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/* $NetBSD: db_sym.h,v 1.13 2000/05/25 19:57:36 jhawk Exp $ */
/*
* Mach Operating System
* Copyright (c) 1993,1992,1991,1990 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 "AS IS"
* 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 Mellon
* the rights to redistribute these changes.
*
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 8/90
*/
#ifndef _DDB_DB_SYM_H_
#define _DDB_DB_SYM_H_
#include <sys/stdint.h>
#include <sys/exec_elf.h>
/*
* 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 */
/*
* Internal db_forall function calling convention:
*
* (*db_forall_func)(stab, sym, name, suffix, prefix, arg);
*
* stab is the symbol table, symbol the (opaque) symbol pointer,
* name the name of the symbol, suffix a string representing
* the type, prefix an initial ignorable function prefix (e.g. "_"
* in a.out), and arg an opaque argument to be passed in.
*/
typedef void (db_forall_func_t)(Elf_Sym *, char *, char *, int, void *);
extern unsigned int db_maxoff; /* like gdb's "max-symbolic-offset" */
int db_eqname(char *, char *, int);
/* strcmp, modulo leading char */
Elf_Sym * db_symbol_by_name(char *, db_expr_t *);
/* find symbol value given name */
Elf_Sym * db_search_symbol(vaddr_t, db_strategy_t, db_expr_t *);
/* find symbol given value */
void db_symbol_values(Elf_Sym *, 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,NULL)
/* 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,NULL)
/* ditto, but no locals */
void db_printsym(db_expr_t, db_strategy_t, int (*)(const char *, ...));
/* print closest symbol to a value */
int db_elf_sym_init(int, void *, void *, const char *);
Elf_Sym * db_elf_sym_search(vaddr_t, db_strategy_t, db_expr_t *);
int db_elf_line_at_pc(Elf_Sym *, char **, int *, db_expr_t);
void db_elf_sym_forall(db_forall_func_t db_forall_func, void *);
bool db_dwarf_line_at_pc(const char *, size_t, uintptr_t,
const char **, const char **, int *);
int db_ctf_func_numargs(Elf_Sym *);
#endif /* _DDB_DB_SYM_H_ */
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