| 1 | /* $NetBSD: db_write_cmd.c,v 1.27 2015/06/06 22:06:05 matt 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 1.27 2015/06/06 22:06:05 matt 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 | case 'L': |
| 77 | size = sizeof(db_expr_t); |
| 78 | break; |
| 79 | default: |
| 80 | size = -1; |
| 81 | db_error("Unknown size\n" ); |
| 82 | /*NOTREACHED*/ |
| 83 | } |
| 84 | |
| 85 | while (db_expression(&new_value)) { |
| 86 | db_printsym(addr, DB_STGY_ANY, db_printf); |
| 87 | if (show_old_val) { |
| 88 | old_value = db_get_value(addr, size, false); |
| 89 | db_printf("\t\t%s = " , db_num_to_str(old_value)); |
| 90 | db_printf("%s\n" , db_num_to_str(new_value)); |
| 91 | } |
| 92 | else |
| 93 | db_printf("\t\t= %s\n" , db_num_to_str(new_value)); |
| 94 | db_put_value(addr, size, new_value); |
| 95 | addr += size; |
| 96 | |
| 97 | wrote_one = true; |
| 98 | } |
| 99 | |
| 100 | if (!wrote_one) { |
| 101 | db_error("Nothing written.\n" ); |
| 102 | /*NOTREACHED*/ |
| 103 | } |
| 104 | |
| 105 | db_next = addr; |
| 106 | db_prev = addr - size; |
| 107 | |
| 108 | db_skip_to_eol(); |
| 109 | } |
| 110 | |