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 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_PCB_H 28 #define _SYS_PCB_H 29 30 #include <sys/regset.h> 31 #include <sys/segments.h> 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 #ifndef _ASM 38 typedef struct fpu_ctx { 39 kfpu_t fpu_regs; /* kernel save area for FPU */ 40 uint_t fpu_flags; /* FPU state flags */ 41 } fpu_ctx_t; 42 43 typedef struct pcb { 44 fpu_ctx_t pcb_fpu; /* fpu state */ 45 uint_t pcb_flags; /* state flags; cleared on fork */ 46 greg_t pcb_drstat; /* status debug register (%dr6) */ 47 unsigned char pcb_instr; /* /proc: instruction at stop */ 48 #if defined(__amd64) 49 unsigned char pcb_rupdate; /* new register values in pcb -> regs */ 50 uintptr_t pcb_fsbase; 51 uintptr_t pcb_gsbase; 52 selector_t pcb_ds; 53 selector_t pcb_es; 54 selector_t pcb_fs; 55 selector_t pcb_gs; 56 #endif /* __amd64 */ 57 user_desc_t pcb_fsdesc; /* private per-lwp %fs descriptors */ 58 user_desc_t pcb_gsdesc; /* private per-lwp %gs descriptors */ 59 } pcb_t; 60 61 #endif /* ! _ASM */ 62 63 /* pcb_flags */ 64 #define DEBUG_PENDING 0x02 /* single-step of lcall for a sys call */ 65 #define PRSTOP_CALLED 0x04 /* prstop() has been called for this lwp */ 66 #define INSTR_VALID 0x08 /* value in pcb_instr is valid (/proc) */ 67 #define NORMAL_STEP 0x10 /* normal debugger-requested single-step */ 68 #define WATCH_STEP 0x20 /* single-stepping in watchpoint emulation */ 69 #define CPC_OVERFLOW 0x40 /* performance counters overflowed */ 70 #define REQUEST_STEP 0x100 /* request pending to single-step this lwp */ 71 #define REQUEST_NOSTEP 0x200 /* request pending to disable single-step */ 72 #define ASYNC_HWERR 0x400 /* hardware error has corrupted context */ 73 74 /* fpu_flags */ 75 #define FPU_EN 0x1 /* flag signifying fpu in use */ 76 #define FPU_VALID 0x2 /* fpu_regs has valid fpu state */ 77 #define FPU_MODIFIED 0x4 /* fpu_regs is modified (/proc) */ 78 79 #define FPU_INVALID 0x0 /* fpu context is not in use */ 80 81 /* fpu_flags */ 82 83 #ifdef __cplusplus 84 } 85 #endif 86 87 #endif /* _SYS_PCB_H */ 88