[linux-2.6-block.git] / arch / x86 / include / asm / signal.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_SIGNAL_H
#define _ASM_X86_SIGNAL_H

#ifndef __ASSEMBLY__
#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;

/* non-uapi in-kernel SA_FLAGS for those indicates ABI for a signal frame */
#define SA_IA32_ABI	0x02000000u
#define SA_X32_ABI	0x01000000u

#ifndef CONFIG_COMPAT
typedef sigset_t compat_sigset_t;
#endif

#endif /* __ASSEMBLY__ */
#include <uapi/asm/signal.h>
#ifndef __ASSEMBLY__
extern void do_signal(struct pt_regs *regs);

#define __ARCH_HAS_SA_RESTORER

#include <asm/asm.h>
#include <uapi/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)
{
	bool ret;
	asm("btl %2,%1" CC_SET(c)
	    : CC_OUT(c) (ret) : "m"(*set), "Ir"(_sig-1));
	return ret;
}

#define sigismember(set, sig)			\
	(__builtin_constant_p(sig)		\
	 ? __const_sigismember((set), (sig))	\
	 : __gen_sigismember((set), (sig)))

struct pt_regs;

#else /* __i386__ */

#undef __HAVE_ARCH_SIG_BITOPS

#endif /* !__i386__ */

#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_SIGNAL_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1965aae3 PA	2	#ifndef _ASM_X86_SIGNAL_H
1965aae3 PA	3	#define _ASM_X86_SIGNAL_H
33185c50 TG	4
33185c50 TG	5	#ifndef __ASSEMBLY__
33185c50 TG	6	#include <linux/linkage.h>
	7
	8	/* Most things should be clean enough to redefine this at will, if care
	9	is taken to make libc match. */
	10
	11	#define _NSIG 64
	12
	13	#ifdef __i386__
	14	# define _NSIG_BPW 32
96a388de	15	#else
33185c50 TG	16	# define _NSIG_BPW 64
	17	#endif
	18
	19	#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
	20
	21	typedef unsigned long old_sigset_t; /* at least 32 bits */
	22
	23	typedef struct {
	24	unsigned long sig[_NSIG_WORDS];
	25	} sigset_t;
	26
68463510 DS	27	/* non-uapi in-kernel SA_FLAGS for those indicates ABI for a signal frame */
	28	#define SA_IA32_ABI 0x02000000u
	29	#define SA_X32_ABI 0x01000000u
	30
050902c0 SS	31	#ifndef CONFIG_COMPAT
	32	typedef sigset_t compat_sigset_t;
	33	#endif
	34
33185c50	35	#endif /* __ASSEMBLY__ */
af170c50	36	#include <uapi/asm/signal.h>
33185c50	37	#ifndef __ASSEMBLY__
1f484aa6	38	extern void do_signal(struct pt_regs *regs);
574c4866 AV	39
	40	#define __ARCH_HAS_SA_RESTORER
	41
26e609ec	42	#include <asm/asm.h>
decb4c41	43	#include <uapi/asm/sigcontext.h>
33185c50	44
723edb50	45	#ifdef __i386__
33185c50 TG	46
	47	#define __HAVE_ARCH_SIG_BITOPS
	48
9551b12a	49	#define sigaddset(set,sig) \
723edb50	50	(__builtin_constant_p(sig) \
9551b12a JP	51	? __const_sigaddset((set), (sig)) \
9551b12a JP	52	: __gen_sigaddset((set), (sig)))
33185c50	53
9551b12a	54	static inline void __gen_sigaddset(sigset_t *set, int _sig)
33185c50	55	{
9551b12a	56	asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
33185c50 TG	57	}
33185c50 TG	58
9551b12a	59	static inline void __const_sigaddset(sigset_t *set, int _sig)
33185c50 TG	60	{
	61	unsigned long sig = _sig - 1;
	62	set->sig[sig / _NSIG_BPW] \|= 1 << (sig % _NSIG_BPW);
	63	}
	64
9551b12a JP	65	#define sigdelset(set, sig) \
	66	(__builtin_constant_p(sig) \
	67	? __const_sigdelset((set), (sig)) \
	68	: __gen_sigdelset((set), (sig)))
33185c50 TG	69
33185c50 TG	70
9551b12a	71	static inline void __gen_sigdelset(sigset_t *set, int _sig)
33185c50	72	{
9551b12a	73	asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
33185c50 TG	74	}
33185c50 TG	75
9551b12a	76	static inline void __const_sigdelset(sigset_t *set, int _sig)
33185c50 TG	77	{
	78	unsigned long sig = _sig - 1;
	79	set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW));
	80	}
	81
9551b12a	82	static inline int __const_sigismember(sigset_t *set, int _sig)
33185c50 TG	83	{
	84	unsigned long sig = _sig - 1;
	85	return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
	86	}
	87
9551b12a	88	static inline int __gen_sigismember(sigset_t *set, int _sig)
33185c50	89	{
26e609ec UB	90	bool ret;
	91	asm("btl %2,%1" CC_SET(c)
	92	: CC_OUT(c) (ret) : "m"(*set), "Ir"(_sig-1));
33185c50 TG	93	return ret;
	94	}
	95
9551b12a JP	96	#define sigismember(set, sig) \
	97	(__builtin_constant_p(sig) \
	98	? __const_sigismember((set), (sig)) \
	99	: __gen_sigismember((set), (sig)))
33185c50	100
33185c50 TG	101	struct pt_regs;
33185c50 TG	102
33185c50 TG	103	#else /* __i386__ */
	104
	105	#undef __HAVE_ARCH_SIG_BITOPS
	106
e1f28773 RM	107	#endif /* !__i386__ */
e1f28773 RM	108
33185c50	109	#endif /* __ASSEMBLY__ */
1965aae3	110	#endif /* _ASM_X86_SIGNAL_H */