diff options
Diffstat (limited to 'sys/arm/include/pcb.h')
| -rw-r--r-- | sys/arm/include/pcb.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/sys/arm/include/pcb.h b/sys/arm/include/pcb.h new file mode 100644 index 000000000000..fd77544c22c1 --- /dev/null +++ b/sys/arm/include/pcb.h @@ -0,0 +1,92 @@ +/* $NetBSD: pcb.h,v 1.10 2003/10/13 21:46:39 scw Exp $ */ + +/*- + * SPDX-License-Identifier: BSD-4-Clause + * + * Copyright (c) 2001 Matt Thomas <matt@3am-software.com>. + * Copyright (c) 1994 Mark Brinicombe. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the RiscBSD team. + * 4. The name "RiscBSD" nor the name of the author may be used to + * endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _MACHINE_PCB_H_ +#define _MACHINE_PCB_H_ + +#include <machine/frame.h> +#include <machine/vfp.h> + +/* + * WARNING! + * Keep pcb_regs first for faster access in switch.S + */ +struct pcb { + struct switchframe pcb_regs; /* CPU state */ + u_int pcb_flags; +#define PCB_OWNFPU 0x00000001 +#define PCB_NOALIGNFLT 0x00000002 + caddr_t pcb_onfault; /* On fault handler */ + vm_offset_t pcb_pagedir; /* TTB0 value */ + /* + * XXX: + * Variables pcb_pl1vec, pcb_l1vec, pcb_dacr are used solely + * by old PMAP. Keep them here for PCB binary compatibility + * between old and new PMAP. + */ + uint32_t *pcb_pl1vec; /* PTR to vector_base L1 entry*/ + uint32_t pcb_l1vec; /* Value to stuff on ctx sw */ + u_int pcb_dacr; /* Domain Access Control Reg */ + + struct vfp_state pcb_vfpstate; /* VP/NEON state */ + u_int pcb_vfpcpu; /* VP/NEON last cpu */ +#define PCB_FP_STARTED 0x01 +#define PCB_FP_KERN 0x02 +#define PCB_FP_NOSAVE 0x04 + struct vfp_state *pcb_vfpsaved; /* VP/NEON state */ + int pcb_fpflags; +} __aligned(8); /* + * We need the PCB to be aligned on 8 bytes, as we may + * access it using ldrd/strd, and ARM ABI require it + * to by aligned on 8 bytes. + */ + +/* + * No additional data for core dumps. + */ +struct md_coredump { + int md_empty; +}; + +void makectx(struct trapframe *tf, struct pcb *pcb); + +#ifdef _KERNEL + +void savectx(struct pcb *) __returns_twice; +#endif /* _KERNEL */ + +#endif /* !_MACHINE_PCB_H_ */ |