FD.io VPP  v20.01-48-g3e0dafb74
Vector Packet Processing
elf.h
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1 /*
2  * Copyright (c) 2015 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 /*
16  Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus
17 
18  Permission is hereby granted, free of charge, to any person obtaining
19  a copy of this software and associated documentation files (the
20  "Software"), to deal in the Software without restriction, including
21  without limitation the rights to use, copy, modify, merge, publish,
22  distribute, sublicense, and/or sell copies of the Software, and to
23  permit persons to whom the Software is furnished to do so, subject to
24  the following conditions:
25 
26  The above copyright notice and this permission notice shall be
27  included in all copies or substantial portions of the Software.
28 
29  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
33  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
34  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
35  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 */
37 
38 #ifndef included_clib_elf_h
39 #define included_clib_elf_h
40 
41 #include <vppinfra/format.h>
42 #include <vppinfra/hash.h>
43 #include <vppinfra/vec.h>
44 #include <vppinfra/byte_order.h>
45 
46 #define foreach_elf_file_class \
47  _ (CLASS_NONE) _ (32BIT) _ (64BIT)
48 
49 #define foreach_elf_data_encoding \
50  _ (ENCODING_NONE) \
51  _ (TWOS_COMPLEMENT_LITTLE_ENDIAN) \
52  _ (TWOS_COMPLEMENT_BIG_ENDIAN)
53 
54 #define ELF_VERSION_NONE (0)
55 #define ELF_VERSION_CURRENT (1)
56 
57 #define foreach_elf_abi \
58  _ (SYSV, 0) \
59  _ (HPUX, 1) \
60  _ (NETBSD, 2) \
61  _ (LINUX, 3) \
62  _ (SOLARIS, 6) \
63  _ (AIX, 7) \
64  _ (IRIX, 8) \
65  _ (FREEBSD, 9) \
66  _ (COMPAQ_TRU64, 10) \
67  _ (MODESTO, 11) \
68  _ (OPENBSD, 12) \
69  _ (ARM, 97) \
70  _ (STANDALONE, 255)
71 
72 /* Legal values for type (object file type). */
73 #define foreach_elf_file_type \
74  _ (NONE, 0) \
75  _ (RELOC, 1) \
76  _ (EXEC, 2) \
77  _ (SHARED, 3) \
78  _ (CORE, 4) \
79  _ (OS_SPECIFIC_LO, 0xfe00) \
80  _ (OS_SPECIFIC_HI, 0xfeff) \
81  _ (ARCH_SPECIFIC_LO, 0xff00) \
82  _ (ARCH_SPECIFIC_HI, 0xffff)
83 
84 /* Legal values for architecture. */
85 #define foreach_elf_architecture \
86  _ (NONE, 0) /* No machine */ \
87  _ (M32, 1) /* AT&T WE 32100 */ \
88  _ (SPARC, 2) /* SUN SPARC */ \
89  _ (386, 3) /* Intel 80386 */ \
90  _ (68K, 4) /* Motorola m68k family */ \
91  _ (88K, 5) /* Motorola m88k family */ \
92  _ (860, 7) /* Intel 80860 */ \
93  _ (MIPS, 8) /* MIPS R3000 big-endian */ \
94  _ (S370, 9) /* IBM System/370 */ \
95  _ (MIPS_RS3_LE, 10) /* MIPS R3000 little-endian */ \
96  _ (PARISC, 15) /* HPPA */ \
97  _ (VPP500, 17) /* Fujitsu VPP500 */ \
98  _ (SPARC32PLUS, 18) /* Sun's "v8plus" */ \
99  _ (960, 19) /* Intel 80960 */ \
100  _ (PPC, 20) /* PowerPC */ \
101  _ (PPC64, 21) /* PowerPC 64-bit */ \
102  _ (S390, 22) /* IBM S390 */ \
103  _ (V800, 36) /* NEC V800 series */ \
104  _ (FR20, 37) /* Fujitsu FR20 */ \
105  _ (RH32, 38) /* TRW RH-32 */ \
106  _ (RCE, 39) /* Motorola RCE */ \
107  _ (ARM, 40) /* ARM */ \
108  _ (FAKE_ALPHA, 41) /* Digital Alpha */ \
109  _ (SH, 42) /* Hitachi SH */ \
110  _ (SPARCV9, 43) /* SPARC v9 64-bit */ \
111  _ (TRICORE, 44) /* Siemens Tricore */ \
112  _ (ARC, 45) /* Argonaut RISC Core */ \
113  _ (H8_300, 46) /* Hitachi H8/300 */ \
114  _ (H8_300H, 47) /* Hitachi H8/300H */ \
115  _ (H8S, 48) /* Hitachi H8S */ \
116  _ (H8_500, 49) /* Hitachi H8/500 */ \
117  _ (IA_64, 50) /* Intel Merced */ \
118  _ (MIPS_X, 51) /* Stanford MIPS-X */ \
119  _ (COLDFIRE, 52) /* Motorola Coldfire */ \
120  _ (68HC12, 53) /* Motorola M68HC12 */ \
121  _ (MMA, 54) /* Fujitsu MMA Multimedia Accel. */ \
122  _ (PCP, 55) /* Siemens PCP */ \
123  _ (NCPU, 56) /* Sony nCPU embedded RISC */ \
124  _ (NDR1, 57) /* Denso NDR1 microprocessor */ \
125  _ (STARCORE, 58) /* Motorola Start*Core processor */ \
126  _ (ME16, 59) /* Toyota ME16 processor */ \
127  _ (ST100, 60) /* STMicroelectronic ST100 */ \
128  _ (TINYJ, 61) /* Advanced Logic Corp. Tinyj */ \
129  _ (X86_64, 62) /* AMD x86-64 architecture */ \
130  _ (PDSP, 63) /* Sony DSP Processor */ \
131  _ (FX66, 66) /* Siemens FX66 microcontroller */ \
132  _ (ST9PLUS, 67) /* STMicroelectronics ST9+ 8/16 mc */ \
133  _ (ST7, 68) /* STmicroelectronics ST7 8 bit mc */ \
134  _ (68HC16, 69) /* Motorola MC68HC16 */ \
135  _ (68HC11, 70) /* Motorola MC68HC11 */ \
136  _ (68HC08, 71) /* Motorola MC68HC08 */ \
137  _ (68HC05, 72) /* Motorola MC68HC05 */ \
138  _ (SVX, 73) /* Silicon Graphics SVx */ \
139  _ (ST19, 74) /* STMicroelectronics ST19 8 bit mc */ \
140  _ (VAX, 75) /* Digital VAX */ \
