target/linux/ubicom32/files/arch/ubicom32/include/asm/signal.h

   1 /*
   2  * arch/ubicom32/include/asm/signal.h
   3  *   Signal related definitions for Ubicom32 architecture.
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  *
   7  * This file is part of the Ubicom32 Linux Kernel Port.
   8  *
   9  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  10  * it and/or modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation, either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  15  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  16  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  * the GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with the Ubicom32 Linux Kernel Port.  If not,
  21  * see <http://www.gnu.org/licenses/>.
  22  *
  23  * Ubicom32 implementation derived from (with many thanks):
  24  *   arch/m68knommu
  25  *   arch/blackfin
  26  *   arch/parisc
  27  */
  28 #ifndef _ASM_UBICOM32_SIGNAL_H
  29 #define _ASM_UBICOM32_SIGNAL_H
  30
  31 #include <linux/types.h>
  32
  33 /* Avoid too many header ordering problems.  */
  34 struct siginfo;
  35
  36 #ifdef __KERNEL__
  37 /* Most things should be clean enough to redefine this at will, if care
  38    is taken to make libc match.  */
  39
  40 #define _NSIG           64
  41 #define _NSIG_BPW       32
  42 #define _NSIG_WORDS     (_NSIG / _NSIG_BPW)
  43
  44 typedef unsigned long old_sigset_t;             /* at least 32 bits */
  45
  46 typedef struct {
  47         unsigned long sig[_NSIG_WORDS];
  48 } sigset_t;
  49
  50 #endif /* __KERNEL__ */
  51
  52 #define SIGHUP           1
  53 #define SIGINT           2
  54 #define SIGQUIT          3
  55 #define SIGILL           4
  56 #define SIGTRAP          5
  57 #define SIGABRT          6
  58 #define SIGIOT           6
  59 #define SIGBUS           7
  60 #define SIGFPE           8
  61 #define SIGKILL          9
  62 #define SIGUSR1         10
  63 #define SIGSEGV         11
  64 #define SIGUSR2         12
  65 #define SIGPIPE         13
  66 #define SIGALRM         14
  67 #define SIGTERM         15
  68 #define SIGSTKFLT       16
  69 #define SIGCHLD         17
  70 #define SIGCONT         18
  71 #define SIGSTOP         19
  72 #define SIGTSTP         20
  73 #define SIGTTIN         21
  74 #define SIGTTOU         22
  75 #define SIGURG          23
  76 #define SIGXCPU         24
  77 #define SIGXFSZ         25
  78 #define SIGVTALRM       26
  79 #define SIGPROF         27
  80 #define SIGWINCH        28
  81 #define SIGIO           29
  82 #define SIGPOLL         SIGIO
  83 /*
  84 #define SIGLOST         29
  85 */
  86 #define SIGPWR          30
  87 #define SIGSYS          31
  88 #define SIGUNUSED       31
  89
  90 /* These should not be considered constants from userland.  */
  91 #define SIGRTMIN        32
  92 #define SIGRTMAX        _NSIG
  93
  94 /*
  95  * SA_FLAGS values:
  96  *
  97  * SA_ONSTACK indicates that a registered stack_t will be used.
  98  * SA_RESTART flag to get restarting signals (which were the default long ago)
  99  * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
 100  * SA_RESETHAND clears the handler when the signal is delivered.
 101  * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
 102  * SA_NODEFER prevents the current signal from being masked in the handler.
 103  *
 104  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
 105  * Unix names RESETHAND and NODEFER respectively.
 106  */
 107 #define SA_NOCLDSTOP    0x00000001
 108 #define SA_NOCLDWAIT    0x00000002
 109 #define SA_SIGINFO      0x00000004
 110 #define SA_ONSTACK      0x08000000
 111 #define SA_RESTART      0x10000000
 112 #define SA_NODEFER      0x40000000
 113 #define SA_RESETHAND    0x80000000
 114
 115 #define SA_NOMASK       SA_NODEFER
 116 #define SA_ONESHOT      SA_RESETHAND
 117
 118 /*
 119  * sigaltstack controls
 120  */
 121 #define SS_ONSTACK      1
 122 #define SS_DISABLE      2
 123
 124 #define MINSIGSTKSZ     2048
 125 #define SIGSTKSZ        8192
 126
 127 #include <asm-generic/signal.h>
 128
 129 #ifdef __KERNEL__
 130 struct old_sigaction {
 131         __sighandler_t sa_handler;
 132         old_sigset_t sa_mask;
 133         unsigned long sa_flags;
 134         void (*sa_restorer)(void);
 135 };
 136
 137 struct sigaction {
 138         __sighandler_t sa_handler;
 139         unsigned long sa_flags;
 140         void (*sa_restorer)(void);
 141         sigset_t sa_mask;               /* mask last for extensibility */
 142 };
 143
 144 struct k_sigaction {
 145         struct sigaction sa;
 146 };
 147 #else
 148 /* Here we must cater to libcs that poke about in kernel headers.  */
 149
 150 struct sigaction {
 151         union {
 152           __sighandler_t _sa_handler;
 153           void (*_sa_sigaction)(int, struct siginfo *, void *);
 154         } _u;
 155         sigset_t sa_mask;
 156         unsigned long sa_flags;
 157         void (*sa_restorer)(void);
 158 };
 159
 160 #define sa_handler      _u._sa_handler
 161 #define sa_sigaction    _u._sa_sigaction
 162
 163 #endif /* __KERNEL__ */
 164
 165 typedef struct sigaltstack {
 166         void *ss_sp;
 167         int ss_flags;
 168         size_t ss_size;
 169 } stack_t;
 170
 171 #ifdef __KERNEL__
 172
 173 #include <asm/sigcontext.h>
 174 #undef __HAVE_ARCH_SIG_BITOPS
 175
 176 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 177
 178 #endif /* __KERNEL__ */
 179
 180 #endif /* _ASM_UBICOM32_SIGNAL_H */