The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_print.c

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    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  */
   27 /*
   28  *      Author: David B. Golub, Carnegie Mellon University
   29  *      Date:   7/90
   30  */
   31 
   32 /*
   33  * Miscellaneous printing.
   34  */
   35 
   36 #include <sys/cdefs.h>
   37 __FBSDID("$FreeBSD$");
   38 
   39 #include <sys/param.h>
   40 #include <sys/kdb.h>
   41 #include <sys/proc.h>
   42 
   43 #include <machine/pcb.h>
   44 
   45 #include <ddb/ddb.h>
   46 #include <ddb/db_variables.h>
   47 #include <ddb/db_sym.h>
   48 
   49 void
   50 db_show_regs(db_expr_t _1, boolean_t _2, db_expr_t _3, char *_4)
   51 {
   52         struct db_variable *regp;
   53         db_expr_t value, offset;
   54         const char *name;
   55 
   56         for (regp = db_regs; regp < db_eregs; regp++) {
   57                 if (!db_read_variable(regp, &value))
   58                         continue;
   59                 db_printf("%-12s%#10lr", regp->name, (unsigned long)value);
   60                 db_find_xtrn_sym_and_offset((db_addr_t)value, &name, &offset);
   61                 if (name != NULL && offset <= (unsigned long)db_maxoff &&
   62                     offset != value) {
   63                         db_printf("\t%s", name);
   64                         if (offset != 0)
   65                                 db_printf("+%+#lr", (long)offset);
   66                 }
   67                 db_printf("\n");
   68         }
   69         db_print_loc_and_inst(PC_REGS());
   70 }

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