[apple/xnu.git] / osfmk / mach / i386 / syscall_sw.h

/*
 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_OSREFERENCE_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_LICENSE_OSREFERENCE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */
/*
 */

#ifdef	PRIVATE

#ifndef	_MACH_I386_SYSCALL_SW_H_
#define _MACH_I386_SYSCALL_SW_H_

#include <architecture/i386/asm_help.h>

#if defined(__i386__)
/*
 * Software interrupt codes for 32-bit system call entry:
 */
#define UNIX_INT     0x80
#define MACH_INT     0x81
#define MACHDEP_INT  0x82
#define DIAG_INT     0x83

#ifndef KERNEL
/*
 * Syscall entry macros for use in libc:
 * [Note that the nop padding is temporary during 4/4 transition.]
 */
#define SYSENTER_PAD	nop;nop;
#define SYSCALL_PAD	nop;nop;nop;nop;nop;
#define UNIX_SYSCALL_TRAP	\
	SYSCALL_PAD		\
	int $(UNIX_INT)
#define MACHDEP_SYSCALL_TRAP	\
	SYSCALL_PAD		\
	int $(MACHDEP_INT)

/*
 * Macro to generate Mach call stubs in libc:
 */
#define kernel_trap(trap_name,trap_number,number_args) \
LEAF(_##trap_name,0) ;\
	movl	$##trap_number,%eax	;\
	int		$(MACH_INT)		;\
END(_##trap_name)

#endif
#endif /* defined(__i386__) */

#if defined(__x86_64__)

#ifndef KERNEL

#define UNIX_SYSCALL_TRAP	\
	syscall
#define MACHDEP_SYSCALL_TRAP	\
	syscall

/*
 * Macro to generate Mach call stubs in Libc.
 * Existing calls use negative numbers for Mach traps, so
 * until we change those and change the 32-bit kernel_trap
 * macro above, we negate those numbers here for the 64-bit
 * code path.
 */
#define kernel_trap(trap_name,trap_number,number_args) \
LEAF(_##trap_name,0) ;\
	movq	%rcx, %r10	;\
	movl	$ SYSCALL_CONSTRUCT_MACH(-##trap_number), %eax	;\
	syscall		;\
END(_##trap_name)

#endif
#endif /* defined(__x86_64__) */

/*
 * Syscall classes for 64-bit system call entry.
 * For 64-bit users, the 32-bit syscall number is partitioned
 * with the high-order bits representing the class and low-order
 * bits being the syscall number within that class.
 * The high-order 32-bits of the 64-bit syscall number are unused.
 * All system classes enter the kernel via the syscall instruction.
 *
 * These are not #ifdef'd for x86-64 because they might be used for
 * 32-bit someday and so the 64-bit comm page in a 32-bit kernel
 * can use them.
 */
#define SYSCALL_CLASS_SHIFT	24
#define SYSCALL_CLASS_MASK	(0xFF << SYSCALL_CLASS_SHIFT)
#define SYSCALL_NUMBER_MASK	(~SYSCALL_CLASS_MASK)

#define SYSCALL_CLASS_NONE	0	/* Invalid */
#define SYSCALL_CLASS_MACH	1	/* Mach */	
#define SYSCALL_CLASS_UNIX	2	/* Unix/BSD */
#define SYSCALL_CLASS_MDEP	3	/* Machine-dependent */
#define SYSCALL_CLASS_DIAG	4	/* Diagnostics */

