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1 | /* ELF support for BFD. |
1 | /* ELF support for BFD. |
2 | Copyright 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001, 2002, |
- | |
3 | 2003, 2006, 2007, 2008, 2010, 2011 Free Software Foundation, Inc. |
2 | Copyright (C) 1991-2015 Free Software Foundation, Inc. |
4 | 3 | ||
5 | Written by Fred Fish @ Cygnus Support, from information published |
4 | Written by Fred Fish @ Cygnus Support, from information published |
6 | in "UNIX System V Release 4, Programmers Guide: ANSI C and |
5 | in "UNIX System V Release 4, Programmers Guide: ANSI C and |
7 | Programming Support Tools". |
6 | Programming Support Tools". |
8 | 7 | ||
9 | This file is part of BFD, the Binary File Descriptor library. |
8 | This file is part of BFD, the Binary File Descriptor library. |
10 | 9 | ||
11 | This program is free software; you can redistribute it and/or modify |
10 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by |
11 | it under the terms of the GNU General Public License as published by |
13 | the Free Software Foundation; either version 3 of the License, or |
12 | the Free Software Foundation; either version 3 of the License, or |
14 | (at your option) any later version. |
13 | (at your option) any later version. |
15 | 14 | ||
16 | This program is distributed in the hope that it will be useful, |
15 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
19 | GNU General Public License for more details. |
18 | GNU General Public License for more details. |
20 | 19 | ||
21 | You should have received a copy of the GNU General Public License |
20 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software |
21 | along with this program; if not, write to the Free Software |
23 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
22 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
24 | MA 02110-1301, USA. */ |
23 | MA 02110-1301, USA. */ |
25 | 24 | ||
26 | /* This file is part of ELF support for BFD, and contains the portions |
25 | /* This file is part of ELF support for BFD, and contains the portions |
27 | that describe how ELF is represented internally in the BFD library. |
26 | that describe how ELF is represented internally in the BFD library. |
28 | I.E. it describes the in-memory representation of ELF. It requires |
27 | I.E. it describes the in-memory representation of ELF. It requires |
29 | the elf-common.h file which contains the portions that are common to |
28 | the elf-common.h file which contains the portions that are common to |
30 | both the internal and external representations. */ |
29 | both the internal and external representations. */ |
31 | 30 | ||
32 | /* NOTE that these structures are not kept in the same order as they appear |
31 | /* NOTE that these structures are not kept in the same order as they appear |
33 | in the object file. In some cases they've been reordered for more optimal |
32 | in the object file. In some cases they've been reordered for more optimal |
34 | packing under various circumstances. */ |
33 | packing under various circumstances. */ |
35 | 34 | ||
36 | #ifndef _ELF_INTERNAL_H |
35 | #ifndef _ELF_INTERNAL_H |
37 | #define _ELF_INTERNAL_H |
36 | #define _ELF_INTERNAL_H |
38 | 37 | ||
39 | /* Special section indices, which may show up in st_shndx fields, among |
38 | /* Special section indices, which may show up in st_shndx fields, among |
40 | other places. */ |
39 | other places. */ |
41 | 40 | ||
42 | #undef SHN_UNDEF |
41 | #undef SHN_UNDEF |
43 | #undef SHN_LORESERVE |
42 | #undef SHN_LORESERVE |
44 | #undef SHN_LOPROC |
43 | #undef SHN_LOPROC |
45 | #undef SHN_HIPROC |
44 | #undef SHN_HIPROC |
46 | #undef SHN_LOOS |
45 | #undef SHN_LOOS |
47 | #undef SHN_HIOS |
46 | #undef SHN_HIOS |
48 | #undef SHN_ABS |
47 | #undef SHN_ABS |
49 | #undef SHN_COMMON |
48 | #undef SHN_COMMON |
50 | #undef SHN_XINDEX |
49 | #undef SHN_XINDEX |
51 | #undef SHN_HIRESERVE |
50 | #undef SHN_HIRESERVE |
52 | #define SHN_UNDEF 0 /* Undefined section reference */ |
51 | #define SHN_UNDEF 0 /* Undefined section reference */ |
53 | #define SHN_LORESERVE (-0x100u) /* Begin range of reserved indices */ |
