887fa28cea
get to all the symbol tables for all modules, not just the core kernel symbol table. Yes, DDB can see KLD module symbols with this, both by lookup and in tracebacks. No more references to _end from tracebacks within an LKM. :-)
132 lines
2.8 KiB
C
132 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: db_kld.c,v 1.2 1998/07/05 10:11:20 dfr Exp $
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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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#if defined(__ELF__) && !defined(__alpha__)
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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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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 (linker_ddb_lookup(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 (linker_ddb_search_symbol((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(symtab, dbsym, namep, valuep)
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db_symtab_t *symtab;
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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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linker_ddb_symbol_values(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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#endif
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