X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/e5568f75972dfc723778653c11cb6b4dc825716a..490019cf9519204c5fb36b2fba54ceb983bb6b72:/osfmk/kern/xpr.c diff --git a/osfmk/kern/xpr.c b/osfmk/kern/xpr.c index 2a8d85f3f..8fbaca22d 100644 --- a/osfmk/kern/xpr.c +++ b/osfmk/kern/xpr.c @@ -1,201 +1,33 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2005 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 21:05:32 wsanchez - * Import of Mac OS X kernel (~semeria) - * - * Revision 1.1.1.1 1998/03/07 02:25:57 wsanchez - * Import of OSF Mach kernel (~mburg) - * - * Revision 1.2.46.1 1997/09/22 17:41:21 barbou - * MP+RT: protect cpu_number() usage against preemption. - * [97/09/16 barbou] - * - * Revision 1.2.25.5 1996/07/31 09:56:06 paire - * Merged with nmk20b7_shared (1.2.41.1) - * [96/06/10 paire] - * - * Revision 1.2.41.1 1996/04/15 14:35:12 bernadat - * Keep interrupts disabled while accessing XPR_TIMESTAMP. - * [96/04/12 bernadat] - * - * Revision 1.2.25.4 1995/02/24 15:22:42 alanl - * DIPC: Merge from nmk17b2 to nmk18b8. - * Notes: Restore portable locks package, derived from nmk17b2. - * [95/02/07 alanl] - * - * Revision 1.2.28.3 1994/12/09 22:25:16 dwm - * mk6 CR801 - merge up from nmk18b4 to nmk18b7 - * * Rev 1.2.25.2 1994/10/21 18:30:41 joe - * Added ETAP support - * [1994/12/09 21:10:59 dwm] - * - * Revision 1.2.28.2 1994/11/10 06:15:29 dwm - * mk6 CR764 - s/spinlock/simple_lock/ (name change only) - * [1994/11/10 05:58:48 dwm] - * - * Revision 1.2.28.1 1994/11/04 10:10:56 dwm - * mk6 CR668 - 1.3b26 merge - * * Revision 1.2.5.7 1994/05/06 18:54:13 tmt - * Merge in DEC Alpha changes to osc1.3b19. - * include - * 64 bit cleanup. - * * End1.3merge - * [1994/11/04 09:39:17 dwm] - * - * Revision 1.2.25.1 1994/09/23 02:32:39 ezf - * change marker to not FREE - * [1994/09/22 21:38:29 ezf] - * - * Revision 1.2.22.1 1994/06/09 14:14:11 dswartz - * Preemption merge. - * [1994/06/09 14:08:38 dswartz] - * - * Revision 1.2.5.5 1993/08/12 20:16:51 bernard - * Last pass for ANSI prototypes - CR#9523 - * [1993/08/12 15:43:24 bernard] - * - * Revision 1.2.5.4 1993/08/02 17:26:05 rod - * ANSI prototypes: zap explicit include of machine/setjmp.h. CR #9523. - * [1993/08/01 13:36:31 rod] - * - * Revision 1.2.5.3 1993/07/27 18:09:05 rod - * Add ANSI prototypes. CR #9523. - * [1993/07/27 14:33:23 rod] - * - * Revision 1.2.5.2 1993/06/09 02:39:13 gm - * CR9176 - ANSI C violations: trailing tokens on CPP - * directives, extra semicolons after decl_ ..., asm keywords - * [1993/06/07 19:07:51 jeffc] - * - * Added to OSF/1 R1.3 from NMK15.0. - * [1993/06/02 21:15:13 jeffc] - * - * Revision 1.2 1993/04/19 16:31:21 devrcs - * Added void to fcns that still needed it. - * [93/02/05 bruel] - * - * Revision 1.1 1992/09/30 02:10:39 robert - * Initial revision - * - * $EndLog$ - */ -/* CMU_HIST */ -/* - * Revision 2.9.5.2 92/03/03 16:20:57 jeffreyh - * Fix Log. - * [92/02/24 13:24:44 jeffreyh] - * - * Revision 2.9.5.1 92/02/18 19:13:03 jeffreyh - * Added an xpr_search function to which you can give - * a selection function. - * [92/02/11 08:13:23 