gdb/buildsym.h - gdb

Global variables defined

Data types defined

Macros defined

Source code

  1. /* Build symbol tables in GDB's internal format.
  2.    Copyright (C) 1986-2015 Free Software Foundation, Inc.

  4.    This file is part of GDB.

  6.    This program is free software; you can redistribute it and/or modify
  7.    it under the terms of the GNU General Public License as published by
  8.    the Free Software Foundation; either version 3 of the License, or
  9.    (at your option) any later version.

  11.    This program is distributed in the hope that it will be useful,
  12.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14.    GNU General Public License for more details.

  16.    You should have received a copy of the GNU General Public License
  17.    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

  19. #if !defined (BUILDSYM_H)
  20. ‌#define BUILDSYM_H 1

  22. struct objfile;
  23. struct symbol;
  24. struct addrmap;
  25. struct compunit_symtab;

  27. /* This module provides definitions used for creating and adding to
  28.    the symbol table.  These routines are called from various symbol-
  29.    file-reading routines.

  31.    They originated in dbxread.c of gdb-4.2, and were split out to
  32.    make xcoffread.c more maintainable by sharing code.

  34.    Variables declared in this file can be defined by #define-ing the
  35.    name EXTERN to null.  It is used to declare variables that are
  36.    normally extern, but which get defined in a single module using
  37.    this technique.  */

  39. struct block;
  40. struct pending_block;

  42. #ifndef EXTERN
  43. ‌#define        EXTERN extern
  44. #endif

  46. ‌#define HASHSIZE 127                /* Size of things hashed via
  47.                                    hashname().  */

  49. /* Core address of start of text of current source file.  This too
  50.    comes from the N_SO symbol.  For Dwarf it typically comes from the
  51.    DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE.  */

  53. ‌EXTERN CORE_ADDR last_source_start_addr;

  55. /* The list of sub-source-files within the current individual
  56.    compilation.  Each file gets its own symtab with its own linetable
  57.    and associated info, but they all share one blockvector.  */

  59. ‌struct subfile
  60. {
  61.   struct subfile *next;
  62.   /* Space for this is malloc'd.  */
  63.   char *name;
  64.   /* Space for this is malloc'd.  */
  65.   struct linetable *line_vector;
  66.   int line_vector_length;
  67.   /* The "containing" compunit.  */
  68.   struct buildsym_compunit *buildsym_compunit;
  69.   enum language language;
  70.   struct symtab *symtab;
  71. };

  73. ‌EXTERN struct subfile *current_subfile;

  75. /* Global variable which, when set, indicates that we are processing a
  76.    .o file compiled with gcc */

  78. ‌EXTERN unsigned char processing_gcc_compilation;

  80. /* When set, we are processing a .o file compiled by sun acc.  This is
  81.    misnamed; it refers to all stabs-in-elf implementations which use
  82.    N_UNDF the way Sun does, including Solaris gcc.  Hopefully all
  83.    stabs-in-elf implementations ever invented will choose to be
  84.    compatible.  */

  86. ‌EXTERN unsigned char processing_acc_compilation;

  88. /* Count symbols as they are processed, for error messages.  */

  90. ‌EXTERN unsigned int symnum;

  92. /* Record the symbols defined for each context in a list.  We don't
  93.    create a struct block for the context until we know how long to
  94.    make it.  */

  96. ‌#define PENDINGSIZE 100

  98. ‌struct pending
  99.   {
  100.     struct pending *next;
  101.     int nsyms;
  102.     struct symbol *symbol[PENDINGSIZE];
  103.   };

  105. /* Here are the three lists that symbols are put on.  */

  107. /* static at top level, and types */

  109. ‌EXTERN struct pending *file_symbols;

  111. /* global functions and variables */

  113. ‌EXTERN struct pending *global_symbols;

  115. /* everything local to lexical context */

  117. ‌EXTERN struct pending *local_symbols;

  119. /* "using" directives local to lexical context.  */

  121. ‌EXTERN struct using_direct *using_directives;

  123. /* Stack representing unclosed lexical contexts (that will become
  124.    blocks, eventually).  */

  126. ‌struct context_stack
  127.   {
  128.     /* Outer locals at the time we entered */

  130.     struct pending *locals;

  132.     /* Pending using directives at the time we entered.  */

  134.     struct using_direct *using_directives;

  136.     /* Pointer into blocklist as of entry */

  138.     struct pending_block *old_blocks;

  140.     /* Name of function, if any, defining context */

  142.     struct symbol *name;

