/* $OpenBSD: kgdb_m68k.c,v 1.2 2003/06/02 23:27:48 millert Exp $ */
/* $NetBSD: kgdb_m68k.c,v 1.1 1997/02/12 00:58:01 gwr Exp $ */
/*
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratories.
*
* 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
*/
/*
* Machine-dependent (m68k) part of the KGDB remote "stub"
*/
#include <sys/param.h>
#include <sys/kgdb.h>
#include <machine/frame.h>
#include <machine/trap.h>
/*
* Translate a trap number into a unix compatible signal value.
* (gdb only understands unix signal numbers).
*/
int
kgdb_signal(type)
int type;
{
int sigval;
switch (type) {
case T_ASTFLT:
case T_SSIR:
sigval = SIGINT;
break;
case T_ILLINST:
case T_PRIVINST:
case T_FMTERR:
sigval = SIGILL;
break;
case T_TRACE:
case T_TRAP15:
sigval = SIGTRAP;
break;
case T_ZERODIV:
case T_CHKINST:
case T_TRAPVINST:
case T_FPERR:
case T_COPERR:
sigval = SIGFPE;
break;
case T_BUSERR:
case T_ADDRERR:
sigval = SIGBUS;
break;
case T_MMUFLT:
sigval = SIGSEGV;
break;
default:
sigval = SIGEMT;
break;
}
return (sigval);
}
/*
* Definitions exported from gdb.
*/
/* KGDB_NUMREGS == 18 */
#define GDB_SR 16
#define GDB_PC 17
/*
* Translate the values stored in the kernel regs struct to/from
* the format understood by gdb.
*
* There is a short pad word between SP (A7) and SR which keeps the
* kernel stack long word aligned (note that this is in addition to
* the stack adjust short that we treat as the upper half of the SR
* (always zero). We must skip this when copying to/from gdb regs.
*/
void
kgdb_getregs(regs, gdb_regs)
db_regs_t *regs;
kgdb_reg_t *gdb_regs;
{
int i;
for (i = 0; i < 16; i++)
gdb_regs[i] = regs->tf_regs[i];
gdb_regs[GDB_SR] = regs->tf_sr;
gdb_regs[GDB_PC] = regs->tf_pc;
}
void
kgdb_setregs(regs, gdb_regs)
db_regs_t *regs;
kgdb_reg_t *gdb_regs;
{
int i;
for (i = 0; i < 16; i++)
regs->tf_regs[i] = gdb_regs[i];
regs->tf_sr = gdb_regs[GDB_SR] |
(regs->tf_sr & PSL_T);
regs->tf_pc = gdb_regs[GDB_PC];
}