[apple/xnu.git] / libsyscall / custom / SYS.h

/*
 * Copyright (c) 1999-2007 Apple 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@
 */
/* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved.
 *
 *	File:	SYS.h
 *
 *	Definition of the user side of the UNIX system call interface
 *	for M98K.
 *
 *	Errors are flagged by the location of the trap return (ie., which
 *	instruction is executed upon rfi):
 *
 *		SC PC + 4:	Error (typically branch to cerror())
 *		SC PC + 8:	Success
 *
 * HISTORY
 * 18-Nov-92	Ben Fathi (benf@next.com)
 *	Ported to m98k.
 *
 *  9-Jan-92	Peter King (king@next.com)
 *	Created.
 */

#include <sys/syscall.h>

#ifndef SYS_setquota
#define SYS_setquota	148
#endif
#ifndef SYS_quota
#define SYS_quota	149
#endif

#if defined(__i386__)

#include <architecture/i386/asm_help.h>
#include <mach/i386/syscall_sw.h>

/*
 * We have two entry points. int's is used for syscalls which need to preserve
 * %ecx across the call, or return a 64-bit value in %eax:%edx. sysenter is used
 * for the majority of syscalls which just return a value in %eax.
 */

#define UNIX_SYSCALL_SYSENTER		call __sysenter_trap
#define UNIX_SYSCALL(name, nargs)			\
	.globl	cerror					;\
LEAF(_##name, 0)					;\
	movl	$ SYS_##name, %eax			;\
	UNIX_SYSCALL_SYSENTER				;\
	jnb	2f					;\
	BRANCH_EXTERN(cerror)  				;\
2:

#define UNIX_SYSCALL_INT(name, nargs)			\
	.globl	cerror					;\
LEAF(_##name, 0)					;\
	movl	$ SYS_##name, %eax			;\
	UNIX_SYSCALL_TRAP				;\
	jnb	2f					;\
	BRANCH_EXTERN(cerror)  				;\
2:

#if defined(__SYSCALL_32BIT_ARG_BYTES) && ((__SYSCALL_32BIT_ARG_BYTES >= 4) && (__SYSCALL_32BIT_ARG_BYTES <= 20))
#define UNIX_SYSCALL_NONAME(name, nargs)			\
	movl	$(SYS_##name | (__SYSCALL_32BIT_ARG_BYTES << I386_SYSCALL_ARG_BYTES_SHIFT)), %eax		;\
	UNIX_SYSCALL_SYSENTER					;\
	jnb	2f						;\
	BRANCH_EXTERN(cerror)					;\
2:
#else /* __SYSCALL_32BIT_ARG_BYTES < 4 || > 20 */
#define UNIX_SYSCALL_NONAME(name, nargs)		\
	.globl	cerror					;\
	movl	$ SYS_##name, %eax			;\
	UNIX_SYSCALL_SYSENTER				;\
	jnb	2f					;\
	BRANCH_EXTERN(cerror)				;\
2:
#endif

#define UNIX_SYSCALL_INT_NONAME(name, nargs)		\
	.globl	cerror					;\
	movl	$ SYS_##name, %eax			;\
	UNIX_SYSCALL_TRAP				;\
	jnb	2f					;\
	BRANCH_EXTERN(cerror)  				;\
2:

#define PSEUDO(pseudo, name, nargs)			\
LEAF(pseudo, 0)					;\
	UNIX_SYSCALL_NONAME(name, nargs)

#define PSEUDO_INT(pseudo, name, nargs)			\
LEAF(pseudo, 0)					;\
	UNIX_SYSCALL_INT_NONAME(name, nargs)

#define __SYSCALL(pseudo, name, nargs)			\
	PSEUDO(pseudo, name, nargs)			;\
	ret

#define __SYSCALL_INT(pseudo, name, nargs)		\
	PSEUDO_INT(pseudo, name, nargs)			;\
	ret

#elif defined(__x86_64__)

#include <architecture/i386/asm_help.h>
#include <mach/i386/syscall_sw.h>

#define UNIX_SYSCALL_SYSCALL	\
	movq	%rcx, %r10		;\
	syscall

#define UNIX_SYSCALL(name, nargs)			\
	.globl	cerror					;\
LEAF(_##name, 0)					;\
	movl	$ SYSCALL_CONSTRUCT_UNIX(SYS_##name), %eax	;\
	UNIX_SYSCALL_SYSCALL				;\
	jnb	2f					;\
	BRANCH_EXTERN(cerror)  				;\
2:

#define UNIX_SYSCALL_NONAME(name, nargs)		\
	.globl	cerror					;\
	movl	$ SYSCALL_CONSTRUCT_UNIX(SYS_##name), %eax	;\
	UNIX_SYSCALL_SYSCALL				;\
	jnb	2f					;\
	BRANCH_EXTERN(cerror)  				;\
2:

#define PSEUDO(pseudo, name, nargs)			\
LEAF(pseudo, 0)					;\
	UNIX_SYSCALL_NONAME(name, nargs)

#define __SYSCALL(pseudo, name, nargs)			\
	PSEUDO(pseudo, name, nargs)			;\
	ret

