Annotation of sys/ddb/db_write_cmd.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: db_write_cmd.c,v 1.8 2006/03/13 06:23:20 jsg Exp $ */
! 2: /* $NetBSD: db_write_cmd.c,v 1.6 1996/02/05 01:57:25 christos Exp $ */
! 3:
! 4: /*
! 5: * Mach Operating System
! 6: * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
! 7: * All Rights Reserved.
! 8: *
! 9: * Permission to use, copy, modify and distribute this software and its
! 10: * documentation is hereby granted, provided that both the copyright
! 11: * notice and this permission notice appear in all copies of the
! 12: * software, derivative works or modified versions, and any portions
! 13: * thereof, and that both notices appear in supporting documentation.
! 14: *
! 15: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 16: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
! 17: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 18: *
! 19: * Carnegie Mellon requests users of this software to return to
! 20: *
! 21: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 22: * School of Computer Science
! 23: * Carnegie Mellon University
! 24: * Pittsburgh PA 15213-3890
! 25: *
! 26: * any improvements or extensions that they make and grant Carnegie Mellon
! 27: * the rights to redistribute these changes.
! 28: *
! 29: * Author: David B. Golub, Carnegie Mellon University
! 30: * Date: 7/90
! 31: */
! 32:
! 33: #include <sys/param.h>
! 34: #include <sys/proc.h>
! 35:
! 36: #include <uvm/uvm_extern.h>
! 37:
! 38: #include <machine/db_machdep.h>
! 39:
! 40: #include <ddb/db_lex.h>
! 41: #include <ddb/db_access.h>
! 42: #include <ddb/db_command.h>
! 43: #include <ddb/db_sym.h>
! 44: #include <ddb/db_extern.h>
! 45: #include <ddb/db_output.h>
! 46:
! 47: /*
! 48: * Write to file.
! 49: */
! 50: /*ARGSUSED*/
! 51: void
! 52: db_write_cmd(db_expr_t address, boolean_t have_addr, db_expr_t count,
! 53: char *modif)
! 54: {
! 55: db_addr_t addr;
! 56: db_expr_t old_value;
! 57: db_expr_t new_value;
! 58: int size;
! 59: boolean_t wrote_one = FALSE;
! 60:
! 61: addr = (db_addr_t) address;
! 62:
! 63: switch (modif[0]) {
! 64: case 'b':
! 65: size = 1;
! 66: break;
! 67: case 'h':
! 68: size = 2;
! 69: break;
! 70: case 'l':
! 71: case '\0':
! 72: size = 4;
! 73: break;
! 74: default:
! 75: size = -1;
! 76: db_error("Unknown size\n");
! 77: /*NOTREACHED*/
! 78: }
! 79:
! 80: while (db_expression(&new_value)) {
! 81: old_value = db_get_value(addr, size, FALSE);
! 82: db_printsym(addr, DB_STGY_ANY, db_printf);
! 83: db_printf("\t\t%#8n\t=\t%#8n\n", old_value, new_value);
! 84: db_put_value(addr, size, new_value);
! 85: addr += size;
! 86:
! 87: wrote_one = TRUE;
! 88: }
! 89:
! 90: if (!wrote_one) {
! 91: db_error("Nothing written.\n");
! 92: /*NOTREACHED*/
! 93: }
! 94:
! 95: db_next = addr;
! 96: db_prev = addr - size;
! 97:
! 98: db_skip_to_eol();
! 99: }
! 100:
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