/* Macros to simpllfy constructing syscall numbers. */
#define SYSCALL_CONSTRUCT_MACH(syscall_number) \
			((SYSCALL_CLASS_MACH << SYSCALL_CLASS_SHIFT) | \
			 (SYSCALL_NUMBER_MASK & (syscall_number)))
#define SYSCALL_CONSTRUCT_UNIX(syscall_number) \
			((SYSCALL_CLASS_UNIX << SYSCALL_CLASS_SHIFT) | \
			 (SYSCALL_NUMBER_MASK & (syscall_number)))
#define SYSCALL_CONSTRUCT_MDEP(syscall_number) \
			((SYSCALL_CLASS_MDEP << SYSCALL_CLASS_SHIFT) | \
			 (SYSCALL_NUMBER_MASK & (syscall_number)))
#define SYSCALL_CONSTRUCT_DIAG(syscall_number) \
			((SYSCALL_CLASS_DIAG << SYSCALL_CLASS_SHIFT) | \
			 (SYSCALL_NUMBER_MASK & (syscall_number)))

#endif	/* _MACH_I386_SYSCALL_SW_H_ */

#endif	/* PRIVATE */
Commit	Line	Data
1c79356b	1	/*
91447636	2	* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
1c79356b	3	*
8ad349bb	4	* @APPLE_LICENSE_OSREFERENCE_HEADER_START@
1c79356b	5	*
8ad349bb 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
	10	* License may not be used to create, or enable the creation or
	11	* redistribution of, unlawful or unlicensed copies of an Apple operating
	12	* system, or to circumvent, violate, or enable the circumvention or
	13	* violation of, any terms of an Apple operating system software license
	14	* agreement.
	15	*
	16	* Please obtain a copy of the License at
	17	* http://www.opensource.apple.com/apsl/ and read it before using this
	18	* file.
	19	*
	20	* The Original Code and all software distributed under the License are
	21	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	22	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	23	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	24	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	25	* Please see the License for the specific language governing rights and
	26	* limitations under the License.
	27	*
	28	* @APPLE_LICENSE_OSREFERENCE_HEADER_END@
1c79356b A	29	*/
	30	/*
	31	* @OSF_COPYRIGHT@
	32	*/
1c79356b A	33	/*
	34	* Mach Operating System
	35	* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
	36	* All Rights Reserved.
	37	*
	38	* Permission to use, copy, modify and distribute this software and its
	39	* documentation is hereby granted, provided that both the copyright
	40	* notice and this permission notice appear in all copies of the
	41	* software, derivative works or modified versions, and any portions
	42	* thereof, and that both notices appear in supporting documentation.
	43	*
	44	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	45	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	46	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	47	*
	48	* Carnegie Mellon requests users of this software to return to
	49	*
	50	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	51	* School of Computer Science
	52	* Carnegie Mellon University
	53	* Pittsburgh PA 15213-3890
	54	*
	55	* any improvements or extensions that they make and grant Carnegie Mellon
	56	* the rights to redistribute these changes.
	57	*/
	58	/*
	59	*/
	60
91447636 A	61	#ifdef PRIVATE
91447636 A	62
1c79356b A	63	#ifndef _MACH_I386_SYSCALL_SW_H_
	64	#define _MACH_I386_SYSCALL_SW_H_
	65
	66	#include <architecture/i386/asm_help.h>
	67
5d5c5d0d A	68	#if defined(__i386__)
	69	/*
	70	* Software interrupt codes for 32-bit system call entry:
	71	*/
	72	#define UNIX_INT 0x80
