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/vfp.h> 35 36 struct trapframe; 37 38 #define PCB_LR 30 39 struct pcb { 40 uint64_t pcb_x[31]; 41 uint64_t pcb_pc; 42 /* These two need to be in order as we access them together */ 43 uint64_t pcb_sp; 44 uint64_t pcb_tpidr_el0; 45 vm_offset_t pcb_l0addr; 46 47 /* Fault handler, the error value is passed in x0 */ 48 vm_offset_t pcb_onfault; 49 50 u_int pcb_flags; 51 #define PCB_SINGLE_STEP_SHIFT 0 52 #define PCB_SINGLE_STEP (1 << PCB_SINGLE_STEP_SHIFT) 53 54 struct vfpstate *pcb_fpusaved; 55 int pcb_fpflags; 56 #define PCB_FP_STARTED 0x01 57 #define PCB_FP_KERN 0x02 58 /* The bits passed to userspace in get_fpcontext */ 59 #define PCB_FP_USERMASK (PCB_FP_STARTED) 60 u_int pcb_vfpcpu; /* Last cpu this thread ran VFP code */ 61 62 /* 63 * The userspace VFP state. The pcb_fpusaved pointer will point to 64 * this unless the kernel has allocated a VFP context. 65 * Place last to simplify the asm to access the rest if the struct. 66 */ 67 struct vfpstate pcb_fpustate; 68 }; 69 70 #ifdef _KERNEL 71 void makectx(struct trapframe *tf, struct pcb *pcb); 72 int savectx(struct pcb *pcb) __returns_twice; 73 #endif 74 75 #endif /* !LOCORE */ 76 77 #endif /* !_MACHINE_PCB_H_ */ 78