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 #ifdef __arm__ 30 #include <arm/pcb.h> 31 #else /* !__arm__ */ 32 33 #ifndef _MACHINE_PCB_H_ 34 #define _MACHINE_PCB_H_ 35 36 #ifndef LOCORE 37 38 #include <machine/debug_monitor.h> 39 #include <machine/vfp.h> 40 41 struct trapframe; 42 43 /* The first register in pcb_x is x19 */ 44 #define PCB_X_START 19 45 46 #define PCB_X19 0 47 #define PCB_X20 1 48 #define PCB_FP 10 49 #define PCB_LR 11 50 51 struct pcb { 52 uint64_t pcb_x[12]; 53 /* These two need to be in order as we access them together */ 54 uint64_t pcb_sp; 55 uint64_t pcb_tpidr_el0; 56 uint64_t pcb_tpidrro_el0; 57 58 /* Fault handler, the error value is passed in x0 */ 59 vm_offset_t pcb_onfault; 60 61 u_int pcb_flags; 62 #define PCB_SINGLE_STEP_SHIFT 0 63 #define PCB_SINGLE_STEP (1 << PCB_SINGLE_STEP_SHIFT) 64 uint32_t pcb_pad1; 65 66 struct vfpstate *pcb_fpusaved; 67 int pcb_fpflags; 68 #define PCB_FP_STARTED 0x00000001 69 #define PCB_FP_KERN 0x40000000 70 #define PCB_FP_NOSAVE 0x80000000 71 /* The bits passed to userspace in get_fpcontext */ 72 #define PCB_FP_USERMASK (PCB_FP_STARTED) 73 u_int pcb_vfpcpu; /* Last cpu this thread ran VFP code */ 74 uint64_t pcb_reserved[5]; 75 76 /* 77 * The userspace VFP state. The pcb_fpusaved pointer will point to 78 * this unless the kernel has allocated a VFP context. 79 * Place last to simplify the asm to access the rest if the struct. 80 */ 81 struct vfpstate pcb_fpustate; 82 83 struct debug_monitor_state pcb_dbg_regs; 84 }; 85 86 #ifdef _KERNEL 87 void makectx(struct trapframe *tf, struct pcb *pcb); 88 int savectx(struct pcb *pcb) __returns_twice; 89 #endif 90 91 #endif /* !LOCORE */ 92 93 #endif /* !_MACHINE_PCB_H_ */ 94 95 #endif /* !__arm__ */ 96