/* $NetBSD: shell_disassem.c,v 1.2 1996/03/06 23:52:15 mark Exp $ */ /* * Copyright (c) 1994 Mark Brinicombe. * Copyright (c) 1994 Brini. * All rights reserved. * * This code is derived from software written for Brini by Mark Brinicombe * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Brini. * 4. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * RiscBSD kernel project * * shell_disassem.c * * Debug / Monitor shell disassembler * * Created : 09/10/94 */ /* Include standard header files */ #include #include /* Local header files */ #include /* Declare external variables */ /* Local function prototypes */ u_int disassemble __P((u_char *)); u_int do_disassemble __P((u_char *)); /* Now for the main code */ /* dis - disassembles memory */ void shell_disassem(argc, argv) int argc; char *argv[]; { u_char *addr; if (argc < 2) { printf("Syntax: dis \n\r"); return; } /* Decode the one argument */ addr = (u_char *)readhex(argv[1]); printf("Interactive disassembly\n\r"); do_disassemble(addr); } u_int do_disassemble(addr) u_char *addr; { u_int result; int quit = 0; int key; int count = 1; do { result = disassemble(addr); --count; if (count == 0) { count = 1; key = cngetc(); switch (key) { case 'Q' : case 'q' : case 0x1b : case 0x03 : case 0x04 : case 0x10b : quit = 1; break; case 0x09 : case 'r' : case 'R' : case 0x103 : count = 16; addr += 4; break; case 0x102 : count = 16; addr -= 124; break; case 0x0d : case 0x101 : addr = addr + 4; break; case 'B' : case 'b' : case 0x100: addr = addr - 4; break; case '+' : case '=' : case 0x104 : addr = addr + 0x80; break; case '-' : case '_' : case 0x105 : addr = addr - 0x80; break; case ' ' : quit = do_disassemble((u_char *)result); break; case 'J' : case 'j' : addr = (u_char *)result; break; case '/' : case '?' : printf("\'\xe3\' - Backwards 1 word\n\r"); printf("\'\xe4\' - Forwards 1 word\n\r"); printf("\'\xe5\' - Backwords 16 words\n\r"); printf("\'\xe6\' - Forwards 16 words\n\r"); printf("\'Q\' - Quit\n\r"); printf("\'B\' - Back a word\n\r"); printf("\'R\' - Disassemble 16 words\n\r"); printf("\'J\' - Jump to address\n\r"); printf("\' \' - Branch to address\n\r"); printf(" - Return from branch\n\r"); printf("\'-\' - Skip backwards 128 words\n\r"); printf("\'+\' - Skip forwards 128 words\n\r"); break; } } else { addr += 4; } } while (!quit && key != 0x08); return(quit); } /* End of shell_disassem.c */