1 #ifndef _ASM_X86_SIGNAL_H 2 #define _ASM_X86_SIGNAL_H 3 4 #ifndef __ASSEMBLY__ 5 #include <linux/linkage.h> 6 7 /* Most things should be clean enough to redefine this at will, if care 8 is taken to make libc match. */ 9 10 #define _NSIG 64 11 12 #ifdef __i386__ 13 # define _NSIG_BPW 32 14 #else 15 # define _NSIG_BPW 64 16 #endif 17 18 #define _NSIG_WORDS (_NSIG / _NSIG_BPW) 19 20 typedef unsigned long old_sigset_t; /* at least 32 bits */ 21 22 typedef struct { 23 unsigned long sig[_NSIG_WORDS]; 24 } sigset_t; 25 26 #ifndef CONFIG_COMPAT 27 typedef sigset_t compat_sigset_t; 28 #endif 29 30 #endif /* __ASSEMBLY__ */ 31 #include <uapi/asm/signal.h> 32 #ifndef __ASSEMBLY__ 33 extern void do_notify_resume(struct pt_regs *, void *, __u32); 34 #ifdef __i386__ 35 struct old_sigaction { 36 __sighandler_t sa_handler; 37 old_sigset_t sa_mask; 38 unsigned long sa_flags; 39 __sigrestore_t sa_restorer; 40 }; 41 42 struct sigaction { 43 __sighandler_t sa_handler; 44 unsigned long sa_flags; 45 __sigrestore_t sa_restorer; 46 sigset_t sa_mask; /* mask last for extensibility */ 47 }; 48 49 #endif /* !__i386__ */ 50 #include <asm/sigcontext.h> 51 52 #ifdef __i386__ 53 54 #define __HAVE_ARCH_SIG_BITOPS 55 56 #define sigaddset(set,sig) \ 57 (__builtin_constant_p(sig) \ 58 ? __const_sigaddset((set), (sig)) \ 59 : __gen_sigaddset((set), (sig))) 60 61 static inline void __gen_sigaddset(sigset_t *set, int _sig) 62 { 63 asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); 64 } 65 66 static inline void __const_sigaddset(sigset_t *set, int _sig) 67 { 68 unsigned long sig = _sig - 1; 69 set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW); 70 } 71 72 #define sigdelset(set, sig) \ 73 (__builtin_constant_p(sig) \ 74 ? __const_sigdelset((set), (sig)) \ 75 : __gen_sigdelset((set), (sig))) 76 77 78 static inline void __gen_sigdelset(sigset_t *set, int _sig) 79 { 80 asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); 81 } 82 83 static inline void __const_sigdelset(sigset_t *set, int _sig) 84 { 85 unsigned long sig = _sig - 1; 86 set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW)); 87 } 88 89 static inline int __const_sigismember(sigset_t *set, int _sig) 90 { 91 unsigned long sig = _sig - 1; 92 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW)); 93 } 94 95 static inline int __gen_sigismember(sigset_t *set, int _sig) 96 { 97 int ret; 98 asm("btl %2,%1\n\tsbbl %0,%0" 99 : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc"); 100 return ret; 101 } 102 103 #define sigismember(set, sig) \ 104 (__builtin_constant_p(sig) \ 105 ? __const_sigismember((set), (sig)) \ 106 : __gen_sigismember((set), (sig))) 107 108 static inline int sigfindinword(unsigned long word) 109 { 110 asm("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc"); 111 return word; 112 } 113 114 struct pt_regs; 115 116 #else /* __i386__ */ 117 118 #undef __HAVE_ARCH_SIG_BITOPS 119 120 #endif /* !__i386__ */ 121 122 #endif /* __ASSEMBLY__ */ 123 #endif /* _ASM_X86_SIGNAL_H */ 124