153 lines
5.0 KiB
C
153 lines
5.0 KiB
C
/* $NetBSD: db_sym.h,v 1.14 2001/01/17 19:50:04 jdolecek Exp $ */
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/*
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* Mach Operating System
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* Copyright (c) 1991,1990 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*
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* Author: Alessandro Forin, Carnegie Mellon University
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* Date: 8/90
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*/
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/*
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* This module can handle multiple symbol tables
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*/
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typedef struct {
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const char *name; /* symtab name */
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char *start; /* symtab location */
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char *end;
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char *private; /* optional machdep pointer */
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} db_symtab_t;
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extern db_symtab_t *db_last_symtab; /* where last symbol was found */
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/*
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* Symbol representation is specific to the symtab style:
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* BSD compilers use dbx' nlist, other compilers might use
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* a different one
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*/
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typedef char * db_sym_t; /* opaque handle on symbols */
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#define DB_SYM_NULL ((db_sym_t)0)
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/*
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* Non-stripped symbol tables will have duplicates, for instance
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* the same string could match a parameter name, a local var, a
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* global var, etc.
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* We are most concern with the following matches.
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*/
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typedef int db_strategy_t; /* search strategy */
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#define DB_STGY_ANY 0 /* anything goes */
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#define DB_STGY_XTRN 1 /* only external symbols */
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#define DB_STGY_PROC 2 /* only procedures */
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/*
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* Internal db_forall function calling convention:
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*
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* (*db_forall_func)(stab, sym, name, suffix, prefix, arg);
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*
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* stab is the symbol table, symbol the (opaque) symbol pointer,
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* name the name of the symbol, suffix a string representing
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* the type, prefix an initial ignorable function prefix (e.g. "_"
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* in a.out), and arg an opaque argument to be passed in.
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*/
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typedef void (db_forall_func_t)
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__P((db_symtab_t *, db_sym_t, char *, char *, int, void *));
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/*
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* A symbol table may be in one of many formats. All symbol tables
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* must be of the same format as the master kernel symbol table.
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*/
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typedef struct {
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const char *sym_format;
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boolean_t (*sym_init) __P((int, void *, void *, const char *));
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db_sym_t (*sym_lookup) __P((db_symtab_t *, char *));
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db_sym_t (*sym_search) __P((db_symtab_t *, db_addr_t, db_strategy_t,
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db_expr_t *));
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void (*sym_value) __P((db_symtab_t *, db_sym_t, char **,
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db_expr_t *));
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boolean_t (*sym_line_at_pc) __P((db_symtab_t *, db_sym_t,
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char **, int *, db_expr_t));
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boolean_t (*sym_numargs) __P((db_symtab_t *, db_sym_t, int *,
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char **));
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void (*sym_forall) __P((db_symtab_t *,
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db_forall_func_t *db_forall_func, void *));
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} db_symformat_t;
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extern boolean_t db_qualify_ambiguous_names;
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/* if TRUE, check across symbol tables
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* for multiple occurrences of a name.
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* Might slow down quite a bit */
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extern unsigned int db_maxoff; /* like gdb's "max-symbolic-offset" */
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/*
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* Functions exported by the symtable module
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*/
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int db_add_symbol_table __P((char *, char *, const char *, char *));
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/* extend the list of symbol tables */
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void db_del_symbol_table __P((char *));
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/* remove a symbol table from list */
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boolean_t db_eqname __P((char *, char *, int));
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/* strcmp, modulo leading char */
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int db_value_of_name __P((char *, db_expr_t *));
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/* find symbol value given name */
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db_sym_t db_lookup __P((char *));
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void db_sifting __P((char *, int));
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/* print partially matching symbol names */
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boolean_t db_symbol_is_ambiguous __P((db_sym_t));
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db_sym_t db_search_symbol __P((db_addr_t, db_strategy_t, db_expr_t *));
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/* find symbol given value */
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void db_symbol_values __P((db_sym_t, char **, db_expr_t *));
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/* return name and value of symbol */
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#define db_find_sym_and_offset(val,namep,offp) \
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db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0)
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/* find name&value given approx val */
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#define db_find_xtrn_sym_and_offset(val,namep,offp) \
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db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0)
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/* ditto, but no locals */
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void db_printsym __P((db_expr_t, db_strategy_t, void(*)(const char *, ...)));
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/* print closest symbol to a value */
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boolean_t db_line_at_pc __P((db_sym_t, char **, int *, db_expr_t));
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int db_sym_numargs __P((db_sym_t, int *, char **));
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#ifdef DB_AOUT_SYMBOLS
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extern const db_symformat_t db_symformat_aout;
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#endif
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#ifdef DB_ELF_SYMBOLS
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extern const db_symformat_t db_symformat_elf;
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#endif
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