52 | #define SHN_LORESERVE (-0x100u) /* Begin range of reserved indices */ |
54 | #define SHN_LOPROC (-0x100u) /* Begin range of appl-specific */ |
53 | #define SHN_LOPROC (-0x100u) /* Begin range of appl-specific */ |
55 | #define SHN_HIPROC (-0xE1u) /* End range of appl-specific */ |
54 | #define SHN_HIPROC (-0xE1u) /* End range of appl-specific */ |
56 | #define SHN_LOOS (-0xE0u) /* OS specific semantics, lo */ |
55 | #define SHN_LOOS (-0xE0u) /* OS specific semantics, lo */ |
57 | #define SHN_HIOS (-0xC1u) /* OS specific semantics, hi */ |
56 | #define SHN_HIOS (-0xC1u) /* OS specific semantics, hi */ |
58 | #define SHN_ABS (-0xFu) /* Associated symbol is absolute */ |
57 | #define SHN_ABS (-0xFu) /* Associated symbol is absolute */ |
59 | #define SHN_COMMON (-0xEu) /* Associated symbol is in common */ |
58 | #define SHN_COMMON (-0xEu) /* Associated symbol is in common */ |
60 | #define SHN_XINDEX (-0x1u) /* Section index is held elsewhere */ |
59 | #define SHN_XINDEX (-0x1u) /* Section index is held elsewhere */ |
61 | #define SHN_HIRESERVE (-0x1u) /* End range of reserved indices */ |
60 | #define SHN_HIRESERVE (-0x1u) /* End range of reserved indices */ |
62 | #define SHN_BAD (-0x101u) /* Used internally by bfd */ |
61 | #define SHN_BAD (-0x101u) /* Used internally by bfd */ |
63 | 62 | ||
64 | /* ELF Header */ |
63 | /* ELF Header */ |
65 | 64 | ||
66 | #define EI_NIDENT 16 /* Size of e_ident[] */ |
65 | #define EI_NIDENT 16 /* Size of e_ident[] */ |
67 | 66 | ||
68 | typedef struct elf_internal_ehdr { |
67 | typedef struct elf_internal_ehdr { |
69 | unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ |
68 | unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ |
70 | bfd_vma e_entry; /* Entry point virtual address */ |
69 | bfd_vma e_entry; /* Entry point virtual address */ |
71 | bfd_size_type e_phoff; /* Program header table file offset */ |
70 | bfd_size_type e_phoff; /* Program header table file offset */ |
72 | bfd_size_type e_shoff; /* Section header table file offset */ |
71 | bfd_size_type e_shoff; /* Section header table file offset */ |
73 | unsigned long e_version; /* Identifies object file version */ |
72 | unsigned long e_version; /* Identifies object file version */ |
74 | unsigned long e_flags; /* Processor-specific flags */ |
73 | unsigned long e_flags; /* Processor-specific flags */ |
75 | unsigned short e_type; /* Identifies object file type */ |
74 | unsigned short e_type; /* Identifies object file type */ |
76 | unsigned short e_machine; /* Specifies required architecture */ |
75 | unsigned short e_machine; /* Specifies required architecture */ |
77 | unsigned int e_ehsize; /* ELF header size in bytes */ |
76 | unsigned int e_ehsize; /* ELF header size in bytes */ |
78 | unsigned int e_phentsize; /* Program header table entry size */ |
77 | unsigned int e_phentsize; /* Program header table entry size */ |
79 | unsigned int e_phnum; /* Program header table entry count */ |
78 | unsigned int e_phnum; /* Program header table entry count */ |
80 | unsigned int e_shentsize; /* Section header table entry size */ |
79 | unsigned int e_shentsize; /* Section header table entry size */ |
81 | unsigned int e_shnum; /* Section header table entry count */ |
80 | unsigned int e_shnum; /* Section header table entry count */ |
82 | unsigned int e_shstrndx; /* Section header string table index */ |
81 | unsigned int e_shstrndx; /* Section header string table index */ |
83 | } Elf_Internal_Ehdr; |
82 | } Elf_Internal_Ehdr; |
84 | 83 | ||
85 | /* Program header */ |
84 | /* Program header */ |
86 | 85 | ||
87 | struct elf_internal_phdr { |
86 | struct elf_internal_phdr { |
88 | unsigned long p_type; /* Identifies program segment type */ |
87 | unsigned long p_type; /* Identifies program segment type */ |
89 | unsigned long p_flags; /* Segment flags */ |
88 | unsigned long p_flags; /* Segment flags */ |
90 | bfd_vma p_offset; /* Segment file offset */ |
89 | bfd_vma p_offset; /* Segment file offset */ |
91 | bfd_vma p_vaddr; /* Segment virtual address */ |
90 | bfd_vma p_vaddr; /* Segment virtual address */ |
92 | bfd_vma p_paddr; /* Segment physical address */ |