bernadat] - * - * Revision 2.9.4.1 92/02/13 18:53:47 jeffreyh - * Added an xpr_search function to which you can give - * a selection function. - * [92/02/11 08:13:23 bernadat] - * - * Revision 2.9.3.1 92/02/11 17:19:59 jeffreyh - * Added an xpr_search function to which you can give - * a selection function. - * [92/02/11 08:13:23 bernadat] - * - * Revision 2.9.2.1 92/02/11 08:13:23 bernadat - * Added an xpr_search function to which you can give - * a selection function. - * - * - * Revision 2.9 91/10/09 16:11:50 af - * Removed xpr_save. Modified xpr_dump to make it useful - * for dumping xpr buffers in user space tasks. - * [91/09/20 rpd] - * - * Turned on xprenable by default. xprbootstrap now preserves - * the original contents of the buffer if xprenable is off. - * [91/09/18 rpd] - * - * Revision 2.8 91/08/28 11:14:56 jsb - * Fixed xprbootstrap to zero the allocate memory. - * [91/08/18 rpd] - * - * Revision 2.7 91/05/18 14:34:37 rpd - * Added xprenable and other minor changes so that the xpr buffer - * may be examined after a spontaneous reboot. - * [91/05/03 rpd] - * Fixed the initialization check in xpr. - * Fixed xpr_dump. - * [91/04/02 rpd] - * - * Revision 2.6 91/05/14 16:50:09 mrt - * Correcting copyright - * - * Revision 2.5 91/03/16 14:53:24 rpd - * Updated for new kmem_alloc interface. - * [91/03/03 rpd] - * - * Revision 2.4 91/02/05 17:31:13 mrt - * Changed to new Mach copyright - * [91/02/01 16:21:17 mrt] - * - * Revision 2.3 90/09/09 14:33:04 rpd - * Use decl_simple_lock_data. - * [90/08/30 rpd] - * - * Revision 2.2 89/11/29 14:09:21 af - * Added xpr_dump() to print on console the content of the buffer, - * only valid for KDB usage. - * [89/11/12 af] - * - * MACH_KERNEL: include sys/cpu_number.h instead of machine/cpu.h. - * Clean up comments. - * [88/12/19 dbg] - * - * Revision 2.1 89/08/03 15:49:11 rwd - * Created. - * - * Revision 2.2 88/12/19 02:48:30 mwyoung - * Fix include file references. - * [88/11/22 02:17:01 mwyoung] - * - * Separate initialization into two phases. - * [88/11/22 01:13:11 mwyoung] - * - * 6-Jan-88 Michael Young (mwyoung) at Carnegie-Mellon University - * Eliminate use of arg6 in order to allow a more shapely event structure. - * - * 30-Dec-87 David Golub (dbg) at Carnegie-Mellon University - * Delinted. - * - * 7-Dec-87 Richard Sanzi (sanzi) at Carnegie-Mellon University - * Added xpr_save() routine. - * - */ -/* CMU_ENDHIST */ /* * Mach Operating System * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University @@ -221,16 +53,12 @@ * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ -#include /* * xpr silent tracing circular buffer. */ -#include - #include #include -#include #include #include #include @@ -257,12 +85,12 @@ struct xprbuf *xprlast; /* Pointer to end of circular buffer */ void xpr( - char *msg, - long arg1, - long arg2, - long arg3, - long arg4, - long arg5) + const char *msg, + long arg1, + long arg2, + long arg3, + long arg4, + long arg5) { spl_t s; register struct xprbuf *x; @@ -295,168 +123,3 @@ xpr( mp_enable_preemption(); } -void -xprbootstrap(void) -{ - vm_offset_t addr; - vm_size_t