141  _ (CRIS, 76) /* Axis 32-bit embedded proc. */ \
142  _ (JAVELIN, 77) /* Infineon 32-bit embedded proc. */ \
143  _ (FIREPATH, 78) /* Element 14 64-bit DSP Processor */ \
144  _ (ZSP, 79) /* LSI Logic 16-bit DSP Processor */ \
145  _ (MMIX, 80) /* Knuth's 64-bit processor */ \
146  _ (HUANY, 81) /* Harvard machine-independent */ \
147  _ (PRISM, 82) /* SiTera Prism */ \
148  _ (AVR, 83) /* Atmel AVR 8-bit microcontroller */ \
149  _ (FR30, 84) /* Fujitsu FR30 */ \
150  _ (D10V, 85) /* Mitsubishi D10V */ \
151  _ (D30V, 86) /* Mitsubishi D30V */ \
152  _ (V850, 87) /* NEC v850 */ \
153  _ (M32R, 88) /* Mitsubishi M32R */ \
154  _ (MN10300, 89) /* Matsushita MN10300 */ \
155  _ (MN10200, 90) /* Matsushita MN10200 */ \
156  _ (PJ, 91) /* picoJava */ \
157  _ (OPENRISC, 92) /* OpenRISC 32-bit processor */ \
158  _ (ARC_A5, 93) /* ARC Cores Tangent-A5 */ \
159  _ (XTENSA, 94) /* Tensilica Xtensa Architecture */ \
160  _ (ALPHA, 0x9026)
161 
162 #define _(f) ELF_##f,
163 
164 typedef enum
165 {
168 
169 typedef enum
170 {
173 
174 #undef _
175 
176 #define _(f,i) ELF_##f = i,
177 
178 typedef enum
179 {
181 } elf_abi_t;
182 
183 typedef enum
184 {
187 
188 #undef _
189 
190 typedef enum
191 {
192 #define _(f,i) ELF_ARCH_##f = i,
194 #undef _
196 
197 typedef struct
198 {
199  /* 0x7f ELF */
200  u8 magic[4];
201 
207 
208  u8 pad[7];
209 
212 
215 
216 /* 32/64 bit file header following basic file header. */
217 #define foreach_elf32_file_header \
218  _ (u32, entry_point) \
219  _ (u32, segment_header_file_offset) \
220  _ (u32, section_header_file_offset) \
221  _ (u32, flags) \
222  _ (u16, n_bytes_this_header) \
223  _ (u16, segment_header_size) \
224  _ (u16, segment_header_count) \
225  _ (u16, section_header_size) \
226  _ (u16, section_header_count) \
227  _ (u16, section_header_string_table_index)
228 
229 #define foreach_elf64_file_header \
230  _ (u64, entry_point) \
231  _ (u64, segment_header_file_offset) \
232  _ (u64, section_header_file_offset) \
233  _ (u32, flags) \
234  _ (u16, n_bytes_this_header) \
235  _ (u16, segment_header_size) \
236  _ (u16, segment_header_count) \
237  _ (u16, section_header_size) \
238  _ (u16, section_header_count) \
239  _ (u16, section_header_string_table_index)
240 
241 /* Section header. */
242 #define foreach_elf32_section_header \
243  _ (u32, name) \
244  _ (u32, type) \
245  _ (u32, flags) \
246  _ (u32, exec_address) \
247  _ (u32, file_offset) \
248  _ (u32, file_size) \
249  _ (u32, link) \
250  _ (u32, additional_info) \
251  _ (u32, align) \
252  _ (u32, entry_size)
253 
254 #define foreach_elf64_section_header \
255  _ (u32, name) \
256  _ (u32, type) \
257  _ (u64, flags) \
258  _ (u64, exec_address) \
259  _ (u64, file_offset) \
260  _ (u64, file_size) \
261  _ (u32, link) \
262  _ (u32, additional_info) \
263  _ (u64, align) \
264  _ (u64, entry_size)
265 
266 /* Program segment header. */
267 #define foreach_elf32_segment_header \
268  _ (u32, type) \
269  _ (u32, file_offset) \
270  _ (u32, virtual_address) \
271  _ (u32, physical_address) \
272  _ (u32, file_size) \
273  _ (u32, memory_size) \
274  _ (u32, flags) \
275  _ (u32, align)
276 
277 #define foreach_elf64_segment_header \
278  _ (u32, type) \
279  _ (u32, flags) \
280  _ (u64, file_offset) \
281  _ (u64, virtual_address) \
282  _ (u64, physical_address) \
283  _ (u64, file_size) \
284  _ (u64, memory_size) \
285  _ (u64, align)
286 
287 /* Symbol table. */
288 #define foreach_elf32_symbol_header \
289  _ (u32, name) \
290  _ (u32, value) \
291  _ (u32, size) \
292  /* binding upper 4 bits; type lower 4 bits */ \
293  _ (u8, binding_and_type) \
294  _ (u8, visibility) \
295  _ (u16, section_index)
296 
297 #define foreach_elf64_symbol_header \
298  _ (u32, name) \
299  _ (u8, binding_and_type) \
300  _ (u8, visibility) \
301  _ (u16, section_index) \
302  _ (u64, value) \
303  _ (u64, size)
304 
305 #define _(t,f) t f;
306 
307 typedef struct
308 {
310 
311 typedef struct
312 {
314 
315 typedef struct
316 {
318 
319 typedef struct
320 {
322 
323 typedef struct
324 {
326 
327 typedef struct
328 {
330 
331 typedef struct
332 {
334 
335 typedef struct
336 {
338 #undef _
339 
340 /* Special section names. */
341 #define foreach_elf_symbol_reserved_section_index \
342  _ (ABSOLUTE, 0xfff1) /* Associated symbol is absolute */ \
343  _ (COMMON, 0xfff2) /* Associated symbol is common */ \
344  _ (XINDEX, 0xffff) /* Index is in extra table. */
345 
346 #define ELF_SYMBOL_SECTION_RESERVED_LO 0xff00
347 #define ELF_SYMBOL_SECTION_RESERVED_HI 0xffff
348 #define ELF_SYMBOL_SECTION_ARCH_SPECIFIC_LO 0xff00
349 #define ELF_SYMBOL_SECTION_ARCH_SPECIFIC_HI 0xff1f
350 #define ELF_SYMBOL_SECTION_OS_SPECIFIC_LO 0xff20
351 #define ELF_SYMBOL_SECTION_OS_SPECIFIC_HI 0xff3f
