1 /*- 2 * Copyright (c) 2007 John Birrell (jb@freebsd.org) 3 * Copyright (c) 2009-2014 Kai Wang 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $Id: _libdwarf.h 3298 2016-01-09 15:43:31Z jkoshy $ 28 */ 29 30 #ifndef __LIBDWARF_H_ 31 #define __LIBDWARF_H_ 32 33 #include <sys/param.h> 34 #include <sys/queue.h> 35 #include <assert.h> 36 #include <limits.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <gelf.h> 41 #include "dwarf.h" 42 #include "libdwarf.h" 43 #include "uthash.h" 44 45 #include "_elftc.h" 46 47 #define DWARF_DIE_HASH_SIZE 8191 48 49 struct _libdwarf_globals { 50 Dwarf_Handler errhand; 51 Dwarf_Ptr errarg; 52 int applyreloc; 53 }; 54 55 extern struct _libdwarf_globals _libdwarf; 56 57 #define _DWARF_SET_ERROR(_d, _e, _err, _elf_err) \ 58 _dwarf_set_error(_d, _e, _err, _elf_err, __func__, __LINE__) 59 #define DWARF_SET_ERROR(_d, _e, _err) \ 60 _DWARF_SET_ERROR(_d, _e, _err, 0) 61 #define DWARF_SET_ELF_ERROR(_d, _e) \ 62 _DWARF_SET_ERROR(_d, _e, DW_DLE_ELF, elf_errno()) 63 64 /* 65 * Convenient macros for producer bytes stream generation. 66 */ 67 #define WRITE_VALUE(value, bytes) \ 68 dbg->write_alloc(&ds->ds_data, &ds->ds_cap, &ds->ds_size, \ 69 (value), (bytes), error) 70 #define WRITE_ULEB128(value) \ 71 _dwarf_write_uleb128_alloc(&ds->ds_data, &ds->ds_cap, \ 72 &ds->ds_size, (value), error) 73 #define WRITE_SLEB128(value) \ 74 _dwarf_write_sleb128_alloc(&ds->ds_data, &ds->ds_cap, \ 75 &ds->ds_size, (value), error) 76 #define WRITE_STRING(string) \ 77 _dwarf_write_string_alloc(&ds->ds_data, &ds->ds_cap, \ 78 &ds->ds_size, (string), error) 79 #define WRITE_BLOCK(blk, size) \ 80 _dwarf_write_block_alloc(&ds->ds_data, &ds->ds_cap, \ 81 &ds->ds_size, (blk), (size), error) 82 #define WRITE_PADDING(byte, cnt) \ 83 _dwarf_write_padding_alloc(&ds->ds_data, &ds->ds_cap, \ 84 &ds->ds_size, (byte), (cnt), error) 85 #define RCHECK(expr) \ 86 do { \ 87 ret = expr; \ 88 if (ret != DW_DLE_NONE) \ 89 goto gen_fail; \ 90 } while(0) 91 92 typedef struct _Dwarf_CU *Dwarf_CU; 93 94 struct _Dwarf_AttrDef { 95 Dwarf_Half ad_attrib; /* DW_AT_XXX */ 96 Dwarf_Half ad_form; /* DW_FORM_XXX */ 97 uint64_t ad_offset; /* Offset in abbrev section. */ 98 STAILQ_ENTRY(_Dwarf_AttrDef) ad_next; /* Next attribute define. */ 99 }; 100 101 struct _Dwarf_Attribute { 102 Dwarf_Die at_die; /* Ptr to containing DIE. */ 103 Dwarf_Die at_refdie; /* Ptr to reference DIE. */ 104 uint64_t at_offset; /* Offset in info section. */ 105 Dwarf_Half at_attrib; /* DW_AT_XXX */ 106 Dwarf_Half at_form; /* DW_FORM_XXX */ 107 int at_indirect; /* Has indirect form. */ 108 union { 109 uint64_t u64; /* Unsigned value. */ 110 int64_t s64; /* Signed value. */ 111 char *s; /* String. */ 112 uint8_t *u8p; /* Block data. */ 113 } u[2]; /* Value. */ 114 Dwarf_Block at_block; /* Block. */ 115 Dwarf_Locdesc *at_ld; /* at value is locdesc. */ 116 Dwarf_P_Expr at_expr; /* at value is expr. */ 117 uint64_t at_relsym; /* Relocation symbol index. */ 118 const char *at_relsec; /* Rel. to dwarf section. */ 119 STAILQ_ENTRY(_Dwarf_Attribute) at_next; /* Next attribute. */ 120 }; 121 122 struct _Dwarf_Abbrev { 123 uint64_t ab_entry; /* Abbrev entry. */ 124 uint64_t ab_tag; /* Tag: DW_TAG_ */ 125 uint8_t ab_children; /* DW_CHILDREN_no or DW_CHILDREN_yes */ 126 uint64_t ab_offset; /* Offset in abbrev section. */ 127 uint64_t ab_length; /* Length of this abbrev entry. */ 128 uint64_t ab_atnum; /* Number of attribute defines. */ 129 UT_hash_handle ab_hh; /* Uthash handle. */ 130 STAILQ_HEAD(, _Dwarf_AttrDef) ab_attrdef; /* List of attribute defs. */ 131 }; 132 133 struct _Dwarf_Die { 134 Dwarf_Die die_parent; /* Parent