size; - kern_return_t kr; - - simple_lock_init(&xprlock, ETAP_MISC_XPR); - if (nxprbufs == 0) - return; /* assume XPR support not desired */ - - /* leave room at the end for a saved copy of xprptr */ - size = nxprbufs * sizeof(struct xprbuf) + sizeof xprptr; - - kr = kmem_alloc_wired(kernel_map, &addr, size); - if (kr != KERN_SUCCESS) - panic("xprbootstrap"); - - if (xprenable) { - /* - * If xprenable is set (the default) then we zero - * the buffer so xpr_dump doesn't encounter bad pointers. - * If xprenable isn't set, then we preserve - * the original contents of the buffer. This is useful - * if memory survives reboots, so xpr_dump can show - * the previous buffer contents. - */ - - (void) memset((void *) addr, 0, size); - } - - xprbase = (struct xprbuf *) addr; - xprlast = &xprbase[nxprbufs]; - xprptr = xprbase; /* setting xprptr enables tracing */ -} - -int xprinitial = 0; - -void -xprinit(void) -{ - xprflags |= xprinitial; -} - -#if MACH_KDB -#include - -/* - * Prototypes for functions called from the debugger - */ -void -xpr_dump( - struct xprbuf *base, - int nbufs); - -void -xpr_search( - int arg_index, - int value); - -extern jmp_buf_t *db_recover; - -/* - * Print current content of xpr buffers (KDB's sake) - * Use stack order to make it understandable. - * - * Called as "!xpr_dump" this dumps the kernel's xpr buffer. - * Called with arguments, it can dump xpr buffers in user tasks, - * assuming they use the same format as the kernel. - */ -void -xpr_dump( - struct xprbuf *base, - int nbufs) -{ - jmp_buf_t db_jmpbuf; - jmp_buf_t *prev; - struct xprbuf *last, *ptr; - register struct xprbuf *x; - int i; - spl_t s; - - if (base == 0) { - base = xprbase; - nbufs = nxprbufs; - } - - if (nbufs == 0) - return; - - if (base == xprbase) { - s = splhigh(); - simple_lock(&xprlock); - } - - last = base + nbufs; - ptr = * (struct xprbuf **) last; - - prev = db_recover; - if (_setjmp(db_recover = &db_jmpbuf) == 0) - for (x = ptr, i = 0; i < nbufs; i++) { - if (--x < base) - x = last - 1; - - if (x->msg == 0) - break; - - db_printf("<%d:%x:%x> ", x - base, x->cpuinfo, x->timestamp); - db_printf(x->msg, x->arg1,x->arg2,x->arg3,x->arg4,x->arg5); - } - db_recover = prev; - - if (base == xprbase) { - simple_unlock(&xprlock); - splx(s); - } -} - -/* - * dump xpr table with a selection criteria. - * argument number "arg_index" must equal "value" - */ - -void -xpr_search( - int arg_index, - int value) -{ - jmp_buf_t db_jmpbuf; - jmp_buf_t *prev; - register struct xprbuf *x; - spl_t s; - int n; - - if (!nxprbufs) - return; - - n = nxprbufs; - - s = splhigh(); - simple_lock(&xprlock); - - prev = db_recover; - if (_setjmp(db_recover = &db_jmpbuf) == 0) - for (x = *(struct xprbuf **)xprlast ; n--; ) { - if (--x < xprbase) - x = xprlast - 1; - - if (x->msg == 0) { - break; - } - - if (*((&x->arg1)+arg_index) != value) - continue; - - db_printf("<%d:%d:%x> ", x - xprbase, - x->cpuinfo, x->timestamp); - db_printf(x->msg, x->arg1,x->arg2,x->arg3,x->arg4,x->arg5); - } - db_recover = prev; - - simple_unlock(&xprlock); - splx(s); -} -#endif /* MACH_KDB */