/*
 * 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.
 *
 * $FreeBSD: src/sys/ddb/db_kld.c,v 1.9 2000/01/11 13:25:12 peter Exp $
 *      from db_aout.c,v 1.20 1998/06/07 17:09:36 dfr Exp
 */

/*
 *      Author: David B. Golub, Carnegie Mellon University
 *      Date:   7/90
 */
/*
 * Symbol table routines for kld maintained kernels.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/linker.h>

#include <ddb/ddb.h>
#include <ddb/db_sym.h>

#if defined(__x86_64__)
vm_offset_t    ksym_start, ksym_end;
#endif

c_db_sym_t
X_db_lookup(db_symtab_t *stab, const char *symstr)
{
        c_linker_sym_t sym;

        if (linker_ddb_lookup(symstr, &sym) == 0)
            return (c_db_sym_t) sym;
        else
            return (c_db_sym_t) 0;
}

/*
 * Parameters:
 *     diffp:   in/out
 */
c_db_sym_t
X_db_search_symbol(db_symtab_t *symtab, db_addr_t off, db_strategy_t strategy,
                   db_expr_t *diffp)
{
        c_linker_sym_t sym;
        long diff;

        if (linker_ddb_search_symbol((caddr_t) off, &sym, &diff) == 0) {
                *diffp = (db_expr_t) diff;
                return (c_db_sym_t) sym;
        }

        return 0;
}

/*
 * Return the name and value for a symbol.
 */
void
X_db_symbol_values(db_symtab_t *symtab, c_db_sym_t dbsym, const char **namep,
                   db_expr_t *valuep)
{
        c_linker_sym_t sym = (c_linker_sym_t) dbsym;
        linker_symval_t symval;

        symval.name = NULL;
        symval.value = NULL;
        linker_ddb_symbol_values(sym, &symval);
        if (namep)
            *namep = (const char*) symval.name;
        if (valuep)
            *valuep = (db_expr_t) symval.value;
}


boolean_t
X_db_line_at_pc(db_symtab_t *symtab, c_db_sym_t cursym, char **filename,
                int *linenum, db_expr_t off)
{
        return FALSE;
}

boolean_t
X_db_sym_numargs(db_symtab_t *symtab, c_db_sym_t cursym, int *nargp,
                 char **argnamep)
{
        return FALSE;
}

/*
 * Initialization routine for a.out files.
 */
void
kdb_init(void)
{
        db_add_symbol_table(0, 0, "kernel", 0);
}