diff options
Diffstat (limited to 'sys/ddb/db_sym.h')
| -rw-r--r-- | sys/ddb/db_sym.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/sys/ddb/db_sym.h b/sys/ddb/db_sym.h new file mode 100644 index 0000000..663f1cd --- /dev/null +++ b/sys/ddb/db_sym.h @@ -0,0 +1,114 @@ +/* + * Mach Operating System + * Copyright (c) 1991,1990 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ +/* + * HISTORY + * $Log: db_sym.h,v $ + * Revision 1.1 1992/03/25 21:45:29 pace + * Initial revision + * + * Revision 2.3 91/02/05 17:07:12 mrt + * Changed to new Mach copyright + * [91/01/31 16:19:27 mrt] + * + * Revision 2.2 90/08/27 21:52:39 dbg + * Changed type of db_sym_t to char * - it's a better type for an + * opaque pointer. + * [90/08/22 dbg] + * + * Created. + * [90/08/19 af] + * + */ +/* + * Author: Alessandro Forin, Carnegie Mellon University + * Date: 8/90 + */ + +/* + * This module can handle multiple symbol tables + */ +typedef struct { + char *name; /* symtab name */ + char *start; /* symtab location */ + char *end; + char *private; /* optional machdep pointer */ +} db_symtab_t; + +extern db_symtab_t *db_last_symtab; /* where last symbol was found */ + +/* + * Symbol representation is specific to the symtab style: + * BSD compilers use dbx' nlist, other compilers might use + * a different one + */ +typedef char * db_sym_t; /* opaque handle on symbols */ +#define DB_SYM_NULL ((db_sym_t)0) + +/* + * Non-stripped symbol tables will have duplicates, for instance + * the same string could match a parameter name, a local var, a + * global var, etc. + * We are most concern with the following matches. + */ +typedef int db_strategy_t; /* search strategy */ + +#define DB_STGY_ANY 0 /* anything goes */ +#define DB_STGY_XTRN 1 /* only external symbols */ +#define DB_STGY_PROC 2 /* only procedures */ + +extern boolean_t db_qualify_ambiguous_names; + /* if TRUE, check across symbol tables + * for multiple occurrences of a name. + * Might slow down quite a bit */ + +/* + * Functions exported by the symtable module + */ +extern void db_add_symbol_table(); + /* extend the list of symbol tables */ + +extern int db_value_of_name(/* char*, db_expr_t* */); + /* find symbol value given name */ + +extern db_sym_t db_search_symbol(/* db_expr_t, db_strategy_t, int* */); + /* find symbol given value */ + +extern void db_symbol_values(/* db_sym_t, char**, db_expr_t* */); + /* return name and value of symbol */ + +#define db_find_sym_and_offset(val,namep,offp) \ + db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0) + /* find name&value given approx val */ + +#define db_find_xtrn_sym_and_offset(val,namep,offp) \ + db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0) + /* ditto, but no locals */ + +extern int db_eqname(/* char*, char*, char */); + /* strcmp, modulo leading char */ + +extern void db_printsym(/* db_expr_t, db_strategy_t */); + /* print closest symbol to a value */ |
