/* $NetBSD: ipkdb_glue.c,v 1.9 2007/01/24 13:08:14 hubertf Exp $ */ /* * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: ipkdb_glue.c,v 1.9 2007/01/24 13:08:14 hubertf Exp $"); #include <sys/param.h> #include <ipkdb/ipkdb.h> #include <machine/frame.h> #include <machine/ipkdb.h> #include <machine/pcb.h> #include <machine/psl.h> #include <machine/trap.h> #include <machine/vmparam.h> int ipkdbregs[NREG]; int ipkdb_trap_glue __P((struct trapframe *)); #ifdef IPKDBUSERHACK int ipkdbsr; /* TEMPRORARY (Really needs some better mechanism) XXX */ int savesr; #endif void ipkdbinit(void) { } int ipkdb_poll(void) { /* for now: */ return 0; } int ipkdb_trap_glue(struct trapframe *frame) { if (!(frame->srr1 & PSL_PR) && (frame->exc == EXC_TRC || (frame->exc == EXC_PGM && (frame->srr1 & 0x20000)) || frame->exc == EXC_BPT)) { #ifdef IPKDBUSERHACK /* XXX see above */ __asm ("mfsr %0,%1" : "=r"(savesr) : "n"(USER_SR)); #endif ipkdbzero(ipkdbregs, sizeof ipkdbregs); ipkdbcopy(frame->fixreg, &ipkdbregs[FIX], NFIX * sizeof(int)); ipkdbregs[PC] = frame->srr0; ipkdbregs[PS] = frame->srr1 & ~PSL_BE; ipkdbregs[CR] = frame->cr; ipkdbregs[LR] = frame->lr; ipkdbregs[CTR] = frame->ctr; ipkdbregs[XER] = frame->xer; switch (ipkdbcmds()) { case 2: case 0: ipkdbregs[PS] &= ~PSL_SE; break; case 1: ipkdbregs[PS] |= PSL_SE; break; } ipkdbcopy(&ipkdbregs[FIX], frame->fixreg, NFIX * sizeof(int)); frame->srr0 = ipkdbregs[PC]; frame->srr1 = ipkdbregs[PS]; frame->cr = ipkdbregs[CR]; frame->lr = ipkdbregs[LR]; frame->ctr = ipkdbregs[CTR]; frame->xer = ipkdbregs[XER]; #ifdef IPKDBUSERHACK __asm ("mtsr %0,%1; isync" :: "n"(USER_SR), "r"(savesr)); #endif return 1; } return 0; }