91 | bfd_vma p_paddr; /* Segment physical address */ |
93 | bfd_vma p_filesz; /* Segment size in file */ |
92 | bfd_vma p_filesz; /* Segment size in file */ |
94 | bfd_vma p_memsz; /* Segment size in memory */ |
93 | bfd_vma p_memsz; /* Segment size in memory */ |
95 | bfd_vma p_align; /* Segment alignment, file & memory */ |
94 | bfd_vma p_align; /* Segment alignment, file & memory */ |
96 | }; |
95 | }; |
97 | 96 | ||
98 | typedef struct elf_internal_phdr Elf_Internal_Phdr; |
97 | typedef struct elf_internal_phdr Elf_Internal_Phdr; |
99 | 98 | ||
100 | /* Section header */ |
99 | /* Section header */ |
101 | 100 | ||
102 | typedef struct elf_internal_shdr { |
101 | typedef struct elf_internal_shdr { |
103 | unsigned int sh_name; /* Section name, index in string tbl */ |
102 | unsigned int sh_name; /* Section name, index in string tbl */ |
104 | unsigned int sh_type; /* Type of section */ |
103 | unsigned int sh_type; /* Type of section */ |
105 | bfd_vma sh_flags; /* Miscellaneous section attributes */ |
104 | bfd_vma sh_flags; /* Miscellaneous section attributes */ |
106 | bfd_vma sh_addr; /* Section virtual addr at execution */ |
105 | bfd_vma sh_addr; /* Section virtual addr at execution */ |
107 | file_ptr sh_offset; /* Section file offset */ |
106 | file_ptr sh_offset; /* Section file offset */ |
108 | bfd_size_type sh_size; /* Size of section in bytes */ |
107 | bfd_size_type sh_size; /* Size of section in bytes */ |
109 | unsigned int sh_link; /* Index of another section */ |
108 | unsigned int sh_link; /* Index of another section */ |
110 | unsigned int sh_info; /* Additional section information */ |
109 | unsigned int sh_info; /* Additional section information */ |
111 | bfd_vma sh_addralign; /* Section alignment */ |
110 | bfd_vma sh_addralign; /* Section alignment */ |
112 | bfd_size_type sh_entsize; /* Entry size if section holds table */ |
111 | bfd_size_type sh_entsize; /* Entry size if section holds table */ |
113 | 112 | ||
114 | /* The internal rep also has some cached info associated with it. */ |
113 | /* The internal rep also has some cached info associated with it. */ |
115 | asection * bfd_section; /* Associated BFD section. */ |
114 | asection * bfd_section; /* Associated BFD section. */ |
116 | unsigned char *contents; /* Section contents. */ |
115 | unsigned char *contents; /* Section contents. */ |
117 | } Elf_Internal_Shdr; |
116 | } Elf_Internal_Shdr; |
- | 117 | ||
- | 118 | /* Compression header */ |
|
- | 119 | ||
- | 120 | typedef struct elf_internal_chdr { |
|
- | 121 | unsigned int ch_type; /* Type of compression */ |
|
- | 122 | bfd_size_type ch_size; /* Size of uncompressed data in bytes */ |
|
- | 123 | bfd_vma ch_addralign; /* Alignment of uncompressed data */ |
|
- | 124 | } Elf_Internal_Chdr; |
|
118 | 125 | ||
119 | /* Symbol table entry */ |
126 | /* Symbol table entry */ |
120 | 127 | ||
121 | struct elf_internal_sym { |
128 | struct elf_internal_sym { |
122 | bfd_vma st_value; /* Value of the symbol */ |
129 | bfd_vma st_value; /* Value of the symbol */ |
123 | bfd_vma st_size; /* Associated symbol size */ |
130 | bfd_vma st_size; /* Associated symbol size */ |
124 | unsigned long st_name; /* Symbol name, index in string tbl */ |
131 | unsigned long st_name; /* Symbol name, index in string tbl */ |
125 | unsigned char st_info; /* Type and binding attributes */ |
132 | unsigned char st_info; /* Type and binding attributes */ |
126 | unsigned char st_other; /* Visibilty, and target specific */ |
133 | unsigned char st_other; /* Visibilty, and target specific */ |
127 | unsigned char st_target_internal; /* Internal-only information */ |
134 | unsigned char st_target_internal; /* Internal-only information */ |
128 | unsigned int st_shndx; /* Associated section index */ |
135 | unsigned int st_shndx; /* Associated section index */ |
129 | }; |
136 | }; |
130 | 137 | ||
131 | typedef struct elf_internal_sym Elf_Internal_Sym; |
138 | typedef struct elf_internal_sym Elf_Internal_Sym; |
132 | 139 | ||
133 | /* Note segments */ |
140 | /* Note segments */ |
134 | 141 | ||
135 | typedef struct elf_internal_note { |
