1996-06-04 02:11:34 +04:00
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/* $NetBSD: kshell_disassem.c,v 1.3 1996/06/03 22:11:34 mark Exp $ */
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1996-02-01 02:14:53 +03:00
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/*
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* Copyright (c) 1994 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Brini.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* RiscBSD kernel project
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*
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* shell_disassem.c
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*
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* Debug / Monitor shell disassembler
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*
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* Created : 09/10/94
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*/
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/* Include standard header files */
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#include <sys/param.h>
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#include <sys/systm.h>
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1996-06-04 02:11:34 +04:00
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#include <dev/cons.h>
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1996-02-01 02:14:53 +03:00
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#include <machine/katelib.h>
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/* Declare external variables */
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/* Local function prototypes */
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u_int disassemble __P((u_char *));
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u_int do_disassemble __P((u_char *));
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1996-06-04 02:11:34 +04:00
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int readhex __P((char *buf));
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1996-02-01 02:14:53 +03:00
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/* Now for the main code */
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/* dis - disassembles memory */
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void
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shell_disassem(argc, argv)
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int argc;
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char *argv[];
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{
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u_char *addr;
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if (argc < 2) {
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printf("Syntax: dis <addr>\n\r");
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return;
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}
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/* Decode the one argument */
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addr = (u_char *)readhex(argv[1]);
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printf("Interactive disassembly\n\r");
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do_disassemble(addr);
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}
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u_int
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do_disassemble(addr)
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u_char *addr;
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{
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u_int result;
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int quit = 0;
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1996-06-04 02:11:34 +04:00
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int key = 0;
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1996-02-01 02:14:53 +03:00
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int count = 1;
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do {
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result = disassemble(addr);
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--count;
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if (count == 0) {
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count = 1;
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1996-03-07 02:52:15 +03:00
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key = cngetc();
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1996-02-01 02:14:53 +03:00
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switch (key) {
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case 'Q' :
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case 'q' :
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case 0x1b :
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case 0x03 :
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case 0x04 :
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case 0x10b :
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quit = 1;
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break;
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case 0x09 :
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case 'r' :
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case 'R' :
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case 0x103 :
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count = 16;
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addr += 4;
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break;
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case 0x102 :
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count = 16;
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addr -= 124;
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break;
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case 0x0d :
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case 0x101 :
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addr = addr + 4;
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break;
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case 'B' :
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case 'b' :
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case 0x100:
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addr = addr - 4;
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break;
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case '+' :
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case '=' :
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case 0x104 :
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addr = addr + 0x80;
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break;
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case '-' :
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case '_' :
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case 0x105 :
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addr = addr - 0x80;
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break;
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case ' ' :
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quit = do_disassemble((u_char *)result);
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break;
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case 'J' :
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case 'j' :
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addr = (u_char *)result;
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break;
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case '/' :
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case '?' :
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printf("\'\xe3\' - Backwards 1 word\n\r");
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printf("\'\xe4\' - Forwards 1 word\n\r");
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printf("\'\xe5\' - Backwords 16 words\n\r");
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printf("\'\xe6\' - Forwards 16 words\n\r");
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printf("\'Q\' - Quit\n\r");
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printf("\'B\' - Back a word\n\r");
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printf("\'R\' - Disassemble 16 words\n\r");
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printf("\'J\' - Jump to address\n\r");
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printf("\' \' - Branch to address\n\r");
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printf("<BS> - Return from branch\n\r");
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printf("\'-\' - Skip backwards 128 words\n\r");
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printf("\'+\' - Skip forwards 128 words\n\r");
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break;
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}
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} else {
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addr += 4;
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}
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} while (!quit && key != 0x08);
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return(quit);
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}
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/* End of shell_disassem.c */
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