f0112afdb9
symbols so its not too useful. Changes to the kernel linker to allow it to supply DDB with symbols will come later.
138 lines
2.8 KiB
C
138 lines
2.8 KiB
C
/*
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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
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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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* $Id$
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* from db_aout.c,v 1.20 1998/06/07 17:09:36 dfr Exp
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*/
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/*
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* Author: David B. Golub, Carnegie Mellon University
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* Date: 7/90
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*/
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/*
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* Symbol table routines for a.out format files.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/linker.h>
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#include <machine/bootinfo.h>
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#include <ddb/ddb.h>
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#include <ddb/db_sym.h>
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extern linker_file_t linker_kernel_file;
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#define KF linker_kernel_file
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db_sym_t
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X_db_lookup(stab, symstr)
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db_symtab_t *stab;
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char * symstr;
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{
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linker_sym_t sym;
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if (!KF)
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return 0;
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if (KF->ops->lookup_symbol(KF, symstr, &sym) == 0)
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return (db_sym_t) sym;
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else
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return (db_sym_t) 0;
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}
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db_sym_t
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X_db_search_symbol(symtab, off, strategy, diffp)
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db_symtab_t * symtab;
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register
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db_addr_t off;
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db_strategy_t strategy;
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db_expr_t *diffp; /* in/out */
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{
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linker_sym_t sym;
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long diff;
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if (!KF)
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return 0;
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if (KF->ops->search_symbol(KF, (caddr_t) off, &sym, &diff) == 0) {
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*diffp = (db_expr_t) diff;
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return (db_sym_t) sym;
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}
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return 0;
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}
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/*
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* Return the name and value for a symbol.
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*/
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void
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X_db_symbol_values(dbsym, namep, valuep)
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db_sym_t dbsym;
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char **namep;
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db_expr_t *valuep;
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{
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linker_sym_t sym = (linker_sym_t) dbsym;
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linker_symval_t symval;
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KF->ops->symbol_values(KF, sym, &symval);
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if (namep)
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*namep = (char*) symval.name;
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if (valuep)
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*valuep = (db_expr_t) symval.value;
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}
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boolean_t
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X_db_line_at_pc(symtab, cursym, filename, linenum, off)
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db_symtab_t * symtab;
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db_sym_t cursym;
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char **filename;
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int *linenum;
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db_expr_t off;
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{
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return FALSE;
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}
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boolean_t
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X_db_sym_numargs(symtab, cursym, nargp, argnamep)
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db_symtab_t * symtab;
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db_sym_t cursym;
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int *nargp;
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char **argnamep;
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{
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return FALSE;
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}
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/*
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* Initialization routine for a.out files.
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*/
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void
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kdb_init()
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{
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db_add_symbol_table(0, 0, "kernel", 0);
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}
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