142 | typedef struct elf_internal_note { |
136 | unsigned long namesz; /* Size of entry's owner string */ |
143 | unsigned long namesz; /* Size of entry's owner string */ |
137 | unsigned long descsz; /* Size of the note descriptor */ |
144 | unsigned long descsz; /* Size of the note descriptor */ |
138 | unsigned long type; /* Interpretation of the descriptor */ |
145 | unsigned long type; /* Interpretation of the descriptor */ |
139 | char * namedata; /* Start of the name+desc data */ |
146 | char * namedata; /* Start of the name+desc data */ |
140 | char * descdata; /* Start of the desc data */ |
147 | char * descdata; /* Start of the desc data */ |
141 | bfd_vma descpos; /* File offset of the descdata */ |
148 | bfd_vma descpos; /* File offset of the descdata */ |
142 | } Elf_Internal_Note; |
149 | } Elf_Internal_Note; |
143 | 150 | ||
144 | /* Relocation Entries */ |
151 | /* Relocation Entries */ |
145 | 152 | ||
146 | typedef struct elf_internal_rela { |
153 | typedef struct elf_internal_rela { |
147 | bfd_vma r_offset; /* Location at which to apply the action */ |
154 | bfd_vma r_offset; /* Location at which to apply the action */ |
148 | bfd_vma r_info; /* Index and Type of relocation */ |
155 | bfd_vma r_info; /* Index and Type of relocation */ |
149 | bfd_vma r_addend; /* Constant addend used to compute value */ |
156 | bfd_vma r_addend; /* Constant addend used to compute value */ |
150 | } Elf_Internal_Rela; |
157 | } Elf_Internal_Rela; |
151 | 158 | ||
152 | /* dynamic section structure */ |
159 | /* dynamic section structure */ |
153 | 160 | ||
154 | typedef struct elf_internal_dyn { |
161 | typedef struct elf_internal_dyn { |
155 | /* This needs to support 64-bit values in elf64. */ |
162 | /* This needs to support 64-bit values in elf64. */ |
156 | bfd_vma d_tag; /* entry tag value */ |
163 | bfd_vma d_tag; /* entry tag value */ |
157 | union { |
164 | union { |
158 | /* This needs to support 64-bit values in elf64. */ |
165 | /* This needs to support 64-bit values in elf64. */ |
159 | bfd_vma d_val; |
166 | bfd_vma d_val; |
160 | bfd_vma d_ptr; |
167 | bfd_vma d_ptr; |
161 | } d_un; |
168 | } d_un; |
162 | } Elf_Internal_Dyn; |
169 | } Elf_Internal_Dyn; |
163 | 170 | ||
164 | /* This structure appears in a SHT_GNU_verdef section. */ |
171 | /* This structure appears in a SHT_GNU_verdef section. */ |
165 | 172 | ||
166 | typedef struct elf_internal_verdef { |
173 | typedef struct elf_internal_verdef { |
167 | unsigned short vd_version; /* Version number of structure. */ |
174 | unsigned short vd_version; /* Version number of structure. */ |
168 | unsigned short vd_flags; /* Flags (VER_FLG_*). */ |
175 | unsigned short vd_flags; /* Flags (VER_FLG_*). */ |
169 | unsigned short vd_ndx; /* Version index. */ |
176 | unsigned short vd_ndx; /* Version index. */ |
170 | unsigned short vd_cnt; /* Number of verdaux entries. */ |
177 | unsigned short vd_cnt; /* Number of verdaux entries. */ |
171 | unsigned long vd_hash; /* Hash of name. */ |
178 | unsigned long vd_hash; /* Hash of name. */ |
172 | unsigned long vd_aux; /* Offset to verdaux entries. */ |
179 | unsigned long vd_aux; /* Offset to verdaux entries. */ |
173 | unsigned long vd_next; /* Offset to next verdef. */ |
180 | unsigned long vd_next; /* Offset to next verdef. */ |
174 | 181 | ||
175 | /* These fields are set up when BFD reads in the structure. FIXME: |
182 | /* These fields are set up when BFD reads in the structure. FIXME: |
176 | It would be cleaner to store these in a different structure. */ |
183 | It would be cleaner to store these in a different structure. */ |
177 | bfd *vd_bfd; /* BFD. */ |
184 | bfd *vd_bfd; /* BFD. */ |
178 | const char *vd_nodename; /* Version name. */ |
185 | const char *vd_nodename; /* Version name. */ |
179 | struct elf_internal_verdef *vd_nextdef; /* vd_next as pointer. */ |
186 | struct elf_internal_verdef *vd_nextdef; /* vd_next as pointer. */ |
180 | struct elf_internal_verdaux *vd_auxptr; /* vd_aux as pointer. */ |
187 | struct elf_internal_verdaux *vd_auxptr; /* vd_aux as pointer. */ |
181 | unsigned int vd_exp_refno; /* Used by the linker. */ |
