... and here is arch/um/include/siginfo_segv.h...

                                Jeff

-- 
Work email - jdike at linux dot intel dot com


/*
 * Copyright (C) 2002- 2007 Jeff Dike ([EMAIL PROTECTED],linux.intel}.com)
 * Licensed under the GPL
 */

#ifndef __SIGINFO_SIGSEGV_H_
#define __SIGINFO_SIGSEGV_H_

/*
 * Provide signal.h, except for replacing siginfo_t with one that has
 * the CPU trap number and error code in the SIGSEGV case.
 */

#include <time.h>

/* Rename the signal.h siginfo and siginfo_t out of the way */
#define siginfo old_siginfo
#define siginfo_t old_siginfo_t

#include <signal.h>

#undef siginfo
#undef siginfo_t

#define __ARCH_SI_TRAPNO
#define __ARCH_SI_ERROR

/* The new siginfo_t, plus associated definitions */

/*
 * This is the size (including padding) of the part of the
 * struct siginfo that is before the union.
 */
#ifndef __ARCH_SI_PREAMBLE_SIZE
#define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
#endif

#define SI_MAX_SIZE     128
#ifndef SI_PAD_SIZE
#define SI_PAD_SIZE     ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int))
#endif

#ifndef __ARCH_SI_UID_T
#define __ARCH_SI_UID_T uid_t
#endif

/*
 * The default "si_band" type is "long", as specified by POSIX.
 * However, some architectures want to override this to "int"
 * for historical compatibility reasons, so we allow that.
 */
#ifndef __ARCH_SI_BAND_T
#define __ARCH_SI_BAND_T long
#endif

#define __user

typedef struct siginfo {
        int si_signo;
        int si_errno;
        int si_code;

        union {
                int _pad[SI_PAD_SIZE];

                /* kill() */
                struct {
                        pid_t _pid;             /* sender's pid */
                        __ARCH_SI_UID_T _uid;   /* sender's uid */
                } _kill;

                /* POSIX.1b timers */
                struct {
                        timer_t _tid;           /* timer id */
                        int _overrun;           /* overrun count */
                        char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
                        sigval_t _sigval;       /* same as below */
                        int _sys_private;       /* not to be passed to user */
                } _timer;

                /* POSIX.1b signals */
                struct {
                        pid_t _pid;             /* sender's pid */
                        __ARCH_SI_UID_T _uid;   /* sender's uid */
                        sigval_t _sigval;
                } _rt;

                /* SIGCHLD */
                struct {
                        pid_t _pid;             /* which child */
                        __ARCH_SI_UID_T _uid;   /* sender's uid */
                        int _status;            /* exit code */
                        clock_t _utime;
                        clock_t _stime;
                } _sigchld;

                /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
                struct {
                        void __user *_addr; /* faulting insn/memory ref. */
#ifdef __ARCH_SI_TRAPNO
                        int _trapno;    /* TRAP # which caused the signal */
#endif
#ifdef __ARCH_SI_ERROR
                        int _error;     /* CPU error code */
#endif
                } _sigfault;

                /* SIGPOLL */
                struct {
                        __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG 
*/
                        int _fd;
                } _sigpoll;
        } _sifields;
} siginfo_t;

#ifdef __ARCH_SI_TRAPNO
#define si_trapno       _sifields._sigfault._trapno
#endif
#ifdef __ARCH_SI_ERROR
#define si_error        _sifields._sigfault._error
#endif

#undef si_addr
#define si_addr _sifields._sigfault._addr

#define GET_FAULTINFO_FROM_SI(fi, si) \
        { \
                (fi).cr2 = (unsigned long) (si).si_addr; \
                (fi).error_code = (si).si_error; \
                (fi).trap_no = (si).si_trapno; \
        }

#endif

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