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76bdc726 | 1 | /* Copyright (C) 2021-2023 Free Software Foundation, Inc. |
bb368aad VM |
2 | Contributed by Oracle. |
3 | ||
4 | This file is part of GNU Binutils. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, 51 Franklin Street - Fifth Floor, Boston, | |
19 | MA 02110-1301, USA. */ | |
20 | ||
21 | #ifndef _Elf_h_ | |
22 | #define _Elf_h_ | |
23 | ||
24 | #include <string.h> | |
25 | #include "ansidecl.h" | |
26 | #include "bfd.h" | |
27 | #include "elf/common.h" | |
28 | #include "elf/internal.h" | |
29 | ||
30 | #include "Data_window.h" | |
31 | #include "Emsg.h" | |
32 | ||
33 | class Symbol; | |
34 | class DbeFile; | |
35 | template <class ITEM> class Vector; | |
36 | template <typename Key_t, typename Value_t> class Map; | |
37 | ||
38 | #define GELF_R_SYM(info) ((info)>>32) | |
39 | #define GELF_ST_TYPE(info) ((info) & 0xf) | |
40 | #define GELF_ST_BIND(info) ((info) >> 4) | |
41 | #define GELF_R_TYPE(info) ((((uint64_t)(info))<<56)>>56) | |
42 | ||
43 | #define SHF_SUNW_ABSENT 0x00200000 /* section data not present */ | |
44 | ||
45 | // Ancillary values. | |
46 | #define ANC_SUNW_NULL 0 | |
47 | #define ANC_SUNW_CHECKSUM 1 /* elf checksum */ | |
48 | #define ANC_SUNW_MEMBER 2 /* name of ancillary group object */ | |
49 | #define ANC_SUNW_NUM 3 | |
50 | ||
51 | ||
52 | typedef struct S_Elf64_Dyn Elf64_Dyn; | |
53 | typedef struct S_Elf64_Ancillary Elf64_Ancillary; | |
54 | ||
55 | typedef struct | |
56 | { | |
57 | void *d_buf; | |
58 | uint64_t d_flags; | |
59 | uint64_t d_size; | |
60 | uint64_t d_off; // offset into section | |
61 | uint64_t d_align; // alignment in section | |
62 | } Elf_Data; | |
63 | ||
64 | class Elf : public DbeMessages, public Data_window | |
65 | { | |
66 | public: | |
67 | enum Elf_status | |
68 | { | |
69 | ELF_ERR_NONE, | |
70 | ELF_ERR_CANT_OPEN_FILE, | |
71 | ELF_ERR_CANT_MMAP, | |
72 | ELF_ERR_BIG_FILE, | |
73 | ELF_ERR_BAD_ELF_FORMAT, | |
74 | ELF_ERR_READ_FILE | |
75 | }; | |
76 | ||
77 | Elf (char *_fname); | |
78 | ~Elf (); | |
79 | ||
80 | static void elf_init (); | |
81 | static unsigned elf_version (unsigned ver); | |
82 | static Elf *elf_begin (char *_fname, Elf_status *stp = NULL); | |
83 | ||
84 | unsigned int elf_get_sec_num (const char *sec_name); | |
85 | char *get_sec_name (unsigned int sec); | |
86 | Elf_Internal_Ehdr *elf_getehdr (); | |
87 | Elf_Internal_Phdr *get_phdr (unsigned int ndx); | |
88 | Elf_Internal_Shdr *get_shdr (unsigned int ndx); | |
89 | Elf64_Dyn *elf_getdyn (Elf_Internal_Phdr *phdr, unsigned int ndx, Elf64_Dyn *pdyn); | |
90 | Elf_Data *elf_getdata (unsigned int sec); | |
91 | int64_t elf_checksum (); | |
92 | uint64_t get_baseAddr(); | |
93 | char *elf_strptr (unsigned int sec, uint64_t off); | |
94 | Elf_Internal_Sym *elf_getsym (Elf_Data *edta, unsigned int ndx, Elf_Internal_Sym *dst); | |
95 | Elf_Internal_Rela *elf_getrel (Elf_Data *edta, unsigned int ndx, Elf_Internal_Rela *dst); | |
96 | Elf_Internal_Rela *elf_getrela (Elf_Data *edta, unsigned int ndx, Elf_Internal_Rela *dst); | |
97 | Elf64_Ancillary *elf_getancillary (Elf_Data *edta, unsigned int ndx, Elf64_Ancillary *dst); | |
98 | Elf *find_ancillary_files (char *lo_name); // read the .gnu_debuglink and .SUNW_ancillary seections | |
99 | char *get_location (); | |
100 | char *dump (); | |
101 | void dump_elf_sec (); | |
102 | ||
103 | static inline int64_t | |
104 | normalize_checksum (int64_t chk) | |
105 | { | |
106 | return (chk == 0xffffffff || chk == -1) ? 0 : chk; | |
107 | }; | |
108 | ||
109 | inline bool | |
110 | is_Intel () | |
111 | { | |
112 | return elf_datatype == ELFDATA2LSB; | |
113 | }; | |
114 | ||
115 | inline int | |
116 | elf_getclass () | |
117 | { | |
118 | return elf_class; | |
119 | }; | |
120 | ||
121 | inline int | |
122 | elf_getdatatype () | |
123 | { | |
124 | return elf_datatype; | |
125 | }; | |
126 | ||
127 | Elf_status status; | |
128 | Vector<Elf*> *ancillary_files; | |
129 | Elf *gnu_debug_file; | |
130 | DbeFile *dbeFile; | |
131 | Map<const char*, Symbol*> *elfSymbols; | |
132 | unsigned int gnuLink, analyzerInfo, SUNW_ldynsym, stab, stabStr, symtab, dynsym; | |
133 | unsigned int stabIndex, stabIndexStr, stabExcl, stabExclStr, info, plt; | |
134 | bool dwarf; | |
135 | ||
136 | protected: | |
137 | Elf *get_related_file (const char *lo_name, const char *nm); | |
138 | int elf_class; | |
139 | int elf_datatype; | |
140 | Elf_Internal_Ehdr *ehdrp; | |
141 | Elf_Data **data; | |
142 | bfd *abfd; | |
143 | static int bfd_status; | |
144 | }; | |
145 | ||
146 | ||
147 | class ElfReloc | |
148 | { | |
149 | public: | |
150 | struct Sreloc | |
151 | { | |
152 | long long offset; | |
153 | long long value; | |
154 | int stt_type; | |
155 | }; | |
156 | ||
157 | static ElfReloc *get_elf_reloc (Elf *elf, char *sec_name, ElfReloc *rlc); | |
158 | ElfReloc (Elf *_elf); | |
159 | ~ElfReloc (); | |
160 | long long get_reloc_addr (long long offset); | |
161 | void dump (); | |
162 | void dump_rela_debug_sec (int sec); | |
163 | ||
164 | private: | |
165 | Elf *elf; | |
166 | Vector<Sreloc *> *reloc; | |
167 | int cur_reloc_ind; | |
168 | }; | |
169 | ||
170 | #endif |