373 lines
7.8 KiB
C
373 lines
7.8 KiB
C
/*
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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
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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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/*
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* $Id: db_examine.c,v 1.2 1993/05/20 03:39:12 cgd Exp $
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*
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* HISTORY
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* $Log: db_examine.c,v $
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* Revision 1.2 1993/05/20 03:39:12 cgd
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* add explicit rcs id
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*
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* Revision 1.1.1.1 1993/03/21 09:46:26 cgd
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* initial import of 386bsd-0.1 sources
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*
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* Revision 1.1 1992/03/25 21:45:07 pace
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* Initial revision
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*
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* Revision 2.4 91/02/05 17:06:20 mrt
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* Changed to new Mach copyright
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* [91/01/31 16:17:37 mrt]
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*
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* Revision 2.3 90/11/07 16:49:23 rpd
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* Added db_search_cmd, db_search.
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* [90/11/06 rpd]
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*
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* Revision 2.2 90/08/27 21:50:38 dbg
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* Add 'r', 'z' to print and examine formats.
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* Change calling sequence of db_disasm.
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* db_examine sets db_prev and db_next instead of explicitly
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* advancing dot.
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* [90/08/20 dbg]
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* Reflected changes in db_printsym()'s calling seq.
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* [90/08/20 af]
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* Reduce lint.
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* [90/08/07 dbg]
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* Created.
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* [90/07/25 dbg]
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*
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*/
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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 "param.h"
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#include "proc.h"
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#include <machine/db_machdep.h> /* type definitions */
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#include <ddb/db_lex.h>
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#include <ddb/db_output.h>
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#include <ddb/db_command.h>
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#include <ddb/db_sym.h>
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char db_examine_format[TOK_STRING_SIZE] = "x";
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extern db_addr_t db_disasm(/* db_addr_t, boolean_t */);
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/* instruction disassembler */
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/*
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* Examine (print) data.
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*/
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/*ARGSUSED*/
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void
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db_examine_cmd(addr, have_addr, count, modif)
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db_expr_t addr;
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int have_addr;
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db_expr_t count;
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char * modif;
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{
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if (modif[0] != '\0')
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db_strcpy(db_examine_format, modif);
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if (count == -1)
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count = 1;
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db_examine((db_addr_t) addr, db_examine_format, count);
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}
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db_examine(addr, fmt, count)
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register
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db_addr_t addr;
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char * fmt; /* format string */
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int count; /* repeat count */
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{
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int c;
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db_expr_t value;
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int size;
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int width;
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char * fp;
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while (--count >= 0) {
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fp = fmt;
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size = 4;
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width = 16;
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while ((c = *fp++) != 0) {
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switch (c) {
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case 'b':
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size = 1;
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width = 4;
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break;
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case 'h':
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size = 2;
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width = 8;
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break;
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case 'l':
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size = 4;
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width = 16;
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break;
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case 'a': /* address */
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/* always forces a new line */
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if (db_print_position() != 0)
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db_printf("\n");
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db_prev = addr;
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db_printsym(addr, DB_STGY_ANY);
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db_printf(":\t");
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break;
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default:
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if (db_print_position() == 0) {
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/* If we hit a new symbol, print it */
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char * name;
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db_expr_t off;
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db_find_sym_and_offset(addr, &name, &off);
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if (off == 0)
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db_printf("%s:\t", name);
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else
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db_printf("\t\t");
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db_prev = addr;
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}
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switch (c) {
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case 'r': /* signed, current radix */
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value = db_get_value(addr, size, TRUE);
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addr += size;
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db_printf("%-*r", width, value);
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break;
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case 'x': /* unsigned hex */
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value = db_get_value(addr, size, FALSE);
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addr += size;
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db_printf("%-*x", width, value);
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break;
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case 'z': /* signed hex */
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value = db_get_value(addr, size, TRUE);
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addr += size;
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db_printf("%-*z", width, value);
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break;
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case 'd': /* signed decimal */
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value = db_get_value(addr, size, TRUE);
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addr += size;
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db_printf("%-*d", width, value);
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break;
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case 'u': /* unsigned decimal */
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value = db_get_value(addr, size, FALSE);
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addr += size;
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db_printf("%-*u", width, value);
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break;
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case 'o': /* unsigned octal */
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value = db_get_value(addr, size, FALSE);
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addr += size;
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db_printf("%-*o", width, value);
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break;
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case 'c': /* character */
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value = db_get_value(addr, 1, FALSE);
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addr += 1;
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if (value >= ' ' && value <= '~')
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db_printf("%c", value);
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else
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db_printf("\\%03o", value);
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break;
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case 's': /* null-terminated string */
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for (;;) {
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value = db_get_value(addr, 1, FALSE);
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addr += 1;
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if (value == 0)
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break;
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if (value >= ' ' && value <= '~')
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db_printf("%c", value);
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else
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db_printf("\\%03o", value);
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}
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break;
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case 'i': /* instruction */
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addr = db_disasm(addr, FALSE);
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break;
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case 'I': /* instruction, alternate form */
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addr = db_disasm(addr, TRUE);
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break;
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default:
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break;
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}
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if (db_print_position() != 0)
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db_end_line();
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break;
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}
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}
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}
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db_next = addr;
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}
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/*
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* Print value.