DIE. */ 135 Dwarf_Die die_child; /* First child DIE. */ 136 Dwarf_Die die_left; /* Left sibling DIE. */ 137 Dwarf_Die die_right; /* Right sibling DIE. */ 138 uint64_t die_offset; /* DIE offset in section. */ 139 uint64_t die_next_off; /* Next DIE offset in section. */ 140 uint64_t die_abnum; /* Abbrev number. */ 141 Dwarf_Abbrev die_ab; /* Abbrev pointer. */ 142 Dwarf_Tag die_tag; /* DW_TAG_ */ 143 Dwarf_Debug die_dbg; /* Dwarf_Debug pointer. */ 144 Dwarf_CU die_cu; /* Compilation unit pointer. */ 145 char *die_name; /* Ptr to the name string. */ 146 Dwarf_Attribute *die_attrarray; /* Array of attributes. */ 147 STAILQ_HEAD(, _Dwarf_Attribute) die_attr; /* List of attributes. */ 148 STAILQ_ENTRY(_Dwarf_Die) die_pro_next; /* Next die in pro-die list. */ 149 }; 150 151 struct _Dwarf_P_Expr_Entry { 152 Dwarf_Loc ee_loc; /* Location expression. */ 153 Dwarf_Unsigned ee_sym; /* Optional related reloc sym index. */ 154 STAILQ_ENTRY(_Dwarf_P_Expr_Entry) ee_next; /* Next entry in list. */ 155 }; 156 157 struct _Dwarf_P_Expr { 158 Dwarf_Debug pe_dbg; /* Dwarf_Debug pointer. */ 159 uint8_t *pe_block; /* Expression block data. */ 160 int pe_invalid; /* Block data is up-to-date or not. */ 161 Dwarf_Unsigned pe_length; /* Length of the block. */ 162 STAILQ_HEAD(, _Dwarf_P_Expr_Entry) pe_eelist; /* List of entries. */ 163 STAILQ_ENTRY(_Dwarf_P_Expr) pe_next; /* Next expr in list. */ 164 }; 165 166 struct _Dwarf_Line { 167 Dwarf_LineInfo ln_li; /* Ptr to line info. */ 168 Dwarf_Addr ln_addr; /* Line address. */ 169 Dwarf_Unsigned ln_symndx; /* Symbol index for relocation. */ 170 Dwarf_Unsigned ln_fileno; /* File number. */ 171 Dwarf_Unsigned ln_lineno; /* Line number. */ 172 Dwarf_Signed ln_column; /* Column number. */ 173 Dwarf_Bool ln_bblock; /* Basic block flag. */ 174 Dwarf_Bool ln_stmt; /* Begin statement flag. */ 175 Dwarf_Bool ln_endseq; /* End sequence flag. */ 176 STAILQ_ENTRY(_Dwarf_Line) ln_next; /* Next line in list. */ 177 }; 178 179 struct _Dwarf_LineFile { 180 char *lf_fname; /* Filename. */ 181 char *lf_fullpath; /* Full pathname of the file. */ 182 Dwarf_Unsigned lf_dirndx; /* Dir index. */ 183 Dwarf_Unsigned lf_mtime; /* Modification time. */ 184 Dwarf_Unsigned lf_size; /* File size. */ 185 STAILQ_ENTRY(_Dwarf_LineFile) lf_next; /* Next file in list. */ 186 }; 187 188 struct _Dwarf_LineInfo { 189 Dwarf_Unsigned li_length; /* Length of line info data. */ 190 Dwarf_Half li_version; /* Version of line info. */ 191 Dwarf_Unsigned li_hdrlen; /* Length of line info header. */ 192 Dwarf_Small li_minlen; /* Minimum instrutction length. */ 193 Dwarf_Small li_maxop; /* Maximum operations per inst. */ 194 Dwarf_Small li_defstmt; /* Default value of is_stmt. */ 195 int8_t li_lbase; /* Line base for special opcode. */ 196 Dwarf_Small li_lrange; /* Line range for special opcode. */ 197 Dwarf_Small li_opbase; /* Fisrt std opcode number. */ 198 Dwarf_Small *li_oplen; /* Array of std opcode len. */ 199 char **li_incdirs; /* Array of include dirs. */ 200 Dwarf_Unsigned li_inclen; /* Length of inc dir array. */ 201 char **li_lfnarray; /* Array of file names. */ 202 Dwarf_Unsigned li_lflen; /* Length of filename array. */ 203 STAILQ_HEAD(, _Dwarf_LineFile) li_lflist; /* List of files. */ 204 Dwarf_Line *li_lnarray; /* Array of lines. */ 205 Dwarf_Unsigned li_lnlen; /* Length of the line array. */ 206 STAILQ_HEAD(, _Dwarf_Line) li_lnlist; /* List of lines. */ 207 }; 208 209 struct _Dwarf_NamePair { 210 Dwarf_NameTbl np_nt; /* Ptr to containing name table. */ 211 Dwarf_Die np_die; /* Ptr to Ref. Die. */ 212 Dwarf_Unsigned np_offset; /* Offset in CU. */ 213 char *np_name; /* Object/Type name. */ 214 STAILQ_ENTRY(_Dwarf_NamePair) np_next; /* Next pair in the list. */ 215 }; 216 217 struct _Dwarf_NameTbl { 218 Dwarf_Unsigned nt_length; /* Name lookup table length. */ 219 Dwarf_Half nt_version; /* Name lookup table version. */ 220 Dwarf_CU nt_cu; /* Ptr to Ref. CU. */ 221 Dwarf_Off nt_cu_offset; /* Ref. CU offset in .debug_info */ 222 Dwarf_Unsigned nt_cu_length; /* Ref. CU length. */ 223 STAILQ_HEAD(, _Dwarf_NamePair) nt_nplist; /* List of offset+name pairs. */ 224 STAILQ_ENTRY(_Dwarf_NameTbl) nt_next; /* Next name table in the list. */ 225 }; 226 227 struct _Dwarf_NameSec { 228 STAILQ_HEAD(, _Dwarf_NameTbl) ns_ntlist; /* List of name tables. */ 229 Dwarf_NamePair *ns_array; /* Array of pairs of all tables. */ 230 Dwarf_Unsigned ns_len; /* Length of the pair array. */ 231 }; 232 233 struct _Dwarf_Fde { 234 Dwarf_Debug fde_dbg; /* Ptr to containing dbg. */ 235 Dwarf_Cie fde_cie; /* Ptr to associated CIE. */ 236 Dwarf_FrameSec fde_fs; /* Ptr to containing .debug_frame. */ 237 Dwarf_Ptr fde_addr; /* Ptr to start of the FDE. */ 238 Dwarf_Unsigned fde_offset; /* Offset of the FDE. */ 239 Dwarf_Unsigned fde_length; /* Length of the FDE. */ 240 Dwarf_Unsigned fde_cieoff; /* Offset of associated CIE. */ 241 Dwarf_Unsigned fde_initloc; /* Initial location. */ 242 Dwarf_Unsigned fde_adrange; /* Address range. */ 243 Dwarf_Unsigned fde_auglen; /* Augmentation length. */ 244 uint8_t *fde_augdata; /* Augmentation data. */ 245 uint8_t *fde_inst; /* Instructions. */ 246 Dwarf_Unsigned fde_instlen; /* Length of instructions. */ 247 Dwarf_Unsigned fde_instcap; /* Capacity of inst buffer. */ 248 Dwarf_Unsigned fde_symndx; /* Symbol index for relocation. */ 249 Dwarf_Unsigned fde_esymndx; /* End symbol index for relocation. */ 250 Dwarf_Addr fde_eoff; /* Offset from the end symbol. */ 251 STAILQ_ENTRY(_Dwarf_Fde) fde_next; /* Next FDE in list. */ 252 }; 253 254 struct _Dwarf_Cie { 255 Dwarf_Debug cie_dbg; /* Ptr to containing dbg. */ 256 Dwarf_Unsigned cie_index; /* Index of the CIE. */ 257 Dwarf_Unsigned cie_offset; /* Offset of the CIE. */ 258 Dwarf_Unsigned cie_length; /* Length of the CIE. */ 259 Dwarf_Half cie_version; /* CIE version. */ 260 uint8_t *cie_augment; /* CIE augmentation (UTF-8). */ 261 Dwarf_Unsigned cie_ehdata; /* Optional EH Data. */ 262 uint8_t cie_addrsize; /* Address size. (DWARF4) */ 263 uint8_t cie_segmentsize; /* Segment size. (DWARF4) */ 264 Dwarf_Unsigned cie_caf; /* Code alignment factor. */ 265 Dwarf_Signed cie_daf; /* Data alignment factor. */ 266 Dwarf_Unsigned cie_ra; /* Return address register. */ 267 Dwarf_Unsigned cie_auglen; /* Augmentation length. */ 268 uint8_t *cie_augdata; /* Augmentation data; */ 269 uint8_t cie_fde_encode; /* FDE PC start/range encode. */ 270 Dwarf_Ptr cie_initinst; /* Initial instructions. */ 271 Dwarf_Unsigned cie_instlen; /* Length of init instructions. */ 272 STAILQ_ENTRY(_Dwarf_Cie) cie_next; /* Next CIE in list. */ 273 }; 274 275 struct _Dwarf_FrameSec { 276 STAILQ_HEAD(, _Dwarf_Cie) fs_cielist; /* List of CIE. */ 277 STAILQ_HEAD(, _Dwarf_Fde) fs_fdelist; /* List of FDE. */ 278 Dwarf_Cie *fs_ciearray; /* Array of CIE. */ 279 Dwarf_Unsigned fs_cielen; /* Length of CIE array. */ 280 Dwarf_Fde *fs_fdearray; /* Array of FDE.