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 27 #ifdef __arm__ 28 #include <arm/pcb.h> 29 #else /* !__arm__ */ 30 31 #ifndef _MACHINE_PCB_H_ 32 #define _MACHINE_PCB_H_ 33 34 #ifndef LOCORE 35 36 #include <machine/debug_monitor.h> 37 #include <machine/vfp.h> 38 39 struct trapframe; 40 41 /* The first register in pcb_x is x19 */ 42 #define PCB_X_START 19 43 44 #define PCB_X19 0 45 #define PCB_X20 1 46 #define PCB_FP 10 47 #define PCB_LR 11 48 49 struct pcb { 50 uint64_t pcb_x[12]; 51 /* These two need to be in order as we access them together */ 52 uint64_t pcb_sp; 53 uint64_t pcb_tpidr_el0; 54 uint64_t pcb_tpidrro_el0; 55 56 /* Fault handler, the error value is passed in x0 */ 57 vm_offset_t pcb_onfault; 58 59 u_int pcb_flags; 60 #define PCB_SINGLE_STEP_SHIFT 0 61 #define PCB_SINGLE_STEP (1 << PCB_SINGLE_STEP_SHIFT) 62 uint32_t pcb_pad1; 63 64 struct vfpstate *pcb_fpusaved; 65 int pcb_fpflags; 66 #define PCB_FP_STARTED 0x00000001 67 #define PCB_FP_KERN 0x40000000 68 #define PCB_FP_NOSAVE 0x80000000 69 /* The bits passed to userspace in get_fpcontext */ 70 #define PCB_FP_USERMASK (PCB_FP_STARTED) 71 u_int pcb_vfpcpu; /* Last cpu this thread ran VFP code */ 72 uint64_t pcb_reserved[5]; 73 74 /* 75 * The userspace VFP state. The pcb_fpusaved pointer will point to 76 * this unless the kernel has allocated a VFP context. 77 * Place last to simplify the asm to access the rest if the struct. 78 */ 79 struct vfpstate pcb_fpustate; 80 81 struct debug_monitor_state pcb_dbg_regs; 82 }; 83 84 #ifdef _KERNEL 85 void makectx(struct trapframe *tf, struct pcb *pcb); 86 int savectx(struct pcb *pcb) __returns_twice; 87 #endif 88 89 #endif /* !LOCORE */ 90 91 #endif /* !_MACHINE_PCB_H_ */ 92 93 #endif /* !__arm__ */ 94