352 
353 /* Section types. */
354 #define foreach_elf_section_type \
355  _ (UNUSED, 0) \
356  _ (PROGRAM_DATA, 1) \
357  _ (SYMBOL_TABLE, 2) \
358  _ (STRING_TABLE, 3) \
359  _ (RELOCATION_ADD, 4) \
360  _ (SYMBOL_TABLE_HASH, 5) \
361  _ (DYNAMIC, 6) /* Dynamic linking information */ \
362  _ (NOTE, 7) /* Notes */ \
363  _ (NO_BITS, 8) /* Program space with no data (bss) */ \
364  _ (RELOCATION, 9) /* Relocation entries, no addends */ \
365  _ (DYNAMIC_SYMBOL_TABLE, 11) /* Dynamic linker symbol table */ \
366  _ (INIT_ARRAY, 14) /* Array of constructors */ \
367  _ (FINI_ARRAY, 15) /* Array of destructors */ \
368  _ (PREINIT_ARRAY, 16) /* Array of pre-constructors */ \
369  _ (GROUP, 17) /* Section group */ \
370  _ (SYMTAB_SHNDX, 18) /* Extended section indices */ \
371  _ (OS_SPECIFIC_LO, 0x60000000) /* Start OS-specific */ \
372  _ (GNU_LIBLIST, 0x6ffffff7) /* Prelink library list */ \
373  _ (CHECKSUM, 0x6ffffff8) /* Checksum for DSO content. */ \
374  _ (SUNW_MOVE, 0x6ffffffa) \
375  _ (SUNW_COMDAT, 0x6ffffffb) \
376  _ (SUNW_SYMINFO, 0x6ffffffc) \
377  _ (GNU_VERDEF, 0x6ffffffd) /* Version definition section. */ \
378  _ (GNU_VERNEED, 0x6ffffffe) /* Version needs section. */ \
379  _ (GNU_VERSYM, 0x6fffffff) /* Version symbol table. */ \
380  _ (ARCH_SPECIFIC_LO, 0x70000000) /* Start of processor-specific */ \
381  _ (ARCH_SPECIFIC_HI, 0x7fffffff) /* End of processor-specific */ \
382  _ (APP_SPECIFIC_LO, 0x80000000) /* Start of application-specific */ \
383  _ (APP_SPECIFIC_HI, 0x8fffffff) /* End of application-specific */
384 
385 /* Section flags. */
386 #define foreach_elf_section_flag \
387  _ (WRITE, 0) \
388  _ (ALLOC, 1) \
389  _ (EXEC, 2) \
390  _ (MERGE, 3) \
391  _ (STRING_TABLE, 5) \
392  _ (INFO_LINK, 6) \
393  _ (PRESERVE_LINK_ORDER, 7) \
394  _ (OS_NON_CONFORMING, 8) \
395  _ (GROUP, 9) \
396  _ (TLS, 10) \
397  _ (OS_SPECIFIC_LO, 20) \
398  _ (OS_SPECIFIC_HI, 27) \
399  _ (ARCH_SPECIFIC_LO, 28) \
400  _ (ARCH_SPECIFIC_HI, 31)
401 
402 typedef enum
403 {
404 #define _(f,i) ELF_SECTION_##f = i,
406 #undef _
409 
410 typedef enum
411 {
412 #define _(f,i) ELF_SECTION_FLAG_BIT_##f = i,
414 #undef _
416 
417 typedef enum
418 {
419 #define _(f,i) ELF_SECTION_FLAG_##f = 1 << ELF_SECTION_FLAG_BIT_##f,
421 #undef _
423 
424 /* Symbol bindings (upper 4 bits of binding_and_type). */
425 #define foreach_elf_symbol_binding \
426  _ (LOCAL, 0) /* Local symbol */ \
427  _ (GLOBAL, 1) /* Global symbol */ \
428  _ (WEAK, 2) /* Weak symbol */ \
429  _ (OS_SPECIFIC_LO, 10) /* Start of OS-specific */ \
430  _ (OS_SPECIFIC_HI, 12) /* End of OS-specific */ \
431  _ (ARCH_SPECIFIC_LO, 13) /* Start of processor-specific */ \
432  _ (ARCH_SPECIFIC_HI, 15) /* End of processor-specific */
433 
434 /* Symbol types (lower 4 bits of binding_and_type). */
435 #define foreach_elf_symbol_type \
436  _ (NONE, 0) \
437  _ (DATA, 1) /* Symbol is a data object */ \
438  _ (CODE, 2) /* Symbol is a code object */ \
439  _ (SECTION, 3) /* Symbol associated with a section */ \
440  _ (FILE, 4) /* Symbol's name is file name */ \
441  _ (COMMON, 5) /* Symbol is a common data object */ \
442  _ (TLS, 6) /* Symbol is thread-local data */ \
443  _ (OS_SPECIFIC_LO, 10) /* Start of OS-specific */ \
444  _ (OS_SPECIFIC_HI, 12) /* End of OS-specific */ \
445  _ (ARCH_SPECIFIC_LO, 13) /* Start of processor-specific */ \
446  _ (ARCH_SPECIFIC_HI, 15) /* End of processor-specific */
447 
448 /* Symbol visibility. */
449 #define foreach_elf_symbol_visibility \
450  _ (DEFAULT, 0) /* Default symbol visibility rules */ \
451  _ (INTERNAL, 1) /* Processor specific hidden class */ \
452  _ (HIDDEN, 2) /* Unavailable in other modules */ \
453  _ (PROTECTED, 3) /* Not preemptible, not exported */
454 
455 /* The syminfo section if available contains additional
456  information about every dynamic symbol. */
457 typedef struct
458 {
462 
463 /* Possible values for bound_to. */
464 #define foreach_elf_symbol_info_bound_to \
465  _ (SELF, 0xffff) /* Symbol bound to self */ \
466  _ (PARENT, 0xfffe) /* Symbol bound to parent */ \
467  _ (RESERVED_LO, 0xff00) \
468  _ (RESERVED_HI, 0xffff)
469 
470 /* Symbol info flags. */
471 #define foreach_elf_symbol_info_flags \
472  _ (DIRECT) /* Direct bound symbol */ \
473  _ (PASS_THRU) /* Pass-thru symbol for translator */ \
474  _ (COPY) /* Symbol is a copy-reloc */ \
475  _ (LAZY_LOAD) /* Symbol bound to object to be lazy loaded */
476 
477 /* Relocation table entry with/without addend. */
478 typedef struct
479 {
481  u32 symbol_and_type; /* high 24 symbol, low 8 type. */
482  i32 addend[0];
484 
485 typedef struct
486 {
488  u64 symbol_and_type; /* high 32 symbol, low 32 type. */
489  i64 addend[0];
491 
