| /* Code dealing with blocks for GDB. |
| |
| Copyright (C) 2003, 2007-2012 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) |
| |
| extern struct symbol *block_linkage_function (const struct block *); |
| |
| extern struct symbol *block_containing_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 call_site *call_site_for_pc (struct gdbarch *gdbarch, |
| CORE_ADDR pc); |
| |
| 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 */ |