contrib/elftoolchain/libdwarf/_libdwarf.h

   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 3161 2015-02-15 21:43:36Z emaste $
  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         uint64_t        ad_attrib;              /* DW_AT_XXX */
  96         uint64_t        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         uint64_t                at_attrib;      /* DW_AT_XXX */
 106         uint64_t                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_defstmt;     /* Default value of is_stmt. */
 194         int8_t          li_lbase;       /* Line base for special opcode. */
 195         Dwarf_Small     li_lrange;      /* Line range for special opcode. */
 196         Dwarf_Small     li_opbase;      /* Fisrt std opcode number. */
 197         Dwarf_Small     *li_oplen;      /* Array of std opcode len. */
 198         char            **li_incdirs;   /* Array of include dirs. */
 199         Dwarf_Unsigned  li_inclen;      /* Length of inc dir array. */
 200         char            **li_lfnarray;  /* Array of file names. */
 201         Dwarf_Unsigned  li_lflen;       /* Length of filename array. */
 202         STAILQ_HEAD(, _Dwarf_LineFile) li_lflist; /* List of files. */
 203         Dwarf_Line      *li_lnarray;    /* Array of lines. */
 204         Dwarf_Unsigned  li_lnlen;       /* Length of the line array. */
 205         STAILQ_HEAD(, _Dwarf_Line) li_lnlist; /* List of lines. */
 206 };
 207
 208 struct _Dwarf_NamePair {
 209         Dwarf_NameTbl   np_nt;          /* Ptr to containing name table. */
 210         Dwarf_Die       np_die;         /* Ptr to Ref. Die. */
 211         Dwarf_Unsigned  np_offset;      /* Offset in CU. */
 212         char            *np_name;       /* Object/Type name. */
 213         STAILQ_ENTRY(_Dwarf_NamePair) np_next; /* Next pair in the list. */
 214 };
 215
 216 struct _Dwarf_NameTbl {
 217         Dwarf_Unsigned  nt_length;      /* Name lookup table length. */
 218         Dwarf_Half      nt_version;     /* Name lookup table version. */
 219         Dwarf_CU        nt_cu;          /* Ptr to Ref. CU. */
 220         Dwarf_Off       nt_cu_offset;   /* Ref. CU offset in .debug_info */
 221         Dwarf_Unsigned  nt_cu_length;   /* Ref. CU length. */
 222         STAILQ_HEAD(, _Dwarf_NamePair) nt_nplist; /* List of offset+name pairs. */
 223         STAILQ_ENTRY(_Dwarf_NameTbl) nt_next; /* Next name table in the list. */
 224 };
 225
 226 struct _Dwarf_NameSec {
 227         STAILQ_HEAD(, _Dwarf_NameTbl) ns_ntlist; /* List of name tables. */
 228         Dwarf_NamePair  *ns_array;      /* Array of pairs of all tables. */
 229         Dwarf_Unsigned  ns_len;         /* Length of the pair array. */
 230 };
 231
 232 struct _Dwarf_Fde {
 233         Dwarf_Debug     fde_dbg;        /* Ptr to containing dbg. */
 234         Dwarf_Cie       fde_cie;        /* Ptr to associated CIE. */
 235         Dwarf_FrameSec  fde_fs;         /* Ptr to containing .debug_frame. */
 236         Dwarf_Ptr       fde_addr;       /* Ptr to start of the FDE. */
 237         Dwarf_Unsigned  fde_offset;     /* Offset of the FDE. */
 238         Dwarf_Unsigned  fde_length;     /* Length of the FDE. */
 239         Dwarf_Unsigned  fde_cieoff;     /* Offset of associated CIE. */
 240         Dwarf_Unsigned  fde_initloc;    /* Initial location. */
 241         Dwarf_Unsigned  fde_adrange;    /* Address range. */
 242         Dwarf_Unsigned  fde_auglen;     /* Augmentation length. */
 243         uint8_t         *fde_augdata;   /* Augmentation data. */
 244         uint8_t         *fde_inst;      /* Instructions. */
 245         Dwarf_Unsigned  fde_instlen;    /* Length of instructions. */
 246         Dwarf_Unsigned  fde_instcap;    /* Capacity of inst buffer. */
 247         Dwarf_Unsigned  fde_symndx;     /* Symbol index for relocation. */