492 typedef struct
493 {
498 
499 #define elf_relocation_next(r,type) \
500  ((void *) ((r) + 1) \
501  + ((type) == ELF_SECTION_RELOCATION_ADD ? sizeof ((r)->addend[0]) : 0))
502 
503 /* Segment type. */
504 #define foreach_elf_segment_type \
505  _ (UNUSED, 0) \
506  _ (LOAD, 1) /* Loadable program segment */ \
507  _ (DYNAMIC, 2) /* Dynamic linking information */ \
508  _ (INTERP, 3) /* Program interpreter */ \
509  _ (NOTE, 4) /* Auxiliary information */ \
510  _ (SEGMENT_TABLE, 6) /* Entry for header table itself */ \
511  _ (TLS, 7) /* Thread-local storage segment */ \
512  _ (OS_SPECIFIC_LO, 0x60000000) /* Start of OS-specific */ \
513  _ (GNU_EH_FRAME, 0x6474e550) /* GCC .eh_frame_hdr segment */ \
514  _ (GNU_STACK, 0x6474e551) /* Indicates stack executability */ \
515  _ (GNU_RELRO, 0x6474e552) /* Read-only after relocation */ \
516  _ (SUNW_BSS, 0x6ffffffa) /* Sun specific BSS */ \
517  _ (SUNW_STACK, 0x6ffffffb) /* Sun specific stack */ \
518  _ (OS_SPECIFIC_HI, 0x6fffffff) /* End of OS-specific */ \
519  _ (ARCH_SPECIFIC_LO, 0x70000000) /* Start of processor-specific */ \
520  _ (ARCH_SPECIFIC_HI, 0x7fffffff) /* End of processor-specific */
521 
522 /* Segment flags. */
523 #define foreach_elf_segment_flag \
524  _ (EXEC, 0) \
525  _ (WRITE, 1) \
526  _ (READ, 2) \
527  _ (OS_SPECIFIC_LO, 20) \
528  _ (OS_SPECIFIC_HI, 27) \
529  _ (ARCH_SPECIFIC_LO, 28) \
530  _ (ARCH_SPECIFIC_HI, 31)
531 
532 typedef enum
533 {
534 #define _(f,i) ELF_SEGMENT_##f = i,
536 #undef _
538 
539 typedef enum
540 {
541 #define _(f,i) ELF_SEGMENT_FLAG_BIT_##f = i,
543 #undef _
545 
546 typedef enum
547 {
548 #define _(f,i) ELF_SEGMENT_FLAG_##f = 1 << ELF_SEGMENT_FLAG_BIT_##f,
550 #undef _
552 
553 #define foreach_elf32_dynamic_entry_header \
554  _ (u32, type) \
555  _ (u32, data)
556 
557 #define foreach_elf64_dynamic_entry_header \
558  _ (u64, type) \
559  _ (u64, data)
560 
561 #define _(t,f) t f;
562 
563 typedef struct
564 {
566 
567 typedef struct
568 {
570 
571 #undef _
572 
573 #define foreach_elf_dynamic_entry_type \
574  _ (END, 0) /* Marks end of dynamic section */ \
575  _ (NEEDED_LIBRARY, 1) /* Name of needed library */ \
576  _ (PLT_RELOCATION_SIZE, 2) /* Size in bytes of PLT relocs */ \
577  _ (PLT_GOT, 3) /* Processor defined value */ \
578  _ (SYMBOL_HASH, 4) /* Address of symbol hash table */ \
579  _ (STRING_TABLE, 5) /* Address of string table */ \
580  _ (SYMBOL_TABLE, 6) /* Address of symbol table */ \
581  _ (RELA_ADDRESS, 7) /* Address of Rela relocs */ \
582  _ (RELA_SIZE, 8) /* Total size of Rela relocs */ \
583  _ (RELA_ENTRY_SIZE, 9) /* Size of one Rela reloc */ \
584  _ (STRING_TABLE_SIZE, 10) /* Size of string table */ \
585  _ (SYMBOL_TABLE_ENTRY_SIZE, 11) /* Size of one symbol table entry */ \
586  _ (INIT_FUNCTION, 12) /* Address of init function */ \
587  _ (FINI_FUNCTION, 13) /* Address of termination function */ \
588  _ (SONAME, 14) /* Name of shared object */ \
589  _ (RPATH, 15) /* Library search path (deprecated) */ \
590  _ (SYMBOLIC, 16) /* Start symbol search here */ \
591  _ (REL, 17) /* Address of Rel relocs */ \
592  _ (RELSZ, 18) /* Total size of Rel relocs */ \
593  _ (RELENT, 19) /* Size of one Rel reloc */ \
594  _ (PLT_RELOCATION_TYPE, 20) /* Type of reloc in PLT */ \
595  _ (DEBUG, 21) /* For debugging; unspecified */ \
596  _ (TEXTREL, 22) /* Reloc might modify .text */ \
597  _ (PLT_RELOCATION_ADDRESS, 23) /* Address of PLT relocs */ \
598  _ (BIND_NOW, 24) /* Process relocations of object */ \
599  _ (INIT_ARRAY, 25) /* Array with addresses of init fct */ \
600  _ (FINI_ARRAY, 26) /* Array with addresses of fini fct */ \
601  _ (INIT_ARRAYSZ, 27) /* Size in bytes of DT_INIT_ARRAY */ \
602  _ (FINI_ARRAYSZ, 28) /* Size in bytes of DT_FINI_ARRAY */ \
603  _ (RUN_PATH, 29) /* Library search path */ \
604  _ (FLAGS, 30) /* Flags for object being loaded */ \
605  _ (ENCODING, 31) /* Start of encoded range */ \
606  _ (PREINIT_ARRAY, 32) /* Array with addresses of fns */ \
607  _ (PREINIT_ARRAY_SIZE, 33) /* Size of PREINIT_ARRAY in bytes. */ \
608  _ (GNU_PRELINKED, 0x6ffffdf5) /* Prelinking timestamp */ \
609  _ (GNU_CONFLICTSZ, 0x6ffffdf6) /* Size of conflict section */ \
610  _ (GNU_LIBLISTSZ, 0x6ffffdf7) /* Size of library list */ \
611  _ (CHECKSUM, 0x6ffffdf8) \
612  _ (PLTPADSZ, 0x6ffffdf9) \
613  _ (MOVEENT, 0x6ffffdfa) \
614  _ (MOVESZ, 0x6ffffdfb) \
615  _ (FEATURE_1, 0x6ffffdfc) /* Feature selection (DTF_*). */ \
616  _ (POSFLAG_1, 0x6ffffdfd) /* Flags for following entries. */ \
617  _ (SYMINSZ, 0x6ffffdfe) /* Size of syminfo table (in bytes) */ \
618  _ (SYMINENT, 0x6ffffdff) /* Entry size of syminfo */ \
619  _ (GNU_HASH, 0x6ffffef5) \
620  _ (GNU_CONFLICT, 0x6ffffef8) /* Start of conflict section */ \
