b756e7384d
important as db_sym() can be called through printf() rather than db_printf(), causing a trap as the standard %n usage is invoked. The DDB-specific %n code should disappear from subr_prf.c soon...
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/* $NetBSD: db_write_cmd.c,v 1.14 2000/06/06 05:06:26 jhawk Exp $ */
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/*
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* Mach Operating System
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* Copyright (c) 1991,1990 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*
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* Author: David B. Golub, Carnegie Mellon University
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* Date: 7/90
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*/
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <machine/db_machdep.h>
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#include <ddb/db_lex.h>
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#include <ddb/db_access.h>
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#include <ddb/db_command.h>
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#include <ddb/db_sym.h>
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#include <ddb/db_extern.h>
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#include <ddb/db_output.h>
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/*
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* Write to file.
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*/
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/*ARGSUSED*/
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void
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db_write_cmd(address, have_addr, count, modif)
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db_expr_t address;
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boolean_t have_addr;
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db_expr_t count;
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char * modif;
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{
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db_addr_t addr;
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db_expr_t old_value;
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db_expr_t new_value;
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int size;
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boolean_t wrote_one = FALSE;
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addr = (db_addr_t) address;
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switch (modif[0]) {
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case 'b':
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size = 1;
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break;
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case 'h':
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size = 2;
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break;
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case 'l':
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case '\0':
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size = 4;
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break;
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default:
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size = -1;
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db_error("Unknown size\n");
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/*NOTREACHED*/
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}
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while (db_expression(&new_value)) {
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old_value = db_get_value(addr, size, FALSE);
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db_printsym(addr, DB_STGY_ANY, db_printf);
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db_printf("\t\t%s = ", db_num_to_str(old_value));
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db_printf("%s\n", db_num_to_str(new_value));
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db_put_value(addr, size, new_value);
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addr += size;
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wrote_one = TRUE;
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}
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if (!wrote_one) {
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db_error("Nothing written.\n");
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/*NOTREACHED*/
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}
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db_next = addr;
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db_prev = addr - size;
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db_skip_to_eol();
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}
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