1 /* SPDX-License-Identifier: GPL-2.0 */ !! 1 #ifndef _ASMAXP_SIGNAL_H
2 #ifndef __ASM_GENERIC_SIGNAL_H !! 2 #define _ASMAXP_SIGNAL_H
3 #define __ASM_GENERIC_SIGNAL_H <<
4 3
5 #include <uapi/asm-generic/signal.h> !! 4 #include <linux/types.h>
6 5
7 #ifndef __ASSEMBLY__ !! 6 /* Avoid too many header ordering problems. */
>> 7 struct siginfo;
8 8
>> 9 #ifdef __KERNEL__
>> 10 /* Digital Unix defines 64 signals. Most things should be clean enough
>> 11 to redefine this at will, if care is taken to make libc match. */
>> 12
>> 13 #define _NSIG 64
>> 14 #define _NSIG_BPW 64
>> 15 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
>> 16
>> 17 typedef unsigned long old_sigset_t; /* at least 32 bits */
>> 18
>> 19 typedef 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
>> 27 typedef unsigned long sigset_t;
>> 28
>> 29 #endif /* __KERNEL__ */
>> 30
>> 31
>> 32 /*
>> 33 * Linux/AXP has different signal numbers that Linux/i386: I'm trying
>> 34 * to make it OSF/1 binary compatible, at least for normal binaries.
>> 35 */
>> 36 #define SIGHUP 1
>> 37 #define SIGINT 2
>> 38 #define SIGQUIT 3
>> 39 #define SIGILL 4
>> 40 #define SIGTRAP 5
>> 41 #define SIGABRT 6
>> 42 #define SIGEMT 7
>> 43 #define SIGFPE 8
>> 44 #define SIGKILL 9
>> 45 #define SIGBUS 10
>> 46 #define SIGSEGV 11
>> 47 #define SIGSYS 12
>> 48 #define SIGPIPE 13
>> 49 #define SIGALRM 14
>> 50 #define SIGTERM 15
>> 51 #define SIGURG 16
>> 52 #define SIGSTOP 17
>> 53 #define SIGTSTP 18
>> 54 #define SIGCONT 19
>> 55 #define SIGCHLD 20
>> 56 #define SIGTTIN 21
>> 57 #define SIGTTOU 22
>> 58 #define SIGIO 23
>> 59 #define SIGXCPU 24
>> 60 #define SIGXFSZ 25
>> 61 #define SIGVTALRM 26
>> 62 #define SIGPROF 27
>> 63 #define SIGWINCH 28
>> 64 #define SIGINFO 29
>> 65 #define SIGUSR1 30
>> 66 #define SIGUSR2 31
>> 67
>> 68 #define SIGPOLL SIGIO
>> 69 #define SIGPWR SIGINFO
>> 70 #define SIGIOT SIGABRT
>> 71
>> 72 /* These should not be considered constants from userland. */
>> 73 #define SIGRTMIN 32
>> 74 #define SIGRTMAX (_NSIG-1)
>> 75
>> 76 /*
>> 77 * SA_FLAGS values:
>> 78 *
>> 79 * SA_ONSTACK indicates that a registered stack_t will be used.
>> 80 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
>> 81 * SA_RESTART flag to get restarting signals (which were the default long ago)
>> 82 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
>> 83 * SA_RESETHAND clears the handler when the signal is delivered.
>> 84 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
>> 85 * SA_NODEFER prevents the current signal from being masked in the handler.
>> 86 *
>> 87 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
>> 88 * Unix names RESETHAND and NODEFER respectively.
