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526e70c05f
* block.h (BLOCK_SHOULD_SORT): Delete. * symtab.c (lookup_block_symbol): Don't worry about sorted linear blocks. * ada-lang.c (ada_add_block_symbols): Ditto. * symfile.c (sort_block_syms): Delete. (sort_symtab_syms): Ditto. * symfile.h: Delete sort_symtabs_syms and sort_block_syms declarations. * coffread.c (coff_symfile_read): Don't call sort_symtab_syms. * dbxread.c (dbx_psymtab_to_symtab_1): Ditto. * dwarf2read.c (psymtab_to_symtab_1): Ditto. * dwarfread.c (psymtab_to_symtab_1): Ditto. * hpread.c (hpread_psymtab_to_symtab_1): Ditto. * mdebugread.c (psymtab_to_symtab_1): Ditto. * xcoffread.c (xcoff_psymtab_to_symtab_1): Ditto.
211 lines
6.9 KiB
C
211 lines
6.9 KiB
C
/* Code dealing with blocks for GDB.
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Copyright 2003 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., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef BLOCK_H
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#define BLOCK_H
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/* Opaque declarations. */
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struct symbol;
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struct symtab;
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struct block_namespace_info;
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struct using_direct;
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struct obstack;
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/* All of the name-scope contours of the program
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are represented by `struct block' objects.
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All of these objects are pointed to by the blockvector.
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Each block represents one name scope.
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Each lexical context has its own block.
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The blockvector begins with some special blocks.
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The GLOBAL_BLOCK contains all the symbols defined in this compilation
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whose scope is the entire program linked together.
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The STATIC_BLOCK contains all the symbols whose scope is the
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entire compilation excluding other separate compilations.
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Blocks starting with the FIRST_LOCAL_BLOCK are not special.
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Each block records a range of core addresses for the code that
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is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK
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give, for the range of code, the entire range of code produced
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by the compilation that the symbol segment belongs to.
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The blocks appear in the blockvector
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in order of increasing starting-address,
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and, within that, in order of decreasing ending-address.
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This implies that within the body of one function
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the blocks appear in the order of a depth-first tree walk. */
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struct block
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{
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/* Addresses in the executable code that are in this block. */
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CORE_ADDR startaddr;
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CORE_ADDR endaddr;
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/* The symbol that names this block, if the block is the body of a
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function; otherwise, zero. */
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struct symbol *function;
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/* The `struct block' for the containing block, or 0 if none.
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The superblock of a top-level local block (i.e. a function in the
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case of C) is the STATIC_BLOCK. The superblock of the
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STATIC_BLOCK is the GLOBAL_BLOCK. */
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struct block *superblock;
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/* Used for language-specific info. */
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union
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{
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struct
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{
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/* Contains information about namespace-related info relevant to
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this block: using directives and the current namespace
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scope. */
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struct block_namespace_info *namespace;
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}
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cplus_specific;
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}
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language_specific;
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/* Version of GCC used to compile the function corresponding
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to this block, or 0 if not compiled with GCC. When possible,
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GCC should be compatible with the native compiler, or if that
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is not feasible, the differences should be fixed during symbol
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reading. As of 16 Apr 93, this flag is never used to distinguish
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between gcc2 and the native compiler.
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If there is no function corresponding to this block, this meaning
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of this flag is undefined. */
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unsigned char gcc_compile_flag;
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/* The symbols for this block are either in a simple linear list or
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in a simple hashtable. Blocks which correspond to a function
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(which have a list of symbols corresponding to arguments) use
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a linear list, as do some older symbol readers (currently only
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mdebugread and dstread). Other blocks are hashed.
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The hashtable uses the same hash function as the minsym hashtables,
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found in minsyms.c:minsym_hash_iw. Symbols are hashed based on
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their demangled name if appropriate, and on their name otherwise.
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The hash function ignores space, and stops at the beginning of the
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argument list if any.
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The table is laid out in NSYMS/5 buckets and symbols are chained via
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their hash_next field. */
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/* If this is really a hashtable of the symbols, this flag is 1. */
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unsigned char hashtable;
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/* Number of local symbols. */
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int nsyms;
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/* The symbols. If some of them are arguments, then they must be
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in the order in which we would like to print them. */
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struct symbol *sym[1];
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};
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#define BLOCK_START(bl) (bl)->startaddr
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#define BLOCK_END(bl) (bl)->endaddr
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#define BLOCK_FUNCTION(bl) (bl)->function
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#define BLOCK_SUPERBLOCK(bl) (bl)->superblock
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#define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag
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#define BLOCK_NAMESPACE(bl) (bl)->language_specific.cplus_specific.namespace
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#define BLOCK_HASHTABLE(bl) (bl)->hashtable
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/* For blocks without a hashtable (BLOCK_HASHTABLE (bl) == 0) only. */
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#define BLOCK_NSYMS(bl) (bl)->nsyms
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#define BLOCK_SYM(bl, n) (bl)->sym[n]
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/* For blocks with a hashtable, but these are valid for non-hashed blocks as
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well - each symbol will appear to be one bucket by itself. */
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#define BLOCK_BUCKETS(bl) (bl)->nsyms
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#define BLOCK_BUCKET(bl, n) (bl)->sym[n]
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/* Macro used to set the size of a hashtable for N symbols. */
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#define BLOCK_HASHTABLE_SIZE(n) ((n)/5 + 1)
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/* Macro to loop through all symbols in a block BL, in no particular order.
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i counts which bucket we are in, and sym points to the current symbol. */
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#define ALL_BLOCK_SYMBOLS(bl, i, sym) \
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for ((i) = 0; (i) < BLOCK_BUCKETS ((bl)); (i)++) \
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for ((sym) = BLOCK_BUCKET ((bl), (i)); (sym); \
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(sym) = (sym)->hash_next)
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struct blockvector
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{
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/* Number of blocks in the list. */
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int nblocks;
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/* The blocks themselves. */
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struct block *block[1];
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};
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#define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks
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#define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n]
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/* Special block numbers */
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#define GLOBAL_BLOCK 0
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#define STATIC_BLOCK 1
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#define FIRST_LOCAL_BLOCK 2
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extern struct symbol *block_function (const struct block *);
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extern int contained_in (const struct block *, const struct block *);
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extern struct blockvector *blockvector_for_pc (CORE_ADDR, int *);
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extern struct blockvector *blockvector_for_pc_sect (CORE_ADDR, asection *,
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int *, struct symtab *);
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extern struct block *block_for_pc (CORE_ADDR);
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extern struct block *block_for_pc_sect (CORE_ADDR, asection *);
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extern const char *block_scope (const struct block *block);
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extern void block_set_scope (struct block *block, const char *scope,
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struct obstack *obstack);
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extern struct using_direct *block_using (const struct block *block);
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extern void block_set_using (struct block *block,
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struct using_direct *using,
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struct obstack *obstack);
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extern const struct block *block_static_block (const struct block *block);
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extern const struct block *block_global_block (const struct block *block);
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#endif /* BLOCK_H */
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