621  _ (GNU_LIBLIST, 0x6ffffef9) /* Library list */ \
622  _ (CONFIG, 0x6ffffefa) /* Configuration information. */ \
623  _ (DEPAUDIT, 0x6ffffefb) /* Dependency auditing. */ \
624  _ (AUDIT, 0x6ffffefc) /* Object auditing. */ \
625  _ (PLTPAD, 0x6ffffefd) /* PLT padding. */ \
626  _ (MOVETAB, 0x6ffffefe) /* Move table. */ \
627  _ (SYMINFO, 0x6ffffeff) /* Syminfo table. */ \
628  _ (VERSYM, 0x6ffffff0) \
629  _ (RELACOUNT, 0x6ffffff9) \
630  _ (RELCOUNT, 0x6ffffffa) \
631  _ (FLAGS_1, 0x6ffffffb) /* State flags, see DF_1_* below. */ \
632  _ (VERSION_DEF, 0x6ffffffc) /* Address of version definition table */ \
633  _ (VERSION_DEF_COUNT, 0x6ffffffd) /* Number of version definitions */ \
634  _ (VERSION_NEED, 0x6ffffffe) /* Address of table with needed versions */ \
635  _ (VERSION_NEED_COUNT, 0x6fffffff) /* Number of needed versions */ \
636  _ (AUXILIARY, 0x7ffffffd) /* Shared object to load before self */ \
637  _ (FILTER, 0x7fffffff) /* Shared object to get values from */
638 
639 typedef enum
640 {
641 #define _(f,n) ELF_DYNAMIC_ENTRY_##f = (n),
643 #undef _
645 
646 /* Values of `d_un.d_val' in the DT_FLAGS entry. */
647 #define ELF_DYNAMIC_FLAGS_ORIGIN (1 << 0) /* Object may use DF_ORIGIN */
648 #define ELF_DYNAMIC_FLAGS_SYMBOLIC (1 << 1) /* Symbol resolutions starts here */
649 #define ELF_DYNAMIC_FLAGS_TEXT_RELOCATIONS (1 << 2) /* Object contains text relocations */
650 #define ELF_DYNAMIC_FLAGS_BIND_NOW (1 << 3) /* No lazy binding for this object */
651 #define ELF_DYNAMIC_FLAGS_STATIC_TLS (1 << 4) /* Module uses the static TLS model */
652 
653 /* State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1
654  entry in the dynamic section. */
655 #define DF_1_NOW 0x00000001 /* Set RTLD_NOW for this object. */
656 #define DF_1_GLOBAL 0x00000002 /* Set RTLD_GLOBAL for this object. */
657 #define DF_1_GROUP 0x00000004 /* Set RTLD_GROUP for this object. */
658 #define DF_1_NODELETE 0x00000008 /* Set RTLD_NODELETE for this object. */
659 #define DF_1_LOADFLTR 0x00000010 /* Trigger filtee loading at runtime. */
660 #define DF_1_INITFIRST 0x00000020 /* Set RTLD_INITFIRST for this object */
661 #define DF_1_NOOPEN 0x00000040 /* Set RTLD_NOOPEN for this object. */
662 #define DF_1_ORIGIN 0x00000080 /* $ORIGIN must be handled. */
663 #define DF_1_DIRECT 0x00000100 /* Direct binding enabled. */
664 #define DF_1_TRANS 0x00000200
665 #define DF_1_INTERPOSE 0x00000400 /* Object is used to interpose. */
666 #define DF_1_NODEFLIB 0x00000800 /* Ignore default lib search path. */
667 #define DF_1_NODUMP 0x00001000 /* Object can't be dldump'ed. */
668 #define DF_1_CONFALT 0x00002000 /* Configuration alternative created. */
669 #define DF_1_ENDFILTEE 0x00004000 /* Filtee terminates filters search. */
670 #define DF_1_DISPRELDNE 0x00008000 /* Disp reloc applied at build time. */
671 #define DF_1_DISPRELPND 0x00010000 /* Disp reloc applied at run-time. */
672 
673 /* Flags for the feature selection in DT_FEATURE_1. */
674 #define DTF_1_PARINIT 0x00000001
675 #define DTF_1_CONFEXP 0x00000002
676 
677 /* Flags in the DT_POSFLAG_1 entry effecting only the next DT_* entry. */
678 #define DF_P1_LAZYLOAD 0x00000001 /* Lazyload following object. */
679 #define DF_P1_GROUPPERM 0x00000002 /* Symbols from next object are not
680  generally available. */
681 
682 /* Version definition sections. */
683 typedef struct
684 {
693 
694 typedef struct
695 {
697  u32 next_offset; /* byte offset of ver def aux next entry */
699 
700 /* Version definition flags. */
701 #define ELF_DYNAMIC_VERSION_FILE (1 << 0) /* Version definition of file itself */
702 #define ELF_DYNAMIC_VERSION_WEAK (1 << 1) /* Weak version identifier */
703 
704 /* Version symbol index. */
705 #define ELF_DYNAMIC_VERSYM_LOCAL 0 /* Symbol is local. */
706 #define ELF_DYNAMIC_VERSYM_GLOBAL 1 /* Symbol is global. */
707 #define ELF_DYNAMIC_VERSYM_RESERVED_LO 0xff00 /* Beginning of reserved entries. */
708 #define ELF_DYNAMIC_VERSYM_ELIMINATE 0xff01 /* Symbol is to be eliminated. */
709 
710 /* Version dependency section. */
711 #define foreach_elf_dynamic_version_need_field \
712  _ (u16, version) \
713  _ (u16, aux_count) \
714  _ (u32, file_name_offset) \
715  _ (u32, first_aux_offset) \
716  _ (u32, next_offset)
717 
718 #define foreach_elf_dynamic_version_need_aux_field \
719  _ (u32, hash) \
720  _ (u16, flags) \
721  _ (u16, versym_index) \
722  _ (u32, name) \
723  _ (u32, next_offset)
724 
725 typedef struct
726 {
727 #define _(t,f) t f;
729 #undef _
731 
732 typedef struct
733 {
734 #define _(t,f) t f;
736 #undef _
738 
739 typedef union
740 {
744 
745 /* Note section contents. Each entry in the note section begins with
746  a header of a fixed form. */
747 
748 typedef struct
749 {