188 | unsigned int vd_exp_refno; /* Used by the linker. */ |
182 | } Elf_Internal_Verdef; |
189 | } Elf_Internal_Verdef; |
183 | 190 | ||
184 | /* This structure appears in a SHT_GNU_verdef section. */ |
191 | /* This structure appears in a SHT_GNU_verdef section. */ |
185 | 192 | ||
186 | typedef struct elf_internal_verdaux { |
193 | typedef struct elf_internal_verdaux { |
187 | unsigned long vda_name; /* String table offset of name. */ |
194 | unsigned long vda_name; /* String table offset of name. */ |
188 | unsigned long vda_next; /* Offset to next verdaux. */ |
195 | unsigned long vda_next; /* Offset to next verdaux. */ |
189 | 196 | ||
190 | /* These fields are set up when BFD reads in the structure. FIXME: |
197 | /* These fields are set up when BFD reads in the structure. FIXME: |
191 | It would be cleaner to store these in a different structure. */ |
198 | It would be cleaner to store these in a different structure. */ |
192 | const char *vda_nodename; /* vda_name as pointer. */ |
199 | const char *vda_nodename; /* vda_name as pointer. */ |
193 | struct elf_internal_verdaux *vda_nextptr; /* vda_next as pointer. */ |
200 | struct elf_internal_verdaux *vda_nextptr; /* vda_next as pointer. */ |
194 | } Elf_Internal_Verdaux; |
201 | } Elf_Internal_Verdaux; |
195 | 202 | ||
196 | /* This structure appears in a SHT_GNU_verneed section. */ |
203 | /* This structure appears in a SHT_GNU_verneed section. */ |
197 | 204 | ||
198 | typedef struct elf_internal_verneed { |
205 | typedef struct elf_internal_verneed { |
199 | unsigned short vn_version; /* Version number of structure. */ |
206 | unsigned short vn_version; /* Version number of structure. */ |
200 | unsigned short vn_cnt; /* Number of vernaux entries. */ |
207 | unsigned short vn_cnt; /* Number of vernaux entries. */ |
201 | unsigned long vn_file; /* String table offset of library name. */ |
208 | unsigned long vn_file; /* String table offset of library name. */ |
202 | unsigned long vn_aux; /* Offset to vernaux entries. */ |
209 | unsigned long vn_aux; /* Offset to vernaux entries. */ |
203 | unsigned long vn_next; /* Offset to next verneed. */ |
210 | unsigned long vn_next; /* Offset to next verneed. */ |
204 | 211 | ||
205 | /* These fields are set up when BFD reads in the structure. FIXME: |
212 | /* These fields are set up when BFD reads in the structure. FIXME: |
206 | It would be cleaner to store these in a different structure. */ |
213 | It would be cleaner to store these in a different structure. */ |
207 | bfd *vn_bfd; /* BFD. */ |
214 | bfd *vn_bfd; /* BFD. */ |
208 | const char *vn_filename; /* vn_file as pointer. */ |
215 | const char *vn_filename; /* vn_file as pointer. */ |
209 | struct elf_internal_vernaux *vn_auxptr; /* vn_aux as pointer. */ |
216 | struct elf_internal_vernaux *vn_auxptr; /* vn_aux as pointer. */ |
210 | struct elf_internal_verneed *vn_nextref; /* vn_nextref as pointer. */ |
217 | struct elf_internal_verneed *vn_nextref; /* vn_nextref as pointer. */ |
211 | } Elf_Internal_Verneed; |
218 | } Elf_Internal_Verneed; |
212 | 219 | ||
213 | /* This structure appears in a SHT_GNU_verneed section. */ |
220 | /* This structure appears in a SHT_GNU_verneed section. */ |
214 | 221 | ||
215 | typedef struct elf_internal_vernaux { |
222 | typedef struct elf_internal_vernaux { |
216 | unsigned long vna_hash; /* Hash of dependency name. */ |
223 | unsigned long vna_hash; /* Hash of dependency name. */ |
217 | unsigned short vna_flags; /* Flags (VER_FLG_*). */ |
224 | unsigned short vna_flags; /* Flags (VER_FLG_*). */ |
218 | unsigned short vna_other; /* Unused. */ |
225 | unsigned short vna_other; /* Unused. */ |
219 | unsigned long vna_name; /* String table offset to version name. */ |
226 | unsigned long vna_name; /* String table offset to version name. */ |
220 | unsigned long vna_next; /* Offset to next vernaux. */ |
227 | unsigned long vna_next; /* Offset to next vernaux. */ |
221 | 228 | ||
222 | /* These fields are set up when BFD reads in the structure. FIXME: |
229 | /* These fields are set up when BFD reads in the structure. FIXME: |
223 | It would be cleaner to store these in a different structure. */ |
