/*
* Copyright (c) 2000-2006 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
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*
* @APPLE_OSREFERENCE_LICENSE_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>
/*
* 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
#if defined(__i386__)
#ifndef KERNEL
/*
* Syscall entry macros for use in libc:
*/
#define UNIX_SYSCALL_TRAP \
int $(UNIX_INT)
#define MACHDEP_SYSCALL_TRAP \
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 ;\
call __sysenter_trap ;\
END(_##trap_name)
#endif /* !KERNEL */
#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 /* !KERNEL */
#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 I386_SYSCALL_CLASS_MASK SYSCALL_CLASS_MASK
#define I386_SYSCALL_ARG_BYTES_SHIFT (16)
#define I386_SYSCALL_ARG_DWORDS_SHIFT (I386_SYSCALL_ARG_BYTES_SHIFT + 2)
#define I386_SYSCALL_ARG_BYTES_NUM (64) /* Must be <= sizeof(uu_arg) */
#define I386_SYSCALL_ARG_DWORDS_MASK ((I386_SYSCALL_ARG_BYTES_NUM >> 2) -1)
#define I386_SYSCALL_ARG_BYTES_MASK (((I386_SYSCALL_ARG_BYTES_NUM -1)&~0x3) << I386_SYSCALL_ARG_BYTES_SHIFT)
#define I386_SYSCALL_NUMBER_MASK (0xFFFF)
#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 */
#define SYSCALL_CLASS_IPC 5 /* Mach IPC */
/* 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 */