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Commit	Line	Data
	1	/*
	2	* Mach Operating System
	3	* Copyright (c) 1991,1990 Carnegie Mellon University
	4	* All Rights Reserved.
	5	*
	6	* Permission to use, copy, modify and distribute this software and its
	7	* documentation is hereby granted, provided that both the copyright
	8	* notice and this permission notice appear in all copies of the
	9	* software, derivative works or modified versions, and any portions
	10	* thereof, and that both notices appear in supporting documentation.
	11	*
	12	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
	13	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	14	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	15	*
	16	* Carnegie Mellon requests users of this software to return to
	17	*
	18	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	19	* School of Computer Science
	20	* Carnegie Mellon University
	21	* Pittsburgh PA 15213-3890
	22	*
	23	* any improvements or extensions that they make and grant Carnegie the
	24	* rights to redistribute these changes.
	25	*
	26	* $FreeBSD: src/sys/ddb/db_kld.c,v 1.9 2000/01/11 13:25:12 peter Exp $
	27	* $DragonFly: src/sys/ddb/db_kld.c,v 1.3 2003/07/26 14:18:51 rob Exp $
	28	* from db_aout.c,v 1.20 1998/06/07 17:09:36 dfr Exp
	29	*/
	30
	31	/*
	32	* Author: David B. Golub, Carnegie Mellon University
	33	* Date: 7/90
	34	*/
	35	/*
	36	* Symbol table routines for kld maintained kernels.
	37	*/
	38
	39	#include <sys/param.h>
	40	#include <sys/systm.h>
	41	#include <sys/linker.h>
	42
	43	#include <ddb/ddb.h>
	44	#include <ddb/db_sym.h>
	45
	46	c_db_sym_t
	47	X_db_lookup(stab, symstr)
	48	db_symtab_t *stab;
	49	const char * symstr;
	50	{
	51	c_linker_sym_t sym;
	52
	53	if (linker_ddb_lookup(symstr, &sym) == 0)
	54	return (c_db_sym_t) sym;
	55	else
	56	return (c_db_sym_t) 0;
	57	}
	58
	59	c_db_sym_t
	60	X_db_search_symbol(symtab, off, strategy, diffp)
	61	db_symtab_t * symtab;
	62	db_addr_t off;
	63	db_strategy_t strategy;
	64	db_expr_t diffp; / in/out */
	65	{
	66	c_linker_sym_t sym;
	67	long diff;
	68
	69	if (linker_ddb_search_symbol((caddr_t) off, &sym, &diff) == 0) {
	70	*diffp = (db_expr_t) diff;
	71	return (c_db_sym_t) sym;
	72	}
	73
	74	return 0;
	75	}
	76
	77	/*
	78	* Return the name and value for a symbol.
	79	*/
	80	void
	81	X_db_symbol_values(symtab, dbsym, namep, valuep)
	82	db_symtab_t *symtab;
	83	c_db_sym_t dbsym;
	84	const char **namep;
	85	db_expr_t *valuep;
	86	{
	87	c_linker_sym_t sym = (c_linker_sym_t) dbsym;
	88	linker_symval_t symval;
	89
	90	linker_ddb_symbol_values(sym, &symval);
	91	if (namep)
	92	namep = (const char) symval.name;
	93	if (valuep)
	94	*valuep = (db_expr_t) symval.value;
	95	}
	96
	97
	98	boolean_t
	99	X_db_line_at_pc(symtab, cursym, filename, linenum, off)
	100	db_symtab_t * symtab;
	101	c_db_sym_t cursym;
	102	char **filename;
	103	int *linenum;
	104	db_expr_t off;
	105	{
	106	return FALSE;
	107	}
	108
	109	boolean_t
	110	X_db_sym_numargs(symtab, cursym, nargp, argnamep)
	111	db_symtab_t * symtab;
	112	c_db_sym_t cursym;
	113	int *nargp;
	114	char **argnamep;
	115	{
	116	return FALSE;
	117	}
	118
	119	/*
	120	* Initialization routine for a.out files.
	121	*/
	122	void
	123	kdb_init()
	124	{
	125	db_add_symbol_table(0, 0, "kernel", 0);
	126	}