*/ 281 Dwarf_Unsigned fs_fdelen; /* Length of FDE array. */ 282 }; 283 284 struct _Dwarf_Arange { 285 Dwarf_ArangeSet ar_as; /* Ptr to the set it belongs to. */ 286 Dwarf_Unsigned ar_address; /* Start PC. */ 287 Dwarf_Unsigned ar_range; /* PC range. */ 288 Dwarf_Unsigned ar_symndx; /* First symbol index for reloc. */ 289 Dwarf_Unsigned ar_esymndx; /* Second symbol index for reloc. */ 290 Dwarf_Addr ar_eoff; /* Offset from second symbol. */ 291 STAILQ_ENTRY(_Dwarf_Arange) ar_next; /* Next arange in list. */ 292 }; 293 294 struct _Dwarf_ArangeSet { 295 Dwarf_Unsigned as_length; /* Length of the arange set. */ 296 Dwarf_Half as_version; /* Version of the arange set. */ 297 Dwarf_Off as_cu_offset; /* Offset of associated CU. */ 298 Dwarf_CU as_cu; /* Ptr to associated CU. */ 299 Dwarf_Small as_addrsz; /* Target address size. */ 300 Dwarf_Small as_segsz; /* Target segment size. */ 301 STAILQ_HEAD (, _Dwarf_Arange) as_arlist; /* List of ae entries. */ 302 STAILQ_ENTRY(_Dwarf_ArangeSet) as_next; /* Next set in list. */ 303 }; 304 305 struct _Dwarf_MacroSet { 306 Dwarf_Macro_Details *ms_mdlist; /* Array of macinfo entries. */ 307 Dwarf_Unsigned ms_cnt; /* Length of the array. */ 308 STAILQ_ENTRY(_Dwarf_MacroSet) ms_next; /* Next set in list. */ 309 }; 310 311 struct _Dwarf_Rangelist { 312 Dwarf_CU rl_cu; /* Ptr to associated CU. */ 313 Dwarf_Unsigned rl_offset; /* Offset of the rangelist. */ 314 Dwarf_Ranges *rl_rgarray; /* Array of ranges. */ 315 Dwarf_Unsigned rl_rglen; /* Length of the ranges array. */ 316 STAILQ_ENTRY(_Dwarf_Rangelist) rl_next; /* Next rangelist in list. */ 317 }; 318 319 struct _Dwarf_CU { 320 Dwarf_Debug cu_dbg; /* Ptr to containing dbg. */ 321 Dwarf_Off cu_offset; /* Offset to the this CU. */ 322 uint32_t cu_length; /* Length of CU data. */ 323 uint16_t cu_length_size; /* Size in bytes of the length field. */ 324 uint16_t cu_version; /* DWARF version. */ 325 uint64_t cu_abbrev_offset; /* Offset into .debug_abbrev. */ 326 uint64_t cu_abbrev_offset_cur; /* Current abbrev offset. */ 327 int cu_abbrev_loaded; /* Abbrev table parsed. */ 328 uint64_t cu_abbrev_cnt; /* Abbrev entry count. */ 329 uint64_t cu_lineno_offset; /* Offset into .debug_lineno. */ 330 uint8_t cu_pointer_size;/* Number of bytes in pointer. */ 331 uint8_t cu_dwarf_size; /* CU section dwarf size. */ 332 Dwarf_Sig8 cu_type_sig; /* Type unit's signature. */ 333 uint64_t cu_type_offset; /* Type unit's type offset. */ 334 Dwarf_Off cu_next_offset; /* Offset to the next CU. */ 335 uint64_t cu_1st_offset; /* First DIE offset. */ 336 int cu_pass2; /* Two pass DIE traverse. */ 337 Dwarf_LineInfo cu_lineinfo; /* Ptr to Dwarf_LineInfo. */ 338 Dwarf_Abbrev cu_abbrev_hash; /* Abbrev hash table. */ 339 Dwarf_Bool cu_is_info; /* Compilation/type unit flag. */ 340 STAILQ_ENTRY(_Dwarf_CU) cu_next; /* Next compilation unit. */ 341 }; 342 343 typedef struct _Dwarf_Section { 344 const char *ds_name; /* Section name. */ 345 Dwarf_Small *ds_data; /* Section data. */ 346 Dwarf_Unsigned ds_addr; /* Section virtual addr. */ 347 Dwarf_Unsigned ds_size; /* Section size. */ 348 } Dwarf_Section; 349 350 typedef struct _Dwarf_P_Section { 351 char *ds_name; /* Section name. */ 352 Dwarf_Small *ds_data; /* Section data. */ 353 Dwarf_Unsigned ds_size; /* Section size. */ 354 Dwarf_Unsigned ds_cap; /* Section capacity. */ 355 Dwarf_Unsigned ds_ndx; /* ELF section index. */ 356 Dwarf_Unsigned ds_symndx; /* Section symbol index. (for reloc) */ 357 STAILQ_ENTRY(_Dwarf_P_Section) ds_next; /* Next section in the list. */ 358 } *Dwarf_P_Section; 359 360 typedef struct _Dwarf_Rel_Entry { 361 unsigned char dre_type; /* Reloc type. */ 362 unsigned char dre_length; /* Reloc storage unit length. */ 363 Dwarf_Unsigned dre_offset; /* Reloc storage unit offset. */ 364 Dwarf_Unsigned dre_addend; /* Reloc addend. */ 365 Dwarf_Unsigned dre_symndx; /* Reloc symbol index. */ 366 const char *dre_secname; /* Refer to some debug section. */ 367 