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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/riscv/include/frame.h
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/*-

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 * Copyright (c) 2015 Ruslan Bukin <[email protected]>

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 * All rights reserved.

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 *

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 * Portions of this software were developed by SRI International and the

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 * University of Cambridge Computer Laboratory under DARPA/AFRL contract

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 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.

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 *

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 * Portions of this software were developed by the University of Cambridge

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 * Computer Laboratory as part of the CTSRD Project, with support from the

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 * UK Higher Education Innovation Fund (HEIF).

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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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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#ifndef _MACHINE_FRAME_H_

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#define	_MACHINE_FRAME_H_

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#ifndef LOCORE

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#include <sys/signal.h>

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#include <sys/ucontext.h>

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/*

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 * NOTE: keep this structure in sync with struct reg and struct mcontext.

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 */

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struct trapframe {

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	uint64_t tf_ra;

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	uint64_t tf_sp;

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	uint64_t tf_gp;

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	uint64_t tf_tp;

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	uint64_t tf_t[7];

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	uint64_t tf_s[12];

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	uint64_t tf_a[8];

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	uint64_t tf_sepc;

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	uint64_t tf_sstatus;

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	uint64_t tf_stval;

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	uint64_t tf_scause;

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};

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#ifdef _KERNEL

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#define	TF_SIZE	(roundup2(sizeof(struct trapframe), STACKALIGNBYTES + 1))

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#endif

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/*

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 * Signal frame. Pushed onto user stack before calling sigcode.

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 */

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struct sigframe {

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	siginfo_t	sf_si;	/* actual saved siginfo */

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	ucontext_t	sf_uc;	/* actual saved ucontext */

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};

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#ifdef _KERNEL

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/*

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 * Kernel frame. Reserved near the top of kernel stacks for saving kernel

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 * state while in userspace.

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 */

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struct kernframe {

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	register_t	kf_tp;

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};

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#endif

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#endif /* !LOCORE */

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/* Definitions for syscalls */

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#define	NARGREG		8				/* 8 args in regs */

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#endif /* !_MACHINE_FRAME_H_ */

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