111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/* $NetBSD: db_write_cmd.c,v 1.28 2019/02/03 03:19:26 mrg 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: db_write_cmd.c,v 1.28 2019/02/03 03:19:26 mrg Exp $");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <ddb/ddb.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(db_expr_t address, bool have_addr,
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db_expr_t count, const 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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bool wrote_one;
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bool show_old_val;
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addr = (db_addr_t) address;
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wrote_one = false;
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show_old_val = islower((unsigned char)modif[0]);
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switch (tolower((unsigned char)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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case 'q':
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if (sizeof(db_expr_t) != sizeof(uint64_t)) {
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size = -1;
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db_error("q not supported\n");
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/*NOTREACHED*/
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}
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/* FALLTHROUGH */
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case 'L':
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size = sizeof(db_expr_t);
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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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db_printsym(addr, DB_STGY_ANY, db_printf);
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if (show_old_val) {
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old_value = db_get_value(addr, size, false);
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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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}
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else
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db_printf("\t\t= %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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