1 #ifndef _ASM_POWERPC_SIGNAL_H
2 #define _ASM_POWERPC_SIGNAL_H
4 #include <linux/types.h>
12 #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
14 typedef unsigned long old_sigset_t; /* at least 32 bits */
17 unsigned long sig[_NSIG_WORDS];
58 /* These should not be considered constants from userland. */
60 #define SIGRTMAX _NSIG
65 * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
66 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
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.
73 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
74 * Unix names RESETHAND and NODEFER respectively.
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
84 #define SA_NOMASK SA_NODEFER
85 #define SA_ONESHOT SA_RESETHAND
86 #define SA_INTERRUPT 0x20000000u /* dummy -- ignored */
88 #define SA_RESTORER 0x04000000U
91 * sigaltstack controls
96 #define MINSIGSTKSZ 2048
99 #include <asm-generic/signal.h>
101 struct old_sigaction {
102 __sighandler_t sa_handler;
103 old_sigset_t sa_mask;
104 unsigned long sa_flags;
105 __sigrestore_t sa_restorer;
109 __sighandler_t sa_handler;
110 unsigned long sa_flags;
111 __sigrestore_t sa_restorer;
112 sigset_t sa_mask; /* mask last for extensibility */
119 typedef struct sigaltstack {
127 extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
128 extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
129 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
130 #endif /* __KERNEL__ */
132 #ifndef __powerpc64__
134 * These are parameters to dbg_sigreturn syscall. They enable or
135 * disable certain debugging things that can be done from signal
136 * handlers. The dbg_sigreturn syscall *must* be called from a
137 * SA_SIGINFO signal so the ucontext can be passed to it. It takes an
138 * array of struct sig_dbg_op, which has the debug operations to
139 * perform before returning from the signal.
143 unsigned long dbg_value;
146 /* Enable or disable single-stepping. The value sets the state. */
147 #define SIG_DBG_SINGLE_STEPPING 1
149 /* Enable or disable branch tracing. The value sets the state. */
150 #define SIG_DBG_BRANCH_TRACING 2
151 #endif /* ! __powerpc64__ */
153 #endif /* _ASM_POWERPC_SIGNAL_H */