pcb.h

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    1 /*-
    2  * Copyright (c) 2001 Jake Burkholder.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD$
   27  */
   28 
   29 #ifndef _MACHINE_PCB_H_
   30 #define _MACHINE_PCB_H_
   31 
   32 #ifndef LOCORE
   33 
   34 #include <machine/debug_monitor.h>
   35 #include <machine/vfp.h>
   36 
   37 struct trapframe;
   38 
   39 struct pcb {
   40         uint64_t        pcb_x[30];
   41         uint64_t        pcb_lr;
   42         uint64_t        _reserved;      /* Was pcb_pc */
   43         /* These two need to be in order as we access them together */
   44         uint64_t        pcb_sp;
   45         uint64_t        pcb_tpidr_el0;
   46         uint64_t        pcb_tpidrro_el0;
   47 
   48         /* Fault handler, the error value is passed in x0 */
   49         vm_offset_t     pcb_onfault;
   50 
   51         u_int           pcb_flags;
   52 #define PCB_SINGLE_STEP_SHIFT   0
   53 #define PCB_SINGLE_STEP         (1 << PCB_SINGLE_STEP_SHIFT)
   54 
   55         struct vfpstate *pcb_fpusaved;
   56         int             pcb_fpflags;
   57 #define PCB_FP_STARTED  0x00000001
   58 #define PCB_FP_KERN     0x40000000
   59 #define PCB_FP_NOSAVE   0x80000000
   60 /* The bits passed to userspace in get_fpcontext */
   61 #define PCB_FP_USERMASK (PCB_FP_STARTED)
   62         u_int           pcb_vfpcpu;     /* Last cpu this thread ran VFP code */
   63 
   64         /*
   65          * The userspace VFP state. The pcb_fpusaved pointer will point to
   66          * this unless the kernel has allocated a VFP context.
   67          * Place last to simplify the asm to access the rest if the struct.
   68          */
   69         struct vfpstate pcb_fpustate;
   70 
   71         struct debug_monitor_state pcb_dbg_regs;
   72 };
   73 
   74 #ifdef _KERNEL
   75 void    makectx(struct trapframe *tf, struct pcb *pcb);
   76 int     savectx(struct pcb *pcb) __returns_twice;
   77 #endif
   78 
   79 #endif /* !LOCORE */
   80 
   81 #endif /* !_MACHINE_PCB_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/arm64/include/pcb.h

FreeBSD/Linux Kernel Cross Reference
sys/arm64/include/pcb.h