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/* Fault handler information subroutine. Linux/m68k version.
* Taken from gcc-3.2/boehm-gc/os_dep.c.
*
* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
* Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved.
* Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved.
* Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved.
*
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
*
* Permission is hereby granted to use or copy this program
* for any purpose, provided the above notices are retained on all copies.
* Permission to modify the code and to distribute modified code is granted,
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*/
static void *
get_fault_addr (struct sigcontext *scp)
{
int format = (scp->sc_formatvec >> 12) & 0xf;
unsigned long *framedata = (unsigned long *) (scp + 1);
unsigned long ea;
switch (format)
{
case 10: case 11: /* 68020/030 */
ea = framedata[2];
return (void *) ea;
case 7: /* 68040 */
ea = framedata[3];
break;
case 4: /* 68060 */
ea = framedata[0];
break;
default:
return (void *) 0;
}
if (framedata[1] & 0x08000000)
/* Correct addr on misaligned access. */
ea = (ea + 4095) & ~4095;
return (void *) ea;
}
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