230 | It would be cleaner to store these in a different structure. */ |
224 | const char *vna_nodename; /* vna_name as pointer. */ |
231 | const char *vna_nodename; /* vna_name as pointer. */ |
225 | struct elf_internal_vernaux *vna_nextptr; /* vna_next as pointer. */ |
232 | struct elf_internal_vernaux *vna_nextptr; /* vna_next as pointer. */ |
226 | } Elf_Internal_Vernaux; |
233 | } Elf_Internal_Vernaux; |
227 | 234 | ||
228 | /* This structure appears in a SHT_GNU_versym section. This is not a |
235 | /* This structure appears in a SHT_GNU_versym section. This is not a |
229 | standard ELF structure; ELF just uses Elf32_Half. */ |
236 | standard ELF structure; ELF just uses Elf32_Half. */ |
230 | 237 | ||
231 | typedef struct elf_internal_versym { |
238 | typedef struct elf_internal_versym { |
232 | unsigned short vs_vers; |
239 | unsigned short vs_vers; |
233 | } Elf_Internal_Versym; |
240 | } Elf_Internal_Versym; |
234 | 241 | ||
235 | /* Structure for syminfo section. */ |
242 | /* Structure for syminfo section. */ |
236 | typedef struct |
243 | typedef struct |
237 | { |
244 | { |
238 | unsigned short int si_boundto; |
245 | unsigned short int si_boundto; |
239 | unsigned short int si_flags; |
246 | unsigned short int si_flags; |
240 | } Elf_Internal_Syminfo; |
247 | } Elf_Internal_Syminfo; |
241 | 248 | ||
242 | /* This structure appears on the stack and in NT_AUXV core file notes. */ |
249 | /* This structure appears on the stack and in NT_AUXV core file notes. */ |
243 | typedef struct |
250 | typedef struct |
244 | { |
251 | { |
245 | bfd_vma a_type; |
252 | bfd_vma a_type; |
246 | bfd_vma a_val; |
253 | bfd_vma a_val; |
247 | } Elf_Internal_Auxv; |
254 | } Elf_Internal_Auxv; |
248 | 255 | ||
249 | 256 | ||
250 | /* This structure is used to describe how sections should be assigned |
257 | /* This structure is used to describe how sections should be assigned |
251 | to program segments. */ |
258 | to program segments. */ |
252 | 259 | ||
253 | struct elf_segment_map |
260 | struct elf_segment_map |
254 | { |
261 | { |
255 | /* Next program segment. */ |
262 | /* Next program segment. */ |
256 | struct elf_segment_map *next; |
263 | struct elf_segment_map *next; |
257 | /* Program segment type. */ |
264 | /* Program segment type. */ |
258 | unsigned long p_type; |
265 | unsigned long p_type; |
259 | /* Program segment flags. */ |
266 | /* Program segment flags. */ |
260 | unsigned long p_flags; |
267 | unsigned long p_flags; |
261 | /* Program segment physical address. */ |
268 | /* Program segment physical address. */ |
262 | bfd_vma p_paddr; |
269 | bfd_vma p_paddr; |
263 | /* Program segment virtual address offset from section vma. */ |
270 | /* Program segment virtual address offset from section vma. */ |
264 | bfd_vma p_vaddr_offset; |
271 | bfd_vma p_vaddr_offset; |
265 | /* Program segment alignment. */ |
272 | /* Program segment alignment. */ |
266 | bfd_vma p_align; |
273 | bfd_vma p_align; |
267 | /* Segment size in file and memory */ |
274 | /* Segment size in file and memory */ |
268 | bfd_vma p_size; |
275 | bfd_vma p_size; |
269 | /* Required size of filehdr + phdrs, if non-zero */ |
276 | /* Required size of filehdr + phdrs, if non-zero */ |
270 | bfd_vma header_size; |
277 | bfd_vma header_size; |
271 | /* Whether the p_flags field is valid; if not, the flags are based |
278 | /* Whether the p_flags field is valid; if not, the flags are based |
272 | on the section flags. */ |
279 | on the section flags. */ |
273 | unsigned int p_flags_valid : 1; |
280 | unsigned int p_flags_valid : 1; |
274 | /* Whether the p_paddr field is valid; if not, the physical address |
281 | /* Whether the p_paddr field is valid; if not, the physical address |
275 | is based on the section lma values. */ |
282 | is based on the section lma values. */ |
276 | unsigned int p_paddr_valid : 1; |
283 | unsigned int p_paddr_valid : 1; |
277 | /* Whether the p_align field is valid; if not, PT_LOAD segment |
284 | /* Whether the p_align field is valid; if not, PT_LOAD segment |
278 | alignment is based on the default maximum page size. */ |
