114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/*-
|
|
* 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_ */
|