mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-24 10:35:12 +08:00
316 lines
8.6 KiB
C++
316 lines
8.6 KiB
C++
/* Build symbol tables in GDB's internal format.
|
||
Copyright (C) 1986-2018 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
#if !defined (BUILDSYM_H)
|
||
#define BUILDSYM_H 1
|
||
|
||
struct objfile;
|
||
struct symbol;
|
||
struct addrmap;
|
||
struct compunit_symtab;
|
||
enum language;
|
||
|
||
/* This module provides definitions used for creating and adding to
|
||
the symbol table. These routines are called from various symbol-
|
||
file-reading routines.
|
||
|
||
They originated in dbxread.c of gdb-4.2, and were split out to
|
||
make xcoffread.c more maintainable by sharing code.
|
||
|
||
Variables declared in this file can be defined by #define-ing the
|
||
name EXTERN to null. It is used to declare variables that are
|
||
normally extern, but which get defined in a single module using
|
||
this technique. */
|
||
|
||
struct block;
|
||
struct pending_block;
|
||
|
||
struct dynamic_prop;
|
||
|
||
#ifndef EXTERN
|
||
#define EXTERN extern
|
||
#endif
|
||
|
||
#define HASHSIZE 127 /* Size of things hashed via
|
||
hashname(). */
|
||
|
||
/* Core address of start of text of current source file. This too
|
||
comes from the N_SO symbol. For Dwarf it typically comes from the
|
||
DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
|
||
|
||
EXTERN CORE_ADDR last_source_start_addr;
|
||
|
||
/* The list of sub-source-files within the current individual
|
||
compilation. Each file gets its own symtab with its own linetable
|
||
and associated info, but they all share one blockvector. */
|
||
|
||
struct subfile
|
||
{
|
||
struct subfile *next;
|
||
/* Space for this is malloc'd. */
|
||
char *name;
|
||
/* Space for this is malloc'd. */
|
||
struct linetable *line_vector;
|
||
int line_vector_length;
|
||
/* The "containing" compunit. */
|
||
struct buildsym_compunit *buildsym_compunit;
|
||
enum language language;
|
||
struct symtab *symtab;
|
||
};
|
||
|
||
EXTERN struct subfile *current_subfile;
|
||
|
||
/* Global variable which, when set, indicates that we are processing a
|
||
.o file compiled with gcc */
|
||
|
||
EXTERN unsigned char processing_gcc_compilation;
|
||
|
||
/* When set, we are processing a .o file compiled by sun acc. This is
|
||
misnamed; it refers to all stabs-in-elf implementations which use
|
||
N_UNDF the way Sun does, including Solaris gcc. Hopefully all
|
||
stabs-in-elf implementations ever invented will choose to be
|
||
compatible. */
|
||
|
||
EXTERN unsigned char processing_acc_compilation;
|
||
|
||
/* Count symbols as they are processed, for error messages. */
|
||
|
||
EXTERN unsigned int symnum;
|
||
|
||
/* Record the symbols defined for each context in a list. We don't
|
||
create a struct block for the context until we know how long to
|
||
make it. */
|
||
|
||
#define PENDINGSIZE 100
|
||
|
||
struct pending
|
||
{
|
||
struct pending *next;
|
||
int nsyms;
|
||
struct symbol *symbol[PENDINGSIZE];
|
||
};
|
||
|
||
/* Here are the three lists that symbols are put on. */
|
||
|
||
/* static at top level, and types */
|
||
|
||
EXTERN struct pending *file_symbols;
|
||
|
||
/* global functions and variables */
|
||
|
||
EXTERN struct pending *global_symbols;
|
||
|
||
/* everything local to lexical context */
|
||
|
||
EXTERN struct pending *local_symbols;
|
||
|
||
/* "using" directives local to lexical context. */
|
||
|
||
EXTERN struct using_direct *local_using_directives;
|
||
|
||
/* global "using" directives. */
|
||
|
||
EXTERN struct using_direct *global_using_directives;
|
||
|
||
/* Stack representing unclosed lexical contexts (that will become
|
||
blocks, eventually). */
|
||
|
||
struct context_stack
|
||
{
|
||
/* Outer locals at the time we entered */
|
||
|
||
struct pending *locals;
|
||
|
||
/* Pending using directives at the time we entered. */
|
||
|
||
struct using_direct *local_using_directives;
|
||
|
||
/* Pointer into blocklist as of entry */
|
||
|
||
struct pending_block *old_blocks;
|
||
|
||
/* Name of function, if any, defining context */
|
||
|
||
struct symbol *name;
|
||
|
||
/* Expression that computes the frame base of the lexically enclosing
|
||
function, if any. NULL otherwise. */
|
||
|
||
struct dynamic_prop *static_link;
|
||
|
||
/* PC where this context starts */
|
||
|
||
CORE_ADDR start_addr;
|
||
|
||
/* Temp slot for exception handling. */
|
||
|
||
CORE_ADDR end_addr;
|
||
|
||
/* For error-checking matching push/pop */
|
||
|
||
int depth;
