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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
20typedef unsigned long old_sigset_t; /* at least 32 bits */
21
22typedef 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
31typedef sigset_t compat_sigset_t;
32#endif
33
34#endif /* __ASSEMBLY__ */
35#include <uapi/asm/signal.h>
36#ifndef __ASSEMBLY__
37extern 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
52static inline void __gen_sigaddset(sigset_t *set, int _sig)
53{
54 asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
55}
56
57static 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
69static inline void __gen_sigdelset(sigset_t *set, int _sig)
70{
71 asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
72}
73
74static 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
80static 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
86static 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
99struct 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 */