1/*-
2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $NetBSD: frame.h,v 1.2 1999/01/10 10:13:15 tsubai Exp $
| 1/*-
2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $NetBSD: frame.h,v 1.2 1999/01/10 10:13:15 tsubai Exp $
|
33 */
34
35#ifndef _MACHINE_FRAME_H_
36#define _MACHINE_FRAME_H_
37
38#include <sys/types.h>
39
40/*
41 * We have to save all registers on every trap, because
42 * 1. user could attach this process every time
43 * 2. we must be able to restore all user registers in case of fork
44 * Actually, we do not save the fp registers on trap, since
45 * these are not used by the kernel. They are saved only when switching
46 * between processes using the FPU.
47 *
48 * Change ordering to cluster together these register_t's. XXX
49 */
50struct trapframe {
51 register_t fixreg[32];
52 register_t lr;
53 register_t cr;
54 register_t xer;
55 register_t ctr;
56 register_t srr0;
57 register_t srr1;
58 register_t exc;
59 register_t dar; /* DAR/DEAR filled in on DSI traps */
60 union {
61 struct {
62 /* dsisr only filled on a DSI trap */
63 register_t dsisr;
64 } aim;
65 struct {
66 register_t esr;
67 register_t dbcr0;
68 } booke;
69 } cpu;
70};
71
72/*
73 * FRAMELEN is the size of the stack region used by the low-level trap
74 * handler. It is the size of its data (trapframe) plus the callframe
75 * header (sizeof(struct callframe) - 3 register widths). It must also
76 * be 16-byte aligned.
77 */
78#define FRAMELEN roundup(sizeof(struct trapframe) + \
79 sizeof(struct callframe) - 3*sizeof(register_t), 16)
80#define trapframe(td) ((td)->td_frame)
81
82/*
83 * Call frame for PowerPC used during fork.
84 */
85#ifdef __powerpc64__
86struct callframe {
87 register_t cf_dummy_fp; /* dummy frame pointer */
88 register_t cf_cr;
89 register_t cf_lr;
90 register_t cf_compiler;
91 register_t cf_linkeditor;
92 register_t cf_toc;
93 register_t cf_func;
94 register_t cf_arg0;
95 register_t cf_arg1;
96 register_t _padding; /* Maintain 16-byte alignment */
97};
98#else
99struct callframe {
100 register_t cf_dummy_fp; /* dummy frame pointer */
101 register_t cf_lr; /* space for link register save */
102 register_t cf_func;
103 register_t cf_arg0;
104 register_t cf_arg1;
105 register_t _padding; /* Maintain 16-byte alignment */
106};
107#endif
108
109/* Definitions for syscalls */
110#define FIRSTARG 3 /* first arg in reg 3 */
111#define NARGREG 8 /* 8 args in regs */
| 33 */
34
35#ifndef _MACHINE_FRAME_H_
36#define _MACHINE_FRAME_H_
37
38#include <sys/types.h>
39
40/*
41 * We have to save all registers on every trap, because
42 * 1. user could attach this process every time
43 * 2. we must be able to restore all user registers in case of fork
44 * Actually, we do not save the fp registers on trap, since
45 * these are not used by the kernel. They are saved only when switching
46 * between processes using the FPU.
47 *
48 * Change ordering to cluster together these register_t's. XXX
49 */
50struct trapframe {
51 register_t fixreg[32];
52 register_t lr;
53 register_t cr;
54 register_t xer;
55 register_t ctr;
56 register_t srr0;
57 register_t srr1;
58 register_t exc;
59 register_t dar; /* DAR/DEAR filled in on DSI traps */
60 union {
61 struct {
62 /* dsisr only filled on a DSI trap */
63 register_t dsisr;
64 } aim;
65 struct {
66 register_t esr;
67 register_t dbcr0;
68 } booke;
69 } cpu;
70};
71
72/*
73 * FRAMELEN is the size of the stack region used by the low-level trap
74 * handler. It is the size of its data (trapframe) plus the callframe
75 * header (sizeof(struct callframe) - 3 register widths). It must also
76 * be 16-byte aligned.
77 */
78#define FRAMELEN roundup(sizeof(struct trapframe) + \
79 sizeof(struct callframe) - 3*sizeof(register_t), 16)
80#define trapframe(td) ((td)->td_frame)
81
82/*
83 * Call frame for PowerPC used during fork.
84 */
85#ifdef __powerpc64__
86struct callframe {
87 register_t cf_dummy_fp; /* dummy frame pointer */
88 register_t cf_cr;
89 register_t cf_lr;
90 register_t cf_compiler;
91 register_t cf_linkeditor;
92 register_t cf_toc;
93 register_t cf_func;
94 register_t cf_arg0;
95 register_t cf_arg1;
96 register_t _padding; /* Maintain 16-byte alignment */
97};
98#else
99struct callframe {
100 register_t cf_dummy_fp; /* dummy frame pointer */
101 register_t cf_lr; /* space for link register save */
102 register_t cf_func;
103 register_t cf_arg0;
104 register_t cf_arg1;
105 register_t _padding; /* Maintain 16-byte alignment */
106};
107#endif
108
109/* Definitions for syscalls */
110#define FIRSTARG 3 /* first arg in reg 3 */
111#define NARGREG 8 /* 8 args in regs */
|