result; |
5197 | serge | 1382 | |
1383 | /* Detect if this a Microsoft Import Library Format element. */ |
||
6324 | serge | 1384 | /* First read the beginning of the header. */ |
5197 | serge | 1385 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 |
6324 | serge | 1386 | || bfd_bread (buffer, (bfd_size_type) 6, abfd) != 6) |
5197 | serge | 1387 | { |
1388 | if (bfd_get_error () != bfd_error_system_call) |
||
1389 | bfd_set_error (bfd_error_wrong_format); |
||
1390 | return NULL; |
||
1391 | } |
||
1392 | |||
6324 | serge | 1393 | /* Then check the magic and the version (only 0 is supported). */ |
1394 | if (H_GET_32 (abfd, buffer) == 0xffff0000 |
||
1395 | && H_GET_16 (abfd, buffer + 4) == 0) |
||
5197 | serge | 1396 | return pe_ILF_object_p (abfd); |
1397 | |||
1398 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 |
||
1399 | || bfd_bread (&dos_hdr, (bfd_size_type) sizeof (dos_hdr), abfd) |
||
1400 | != sizeof (dos_hdr)) |
||
1401 | { |
||
1402 | if (bfd_get_error () != bfd_error_system_call) |
||
1403 | bfd_set_error (bfd_error_wrong_format); |
||
1404 | return NULL; |
||
1405 | } |
||
1406 | |||
1407 | /* There are really two magic numbers involved; the magic number |
||
1408 | that says this is a NT executable (PEI) and the magic number that |
||
1409 | determines the architecture. The former is DOSMAGIC, stored in |
||
1410 | the e_magic field. The latter is stored in the f_magic field. |
||
1411 | If the NT magic number isn't valid, the architecture magic number |
||
1412 | could be mimicked by some other field (specifically, the number |
||
1413 | of relocs in section 3). Since this routine can only be called |
||
1414 | correctly for a PEI file, check the e_magic number here, and, if |
||
1415 | it doesn't match, clobber the f_magic number so that we don't get |
||
1416 | a false match. */ |
||
1417 | if (H_GET_16 (abfd, dos_hdr.e_magic) != DOSMAGIC) |
||
1418 | { |
||
1419 | bfd_set_error (bfd_error_wrong_format); |
||
1420 | return NULL; |
||
1421 | } |
||
1422 | |||
1423 | offset = H_GET_32 (abfd, dos_hdr.e_lfanew); |
||
1424 | if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
||
1425 | || (bfd_bread (&image_hdr, (bfd_size_type) sizeof (image_hdr), abfd) |
||
1426 | != sizeof (image_hdr))) |
||
1427 | { |
||
1428 | if (bfd_get_error () != bfd_error_system_call) |
||
1429 | bfd_set_error (bfd_error_wrong_format); |
||
1430 | return NULL; |
||
1431 | } |
||
1432 | |||
1433 | if (H_GET_32 (abfd, image_hdr.nt_signature) != 0x4550) |
||
1434 | { |
||
1435 | bfd_set_error (bfd_error_wrong_format); |
||
1436 | return NULL; |
||
1437 | } |
||
1438 | |||
1439 | /* Swap file header, so that we get the location for calling |
||
1440 | real_object_p. */ |
||
6324 | serge | 1441 | bfd_coff_swap_filehdr_in (abfd, &image_hdr, &internal_f); |
5197 | serge | 1442 | |
1443 | if (! bfd_coff_bad_format_hook (abfd, &internal_f) |
||
1444 | || internal_f.f_opthdr > bfd_coff_aoutsz (abfd)) |
||
1445 | { |
||
1446 | bfd_set_error (bfd_error_wrong_format); |
||
1447 | return NULL; |
||
1448 | } |
||
1449 | |||
1450 | /* Read the optional header, which has variable size. */ |
||
1451 | opt_hdr_size = internal_f.f_opthdr; |
||
1452 | |||
1453 | if (opt_hdr_size != 0) |
||
1454 | { |
||
6324 | serge | 1455 | bfd_size_type amt = opt_hdr_size; |
1456 | void * opthdr; |
||
5197 | serge | 1457 | |
6324 | serge | 1458 | /* PR 17521 file: 230-131433-0.004. */ |
1459 | if (amt < sizeof (PEAOUTHDR)) |
||
1460 | amt = sizeof (PEAOUTHDR); |
||
1461 | |||
1462 | opthdr = bfd_zalloc (abfd, amt); |
||
5197 | serge | 1463 | if (opthdr == NULL) |
1464 | return NULL; |
||
1465 | if (bfd_bread (opthdr, opt_hdr_size, abfd) |
||
1466 | != (bfd_size_type) opt_hdr_size) |
||
1467 | return NULL; |
||
1468 | |||
6324 | serge | 1469 | bfd_set_error (bfd_error_no_error); |
1470 | bfd_coff_swap_aouthdr_in (abfd, opthdr, & internal_a); |
||
1471 | if (bfd_get_error () != bfd_error_no_error) |
||
1472 | return NULL; |
||
5197 | serge | 1473 | } |
1474 | |||
6324 | serge | 1475 | |
1476 | result = coff_real_object_p (abfd, internal_f.f_nscns, &internal_f, |
||
5197 | serge | 1477 | (opt_hdr_size != 0 |
1478 | ? &internal_a |
||
1479 | : (struct internal_aouthdr *) NULL)); |
||
6324 | serge | 1480 | |
1481 | |||
1482 | if (result) |
||
1483 | { |
||
1484 | /* Now the whole header has been processed, see if there is a build-id */ |
||
1485 | pe_bfd_read_buildid(abfd); |
||
1486 | } |
||
1487 | |||
1488 | return result; |
||
5197 | serge | 1489 | } |
1490 | |||
1491 | #define coff_object_p pe_bfd_object_p |
||
1492 | #endif /* COFF_IMAGE_WITH_PE */>>>>=>>>>>=>><> |