753 } elf_note_t;
754 
755 /* Known names of notes. */
756 
757 /* Solaris entries in the note section have this name. */
758 #define ELF_NOTE_SOLARIS "SUNW Solaris"
759 
760 /* Note entries for GNU systems have this name. */
761 #define ELF_NOTE_GNU "GNU"
762 
763 
764 /* Defined types of notes for Solaris. */
765 
766 /* Value of descriptor (one word) is desired pagesize for the binary. */
767 #define ELF_NOTE_PAGESIZE_HINT 1
768 
769 
770 /* Defined note types for GNU systems. */
771 
772 /* ABI information. The descriptor consists of words:
773  word 0: OS descriptor
774  word 1: major version of the ABI
775  word 2: minor version of the ABI
776  word 3: subminor version of the ABI
777 */
778 #ifndef ELF_NOTE_ABI
779 #define ELF_NOTE_ABI 1
780 #endif
781 
782 /* Known OSes. These value can appear in word 0 of an ELF_NOTE_ABI
783  note section entry. */
784 #define ELF_NOTE_OS_LINUX 0
785 #define ELF_NOTE_OS_GNU 1
786 #define ELF_NOTE_OS_SOLARIS2 2
787 #define ELF_NOTE_OS_FREEBSD 3
788 
789 /* AMD x86-64 relocations. */
790 #define foreach_elf_x86_64_relocation_type \
791  _ (NONE, 0) /* No reloc */ \
792  _ (DIRECT_64, 1) /* Direct 64 bit */ \
793  _ (PC_REL_I32, 2) /* PC relative 32 bit signed */ \
794  _ (GOT_REL_32, 3) /* 32 bit GOT entry */ \
795  _ (PLT_REL_32, 4) /* 32 bit PLT address */ \
796  _ (COPY, 5) /* Copy symbol at runtime */ \
797  _ (CREATE_GOT, 6) /* Create GOT entry */ \
798  _ (CREATE_PLT, 7) /* Create PLT entry */ \
799  _ (RELATIVE, 8) /* Adjust by program base */ \
800  _ (PC_REL_I32_GOT, 9) /* 32 bit PC relative offset to GOT */ \
801  _ (DIRECT_U32, 10) /* Direct 32 bit zero extended */ \
802  _ (DIRECT_I32, 11) /* Direct 32 bit sign extended */ \
803  _ (DIRECT_U16, 12) /* Direct 16 bit zero extended */ \
804  _ (PC_REL_I16, 13) /* 16 bit sign extended pc relative */ \
805  _ (DIRECT_I8, 14) /* Direct 8 bit sign extended */ \
806  _ (PC_REL_I8, 15) /* 8 bit sign extended pc relative */ \
807  _ (DTPMOD64, 16) /* ID of module containing symbol */ \
808  _ (DTPOFF64, 17) /* Offset in module's TLS block */ \
809  _ (TPOFF64, 18) /* Offset in initial TLS block */ \
810  _ (TLSGD, 19) /* 32 bit signed PC relative offset to two GOT entries for GD symbol */ \
811  _ (TLSLD, 20) /* 32 bit signed PC relative offset to two GOT entries for LD symbol */ \
812  _ (DTPOFF32, 21) /* Offset in TLS block */ \
813  _ (GOTTPOFF, 22) /* 32 bit signed PC relative offset to GOT entry for IE symbol */ \
814  _ (TPOFF32, 23) /* Offset in initial TLS, block) */
815 
816 typedef struct
817 {
819 
821 
823 
826 
827 always_inline void
829 {
830  vec_free (s->symbols);
832 }
833 
836 {
837  return vec_elt_at_index (t->string_table, sym->name);
838 }
839 
840 typedef struct
841 {
843 
846 
847 always_inline void
849 {
850  vec_free (r->relocations);
851 }
852 
853 typedef struct
854 {
856 
858 
859  /* Index of segments containing this section. */
861 
862  /* Aligned size (included padding not included in
863  header.file_size). */
865 
867 
869 } elf_section_t;
870 
871 typedef struct
872 {
874 
875  /* Sections contained in this segment. */
877 
879 
881 } elf_segment_t;
882 
883 typedef struct
884 {
886 
888 
889  char *file_name;
890 
892 
894 
896 
898 
901 
904 
905  char *interpreter;
906 
917 } elf_main_t;
918 
919 always_inline void
921 {
922  clib_memset (em, 0, sizeof (em[0]));
923 }
924 
925 always_inline void
927 {
928  uword i;
929 
930  for (i = 0; i < vec_len (em->segments); i++)
931  vec_free (em->segments[i].contents);
932  vec_free (em->segments);
933 
934  for (i = 0; i < vec_len (em->sections); i++)
935  vec_free (em->sections[i].contents);
936  vec_free (em->sections);
937 
939  for (i = 0; i < vec_len (em->symbol_tables); i++)
941  for (i = 0; i < vec_len (em->relocation_tables); i++)
943 
945  vec_free (em->interpreter);
946 }
947 
948 always_inline void
949 elf_get_segment_contents (elf_main_t * em, void *data, uword segment_index)
950 {
951  elf_segment_t *g = vec_elt_at_index (em->segments, segment_index);
952  if (!g->contents)
953  vec_add (g->contents, data + g->header.file_offset,
954  g->header.memory_size);
955 }
956 
957 always_inline void *
959  uword section_index, uword elt_size)
960 {
961  elf_section_t *s;
962  void *result;
963 
964  s = vec_elt_at_index (em->sections, section_index);
965 
966  result = 0;
967  if (vec_len (s->contents) > 0)
968  {
969  /* Make vector copy of contents with given element size. */
970  result = _vec_resize (result,
971  vec_len (s->contents) / elt_size,
972  vec_len (s->contents),
973  /* header_bytes */ 0,
974  /* align */ 0);
975  clib_memcpy (result, s->contents, vec_len (s->contents));
976  }
977 
978  return result;
979 }
980 
981 always_inline void
