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.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#define __HAVE_ARCH_SIG_BITOPS
154
155static inline void sigaddset(sigset_t *set, int _sig)
156{
157	asm ("bfset %0{%1,#1}"
158		: "+od" (*set)
159		: "id" ((_sig - 1) ^ 31)
160		: "cc");
161}
162
163static inline void sigdelset(sigset_t *set, int _sig)
164{
165	asm ("bfclr %0{%1,#1}"
166		: "+od" (*set)
167		: "id" ((_sig - 1) ^ 31)
168		: "cc");
169}
170
171static inline int __const_sigismember(sigset_t *set, int _sig)
172{
173	unsigned long sig = _sig - 1;
174	return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
175}
176
177static inline int __gen_sigismember(sigset_t *set, int _sig)
178{
179	int ret;
180	asm ("bfextu %1{%2,#1},%0"
181		: "=d" (ret)
182		: "od" (*set), "id" ((_sig-1) ^ 31)
183		: "cc");
184	return ret;
185}
186
187#define sigismember(set,sig)			\
188	(__builtin_constant_p(sig) ?		\
189	 __const_sigismember(set,sig) :		\
190	 __gen_sigismember(set,sig))
191
192static inline int sigfindinword(unsigned long word)
193{
194	asm ("bfffo %1{#0,#0},%0"
195		: "=d" (word)
196		: "d" (word & -word)
197		: "cc");
198	return word ^ 31;
199}
200
201struct pt_regs;
202extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
203
204#endif /* __KERNEL__ */
205
206#endif /* _M68K_SIGNAL_H */
207