X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/de355530ae67247cbd0da700edb3a2a1dae884c2..813fb2f63a553c957e917ede5f119b021d6ce391:/osfmk/mach/i386/syscall_sw.h diff --git a/osfmk/mach/i386/syscall_sw.h b/osfmk/mach/i386/syscall_sw.h index 16104a874..abef968a7 100644 --- 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, - * 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@ */ -/* - * 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 @@ -135,34 +53,118 @@ * 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 -#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 */