2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5 * Copyright (C) 1995, 1996 TooLs GmbH.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by TooLs GmbH.
19 * 4. The name of TooLs GmbH may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 * $NetBSD: frame.h,v 1.2 1999/01/10 10:13:15 tsubai Exp $
37 #ifndef _MACHINE_FRAME_H_
38 #define _MACHINE_FRAME_H_
40 #include <sys/types.h>
43 * We have to save all registers on every trap, because
44 * 1. user could attach this process every time
45 * 2. we must be able to restore all user registers in case of fork
46 * Actually, we do not save the fp registers on trap, since
47 * these are not used by the kernel. They are saved only when switching
48 * between processes using the FPU.
50 * Change ordering to cluster together these register_t's. XXX
53 register_t fixreg[32];
61 register_t dar; /* DAR/DEAR filled in on DSI traps */
64 /* dsisr only filled on a DSI trap */
75 * FRAMELEN is the size of the stack region used by the low-level trap
76 * handler. It is the size of its data (trapframe) plus the callframe
77 * header (sizeof(struct callframe) - 3 register widths). It must also
80 #define FRAMELEN roundup(sizeof(struct trapframe) + \
81 sizeof(struct callframe) - 3*sizeof(register_t), 16)
82 #define trapframe(td) ((td)->td_frame)
85 * Call frame for PowerPC used during fork.
89 register_t cf_dummy_fp; /* dummy frame pointer */
92 register_t cf_compiler;
93 register_t cf_linkeditor;
98 register_t _padding; /* Maintain 16-byte alignment */
102 register_t cf_dummy_fp; /* dummy frame pointer */
103 register_t cf_lr; /* space for link register save */
107 register_t _padding; /* Maintain 16-byte alignment */
111 /* Definitions for syscalls */
112 #define FIRSTARG 3 /* first arg in reg 3 */
113 #define NARGREG 8 /* 8 args in regs */
115 #endif /* _MACHINE_FRAME_H_ */