	73	#define MACH_INT 0x81
	74	#define MACHDEP_INT 0x82
	75	#define DIAG_INT 0x83
	76
	77	#ifndef KERNEL
	78	/*
	79	* Syscall entry macros for use in libc:
	80	* [Note that the nop padding is temporary during 4/4 transition.]
	81	*/
	82	#define SYSENTER_PAD nop;nop;
	83	#define SYSCALL_PAD nop;nop;nop;nop;nop;
	84	#define UNIX_SYSCALL_TRAP \
	85	SYSCALL_PAD \
	86	int $(UNIX_INT)
	87	#define MACHDEP_SYSCALL_TRAP \
	88	SYSCALL_PAD \
	89	int $(MACHDEP_INT)
	90
	91	/*
	92	* Macro to generate Mach call stubs in libc:
	93	*/
	94	#define kernel_trap(trap_name,trap_number,number_args) \
	95	LEAF(_##trap_name,0) ;\
	96	movl $##trap_number,%eax ;\
	97	int $(MACH_INT) ;\
	98	END(_##trap_name)
	99
	100	#endif
	101	#endif /* defined(__i386__) */
c0fea474	102
5d5c5d0d A	103	#if defined(__x86_64__)
	104
	105	#ifndef KERNEL
	106
	107	#define UNIX_SYSCALL_TRAP \
	108	syscall
	109	#define MACHDEP_SYSCALL_TRAP \
	110	syscall
	111
	112	/*
	113	* Macro to generate Mach call stubs in Libc.
	114	* Existing calls use negative numbers for Mach traps, so
	115	* until we change those and change the 32-bit kernel_trap
	116	* macro above, we negate those numbers here for the 64-bit
	117	* code path.
	118	*/
c0fea474 A	119	#define kernel_trap(trap_name,trap_number,number_args) \
c0fea474 A	120	LEAF(_##trap_name,0) ;\
5d5c5d0d A	121	movq %rcx, %r10 ;\
	122	movl $ SYSCALL_CONSTRUCT_MACH(-##trap_number), %eax ;\
	123	syscall ;\
c0fea474 A	124	END(_##trap_name)
c0fea474 A	125
5d5c5d0d A	126	#endif
	127	#endif /* defined(__x86_64__) */
	128
	129	/*
	130	* Syscall classes for 64-bit system call entry.
	131	* For 64-bit users, the 32-bit syscall number is partitioned
	132	* with the high-order bits representing the class and low-order
	133	* bits being the syscall number within that class.
	134	* The high-order 32-bits of the 64-bit syscall number are unused.
	135	* All system classes enter the kernel via the syscall instruction.
	136	*
	137	* These are not #ifdef'd for x86-64 because they might be used for
	138	* 32-bit someday and so the 64-bit comm page in a 32-bit kernel
	139	* can use them.
	140	*/
	141	#define SYSCALL_CLASS_SHIFT 24
	142	#define SYSCALL_CLASS_MASK (0xFF << SYSCALL_CLASS_SHIFT)
	143	#define SYSCALL_NUMBER_MASK (~SYSCALL_CLASS_MASK)
	144
	145	#define SYSCALL_CLASS_NONE 0 /* Invalid */
	146	#define SYSCALL_CLASS_MACH 1 /* Mach */
	147	#define SYSCALL_CLASS_UNIX 2 /* Unix/BSD */
	148	#define SYSCALL_CLASS_MDEP 3 /* Machine-dependent */
	149	#define SYSCALL_CLASS_DIAG 4 /* Diagnostics */
	150
	151	/* Macros to simpllfy constructing syscall numbers. */
	152	#define SYSCALL_CONSTRUCT_MACH(syscall_number) \
	153	((SYSCALL_CLASS_MACH << SYSCALL_CLASS_SHIFT) \| \
	154	(SYSCALL_NUMBER_MASK & (syscall_number)))
	155	#define SYSCALL_CONSTRUCT_UNIX(syscall_number) \
	156	((SYSCALL_CLASS_UNIX << SYSCALL_CLASS_SHIFT) \| \
	157	(SYSCALL_NUMBER_MASK & (syscall_number)))
	158	#define SYSCALL_CONSTRUCT_MDEP(syscall_number) \
	159	((SYSCALL_CLASS_MDEP << SYSCALL_CLASS_SHIFT) \| \
	160	(SYSCALL_NUMBER_MASK & (syscall_number)))
	161	#define SYSCALL_CONSTRUCT_DIAG(syscall_number) \
	162	((SYSCALL_CLASS_DIAG << SYSCALL_CLASS_SHIFT) \| \
	163	(SYSCALL_NUMBER_MASK & (syscall_number)))
	164
1c79356b	165	#endif /* _MACH_I386_SYSCALL_SW_H_ */
91447636 A	166
91447636 A	167	#endif /* PRIVATE */