1/* $OpenBSD: frame.h,v 1.8 2024/11/05 21:47:00 miod Exp $ */
2
3/*
4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
5 * Copyright (C) 1995, 1996 TooLs GmbH.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
21 *
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.
32 */
33#ifndef _POWERPC_FRAME_H_
34#define _POWERPC_FRAME_H_
35
36/*
37 * This is to ensure alignment of the stackpointer
38 */
39#define FRAMELEN roundup(sizeof(struct trapframe) + 8, 16)
40#define trapframe(p) ((struct trapframe *)((void *)(p)->p_addr + USPACE - FRAMELEN + 8))
41
42struct switchframe {
43 register_t sp;
44 int fill;
45 int user_sr;
46 int cr;
47 register_t fixreg2;
48 register_t fixreg[19]; /* R13-R31 */
49};
50
51struct clockframe {
52 register_t srr1;
53 register_t srr0;
54 int unused;
55 int depth;
56};
57
58/*
59 * Call frame for PowerPC used during fork.
60 */
61struct callframe {
62 register_t sp;
63 register_t lr;
64 register_t r30;
65 register_t r31;
66};
67
68struct sigframe {
69 int sf_signum;
70 siginfo_t *sf_sip;
71 struct sigcontext sf_sc;
72 siginfo_t sf_si;
73};
74
75struct fpsig {
76 double f[14]; /* f0 - f13 are volatile */
77 double fpscr;
78};
79#endif /* _POWERPC_FRAME_H_ */