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Linux/arch/xtensa/include/uapi/asm/signal.h

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  1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2 /*
  3  * include/asm-xtensa/signal.h
  4  *
  5  * Swiped from SH.
  6  *
  7  * This file is subject to the terms and conditions of the GNU General Public
  8  * License.  See the file "COPYING" in the main directory of this archive
  9  * for more details.
 10  *
 11  * Copyright (C) 2001 - 2005 Tensilica Inc.
 12  */
 13 
 14 #ifndef _UAPI_XTENSA_SIGNAL_H
 15 #define _UAPI_XTENSA_SIGNAL_H
 16 
 17 
 18 #define _NSIG           64
 19 #define _NSIG_BPW       32
 20 #define _NSIG_WORDS     (_NSIG / _NSIG_BPW)
 21 
 22 #ifndef __ASSEMBLY__
 23 
 24 #include <linux/types.h>
 25 
 26 /* Avoid too many header ordering problems.  */
 27 struct siginfo;
 28 typedef unsigned long old_sigset_t;             /* at least 32 bits */
 29 typedef struct {
 30         unsigned long sig[_NSIG_WORDS];
 31 } sigset_t;
 32 
 33 #endif
 34 
 35 #define SIGHUP           1
 36 #define SIGINT           2
 37 #define SIGQUIT          3
 38 #define SIGILL           4
 39 #define SIGTRAP          5
 40 #define SIGABRT          6
 41 #define SIGIOT           6
 42 #define SIGBUS           7
 43 #define SIGFPE           8
 44 #define SIGKILL          9
 45 #define SIGUSR1         10
 46 #define SIGSEGV         11
 47 #define SIGUSR2         12
 48 #define SIGPIPE         13
 49 #define SIGALRM         14
 50 #define SIGTERM         15
 51 #define SIGSTKFLT       16
 52 #define SIGCHLD         17
 53 #define SIGCONT         18
 54 #define SIGSTOP         19
 55 #define SIGTSTP         20
 56 #define SIGTTIN         21
 57 #define SIGTTOU         22
 58 #define SIGURG          23
 59 #define SIGXCPU         24
 60 #define SIGXFSZ         25
 61 #define SIGVTALRM       26
 62 #define SIGPROF         27
 63 #define SIGWINCH        28
 64 #define SIGIO           29
 65 #define SIGPOLL         SIGIO
 66 /* #define SIGLOST              29 */
 67 #define SIGPWR          30
 68 #define SIGSYS          31
 69 #define SIGUNUSED       31
 70 
 71 /* These should not be considered constants from userland.  */
 72 #define SIGRTMIN        32
 73 #define SIGRTMAX        (_NSIG-1)
 74 
 75 /*
 76  * SA_FLAGS values:
 77  *
 78  * SA_ONSTACK indicates that a registered stack_t will be used.
 79  * SA_RESTART flag to get restarting signals (which were the default long ago)
 80  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
 81  * SA_RESETHAND clears the handler when the signal is delivered.
 82  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
 83  * SA_NODEFER prevents the current signal from being masked in the handler.
 84  *
 85  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
 86  * Unix names RESETHAND and NODEFER respectively.
 87  */
 88 #define SA_NOCLDSTOP    0x00000001
 89 #define SA_NOCLDWAIT    0x00000002 /* not supported yet */
 90 #define SA_SIGINFO      0x00000004
 91 #define SA_ONSTACK      0x08000000
 92 #define SA_RESTART      0x10000000
 93 #define SA_NODEFER      0x40000000
 94 #define SA_RESETHAND    0x80000000
 95 
 96 #define SA_NOMASK       SA_NODEFER
 97 #define SA_ONESHOT      SA_RESETHAND
 98 
 99 #define SA_RESTORER     0x04000000
100 
101 #define MINSIGSTKSZ     2048
102 #define SIGSTKSZ        8192
103 
104 #ifndef __ASSEMBLY__
105 
106 #include <asm-generic/signal-defs.h>
107 
108 #ifndef __KERNEL__
109 
110 /* Here we must cater to libcs that poke about in kernel headers.  */
111 
112 struct sigaction {
113         union {
114           __sighandler_t _sa_handler;
115           void (*_sa_sigaction)(int, struct siginfo *, void *);
116         } _u;
117         sigset_t sa_mask;
118         unsigned long sa_flags;
119         void (*sa_restorer)(void);
120 };
121 
122 #define sa_handler      _u._sa_handler
123 #define sa_sigaction    _u._sa_sigaction
124 
125 #endif /* __KERNEL__ */
126 
127 typedef struct sigaltstack {
128         void *ss_sp;
129         int ss_flags;
130         size_t ss_size;
131 } stack_t;
132 
133 #endif  /* __ASSEMBLY__ */
134 #endif /* _UAPI_XTENSA_SIGNAL_H */
135 

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