1/* $NetBSD: frame.h,v 1.23 2022/04/02 11:16:07 skrll Exp $ */
2
3/*
4 * Copyright (c) 1994-1997 Mark Brinicombe.
5 * Copyright (c) 1994 Brini.
6 * All rights reserved.
7 *
8 * This code is derived from software written for Brini by Mark Brinicombe
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by Brini.
21 * 4. The name of the company nor the name of the author may be used to
22 * endorse or promote products derived from this software without specific
23 * prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37/*
38 * arm/frame.h - Stack frames structures
39 */
40
41#ifndef _ARM_FRAME_H_
42#define _ARM_FRAME_H_
43
44#ifndef _LOCORE
45
46#include <sys/signal.h>
47#include <sys/ucontext.h>
48
49/*
50 * Trap frame. Pushed onto the kernel stack on a trap (synchronous exception).
51 */
52
53typedef struct trapframe {
54 register_t tf_spsr;
55 register_t tf_fill; /* fill here so r0 will be dword aligned */
56 register_t tf_r0;
57 register_t tf_r1;
58 register_t tf_r2;
59 register_t tf_r3;
60 register_t tf_r4;
61 register_t tf_r5;
62 register_t tf_r6;
63 register_t tf_r7;
64 register_t tf_r8;
65 register_t tf_r9;
66 register_t tf_r10;
67 register_t tf_r11;
68 register_t tf_r12;
69 register_t tf_usr_sp;
70 register_t tf_usr_lr;
71 register_t tf_svc_sp;
72 register_t tf_svc_lr;
73 register_t tf_pc;
74} trapframe_t;
75
76/* Register numbers */
77#define tf_ip tf_r12
78#define tf_r13 tf_usr_sp
79#define tf_r14 tf_usr_lr
80#define tf_r15 tf_pc
81
82#define TRAP_USERMODE(tf) (((tf)->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
83
84#define FB_R4 0
85#define FB_R5 1
86#define FB_R6 2
87#define FB_R7 3
88#define FB_R8 4
89#define FB_R9 5
90#define FB_R10 6
91#define FB_R11 7
92#define FB_R12 8
93#define FB_R13 9
94#define FB_R14 10
95#define FB_MAX 11
96struct faultbuf {
97 register_t fb_reg[FB_MAX];
98};
99
100/*
101 * Signal frame. Pushed onto user stack before calling sigcode.
102 */
103#ifdef COMPAT_16
104struct sigframe_sigcontext {
105 struct sigcontext sf_sc;
106};
107#endif
108
109/* the pointers are use in the trampoline code to locate the ucontext */
110struct sigframe_siginfo {
111 siginfo_t sf_si; /* actual saved siginfo */
112 ucontext_t sf_uc; /* actual saved ucontext */
113};
114
115#if defined(_KERNEL) || defined(_KMEMUSER)
116#ifdef _KERNEL
117__BEGIN_DECLS
118void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
119void *getframe(struct lwp *, int, int *);
120__END_DECLS
121#define lwp_settrapframe(l, tf) ((l)->l_md.md_tf = (tf))
122#endif
123#define lwp_trapframe(l) ((l)->l_md.md_tf)
124#endif /* _KERNEL || _KMEMUSER */
125
126#endif /* _LOCORE */
127
128#endif /* _ARM_FRAME_H_ */
129
130/* End of frame.h */