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      1  1.28       mrg /*	$NetBSD: db_write_cmd.c,v 1.28 2019/02/03 03:19:26 mrg Exp $	*/
      2   1.4       cgd 
      3  1.16    simonb /*
      4   1.1       cgd  * Mach Operating System
      5   1.1       cgd  * Copyright (c) 1991,1990 Carnegie Mellon University
      6   1.1       cgd  * All Rights Reserved.
      7  1.16    simonb  *
      8   1.1       cgd  * Permission to use, copy, modify and distribute this software and its
      9   1.1       cgd  * documentation is hereby granted, provided that both the copyright
     10   1.1       cgd  * notice and this permission notice appear in all copies of the
     11   1.1       cgd  * software, derivative works or modified versions, and any portions
     12   1.1       cgd  * thereof, and that both notices appear in supporting documentation.
     13  1.16    simonb  *
     14  1.11        pk  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     15   1.1       cgd  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     16   1.1       cgd  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     17  1.16    simonb  *
     18   1.1       cgd  * Carnegie Mellon requests users of this software to return to
     19  1.16    simonb  *
     20   1.1       cgd  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     21   1.1       cgd  *  School of Computer Science
     22   1.1       cgd  *  Carnegie Mellon University
     23   1.1       cgd  *  Pittsburgh PA 15213-3890
     24  1.16    simonb  *
     25   1.1       cgd  * any improvements or extensions that they make and grant Carnegie the
     26   1.1       cgd  * rights to redistribute these changes.
     27   1.1       cgd  *
     28   1.1       cgd  *	Author: David B. Golub,  Carnegie Mellon University
     29   1.1       cgd  *	Date:	7/90
     30   1.1       cgd  */
     31  1.15     lukem 
     32  1.15     lukem #include <sys/cdefs.h>
     33  1.28       mrg __KERNEL_RCSID(0, "$NetBSD: db_write_cmd.c,v 1.28 2019/02/03 03:19:26 mrg Exp $");
     34   1.1       cgd 
     35   1.3   mycroft #include <sys/param.h>
     36   1.3   mycroft #include <sys/proc.h>
     37   1.3   mycroft 
     38  1.23        ad #include <ddb/ddb.h>
     39   1.1       cgd 
     40   1.1       cgd /*
     41   1.1       cgd  * Write to file.
     42   1.1       cgd  */
     43   1.1       cgd /*ARGSUSED*/
     44   1.1       cgd void
     45  1.21   thorpej db_write_cmd(db_expr_t address, bool have_addr,
     46  1.20  christos     db_expr_t count, const char *modif)
     47   1.1       cgd {
     48   1.1       cgd 	db_addr_t	addr;
     49   1.1       cgd 	db_expr_t	old_value;
     50   1.1       cgd 	db_expr_t	new_value;
     51  1.12  augustss 	int		size;
     52  1.24       phx 	bool		wrote_one;
     53  1.24       phx 	bool		show_old_val;
     54   1.1       cgd 
     55   1.1       cgd 	addr = (db_addr_t) address;
     56  1.24       phx 	wrote_one = false;
     57  1.24       phx 	show_old_val = islower((unsigned char)modif[0]);
     58   1.1       cgd 
     59  1.24       phx 	switch (tolower((unsigned char)modif[0])) {
     60  1.16    simonb 	case 'b':
     61   1.1       cgd 		size = 1;
     62   1.1       cgd 		break;
     63  1.16    simonb 	case 'h':
     64   1.1       cgd 		size = 2;
     65   1.1       cgd 		break;
     66  1.16    simonb 	case 'l':
     67  1.16    simonb 	case '\0':
     68   1.1       cgd 		size = 4;
     69   1.1       cgd 		break;
     70  1.27      matt 	case 'q':
     71  1.27      matt 		if (sizeof(db_expr_t) != sizeof(uint64_t)) {
     72  1.27      matt 			size = -1;
     73  1.27      matt 			db_error("q not supported\n");
     74  1.27      matt 			/*NOTREACHED*/
     75  1.27      matt 		}
     76  1.28       mrg 		/* FALLTHROUGH */
     77  1.27      matt 	case 'L':
     78  1.27      matt 		size = sizeof(db_expr_t);
     79  1.27      matt 		break;
     80  1.16    simonb 	default:
     81   1.6  christos 		size = -1;
     82   1.1       cgd 		db_error("Unknown size\n");
     83   1.5   mycroft 		/*NOTREACHED*/
     84   1.1       cgd 	}
     85   1.1       cgd 
     86   1.1       cgd 	while (db_expression(&new_value)) {
     87  1.16    simonb 		db_printsym(addr, DB_STGY_ANY, db_printf);
     88  1.24       phx 		if (show_old_val) {
     89  1.24       phx 			old_value = db_get_value(addr, size, false);
     90  1.24       phx 			db_printf("\t\t%s = ", db_num_to_str(old_value));
     91  1.24       phx 			db_printf("%s\n", db_num_to_str(new_value));
     92  1.24       phx 		}
     93  1.24       phx 		else
     94  1.24       phx 			db_printf("\t\t= %s\n", db_num_to_str(new_value));
     95  1.16    simonb 		db_put_value(addr, size, new_value);
     96  1.16    simonb 		addr += size;
     97   1.1       cgd 
     98  1.22   thorpej 		wrote_one = true;
     99   1.1       cgd 	}
    100   1.1       cgd 
    101   1.5   mycroft 	if (!wrote_one) {
    102  1.16    simonb 		db_error("Nothing written.\n");
    103  1.16    simonb 		/*NOTREACHED*/
    104   1.5   mycroft 	}
    105   1.1       cgd 
    106   1.1       cgd 	db_next = addr;
    107   1.1       cgd 	db_prev = addr - size;
    108   1.1       cgd 
    109   1.1       cgd 	db_skip_to_eol();
    110   1.1       cgd }
    111