|
||
|
||
};
|
||
|
||
EXTERN struct context_stack *context_stack;
|
||
|
||
/* Index of first unused entry in context stack. */
|
||
|
||
EXTERN int context_stack_depth;
|
||
|
||
/* Currently allocated size of context stack. */
|
||
|
||
EXTERN int context_stack_size;
|
||
|
||
/* Non-zero if the context stack is empty. */
|
||
#define outermost_context_p() (context_stack_depth == 0)
|
||
|
||
/* Nonzero if within a function (so symbols should be local, if
|
||
nothing says specifically). */
|
||
|
||
EXTERN int within_function;
|
||
|
||
/* The type of the record_line function. */
|
||
typedef void (record_line_ftype) (struct subfile *subfile, int line,
|
||
CORE_ADDR pc);
|
||
|
||
|
||
|
||
#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
|
||
|
||
/* Function to invoke get the next symbol. Return the symbol name. */
|
||
|
||
EXTERN const char *(*next_symbol_text_func) (struct objfile *);
|
||
|
||
extern void add_symbol_to_list (struct symbol *symbol,
|
||
struct pending **listhead);
|
||
|
||
extern struct symbol *find_symbol_in_list (struct pending *list,
|
||
char *name, int length);
|
||
|
||
extern struct block *finish_block (struct symbol *symbol,
|
||
struct pending **listhead,
|
||
struct pending_block *old_blocks,
|
||
const struct dynamic_prop *static_link,
|
||
CORE_ADDR start,
|
||
CORE_ADDR end);
|
||
|
||
extern void record_block_range (struct block *,
|
||
CORE_ADDR start, CORE_ADDR end_inclusive);
|
||
|
||
class scoped_free_pendings
|
||
{
|
||
public:
|
||
|
||
scoped_free_pendings () = default;
|
||
~scoped_free_pendings ();
|
||
|
||
DISABLE_COPY_AND_ASSIGN (scoped_free_pendings);
|
||
};
|
||
|
||
extern void start_subfile (const char *name);
|
||
|
||
extern void patch_subfile_names (struct subfile *subfile, const char *name);
|
||
|
||
extern void push_subfile (void);
|
||
|
||
extern char *pop_subfile (void);
|
||
|
||
extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
|
||
int expandable,
|
||
int required);
|
||
|
||
extern struct compunit_symtab *
|
||
end_symtab_from_static_block (struct block *static_block,
|
||
int section, int expandable);
|
||
|
||
extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);
|
||
|
||
extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
|
||
int section);
|
||
|
||
extern void augment_type_symtab (void);
|
||
|
||
/* Defined in stabsread.c. */
|
||
|
||
extern void scan_file_globals (struct objfile *objfile);
|
||
|
||
extern void buildsym_new_init (void);
|
||
|
||
extern void buildsym_init (void);
|
||
|
||
extern struct context_stack *push_context (int desc, CORE_ADDR valu);
|
||
|
||
extern struct context_stack *pop_context (void);
|
||
|
||
extern record_line_ftype record_line;
|
||
|
||
extern struct compunit_symtab *start_symtab (struct objfile *objfile,
|
||
const char *name,
|
||
const char *comp_dir,
|
||
CORE_ADDR start_addr,
|
||
enum language language);
|
||
|
||
extern void restart_symtab (struct compunit_symtab *cust,
|
||
const char *name, CORE_ADDR start_addr);
|
||
|
||
extern int hashname (const char *name);
|
||
|
||
extern void free_pending_blocks (void);
|
||
|
||
/* Record the name of the debug format in the current pending symbol
|
||
table. FORMAT must be a string with a lifetime at least as long as
|
||
the symtab's objfile. */
|
||
|
||
extern void record_debugformat (const char *format);
|
||
|
||
/* Record the name of the debuginfo producer (usually the compiler) in
|
||
the current pending symbol table. PRODUCER must be a string with a
|
||
lifetime at least as long as the symtab's objfile. */
|
||
|
||
extern void record_producer (const char *producer);
|
||
|
||
extern void merge_symbol_lists (struct pending **srclist,
|
||
struct pending **targetlist);
|
||
|
||
/* Set the name of the last source file. NAME is copied by this
|
||
function. */
|
||
|
||
extern void set_last_source_file (const char *name);
|
||
|
||
/* Fetch the name of the last source file. */
|
||
|
||
extern const char *get_last_source_file (void);
|
||
|
||
/* Return the compunit symtab object.
|
||
It is only valid to call this between calls to start_symtab and the
|
||
end_symtab* functions. */
|
||
|
||
extern struct compunit_symtab *buildsym_compunit_symtab (void);
|
||
|
||
/* Return the macro table.
|
||
Initialize it if this is the first use.
|
||
It is only valid to call this between calls to start_symtab and the
|
||
end_symtab* functions. */
|
||
|
||
extern struct macro_table *get_macro_table (void);
|
||
|
||
#undef EXTERN
|
||
|
||
#endif /* defined (BUILDSYM_H) */
|