projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| c1cfdb7a WJ |
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 | * HISTORY | |
| 28 | * $Log: db_write_cmd.c,v $ | |
| 29 | * Revision 1.1 1992/03/25 21:45:42 pace | |
| 30 | * Initial revision | |
| 31 | * | |
| 32 | * Revision 2.4 91/02/05 17:07:35 mrt | |
| 33 | * Changed to new Mach copyright | |
| 34 | * [91/01/31 16:20:19 mrt] | |
| 35 | * | |
| 36 | * Revision 2.3 90/10/25 14:44:26 rwd | |
| 37 | * Changed db_write_cmd to print unsigned. | |
| 38 | * [90/10/19 rpd] | |
| 39 | * | |
| 40 | * Revision 2.2 90/08/27 21:53:54 dbg | |
| 41 | * Set db_prev and db_next instead of explicitly advancing dot. | |
| 42 | * [90/08/22 dbg] | |
| 43 | * Reflected changes in db_printsym()'s calling seq. | |
| 44 | * [90/08/20 af] | |
| 45 | * Warn user if nothing was written. | |
| 46 | * [90/08/07 dbg] | |
| 47 | * Created. | |
| 48 | * [90/07/25 dbg] | |
| 49 | * | |
| 50 | */ | |
| 51 | /* | |
| 52 | * Author: David B. Golub, Carnegie Mellon University | |
| 53 | * Date: 7/90 | |
| 54 | */ | |
| 55 | ||
| 56 | #include "param.h" | |
| 57 | #include "proc.h" | |
| 58 | #include <machine/db_machdep.h> | |
| 59 | ||
| 60 | #include <ddb/db_lex.h> | |
| 61 | #include <ddb/db_access.h> | |
| 62 | #include <ddb/db_command.h> | |
| 63 | #include <ddb/db_sym.h> | |
| 64 | ||
| 65 | /* | |
| 66 | * Write to file. | |
| 67 | */ | |
| 68 | /*ARGSUSED*/ | |
| 69 | void | |
| 70 | db_write_cmd(address, have_addr, count, modif) | |
| 71 | db_expr_t address; | |
| 72 | boolean_t have_addr; | |
| 73 | db_expr_t count; | |
| 74 | char * modif; | |
| 75 | { | |
| 76 | register | |
| 77 | db_addr_t addr; | |
| 78 | register | |
| 79 | db_expr_t old_value; | |
| 80 | db_expr_t new_value; | |
| 81 | register int size; | |
| 82 | boolean_t wrote_one = FALSE; | |
| 83 | ||
| 84 | addr = (db_addr_t) address; | |
| 85 | ||
| 86 | switch (modif[0]) { | |
| 87 | case 'b': | |
| 88 | size = 1; | |
| 89 | break; | |
| 90 | case 'h': | |
| 91 | size = 2; | |
| 92 | break; | |
| 93 | case 'l': | |
| 94 | case '\0': | |
| 95 | size = 4; | |
| 96 | break; | |
| 97 | default: | |
| 98 | db_error("Unknown size\n"); | |
| 99 | return; | |
| 100 | } | |
| 101 | ||
| 102 | while (db_expression(&new_value)) { | |
| 103 | old_value = db_get_value(addr, size, FALSE); | |
| 104 | db_printsym(addr, DB_STGY_ANY); | |
| 105 | db_printf("\t\t%#8n\t=\t%#8n\n", old_value, new_value); | |
| 106 | db_put_value(addr, size, new_value); | |
| 107 | addr += size; | |
| 108 | ||
| 109 | wrote_one = TRUE; | |
| 110 | } | |
| 111 | ||
| 112 | if (!wrote_one) | |
| 113 | db_error("Nothing written.\n"); | |
| 114 | ||
| 115 | db_next = addr; | |
| 116 | db_prev = addr - size; | |
| 117 | ||
| 118 | db_skip_to_eol(); | |
| 119 | } | |
| 120 |