IABSD.fr/src/sys/ddb/db_sym.h

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• Author : mpi
  Date : 2019-11-07 13:16:25
  Hash : 08f058f8
  Message : db_addr_t -> vaddr_t ok deraadt@

• sys/ddb/db_sym.h

• /*	$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,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 */
  
  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_ */