1#ifndef DYNAMIC_TAG
2#error "DYNAMIC_TAG must be defined"
3#endif
4
5// Add separate macros for the architecture specific tags and the markers
6// such as DT_HIOS, etc. to allow using this file to in other contexts.
7// For example we can use it to generate a stringification switch statement.
8
9#ifndef AARCH64_DYNAMIC_TAG
10#define AARCH64_DYNAMIC_TAG(name, value) DYNAMIC_TAG(name, value)
11#define AARCH64_DYNAMIC_TAG_DEFINED
12#endif
13
14#ifndef HEXAGON_DYNAMIC_TAG
15#define HEXAGON_DYNAMIC_TAG(name, value) DYNAMIC_TAG(name, value)
16#define HEXAGON_DYNAMIC_TAG_DEFINED
17#endif
18
19#ifndef MIPS_DYNAMIC_TAG
20#define MIPS_DYNAMIC_TAG(name, value) DYNAMIC_TAG(name, value)
21#define MIPS_DYNAMIC_TAG_DEFINED
22#endif
23
24#ifndef PPC_DYNAMIC_TAG
25#define PPC_DYNAMIC_TAG(name, value) DYNAMIC_TAG(name, value)
26#define PPC_DYNAMIC_TAG_DEFINED
27#endif
28
29#ifndef PPC64_DYNAMIC_TAG
30#define PPC64_DYNAMIC_TAG(name, value) DYNAMIC_TAG(name, value)
31#define PPC64_DYNAMIC_TAG_DEFINED
32#endif
33
34#ifndef DYNAMIC_TAG_MARKER
35#define DYNAMIC_TAG_MARKER(name, value) DYNAMIC_TAG(name, value)
36#define DYNAMIC_TAG_MARKER_DEFINED
37#endif
38
39DYNAMIC_TAG(NULL, 0) // Marks end of dynamic array.
40DYNAMIC_TAG(NEEDED, 1) // String table offset of needed library.
41DYNAMIC_TAG(PLTRELSZ, 2) // Size of relocation entries in PLT.
42DYNAMIC_TAG(PLTGOT, 3) // Address associated with linkage table.
43DYNAMIC_TAG(HASH, 4) // Address of symbolic hash table.
44DYNAMIC_TAG(STRTAB, 5) // Address of dynamic string table.
45DYNAMIC_TAG(SYMTAB, 6) // Address of dynamic symbol table.
46DYNAMIC_TAG(RELA, 7) // Address of relocation table (Rela entries).
47DYNAMIC_TAG(RELASZ, 8) // Size of Rela relocation table.
48DYNAMIC_TAG(RELAENT, 9) // Size of a Rela relocation entry.
49DYNAMIC_TAG(STRSZ, 10) // Total size of the string table.
50DYNAMIC_TAG(SYMENT, 11) // Size of a symbol table entry.
51DYNAMIC_TAG(INIT, 12) // Address of initialization function.
52DYNAMIC_TAG(FINI, 13) // Address of termination function.
53DYNAMIC_TAG(SONAME, 14) // String table offset of a shared objects name.
54DYNAMIC_TAG(RPATH, 15) // String table offset of library search path.
55DYNAMIC_TAG(SYMBOLIC, 16) // Changes symbol resolution algorithm.
56DYNAMIC_TAG(REL, 17) // Address of relocation table (Rel entries).
57DYNAMIC_TAG(RELSZ, 18) // Size of Rel relocation table.
58DYNAMIC_TAG(RELENT, 19) // Size of a Rel relocation entry.
59DYNAMIC_TAG(PLTREL, 20) // Type of relocation entry used for linking.
60DYNAMIC_TAG(DEBUG, 21) // Reserved for debugger.
61DYNAMIC_TAG(TEXTREL, 22) // Relocations exist for non-writable segments.
62DYNAMIC_TAG(JMPREL, 23) // Address of relocations associated with PLT.
63DYNAMIC_TAG(BIND_NOW, 24) // Process all relocations before execution.
64DYNAMIC_TAG(INIT_ARRAY, 25) // Pointer to array of initialization functions.
65DYNAMIC_TAG(FINI_ARRAY, 26) // Pointer to array of termination functions.
66DYNAMIC_TAG(INIT_ARRAYSZ, 27) // Size of DT_INIT_ARRAY.
67DYNAMIC_TAG(FINI_ARRAYSZ, 28) // Size of DT_FINI_ARRAY.
68DYNAMIC_TAG(RUNPATH, 29) // String table offset of lib search path.
69DYNAMIC_TAG(FLAGS, 30) // Flags.
