freebsd-nq/sys/powerpc/include/frame.h
Pedro F. Giffuni 51369649b0 sys: further adoption of SPDX licensing ID tags.
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.
2017-11-20 19:43:44 +00:00

116 lines
3.8 KiB
C

/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* 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 TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*
* $NetBSD: frame.h,v 1.2 1999/01/10 10:13:15 tsubai Exp $
* $FreeBSD$
*/
#ifndef _MACHINE_FRAME_H_
#define _MACHINE_FRAME_H_
#include <sys/types.h>
/*
* We have to save all registers on every trap, because
* 1. user could attach this process every time
* 2. we must be able to restore all user registers in case of fork
* Actually, we do not save the fp registers on trap, since
* these are not used by the kernel. They are saved only when switching
* between processes using the FPU.
*
* Change ordering to cluster together these register_t's. XXX
*/
struct trapframe {
register_t fixreg[32];
register_t lr;
register_t cr;
register_t xer;
register_t ctr;
register_t srr0;
register_t srr1;
register_t exc;
register_t dar; /* DAR/DEAR filled in on DSI traps */
union {
struct {
/* dsisr only filled on a DSI trap */
register_t dsisr;
} aim;
struct {
register_t esr;
register_t dbcr0;
} booke;
} cpu;
};
/*
* FRAMELEN is the size of the stack region used by the low-level trap
* handler. It is the size of its data (trapframe) plus the callframe
* header (sizeof(struct callframe) - 3 register widths). It must also
* be 16-byte aligned.
*/
#define FRAMELEN roundup(sizeof(struct trapframe) + \
sizeof(struct callframe) - 3*sizeof(register_t), 16)
#define trapframe(td) ((td)->td_frame)
/*
* Call frame for PowerPC used during fork.
*/
#ifdef __powerpc64__
struct callframe {
register_t cf_dummy_fp; /* dummy frame pointer */
register_t cf_cr;
register_t cf_lr;
register_t cf_compiler;
register_t cf_linkeditor;
register_t cf_toc;
register_t cf_func;
register_t cf_arg0;
register_t cf_arg1;
register_t _padding; /* Maintain 16-byte alignment */
};
#else
struct callframe {
register_t cf_dummy_fp; /* dummy frame pointer */
register_t cf_lr; /* space for link register save */
register_t cf_func;
register_t cf_arg0;
register_t cf_arg1;
register_t _padding; /* Maintain 16-byte alignment */
};
#endif
/* Definitions for syscalls */
#define FIRSTARG 3 /* first arg in reg 3 */
#define NARGREG 8 /* 8 args in regs */
#endif /* _MACHINE_FRAME_H_ */