 248         Dwarf_Unsigned  fde_esymndx;    /* End symbol index for relocation. */
 249         Dwarf_Addr      fde_eoff;       /* Offset from the end symbol. */
 250         STAILQ_ENTRY(_Dwarf_Fde) fde_next; /* Next FDE in list. */
 251 };
 252
 253 struct _Dwarf_Cie {
 254         Dwarf_Debug     cie_dbg;        /* Ptr to containing dbg. */
 255         Dwarf_Unsigned  cie_index;      /* Index of the CIE. */
 256         Dwarf_Unsigned  cie_offset;     /* Offset of the CIE. */
 257         Dwarf_Unsigned  cie_length;     /* Length of the CIE. */
 258         Dwarf_Half      cie_version;    /* CIE version. */
 259         uint8_t         *cie_augment;   /* CIE augmentation (UTF-8). */
 260         Dwarf_Unsigned  cie_ehdata;     /* Optional EH Data. */
 261         uint8_t         cie_addrsize;   /* Address size. (DWARF4) */
 262         uint8_t         cie_segmentsize; /* Segment size. (DWARF4) */
 263         Dwarf_Unsigned  cie_caf;        /* Code alignment factor. */
 264         Dwarf_Signed    cie_daf;        /* Data alignment factor. */
 265         Dwarf_Unsigned  cie_ra;         /* Return address register. */
 266         Dwarf_Unsigned  cie_auglen;     /* Augmentation length. */
 267         uint8_t         *cie_augdata;   /* Augmentation data; */
 268         uint8_t         cie_fde_encode; /* FDE PC start/range encode. */
 269         Dwarf_Ptr       cie_initinst;   /* Initial instructions. */
 270         Dwarf_Unsigned  cie_instlen;    /* Length of init instructions. */
 271         STAILQ_ENTRY(_Dwarf_Cie) cie_next;  /* Next CIE in list. */
 272 };
 273
 274 struct _Dwarf_FrameSec {
 275         STAILQ_HEAD(, _Dwarf_Cie) fs_cielist; /* List of CIE. */
 276         STAILQ_HEAD(, _Dwarf_Fde) fs_fdelist; /* List of FDE. */
 277         Dwarf_Cie       *fs_ciearray;   /* Array of CIE. */
 278         Dwarf_Unsigned  fs_cielen;      /* Length of CIE array. */
 279         Dwarf_Fde       *fs_fdearray;   /* Array of FDE.*/
 280         Dwarf_Unsigned  fs_fdelen;      /* Length of FDE array. */
 281 };
 282
 283 struct _Dwarf_Arange {
 284         Dwarf_ArangeSet ar_as;          /* Ptr to the set it belongs to. */
 285         Dwarf_Unsigned  ar_address;     /* Start PC. */
 286         Dwarf_Unsigned  ar_range;       /* PC range. */
 287         Dwarf_Unsigned  ar_symndx;      /* First symbol index for reloc. */
 288         Dwarf_Unsigned  ar_esymndx;     /* Second symbol index for reloc. */
 289         Dwarf_Addr      ar_eoff;        /* Offset from second symbol. */
 290         STAILQ_ENTRY(_Dwarf_Arange) ar_next; /* Next arange in list. */
 291 };
 292
 293 struct _Dwarf_ArangeSet {
 294         Dwarf_Unsigned  as_length;      /* Length of the arange set. */
 295         Dwarf_Half      as_version;     /* Version of the arange set. */
 296         Dwarf_Off       as_cu_offset;   /* Offset of associated CU. */
 297         Dwarf_CU        as_cu;          /* Ptr to associated CU. */
 298         Dwarf_Small     as_addrsz;      /* Target address size. */
 299         Dwarf_Small     as_segsz;       /* Target segment size. */
 300         STAILQ_HEAD (, _Dwarf_Arange) as_arlist; /* List of ae entries. */
 301         STAILQ_ENTRY(_Dwarf_ArangeSet) as_next; /* Next set in list. */
 302 };
 303
 304 struct _Dwarf_MacroSet {
 305         Dwarf_Macro_Details *ms_mdlist; /* Array of macinfo entries. */
 306         Dwarf_Unsigned  ms_cnt;         /* Length of the array. */
 307         STAILQ_ENTRY(_Dwarf_MacroSet) ms_next; /* Next set in list. */
 308 };
 309
 310 struct _Dwarf_Rangelist {
 311         Dwarf_CU        rl_cu;          /* Ptr to associated CU. */
 312         Dwarf_Unsigned  rl_offset;      /* Offset of the rangelist. */
 313         Dwarf_Ranges    *rl_rgarray;    /* Array of ranges. */
 314         Dwarf_Unsigned  rl_rglen;       /* Length of the ranges array. */
 315         STAILQ_ENTRY(_Dwarf_Rangelist) rl_next; /* Next rangelist in list. */