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*/
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char db_print_format = 'x';
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/*ARGSUSED*/
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void
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db_print_cmd(addr, have_addr, count, modif)
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db_expr_t addr;
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int 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_expr_t value;
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if (modif[0] != '\0')
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db_print_format = modif[0];
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switch (db_print_format) {
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case 'a':
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db_printsym((db_addr_t)addr, DB_STGY_ANY);
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break;
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case 'r':
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db_printf("%11r", addr);
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break;
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case 'x':
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db_printf("%8x", addr);
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break;
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case 'z':
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db_printf("%8z", addr);
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break;
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case 'd':
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db_printf("%11d", addr);
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break;
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case 'u':
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db_printf("%11u", addr);
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break;
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case 'o':
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db_printf("%16o", addr);
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break;
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case 'c':
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value = addr & 0xFF;
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if (value >= ' ' && value <= '~')
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db_printf("%c", value);
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else
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db_printf("\\%03o", value);
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break;
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}
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db_printf("\n");
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}
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db_print_loc_and_inst(loc)
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db_addr_t loc;
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{
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db_printsym(loc, DB_STGY_PROC);
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db_printf(":\t");
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(void) db_disasm(loc, TRUE);
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}
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db_strcpy(dst, src)
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register char *dst;
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register char *src;
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{
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while (*dst++ = *src++)
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;
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}
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/*
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* Search for a value in memory.
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* Syntax: search [/bhl] addr value [mask] [,count]
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*/
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void
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db_search_cmd()
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{
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int t;
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db_addr_t addr;
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int size;
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db_expr_t value;
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db_expr_t mask;
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unsigned int count;
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t = db_read_token();
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if (t == tSLASH) {
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t = db_read_token();
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if (t != tIDENT) {
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bad_modifier:
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db_printf("Bad modifier\n");
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db_flush_lex();
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return;
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}
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if (!strcmp(db_tok_string, "b"))
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size = 1;
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else if (!strcmp(db_tok_string, "h"))
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size = 2;
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else if (!strcmp(db_tok_string, "l"))
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size = 4;
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else
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goto bad_modifier;
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} else {
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db_unread_token(t);
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size = 4;
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}
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if (!db_expression(&addr)) {
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db_printf("Address missing\n");
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db_flush_lex();
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return;
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}
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if (!db_expression(&value)) {
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db_printf("Value missing\n");
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db_flush_lex();
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return;
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}
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if (!db_expression(&mask))
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mask = 0xffffffff;
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t = db_read_token();
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if (t == tCOMMA) {
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if (!db_expression(&count)) {
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db_printf("Count missing\n");
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db_flush_lex();
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return;
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}
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} else {
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db_unread_token(t);
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count = -1; /* effectively forever */
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}
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db_skip_to_eol();
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db_search(addr, size, value, mask, count);
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}
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db_search(addr, size, value, mask, count)
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register
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db_addr_t addr;
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int size;
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db_expr_t value;
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db_expr_t mask;
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unsigned int count;
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{
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while (count-- != 0) {
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db_prev = addr;
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if ((db_get_value(addr, size, FALSE) & mask) == value)
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break;
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addr += size;
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}
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db_next = addr;
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}
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