STAILQ_ENTRY(_Dwarf_Rel_Entry) dre_next; /* Next reloc entry. */ 368 } *Dwarf_Rel_Entry; 369 370 typedef struct _Dwarf_Rel_Section { 371 struct _Dwarf_P_Section *drs_ds; /* Ptr to actual reloc ELF section. */ 372 struct _Dwarf_P_Section *drs_ref; /* Which debug section it refers. */ 373 struct Dwarf_Relocation_Data_s *drs_drd; /* Reloc data array. */ 374 STAILQ_HEAD(, _Dwarf_Rel_Entry) drs_dre; /* Reloc entry list. */ 375 Dwarf_Unsigned drs_drecnt; /* Count of entries. */ 376 Dwarf_Unsigned drs_size; /* Size of ELF section in bytes. */ 377 int drs_addend; /* Elf_Rel or Elf_Rela */ 378 STAILQ_ENTRY(_Dwarf_Rel_Section) drs_next; /* Next reloc section. */ 379 } *Dwarf_Rel_Section; 380 381 typedef struct { 382 Elf_Data *ed_data; 383 void *ed_alloc; 384 } Dwarf_Elf_Data; 385 386 typedef struct { 387 Elf *eo_elf; 388 GElf_Ehdr eo_ehdr; 389 GElf_Shdr *eo_shdr; 390 Dwarf_Elf_Data *eo_data; 391 Dwarf_Unsigned eo_seccnt; 392 size_t eo_strndx; 393 Dwarf_Obj_Access_Methods eo_methods; 394 } Dwarf_Elf_Object; 395 396 struct _Dwarf_Debug { 397 Dwarf_Obj_Access_Interface *dbg_iface; 398 Dwarf_Section *dbg_section; /* Dwarf section list. */ 399 Dwarf_Section *dbg_info_sec; /* Pointer to info section. */ 400 Dwarf_Off dbg_info_off; /* Current info section offset. */ 401 Dwarf_Section *dbg_types_sec; /* Pointer to type section. */ 402 Dwarf_Off dbg_types_off; /* Current types section offset. */ 403 Dwarf_Unsigned dbg_seccnt; /* Total number of dwarf sections. */ 404 int dbg_mode; /* Access mode. */ 405 int dbg_pointer_size; /* Object address size. */ 406 int dbg_offset_size; /* DWARF offset size. */ 407 int dbg_info_loaded; /* Flag indicating all CU loaded. */ 408 int dbg_types_loaded; /* Flag indicating all TU loaded. */ 409 Dwarf_Half dbg_machine; /* ELF machine architecture. */ 410 Dwarf_Handler dbg_errhand; /* Error handler. */ 411 Dwarf_Ptr dbg_errarg; /* Argument to the error handler. */ 412 STAILQ_HEAD(, _Dwarf_CU) dbg_cu;/* List of compilation units. */ 413 STAILQ_HEAD(, _Dwarf_CU) dbg_tu;/* List of type units. */ 414 Dwarf_CU dbg_cu_current; /* Ptr to the current CU. */ 415 Dwarf_CU dbg_tu_current; /* Ptr to the current TU. */ 416 Dwarf_NameSec dbg_globals; /* Ptr to pubnames lookup section. */ 417 Dwarf_NameSec dbg_pubtypes; /* Ptr to pubtypes lookup section. */ 418 Dwarf_NameSec dbg_weaks; /* Ptr to weaknames lookup section. */ 419 Dwarf_NameSec dbg_funcs; /* Ptr to static funcs lookup sect. */ 420 Dwarf_NameSec dbg_vars; /* Ptr to static vars lookup sect. */ 421 Dwarf_NameSec dbg_types; /* Ptr to types lookup section. */ 422 Dwarf_FrameSec dbg_frame; /* Ptr to .debug_frame section. */ 423 Dwarf_FrameSec dbg_eh_frame; /* Ptr to .eh_frame section. */ 424 STAILQ_HEAD(, _Dwarf_ArangeSet) dbg_aslist; /* List of arange set. */ 425 Dwarf_Arange *dbg_arange_array; /* Array of arange. */ 426 Dwarf_Unsigned dbg_arange_cnt; /* Length of the arange array. */ 427 char *dbg_strtab; /* Dwarf string table. */ 428 Dwarf_Unsigned dbg_strtab_cap; /* Dwarf string table capacity. */ 429 Dwarf_Unsigned dbg_strtab_size; /* Dwarf string table size. */ 430 STAILQ_HEAD(, _Dwarf_MacroSet) dbg_mslist; /* List of macro set. */ 431 STAILQ_HEAD(, _Dwarf_Rangelist) dbg_rllist; /* List of rangelist. */ 432 uint64_t (*read)(uint8_t *, uint64_t *, int); 433 void (*write)(uint8_t *, uint64_t *, uint64_t, int); 434 int (*write_alloc)(uint8_t **, uint64_t *, uint64_t *, 435 uint64_t, int, Dwarf_Error *); 436 uint64_t (*decode)(uint8_t **, int); 437 438 Dwarf_Half dbg_frame_rule_table_size; 439 Dwarf_Half dbg_frame_rule_initial_value; 440 Dwarf_Half dbg_frame_cfa_value; 441 Dwarf_Half dbg_frame_same_value; 442 Dwarf_Half dbg_frame_undefined_value; 443 444 Dwarf_Regtable3 *dbg_internal_reg_table; 445 446 /* 447 * Fields used by libdwarf producer. 