260 lines
6.7 KiB
C
260 lines
6.7 KiB
C
/* Build symbol tables in GDB's internal format.
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Copyright (C) 1986-1991 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (BUILDSYM_H)
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#define BUILDSYM_H 1
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/* This module provides definitions used for creating and adding to
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the symbol table. These routines are called from various symbol-
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file-reading routines.
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They originated in dbxread.c of gdb-4.2, and were split out to
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make xcoffread.c more maintainable by sharing code.
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Variables declared in this file can be defined by #define-ing
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the name EXTERN to null. It is used to declare variables that
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are normally extern, but which get defined in a single module
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using this technique. */
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#ifndef EXTERN
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#define EXTERN extern
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#endif
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#define HASHSIZE 127 /* Size of things hashed via hashname() */
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/* Name of source file whose symbol data we are now processing.
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This comes from a symbol of type N_SO. */
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EXTERN char *last_source_file;
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/* Core address of start of text of current source file.
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This too comes from the N_SO symbol. */
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EXTERN CORE_ADDR last_source_start_addr;
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/* The list of sub-source-files within the current individual compilation.
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Each file gets its own symtab with its own linetable and associated info,
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but they all share one blockvector. */
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struct subfile
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{
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struct subfile *next;
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char *name;
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char *dirname;
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struct linetable *line_vector;
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int line_vector_length;
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enum language language;
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};
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EXTERN struct subfile *subfiles;
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EXTERN struct subfile *current_subfile;
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/* Global variable which, when set, indicates that we are processing a
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.o file compiled with gcc */
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EXTERN unsigned char processing_gcc_compilation;
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/* When set, we are processing a .o file compiled by sun acc. This is
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misnamed; it refers to all stabs-in-elf implementations which use
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N_UNDF the way Sun does, including Solaris gcc. Hopefully all
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stabs-in-elf implementations ever invented will choose to be
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compatible. */
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EXTERN unsigned char processing_acc_compilation;
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/* Count symbols as they are processed, for error messages. */
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EXTERN unsigned int symnum;
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/* Record the symbols defined for each context in a list.
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We don't create a struct block for the context until we
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know how long to make it. */
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#define PENDINGSIZE 100
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struct pending
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{
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struct pending *next;
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int nsyms;
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struct symbol *symbol[PENDINGSIZE];
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};
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/* List of free `struct pending' structures for reuse. */
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EXTERN struct pending *free_pendings;
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/* Here are the three lists that symbols are put on. */
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EXTERN struct pending *file_symbols; /* static at top level, and types */
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EXTERN struct pending *global_symbols; /* global functions and variables */
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EXTERN struct pending *local_symbols; /* everything local to lexic context */
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/* Stack representing unclosed lexical contexts
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(that will become blocks, eventually). */
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struct context_stack
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{
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/* Outer locals at the time we entered */
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struct pending *locals;
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/* Pointer into blocklist as of entry */
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struct pending_block *old_blocks;
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/* Name of function, if any, defining context*/
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struct symbol *name;
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/* PC where this context starts */
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CORE_ADDR start_addr;
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/* Temp slot for exception handling. */
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CORE_ADDR end_addr;
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/* For error-checking matching push/pop */
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int depth;
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};
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EXTERN struct context_stack *context_stack;
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/* Index of first unused entry in context stack. */
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EXTERN int context_stack_depth;
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/* Currently allocated size of context stack. */
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EXTERN int context_stack_size;
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/* Macro "function" for popping contexts from the stack. Pushing is done
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by a real function, push_context. This returns a pointer to a struct
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context_stack. */
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#define pop_context() (&context_stack[--context_stack_depth]);
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/* Nonzero if within a function (so symbols should be local,
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if nothing says specifically). */
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EXTERN int within_function;
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/* List of blocks already made (lexical contexts already closed).
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This is used at the end to make the blockvector. */
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struct pending_block
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{
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struct pending_block *next;
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struct block *block;
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};
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EXTERN struct pending_block *pending_blocks;
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struct subfile_stack
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{
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struct subfile_stack *next;
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char *name;
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};
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EXTERN struct subfile_stack *subfile_stack;
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#define next_symbol_text() (*next_symbol_text_func)()
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/* Function to invoke get the next symbol. Return the symbol name. */
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EXTERN char *(*next_symbol_text_func) PARAMS ((void));
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/* Vector of types defined so far, indexed by their type numbers.
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Used for both stabs and coff.
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(In newer sun systems, dbx uses a pair of numbers in parens,
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as in "(SUBFILENUM,NUMWITHINSUBFILE)". Then these numbers must be
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translated through the type_translations hash table to get
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the index into the type vector.) */
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EXTERN struct type **type_vector;
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/* Number of elements allocated for type_vector currently. */
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EXTERN int type_vector_length;
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/* Initial size of type vector. Is realloc'd larger if needed,
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and realloc'd down to the size actually used, when completed. */
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#define INITIAL_TYPE_VECTOR_LENGTH 160
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extern void
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add_symbol_to_list PARAMS ((struct symbol *, struct pending **));
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extern struct symbol *
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find_symbol_in_list PARAMS ((struct pending *, char *, int));
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extern void
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finish_block PARAMS ((struct symbol *, struct pending **,
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struct pending_block *, CORE_ADDR, CORE_ADDR,
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struct objfile *));
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extern void
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really_free_pendings PARAMS ((int foo));
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extern void
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start_subfile PARAMS ((char *, char *));
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extern void
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patch_subfile_names PARAMS ((struct subfile *subfile, char *name));
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extern void
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push_subfile PARAMS ((void));
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extern char *
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pop_subfile PARAMS ((void));
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extern struct symtab *
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end_symtab PARAMS ((CORE_ADDR, int, int, struct objfile *, int));
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extern void
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scan_file_globals PARAMS ((struct objfile *));
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extern void
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buildsym_new_init PARAMS ((void));
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extern void
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buildsym_init PARAMS ((void));
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extern struct context_stack *
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push_context PARAMS ((int, CORE_ADDR));
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extern void
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record_line PARAMS ((struct subfile *, int, CORE_ADDR));
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extern void
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start_symtab PARAMS ((char *, char *, CORE_ADDR));
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extern int
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hashname PARAMS ((char *));
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#undef EXTERN
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#endif /* defined (BUILDSYM_H) */
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