 316 };
 317
 318 struct _Dwarf_CU {
 319         Dwarf_Debug     cu_dbg;         /* Ptr to containing dbg. */
 320         Dwarf_Off       cu_offset;      /* Offset to the this CU. */
 321         uint32_t        cu_length;      /* Length of CU data. */
 322         uint16_t        cu_length_size; /* Size in bytes of the length field. */
 323         uint16_t        cu_version;     /* DWARF version. */
 324         uint64_t        cu_abbrev_offset; /* Offset into .debug_abbrev. */
 325         uint64_t        cu_abbrev_offset_cur; /* Current abbrev offset. */
 326         int             cu_abbrev_loaded; /* Abbrev table parsed. */
 327         uint64_t        cu_abbrev_cnt;  /* Abbrev entry count. */
 328         uint64_t        cu_lineno_offset; /* Offset into .debug_lineno. */
 329         uint8_t         cu_pointer_size;/* Number of bytes in pointer. */
 330         uint8_t         cu_dwarf_size;  /* CU section dwarf size. */
 331         Dwarf_Sig8      cu_type_sig;    /* Type unit's signature. */
 332         uint64_t        cu_type_offset; /* Type unit's type offset. */
 333         Dwarf_Off       cu_next_offset; /* Offset to the next CU. */
 334         uint64_t        cu_1st_offset;  /* First DIE offset. */
 335         int             cu_pass2;       /* Two pass DIE traverse. */
 336         Dwarf_LineInfo  cu_lineinfo;    /* Ptr to Dwarf_LineInfo. */
 337         Dwarf_Abbrev    cu_abbrev_hash; /* Abbrev hash table. */
 338         Dwarf_Bool      cu_is_info;     /* Compilation/type unit flag. */
 339         STAILQ_ENTRY(_Dwarf_CU) cu_next; /* Next compilation unit. */
 340 };
 341
 342 typedef struct _Dwarf_Section {
 343         const char      *ds_name;       /* Section name. */
 344         Dwarf_Small     *ds_data;       /* Section data. */
 345         Dwarf_Unsigned  ds_addr;        /* Section virtual addr. */
 346         Dwarf_Unsigned  ds_size;        /* Section size. */
 347 } Dwarf_Section;
 348
 349 typedef struct _Dwarf_P_Section {
 350         char            *ds_name;       /* Section name. */
 351         Dwarf_Small     *ds_data;       /* Section data. */
 352         Dwarf_Unsigned  ds_size;        /* Section size. */
 353         Dwarf_Unsigned  ds_cap;         /* Section capacity. */
 354         Dwarf_Unsigned  ds_ndx;         /* ELF section index. */
 355         Dwarf_Unsigned  ds_symndx;      /* Section symbol index. (for reloc) */
 356         STAILQ_ENTRY(_Dwarf_P_Section) ds_next; /* Next section in the list. */
 357 } *Dwarf_P_Section;
 358
 359 typedef struct _Dwarf_Rel_Entry {
 360         unsigned char   dre_type;       /* Reloc type. */
 361         unsigned char   dre_length;     /* Reloc storage unit length. */
 362         Dwarf_Unsigned  dre_offset;     /* Reloc storage unit offset. */
 363         Dwarf_Unsigned  dre_addend;     /* Reloc addend. */
 364         Dwarf_Unsigned  dre_symndx;     /* Reloc symbol index. */
 365         const char      *dre_secname;   /* Refer to some debug section. */
 366         STAILQ_ENTRY(_Dwarf_Rel_Entry) dre_next; /* Next reloc entry. */
 367 } *Dwarf_Rel_Entry;
 368
 369 typedef struct _Dwarf_Rel_Section {
 370         struct _Dwarf_P_Section *drs_ds; /* Ptr to actual reloc ELF section. */
 371         struct _Dwarf_P_Section *drs_ref; /* Which debug section it refers. */
 372         struct Dwarf_Relocation_Data_s *drs_drd; /* Reloc data array. */
 373         STAILQ_HEAD(, _Dwarf_Rel_Entry) drs_dre; /* Reloc entry list. */
 374         Dwarf_Unsigned  drs_drecnt;     /* Count of entries. */
 375         Dwarf_Unsigned  drs_size;       /* Size of ELF section in bytes. */
 376         int             drs_addend;     /* Elf_Rel or Elf_Rela */
 377         STAILQ_ENTRY(_Dwarf_Rel_Section) drs_next; /* Next reloc section. */
 378 } *Dwarf_Rel_Section;
 379
 380 typedef struct {
 381         Elf_Data *ed_data;
