xnu-1456.1.26.tar.gz

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

diff --git a/osfmk/mach/i386/syscall_sw.h b/osfmk/mach/i386/syscall_sw.h
index 16104a874f1136e48207b880615f0045303917dc..abef968a77077a48bdbe7ae429fd8a163e41aca0 100644 (file)
--- a/osfmk/mach/i386/syscall_sw.h
+++ b/osfmk/mach/i386/syscall_sw.h
@@ -1,115 +1,33 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @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,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * @OSF_COPYRIGHT@
  */
  */
 /*
  * @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
 /* 
  * Mach Operating System
  * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University


@@ -135,34 +53,118 @@
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */
  * 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>
 
 
 #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) ;\
 
 #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)
 
 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) ;\
 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)
 
 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 /* _MACH_I386_SYSCALL_SW_H_ */

+
+#endif /* PRIVATE */