983  uword section_index,
984  void *new_contents, uword n_content_bytes)
985 {
986  elf_section_t *s;
987 
988  s = vec_elt_at_index (em->sections, section_index);
989  vec_free (s->contents);
990  vec_add (s->contents, new_contents, n_content_bytes);
991 }
992 
995 {
997  em->
998  file_header.section_header_string_table_index);
999  return vec_elt_at_index (es->contents, s->header.name);
1000 }
1001 
1004 {
1005  return x;
1006 }
1007 
1010 {
1011  return em->need_byte_swap ? clib_byte_swap_u16 (x) : x;
1012 }
1013 
1016 {
1017  return em->need_byte_swap ? clib_byte_swap_u32 (x) : x;
1018 }
1019 
1022 {
1023  return em->need_byte_swap ? clib_byte_swap_u64 (x) : x;
1024 }
1025 
1026 #define FORMAT_ELF_MAIN_SYMBOLS (1 << 0)
1027 #define FORMAT_ELF_MAIN_RELOCATIONS (1 << 1)
1028 #define FORMAT_ELF_MAIN_DYNAMIC (1 << 2)
1029 
1032 
1033 clib_error_t *elf_read_file (elf_main_t * em, char *file_name);
1034 clib_error_t *elf_write_file (elf_main_t * em, char *file_name);
1035 clib_error_t *elf_delete_named_section (elf_main_t * em, char *section_name);
1036 clib_error_t *elf_parse (elf_main_t * em, void *data, uword data_bytes);
1037 void elf_parse_symbols (elf_main_t * em);
1038 
1039 clib_error_t *elf_get_section_by_name (elf_main_t * em, char *section_name,
1040  elf_section_t ** result);
1042  uword start_address,
1043  elf_section_t ** result);
1044 
1045 void
1047  char *section_name,
1048  elf64_section_header_t * header,
1049  void *contents, uword n_content_bytes);
1051  elf_segment_type_t segment_type);
1053 
1054 #endif /* included_clib_elf_h */
1055 
1056 /*
1057  * fd.io coding-style-patch-verification: ON
1058  *
1059  * Local Variables:
1060  * eval: (c-set-style "gnu")
1061  * End:
1062  */
static void elf_main_free(elf_main_t *em)
Definition: elf.h:926
static u32 elf_swap_u32(elf_main_t *em, u32 x)
Definition: elf.h:1015
elf64_segment_header_t header
Definition: elf.h:873
#define foreach_elf_segment_flag
Definition: elf.h:523
u8 pad[3]
log2 (size of the packing page block)
Definition: bihash_doc.h:61
static u8 * elf_section_name(elf_main_t *em, elf_section_t *s)
Definition: elf.h:994
u8 need_byte_swap
Definition: elf.h:885
u32 verneed_section_index
Definition: elf.h:916
#define foreach_elf_dynamic_entry_type
Definition: elf.h:573
elf_section_flag_t
Definition: elf.h:417
u8 file_version_ident
Definition: elf.h:204
#define foreach_elf32_section_header
Definition: elf.h:242
elf_segment_flag_bit_t
Definition: elf.h:539
#define foreach_elf64_section_header
Definition: elf.h:254
static void elf_symbol_table_free(elf_symbol_table_t *s)
Definition: elf.h:828
elf_data_encoding_t
Definition: elf.h:169
unsigned long u64
Definition: types.h:89
elf_data_encoding_t data_encoding
Definition: elf.h:203
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
u32 index
Definition: elf.h:857
i64 exec_address_change
Definition: elf.h:866
static u32 clib_byte_swap_u32(u32 x)
Definition: byte_order.h:76
#define foreach_elf32_dynamic_entry_header
Definition: elf.h:553
int i
elf_segment_flag_t
Definition: elf.h:546
clib_error_t * elf_read_file(elf_main_t *em, char *file_name)
Definition: elf.c:1329
#define foreach_elf_section_type
Definition: elf.h:354
#define foreach_elf_segment_type
Definition: elf.h:504
u32 dynamic_section_index
Definition: elf.h:912
static u64 elf_swap_u64(elf_main_t *em, u64 x)
Definition: elf.h:1021
elf_section_type_t
Definition: elf.h:402
unsigned char u8
Definition: types.h:56
static void elf_relocation_table_free(elf_relocation_table_t *r)
Definition: elf.h:848
elf_abi_t
Definition: elf.h:178
static u8 elf_swap_u8(elf_main_t *em, u8 x)
Definition: elf.h:1003
clib_error_t * elf_delete_named_section(elf_main_t *em, char *section_name)
Definition: elf.c:1948
u32 descriptor_size
Definition: elf.h:751
#define foreach_elf64_file_header
Definition: elf.h:229
#define clib_memcpy(d, s, n)
Definition: string.h:180
#define vec_add(V, E, N)
Add N elements to end of vector V (no header, unspecified alignment)
Definition: vec.h:599
u8 *() format_function_t(u8 *s, va_list *args)
Definition: format.h:48
elf_architecture_t
Definition: elf.h:190
#define foreach_elf_dynamic_version_need_aux_field
Definition: elf.h:718
u8 * contents
Definition: elf.h:868
#define foreach_elf64_symbol_header
Definition: elf.h:297
uword * section_index_bitmap
Definition: elf.h:876
uword * section_by_name
Definition: elf.h:899
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
static u64 clib_byte_swap_u64(u64 x)
Definition: byte_order.h:101
#define foreach_elf32_segment_header
Definition: elf.h:267
uword elf_delete_segment_with_type(elf_main_t *em, elf_segment_type_t segment_type)
Definition: elf.c:2014
unsigned int u32
Definition: types.h:88
#define foreach_elf_file_class
