[apple/xnu.git] / pexpert / i386 / pe_interrupt.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_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. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * 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_OSREFERENCE_LICENSE_HEADER_END@
 */
#include <pexpert/pexpert.h>
#include <pexpert/protos.h>
#include <machine/machine_routines.h>
#include <i386/mp.h>
#include <sys/kdebug.h>


void PE_incoming_interrupt(x86_saved_state_t *);


struct i386_interrupt_handler {
	IOInterruptHandler	handler;
	void			*nub;
	void			*target;
	void			*refCon;
};

typedef struct i386_interrupt_handler i386_interrupt_handler_t;

i386_interrupt_handler_t	PE_interrupt_handler;


void
PE_incoming_interrupt(x86_saved_state_t *state)
{
	i386_interrupt_handler_t	*vector;
	uint64_t			rip;
	int				interrupt;
	boolean_t			user_mode = FALSE;

        if (is_saved_state64(state) == TRUE) {
	        x86_saved_state64_t	*state64;

	        state64 = saved_state64(state);
		rip = state64->isf.rip;
		interrupt = state64->isf.trapno;
		user_mode = TRUE;
	} else {
	        x86_saved_state32_t	*state32;

	        state32 = saved_state32(state);
		if (state32->cs & 0x03)
		        user_mode = TRUE;
		rip = state32->eip;
		interrupt = state32->trapno;
	}

	KERNEL_DEBUG_CONSTANT(
		MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
		interrupt, (unsigned int)rip, user_mode, 0, 0);

	vector = &PE_interrupt_handler;

	if (!lapic_interrupt(interrupt, state)) {
		vector->handler(vector->target, NULL, vector->nub, interrupt);
	}

	KERNEL_DEBUG_CONSTANT(
		MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
		0, 0, 0, 0, 0);
}

void PE_install_interrupt_handler(void *nub,
				  __unused int source,
				  void *target,
				  IOInterruptHandler handler,
				  void *refCon)
{
	i386_interrupt_handler_t	*vector;

	vector = &PE_interrupt_handler;

	/*vector->source = source; IGNORED */
	vector->handler = handler;
	vector->nub = nub;
	vector->target = target;
	vector->refCon = refCon;
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
8f6c56a5 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. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	#include <pexpert/pexpert.h>
	29	#include <pexpert/protos.h>
	30	#include <machine/machine_routines.h>
55e303ae	31	#include <i386/mp.h>
9bccf70c	32	#include <sys/kdebug.h>
1c79356b	33
91447636	34
89b3af67	35	void PE_incoming_interrupt(x86_saved_state_t *);
91447636 A	36
91447636 A	37
1c79356b A	38	struct i386_interrupt_handler {
	39	IOInterruptHandler handler;
	40	void *nub;
	41	void *target;
	42	void *refCon;
	43	};
	44
	45	typedef struct i386_interrupt_handler i386_interrupt_handler_t;
	46
	47	i386_interrupt_handler_t PE_interrupt_handler;
	48
55e303ae A	49
55e303ae A	50
1c79356b	51	void
89b3af67	52	PE_incoming_interrupt(x86_saved_state_t *state)
1c79356b	53	{
1c79356b	54	i386_interrupt_handler_t *vector;
89b3af67 A	55	uint64_t rip;
	56	int interrupt;
	57	boolean_t user_mode = FALSE;
	58
	59	if (is_saved_state64(state) == TRUE) {
	60	x86_saved_state64_t *state64;
	61
	62	state64 = saved_state64(state);
	63	rip = state64->isf.rip;
	64	interrupt = state64->isf.trapno;
	65	user_mode = TRUE;
	66	} else {
	67	x86_saved_state32_t *state32;
	68
	69	state32 = saved_state32(state);
	70	if (state32->cs & 0x03)
	71	user_mode = TRUE;
	72	rip = state32->eip;
	73	interrupt = state32->trapno;
	74	}
1c79356b	75
89b3af67 A	76	KERNEL_DEBUG_CONSTANT(
	77	MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) \| DBG_FUNC_START,
	78	interrupt, (unsigned int)rip, user_mode, 0, 0);
1c79356b	79
9bccf70c	80	vector = &PE_interrupt_handler;
55e303ae	81
91447636	82	if (!lapic_interrupt(interrupt, state)) {
89b3af67	83	vector->handler(vector->target, NULL, vector->nub, interrupt);
55e303ae	84	}
9bccf70c	85
89b3af67 A	86	KERNEL_DEBUG_CONSTANT(
	87	MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) \| DBG_FUNC_END,
	88	0, 0, 0, 0, 0);
1c79356b A	89	}
1c79356b A	90
91447636 A	91	void PE_install_interrupt_handler(void *nub,
91447636 A	92	__unused int source,
1c79356b A	93	void *target,
	94	IOInterruptHandler handler,
	95	void *refCon)
	96	{
	97	i386_interrupt_handler_t *vector;
	98
	99	vector = &PE_interrupt_handler;
	100
	101	/vector->source = source; IGNORED /
	102	vector->handler = handler;
	103	vector->nub = nub;
	104	vector->target = target;
	105	vector->refCon = refCon;
	106	}