70DYNAMIC_TAG_MARKER(ENCODING, 32) // Values from here to DT_LOOS follow the rules
71 // for the interpretation of the d_un union.
72
73DYNAMIC_TAG(PREINIT_ARRAY, 32) // Pointer to array of preinit functions.
74DYNAMIC_TAG(PREINIT_ARRAYSZ, 33) // Size of the DT_PREINIT_ARRAY array.
75
76DYNAMIC_TAG(SYMTAB_SHNDX, 34) // Address of the SHT_SYMTAB_SHNDX section.
77
78// Experimental support for SHT_RELR sections. For details, see proposal
79// at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg
80DYNAMIC_TAG(RELRSZ, 35) // Size of Relr relocation table.
81DYNAMIC_TAG(RELR, 36) // Address of relocation table (Relr entries).
82DYNAMIC_TAG(RELRENT, 37) // Size of a Relr relocation entry.
83
84DYNAMIC_TAG_MARKER(LOOS, 0x60000000) // Start of environment specific tags.
85DYNAMIC_TAG_MARKER(HIOS, 0x6FFFFFFF) // End of environment specific tags.
86DYNAMIC_TAG_MARKER(LOPROC, 0x70000000) // Start of processor specific tags.
87DYNAMIC_TAG_MARKER(HIPROC, 0x7FFFFFFF) // End of processor specific tags.
88
89// Android packed relocation section tags.
90// https://android.googlesource.com/platform/bionic/+/6f12bfece5dcc01325e0abba56a46b1bcf991c69/tools/relocation_packer/src/elf_file.cc#31
91DYNAMIC_TAG(ANDROID_REL, 0x6000000F)
92DYNAMIC_TAG(ANDROID_RELSZ, 0x60000010)
93DYNAMIC_TAG(ANDROID_RELA, 0x60000011)
94DYNAMIC_TAG(ANDROID_RELASZ, 0x60000012)
95
96// Android's experimental support for SHT_RELR sections.
97// https://android.googlesource.com/platform/bionic/+/b7feec74547f84559a1467aca02708ff61346d2a/libc/include/elf.h#253
98DYNAMIC_TAG(ANDROID_RELR, 0x6FFFE000) // Address of relocation table (Relr entries).
99DYNAMIC_TAG(ANDROID_RELRSZ, 0x6FFFE001) // Size of Relr relocation table.
100DYNAMIC_TAG(ANDROID_RELRENT, 0x6FFFE003) // Size of a Relr relocation entry.
101
102DYNAMIC_TAG(GNU_HASH, 0x6FFFFEF5) // Reference to the GNU hash table.
103DYNAMIC_TAG(TLSDESC_PLT, 0x6FFFFEF6) // Location of PLT entry for TLS
104 // descriptor resolver calls.
105DYNAMIC_TAG(TLSDESC_GOT, 0x6FFFFEF7) // Location of GOT entry used by TLS
106 // descriptor resolver PLT entry.
107DYNAMIC_TAG(RELACOUNT, 0x6FFFFFF9) // ELF32_Rela count.
108DYNAMIC_TAG(RELCOUNT, 0x6FFFFFFA) // ELF32_Rel count.
109
110DYNAMIC_TAG(FLAGS_1, 0X6FFFFFFB) // Flags_1.
111
112DYNAMIC_TAG(VERSYM, 0x6FFFFFF0) // The address of .gnu.version section.
113DYNAMIC_TAG(VERDEF, 0X6FFFFFFC) // The address of the version definition
114 // table.
115DYNAMIC_TAG(VERDEFNUM, 0X6FFFFFFD) // The number of entries in DT_VERDEF.
116DYNAMIC_TAG(VERNEED, 0X6FFFFFFE) // The address of the version dependency
117 // table.
118DYNAMIC_TAG(VERNEEDNUM, 0X6FFFFFFF) // The number of entries in DT_VERNEED.
119
120// AArch64 specific dynamic table entries
121AARCH64_DYNAMIC_TAG(AARCH64_BTI_PLT, 0x70000001)
122AARCH64_DYNAMIC_TAG(AARCH64_PAC_PLT, 0x70000003)
123AARCH64_DYNAMIC_TAG(AARCH64_VARIANT_PCS, 0x70000005)
124
125// Hexagon specific dynamic table entries
126HEXAGON_DYNAMIC_TAG(HEXAGON_SYMSZ, 0x70000000)
127HEXAGON_DYNAMIC_TAG(HEXAGON_VER, 0x70000001)
128HEXAGON_DYNAMIC_TAG(HEXAGON_PLT, 0x70000002)
129
130// Mips specific dynamic table entry tags.
