Fault Address from sigcontext for the various archs

• Next message: Wade Hampton: "Re: eject weirdness on NEC disc changer, kernel 2.4.2"
• Previous message: Richard B. Johnson: "Re: Loop stuck in -D state"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Greetings! I'm trying to assist in porting gcl to the various Linux
archs, and the code as is needs the fault address from struct
sigcontext. i386 and m68k work, with solutions shown below. What
about the other archs? Where can I find the fault address around this
struct?

Thanks!

=============================================================================
i386
=============================================================================
#define GET_FAULT_ADDR(sig,code,sv,a) \
    ((void *)(((struct sigcontext_struct *)(&code))->cr2))
=============================================================================
m68k
=============================================================================
#define GET_FAULT_ADDR(sig,code,sv,a) \
    ({ \
                struct sigcontext *scp = (struct sigcontext *)(sv);\
                int format = (scp->sc_formatvec >> 12) & 0xf;\
                unsigned long *framedata = (unsigned long *)(scp + 1);\
                unsigned long ea;\
                if (format == 0xa || format == 0xb)\
                        /* 68020/030 */\
                        ea = framedata[2];\
                else if (format == 7)\
                        /* 68040 */\
                        ea = framedata[3];\
                else if (format == 4) {\
                        /* 68060 */\
                        ea = framedata[0];\
                        if (framedata[1] & 0x08000000)\
                                /* correct addr on misaligned access */\
                                ea = (ea+4095)&(~4095);\
                }\
                ea;\
        })
=============================================================================

-- 
Camm Maguire			     			camm@enhanced.com
==========================================================================
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

• Next message: Wade Hampton: "Re: eject weirdness on NEC disc changer, kernel 2.4.2"
• Previous message: Richard B. Johnson: "Re: Loop stuck in -D state"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Wed Mar 07 2001 - 21:00:17 EST