>> 89 */
>> 90
>> 91 #define SA_ONSTACK 0x00000001
>> 92 #define SA_RESTART 0x00000002
>> 93 #define SA_NOCLDSTOP 0x00000004
>> 94 #define SA_NODEFER 0x00000008
>> 95 #define SA_RESETHAND 0x00000010
>> 96 #define SA_NOCLDWAIT 0x00000020 /* not supported yet */
>> 97 #define SA_SIGINFO 0x00000040
>> 98
>> 99 #define SA_ONESHOT SA_RESETHAND
>> 100 #define SA_NOMASK SA_NODEFER
>> 101 #define SA_INTERRUPT 0x20000000 /* dummy -- ignored */
>> 102
>> 103 /*
>> 104 * sigaltstack controls
>> 105 */
>> 106 #define SS_ONSTACK 1
>> 107 #define SS_DISABLE 2
>> 108
>> 109 #define MINSIGSTKSZ 4096
>> 110 #define SIGSTKSZ 16384
>> 111
>> 112
>> 113 #ifdef __KERNEL__
>> 114 /*
>> 115 * These values of sa_flags are used only by the kernel as part of the
>> 116 * irq handling routines.
>> 117 *
>> 118 * SA_INTERRUPT is also used by the irq handling routines.
>> 119 * SA_SHIRQ is for shared interrupt support on PCI and EISA.
>> 120 */
>> 121 #define SA_PROBE SA_ONESHOT
>> 122 #define SA_SAMPLE_RANDOM SA_RESTART
>> 123 #define SA_SHIRQ 0x40000000
>> 124 #endif
>> 125
>> 126 #define SIG_BLOCK 1 /* for blocking signals */
>> 127 #define SIG_UNBLOCK 2 /* for unblocking signals */
>> 128 #define SIG_SETMASK 3 /* for setting the signal mask */
>> 129
>> 130 /* Type of a signal handler. */
>> 131 typedef void (*__sighandler_t)(int);
>> 132
>> 133 #define SIG_DFL ((__sighandler_t)0) /* default signal handling */
>> 134 #define SIG_IGN ((__sighandler_t)1) /* ignore signal */
>> 135 #define SIG_ERR ((__sighandler_t)-1) /* error return from signal */
>> 136
>> 137 #ifdef __KERNEL__
>> 138 struct osf_sigaction {
>> 139 __sighandler_t sa_handler;
>> 140 old_sigset_t sa_mask;
>> 141 int sa_flags;
>> 142 };
>> 143
>> 144 struct sigaction {
>> 145 __sighandler_t sa_handler;
>> 146 unsigned long sa_flags;
>> 147 sigset_t sa_mask; /* mask last for extensibility */
>> 148 };
>> 149
>> 150 struct k_sigaction {
>> 151 struct sigaction sa;
>> 152 void (*ka_restorer)(void);
>> 153 };
>> 154 #else
>> 155 /* Here we must cater to libcs that poke about in kernel headers. */
>> 156
>> 157 struct sigaction {
>> 158 union {
>> 159 __sighandler_t _sa_handler;
>> 160 void (*_sa_sigaction)(int, struct siginfo *, void *);
>> 161 } _u;
>> 162 sigset_t sa_mask;
>> 163 int sa_flags;
>> 164 };
>> 165
>> 166 #define sa_handler _u._sa_handler
>> 167 #define sa_sigaction _u._sa_sigaction
>> 168
>> 169 #endif /* __KERNEL__ */
>> 170
>> 171 typedef struct sigaltstack {
>> 172 void *ss_sp;
>> 173 int ss_flags;
>> 174 size_t ss_size;
>> 175 } stack_t;
>> 176
>> 177 /* sigstack(2) is deprecated, and will be withdrawn in a future version
>> 178 of the X/Open CAE Specification. Use sigaltstack instead. It is only
>> 179 implemented here for OSF/1 compatibility. */
>> 180
>> 181 struct sigstack {
>> 182 void *ss_sp;
>> 183 int ss_onstack;
>> 184 };
>> 185
>> 186 #ifdef __KERNEL__
9 #include <asm/sigcontext.h> 187 #include <asm/sigcontext.h>
10 #undef __HAVE_ARCH_SIG_BITOPS !! 188 #endif
11 189
12 #endif /* __ASSEMBLY__ */ !! 190 #endif
13 #endif /* _ASM_GENERIC_SIGNAL_H */ <<
14 191
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