 382         void *ed_alloc;
 383 } Dwarf_Elf_Data;
 384
 385 typedef struct {
 386         Elf             *eo_elf;
 387         GElf_Ehdr       eo_ehdr;
 388         GElf_Shdr       *eo_shdr;
 389         Dwarf_Elf_Data  *eo_data;
 390         Dwarf_Unsigned  eo_seccnt;
 391         size_t          eo_strndx;
 392         Dwarf_Obj_Access_Methods eo_methods;
 393 } Dwarf_Elf_Object;
 394
 395 struct _Dwarf_Debug {
 396         Dwarf_Obj_Access_Interface *dbg_iface;
 397         Dwarf_Section   *dbg_section;   /* Dwarf section list. */
 398         Dwarf_Section   *dbg_info_sec;  /* Pointer to info section. */
 399         Dwarf_Off       dbg_info_off;   /* Current info section offset. */
 400         Dwarf_Section   *dbg_types_sec; /* Pointer to type section. */
 401         Dwarf_Off       dbg_types_off;  /* Current types section offset. */
 402         Dwarf_Unsigned  dbg_seccnt;     /* Total number of dwarf sections. */
 403         int             dbg_mode;       /* Access mode. */
 404         int             dbg_pointer_size; /* Object address size. */
 405         int             dbg_offset_size;  /* DWARF offset size. */
 406         int             dbg_info_loaded; /* Flag indicating all CU loaded. */
 407         int             dbg_types_loaded; /* Flag indicating all TU loaded. */
 408         Dwarf_Half      dbg_machine;    /* ELF machine architecture. */
 409         Dwarf_Handler   dbg_errhand;    /* Error handler. */
 410         Dwarf_Ptr       dbg_errarg;     /* Argument to the error handler. */
 411         STAILQ_HEAD(, _Dwarf_CU) dbg_cu;/* List of compilation units. */
 412         STAILQ_HEAD(, _Dwarf_CU) dbg_tu;/* List of type units. */
 413         Dwarf_CU        dbg_cu_current; /* Ptr to the current CU. */
 414         Dwarf_CU        dbg_tu_current; /* Ptr to the current TU. */
 415         Dwarf_NameSec   dbg_globals;    /* Ptr to pubnames lookup section. */
 416         Dwarf_NameSec   dbg_pubtypes;   /* Ptr to pubtypes lookup section. */
 417         Dwarf_NameSec   dbg_weaks;      /* Ptr to weaknames lookup section. */
 418         Dwarf_NameSec   dbg_funcs;      /* Ptr to static funcs lookup sect. */
 419         Dwarf_NameSec   dbg_vars;       /* Ptr to static vars lookup sect. */
 420         Dwarf_NameSec   dbg_types;      /* Ptr to types lookup section. */
 421         Dwarf_FrameSec  dbg_frame;      /* Ptr to .debug_frame section. */
 422         Dwarf_FrameSec  dbg_eh_frame;   /* Ptr to .eh_frame section. */
 423         STAILQ_HEAD(, _Dwarf_ArangeSet) dbg_aslist; /* List of arange set. */
 424         Dwarf_Arange    *dbg_arange_array; /* Array of arange. */
 425         Dwarf_Unsigned  dbg_arange_cnt; /* Length of the arange array. */
 426         char            *dbg_strtab;    /* Dwarf string table. */
 427         Dwarf_Unsigned  dbg_strtab_cap; /* Dwarf string table capacity. */
 428         Dwarf_Unsigned  dbg_strtab_size; /* Dwarf string table size. */
 429         STAILQ_HEAD(, _Dwarf_MacroSet) dbg_mslist; /* List of macro set. */
 430         STAILQ_HEAD(, _Dwarf_Rangelist) dbg_rllist; /* List of rangelist. */
 431         uint64_t        (*read)(uint8_t *, uint64_t *, int);
 432         void            (*write)(uint8_t *, uint64_t *, uint64_t, int);
 433         int             (*write_alloc)(uint8_t **, uint64_t *, uint64_t *,
 434                             uint64_t, int, Dwarf_Error *);
 435         uint64_t        (*decode)(uint8_t **, int);
 436
 437         Dwarf_Half      dbg_frame_rule_table_size;
 438         Dwarf_Half      dbg_frame_rule_initial_value;
 439         Dwarf_Half      dbg_frame_cfa_value;
 440         Dwarf_Half      dbg_frame_same_value;
 441         Dwarf_Half      dbg_frame_undefined_value;
 442
 443         Dwarf_Regtable3 *dbg_internal_reg_table;
 444
 445         /*
 446          * Fields used by libdwarf producer.
