1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 1990 by Sun Microsystems, Inc. 24*0Sstevel@tonic-gate */ 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate #ifndef _SYS_MACHPCB_H 27*0Sstevel@tonic-gate #define _SYS_MACHPCB_H 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #include <sys/stack.h> 32*0Sstevel@tonic-gate #include <sys/regset.h> 33*0Sstevel@tonic-gate #include <sys/privregs.h> 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #ifdef __cplusplus 36*0Sstevel@tonic-gate extern "C" { 37*0Sstevel@tonic-gate #endif 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate /* 40*0Sstevel@tonic-gate * This file is machine dependent. 41*0Sstevel@tonic-gate */ 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate /* 44*0Sstevel@tonic-gate * Machine dependent per-thread data. 45*0Sstevel@tonic-gate */ 46*0Sstevel@tonic-gate #define MAXWIN 8 /* max # of windows currently supported */ 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate /* 49*0Sstevel@tonic-gate * The system actually supports one more than the above number. 50*0Sstevel@tonic-gate * There is always one window reserved for trap handlers that 51*0Sstevel@tonic-gate * never has to be saved into the pcb struct. 52*0Sstevel@tonic-gate */ 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate /* 55*0Sstevel@tonic-gate * Distance from beginning of thread stack (t_stk) to saved regs struct. 56*0Sstevel@tonic-gate */ 57*0Sstevel@tonic-gate #define REGOFF MINFRAME 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #ifndef _ASM 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate /* 62*0Sstevel@tonic-gate * The struct machpcb is always allocated stack aligned. 63*0Sstevel@tonic-gate */ 64*0Sstevel@tonic-gate typedef struct machpcb { 65*0Sstevel@tonic-gate char mpcb_frame[REGOFF]; 66*0Sstevel@tonic-gate struct regs mpcb_regs; /* user's saved registers */ 67*0Sstevel@tonic-gate struct rwindow mpcb_wbuf[MAXWIN]; /* user window save buffer */ 68*0Sstevel@tonic-gate caddr_t mpcb_spbuf[MAXWIN]; /* sp's for each wbuf */ 69*0Sstevel@tonic-gate struct rwindow mpcb_rwin[2]; /* windows used while doing watchpoints */ 70*0Sstevel@tonic-gate caddr_t mpcb_rsp[2]; /* sp's for pcb_rwin[] */ 71*0Sstevel@tonic-gate int mpcb_uwm; /* user window mask */ 72*0Sstevel@tonic-gate int mpcb_swm; /* shared user/kernel window mask */ 73*0Sstevel@tonic-gate int mpcb_wbcnt; /* number of saved windows in pcb_wbuf */ 74*0Sstevel@tonic-gate struct fpu mpcb_fpu; /* fpu state */ 75*0Sstevel@tonic-gate struct fq mpcb_fpu_q[MAXFPQ]; /* fpu exception queue */ 76*0Sstevel@tonic-gate int mpcb_flags; /* various state flags */ 77*0Sstevel@tonic-gate int mpcb_wocnt; /* window overflow count */ 78*0Sstevel@tonic-gate int mpcb_wucnt; /* window underflow count */ 79*0Sstevel@tonic-gate kthread_t *mpcb_thread; /* associated thread */ 80*0Sstevel@tonic-gate } machpcb_t; 81*0Sstevel@tonic-gate #endif /* ! _ASM */ 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate /* mpcb_flags */ 84*0Sstevel@tonic-gate #define CLEAN_WINDOWS 0x01 /* keep user regs clean */ 85*0Sstevel@tonic-gate #define FP_TRAPPED 0x02 /* fp_traps call caused by fp queue */ 86*0Sstevel@tonic-gate #define GOTO_SYS_RTT 0x04 /* return from syscall via sys_rtt */ 87*0Sstevel@tonic-gate 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate /* 90*0Sstevel@tonic-gate * We can use lwp_regs to find the mpcb base. 91*0Sstevel@tonic-gate */ 92*0Sstevel@tonic-gate #ifndef _ASM 93*0Sstevel@tonic-gate #define lwptompcb(lwp) ((struct machpcb *) \ 94*0Sstevel@tonic-gate ((caddr_t)(lwp)->lwp_regs - REGOFF)) 95*0Sstevel@tonic-gate #endif 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate #ifdef __cplusplus 98*0Sstevel@tonic-gate } 99*0Sstevel@tonic-gate #endif 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate #endif /* _SYS_MACHPCB_H */ 102