  144.     /* PC where this context starts */

  146.     CORE_ADDR start_addr;

  148.     /* Temp slot for exception handling.  */

  150.     CORE_ADDR end_addr;

  152.     /* For error-checking matching push/pop */

  154.     int depth;

  156.   };

  158. ‌EXTERN struct context_stack *context_stack;

  160. /* Index of first unused entry in context stack.  */

  162. ‌EXTERN int context_stack_depth;

  164. /* Currently allocated size of context stack.  */

  166. ‌EXTERN int context_stack_size;

  168. /* Non-zero if the context stack is empty.  */
  169. ‌#define outermost_context_p() (context_stack_depth == 0)

  171. /* Nonzero if within a function (so symbols should be local, if
  172.    nothing says specifically).  */

  174. ‌EXTERN int within_function;

  176. /* The type of the record_line function.  */
  177. ‌typedef void (record_line_ftype) (struct subfile *subfile, int line,
  178.                                   CORE_ADDR pc);



  182. ‌#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)

  184. /* Function to invoke get the next symbol.  Return the symbol name.  */

  186. ‌EXTERN char *(*next_symbol_text_func) (struct objfile *);

  188. extern void add_symbol_to_list (struct symbol *symbol,
  189.                                 struct pending **listhead);

  191. extern struct symbol *find_symbol_in_list (struct pending *list,
  192.                                            char *name, int length);

  194. extern struct block *finish_block (struct symbol *symbol,
  195.                                    struct pending **listhead,
  196.                                    struct pending_block *old_blocks,
  197.                                    CORE_ADDR start, CORE_ADDR end);

  199. extern void record_block_range (struct block *,
  200.                                 CORE_ADDR start, CORE_ADDR end_inclusive);

  202. extern void really_free_pendings (void *dummy);

  204. extern void start_subfile (const char *name);

  206. extern void patch_subfile_names (struct subfile *subfile, char *name);

  208. extern void push_subfile (void);

  210. extern char *pop_subfile (void);

  212. extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
  213.                                                   int expandable,
  214.                                                   int required);

  216. extern struct compunit_symtab *
  217.   end_symtab_from_static_block (struct block *static_block,
  218.                                 int section, int expandable);

  220. extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);

  222. extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
  223.                                                       int section);

  225. extern void augment_type_symtab (void);

  227. /* Defined in stabsread.c.  */

  229. extern void scan_file_globals (struct objfile *objfile);

  231. extern void buildsym_new_init (void);

  233. extern void buildsym_init (void);

  235. extern struct context_stack *push_context (int desc, CORE_ADDR valu);

  237. extern struct context_stack *pop_context (void);

  239. extern record_line_ftype record_line;

  241. extern struct compunit_symtab *start_symtab (struct objfile *objfile,
  242.                                              const char *name,
  243.                                              const char *comp_dir,
  244.                                              CORE_ADDR start_addr);

  246. extern void restart_symtab (struct compunit_symtab *cust,
  247.                             const char *name, CORE_ADDR start_addr);

  249. extern int hashname (const char *name);

  251. extern void free_pending_blocks (void);

  253. /* Record the name of the debug format in the current pending symbol
  254.    table.  FORMAT must be a string with a lifetime at least as long as
  255.    the symtab's objfile.  */

  257. extern void record_debugformat (const char *format);

  259. /* Record the name of the debuginfo producer (usually the compiler) in
  260.    the current pending symbol table.  PRODUCER must be a string with a
  261.    lifetime at least as long as the symtab's objfile.  */

  263. extern void record_producer (const char *producer);

  265. extern void merge_symbol_lists (struct pending **srclist,
  266.                                 struct pending **targetlist);

  268. /* Set the name of the last source file.  NAME is copied by this
  269.    function.  */

  271. extern void set_last_source_file (const char *name);

  273. /* Fetch the name of the last source file.  */

  275. extern const char *get_last_source_file (void);

  277. /* Return the compunit symtab object.
  278.    It is only valid to call this between calls to start_symtab and the
  279.    end_symtab* functions.  */

  281. extern struct compunit_symtab *buildsym_compunit_symtab (void);

  283. /* Return the macro table.
  284.    Initialize it if this is the first use.
  285.    It is only valid to call this between calls to start_symtab and the
  286.    end_symtab* functions.  */

  288. extern struct macro_table *get_macro_table (void);

  290. ‌#undef EXTERN

  292. #endif /* defined (BUILDSYM_H) */