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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _M68K_SIGNAL_H
3#define _M68K_SIGNAL_H
4
5#include <uapi/asm/signal.h>
6
7/* Most things should be clean enough to redefine this at will, if care
8 is taken to make libc match. */
9
10#define _NSIG 64
11#define _NSIG_BPW 32
12#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
13
14typedef unsigned long old_sigset_t; /* at least 32 bits */
15
16typedef struct {
17 unsigned long sig[_NSIG_WORDS];
18} sigset_t;
19
20#define __ARCH_HAS_SA_RESTORER
21
22#include <asm/sigcontext.h>
23
24#ifndef CONFIG_CPU_HAS_NO_BITFIELDS
25#define __HAVE_ARCH_SIG_BITOPS
26
27static inline void sigaddset(sigset_t *set, int _sig)
28{
29 asm ("bfset %0{%1,#1}"
30 : "+o" (*set)
31 : "id" ((_sig - 1) ^ 31)
32 : "cc");
33}
34
35static inline void sigdelset(sigset_t *set, int _sig)
36{
37 asm ("bfclr %0{%1,#1}"
38 : "+o" (*set)
39 : "id" ((_sig - 1) ^ 31)
40 : "cc");
41}
42
43static inline int __const_sigismember(sigset_t *set, int _sig)
44{
45 unsigned long sig = _sig - 1;
46 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
47}
48
49static inline int __gen_sigismember(sigset_t *set, int _sig)
50{
51 int ret;
52 asm ("bfextu %1{%2,#1},%0"
53 : "=d" (ret)
54 : "o" (*set), "id" ((_sig-1) ^ 31)
55 : "cc");
56 return ret;
57}
58
59#define sigismember(set,sig) \
60 (__builtin_constant_p(sig) ? \
61 __const_sigismember(set,sig) : \
62 __gen_sigismember(set,sig))
63
64#endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */
65
66#endif /* _M68K_SIGNAL_H */
1#ifndef _M68K_SIGNAL_H
2#define _M68K_SIGNAL_H
3
4#include <linux/types.h>
5
6/* Avoid too many header ordering problems. */
7struct siginfo;
8
9#ifdef __KERNEL__
10/* Most things should be clean enough to redefine this at will, if care
11 is taken to make libc match. */
12
13#define _NSIG 64
14#define _NSIG_BPW 32
15#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
16
17typedef unsigned long old_sigset_t; /* at least 32 bits */
18
19typedef struct {
20 unsigned long sig[_NSIG_WORDS];
21} sigset_t;
22
23#else
24/* Here we must cater to libcs that poke about in kernel headers. */
25
26#define NSIG 32
27typedef unsigned long sigset_t;
28
29#endif /* __KERNEL__ */
30
31#define SIGHUP 1
32#define SIGINT 2
33#define SIGQUIT 3
34#define SIGILL 4
35#define SIGTRAP 5
36#define SIGABRT 6
37#define SIGIOT 6
38#define SIGBUS 7
39#define SIGFPE 8
40#define SIGKILL 9
41#define SIGUSR1 10
42#define SIGSEGV 11
43#define SIGUSR2 12
44#define SIGPIPE 13
45#define SIGALRM 14
46#define SIGTERM 15
47#define SIGSTKFLT 16
48#define SIGCHLD 17
49#define SIGCONT 18
50#define SIGSTOP 19
51#define SIGTSTP 20
52#define SIGTTIN 21
53#define SIGTTOU 22
54#define SIGURG 23
55#define SIGXCPU 24
56#define SIGXFSZ 25
57#define SIGVTALRM 26
58#define SIGPROF 27
59#define SIGWINCH 28
60#define SIGIO 29
61#define SIGPOLL SIGIO
62/*
63#define SIGLOST 29
64*/
65#define SIGPWR 30
66#define SIGSYS 31
67#define SIGUNUSED 31
68
69/* These should not be considered constants from userland. */
70#define SIGRTMIN 32
71#define SIGRTMAX _NSIG
72
73/*
74 * SA_FLAGS values:
75 *
76 * SA_ONSTACK indicates that a registered stack_t will be used.