 447          */
 448
 449         Dwarf_Unsigned  dbgp_flags;
 450         Dwarf_Unsigned  dbgp_isa;
 451         Dwarf_Callback_Func dbgp_func;
 452         Dwarf_Callback_Func_b dbgp_func_b;
 453         Dwarf_Die       dbgp_root_die;
 454         STAILQ_HEAD(, _Dwarf_Die) dbgp_dielist;
 455         STAILQ_HEAD(, _Dwarf_P_Expr) dbgp_pelist;
 456         Dwarf_LineInfo  dbgp_lineinfo;
 457         Dwarf_ArangeSet dbgp_as;
 458         Dwarf_Macro_Details *dbgp_mdlist;
 459         Dwarf_Unsigned  dbgp_mdcnt;
 460         STAILQ_HEAD(, _Dwarf_Cie) dbgp_cielist;
 461         STAILQ_HEAD(, _Dwarf_Fde) dbgp_fdelist;
 462         Dwarf_Unsigned  dbgp_cielen;
 463         Dwarf_Unsigned  dbgp_fdelen;
 464         Dwarf_NameTbl   dbgp_pubs;
 465         Dwarf_NameTbl   dbgp_weaks;
 466         Dwarf_NameTbl   dbgp_funcs;
 467         Dwarf_NameTbl   dbgp_types;
 468         Dwarf_NameTbl   dbgp_vars;
 469         STAILQ_HEAD(, _Dwarf_P_Section) dbgp_seclist;
 470         Dwarf_Unsigned  dbgp_seccnt;
 471         Dwarf_P_Section dbgp_secpos;
 472         Dwarf_P_Section dbgp_info;
 473         STAILQ_HEAD(, _Dwarf_Rel_Section) dbgp_drslist;
 474         Dwarf_Unsigned  dbgp_drscnt;
 475         Dwarf_Rel_Section dbgp_drspos;
 476 };
 477
 478 /*
 479  * Internal function prototypes.
 480  */
 481
 482 int             _dwarf_abbrev_add(Dwarf_CU, uint64_t, uint64_t, uint8_t,
 483                     uint64_t, Dwarf_Abbrev *, Dwarf_Error *);
 484 void            _dwarf_abbrev_cleanup(Dwarf_CU);
 485 int             _dwarf_abbrev_find(Dwarf_CU, uint64_t, Dwarf_Abbrev *,
 486                     Dwarf_Error *);
 487 int             _dwarf_abbrev_gen(Dwarf_P_Debug, Dwarf_Error *);
 488 int             _dwarf_abbrev_parse(Dwarf_Debug, Dwarf_CU, Dwarf_Unsigned *,
 489                     Dwarf_Abbrev *, Dwarf_Error *);
 490 int             _dwarf_add_AT_dataref(Dwarf_P_Debug, Dwarf_P_Die, Dwarf_Half,
 491                     Dwarf_Unsigned, Dwarf_Unsigned, const char *,
 492                     Dwarf_P_Attribute *, Dwarf_Error *);
 493 int             _dwarf_add_string_attr(Dwarf_P_Die, Dwarf_P_Attribute *,
 494                     Dwarf_Half, char *, Dwarf_Error *);
 495 int             _dwarf_alloc(Dwarf_Debug *, int, Dwarf_Error *);
 496 void            _dwarf_arange_cleanup(Dwarf_Debug);
 497 int             _dwarf_arange_gen(Dwarf_P_Debug, Dwarf_Error *);
 498 int             _dwarf_arange_init(Dwarf_Debug, Dwarf_Error *);
 499 void            _dwarf_arange_pro_cleanup(Dwarf_P_Debug);
 500 int             _dwarf_attr_alloc(Dwarf_Die, Dwarf_Attribute *, Dwarf_Error *);
 501 Dwarf_Attribute _dwarf_attr_find(Dwarf_Die, Dwarf_Half);
 502 int             _dwarf_attr_gen(Dwarf_P_Debug, Dwarf_P_Section, Dwarf_Rel_Section,
 503                     Dwarf_CU, Dwarf_Die, int, Dwarf_Error *);
 504 int             _dwarf_attr_init(Dwarf_Debug, Dwarf_Section *, uint64_t *, int,
 505                     Dwarf_CU, Dwarf_Die, Dwarf_AttrDef, uint64_t, int,
 506                     Dwarf_Error *);
 507 int             _dwarf_attrdef_add(Dwarf_Debug, Dwarf_Abbrev, uint64_t,
 508                     uint64_t, uint64_t, Dwarf_AttrDef *, Dwarf_Error *);
 509 uint64_t        _dwarf_decode_lsb(uint8_t **, int);
 510 uint64_t        _dwarf_decode_msb(uint8_t **, int);
 511 int64_t         _dwarf_decode_sleb128(uint8_t **);
 512 uint64_t        _dwarf_decode_uleb128(uint8_t **);
