db_write_cmd.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*      $NetBSD: db_write_cmd.c,v 1.28 2019/02/03 03:19:26 mrg Exp $    */
    2 
    3 /*
    4  * Mach Operating System
    5  * Copyright (c) 1991,1990 Carnegie Mellon University
    6  * All Rights Reserved.
    7  *
    8  * Permission to use, copy, modify and distribute this software and its
    9  * documentation is hereby granted, provided that both the copyright
   10  * notice and this permission notice appear in all copies of the
   11  * software, derivative works or modified versions, and any portions
   12  * thereof, and that both notices appear in supporting documentation.
   13  *
   14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   16  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   17  *
   18  * Carnegie Mellon requests users of this software to return to
   19  *
   20  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   21  *  School of Computer Science
   22  *  Carnegie Mellon University
   23  *  Pittsburgh PA 15213-3890
   24  *
   25  * any improvements or extensions that they make and grant Carnegie the
   26  * rights to redistribute these changes.
   27  *
   28  *      Author: David B. Golub,  Carnegie Mellon University
   29  *      Date:   7/90
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __KERNEL_RCSID(0, "$NetBSD: db_write_cmd.c,v 1.28 2019/02/03 03:19:26 mrg Exp $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/proc.h>
   37 
   38 #include <ddb/ddb.h>
   39 
   40 /*
   41  * Write to file.
   42  */
   43 /*ARGSUSED*/
   44 void
   45 db_write_cmd(db_expr_t address, bool have_addr,
   46     db_expr_t count, const char *modif)
   47 {
   48         db_addr_t       addr;
   49         db_expr_t       old_value;
   50         db_expr_t       new_value;
   51         int             size;
   52         bool            wrote_one;
   53         bool            show_old_val;
   54 
   55         addr = (db_addr_t) address;
   56         wrote_one = false;
   57         show_old_val = islower((unsigned char)modif[0]);
   58 
   59         switch (tolower((unsigned char)modif[0])) {
   60         case 'b':
   61                 size = 1;
   62                 break;
   63         case 'h':
   64                 size = 2;
   65                 break;
   66         case 'l':
   67         case '\0':
   68                 size = 4;
   69                 break;
   70         case 'q':
   71                 if (sizeof(db_expr_t) != sizeof(uint64_t)) {
   72                         size = -1;
   73                         db_error("q not supported\n");
   74                         /*NOTREACHED*/
   75                 }
   76                 /* FALLTHROUGH */
   77         case 'L':
   78                 size = sizeof(db_expr_t);
   79                 break;
   80         default:
   81                 size = -1;
   82                 db_error("Unknown size\n");
   83                 /*NOTREACHED*/
   84         }
   85 
   86         while (db_expression(&new_value)) {
   87                 db_printsym(addr, DB_STGY_ANY, db_printf);
   88                 if (show_old_val) {
   89                         old_value = db_get_value(addr, size, false);
   90                         db_printf("\t\t%s = ", db_num_to_str(old_value));
   91                         db_printf("%s\n", db_num_to_str(new_value));
   92                 }
   93                 else
   94                         db_printf("\t\t= %s\n", db_num_to_str(new_value));
   95                 db_put_value(addr, size, new_value);
   96                 addr += size;
   97 
   98                 wrote_one = true;
   99         }
  100 
  101         if (!wrote_one) {
  102                 db_error("Nothing written.\n");
  103                 /*NOTREACHED*/
  104         }
  105 
  106         db_next = addr;
  107         db_prev = addr - size;
  108 
  109         db_skip_to_eol();
  110 }

Cache object: b9554d361d60fa4ca4ec5a4349990e09

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

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

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