#else
#error Unsupported architecture
#endif
Commit	Line	Data
2d21ac55 A	1	/*
	2	* Copyright (c) 1999-2007 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	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
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28	/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved.
	29	*
	30	* File: SYS.h
	31	*
	32	* Definition of the user side of the UNIX system call interface
	33	* for M98K.
	34	*
	35	* Errors are flagged by the location of the trap return (ie., which
	36	* instruction is executed upon rfi):
	37	*
	38	* SC PC + 4: Error (typically branch to cerror())
	39	* SC PC + 8: Success
	40	*
	41	* HISTORY
	42	* 18-Nov-92 Ben Fathi (benf@next.com)
	43	* Ported to m98k.
	44	*
	45	* 9-Jan-92 Peter King (king@next.com)
	46	* Created.
	47	*/
	48
	49	#include <sys/syscall.h>
	50
	51	#ifndef SYS_setquota
	52	#define SYS_setquota 148
	53	#endif
	54	#ifndef SYS_quota
	55	#define SYS_quota 149
	56	#endif
	57
6d2010ae	58	#if defined(__i386__)
2d21ac55 A	59
	60	#include <architecture/i386/asm_help.h>
	61	#include <mach/i386/syscall_sw.h>
	62
	63	/*
	64	* We have two entry points. int's is used for syscalls which need to preserve
	65	* %ecx across the call, or return a 64-bit value in %eax:%edx. sysenter is used
	66	* for the majority of syscalls which just return a value in %eax.
	67	*/
	68
	69	#define UNIX_SYSCALL_SYSENTER call __sysenter_trap
	70	#define UNIX_SYSCALL(name, nargs) \
	71	.globl cerror ;\
	72	LEAF(_##name, 0) ;\
	73	movl $ SYS_##name, %eax ;\
	74	UNIX_SYSCALL_SYSENTER ;\
	75	jnb 2f ;\
	76	BRANCH_EXTERN(cerror) ;\
	77	2:
	78
	79	#define UNIX_SYSCALL_INT(name, nargs) \
	80	.globl cerror ;\
	81	LEAF(_##name, 0) ;\
	82	movl $ SYS_##name, %eax ;\
	83	UNIX_SYSCALL_TRAP ;\
	84	jnb 2f ;\
	85	BRANCH_EXTERN(cerror) ;\
	86	2:
	87
4a3eedf9	88	#if defined(__SYSCALL_32BIT_ARG_BYTES) && ((__SYSCALL_32BIT_ARG_BYTES >= 4) && (__SYSCALL_32BIT_ARG_BYTES <= 20))
2d21ac55	89	#define UNIX_SYSCALL_NONAME(name, nargs) \
4a3eedf9	90	movl $(SYS_##name \| (__SYSCALL_32BIT_ARG_BYTES << I386_SYSCALL_ARG_BYTES_SHIFT)), %eax ;\
2d21ac55 A	91	UNIX_SYSCALL_SYSENTER ;\
	92	jnb 2f ;\
	93	BRANCH_EXTERN(cerror) ;\
	94	2:
4a3eedf9	95	#else /* __SYSCALL_32BIT_ARG_BYTES < 4 \|\| > 20 */
2d21ac55 A	96	#define UNIX_SYSCALL_NONAME(name, nargs) \
	97	.globl cerror ;\
	98	movl $ SYS_##name, %eax ;\
	99	UNIX_SYSCALL_SYSENTER ;\
	100	jnb 2f ;\
	101	BRANCH_EXTERN(cerror) ;\
	102	2:
	103	#endif
	104
	105	#define UNIX_SYSCALL_INT_NONAME(name, nargs) \
	106	.globl cerror ;\
	107	movl $ SYS_##name, %eax ;\
	108	UNIX_SYSCALL_TRAP ;\
	109	jnb 2f ;\
	110	BRANCH_EXTERN(cerror) ;\
	111	2:
	112
	113	#define PSEUDO(pseudo, name, nargs) \
6d2010ae	114	LEAF(pseudo, 0) ;\
2d21ac55 A	115	UNIX_SYSCALL_NONAME(name, nargs)
	116
	117	#define PSEUDO_INT(pseudo, name, nargs) \
6d2010ae	118	LEAF(pseudo, 0) ;\
2d21ac55 A	119	UNIX_SYSCALL_INT_NONAME(name, nargs)
	120
	121	#define __SYSCALL(pseudo, name, nargs) \
	122	PSEUDO(pseudo, name, nargs) ;\
	123	ret
	124
	125	#define __SYSCALL_INT(pseudo, name, nargs) \
	126	PSEUDO_INT(pseudo, name, nargs) ;\
	127	ret
	128
	129	#elif defined(__x86_64__)
	130
	131	#include <architecture/i386/asm_help.h>
	132	#include <mach/i386/syscall_sw.h>
	133
	134	#define UNIX_SYSCALL_SYSCALL \
	135	movq %rcx, %r10 ;\
	136	syscall
	137
	138	#define UNIX_SYSCALL(name, nargs) \
	139	.globl cerror ;\
	140	LEAF(_##name, 0) ;\
	141	movl $ SYSCALL_CONSTRUCT_UNIX(SYS_##name), %eax ;\
	142	UNIX_SYSCALL_SYSCALL ;\
	143	jnb 2f ;\
	144	BRANCH_EXTERN(cerror) ;\
	145	2:
	146
	147	#define UNIX_SYSCALL_NONAME(name, nargs) \
	148	.globl cerror ;\
	149	movl $ SYSCALL_CONSTRUCT_UNIX(SYS_##name), %eax ;\
	150	UNIX_SYSCALL_SYSCALL ;\
	151	jnb 2f ;\
	152	BRANCH_EXTERN(cerror) ;\
	153	2:
	154
	155	#define PSEUDO(pseudo, name, nargs) \
6d2010ae	156	LEAF(pseudo, 0) ;\
2d21ac55 A	157	UNIX_SYSCALL_NONAME(name, nargs)
	158
	159	#define __SYSCALL(pseudo, name, nargs) \
	160	PSEUDO(pseudo, name, nargs) ;\
	161	ret
	162
2d21ac55 A	163	#else
	164	#error Unsupported architecture
	165	#endif