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107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
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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
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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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* HISTORY
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* $Log: db_trap.c,v $
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* Revision 1.1 1992/03/25 21:45:31 pace
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* Initial revision
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*
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* Revision 2.5 91/02/05 17:07:16 mrt
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* Changed to new Mach copyright
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* [91/01/31 16:19:35 mrt]
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*
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* Revision 2.4 91/01/08 15:09:17 rpd
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* Changed db_stop_at_pc's arguments.
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* Print db_inst_count, db_load_count, db_store_count.
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* [90/11/27 rpd]
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*
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* Revision 2.3 90/10/25 14:44:11 rwd
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* From rpd.
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* [90/10/19 17:03:17 rwd]
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*
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* Generalized the watchpoint support.
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* [90/10/16 rwd]
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* Added watchpoint support.
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* [90/10/16 rpd]
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*
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* Revision 2.2 90/08/27 21:52:52 dbg
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* Assign to db_dot before calling the print function.
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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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/*
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* Trap entry point to kernel debugger.
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*/
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#include "param.h"
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#include "proc.h"
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#include <ddb/db_command.h>
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#include <ddb/db_break.h>
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extern void db_restart_at_pc();
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extern boolean_t db_stop_at_pc();
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extern int db_inst_count;
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extern int db_load_count;
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extern int db_store_count;
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db_trap(type, code)
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int type, code;
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{
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boolean_t bkpt;
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boolean_t watchpt;
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bkpt = IS_BREAKPOINT_TRAP(type, code);
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watchpt = IS_WATCHPOINT_TRAP(type, code);
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if (db_stop_at_pc(&bkpt)) {
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if (db_inst_count) {
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db_printf("After %d instructions (%d loads, %d stores),\n",
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db_inst_count, db_load_count, db_store_count);
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}
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if (bkpt)
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db_printf("Breakpoint at\t");
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else if (watchpt)
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db_printf("Watchpoint at\t");
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else
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db_printf("Stopped at\t");
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db_dot = PC_REGS(DDB_REGS);
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db_print_loc_and_inst(db_dot);
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db_command_loop();
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}
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db_restart_at_pc(watchpt);
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}
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