[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(__ppc__) || defined(__ppc64__)

#include <architecture/ppc/mode_independent_asm.h>

/* From rhapsody kernel mach/ppc/syscall_sw.h */
#define	kernel_trap_args_0
#define	kernel_trap_args_1
#define	kernel_trap_args_2
#define	kernel_trap_args_3
#define	kernel_trap_args_4
#define	kernel_trap_args_5
#define	kernel_trap_args_6
#define	kernel_trap_args_7
#define	kernel_trap_args_8
/* End of rhapsody kernel mach/ppc/syscall_sw.h */

/*
 * Macros.
 */

#define	SYSCALL(name, nargs)			\
	.globl	cerror				@\
    MI_ENTRY_POINT(_##name)     @\
	kernel_trap_args_##nargs    @\
	li	r0,SYS_##name			@\
	sc                          @\
	b	1f                      @\
	blr                         @\
1:	MI_BRANCH_EXTERNAL(cerror)


#define	SYSCALL_NONAME(name, nargs)		\
	.globl	cerror				@\
	kernel_trap_args_##nargs    @\
	li	r0,SYS_##name			@\
	sc                          @\
	b	1f                      @\
	b	2f                      @\
1:	MI_BRANCH_EXTERNAL(cerror)  @\
2:


#define	PSEUDO(pseudo, name, nargs)		\
    .private_extern  _##pseudo           @\
    .text                       @\
    .align  2                   @\
_##pseudo:                      @\
	SYSCALL_NONAME(name, nargs)

#define __SYSCALL(pseudo, name, nargs)	\
    PSEUDO(pseudo, name, nargs)	@\
    blr

