/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
-/*
- * HISTORY
- *
- * Revision 1.1.1.1 1998/09/22 21:05:31 wsanchez
- * Import of Mac OS X kernel (~semeria)
- *
- * Revision 1.2 1998/04/29 17:36:36 mburg
- * MK7.3 merger
- *
- * Revision 1.2.22.1 1998/02/03 09:32:55 gdt
- * Merge up to MK7.3
- * [1998/02/03 09:17:02 gdt]
- *
- * Revision 1.2.20.1 1997/06/17 03:00:55 devrcs
- * RPC Enhancements.
- * Added new definition of the rpc_return_trap.
- * [1996/04/26 21:53:51 yfei]
- *
- * Revision 1.2.17.2 1996/02/16 00:07:27 yfei
- * Merged NSWC based RPC enhancements into MK7_MAIN.
- *
- * Revision 1.2.12.2 1994/09/23 02:37:42 ezf
- * change marker to not FREE
- * [1994/09/22 21:40:17 ezf]
- *
- * Revision 1.2.12.1 1994/08/26 20:48:44 watkins
- * Merge with rt2_shared.
- * [1994/08/26 18:38:55 watkins]
- *
- * Revision 1.2.9.1 1994/07/18 22:03:32 burke
- * Check-in for merge.
- * [1994/07/15 21:04:49 burke]
- *
- * Revision 1.2.7.3 1994/07/05 14:28:23 watkins
- * Merge with rpc.
- * [1994/07/05 14:27:30 watkins]
- *
- * Revision 1.2.6.1 1994/05/18 21:18:29 watkins
- * Add macro for rpc call gate.
- * [1994/05/18 21:16:19 watkins]
- *
- * Revision 1.2.2.2 1993/06/09 02:40:45 gm
- * Added to OSF/1 R1.3 from NMK15.0.
- * [1993/06/02 21:16:24 jeffc]
- *
- * Revision 1.2 1993/04/19 16:34:14 devrcs
- * Fixes for ANSI C
- * [1993/02/26 13:35:10 sp]
- *
- * Revision 1.1 1992/09/30 02:30:50 robert
- * Initial revision
- *
- * $EndLog$
- */
-/* CMU_HIST */
-/*
- * Revision 2.5 91/05/14 16:52:22 mrt
- * Correcting copyright
- *
- * Revision 2.4 91/02/05 17:32:17 mrt
- * Changed to new Mach copyright
- * [91/02/01 17:10:01 mrt]
- *
- * Revision 2.3 90/12/05 23:46:16 af
- * Made GNU preproc happy.
- *
- * Revision 2.2 90/05/03 15:48:01 dbg
- * Created.
- * [90/04/30 16:36:25 dbg]
- *
- * Revision 1.3.1.1 89/12/22 22:22:03 rvb
- * Use asm.h
- * [89/12/22 rvb]
- *
- * Revision 1.3 89/03/09 20:19:53 rpd
- * More cleanup.
- *
- * Revision 1.2 89/02/26 13:01:00 gm0w
- * Changes for cleanup.
- *
- * 31-Dec-88 Robert Baron (rvb) at Carnegie-Mellon University
- * Derived from MACH2.0 vax release.
- *
- * 1-Sep-86 Michael Young (mwyoung) at Carnegie-Mellon University
- * Created from mach_syscalls.h in the user library sources.
- *
- */
-/* CMU_ENDHIST */
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
* 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>
-#define MACHCALLSEL $0x07
-#define RPCCALLSEL $0x0f
+/*
+ * 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 ;\
- lcall MACHCALLSEL, $0 ;\
+ movl $##trap_number, %eax ;\
+ call __sysenter_trap ;\
END(_##trap_name)
-#define rpc_trap(trap_name,trap_number,number_args) \
-LEAF(_##trap_name,0) ;\
- movl $##trap_number,%eax; \
- lcall RPCCALLSEL, $0 ;\
-END(_##trap_name)
+#endif /* !KERNEL */
+
+#endif /* defined(__i386__) */
+
+#if defined(__x86_64__)
+
+#ifndef KERNEL
-#define rpc_return_trap(trap_name,trap_number,number_args) \
+#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) ;\
- movl %eax, %ecx; \
- movl $##trap_number,%eax; \
- lcall RPCCALLSEL, $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 */
projects / apple / xnu.git / blobdiff