[people/arne_f/kernel.git] / arch / m68k / include / asm / signal.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _M68K_SIGNAL_H
#define _M68K_SIGNAL_H

#include <uapi/asm/signal.h>

/* Most things should be clean enough to redefine this at will, if care
   is taken to make libc match.  */

#define _NSIG		64
#define _NSIG_BPW	32
#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;

#define __ARCH_HAS_SA_RESTORER

#include <asm/sigcontext.h>

#ifndef CONFIG_CPU_HAS_NO_BITFIELDS
#define __HAVE_ARCH_SIG_BITOPS

static inline void sigaddset(sigset_t *set, int _sig)
{
	asm ("bfset %0{%1,#1}"
		: "+o" (*set)
		: "id" ((_sig - 1) ^ 31)
		: "cc");
}

static inline void sigdelset(sigset_t *set, int _sig)
{
	asm ("bfclr %0{%1,#1}"
		: "+o" (*set)
		: "id" ((_sig - 1) ^ 31)
		: "cc");
}

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)
{
	int ret;
	asm ("bfextu %1{%2,#1},%0"
		: "=d" (ret)
		: "o" (*set), "id" ((_sig-1) ^ 31)
		: "cc");
	return ret;
}

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

#endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */

#endif /* _M68K_SIGNAL_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
8dba99e0 GU	2	#ifndef _M68K_SIGNAL_H
	3	#define _M68K_SIGNAL_H
	4
10b3a979	5	#include <uapi/asm/signal.h>
8dba99e0	6
8dba99e0 GU	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	#define _NSIG_BPW 32
	12	#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
	13
	14	typedef unsigned long old_sigset_t; /* at least 32 bits */
	15
	16	typedef struct {
	17	unsigned long sig[_NSIG_WORDS];
	18	} sigset_t;
	19
574c4866	20	#define __ARCH_HAS_SA_RESTORER
8dba99e0	21
8dba99e0 GU	22	#include <asm/sigcontext.h>
8dba99e0 GU	23
f3c23a28	24	#ifndef CONFIG_CPU_HAS_NO_BITFIELDS
8dba99e0 GU	25	#define __HAVE_ARCH_SIG_BITOPS
	26
	27	static inline void sigaddset(sigset_t *set, int _sig)
	28	{
	29	asm ("bfset %0{%1,#1}"
34fa78b5	30	: "+o" (*set)
8dba99e0 GU	31	: "id" ((_sig - 1) ^ 31)
	32	: "cc");
	33	}
	34
	35	static inline void sigdelset(sigset_t *set, int _sig)
	36	{
	37	asm ("bfclr %0{%1,#1}"
34fa78b5	38	: "+o" (*set)
8dba99e0 GU	39	: "id" ((_sig - 1) ^ 31)
	40	: "cc");
	41	}
	42
	43	static inline int __const_sigismember(sigset_t *set, int _sig)
	44	{
	45	unsigned long sig = _sig - 1;
	46	return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
	47	}
	48
	49	static inline int __gen_sigismember(sigset_t *set, int _sig)
	50	{
	51	int ret;
	52	asm ("bfextu %1{%2,#1},%0"
	53	: "=d" (ret)
34fa78b5	54	: "o" (*set), "id" ((_sig-1) ^ 31)
8dba99e0 GU	55	: "cc");
	56	return ret;
	57	}
	58
	59	#define sigismember(set,sig) \
	60	(__builtin_constant_p(sig) ? \
	61	__const_sigismember(set,sig) : \
	62	__gen_sigismember(set,sig))
	63
f3c23a28	64	#endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */
8dba99e0	65
8dba99e0	66	#endif /* _M68K_SIGNAL_H */