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    #ifndef _ASMPPC_SIGNAL_H
    #define _ASMPPC_SIGNAL_H
    
    #include <linux/types.h>
    
    /* Avoid too many header ordering problems.  */
    struct siginfo;
    
    /* Most things should be clean enough to redefine this at will, if care
       is taken to make libc match.  */
    
    #define _NSIG		64
    #define _NSIG_BPW	32
    #define _NSIG_WORDS	(_NSIG / _NSIG_BPW)
    
    typedef unsigned long old_sigset_t;		/* at least 32 bits */
    
    typedef struct {
    	unsigned long sig[_NSIG_WORDS];
    } sigset_t;
    
    #define SIGHUP		 1
    #define SIGINT		 2
    #define SIGQUIT		 3
    #define SIGILL		 4
    #define SIGTRAP		 5
    #define SIGABRT		 6
    #define SIGIOT		 6
    #define SIGBUS		 7
    #define SIGFPE		 8
    #define SIGKILL		 9
    #define SIGUSR1		10
    #define SIGSEGV		11
    #define SIGUSR2		12
    #define SIGPIPE		13
    #define SIGALRM		14
    #define SIGTERM		15
    #define SIGSTKFLT	16
    #define SIGCHLD		17
    #define SIGCONT		18
    #define SIGSTOP		19
    #define SIGTSTP		20
    #define SIGTTIN		21
    #define SIGTTOU		22
    #define SIGURG		23
    #define SIGXCPU		24
    #define SIGXFSZ		25
    #define SIGVTALRM	26
    #define SIGPROF		27
    #define SIGWINCH	28
    #define SIGIO		29
    #define SIGPOLL		SIGIO
    /*
    #define SIGLOST		29
    */
    #define SIGPWR		30
    #define SIGSYS		31
    #define	SIGUNUSED	31
    
    /* These should not be considered constants from userland.  */
    #define SIGRTMIN	32
    #define SIGRTMAX	(_NSIG-1)
    
    /*
     * SA_FLAGS values:
     *
     * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
     * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
     * SA_RESTART flag to get restarting signals (which were the default long ago)
     * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
     * SA_RESETHAND clears the handler when the signal is delivered.
     * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
     * SA_NODEFER prevents the current signal from being masked in the handler.
     *
     * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
     * Unix names RESETHAND and NODEFER respectively.
     */
    #define SA_NOCLDSTOP	0x00000001
    #define SA_NOCLDWAIT	0x00000002 /* not supported yet */
    #define SA_SIGINFO	0x00000004
    #define SA_ONSTACK	0x08000000
    #define SA_RESTART	0x10000000
    #define SA_NODEFER	0x40000000
    #define SA_RESETHAND	0x80000000
    
    #define SA_NOMASK	SA_NODEFER
    #define SA_ONESHOT	SA_RESETHAND
    #define SA_INTERRUPT	0x20000000 /* dummy -- ignored */
    
    #define SA_RESTORER	0x04000000
    
    /*
     * sigaltstack controls
     */
    #define SS_ONSTACK	1
    #define SS_DISABLE	2
    
    #define MINSIGSTKSZ	2048
    #define SIGSTKSZ	8192
    #ifdef __KERNEL__
    
    /*
     * These values of sa_flags are used only by the kernel as part of the
     * irq handling routines.
     *
     * SA_INTERRUPT is also used by the irq handling routines.
     * SA_SHIRQ is for shared interrupt support on PCI and EISA.
     */
    #define SA_PROBE		SA_ONESHOT
    #define SA_SAMPLE_RANDOM	SA_RESTART
    #define SA_SHIRQ		0x04000000
    #endif
    
    #define SIG_BLOCK          0	/* for blocking signals */
    #define SIG_UNBLOCK        1	/* for unblocking signals */
    #define SIG_SETMASK        2	/* for setting the signal mask */
    
    /* Type of a signal handler.  */
    typedef void (*__sighandler_t)(int);
    
    #define SIG_DFL	((__sighandler_t)0)	/* default signal handling */
    #define SIG_IGN	((__sighandler_t)1)	/* ignore signal */
    #define SIG_ERR	((__sighandler_t)-1)	/* error return from signal */
    
    struct old_sigaction {
    	__sighandler_t sa_handler;
    	old_sigset_t sa_mask;
    	unsigned long sa_flags;
    	void (*sa_restorer)(void);
    };
    
    struct sigaction {
    	__sighandler_t sa_handler;
    	unsigned long sa_flags;
    	void (*sa_restorer)(void);
    	sigset_t sa_mask;		/* mask last for extensibility */
    };
    
    struct k_sigaction {
    	struct sigaction sa;
    };
    
    typedef struct sigaltstack {
    	void *ss_sp;
    	int ss_flags;
    	size_t ss_size;
    } stack_t;
    
    #ifdef __KERNEL__
    #include <asm/sigcontext.h>
    
    #endif
    
    #endif