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 /* non-uapi in-kernel SA_FLAGS for those indicates ABI for a signal frame */ 27 #define SA_IA32_ABI 0x02000000u 28 #define SA_X32_ABI 0x01000000u 29 30 #ifndef CONFIG_COMPAT 31 typedef sigset_t compat_sigset_t; 32 #endif 33 34 #endif /* __ASSEMBLY__ */ 35 #include <uapi/asm/signal.h> 36 #ifndef __ASSEMBLY__ 37 extern void do_signal(struct pt_regs *regs); 38 39 #define __ARCH_HAS_SA_RESTORER 40 41 #include <uapi/asm/sigcontext.h> 42 43 #ifdef __i386__ 44 45 #define __HAVE_ARCH_SIG_BITOPS 46 47 #define sigaddset(set,sig) \ 48 (__builtin_constant_p(sig) \ 49 ? __const_sigaddset((set), (sig)) \ 50 : __gen_sigaddset((set), (sig))) 51 52 static inline void __gen_sigaddset(sigset_t *set, int _sig) 53 { 54 asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); 55 } 56 57 static inline void __const_sigaddset(sigset_t *set, int _sig) 58 { 59 unsigned long sig = _sig - 1; 60 set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW); 61 } 62 63 #define sigdelset(set, sig) \ 64 (__builtin_constant_p(sig) \ 65 ? __const_sigdelset((set), (sig)) \ 66 : __gen_sigdelset((set), (sig))) 67 68 69 static inline void __gen_sigdelset(sigset_t *set, int _sig) 70 { 71 asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc"); 72 } 73 74 static inline void __const_sigdelset(sigset_t *set, int _sig) 75 { 76 unsigned long sig = _sig - 1; 77 set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW)); 78 } 79 80 static inline int __const_sigismember(sigset_t *set, int _sig) 81 { 82 unsigned long sig = _sig - 1; 83 return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW)); 84 } 85 86 static inline int __gen_sigismember(sigset_t *set, int _sig) 87 { 88 unsigned char ret; 89 asm("btl %2,%1\n\tsetc %0" 90 : "=qm"(ret) : "m"(*set), "Ir"(_sig-1) : "cc"); 91 return ret; 92 } 93 94 #define sigismember(set, sig) \ 95 (__builtin_constant_p(sig) \ 96 ? __const_sigismember((set), (sig)) \ 97 : __gen_sigismember((set), (sig))) 98 99 struct pt_regs; 100 101 #else /* __i386__ */ 102 103 #undef __HAVE_ARCH_SIG_BITOPS 104 105 #endif /* !__i386__ */ 106 107 #endif /* __ASSEMBLY__ */ 108 #endif /* _ASM_X86_SIGNAL_H */ 109