2 * Copyright (c) 2001 Jake Burkholder.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #ifndef _MACHINE_PCB_H_
30 #define _MACHINE_PCB_H_
34 #include <machine/vfp.h>
42 /* These two need to be in order as we access them together */
44 uint64_t pcb_tpidr_el0;
45 vm_offset_t pcb_l0addr;
47 /* Fault handler, the error value is passed in x0 */
48 vm_offset_t pcb_onfault;
51 #define PCB_SINGLE_STEP_SHIFT 0
52 #define PCB_SINGLE_STEP (1 << PCB_SINGLE_STEP_SHIFT)
54 struct vfpstate *pcb_fpusaved;
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 */
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.
67 struct vfpstate pcb_fpustate;
71 void makectx(struct trapframe *tf, struct pcb *pcb);
72 int savectx(struct pcb *pcb) __returns_twice;
77 #endif /* !_MACHINE_PCB_H_ */