131
132MIPS_DYNAMIC_TAG(MIPS_RLD_VERSION, 0x70000001) // 32 bit version number for
133 // runtime linker interface.
134MIPS_DYNAMIC_TAG(MIPS_TIME_STAMP, 0x70000002) // Time stamp.
135MIPS_DYNAMIC_TAG(MIPS_ICHECKSUM, 0x70000003) // Checksum of external strings
136 // and common sizes.
137MIPS_DYNAMIC_TAG(MIPS_IVERSION, 0x70000004) // Index of version string
138 // in string table.
139MIPS_DYNAMIC_TAG(MIPS_FLAGS, 0x70000005) // 32 bits of flags.
140MIPS_DYNAMIC_TAG(MIPS_BASE_ADDRESS, 0x70000006) // Base address of the segment.
141MIPS_DYNAMIC_TAG(MIPS_MSYM, 0x70000007) // Address of .msym section.
142MIPS_DYNAMIC_TAG(MIPS_CONFLICT, 0x70000008) // Address of .conflict section.
143MIPS_DYNAMIC_TAG(MIPS_LIBLIST, 0x70000009) // Address of .liblist section.
144MIPS_DYNAMIC_TAG(MIPS_LOCAL_GOTNO, 0x7000000a) // Number of local global offset
145 // table entries.
146MIPS_DYNAMIC_TAG(MIPS_CONFLICTNO, 0x7000000b) // Number of entries
147 // in the .conflict section.
148MIPS_DYNAMIC_TAG(MIPS_LIBLISTNO, 0x70000010) // Number of entries
149 // in the .liblist section.
150MIPS_DYNAMIC_TAG(MIPS_SYMTABNO, 0x70000011) // Number of entries
151 // in the .dynsym section.
152MIPS_DYNAMIC_TAG(MIPS_UNREFEXTNO, 0x70000012) // Index of first external dynamic
153 // symbol not referenced locally.
154MIPS_DYNAMIC_TAG(MIPS_GOTSYM, 0x70000013) // Index of first dynamic symbol
155 // in global offset table.
156MIPS_DYNAMIC_TAG(MIPS_HIPAGENO, 0x70000014) // Number of page table entries
157 // in global offset table.
158MIPS_DYNAMIC_TAG(MIPS_RLD_MAP, 0x70000016) // Address of run time loader map
159 // used for debugging.
160MIPS_DYNAMIC_TAG(MIPS_DELTA_CLASS, 0x70000017) // Delta C++ class definition.
161MIPS_DYNAMIC_TAG(MIPS_DELTA_CLASS_NO, 0x70000018) // Number of entries
162 // in DT_MIPS_DELTA_CLASS.
163MIPS_DYNAMIC_TAG(MIPS_DELTA_INSTANCE, 0x70000019) // Delta C++ class instances.
164MIPS_DYNAMIC_TAG(MIPS_DELTA_INSTANCE_NO, 0x7000001A) // Number of entries
165 // in DT_MIPS_DELTA_INSTANCE.
166MIPS_DYNAMIC_TAG(MIPS_DELTA_RELOC, 0x7000001B) // Delta relocations.
167MIPS_DYNAMIC_TAG(MIPS_DELTA_RELOC_NO, 0x7000001C) // Number of entries
168 // in DT_MIPS_DELTA_RELOC.
169MIPS_DYNAMIC_TAG(MIPS_DELTA_SYM, 0x7000001D) // Delta symbols that Delta
170 // relocations refer to.
171MIPS_DYNAMIC_TAG(MIPS_DELTA_SYM_NO, 0x7000001E) // Number of entries
172 // in DT_MIPS_DELTA_SYM.
173MIPS_DYNAMIC_TAG(MIPS_DELTA_CLASSSYM, 0x70000020) // Delta symbols that hold
174 // class declarations.
175MIPS_DYNAMIC_TAG(MIPS_DELTA_CLASSSYM_NO, 0x70000021) // Number of entries
176 // in DT_MIPS_DELTA_CLASSSYM.
177
178MIPS_DYNAMIC_TAG(MIPS_CXX_FLAGS, 0x70000022) // Flags indicating information
179 // about C++ flavor.
180MIPS_DYNAMIC_TAG(MIPS_PIXIE_INIT, 0x70000023) // Pixie information.