Definition: elf.h:46
elf_abi_t abi
Definition: elf.h:205
elf_symbol_table_t * symbol_tables
Definition: elf.h:902
#define foreach_elf_dynamic_version_need_field
Definition: elf.h:711
clib_error_t * elf_get_section_by_start_address(elf_main_t *em, uword start_address, elf_section_t **result)
Definition: elf.c:69
elf_dynamic_version_need_aux_t aux
Definition: elf.h:742
elf_segment_t * segments
Definition: elf.h:895
u64 align_size
Definition: elf.h:864
u32 file_version
Definition: elf.h:213
#define foreach_elf_file_type
Definition: elf.h:73
u8 * dynamic_string_table
Definition: elf.h:908
unsigned short u16
Definition: types.h:57
signed long i64
Definition: types.h:78
#define hash_free(h)
Definition: hash.h:310
#define foreach_elf_data_encoding
Definition: elf.h:49
Definition: elf.h:563
#define foreach_elf64_segment_header
Definition: elf.h:277
static void elf_get_segment_contents(elf_main_t *em, void *data, uword segment_index)
Definition: elf.h:949
#define always_inline
Definition: ipsec.h:28
void elf_create_section_with_contents(elf_main_t *em, char *section_name, elf64_section_header_t *header, void *contents, uword n_content_bytes)
Definition: elf.c:1963
clib_error_t * elf_get_section_by_name(elf_main_t *em, char *section_name, elf_section_t **result)
Definition: elf.c:47
#define foreach_elf32_file_header
Definition: elf.h:217
u64 symbol_and_type
Definition: elf.h:488
static void elf_set_section_contents(elf_main_t *em, uword section_index, void *new_contents, uword n_content_bytes)
Definition: elf.h:982
u8 * contents
Definition: elf.h:880
u32 symbol_and_type
Definition: elf.h:481
elf_first_header_t first_header
Definition: elf.h:891
elf_section_flag_bit_t
Definition: elf.h:410
u32 versym_section_index
Definition: elf.h:914
Definition: elf.h:567
clib_error_t * elf_parse(elf_main_t *em, void *data, uword data_bytes)
Definition: elf.c:978
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:342
#define foreach_elf32_symbol_header
Definition: elf.h:288
elf_relocation_with_addend_t * relocations
Definition: elf.h:842
u32 section_index
Definition: elf.h:820
u32 index
Definition: elf.h:878
elf_architecture_t architecture
Definition: elf.h:211
elf64_symbol_t * symbols
Definition: elf.h:818
static void elf_main_init(elf_main_t *em)
Definition: elf.h:920
u32 dynamic_symbol_table_section_index
Definition: elf.h:910
signed int i32
Definition: types.h:77
u8 data[128]
Definition: ipsec_types.api:87
char * file_name
Definition: elf.h:889
static void * elf_get_section_contents(elf_main_t *em, uword section_index, uword elt_size)
Definition: elf.h:958
elf64_dynamic_entry_t * dynamic_entries
Definition: elf.h:907
elf_segment_type_t
Definition: elf.h:532
u8 parsed_symbols
Definition: elf.h:887
elf_relocation_table_t * relocation_tables
Definition: elf.h:903
elf_section_t * sections
Definition: elf.h:897
u16 bound_to
Definition: elf.h:459
u32 type
Definition: elf.h:752
u8 * string_table
Definition: elf.h:822
elf_dynamic_version_need_t need
Definition: elf.h:741
elf_file_type_t
Definition: elf.h:183
format_function_t format_elf_main
Definition: elf.h:1030
static u8 * elf_symbol_name(elf_symbol_table_t *t, elf64_symbol_t *sym)
Definition: elf.h:835
#define foreach_elf64_dynamic_entry_header
Definition: elf.h:557
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
void elf_parse_symbols(elf_main_t *em)
Definition: elf.c:869
uword * symbol_by_name
Definition: elf.h:824
u64 uword
Definition: types.h:112
clib_error_t * elf_write_file(elf_main_t *em, char *file_name)
Definition: elf.c:1752
uword * segment_index_bitmap
Definition: elf.h:860
elf64_file_header_t file_header
Definition: elf.h:893
#define foreach_elf_architecture
Definition: elf.h:85
format_function_t format_elf_symbol
Definition: elf.h:1031
#define foreach_elf_abi
Definition: elf.h:57
elf_file_class_t
Definition: elf.h:164
u32 dynamic_symbol_table_index
Definition: elf.h:911
char * interpreter
Definition: elf.h:905
elf64_section_header_t header
Definition: elf.h:855
elf_dynamic_version_need_union_t * verneed
Definition: elf.h:915
u16 * versym
Definition: elf.h:913
u32 name_size
Definition: elf.h:750
void elf_set_dynamic_entries(elf_main_t *em)
Definition: elf.c:899
static u16 elf_swap_u16(elf_main_t *em, u16 x)
Definition: elf.h:1009
elf_file_type_t file_type
Definition: elf.h:210
static u16 clib_byte_swap_u16(u16 x)
Definition: byte_order.h:57
elf_dynamic_entry_type_t
Definition: elf.h:639
#define foreach_elf_section_flag
Definition: elf.h:386
elf_file_class_t file_class
Definition: elf.h:202
CLIB vectors are ubiquitous dynamically resized arrays with by user defined "headers".
uword * section_by_start_address
Definition: elf.h:900
u32 dynamic_string_table_section_index
Definition: elf.h:909