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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2020 Joyent, Inc.
*/
#ifndef _SYS_PCB_H
#define _SYS_PCB_H
#include <sys/regset.h>
#include <sys/segments.h>
#ifndef _ASM
#include <sys/fp.h> /* kfpu_t */
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASM
typedef struct fpu_ctx {
kfpu_t fpu_regs; /* kernel save area for FPU */
uint64_t fpu_xsave_mask; /* xsave mask for FPU/SSE/AVX */
#if defined(__i386)
uint64_t fpu_padding; /* fix 32bit libmicro regression */
#endif
uint_t fpu_flags; /* FPU state flags */
} fpu_ctx_t;
typedef struct pcb {
fpu_ctx_t pcb_fpu; /* fpu state */
uint_t pcb_flags; /* state flags; cleared on fork */
greg_t pcb_drstat; /* status debug register (%dr6) */
unsigned char pcb_instr; /* /proc: instruction at stop */
unsigned char pcb_rupdate; /* new register values in pcb -> regs */
uintptr_t pcb_fsbase;
uintptr_t pcb_gsbase;
selector_t pcb_ds;
selector_t pcb_es;
selector_t pcb_fs;
selector_t pcb_gs;
user_desc_t pcb_fsdesc; /* private per-lwp %fs descriptors */
user_desc_t pcb_gsdesc; /* private per-lwp %gs descriptors */
} pcb_t;
#endif /* ! _ASM */
/* pcb_flags */
#define DEBUG_PENDING 0x02 /* single-step of lcall for a sys call */
#define PRSTOP_CALLED 0x04 /* prstop() has been called for this lwp */
#define INSTR_VALID 0x08 /* value in pcb_instr is valid (/proc) */
#define NORMAL_STEP 0x10 /* normal debugger-requested single-step */
#define WATCH_STEP 0x20 /* single-stepping in watchpoint emulation */
#define CPC_OVERFLOW 0x40 /* performance counters overflowed */
#define REQUEST_STEP 0x100 /* request pending to single-step this lwp */
#define REQUEST_NOSTEP 0x200 /* request pending to disable single-step */
#define ASYNC_HWERR 0x400 /* hardware error has corrupted context */
/* pcb_rupdate values */
#define PCB_UPDATE_SEGS 0x01 /* Update segment registers */
#define PCB_UPDATE_FPU 0x02 /* Update FPU registers */
#define PCB_SET_UPDATE_SEGS(pcb) ((pcb)->pcb_rupdate |= PCB_UPDATE_SEGS)
#define PCB_SET_UPDATE_FPU(pcb) ((pcb)->pcb_rupdate |= PCB_UPDATE_FPU)
#define PCB_NEED_UPDATE_SEGS(pcb) \
(((pcb)->pcb_rupdate & PCB_UPDATE_SEGS) != 0)
#define PCB_NEED_UPDATE_FPU(pcb) \
(((pcb)->pcb_rupdate & PCB_UPDATE_FPU) != 0)
#define PCB_NEED_UPDATE(pcb) \
(PCB_NEED_UPDATE_FPU(pcb) || PCB_NEED_UPDATE_SEGS(pcb))
#define PCB_CLEAR_UPDATE_SEGS(pcb) ((pcb)->pcb_rupdate &= ~PCB_UPDATE_SEGS)
#define PCB_CLEAR_UPDATE_FPU(pcb) ((pcb)->pcb_rupdate &= ~PCB_UPDATE_FPU)
/* fpu_flags */
#define FPU_EN 0x01 /* FPU in use (user or kernel) */
#define FPU_VALID 0x02 /* fpu_regs has valid fpu state */
#define FPU_MODIFIED 0x04 /* fpu_regs is modified (/proc) */
#define FPU_KERNEL 0x08 /* Kernel is using the FPU */
#define FPU_INVALID 0x0 /* fpu context is not in use */
/* fpu_flags */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_PCB_H */
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