181MIPS_DYNAMIC_TAG(MIPS_SYMBOL_LIB, 0x70000024) // Address of .MIPS.symlib
182MIPS_DYNAMIC_TAG(MIPS_LOCALPAGE_GOTIDX, 0x70000025) // The GOT index of the first PTE
183 // for a segment
184MIPS_DYNAMIC_TAG(MIPS_LOCAL_GOTIDX, 0x70000026) // The GOT index of the first PTE
185 // for a local symbol
186MIPS_DYNAMIC_TAG(MIPS_HIDDEN_GOTIDX, 0x70000027) // The GOT index of the first PTE
187 // for a hidden symbol
188MIPS_DYNAMIC_TAG(MIPS_PROTECTED_GOTIDX, 0x70000028) // The GOT index of the first PTE
189 // for a protected symbol
190MIPS_DYNAMIC_TAG(MIPS_OPTIONS, 0x70000029) // Address of `.MIPS.options'.
191MIPS_DYNAMIC_TAG(MIPS_INTERFACE, 0x7000002A) // Address of `.interface'.
192MIPS_DYNAMIC_TAG(MIPS_DYNSTR_ALIGN, 0x7000002B) // Unknown.
193MIPS_DYNAMIC_TAG(MIPS_INTERFACE_SIZE, 0x7000002C) // Size of the .interface section.
194MIPS_DYNAMIC_TAG(MIPS_RLD_TEXT_RESOLVE_ADDR, 0x7000002D) // Size of rld_text_resolve
195 // function stored in the GOT.
196MIPS_DYNAMIC_TAG(MIPS_PERF_SUFFIX, 0x7000002E) // Default suffix of DSO to be added
197 // by rld on dlopen() calls.
198MIPS_DYNAMIC_TAG(MIPS_COMPACT_SIZE, 0x7000002F) // Size of compact relocation
199 // section (O32).
200MIPS_DYNAMIC_TAG(MIPS_GP_VALUE, 0x70000030) // GP value for auxiliary GOTs.
201MIPS_DYNAMIC_TAG(MIPS_AUX_DYNAMIC, 0x70000031) // Address of auxiliary .dynamic.
202MIPS_DYNAMIC_TAG(MIPS_PLTGOT, 0x70000032) // Address of the base of the PLTGOT.
203MIPS_DYNAMIC_TAG(MIPS_RWPLT, 0x70000034) // Points to the base
204 // of a writable PLT.
205MIPS_DYNAMIC_TAG(MIPS_RLD_MAP_REL, 0x70000035) // Relative offset of run time loader
206 // map, used for debugging.
207
208// PPC specific dynamic table entries.
209PPC_DYNAMIC_TAG(PPC_GOT, 0x70000000) // Uses Secure PLT ABI.
210PPC_DYNAMIC_TAG(PPC_OPT, 0x70000001) // Has TLS optimization.
211
212// PPC64 specific dynamic table entries.
213PPC64_DYNAMIC_TAG(PPC64_GLINK, 0x70000000) // Address of 32 bytes before the
214 // first glink lazy resolver stub.
215
216// Sun machine-independent extensions.
217DYNAMIC_TAG(AUXILIARY, 0x7FFFFFFD) // Shared object to load before self
218DYNAMIC_TAG(USED, 0x7FFFFFFE) // Same as DT_NEEDED
219DYNAMIC_TAG(FILTER, 0x7FFFFFFF) // Shared object to get values from
220
221
222#ifdef DYNAMIC_TAG_MARKER_DEFINED
223#undef DYNAMIC_TAG_MARKER
224#undef DYNAMIC_TAG_MARKER_DEFINED
225#endif
226#ifdef AARCH64_DYNAMIC_TAG_DEFINED
227#undef AARCH64_DYNAMIC_TAG
228#undef AARCH64_DYNAMIC_TAG_DEFINED
229#endif
230#ifdef MIPS_DYNAMIC_TAG_DEFINED
231#undef MIPS_DYNAMIC_TAG
232#undef MIPS_DYNAMIC_TAG_DEFINED
233#endif
234#ifdef HEXAGON_DYNAMIC_TAG_DEFINED
235#undef HEXAGON_DYNAMIC_TAG
236#undef HEXAGON_DYNAMIC_TAG_DEFINED
237#endif
238#ifdef PPC_DYNAMIC_TAG_DEFINED
239#undef PPC_DYNAMIC_TAG
240#undef PPC_DYNAMIC_TAG_DEFINED
241#endif
242#ifdef PPC64_DYNAMIC_TAG_DEFINED
243#undef PPC64_DYNAMIC_TAG
244#undef PPC64_DYNAMIC_TAG_DEFINED
245#endif
246