285 | alignment is based on the default maximum page size. */ |
279 | unsigned int p_align_valid : 1; |
286 | unsigned int p_align_valid : 1; |
280 | /* Whether the p_size field is valid; if not, the size are based |
287 | /* Whether the p_size field is valid; if not, the size are based |
281 | on the section sizes. */ |
288 | on the section sizes. */ |
282 | unsigned int p_size_valid : 1; |
289 | unsigned int p_size_valid : 1; |
283 | /* Whether this segment includes the file header. */ |
290 | /* Whether this segment includes the file header. */ |
284 | unsigned int includes_filehdr : 1; |
291 | unsigned int includes_filehdr : 1; |
285 | /* Whether this segment includes the program headers. */ |
292 | /* Whether this segment includes the program headers. */ |
286 | unsigned int includes_phdrs : 1; |
293 | unsigned int includes_phdrs : 1; |
287 | /* Number of sections (may be 0). */ |
294 | /* Number of sections (may be 0). */ |
288 | unsigned int count; |
295 | unsigned int count; |
289 | /* Sections. Actual number of elements is in count field. */ |
296 | /* Sections. Actual number of elements is in count field. */ |
290 | asection *sections[1]; |
297 | asection *sections[1]; |
291 | }; |
298 | }; |
292 | 299 | ||
293 | /* .tbss is special. It doesn't contribute memory space to normal |
300 | /* .tbss is special. It doesn't contribute memory space to normal |
294 | segments and it doesn't take file space in normal segments. */ |
301 | segments and it doesn't take file space in normal segments. */ |
295 | #define ELF_TBSS_SPECIAL(sec_hdr, segment) \ |
302 | #define ELF_TBSS_SPECIAL(sec_hdr, segment) \ |
296 | (((sec_hdr)->sh_flags & SHF_TLS) != 0 \ |
303 | (((sec_hdr)->sh_flags & SHF_TLS) != 0 \ |
297 | && (sec_hdr)->sh_type == SHT_NOBITS \ |
304 | && (sec_hdr)->sh_type == SHT_NOBITS \ |
298 | && (segment)->p_type != PT_TLS) |
305 | && (segment)->p_type != PT_TLS) |
299 | 306 | ||
300 | #define ELF_SECTION_SIZE(sec_hdr, segment) \ |
307 | #define ELF_SECTION_SIZE(sec_hdr, segment) \ |
301 | (ELF_TBSS_SPECIAL(sec_hdr, segment) ? 0 : (sec_hdr)->sh_size) |
308 | (ELF_TBSS_SPECIAL(sec_hdr, segment) ? 0 : (sec_hdr)->sh_size) |
302 | 309 | ||
303 | /* Decide if the section SEC_HDR is in SEGMENT. If CHECK_VMA, then |
310 | /* Decide if the section SEC_HDR is in SEGMENT. If CHECK_VMA, then |
304 | VMAs are checked for alloc sections. If STRICT, then a zero size |
311 | VMAs are checked for alloc sections. If STRICT, then a zero size |
305 | section won't match at the end of a segment, unless the segment |
312 | section won't match at the end of a segment, unless the segment |
306 | is also zero size. Regardless of STRICT and CHECK_VMA, zero size |
313 | is also zero size. Regardless of STRICT and CHECK_VMA, zero size |
307 | sections won't match at the start or end of PT_DYNAMIC, unless |
314 | sections won't match at the start or end of PT_DYNAMIC, unless |
308 | PT_DYNAMIC is itself zero sized. */ |
315 | PT_DYNAMIC is itself zero sized. */ |
309 | #define ELF_SECTION_IN_SEGMENT_1(sec_hdr, segment, check_vma, strict) \ |
316 | #define ELF_SECTION_IN_SEGMENT_1(sec_hdr, segment, check_vma, strict) \ |
310 | ((/* Only PT_LOAD, PT_GNU_RELRO and PT_TLS segments can contain \ |
317 | ((/* Only PT_LOAD, PT_GNU_RELRO and PT_TLS segments can contain \ |
311 | SHF_TLS sections. */ \ |
318 | SHF_TLS sections. */ \ |
312 | ((((sec_hdr)->sh_flags & SHF_TLS) != 0) \ |
319 | ((((sec_hdr)->sh_flags & SHF_TLS) != 0) \ |
313 | && ((segment)->p_type == PT_TLS \ |
320 | && ((segment)->p_type == PT_TLS \ |
314 | || (segment)->p_type == PT_GNU_RELRO \ |
321 | || (segment)->p_type == PT_GNU_RELRO \ |
315 | || (segment)->p_type == PT_LOAD)) \ |
322 | || (segment)->p_type == PT_LOAD)) \ |
316 | /* PT_TLS segment contains only SHF_TLS sections, PT_PHDR no \ |
323 | /* PT_TLS segment contains only SHF_TLS sections, PT_PHDR no \ |
317 | sections at all. */ \ |
324 | sections at all. */ \ |
318 | || (((sec_hdr)->sh_flags & SHF_TLS) == 0 \ |
325 | || (((sec_hdr)->sh_flags & SHF_TLS) == 0 \ |
319 | && (segment)->p_type != PT_TLS \ |
326 | && (segment)->p_type != PT_TLS \ |
320 | && (segment)->p_type != PT_PHDR)) \ |