 513 void            _dwarf_deinit(Dwarf_Debug);
 514 int             _dwarf_die_alloc(Dwarf_Debug, Dwarf_Die *, Dwarf_Error *);
 515 int             _dwarf_die_count_links(Dwarf_P_Die, Dwarf_P_Die,
 516                     Dwarf_P_Die, Dwarf_P_Die);
 517 Dwarf_Die       _dwarf_die_find(Dwarf_Die, Dwarf_Unsigned);
 518 int             _dwarf_die_gen(Dwarf_P_Debug, Dwarf_CU, Dwarf_Rel_Section,
 519                     Dwarf_Error *);
 520 void            _dwarf_die_link(Dwarf_P_Die, Dwarf_P_Die, Dwarf_P_Die,
 521                     Dwarf_P_Die, Dwarf_P_Die);
 522 int             _dwarf_die_parse(Dwarf_Debug, Dwarf_Section *, Dwarf_CU, int,
 523                     uint64_t, uint64_t, Dwarf_Die *, int, Dwarf_Error *);
 524 void            _dwarf_die_pro_cleanup(Dwarf_P_Debug);
 525 void            _dwarf_elf_deinit(Dwarf_Debug);
 526 int             _dwarf_elf_init(Dwarf_Debug, Elf *, Dwarf_Error *);
 527 int             _dwarf_elf_load_section(void *, Dwarf_Half, Dwarf_Small **,
 528                     int *);
 529 Dwarf_Endianness _dwarf_elf_get_byte_order(void *);
 530 Dwarf_Small     _dwarf_elf_get_length_size(void *);
 531 Dwarf_Small     _dwarf_elf_get_pointer_size(void *);
 532 Dwarf_Unsigned  _dwarf_elf_get_section_count(void *);
 533 int             _dwarf_elf_get_section_info(void *, Dwarf_Half,
 534                     Dwarf_Obj_Access_Section *, int *);
 535 void            _dwarf_expr_cleanup(Dwarf_P_Debug);
 536 int             _dwarf_expr_into_block(Dwarf_P_Expr, Dwarf_Error *);
 537 Dwarf_Section   *_dwarf_find_next_types_section(Dwarf_Debug, Dwarf_Section *);
 538 Dwarf_Section   *_dwarf_find_section(Dwarf_Debug, const char *);
 539 void            _dwarf_frame_cleanup(Dwarf_Debug);
 540 int             _dwarf_frame_fde_add_inst(Dwarf_P_Fde, Dwarf_Small,
 541                     Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Error *);
 542 int             _dwarf_frame_gen(Dwarf_P_Debug, Dwarf_Error *);
 543 int             _dwarf_frame_get_fop(Dwarf_Debug, uint8_t, uint8_t *,
 544                     Dwarf_Unsigned, Dwarf_Frame_Op **, Dwarf_Signed *,
 545                     Dwarf_Error *);
 546 int             _dwarf_frame_get_internal_table(Dwarf_Fde, Dwarf_Addr,
 547                     Dwarf_Regtable3 **, Dwarf_Addr *, Dwarf_Error *);
 548 int             _dwarf_frame_interal_table_init(Dwarf_Debug, Dwarf_Error *);
 549 void            _dwarf_frame_params_init(Dwarf_Debug);
 550 void            _dwarf_frame_pro_cleanup(Dwarf_P_Debug);
 551 int             _dwarf_frame_regtable_copy(Dwarf_Debug, Dwarf_Regtable3 **,
 552                     Dwarf_Regtable3 *, Dwarf_Error *);
 553 int             _dwarf_frame_section_load(Dwarf_Debug, Dwarf_Error *);
 554 int             _dwarf_frame_section_load_eh(Dwarf_Debug, Dwarf_Error *);
 555 int             _dwarf_generate_sections(Dwarf_P_Debug, Dwarf_Error *);
 556 Dwarf_Unsigned  _dwarf_get_reloc_type(Dwarf_P_Debug, int);
 557 int             _dwarf_get_reloc_size(Dwarf_Debug, Dwarf_Unsigned);
 558 void            _dwarf_info_cleanup(Dwarf_Debug);
 559 int             _dwarf_info_first_cu(Dwarf_Debug, Dwarf_Error *);
 560 int             _dwarf_info_first_tu(Dwarf_Debug, Dwarf_Error *);
 561 int             _dwarf_info_gen(Dwarf_P_Debug, Dwarf_Error *);
 562 int             _dwarf_info_load(Dwarf_Debug, Dwarf_Bool, Dwarf_Bool,
 563                     Dwarf_Error *);