#elif 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
	58	#if defined(__ppc__) \|\| defined(__ppc64__)
	59
	60	#include <architecture/ppc/mode_independent_asm.h>
	61
	62	/* From rhapsody kernel mach/ppc/syscall_sw.h */
	63	#define kernel_trap_args_0
	64	#define kernel_trap_args_1
65	#define kernel_trap_args_2
66	#define kernel_trap_args_3
67	#define kernel_trap_args_4
68	#define kernel_trap_args_5
69	#define kernel_trap_args_6
70	#define kernel_trap_args_7
71	#define kernel_trap_args_8
72	/* End of rhapsody kernel mach/ppc/syscall_sw.h */
73
74	/*
75	* Macros.
76	*/
77
78	#define SYSCALL(name, nargs) \
79	.globl cerror @\
80	MI_ENTRY_POINT(_##name) @\
81	kernel_trap_args_##nargs @\
82	li r0,SYS_##name @\
83	sc @\
84	b 1f @\
85	blr @\
86	1: MI_BRANCH_EXTERNAL(cerror)
87
88
89	#define SYSCALL_NONAME(name, nargs) \
90	.globl cerror @\
91	kernel_trap_args_##nargs @\
92	li r0,SYS_##name @\
93	sc @\
94	b 1f @\
95	b 2f @\
96	1: MI_BRANCH_EXTERNAL(cerror) @\
97	2:
98
99
100	#define PSEUDO(pseudo, name, nargs) \
101	.private_extern _##pseudo @\
102	.text @\
103	.align 2 @\
104	_##pseudo: @\
105	SYSCALL_NONAME(name, nargs)
106
107	#define __SYSCALL(pseudo, name, nargs) \
108	PSEUDO(pseudo, name, nargs) @\
109	blr
110
111	#elif defined(__i386__)
112
113	#include <architecture/i386/asm_help.h>
114	#include <mach/i386/syscall_sw.h>
115
116	/*
117	* We have two entry points. int's is used for syscalls which need to preserve
118	* %ecx across the call, or return a 64-bit value in %eax:%edx. sysenter is used
119	* for the majority of syscalls which just return a value in %eax.
120	*/
121
122	#define UNIX_SYSCALL_SYSENTER call __sysenter_trap
123	#define UNIX_SYSCALL(name, nargs) \
124	.globl cerror ;\
125	LEAF(_##name, 0) ;\
126	movl $ SYS_##name, %eax ;\
127	UNIX_SYSCALL_SYSENTER ;\
128	jnb 2f ;\
129	BRANCH_EXTERN(cerror) ;\
130	2:
131
132	#define UNIX_SYSCALL_INT(name, nargs) \
133	.globl cerror ;\
134	LEAF(_##name, 0) ;\
135	movl $ SYS_##name, %eax ;\
136	UNIX_SYSCALL_TRAP ;\
137	jnb 2f ;\
138	BRANCH_EXTERN(cerror) ;\
139	2:
140
4a3eedf9	141	#if defined(__SYSCALL_32BIT_ARG_BYTES) && ((__SYSCALL_32BIT_ARG_BYTES >= 4) && (__SYSCALL_32BIT_ARG_BYTES <= 20))
2d21ac55	142	#define UNIX_SYSCALL_NONAME(name, nargs) \
4a3eedf9	143	movl $(SYS_##name \| (__SYSCALL_32BIT_ARG_BYTES << I386_SYSCALL_ARG_BYTES_SHIFT)), %eax ;\
2d21ac55 A	144	UNIX_SYSCALL_SYSENTER ;\
	145	jnb 2f ;\
	146	BRANCH_EXTERN(cerror) ;\
	147	2:
4a3eedf9	148	#else /* __SYSCALL_32BIT_ARG_BYTES < 4 \|\| > 20 */
2d21ac55 A	149	#define UNIX_SYSCALL_NONAME(name, nargs) \
	150	.globl cerror ;\
	151	movl $ SYS_##name, %eax ;\
	152	UNIX_SYSCALL_SYSENTER ;\
	153	jnb 2f ;\
	154	BRANCH_EXTERN(cerror) ;\
	155	2:
	156	#endif
	157
	158	#define UNIX_SYSCALL_INT_NONAME(name, nargs) \
	159	.globl cerror ;\
	160	movl $ SYS_##name, %eax ;\
	161	UNIX_SYSCALL_TRAP ;\
	162	jnb 2f ;\
	163	BRANCH_EXTERN(cerror) ;\
	164	2:
	165
	166	#define PSEUDO(pseudo, name, nargs) \
	167	LEAF(_##pseudo, 0) ;\
	168	UNIX_SYSCALL_NONAME(name, nargs)
	169
	170	#define PSEUDO_INT(pseudo, name, nargs) \
	171	LEAF(_##pseudo, 0) ;\
	172	UNIX_SYSCALL_INT_NONAME(name, nargs)
	173
	174	#define __SYSCALL(pseudo, name, nargs) \
	175	PSEUDO(pseudo, name, nargs) ;\
	176	ret
	177
	178	#define __SYSCALL_INT(pseudo, name, nargs) \
	179	PSEUDO_INT(pseudo, name, nargs) ;\
	180	ret
	181
	182	#elif defined(__x86_64__)
	183
	184	#include <architecture/i386/asm_help.h>
	185	#include <mach/i386/syscall_sw.h>
	186
	187	#define UNIX_SYSCALL_SYSCALL \
	188	movq %rcx, %r10 ;\
	189	syscall
	190
	191	#define UNIX_SYSCALL(name, nargs) \
	192	.globl cerror ;\
	193	LEAF(_##name, 0) ;\
	194	movl $ SYSCALL_CONSTRUCT_UNIX(SYS_##name), %eax ;\
	195	UNIX_SYSCALL_SYSCALL ;\
	196	jnb 2f ;\
	197	BRANCH_EXTERN(cerror) ;\
	198	2:
	199
	200	#define UNIX_SYSCALL_NONAME(name, nargs) \
	201	.globl cerror ;\
	202	movl $ SYSCALL_CONSTRUCT_UNIX(SYS_##name), %eax ;\
	203	UNIX_SYSCALL_SYSCALL ;\
	204	jnb 2f ;\
	205	BRANCH_EXTERN(cerror) ;\
	206	2:
	207
	208	#define PSEUDO(pseudo, name, nargs) \
	209	LEAF(_##pseudo, 0) ;\
	210	UNIX_SYSCALL_NONAME(name, nargs)
	211
	212	#define __SYSCALL(pseudo, name, nargs) \
213	PSEUDO(pseudo, name, nargs) ;\
214	ret
215
2d21ac55 A	216	#else
	217	#error Unsupported architecture
	218	#endif