77 * SA_RESTART flag to get restarting signals (which were the default long ago)
78 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
79 * SA_RESETHAND clears the handler when the signal is delivered.
80 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
81 * SA_NODEFER prevents the current signal from being masked in the handler.
82 *
83 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
84 * Unix names RESETHAND and NODEFER respectively.
85 */
86#define SA_NOCLDSTOP 0x00000001
87#define SA_NOCLDWAIT 0x00000002
88#define SA_SIGINFO 0x00000004
89#define SA_ONSTACK 0x08000000
90#define SA_RESTART 0x10000000
91#define SA_NODEFER 0x40000000
92#define SA_RESETHAND 0x80000000
93
94#define SA_NOMASK SA_NODEFER
95#define SA_ONESHOT SA_RESETHAND
96
97/*
98 * sigaltstack controls
99 */
100#define SS_ONSTACK 1
101#define SS_DISABLE 2
102
103#define MINSIGSTKSZ 2048
104#define SIGSTKSZ 8192
105
106#include <asm-generic/signal-defs.h>
107
108#ifdef __KERNEL__
109struct old_sigaction {
110 __sighandler_t sa_handler;
111 old_sigset_t sa_mask;
112 unsigned long sa_flags;
113 __sigrestore_t sa_restorer;
114};
115
116struct sigaction {
117 __sighandler_t sa_handler;
118 unsigned long sa_flags;
119 __sigrestore_t sa_restorer;
120 sigset_t sa_mask; /* mask last for extensibility */
121};
122
123struct k_sigaction {
124 struct sigaction sa;
125};
126#else
127/* Here we must cater to libcs that poke about in kernel headers. */
128
129struct sigaction {
130 union {
131 __sighandler_t _sa_handler;
132 void (*_sa_sigaction)(int, struct siginfo *, void *);
133 } _u;
134 sigset_t sa_mask;
135 unsigned long sa_flags;
136 void (*sa_restorer)(void);
137};
138
139#define sa_handler _u._sa_handler
140#define sa_sigaction _u._sa_sigaction
141
142#endif /* __KERNEL__ */
143
144typedef struct sigaltstack {
145 void __user *ss_sp;
146 int ss_flags;
147 size_t ss_size;
148} stack_t;
149
150#ifdef __KERNEL__
151#include <asm/sigcontext.h>
152
153#ifndef CONFIG_CPU_HAS_NO_BITFIELDS
154#define __HAVE_ARCH_SIG_BITOPS
155
156static inline void sigaddset(sigset_t *set, int _sig)
157{
158 asm ("bfset %0{%1,#1}"
159 : "+od" (*set)
160 : "id" ((_sig - 1) ^ 31)
161 : "cc");
162}
163
164static inline void sigdelset(sigset_t *set, int _sig)
165{
166 asm ("bfclr %0{%1,#1}"
167 : "+od" (*set)
168 : "id" ((_sig - 1) ^ 31)
169 : "cc");
170}
171
172static inline int __const_sigismember(sigset_t *set, int _sig)
173{
174 unsigned long sig = _sig - 1;
175 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
176}
177
178static inline int __gen_sigismember(sigset_t *set, int _sig)
179{
180 int ret;
181 asm ("bfextu %1{%2,#1},%0"
182 : "=d" (ret)
183 : "od" (*set), "id" ((_sig-1) ^ 31)
184 : "cc");
185 return ret;
186}
187
188#define sigismember(set,sig) \
189 (__builtin_constant_p(sig) ? \
190 __const_sigismember(set,sig) : \
191 __gen_sigismember(set,sig))
192
193static inline int sigfindinword(unsigned long word)
194{
195 asm ("bfffo %1{#0,#0},%0"
196 : "=d" (word)
197 : "d" (word & -word)
198 : "cc");
199 return word ^ 31;
200}
201
202#endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */
203
204#ifdef __uClinux__
205#define ptrace_signal_deliver(regs, cookie) do { } while (0)
206#else
207struct pt_regs;
208extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
209#endif /* __uClinux__ */
210
211#endif /* __KERNEL__ */
212#endif /* _M68K_SIGNAL_H */