 564 int             _dwarf_info_next_cu(Dwarf_Debug, Dwarf_Error *);
 565 int             _dwarf_info_next_tu(Dwarf_Debug, Dwarf_Error *);
 566 void            _dwarf_info_pro_cleanup(Dwarf_P_Debug);
 567 int             _dwarf_init(Dwarf_Debug, Dwarf_Unsigned, Dwarf_Handler,
 568                     Dwarf_Ptr, Dwarf_Error *);
 569 int             _dwarf_lineno_gen(Dwarf_P_Debug, Dwarf_Error *);
 570 int             _dwarf_lineno_init(Dwarf_Die, uint64_t, Dwarf_Error *);
 571 void            _dwarf_lineno_cleanup(Dwarf_LineInfo);
 572 void            _dwarf_lineno_pro_cleanup(Dwarf_P_Debug);
 573 int             _dwarf_loc_fill_locdesc(Dwarf_Debug, Dwarf_Locdesc *,
 574                     uint8_t *, uint64_t, uint8_t, uint8_t, uint8_t,
 575                     Dwarf_Error *);
 576 int             _dwarf_loc_fill_locexpr(Dwarf_Debug, Dwarf_Locdesc **,
 577                     uint8_t *, uint64_t, uint8_t, uint8_t, uint8_t,
 578                     Dwarf_Error *);
 579 int             _dwarf_loc_add(Dwarf_Die, Dwarf_Attribute, Dwarf_Error *);
 580 int             _dwarf_loc_expr_add_atom(Dwarf_Debug, uint8_t *, uint8_t *,
 581                     Dwarf_Small, Dwarf_Unsigned, Dwarf_Unsigned, int *,
 582                     Dwarf_Error *);
 583 int             _dwarf_loclist_find(Dwarf_Debug, Dwarf_CU, uint64_t,
 584                     Dwarf_Locdesc ***, Dwarf_Signed *, Dwarf_Unsigned *,
 585                     Dwarf_Error *);
 586 void            _dwarf_macinfo_cleanup(Dwarf_Debug);
 587 int             _dwarf_macinfo_gen(Dwarf_P_Debug, Dwarf_Error *);
 588 int             _dwarf_macinfo_init(Dwarf_Debug, Dwarf_Error *);
 589 void            _dwarf_macinfo_pro_cleanup(Dwarf_P_Debug);
 590 int             _dwarf_nametbl_init(Dwarf_Debug, Dwarf_NameSec *,
 591                     Dwarf_Section *, Dwarf_Error *);
 592 void            _dwarf_nametbl_cleanup(Dwarf_NameSec *);
 593 int             _dwarf_nametbl_gen(Dwarf_P_Debug, const char *, Dwarf_NameTbl,
 594                     Dwarf_Error *);
 595 void            _dwarf_nametbl_pro_cleanup(Dwarf_NameTbl *);
 596 int             _dwarf_pro_callback(Dwarf_P_Debug, char *, int, Dwarf_Unsigned,
 597                     Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Unsigned,
 598                     Dwarf_Unsigned *, int *);
 599 Dwarf_P_Section _dwarf_pro_find_section(Dwarf_P_Debug, const char *);
 600 int             _dwarf_ranges_add(Dwarf_Debug, Dwarf_CU, uint64_t,
 601                     Dwarf_Rangelist *, Dwarf_Error *);
 602 void            _dwarf_ranges_cleanup(Dwarf_Debug);
 603 int             _dwarf_ranges_find(Dwarf_Debug, uint64_t, Dwarf_Rangelist *);
 604 uint64_t        _dwarf_read_lsb(uint8_t *, uint64_t *, int);
 605 uint64_t        _dwarf_read_msb(uint8_t *, uint64_t *, int);
 606 int64_t         _dwarf_read_sleb128(uint8_t *, uint64_t *);
 607 uint64_t        _dwarf_read_uleb128(uint8_t *, uint64_t *);
 608 char            *_dwarf_read_string(void *, Dwarf_Unsigned, uint64_t *);
 609 uint8_t         *_dwarf_read_block(void *, uint64_t *, uint64_t);
 610 int             _dwarf_reloc_section_finalize(Dwarf_P_Debug, Dwarf_Rel_Section,
 611                     Dwarf_Error *);
 612 int             _dwarf_reloc_entry_add(Dwarf_P_Debug, Dwarf_Rel_Section,
 613                     Dwarf_P_Section, unsigned char, unsigned char,
 614                     Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Unsigned,
