1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_ASM_POWERPC_SIGNAL_H
3#define _UAPI_ASM_POWERPC_SIGNAL_H
4
5#include <linux/types.h>
6
7#define _NSIG		64
8#ifdef __powerpc64__
9#define _NSIG_BPW	64
10#else
11#define _NSIG_BPW	32
12#endif
13#define _NSIG_WORDS	(_NSIG / _NSIG_BPW)
14
15typedef unsigned long old_sigset_t;		/* at least 32 bits */
16
17typedef struct {
18	unsigned long sig[_NSIG_WORDS];
19} sigset_t;
20
21#define SIGHUP		 1
22#define SIGINT		 2
23#define SIGQUIT		 3
24#define SIGILL		 4
25#define SIGTRAP		 5
26#define SIGABRT		 6
27#define SIGIOT		 6
28#define SIGBUS		 7
29#define SIGFPE		 8
30#define SIGKILL		 9
31#define SIGUSR1		10
32#define SIGSEGV		11
33#define SIGUSR2		12
34#define SIGPIPE		13
35#define SIGALRM		14
36#define SIGTERM		15
37#define SIGSTKFLT	16
38#define SIGCHLD		17
39#define SIGCONT		18
40#define SIGSTOP		19
41#define SIGTSTP		20
42#define SIGTTIN		21
43#define SIGTTOU		22
44#define SIGURG		23
45#define SIGXCPU		24
46#define SIGXFSZ		25
47#define SIGVTALRM	26
48#define SIGPROF		27
49#define SIGWINCH	28
50#define SIGIO		29
51#define SIGPOLL		SIGIO
52/*
53#define SIGLOST		29
54*/
55#define SIGPWR		30
56#define SIGSYS		31
57#define	SIGUNUSED	31
58
59/* These should not be considered constants from userland.  */
60#define SIGRTMIN	32
61#define SIGRTMAX	_NSIG
62
63/*
64 * SA_FLAGS values:
65 *
66 * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
67 * SA_RESTART flag to get restarting signals (which were the default long ago)
68 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
69 * SA_RESETHAND clears the handler when the signal is delivered.
70 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
71 * SA_NODEFER prevents the current signal from being masked in the handler.
72 *
73 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
74 * Unix names RESETHAND and NODEFER respectively.
75 */
76#define SA_NOCLDSTOP	0x00000001U
77#define SA_NOCLDWAIT	0x00000002U
78#define SA_SIGINFO	0x00000004U
79#define SA_ONSTACK	0x08000000U
80#define SA_RESTART	0x10000000U
81#define SA_NODEFER	0x40000000U
82#define SA_RESETHAND	0x80000000U
83
84#define SA_NOMASK	SA_NODEFER
85#define SA_ONESHOT	SA_RESETHAND
86
87#define SA_RESTORER	0x04000000U
88
89#define MINSIGSTKSZ	2048
90#define SIGSTKSZ	8192
91
92#include <asm-generic/signal-defs.h>
93
94#ifndef __KERNEL__
95struct old_sigaction {
96	__sighandler_t sa_handler;
97	old_sigset_t sa_mask;
98	unsigned long sa_flags;
99	__sigrestore_t sa_restorer;
100};
101
102struct sigaction {
103	__sighandler_t sa_handler;
104	unsigned long sa_flags;
105	__sigrestore_t sa_restorer;
106	sigset_t sa_mask;		/* mask last for extensibility */
107};
108#endif
109
110typedef struct sigaltstack {
111	void __user *ss_sp;
112	int ss_flags;
113	size_t ss_size;
114} stack_t;
115
116
117#ifndef __powerpc64__
118/*
119 * These are parameters to dbg_sigreturn syscall.  They enable or
120 * disable certain debugging things that can be done from signal
121 * handlers.  The dbg_sigreturn syscall *must* be called from a
122 * SA_SIGINFO signal so the ucontext can be passed to it.  It takes an
123 * array of struct sig_dbg_op, which has the debug operations to
124 * perform before returning from the signal.
125 */
126struct sig_dbg_op {
127	int dbg_type;
128	unsigned long dbg_value;
129};
130
131/* Enable or disable single-stepping.  The value sets the state. */
132#define SIG_DBG_SINGLE_STEPPING		1
133
134/* Enable or disable branch tracing.  The value sets the state. */
135#define SIG_DBG_BRANCH_TRACING		2
136#endif /* ! __powerpc64__ */
137
138#endif /* _UAPI_ASM_POWERPC_SIGNAL_H */
139