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kgdb_glue.c revision 1.2.40.1 
      1  1.2.40.1      jym /*	$NetBSD: kgdb_glue.c,v 1.2.40.1 2009/05/13 17:18:15 jym Exp $	*/
      2       1.2  garbled 
      3       1.2  garbled /*
      4       1.2  garbled  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5       1.2  garbled  * Copyright (C) 1995, 1996 TooLs GmbH.
      6       1.2  garbled  * All rights reserved.
      7       1.2  garbled  *
      8       1.2  garbled  * Redistribution and use in source and binary forms, with or without
      9       1.2  garbled  * modification, are permitted provided that the following conditions
     10       1.2  garbled  * are met:
     11       1.2  garbled  * 1. Redistributions of source code must retain the above copyright
     12       1.2  garbled  *    notice, this list of conditions and the following disclaimer.
     13       1.2  garbled  * 2. Redistributions in binary form must reproduce the above copyright
     14       1.2  garbled  *    notice, this list of conditions and the following disclaimer in the
     15       1.2  garbled  *    documentation and/or other materials provided with the distribution.
     16       1.2  garbled  * 3. All advertising materials mentioning features or use of this software
     17       1.2  garbled  *    must display the following acknowledgement:
     18       1.2  garbled  *	This product includes software developed by TooLs GmbH.
     19       1.2  garbled  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20       1.2  garbled  *    derived from this software without specific prior written permission.
     21       1.2  garbled  *
     22       1.2  garbled  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23       1.2  garbled  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24       1.2  garbled  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25       1.2  garbled  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26       1.2  garbled  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27       1.2  garbled  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28       1.2  garbled  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29       1.2  garbled  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30       1.2  garbled  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31       1.2  garbled  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32       1.2  garbled  */
     33       1.2  garbled 
     34       1.2  garbled #include <sys/cdefs.h>
     35  1.2.40.1      jym __KERNEL_RCSID(0, "$NetBSD: kgdb_glue.c,v 1.2.40.1 2009/05/13 17:18:15 jym Exp $");
     36       1.2  garbled 
     37       1.2  garbled #include <sys/param.h>
     38       1.2  garbled 
     39       1.2  garbled #include <kgdb/kgdb.h>
     40       1.2  garbled 
     41       1.2  garbled #include <machine/frame.h>
     42       1.2  garbled #include <machine/kgdb.h>
     43       1.2  garbled #include <machine/pcb.h>
     44       1.2  garbled #include <machine/psl.h>
     45       1.2  garbled #include <machine/trap.h>
     46       1.2  garbled 
     47       1.2  garbled int kgdbregs[NREG];
     48       1.2  garbled 
     49       1.2  garbled #ifdef	KGDBUSERHACK
     50       1.2  garbled int kgdbsr;	/* TEMPRORARY (Really needs some better mechanism)	XXX */
     51       1.2  garbled int savesr;
     52       1.2  garbled #endif
     53       1.2  garbled 
     54       1.2  garbled void
     55  1.2.40.1      jym kgdbinit(void)
     56       1.2  garbled {
     57       1.2  garbled }
     58       1.2  garbled 
     59       1.2  garbled int
     60  1.2.40.1      jym kgdb_poll(void)
     61       1.2  garbled {
     62       1.2  garbled 	/* for now: */
     63       1.2  garbled 	return 0;
     64       1.2  garbled }
     65       1.2  garbled 
     66       1.2  garbled int
     67       1.2  garbled kgdb_trap_glue(struct trapframe *frame)
     68       1.2  garbled {
     69       1.2  garbled 	if (!(frame->srr1 & PSL_PR)
     70       1.2  garbled 	    && (frame->exc == EXC_TRC
     71       1.2  garbled 		|| (frame->exc == EXC_PGM
     72       1.2  garbled 		    && (frame->srr1 & 0x20000))
     73       1.2  garbled 		|| frame->exc == EXC_BPT)) {
     74       1.2  garbled #ifdef	KGDBUSERHACK
     75       1.2  garbled 		__asm ("mfsr %0,%1" : "=r"(savesr) : "K"(USER_SR)); /* see above		XXX */
     76       1.2  garbled #endif
     77       1.2  garbled 		kgdbcopy(frame, kgdbregs, sizeof kgdbregs);
     78       1.2  garbled 		kgdbregs[MSR] &= ~PSL_BE;
     79       1.2  garbled 
     80       1.2  garbled 		switch (kgdbcmds()) {
     81       1.2  garbled 		case 2:
     82       1.2  garbled 		case 0:
     83       1.2  garbled 			kgdbregs[MSR] &= ~PSL_SE;
     84       1.2  garbled 			break;
     85       1.2  garbled 		case 1:
     86       1.2  garbled 			kgdbregs[MSR] |= PSL_SE;
     87       1.2  garbled 			break;
     88       1.2  garbled 		}
     89       1.2  garbled 		kgdbcopy(kgdbregs, frame, sizeof kgdbregs);
     90       1.2  garbled #ifdef	KGDBUSERHACK
     91       1.2  garbled 		__asm ("mtsr %0,%1; isync" :: "K"(USER_SR), "r"(savesr));
     92       1.2  garbled #endif
     93       1.2  garbled 		return 1;
     94       1.2  garbled 	}
     95       1.2  garbled 	return 0;
     96       1.2  garbled }
     97