51369649b0
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
144 lines
4.7 KiB
C
144 lines
4.7 KiB
C
/* $OpenBSD: pcb.h,v 1.3 1998/09/15 10:50:12 pefo Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah Hdr: pcb.h 1.13 89/04/23
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* from: @(#)pcb.h 8.1 (Berkeley) 6/10/93
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* JNPR: pcb.h,v 1.2 2006/08/07 11:51:17 katta
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PCB_H_
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#define _MACHINE_PCB_H_
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/*
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* used by switch.S
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*/
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#define PCB_REG_S0 0
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#define PCB_REG_S1 1
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#define PCB_REG_S2 2
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#define PCB_REG_S3 3
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#define PCB_REG_S4 4
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#define PCB_REG_S5 5
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#define PCB_REG_S6 6
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#define PCB_REG_S7 7
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#define PCB_REG_SP 8
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#define PCB_REG_S8 9
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#define PCB_REG_RA 10
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#define PCB_REG_SR 11
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#define PCB_REG_GP 12
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#define PCB_REG_PC 13
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/*
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* Call ast if required
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*
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* XXX Do we really need to disable interrupts?
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*/
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#define DO_AST \
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44: \
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mfc0 t0, MIPS_COP_0_STATUS ;\
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and a0, t0, MIPS_SR_INT_IE ;\
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xor t0, a0, t0 ;\
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mtc0 t0, MIPS_COP_0_STATUS ;\
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COP0_SYNC ;\
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GET_CPU_PCPU(s1) ;\
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PTR_L s3, PC_CURPCB(s1) ;\
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PTR_L s1, PC_CURTHREAD(s1) ;\
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lw s2, TD_FLAGS(s1) ;\
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li s0, TDF_ASTPENDING | TDF_NEEDRESCHED;\
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and s2, s0 ;\
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mfc0 t0, MIPS_COP_0_STATUS ;\
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or t0, a0, t0 ;\
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mtc0 t0, MIPS_COP_0_STATUS ;\
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COP0_SYNC ;\
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beq s2, zero, 4f ;\
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nop ;\
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PTR_LA s0, _C_LABEL(ast) ;\
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jalr s0 ;\
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PTR_ADDU a0, s3, U_PCB_REGS ;\
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j 44b ;\
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nop ;\
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4:
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#define SAVE_U_PCB_REG(reg, offs, base) \
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REG_S reg, U_PCB_REGS + (SZREG * offs) (base)
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#define RESTORE_U_PCB_REG(reg, offs, base) \
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REG_L reg, U_PCB_REGS + (SZREG * offs) (base)
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#define SAVE_U_PCB_FPREG(reg, offs, base) \
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FP_S reg, U_PCB_FPREGS + (SZFPREG * offs) (base)
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#define RESTORE_U_PCB_FPREG(reg, offs, base) \
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FP_L reg, U_PCB_FPREGS + (SZFPREG * offs) (base)
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#define SAVE_U_PCB_FPSR(reg, offs, base) \
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REG_S reg, U_PCB_FPREGS + (SZFPREG * offs) (base)
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#define RESTORE_U_PCB_FPSR(reg, offs, base) \
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REG_L reg, U_PCB_FPREGS + (SZFPREG * offs) (base)
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#define SAVE_U_PCB_CONTEXT(reg, offs, base) \
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REG_S reg, U_PCB_CONTEXT + (SZREG * offs) (base)
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#define RESTORE_U_PCB_CONTEXT(reg, offs, base) \
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REG_L reg, U_PCB_CONTEXT + (SZREG * offs) (base)
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#ifndef LOCORE
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#include <machine/frame.h>
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/*
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* MIPS process control block
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*/
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struct pcb
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{
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struct trapframe pcb_regs; /* saved CPU and registers */
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__register_t pcb_context[14]; /* kernel context for resume */
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void *pcb_onfault; /* for copyin/copyout faults */
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register_t pcb_tpc;
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};
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#ifdef _KERNEL
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extern struct pcb *curpcb; /* the current running pcb */
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void makectx(struct trapframe *, struct pcb *);
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int savectx(struct pcb *) __returns_twice;
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#endif
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#endif
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#endif /* !_MACHINE_PCB_H_ */
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