170 lines
5.3 KiB
C
170 lines
5.3 KiB
C
/* Code dealing with blocks for GDB.
|
|
|
|
Copyright (C) 2003, 2007, 2008, 2009, 2010 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/>. */
|
|
|
|
#ifndef BLOCK_H
|
|
#define BLOCK_H
|
|
|
|
/* Opaque declarations. */
|
|
|
|
struct symbol;
|
|
struct symtab;
|
|
struct block_namespace_info;
|
|
struct using_direct;
|
|
struct obstack;
|
|
struct dictionary;
|
|
struct addrmap;
|
|
|
|
/* All of the name-scope contours of the program
|
|
are represented by `struct block' objects.
|
|
All of these objects are pointed to by the blockvector.
|
|
|
|
Each block represents one name scope.
|
|
Each lexical context has its own block.
|
|
|
|
The blockvector begins with some special blocks.
|
|
The GLOBAL_BLOCK contains all the symbols defined in this compilation
|
|
whose scope is the entire program linked together.
|
|
The STATIC_BLOCK contains all the symbols whose scope is the
|
|
entire compilation excluding other separate compilations.
|
|
Blocks starting with the FIRST_LOCAL_BLOCK are not special.
|
|
|
|
Each block records a range of core addresses for the code that
|
|
is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK
|
|
give, for the range of code, the entire range of code produced
|
|
by the compilation that the symbol segment belongs to.
|
|
|
|
The blocks appear in the blockvector
|
|
in order of increasing starting-address,
|
|
and, within that, in order of decreasing ending-address.
|
|
|
|
This implies that within the body of one function
|
|
the blocks appear in the order of a depth-first tree walk. */
|
|
|
|
struct block
|
|
{
|
|
|
|
/* Addresses in the executable code that are in this block. */
|
|
|
|
CORE_ADDR startaddr;
|
|
CORE_ADDR endaddr;
|
|
|
|
/* The symbol that names this block, if the block is the body of a
|
|
function (real or inlined); otherwise, zero. */
|
|
|
|
struct symbol *function;
|
|
|
|
/* The `struct block' for the containing block, or 0 if none.
|
|
|
|
The superblock of a top-level local block (i.e. a function in the
|
|
case of C) is the STATIC_BLOCK. The superblock of the
|
|
STATIC_BLOCK is the GLOBAL_BLOCK. */
|
|
|
|
struct block *superblock;
|
|
|
|
/* This is used to store the symbols in the block. */
|
|
|
|
struct dictionary *dict;
|
|
|
|
/* Used for language-specific info. */
|
|
|
|
union
|
|
{
|
|
struct
|
|
{
|
|
/* Contains information about namespace-related info relevant to
|
|
this block: using directives and the current namespace
|
|
scope. */
|
|
|
|
struct block_namespace_info *namespace;
|
|
}
|
|
cplus_specific;
|
|
}
|
|
language_specific;
|
|
};
|
|
|
|
#define BLOCK_START(bl) (bl)->startaddr
|
|
#define BLOCK_END(bl) (bl)->endaddr
|
|
#define BLOCK_FUNCTION(bl) (bl)->function
|
|
#define BLOCK_SUPERBLOCK(bl) (bl)->superblock
|
|
#define BLOCK_DICT(bl) (bl)->dict
|
|
#define BLOCK_NAMESPACE(bl) (bl)->language_specific.cplus_specific.namespace
|
|
|
|
/* Macro to loop through all symbols in a block BL, in no particular
|
|
order. ITER helps keep track of the iteration, and should be a
|
|
struct dict_iterator. SYM points to the current symbol. */
|
|
|
|
#define ALL_BLOCK_SYMBOLS(block, iter, sym) \
|
|
ALL_DICT_SYMBOLS (BLOCK_DICT (block), iter, sym)
|
|
|
|
struct blockvector
|
|
{
|
|
/* Number of blocks in the list. */
|
|
int nblocks;
|
|
/* An address map mapping addresses to blocks in this blockvector.
|
|
This pointer is zero if the blocks' start and end addresses are
|
|
enough. */
|
|
struct addrmap *map;
|
|
/* The blocks themselves. */
|
|
struct block *block[1];
|
|
};
|
|
|
|
#define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks
|
|
#define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n]
|
|
#define BLOCKVECTOR_MAP(blocklist) ((blocklist)->map)
|
|
|
|
/* Special block numbers */
|
|
|
|
enum { GLOBAL_BLOCK = 0, STATIC_BLOCK = 1, FIRST_LOCAL_BLOCK = 2 };
|
|
|
|
extern struct symbol *block_linkage_function (const struct block *);
|
|
|
|
extern int block_inlined_p (const struct block *block);
|
|
|
|
extern int contained_in (const struct block *, const struct block *);
|
|
|
|
extern struct blockvector *blockvector_for_pc (CORE_ADDR, struct block **);
|
|
|
|
extern struct blockvector *blockvector_for_pc_sect (CORE_ADDR,
|
|
struct obj_section *,
|
|
struct block **,
|
|
struct symtab *);
|
|
|
|
extern struct block *block_for_pc (CORE_ADDR);
|
|
|
|
extern struct block *block_for_pc_sect (CORE_ADDR, struct obj_section *);
|
|
|
|
extern const char *block_scope (const struct block *block);
|
|
|
|
extern void block_set_scope (struct block *block, const char *scope,
|
|
struct obstack *obstack);
|
|
|
|
extern struct using_direct *block_using (const struct block *block);
|
|
|
|
extern void block_set_using (struct block *block,
|
|
struct using_direct *using,
|
|
struct obstack *obstack);
|
|
|
|
extern const struct block *block_static_block (const struct block *block);
|
|
|
|
extern const struct block *block_global_block (const struct block *block);
|
|
|
|
extern struct block *allocate_block (struct obstack *obstack);
|
|
|
|
#endif /* BLOCK_H */
|