diff options
Diffstat (limited to 'libsigsegv/src/fault-linux-m68k.c')
-rw-r--r-- | libsigsegv/src/fault-linux-m68k.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libsigsegv/src/fault-linux-m68k.c b/libsigsegv/src/fault-linux-m68k.c new file mode 100644 index 00000000..8562e30e --- /dev/null +++ b/libsigsegv/src/fault-linux-m68k.c @@ -0,0 +1,44 @@ +/* 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; +} |