1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_X86_SIGNAL_H
3*4882a593Smuzhiyun #define _ASM_X86_SIGNAL_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #ifndef __ASSEMBLY__
6*4882a593Smuzhiyun #include <linux/linkage.h>
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun /* Most things should be clean enough to redefine this at will, if care
9*4882a593Smuzhiyun is taken to make libc match. */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #define _NSIG 64
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #ifdef __i386__
14*4882a593Smuzhiyun # define _NSIG_BPW 32
15*4882a593Smuzhiyun #else
16*4882a593Smuzhiyun # define _NSIG_BPW 64
17*4882a593Smuzhiyun #endif
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #define _NSIG_WORDS (_NSIG / _NSIG_BPW)
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun typedef unsigned long old_sigset_t; /* at least 32 bits */
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun typedef struct {
24*4882a593Smuzhiyun unsigned long sig[_NSIG_WORDS];
25*4882a593Smuzhiyun } sigset_t;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun /* non-uapi in-kernel SA_FLAGS for those indicates ABI for a signal frame */
28*4882a593Smuzhiyun #define SA_IA32_ABI 0x02000000u
29*4882a593Smuzhiyun #define SA_X32_ABI 0x01000000u
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun #ifndef CONFIG_COMPAT
32*4882a593Smuzhiyun typedef sigset_t compat_sigset_t;
33*4882a593Smuzhiyun #endif
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */
36*4882a593Smuzhiyun #include <uapi/asm/signal.h>
37*4882a593Smuzhiyun #ifndef __ASSEMBLY__
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun #define __ARCH_HAS_SA_RESTORER
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun #include <asm/asm.h>
42*4882a593Smuzhiyun #include <uapi/asm/sigcontext.h>
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun #ifdef __i386__
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun #define __HAVE_ARCH_SIG_BITOPS
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun #define sigaddset(set,sig) \
49*4882a593Smuzhiyun (__builtin_constant_p(sig) \
50*4882a593Smuzhiyun ? __const_sigaddset((set), (sig)) \
51*4882a593Smuzhiyun : __gen_sigaddset((set), (sig)))
52*4882a593Smuzhiyun
__gen_sigaddset(sigset_t * set,int _sig)53*4882a593Smuzhiyun static inline void __gen_sigaddset(sigset_t *set, int _sig)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
__const_sigaddset(sigset_t * set,int _sig)58*4882a593Smuzhiyun static inline void __const_sigaddset(sigset_t *set, int _sig)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun unsigned long sig = _sig - 1;
61*4882a593Smuzhiyun set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW);
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun #define sigdelset(set, sig) \
65*4882a593Smuzhiyun (__builtin_constant_p(sig) \
66*4882a593Smuzhiyun ? __const_sigdelset((set), (sig)) \
67*4882a593Smuzhiyun : __gen_sigdelset((set), (sig)))
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun
__gen_sigdelset(sigset_t * set,int _sig)70*4882a593Smuzhiyun static inline void __gen_sigdelset(sigset_t *set, int _sig)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
__const_sigdelset(sigset_t * set,int _sig)75*4882a593Smuzhiyun static inline void __const_sigdelset(sigset_t *set, int _sig)
76*4882a593Smuzhiyun {
77*4882a593Smuzhiyun unsigned long sig = _sig - 1;
78*4882a593Smuzhiyun set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW));
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
__const_sigismember(sigset_t * set,int _sig)81*4882a593Smuzhiyun static inline int __const_sigismember(sigset_t *set, int _sig)
82*4882a593Smuzhiyun {
83*4882a593Smuzhiyun unsigned long sig = _sig - 1;
84*4882a593Smuzhiyun return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
__gen_sigismember(sigset_t * set,int _sig)87*4882a593Smuzhiyun static inline int __gen_sigismember(sigset_t *set, int _sig)
88*4882a593Smuzhiyun {
89*4882a593Smuzhiyun bool ret;
90*4882a593Smuzhiyun asm("btl %2,%1" CC_SET(c)
91*4882a593Smuzhiyun : CC_OUT(c) (ret) : "m"(*set), "Ir"(_sig-1));
92*4882a593Smuzhiyun return ret;
93*4882a593Smuzhiyun }
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun #define sigismember(set, sig) \
96*4882a593Smuzhiyun (__builtin_constant_p(sig) \
97*4882a593Smuzhiyun ? __const_sigismember((set), (sig)) \
98*4882a593Smuzhiyun : __gen_sigismember((set), (sig)))
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun struct pt_regs;
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun #else /* __i386__ */
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun #undef __HAVE_ARCH_SIG_BITOPS
105*4882a593Smuzhiyun
106*4882a593Smuzhiyun #endif /* !__i386__ */
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */
109*4882a593Smuzhiyun #endif /* _ASM_X86_SIGNAL_H */
110