1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_MACHPCB_H 27 #define _SYS_MACHPCB_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/stack.h> 32 #include <sys/regset.h> 33 #include <v9/sys/privregs.h> 34 #if defined(__lint) 35 #include <sys/thread.h> 36 #endif /* __lint */ 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /* 43 * This file is machine dependent. 44 */ 45 46 /* 47 * Machine dependent per-thread data. 48 */ 49 #define MAXWIN 8 /* max # of windows currently supported */ 50 51 /* 52 * The system actually supports one more than the above number. 53 * There is always one window reserved for trap handlers that 54 * never has to be saved into the pcb struct. 55 */ 56 57 /* 58 * Distance from beginning of thread stack (t_stk) to saved regs struct. 59 */ 60 #define REGOFF SA(MINFRAME) 61 62 #ifndef _ASM 63 64 /* 65 * The struct machpcb is always allocated stack aligned. 66 */ 67 typedef struct machpcb { 68 char mpcb_frame[REGOFF]; 69 struct regs mpcb_regs; /* user's saved registers */ 70 caddr_t mpcb_wbuf; /* pointer to wbuf */ 71 caddr_t mpcb_spbuf[MAXWIN]; /* sp's for each wbuf */ 72 struct rwindow mpcb_rwin[2]; /* windows used while doing watchpoints */ 73 caddr_t mpcb_rsp[2]; /* sp's for pcb_rwin[] */ 74 int mpcb_wbcnt; /* number of saved windows in pcb_wbuf */ 75 uint_t mpcb_wstate; /* per-lwp %wstate */ 76 kfpu_t *mpcb_fpu; /* fpu state */ 77 struct fq mpcb_fpu_q[MAXFPQ]; /* fpu exception queue */ 78 caddr_t mpcb_illexcaddr; /* address of last illegal instruction */ 79 uint_t mpcb_illexcinsn; /* last illegal instruction */ 80 int mpcb_flags; /* various state flags */ 81 int mpcb_wocnt; /* window overflow count */ 82 int mpcb_wucnt; /* window underflow count */ 83 kthread_t *mpcb_thread; /* associated thread */ 84 uint64_t mpcb_pa; /* pcb physical */ 85 uint64_t mpcb_wbuf_pa; /* pointer to wbuf - physical */ 86 } machpcb_t; 87 #endif /* ! _ASM */ 88 89 /* mpcb_flags */ 90 #define FP_TRAPPED 0x04 /* fp_traps call caused by fp queue */ 91 92 /* 93 * We can use lwp_regs to find the mpcb base. 94 */ 95 #ifndef _ASM 96 #define lwptompcb(lwp) ((struct machpcb *) \ 97 ((caddr_t)(lwp)->lwp_regs - REGOFF)) 98 #endif 99 100 #ifndef _ASM 101 struct kmem_cache; 102 extern struct kmem_cache *wbuf32_cache; 103 extern struct kmem_cache *wbuf64_cache; 104 #endif 105 106 #ifdef __cplusplus 107 } 108 #endif 109 110 #endif /* _SYS_MACHPCB_H */ 111