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DEFINITIONS
This source file includes following definitions.
- __gen_sigaddset
- __const_sigaddset
- __gen_sigdelset
- __const_sigdelset
- __const_sigismember
- __gen_sigismember
- sigfindinword
#ifndef ASM_X86__SIGNAL_H
#define ASM_X86__SIGNAL_H
#ifndef __ASSEMBLY__
#include <linux/types.h>
#include <linux/time.h>
#include <linux/compiler.h>
/* Avoid too many header ordering problems. */
struct siginfo;
#ifdef __KERNEL__
#include <linux/linkage.h>
/* Most things should be clean enough to redefine this at will, if care
is taken to make libc match. */
#define _NSIG 64
#ifdef __i386__
# define _NSIG_BPW 32
#else
# define _NSIG_BPW 64
#endif
#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
typedef unsigned long old_sigset_t; /* at least 32 bits */
typedef struct {
unsigned long sig[_NSIG_WORDS];
} sigset_t;
#else
/* Here we must cater to libcs that poke about in kernel headers. */
#define NSIG 32
typedef unsigned long sigset_t;
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
#define SIGHUP 1
#define SIGINT 2
#define SIGQUIT 3
#define SIGILL 4
#define SIGTRAP 5
#define SIGABRT 6
#define SIGIOT 6
#define SIGBUS 7
#define SIGFPE 8
#define SIGKILL 9
#define SIGUSR1 10
#define SIGSEGV 11
#define SIGUSR2 12
#define SIGPIPE 13
#define SIGALRM 14
#define SIGTERM 15
#define SIGSTKFLT 16
#define SIGCHLD 17
#define SIGCONT 18
#define SIGSTOP 19
#define SIGTSTP 20
#define SIGTTIN 21
#define SIGTTOU 22
#define SIGURG 23
#define SIGXCPU 24
#define SIGXFSZ 25
#define SIGVTALRM 26
#define SIGPROF 27
#define SIGWINCH 28
#define SIGIO 29
#define SIGPOLL SIGIO
/*
#define SIGLOST 29
*/
#define SIGPWR 30
#define SIGSYS 31
#define SIGUNUSED 31
/* These should not be considered constants from userland. */
#define SIGRTMIN 32
#define SIGRTMAX _NSIG
/*
* SA_FLAGS values:
*
* SA_ONSTACK indicates that a registered stack_t will be used.
* SA_RESTART flag to get restarting signals (which were the default long ago)
* SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
* SA_RESETHAND clears the handler when the signal is delivered.
* SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
* SA_NODEFER prevents the current signal from being masked in the handler.
*
* SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
* Unix names RESETHAND and NODEFER respectively.
*/
#define SA_NOCLDSTOP 0x00000001u
#define SA_NOCLDWAIT 0x00000002u
#define SA_SIGINFO 0x00000004u
#define SA_ONSTACK 0x08000000u
#define SA_RESTART 0x10000000u
#define SA_NODEFER 0x40000000u
#define SA_RESETHAND 0x80000000u
#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT SA_RESETHAND
#define SA_RESTORER 0x04000000
/*
* sigaltstack controls
*/
#define SS_ONSTACK 1
#define SS_DISABLE 2
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192
#include <asm-generic/signal.h>
#ifndef __ASSEMBLY__
#ifdef __i386__
# ifdef __KERNEL__
struct old_sigaction {
__sighandler_t sa_handler;
old_sigset_t sa_mask;
unsigned long sa_flags;
__sigrestore_t sa_restorer;
};
struct sigaction {
__sighandler_t sa_handler;
unsigned long sa_flags;
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
struct k_sigaction {
struct sigaction sa;
};
extern void do_notify_resume(struct pt_regs *, void *, __u32);
# else /* __KERNEL__ */
/* Here we must cater to libcs that poke about in kernel headers. */
struct sigaction {
union {
__sighandler_t _sa_handler;
void (*_sa_sigaction)(int, struct siginfo *, void *);
} _u;
sigset_t sa_mask;
unsigned long sa_flags;
void (*sa_restorer)(void);
};
#define sa_handler _u._sa_handler
#define sa_sigaction _u._sa_sigaction
# endif /* ! __KERNEL__ */
#else /* __i386__ */
struct sigaction {
__sighandler_t sa_handler;
unsigned long sa_flags;
__sigrestore_t sa_restorer;
sigset_t sa_mask; /* mask last for extensibility */
};
struct k_sigaction {
struct sigaction sa;
};
#endif /* !__i386__ */
typedef struct sigaltstack {
void __user *ss_sp;
int ss_flags;
size_t ss_size;
} stack_t;
#ifdef __KERNEL__
#include <asm/sigcontext.h>
#ifdef __i386__
#define __HAVE_ARCH_SIG_BITOPS
#define sigaddset(set,sig) \
(__builtin_constant_p(sig) \
? __const_sigaddset((set), (sig)) \
: __gen_sigaddset((set), (sig)))
static inline void __gen_sigaddset(sigset_t *set, int _sig)
{
asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
}
static inline void __const_sigaddset(sigset_t *set, int _sig)
{
unsigned long sig = _sig - 1;
set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW);
}
#define sigdelset(set, sig) \
(__builtin_constant_p(sig) \
? __const_sigdelset((set), (sig)) \
: __gen_sigdelset((set), (sig)))
static inline void __gen_sigdelset(sigset_t *set, int _sig)
{
asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
}
static inline void __const_sigdelset(sigset_t *set, int _sig)
{
unsigned long sig = _sig - 1;
set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW));
}
static inline int __const_sigismember(sigset_t *set, int _sig)
{
unsigned long sig = _sig - 1;
return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
}
static inline int __gen_sigismember(sigset_t *set, int _sig)
{
int ret;
asm("btl %2,%1\n\tsbbl %0,%0"
: "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
return ret;
}
#define sigismember(set, sig) \
(__builtin_constant_p(sig) \
? __const_sigismember((set), (sig)) \
: __gen_sigismember((set), (sig)))
static inline int sigfindinword(unsigned long word)
{
asm("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc");
return word;
}
struct pt_regs;
#else /* __i386__ */
#undef __HAVE_ARCH_SIG_BITOPS
#endif /* !__i386__ */
#define ptrace_signal_deliver(regs, cookie) do { } while (0)
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
#endif /* ASM_X86__SIGNAL_H */