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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_MACHPCB_H 28 #define _SYS_MACHPCB_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/stack.h> 33 #include <sys/regset.h> 34 #include <v9/sys/privregs.h> 35 #if defined(__lint) 36 #include <sys/thread.h> 37 #endif /* __lint */ 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 /* 44 * This file is machine dependent. 45 */ 46 47 /* 48 * Machine dependent per-thread data. 49 */ 50 #define MAXWIN 8 /* max # of windows currently supported */ 51 52 /* 53 * The system actually supports one more than the above number. 54 * There is always one window reserved for trap handlers that 55 * never has to be saved into the pcb struct. 56 */ 57 58 /* 59 * Distance from beginning of thread stack (t_stk) to saved regs struct. 60 */ 61 #define REGOFF SA(MINFRAME) 62 63 #ifndef _ASM 64 65 /* 66 * The struct machpcb is always allocated stack aligned. 67 */ 68 typedef struct machpcb { 69 char mpcb_frame[REGOFF]; 70 struct regs mpcb_regs; /* user's saved registers */ 71 caddr_t mpcb_wbuf; /* pointer to wbuf */ 72 caddr_t mpcb_spbuf[MAXWIN]; /* sp's for each wbuf */ 73 struct rwindow mpcb_rwin[2]; /* windows used while doing watchpoints */ 74 caddr_t mpcb_rsp[2]; /* sp's for pcb_rwin[] */ 75 int mpcb_wbcnt; /* number of saved windows in pcb_wbuf */ 76 uint_t mpcb_wstate; /* per-lwp %wstate */ 77 kfpu_t *mpcb_fpu; /* fpu state */ 78 struct fq mpcb_fpu_q[MAXFPQ]; /* fpu exception queue */ 79 caddr_t mpcb_illexcaddr; /* address of last illegal instruction */ 80 uint_t mpcb_illexcinsn; /* last illegal instruction */ 81 int mpcb_flags; /* various state flags */ 82 int mpcb_wocnt; /* window overflow count */ 83 int mpcb_wucnt; /* window underflow count */ 84 kthread_t *mpcb_thread; /* associated thread */ 85 uint64_t mpcb_pa; /* pcb physical */ 86 uint64_t mpcb_wbuf_pa; /* pointer to wbuf - physical */ 87 } machpcb_t; 88 #endif /* ! _ASM */ 89 90 /* mpcb_flags */ 91 #define FP_TRAPPED 0x04 /* fp_traps call caused by fp queue */ 92 93 /* 94 * We can use lwp_regs to find the mpcb base. 95 */ 96 #ifndef _ASM 97 #define lwptompcb(lwp) ((struct machpcb *) \ 98 ((caddr_t)(lwp)->lwp_regs - REGOFF)) 99 #endif 100 101 #ifdef __cplusplus 102 } 103 #endif 104 105 #endif /* _SYS_MACHPCB_H */ 106