327 | && (segment)->p_type != PT_PHDR)) \ |
- | 328 | /* PT_LOAD and similar segments only have SHF_ALLOC sections. */ \ |
|
- | 329 | && !(((sec_hdr)->sh_flags & SHF_ALLOC) == 0 \ |
|
- | 330 | && ((segment)->p_type == PT_LOAD \ |
|
- | 331 | || (segment)->p_type == PT_DYNAMIC \ |
|
- | 332 | || (segment)->p_type == PT_GNU_EH_FRAME \ |
|
- | 333 | || (segment)->p_type == PT_GNU_RELRO \ |
|
- | 334 | || (segment)->p_type == PT_GNU_STACK)) \ |
|
321 | /* Any section besides one of type SHT_NOBITS must have file \ |
335 | /* Any section besides one of type SHT_NOBITS must have file \ |
322 | offsets within the segment. */ \ |
336 | offsets within the segment. */ \ |
323 | && ((sec_hdr)->sh_type == SHT_NOBITS \ |
337 | && ((sec_hdr)->sh_type == SHT_NOBITS \ |
324 | || ((bfd_vma) (sec_hdr)->sh_offset >= (segment)->p_offset \ |
338 | || ((bfd_vma) (sec_hdr)->sh_offset >= (segment)->p_offset \ |
325 | && (!(strict) \ |
339 | && (!(strict) \ |
326 | || ((sec_hdr)->sh_offset - (segment)->p_offset \ |
340 | || ((sec_hdr)->sh_offset - (segment)->p_offset \ |
327 | <= (segment)->p_filesz - 1)) \ |
341 | <= (segment)->p_filesz - 1)) \ |
328 | && (((sec_hdr)->sh_offset - (segment)->p_offset \ |
342 | && (((sec_hdr)->sh_offset - (segment)->p_offset \ |
329 | + ELF_SECTION_SIZE(sec_hdr, segment)) \ |
343 | + ELF_SECTION_SIZE(sec_hdr, segment)) \ |
330 | <= (segment)->p_filesz))) \ |
344 | <= (segment)->p_filesz))) \ |
331 | /* SHF_ALLOC sections must have VMAs within the segment. */ \ |
345 | /* SHF_ALLOC sections must have VMAs within the segment. */ \ |
332 | && (!(check_vma) \ |
346 | && (!(check_vma) \ |
333 | || ((sec_hdr)->sh_flags & SHF_ALLOC) == 0 \ |
347 | || ((sec_hdr)->sh_flags & SHF_ALLOC) == 0 \ |
334 | || ((sec_hdr)->sh_addr >= (segment)->p_vaddr \ |
348 | || ((sec_hdr)->sh_addr >= (segment)->p_vaddr \ |
335 | && (!(strict) \ |
349 | && (!(strict) \ |
336 | || ((sec_hdr)->sh_addr - (segment)->p_vaddr \ |
350 | || ((sec_hdr)->sh_addr - (segment)->p_vaddr \ |
337 | <= (segment)->p_memsz - 1)) \ |
351 | <= (segment)->p_memsz - 1)) \ |
338 | && (((sec_hdr)->sh_addr - (segment)->p_vaddr \ |
352 | && (((sec_hdr)->sh_addr - (segment)->p_vaddr \ |
339 | + ELF_SECTION_SIZE(sec_hdr, segment)) \ |
353 | + ELF_SECTION_SIZE(sec_hdr, segment)) \ |
340 | <= (segment)->p_memsz))) \ |
354 | <= (segment)->p_memsz))) \ |
341 | /* No zero size sections at start or end of PT_DYNAMIC. */ \ |
355 | /* No zero size sections at start or end of PT_DYNAMIC. */ \ |
342 | && ((segment)->p_type != PT_DYNAMIC \ |
356 | && ((segment)->p_type != PT_DYNAMIC \ |
343 | || (sec_hdr)->sh_size != 0 \ |
357 | || (sec_hdr)->sh_size != 0 \ |
344 | || (segment)->p_memsz == 0 \ |
358 | || (segment)->p_memsz == 0 \ |
345 | || (((sec_hdr)->sh_type == SHT_NOBITS \ |
359 | || (((sec_hdr)->sh_type == SHT_NOBITS \ |
346 | || ((bfd_vma) (sec_hdr)->sh_offset > (segment)->p_offset \ |
360 | || ((bfd_vma) (sec_hdr)->sh_offset > (segment)->p_offset \ |
347 | && ((sec_hdr)->sh_offset - (segment)->p_offset \ |
361 | && ((sec_hdr)->sh_offset - (segment)->p_offset \ |
348 | < (segment)->p_filesz))) \ |
362 | < (segment)->p_filesz))) \ |
349 | && (((sec_hdr)->sh_flags & SHF_ALLOC) == 0 \ |
363 | && (((sec_hdr)->sh_flags & SHF_ALLOC) == 0 \ |
350 | || ((sec_hdr)->sh_addr > (segment)->p_vaddr \ |
364 | || ((sec_hdr)->sh_addr > (segment)->p_vaddr \ |
351 | && ((sec_hdr)->sh_addr - (segment)->p_vaddr \ |
365 | && ((sec_hdr)->sh_addr - (segment)->p_vaddr \ |
352 | < (segment)->p_memsz)))))) |
366 | < (segment)->p_memsz)))))) |
353 | 367 | ||
354 | #define ELF_SECTION_IN_SEGMENT(sec_hdr, segment) \ |
368 | #define ELF_SECTION_IN_SEGMENT(sec_hdr, segment) \ |
355 | (ELF_SECTION_IN_SEGMENT_1 (sec_hdr, segment, 1, 0)) |
369 | (ELF_SECTION_IN_SEGMENT_1 (sec_hdr, segment, 1, 0)) |
356 | 370 | ||
357 | #define ELF_SECTION_IN_SEGMENT_STRICT(sec_hdr, segment) \ |
371 | #define ELF_SECTION_IN_SEGMENT_STRICT(sec_hdr, segment) \ |
358 | (ELF_SECTION_IN_SEGMENT_1 (sec_hdr, segment, 1, 1)) |
372 | (ELF_SECTION_IN_SEGMENT_1 (sec_hdr, segment, 1, 1)) |
359 | 373 | ||
360 | #endif /* _ELF_INTERNAL_H */>>=>=>=>=> |
374 | #endif /* _ELF_INTERNAL_H */>>=>=>=>=> |