448 */ 449 450 Dwarf_Unsigned dbgp_flags; 451 Dwarf_Unsigned dbgp_isa; 452 Dwarf_Callback_Func dbgp_func; 453 Dwarf_Callback_Func_b dbgp_func_b; 454 Dwarf_Die dbgp_root_die; 455 STAILQ_HEAD(, _Dwarf_Die) dbgp_dielist; 456 STAILQ_HEAD(, _Dwarf_P_Expr) dbgp_pelist; 457 Dwarf_LineInfo dbgp_lineinfo; 458 Dwarf_ArangeSet dbgp_as; 459 Dwarf_Macro_Details *dbgp_mdlist; 460 Dwarf_Unsigned dbgp_mdcnt; 461 STAILQ_HEAD(, _Dwarf_Cie) dbgp_cielist; 462 STAILQ_HEAD(, _Dwarf_Fde) dbgp_fdelist; 463 Dwarf_Unsigned dbgp_cielen; 464 Dwarf_Unsigned dbgp_fdelen; 465 Dwarf_NameTbl dbgp_pubs; 466 Dwarf_NameTbl dbgp_weaks; 467 Dwarf_NameTbl dbgp_funcs; 468 Dwarf_NameTbl dbgp_types; 469 Dwarf_NameTbl dbgp_vars; 470 STAILQ_HEAD(, _Dwarf_P_Section) dbgp_seclist; 471 Dwarf_Unsigned dbgp_seccnt; 472 Dwarf_P_Section dbgp_secpos; 473 Dwarf_P_Section dbgp_info; 474 STAILQ_HEAD(, _Dwarf_Rel_Section) dbgp_drslist; 475 Dwarf_Unsigned dbgp_drscnt; 476 Dwarf_Rel_Section dbgp_drspos; 477 }; 478 479 /* 480 * Internal function prototypes. 481 */ 482 483 int _dwarf_abbrev_add(Dwarf_CU, uint64_t, uint64_t, uint8_t, 484 uint64_t, Dwarf_Abbrev *, Dwarf_Error *); 485 void _dwarf_abbrev_cleanup(Dwarf_CU); 486 int _dwarf_abbrev_find(Dwarf_CU, uint64_t, Dwarf_Abbrev *, 487 Dwarf_Error *); 488 int _dwarf_abbrev_gen(Dwarf_P_Debug, Dwarf_Error *); 489 int _dwarf_abbrev_parse(Dwarf_Debug, Dwarf_CU, Dwarf_Unsigned *, 490 Dwarf_Abbrev *, Dwarf_Error *); 491 int _dwarf_add_AT_dataref(Dwarf_P_Debug, Dwarf_P_Die, Dwarf_Half, 492 Dwarf_Unsigned, Dwarf_Unsigned, const char *, 493 Dwarf_P_Attribute *, Dwarf_Error *); 494 int _dwarf_add_string_attr(Dwarf_P_Die, Dwarf_P_Attribute *, 495 Dwarf_Half, char *, Dwarf_Error *); 496 int _dwarf_alloc(Dwarf_Debug *, int, Dwarf_Error *); 497 void _dwarf_arange_cleanup(Dwarf_Debug); 498 int _dwarf_arange_gen(Dwarf_P_Debug, Dwarf_Error *); 499 int _dwarf_arange_init(Dwarf_Debug, Dwarf_Error *); 500 void _dwarf_arange_pro_cleanup(Dwarf_P_Debug); 501 int _dwarf_attr_alloc(Dwarf_Die, Dwarf_Attribute *, Dwarf_Error *); 502 Dwarf_Attribute _dwarf_attr_find(Dwarf_Die, Dwarf_Half); 503 int _dwarf_attr_gen(Dwarf_P_Debug, Dwarf_P_Section, Dwarf_Rel_Section, 504 Dwarf_CU, Dwarf_Die, int, Dwarf_Error *); 505 int _dwarf_attr_init(Dwarf_Debug, Dwarf_Section *, uint64_t *, int, 506 Dwarf_CU, Dwarf_Die, Dwarf_AttrDef, uint64_t, int, 507 Dwarf_Error *); 508 int _dwarf_attrdef_add(Dwarf_Debug, Dwarf_Abbrev, uint64_t, 509 uint64_t, uint64_t, Dwarf_AttrDef *, Dwarf_Error *); 510 uint64_t _dwarf_decode_lsb(uint8_t **, int); 511 uint64_t _dwarf_decode_msb(uint8_t **, int); 512 int64_t _dwarf_decode_sleb128(uint8_t **); 513 uint64_t _dwarf_decode_uleb128(uint8_t **); 514 void _dwarf_deinit(Dwarf_Debug); 515 int _dwarf_die_alloc(Dwarf_Debug, Dwarf_Die *, Dwarf_Error *); 516 int _dwarf_die_count_links(Dwarf_P_Die, Dwarf_P_Die, 517 Dwarf_P_Die, Dwarf_P_Die); 518 Dwarf_Die _dwarf_die_find(Dwarf_Die, Dwarf_Unsigned); 519 int _dwarf_die_gen(Dwarf_P_Debug, Dwarf_CU, Dwarf_Rel_Section, 520 Dwarf_Error *); 521 void _dwarf_die_link(Dwarf_P_Die, Dwarf_P_Die, Dwarf_P_Die, 522 Dwarf_P_Die, Dwarf_P_Die); 523 int _dwarf_die_parse(Dwarf_Debug, Dwarf_Section *, Dwarf_CU, int, 524 uint64_t, uint64_t, Dwarf_Die *, int, Dwarf_Error *); 525 void _dwarf_die_pro_cleanup(Dwarf_P_Debug); 526 void _dwarf_elf_deinit(Dwarf_Debug); 527 int _dwarf_elf_init(Dwarf_Debug, Elf *, Dwarf_Error *); 528 int _dwarf_elf_load_section(void *, Dwarf_Half, Dwarf_Small **, 529 int *); 530 Dwarf_Endianness _dwarf_elf_get_byte_order(void *); 531 Dwarf_Small _dwarf_elf_get_length_size(void *); 532 Dwarf_Small _dwarf_elf_get_pointer_size(void *); 533 Dwarf_Unsigned _dwarf_elf_get_section_count(void *); 534 int _dwarf_elf_get_section_info(void *, Dwarf_Half, 535 Dwarf_Obj_Access_Section *, int *); 536 void _dwarf_expr_cleanup(Dwarf_P_Debug); 537 int _dwarf_expr_into_block(Dwarf_P_Expr, Dwarf_Error *); 538 Dwarf_Section *_dwarf_find_next_types_section(Dwarf_Debug, Dwarf_Section *); 539 Dwarf_Section *_dwarf_find_section(Dwarf_Debug, const char *); 540 void _dwarf_frame_cleanup(Dwarf_Debug); 541 int _dwarf_frame_fde_add_inst(Dwarf_P_Fde, Dwarf_Small, 542 Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Error *); 543 int _dwarf_frame_gen(Dwarf_P_Debug, Dwarf_Error *); 544 int _dwarf_frame_get_fop(Dwarf_Debug, uint8_t, uint8_t *, 545 Dwarf_Unsigned, Dwarf_Frame_Op **, Dwarf_Signed *, 546 Dwarf_Error *); 547 int _dwarf_frame_get_internal_table(Dwarf_Fde, Dwarf_Addr, 548 Dwarf_Regtable3 **, Dwarf_Addr *, Dwarf_Error *); 549 int _dwarf_frame_interal_table_init(Dwarf_Debug, Dwarf_Error *); 550 void _dwarf_frame_params_init(Dwarf_Debug); 551 void _dwarf_frame_pro_cleanup(Dwarf_P_Debug); 552 int _dwarf_frame_regtable_copy(Dwarf_Debug, Dwarf_Regtable3 **, 553 Dwarf_Regtable3 *, Dwarf_Error *); 554 int _dwarf_frame_section_load(Dwarf_Debug, Dwarf_Error *); 555 int _dwarf_frame_section_load_eh(Dwarf_Debug, Dwarf_Error *); 556 int _dwarf_generate_sections(Dwarf_P_Debug, Dwarf_Error *); 557 Dwarf_Unsigned _dwarf_get_reloc_type(Dwarf_P_Debug, int); 558 int _dwarf_get_reloc_size(Dwarf_Debug, Dwarf_Unsigned); 559 void _dwarf_info_cleanup(Dwarf_Debug); 560 int _dwarf_info_first_cu(Dwarf_Debug, Dwarf_Error *); 561 int _dwarf_info_first_tu(Dwarf_Debug, Dwarf_Error *); 562 int _dwarf_info_gen(Dwarf_P_Debug, Dwarf_Error *); 563 int _dwarf_info_load(Dwarf_Debug, Dwarf_Bool, Dwarf_Bool, 564 Dwarf_Error *); 565 int _dwarf_info_next_cu(Dwarf_Debug, Dwarf_Error *); 566 int _dwarf_info_next_tu(Dwarf_Debug, Dwarf_Error *); 567 void _dwarf_info_pro_cleanup(Dwarf_P_Debug); 568 int _dwarf_init(Dwarf_Debug, Dwarf_Unsigned, Dwarf_Handler, 569 Dwarf_Ptr, Dwarf_Error *); 570 int _dwarf_lineno_gen(Dwarf_P_Debug, Dwarf_Error *); 571 int _dwarf_lineno_init(Dwarf_Die, uint64_t, Dwarf_Error *); 572 void _dwarf_lineno_cleanup(Dwarf_LineInfo); 573 void _dwarf_lineno_pro_cleanup(Dwarf_P_Debug); 574 int _dwarf_loc_fill_locdesc(Dwarf_Debug, Dwarf_Locdesc *, 575 uint8_t *, uint64_t, uint8_t, uint8_t, uint8_t, 576 Dwarf_Error *); 577 int _dwarf_loc_fill_locexpr(Dwarf_Debug, Dwarf_Locdesc **, 578 uint8_t *, uint64_t, uint8_t, uint8_t, uint8_t, 579 Dwarf_Error *); 580 int _dwarf_loc_add(Dwarf_Die, Dwarf_Attribute, Dwarf_Error *); 581 int _dwarf_loc_expr_add_atom(Dwarf_Debug, uint8_t *, uint8_t *, 582 Dwarf_Small, Dwarf_Unsigned, Dwarf_Unsigned, int *, 583 Dwarf_Error *); 584 int _dwarf_loclist_find(Dwarf_Debug, Dwarf_CU, uint64_t, 585 Dwarf_Locdesc ***, Dwarf_Signed *, Dwarf_Unsigned *, 586 Dwarf_Error *); 587 void _dwarf_macinfo_cleanup(Dwarf_Debug); 588 int _dwarf_macinfo_gen(Dwarf_P_Debug, Dwarf_Error *); 589 int _dwarf_macinfo_init(Dwarf_Debug, Dwarf_Error *); 590 void _dwarf_macinfo_pro_cleanup(Dwarf_P_Debug); 591 int _dwarf_nametbl_init(Dwarf_Debug, Dwarf_NameSec *, 592 Dwarf_Section *, Dwarf_Error *); 593 void _dwarf_nametbl_cleanup(Dwarf_NameSec *); 594 int _dwarf_nametbl_gen(Dwarf_P_Debug, const char *, Dwarf_NameTbl, 595 Dwarf_Error *); 596 void _dwarf_nametbl_pro_cleanup(Dwarf_NameTbl *); 597 int _dwarf_pro_callback(Dwarf_P_Debug, char *, int, Dwarf_Unsigned, 598 Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Unsigned, 