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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/viawd/@/mips/mips/gdb_machdep.c |
/* $NetBSD: kgdb_machdep.c,v 1.11 2005/12/24 22:45:35 perry Exp $ */
/*-
* Copyright (c) 2004 Marcel Moolenaar
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 THE AUTHORS 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.
*/
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 THE FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* Copyright (c) 1996 Matthias Pfaller.
* 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 Matthias Pfaller.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
*
* JNPR: gdb_machdep.c,v 1.1 2007/08/09 12:25:25 katta
* $FreeBSD: release/9.1.0/sys/mips/mips/gdb_machdep.c 231150 2012-02-07 19:23:08Z jhb $
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/signal.h>
#include <sys/pcpu.h>
#include <machine/gdb_machdep.h>
#include <machine/pcb.h>
#include <machine/reg.h>
#include <machine/trap.h>
#include <gdb/gdb.h>
void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{
*regsz = gdb_cpu_regsz(regnum);
if (kdb_thread == curthread) {
register_t *zero_ptr = &kdb_frame->zero;
return zero_ptr + regnum;
}
switch (regnum) {
/*
* S0..S7
*/
case 16:
case 17:
case 18:
case 19:
case 20:
case 21:
case 22:
case 23:
return (&kdb_thrctx->pcb_context[PCB_REG_S0 + regnum - 16]);
case 28:
return (&kdb_thrctx->pcb_context[PCB_REG_GP]);
case 29:
return (&kdb_thrctx->pcb_context[PCB_REG_SP]);
case 30:
return (&kdb_thrctx->pcb_context[PCB_REG_S8]);
case 31:
return (&kdb_thrctx->pcb_context[PCB_REG_RA]);
case 37:
return (&kdb_thrctx->pcb_context[PCB_REG_PC]);
}
return (NULL);
}
void
gdb_cpu_setreg(int regnum, void *val)
{
switch (regnum) {
case GDB_REG_PC:
kdb_thrctx->pcb_context[10] = *(register_t *)val;
if (kdb_thread == curthread)
kdb_frame->pc = *(register_t *)val;
}
}
int
gdb_cpu_signal(int entry, int code)
{
switch (entry) {
case T_TLB_MOD:
case T_TLB_MOD+T_USER:
case T_TLB_LD_MISS:
case T_TLB_ST_MISS:
case T_TLB_LD_MISS+T_USER:
case T_TLB_ST_MISS+T_USER:
case T_ADDR_ERR_LD: /* misaligned access */
case T_ADDR_ERR_ST: /* misaligned access */
case T_BUS_ERR_LD_ST: /* BERR asserted to CPU */
case T_ADDR_ERR_LD+T_USER: /* misaligned or kseg access */
case T_ADDR_ERR_ST+T_USER: /* misaligned or kseg access */
case T_BUS_ERR_IFETCH+T_USER: /* BERR asserted to CPU */
case T_BUS_ERR_LD_ST+T_USER: /* BERR asserted to CPU */
return (SIGSEGV);
case T_BREAK:
case T_BREAK+T_USER:
return (SIGTRAP);
case T_RES_INST+T_USER:
case T_COP_UNUSABLE+T_USER:
return (SIGILL);
case T_FPE+T_USER:
case T_OVFLOW+T_USER:
return (SIGFPE);
default:
return (SIGEMT);
}
}