97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/* $NetBSD: kgdb_glue.c,v 1.3 2009/03/18 10:22:34 cegger Exp $ */
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kgdb_glue.c,v 1.3 2009/03/18 10:22:34 cegger Exp $");
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#include <sys/param.h>
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#include <kgdb/kgdb.h>
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#include <machine/frame.h>
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#include <machine/kgdb.h>
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#include <machine/pcb.h>
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#include <machine/psl.h>
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#include <machine/trap.h>
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int kgdbregs[NREG];
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#ifdef KGDBUSERHACK
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int kgdbsr; /* TEMPRORARY (Really needs some better mechanism) XXX */
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int savesr;
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#endif
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void
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kgdbinit(void)
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{
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}
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int
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kgdb_poll(void)
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{
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/* for now: */
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return 0;
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}
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int
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kgdb_trap_glue(struct trapframe *frame)
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{
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if (!(frame->srr1 & PSL_PR)
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&& (frame->exc == EXC_TRC
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|| (frame->exc == EXC_PGM
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&& (frame->srr1 & 0x20000))
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|| frame->exc == EXC_BPT)) {
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#ifdef KGDBUSERHACK
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__asm ("mfsr %0,%1" : "=r"(savesr) : "K"(USER_SR)); /* see above XXX */
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#endif
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kgdbcopy(frame, kgdbregs, sizeof kgdbregs);
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kgdbregs[MSR] &= ~PSL_BE;
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switch (kgdbcmds()) {
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case 2:
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case 0:
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kgdbregs[MSR] &= ~PSL_SE;
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break;
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case 1:
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kgdbregs[MSR] |= PSL_SE;
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break;
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}
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kgdbcopy(kgdbregs, frame, sizeof kgdbregs);
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#ifdef KGDBUSERHACK
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__asm ("mtsr %0,%1; isync" :: "K"(USER_SR), "r"(savesr));
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#endif
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return 1;
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}
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return 0;
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}
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