 615                     const char *, Dwarf_Error *);
 616 int             _dwarf_reloc_entry_add_pair(Dwarf_P_Debug, Dwarf_Rel_Section,
 617                     Dwarf_P_Section, unsigned char, Dwarf_Unsigned,
 618                     Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Unsigned,
 619                     Dwarf_Unsigned, Dwarf_Error *);
 620 void            _dwarf_reloc_cleanup(Dwarf_P_Debug);
 621 int             _dwarf_reloc_gen(Dwarf_P_Debug, Dwarf_Error *);
 622 int             _dwarf_reloc_section_gen(Dwarf_P_Debug, Dwarf_Rel_Section,
 623                     Dwarf_Error *);
 624 int             _dwarf_reloc_section_init(Dwarf_P_Debug, Dwarf_Rel_Section *,
 625                     Dwarf_P_Section, Dwarf_Error *);
 626 void            _dwarf_reloc_section_free(Dwarf_P_Debug, Dwarf_Rel_Section *);
 627 void            _dwarf_section_cleanup(Dwarf_P_Debug);
 628 int             _dwarf_section_callback(Dwarf_P_Debug, Dwarf_P_Section,
 629                     Dwarf_Unsigned, Dwarf_Unsigned, Dwarf_Unsigned,
 630                     Dwarf_Unsigned, Dwarf_Error *);
 631 void            _dwarf_section_free(Dwarf_P_Debug, Dwarf_P_Section *);
 632 int             _dwarf_section_init(Dwarf_P_Debug, Dwarf_P_Section *,
 633                     const char *, int, Dwarf_Error *);
 634 void            _dwarf_set_error(Dwarf_Debug, Dwarf_Error *, int, int,
 635                     const char *, int);
 636 int             _dwarf_strtab_add(Dwarf_Debug, char *, uint64_t *,
 637                     Dwarf_Error *);
 638 void            _dwarf_strtab_cleanup(Dwarf_Debug);
 639 int             _dwarf_strtab_gen(Dwarf_P_Debug, Dwarf_Error *);
 640 char            *_dwarf_strtab_get_table(Dwarf_Debug);
 641 int             _dwarf_strtab_init(Dwarf_Debug, Dwarf_Error *);
 642 void            _dwarf_type_unit_cleanup(Dwarf_Debug);
 643 void            _dwarf_write_block(void *, uint64_t *, uint8_t *, uint64_t);
 644 int             _dwarf_write_block_alloc(uint8_t **, uint64_t *, uint64_t *,
 645                     uint8_t *, uint64_t, Dwarf_Error *);
 646 void            _dwarf_write_lsb(uint8_t *, uint64_t *, uint64_t, int);
 647 int             _dwarf_write_lsb_alloc(uint8_t **, uint64_t *, uint64_t *,
 648                     uint64_t, int, Dwarf_Error *);
 649 void            _dwarf_write_msb(uint8_t *, uint64_t *, uint64_t, int);
 650 int             _dwarf_write_msb_alloc(uint8_t **, uint64_t *, uint64_t *,
 651                     uint64_t, int, Dwarf_Error *);
 652 void            _dwarf_write_padding(void *, uint64_t *, uint8_t, uint64_t);
 653 int             _dwarf_write_padding_alloc(uint8_t **, uint64_t *, uint64_t *,
 654                     uint8_t, uint64_t, Dwarf_Error *);
 655 void            _dwarf_write_string(void *, uint64_t *, char *);
 656 int             _dwarf_write_string_alloc(uint8_t **, uint64_t *, uint64_t *,
 657                     char *, Dwarf_Error *);
 658 int             _dwarf_write_sleb128(uint8_t *, uint8_t *, int64_t);
 659 int             _dwarf_write_sleb128_alloc(uint8_t **, uint64_t *, uint64_t *,
 660                     int64_t, Dwarf_Error *);
 661 int             _dwarf_write_uleb128(uint8_t *, uint8_t *, uint64_t);
 662 int             _dwarf_write_uleb128_alloc(uint8_t **, uint64_t *, uint64_t *,
 663                     uint64_t, Dwarf_Error *);
 664
 665 #endif /* !__LIBDWARF_H_ */