diff options
Diffstat (limited to 'gdb/symtab.h')
| -rw-r--r-- | gdb/symtab.h | 157 |
1 files changed, 3 insertions, 154 deletions
diff --git a/gdb/symtab.h b/gdb/symtab.h index 42a144b..2b5a17b 100644 --- a/gdb/symtab.h +++ b/gdb/symtab.h @@ -25,8 +25,11 @@ #define SYMTAB_H 1 /* Opaque declarations. */ + struct obstack; struct objfile; +struct block; +struct blockvector; /* Don't do this; it means that if some .o's are compiled with GNU C and some are not (easy to do accidentally the way we configure @@ -287,148 +290,7 @@ struct minimal_symbol #define MSYMBOL_INFO(msymbol) (msymbol)->info #define MSYMBOL_TYPE(msymbol) (msymbol)->type - - - -/* 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 blockvector -{ - /* Number of blocks in the list. */ - int nblocks; - /* The blocks themselves. */ - struct block *block[1]; -}; - -#define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks -#define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n] - -/* Special block numbers */ - -#define GLOBAL_BLOCK 0 -#define STATIC_BLOCK 1 -#define FIRST_LOCAL_BLOCK 2 - -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; 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; - - /* Version of GCC used to compile the function corresponding - to this block, or 0 if not compiled with GCC. When possible, - GCC should be compatible with the native compiler, or if that - is not feasible, the differences should be fixed during symbol - reading. As of 16 Apr 93, this flag is never used to distinguish - between gcc2 and the native compiler. - If there is no function corresponding to this block, this meaning - of this flag is undefined. */ - - unsigned char gcc_compile_flag; - - /* The symbols for this block are either in a simple linear list or - in a simple hashtable. Blocks which correspond to a function - (which have a list of symbols corresponding to arguments) use - a linear list, as do some older symbol readers (currently only - mdebugread and dstread). Other blocks are hashed. - - The hashtable uses the same hash function as the minsym hashtables, - found in minsyms.c:minsym_hash_iw. Symbols are hashed based on - their demangled name if appropriate, and on their name otherwise. - The hash function ignores space, and stops at the beginning of the - argument list if any. - - The table is laid out in NSYMS/5 buckets and symbols are chained via - their hash_next field. */ - - /* If this is really a hashtable of the symbols, this flag is 1. */ - - unsigned char hashtable; - - /* Number of local symbols. */ - - int nsyms; - - /* The symbols. If some of them are arguments, then they must be - in the order in which we would like to print them. */ - - struct symbol *sym[1]; -}; - -#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_GCC_COMPILED(bl) (bl)->gcc_compile_flag -#define BLOCK_HASHTABLE(bl) (bl)->hashtable - -/* For blocks without a hashtable (BLOCK_HASHTABLE (bl) == 0) only. */ -#define BLOCK_NSYMS(bl) (bl)->nsyms -#define BLOCK_SYM(bl, n) (bl)->sym[n] - -/* For blocks with a hashtable, but these are valid for non-hashed blocks as - well - each symbol will appear to be one bucket by itself. */ -#define BLOCK_BUCKETS(bl) (bl)->nsyms -#define BLOCK_BUCKET(bl, n) (bl)->sym[n] - -/* Macro used to set the size of a hashtable for N symbols. */ -#define BLOCK_HASHTABLE_SIZE(n) ((n)/5 + 1) - -/* Macro to loop through all symbols in a block BL, in no particular order. - i counts which bucket we are in, and sym points to the current symbol. */ - -#define ALL_BLOCK_SYMBOLS(bl, i, sym) \ - for ((i) = 0; (i) < BLOCK_BUCKETS ((bl)); (i)++) \ - for ((sym) = BLOCK_BUCKET ((bl), (i)); (sym); \ - (sym) = (sym)->hash_next) - -/* Nonzero if symbols of block BL should be sorted alphabetically. - Don't sort a block which corresponds to a function. If we did the - sorting would have to preserve the order of the symbols for the - arguments. Also don't sort any block that we chose to hash. */ - -#define BLOCK_SHOULD_SORT(bl) (! BLOCK_HASHTABLE (bl) \ - && BLOCK_FUNCTION (bl) == NULL) /* Represent one symbol name; a variable, constant, function or typedef. */ @@ -1054,10 +916,6 @@ extern struct type *lookup_union (char *, struct block *); extern struct type *lookup_enum (char *, struct block *); -/* lookup the function corresponding to the block */ - -extern struct symbol *block_function (struct block *); - /* from blockframe.c: */ /* lookup the function symbol corresponding to the address */ @@ -1112,8 +970,6 @@ extern struct partial_symbol *find_pc_sect_psymbol (struct partial_symtab *, extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *); -extern int contained_in (struct block *, struct block *); - extern void reread_symbols (void); extern struct type *lookup_transparent_type (const char *); @@ -1317,13 +1173,6 @@ extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *); extern struct symtab_and_line find_function_start_sal (struct symbol *sym, int); -/* blockframe.c */ - -extern struct blockvector *blockvector_for_pc (CORE_ADDR, int *); - -extern struct blockvector *blockvector_for_pc_sect (CORE_ADDR, asection *, - int *, struct symtab *); - /* symfile.c */ extern void clear_symtab_users (void); |