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/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* HISTORY
* $Log: db_trap.c,v $
* Revision 1.1 1992/03/25 21:45:31 pace
* Initial revision
*
* Revision 2.5 91/02/05 17:07:16 mrt
* Changed to new Mach copyright
* [91/01/31 16:19:35 mrt]
*
* Revision 2.4 91/01/08 15:09:17 rpd
* Changed db_stop_at_pc's arguments.
* Print db_inst_count, db_load_count, db_store_count.
* [90/11/27 rpd]
*
* Revision 2.3 90/10/25 14:44:11 rwd
* From rpd.
* [90/10/19 17:03:17 rwd]
*
* Generalized the watchpoint support.
* [90/10/16 rwd]
* Added watchpoint support.
* [90/10/16 rpd]
*
* Revision 2.2 90/08/27 21:52:52 dbg
* Assign to db_dot before calling the print function.
* [90/08/20 af]
* Reduce lint.
* [90/08/07 dbg]
* Created.
* [90/07/25 dbg]
*
*/
/*
* Author: David B. Golub, Carnegie Mellon University
* Date: 7/90
*/
/*
* Trap entry point to kernel debugger.
*/
#include "param.h"
#include "proc.h"
#include <ddb/db_command.h>
#include <ddb/db_break.h>
extern void db_restart_at_pc();
extern boolean_t db_stop_at_pc();
extern int db_inst_count;
extern int db_load_count;
extern int db_store_count;
db_trap(type, code)
int type, code;
{
boolean_t bkpt;
boolean_t watchpt;
bkpt = IS_BREAKPOINT_TRAP(type, code);
watchpt = IS_WATCHPOINT_TRAP(type, code);
if (db_stop_at_pc(&bkpt)) {
if (db_inst_count) {
db_printf("After %d instructions (%d loads, %d stores),\n",
db_inst_count, db_load_count, db_store_count);
}
if (bkpt)
db_printf("Breakpoint at\t");
else if (watchpt)
db_printf("Watchpoint at\t");
else
db_printf("Stopped at\t");
db_dot = PC_REGS(DDB_REGS);
db_print_loc_and_inst(db_dot);
db_command_loop();
}
db_restart_at_pc(watchpt);
}
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