mirror of
https://sourceware.org/git/binutils-gdb.git
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316 lines
8.6 KiB
C++
316 lines
8.6 KiB
C++
/* Build symbol tables in GDB's internal format.
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Copyright (C) 1986-2018 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 3 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, see <http://www.gnu.org/licenses/>. */
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#if !defined (BUILDSYM_H)
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#define BUILDSYM_H 1
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struct objfile;
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struct symbol;
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struct addrmap;
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struct compunit_symtab;
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enum language;
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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 the
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name EXTERN to null. It is used to declare variables that are
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normally extern, but which get defined in a single module using
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this technique. */
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struct block;
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struct pending_block;
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struct dynamic_prop;
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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
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hashname(). */
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/* Core address of start of text of current source file. This too
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comes from the N_SO symbol. For Dwarf it typically comes from the
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DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
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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
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compilation. Each file gets its own symtab with its own linetable
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and associated info, 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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/* Space for this is malloc'd. */
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char *name;
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/* Space for this is malloc'd. */
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struct linetable *line_vector;
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int line_vector_length;
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/* The "containing" compunit. */
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struct buildsym_compunit *buildsym_compunit;
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enum language language;
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struct symtab *symtab;
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};
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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. We don't
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create a struct block for the context until we know how long to
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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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/* Here are the three lists that symbols are put on. */
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/* static at top level, and types */
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EXTERN struct pending *file_symbols;
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/* global functions and variables */
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EXTERN struct pending *global_symbols;
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/* everything local to lexical context */
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EXTERN struct pending *local_symbols;
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/* "using" directives local to lexical context. */
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EXTERN struct using_direct *local_using_directives;
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/* global "using" directives. */
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EXTERN struct using_direct *global_using_directives;
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/* Stack representing unclosed lexical contexts (that will become
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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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/* Pending using directives at the time we entered. */
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struct using_direct *local_using_directives;
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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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/* Expression that computes the frame base of the lexically enclosing
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function, if any. NULL otherwise. */
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struct dynamic_prop *static_link;
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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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/* Non-zero if the context stack is empty. */
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#define outermost_context_p() (context_stack_depth == 0)
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/* Nonzero if within a function (so symbols should be local, if
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nothing says specifically). */
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EXTERN int within_function;
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/* The type of the record_line function. */
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typedef void (record_line_ftype) (struct subfile *subfile, int line,
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CORE_ADDR pc);
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#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
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/* Function to invoke get the next symbol. Return the symbol name. */
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EXTERN const char *(*next_symbol_text_func) (struct objfile *);
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extern void add_symbol_to_list (struct symbol *symbol,
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struct pending **listhead);
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extern struct symbol *find_symbol_in_list (struct pending *list,
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char *name, int length);
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extern struct block *finish_block (struct symbol *symbol,
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struct pending **listhead,
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struct pending_block *old_blocks,
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const struct dynamic_prop *static_link,
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CORE_ADDR start,
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CORE_ADDR end);
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extern void record_block_range (struct block *,
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CORE_ADDR start, CORE_ADDR end_inclusive);
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class scoped_free_pendings
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{
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public:
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scoped_free_pendings () = default;
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~scoped_free_pendings ();
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DISABLE_COPY_AND_ASSIGN (scoped_free_pendings);
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};
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extern void start_subfile (const char *name);
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extern void patch_subfile_names (struct subfile *subfile, const char *name);
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extern void push_subfile (void);
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extern char *pop_subfile (void);
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extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
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int expandable,
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int required);
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extern struct compunit_symtab *
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end_symtab_from_static_block (struct block *static_block,
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int section, int expandable);
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extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);
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extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
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int section);
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extern void augment_type_symtab (void);
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/* Defined in stabsread.c. */
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extern void scan_file_globals (struct objfile *objfile);
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extern void buildsym_new_init (void);
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extern void buildsym_init (void);
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extern struct context_stack *push_context (int desc, CORE_ADDR valu);
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extern struct context_stack *pop_context (void);
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extern record_line_ftype record_line;
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extern struct compunit_symtab *start_symtab (struct objfile *objfile,
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const char *name,
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const char *comp_dir,
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CORE_ADDR start_addr,
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enum language language);
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extern void restart_symtab (struct compunit_symtab *cust,
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const char *name, CORE_ADDR start_addr);
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extern int hashname (const char *name);
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extern void free_pending_blocks (void);
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/* Record the name of the debug format in the current pending symbol
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table. FORMAT must be a string with a lifetime at least as long as
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the symtab's objfile. */
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extern void record_debugformat (const char *format);
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/* Record the name of the debuginfo producer (usually the compiler) in
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the current pending symbol table. PRODUCER must be a string with a
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lifetime at least as long as the symtab's objfile. */
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extern void record_producer (const char *producer);
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extern void merge_symbol_lists (struct pending **srclist,
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struct pending **targetlist);
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/* Set the name of the last source file. NAME is copied by this
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function. */
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extern void set_last_source_file (const char *name);
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/* Fetch the name of the last source file. */
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extern const char *get_last_source_file (void);
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/* Return the compunit symtab object.
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It is only valid to call this between calls to start_symtab and the
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end_symtab* functions. */
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extern struct compunit_symtab *buildsym_compunit_symtab (void);
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/* Return the macro table.
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Initialize it if this is the first use.
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It is only valid to call this between calls to start_symtab and the
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end_symtab* functions. */
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extern struct macro_table *get_macro_table (void);
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#undef EXTERN
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#endif /* defined (BUILDSYM_H) */
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