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 0x01 58 #define PCB_FP_KERN 0x02 59 #define PCB_FP_NOSAVE 0x04 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_ */ 82