diff options
Diffstat (limited to 'sys/arch/arm32/kshell/shell_disassem.c')
| -rw-r--r-- | sys/arch/arm32/kshell/shell_disassem.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/sys/arch/arm32/kshell/shell_disassem.c b/sys/arch/arm32/kshell/shell_disassem.c new file mode 100644 index 00000000000..6de632e932c --- /dev/null +++ b/sys/arch/arm32/kshell/shell_disassem.c @@ -0,0 +1,186 @@ +/* $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 <sys/param.h> +#include <sys/systm.h> + +/* Local header files */ + +#include <machine/katelib.h> + +/* 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 <addr>\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("<BS> - 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 */ |