599 Dwarf_Unsigned *, int *); 600 Dwarf_P_Section _dwarf_pro_find_section(Dwarf_P_Debug, const char *); 601 int _dwarf_ranges_add(Dwarf_Debug, Dwarf_CU, uint64_t, 602 Dwarf_Rangelist *, Dwarf_Error *); 603 void _dwarf_ranges_cleanup(Dwarf_Debug); 604 int _dwarf_ranges_find(Dwarf_Debug, uint64_t, Dwarf_Rangelist *); 605 uint64_t _dwarf_read_lsb(uint8_t *, uint64_t *, int); 606 uint64_t _dwarf_read_msb(uint8_t *, uint64_t *, int); 607 int64_t _dwarf_read_sleb128(uint8_t *, uint64_t *); 608 uint64_t _dwarf_read_uleb128(uint8_t *, uint64_t *); 609 char *_dwarf_read_string(void *, Dwarf_Unsigned, uint64_t *); 610 uint8_t *_dwarf_read_block(void *, uint64_t *, uint64_t); 611 int _dwarf_reloc_section_finalize(Dwarf_P_Debug, Dwarf_Rel_Section, 612 Dwarf_Error *); 613 int _dwarf_reloc_entry_add(Dwarf_P_Debug, Dwarf_Rel_Section, 614 Dwarf_P_Section, unsigned char, unsigned char, 615 Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Unsigned, 616 const char *, Dwarf_Error *); 617 int _dwarf_reloc_entry_add_pair(Dwarf_P_Debug, Dwarf_Rel_Section, 618 Dwarf_P_Section, unsigned char, Dwarf_Unsigned, 619 Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Unsigned, 620 Dwarf_Unsigned, Dwarf_Error *); 621 void _dwarf_reloc_cleanup(Dwarf_P_Debug); 622 int _dwarf_reloc_gen(Dwarf_P_Debug, Dwarf_Error *); 623 int _dwarf_reloc_section_gen(Dwarf_P_Debug, Dwarf_Rel_Section, 624 Dwarf_Error *); 625 int _dwarf_reloc_section_init(Dwarf_P_Debug, Dwarf_Rel_Section *, 626 Dwarf_P_Section, Dwarf_Error *); 627 void _dwarf_reloc_section_free(Dwarf_P_Debug, Dwarf_Rel_Section *); 628 void _dwarf_section_cleanup(Dwarf_P_Debug); 629 int _dwarf_section_callback(Dwarf_P_Debug, Dwarf_P_Section, 630 Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Unsigned, 631 Dwarf_Unsigned, Dwarf_Error *); 632 void _dwarf_section_free(Dwarf_P_Debug, Dwarf_P_Section *); 633 int _dwarf_section_init(Dwarf_P_Debug, Dwarf_P_Section *, 634 const char *, int, Dwarf_Error *); 635 void _dwarf_set_error(Dwarf_Debug, Dwarf_Error *, int, int, 636 const char *, int); 637 int _dwarf_strtab_add(Dwarf_Debug, char *, uint64_t *, 638 Dwarf_Error *); 639 void _dwarf_strtab_cleanup(Dwarf_Debug); 640 int _dwarf_strtab_gen(Dwarf_P_Debug, Dwarf_Error *); 641 char *_dwarf_strtab_get_table(Dwarf_Debug); 642 int _dwarf_strtab_init(Dwarf_Debug, Dwarf_Error *); 643 void _dwarf_type_unit_cleanup(Dwarf_Debug); 644 void _dwarf_write_block(void *, uint64_t *, uint8_t *, uint64_t); 645 int _dwarf_write_block_alloc(uint8_t **, uint64_t *, uint64_t *, 646 uint8_t *, uint64_t, Dwarf_Error *); 647 void _dwarf_write_lsb(uint8_t *, uint64_t *, uint64_t, int); 648 int _dwarf_write_lsb_alloc(uint8_t **, uint64_t *, uint64_t *, 649 uint64_t, int, Dwarf_Error *); 650 void _dwarf_write_msb(uint8_t *, uint64_t *, uint64_t, int); 651 int _dwarf_write_msb_alloc(uint8_t **, uint64_t *, uint64_t *, 652 uint64_t, int, Dwarf_Error *); 653 void _dwarf_write_padding(void *, uint64_t *, uint8_t, uint64_t); 654 int _dwarf_write_padding_alloc(uint8_t **, uint64_t *, uint64_t *, 655 uint8_t, uint64_t, Dwarf_Error *); 656 void _dwarf_write_string(void *, uint64_t *, char *); 657 int _dwarf_write_string_alloc(uint8_t **, uint64_t *, uint64_t *, 658 char *, Dwarf_Error *); 659 int _dwarf_write_sleb128(uint8_t *, uint8_t *, int64_t); 660 int _dwarf_write_sleb128_alloc(uint8_t **, uint64_t *, uint64_t *, 661 int64_t, Dwarf_Error *); 662 int _dwarf_write_uleb128(uint8_t *, uint8_t *, uint64_t); 663 int _dwarf_write_uleb128_alloc(uint8_t **, uint64_t *, uint64_t *, 664 uint64_t, Dwarf_Error *); 665 666 #endif /* !__LIBDWARF_H_ */ 667