[apple/xnu.git] / bsd / ppc / signal.h

/*
 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1992, 1993 NeXT Computer, Inc.
 */

#ifndef	_PPC_SIGNAL_
#define	_PPC_SIGNAL_ 1

#include <sys/appleapiopts.h>

#ifdef __APPLE_API_OBSOLETE
typedef int sig_atomic_t; 

/*
 * Machine-dependant flags used in sigvec call.
 */
#define	SV_SAVE_REGS	0x1000	/* Save all regs in sigcontext */

/*
 * regs_saved_t -- Describes which registers beyond what the kernel cares
 *		   about are saved to and restored from this sigcontext.
 *
 * The default is REGS_SAVED_CALLER, only the caller saved registers
 * are saved.  If the SV_SAVE_REGS flag was set when the signal
 * handler was registered with sigvec() then all the registers will be
 * saved in the sigcontext, and REGS_SAVED_ALL will be set.  The C
 * library uses REGS_SAVED_NONE in order to quickly restore kernel
 * state during a longjmp().
 */
typedef enum {
	REGS_SAVED_NONE,		/* Only kernel managed regs restored */
	REGS_SAVED_CALLER,		/* "Caller saved" regs: rpc, a0-a7,
					   t0-t4, at, lk0-lk1, xt1-xt20,
					   xr0-xr1 */
	REGS_SAVED_ALL			/* All registers */
} regs_saved_t;


/*
 * Information pushed on stack when a signal is delivered.
 * This is used by the kernel to restore state following
 * execution of the signal handler.  It is also made available
 * to the handler to allow it to properly restore state if
 * a non-standard exit is performed.
 */
struct sigcontext32 {
    int		sc_onstack;     /* sigstack state to restore */
    int		sc_mask;        /* signal mask to restore */
    int		sc_ir;			/* pc */
    int		sc_psw;         /* processor status word */
    int		sc_sp;      	/* stack pointer if sc_regs == NULL */
    void	*sc_regs;		/* (kernel private) saved state */
};

struct sigcontext64 {
    int		sc_onstack;     /* sigstack state to restore */
    int		sc_mask;        /* signal mask to restore */
    long long	sc_ir;		/* pc */
    long long	sc_psw;         /* processor status word */
    long long	sc_sp;      	/* stack pointer if sc_regs == NULL */
    void	*sc_regs;	/* (kernel private) saved state */
};

/*
 * LP64todo - Have to decide how to handle this.
 * For now, just duplicate the 32-bit context as the generic one.
 */
struct sigcontext {
    int		sc_onstack;     /* sigstack state to restore */
    int		sc_mask;        /* signal mask to restore */
    int		sc_ir;			/* pc */
    int		sc_psw;         /* processor status word */
    int		sc_sp;      	/* stack pointer if sc_regs == NULL */
    void	*sc_regs;		/* (kernel private) saved state */
};

#endif /* __APPLE_API_OBSOLETE */

#endif /* _PPC_SIGNAL_ */
Commit	Line	Data
1c79356b	1	/*
91447636	2	* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
ff6e181a A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. Please obtain a copy of the License at
	10	* http://www.opensource.apple.com/apsl/ and read it before using this
	11	* file.
1c79356b	12	*
ff6e181a A	13	* The Original Code and all software distributed under the License are
ff6e181a A	14	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	15	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	16	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
ff6e181a A	17	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	18	* Please see the License for the specific language governing rights and
	19	* limitations under the License.
1c79356b A	20	*
	21	* @APPLE_LICENSE_HEADER_END@
	22	*/
	23	/*
	24	* Copyright (c) 1992, 1993 NeXT Computer, Inc.
1c79356b A	25	*/
	26
	27	#ifndef _PPC_SIGNAL_
	28	#define _PPC_SIGNAL_ 1
	29
9bccf70c A	30	#include <sys/appleapiopts.h>
	31
	32	#ifdef __APPLE_API_OBSOLETE
1c79356b A	33	typedef int sig_atomic_t;
	34
	35	/*
	36	* Machine-dependant flags used in sigvec call.
	37	*/
	38	#define SV_SAVE_REGS 0x1000 /* Save all regs in sigcontext */
	39
	40	/*
	41	* regs_saved_t -- Describes which registers beyond what the kernel cares
	42	* about are saved to and restored from this sigcontext.
	43	*
	44	* The default is REGS_SAVED_CALLER, only the caller saved registers
	45	* are saved. If the SV_SAVE_REGS flag was set when the signal
	46	* handler was registered with sigvec() then all the registers will be
	47	* saved in the sigcontext, and REGS_SAVED_ALL will be set. The C
	48	* library uses REGS_SAVED_NONE in order to quickly restore kernel
	49	* state during a longjmp().
	50	*/
	51	typedef enum {
	52	REGS_SAVED_NONE, /* Only kernel managed regs restored */
	53	REGS_SAVED_CALLER, /* "Caller saved" regs: rpc, a0-a7,
	54	t0-t4, at, lk0-lk1, xt1-xt20,
	55	xr0-xr1 */
	56	REGS_SAVED_ALL /* All registers */
	57	} regs_saved_t;
	58
	59
	60	/*
	61	* Information pushed on stack when a signal is delivered.
	62	* This is used by the kernel to restore state following
	63	* execution of the signal handler. It is also made available
	64	* to the handler to allow it to properly restore state if
	65	* a non-standard exit is performed.
	66	*/
91447636 A	67	struct sigcontext32 {
	68	int sc_onstack; /* sigstack state to restore */
	69	int sc_mask; /* signal mask to restore */
	70	int sc_ir; /* pc */
	71	int sc_psw; /* processor status word */
	72	int sc_sp; /* stack pointer if sc_regs == NULL */
	73	void sc_regs; / (kernel private) saved state */
	74	};
	75
	76	struct sigcontext64 {
	77	int sc_onstack; /* sigstack state to restore */
	78	int sc_mask; /* signal mask to restore */
	79	long long sc_ir; /* pc */
	80	long long sc_psw; /* processor status word */
	81	long long sc_sp; /* stack pointer if sc_regs == NULL */
	82	void sc_regs; / (kernel private) saved state */
	83	};
	84
	85	/*
	86	* LP64todo - Have to decide how to handle this.
	87	* For now, just duplicate the 32-bit context as the generic one.
	88	*/
1c79356b A	89	struct sigcontext {
	90	int sc_onstack; /* sigstack state to restore */
	91	int sc_mask; /* signal mask to restore */
91447636	92	int sc_ir; /* pc */
1c79356b A	93	int sc_psw; /* processor status word */
1c79356b A	94	int sc_sp; /* stack pointer if sc_regs == NULL */
91447636	95	void sc_regs; / (kernel private) saved state */
1c79356b A	96	};
1c79356b A	97
9bccf70c A	98	#endif /* __APPLE_API_OBSOLETE */
9bccf70c A	99
1c79356b A	100	#endif /* _PPC_SIGNAL_ */
1c79356b A	101