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  +   'ˆl–ß=¿JÅ!¶e8 EpÜ TÅ£Î„¿_†I|¥+ÂÑ *K    '/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _ASM_GENERIC_SIGINFO_H
#define _ASM_GENERIC_SIGINFO_H


#include <linux/types.h>

typedef union sigval {
	int sival_int;
	void *sival_ptr;
} sigval_t;

#define SI_MAX_SIZE	128

/*
 * The default "si_band" type is "long", as specified by POSIX.
 * However, some architectures want to override this to "int"
 * for historical compatibility reasons, so we allow that.
 */
#ifndef __ARCH_SI_BAND_T
#define __ARCH_SI_BAND_T long
#endif

#ifndef __ARCH_SI_CLOCK_T
#define __ARCH_SI_CLOCK_T __kernel_clock_t
#endif

#ifndef __ARCH_SI_ATTRIBUTES
#define __ARCH_SI_ATTRIBUTES
#endif

/*
 * Be careful when extending this union.  On 32bit siginfo_t is 32bit
 * aligned.  Which means that a 64bit field or any other field that
 * would increase the alignment of siginfo_t will break the ABI.
 */
union __sifields {
	/* kill() */
	struct {
		__kernel_pid_t _pid;	/* sender's pid */
		__kernel_uid32_t _uid;	/* sender's uid */
	} _kill;

	/* POSIX.1b timers */
	struct {
		__kernel_timer_t _tid;	/* timer id */
		int _overrun;		/* overrun count */
		sigval_t _sigval;	/* same as below */
		int _sys_private;       /* not to be passed to user */
	} _timer;

	/* POSIX.1b signals */
	struct {
		__kernel_pid_t _pid;	/* sender's pid */
		__kernel_uid32_t _uid;	/* sender's uid */
		sigval_t _sigval;
	} _rt;

	/* SIGCHLD */
	struct {
		__kernel_pid_t _pid;	/* which child */
		__kernel_uid32_t _uid;	/* sender's uid */
		int _status;		/* exit code */
		__ARCH_SI_CLOCK_T _utime;
		__ARCH_SI_CLOCK_T _stime;
	} _sigchld;

	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */
	struct {
		void *_addr; /* faulting insn/memory ref. */
#ifdef __ia64__
		int _imm;		/* immediate value for "break" */
		unsigned int _flags;	/* see ia64 si_flags */
		unsigned long _isr;	/* isr */
#endif

#define __ADDR_BND_PKEY_PAD  (__alignof__(void *) < sizeof(short) ? \
			      sizeof(short) : __alignof__(void *))
		union {
			/* used on alpha and sparc */
			int _trapno;	/* TRAP # which caused the signal */
			/*
			 * used when si_code=BUS_MCEERR_AR or
			 * used when si_code=BUS_MCEERR_AO
			 */
			short _addr_lsb; /* LSB of the reported address */
			/* used when si_code=SEGV_BNDERR */
			struct {
				char _dummy_bnd[__ADDR_BND_PKEY_PAD];
				void *_lower;
				void *_upper;
			} _addr_bnd;
			/* used when si_code=SEGV_PKUERR */
			struct {
				char _dummy_pkey[__ADDR_BND_PKEY_PAD];
				__u32 _pkey;
			} _addr_pkey;
			/* used when si_code=TRAP_PERF */
			struct {
				unsigned long _data;
				__u32 _type;
				__u32 _flags;
			} _perf;
		};
	} _sigfault;

	/* SIGPOLL */
	struct {
		__ARCH_SI_BAND_T _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
		int _fd;
	} _sigpoll;

	/* SIGSYS */
	struct {
		void *_call_addr; /* calling user insn */
		int _syscall;	/* triggering system call number */
		unsigned int _arch;	/* AUDIT_ARCH_* of syscall */
	} _sigsys;
};

#ifndef __ARCH_HAS_SWAPPED_SIGINFO
#define __SIGINFO 			\
struct {				\
	int si_signo;			\
	int si_errno;			\
	int si_code;			\
	union __sifields _sifields;	\
}
#else
#define __SIGINFO 			\
struct {				\
	int si_signo;			\
	int si_code;			\
	int si_errno;			\
	union __sifields _sifields;	\
}
#endif /* __ARCH_HAS_SWAPPED_SIGINFO */

typedef struct siginfo {
	union {
		__SIGINFO;
		int _si_pad[SI_MAX_SIZE/sizeof(int)];
	};
} __ARCH_SI_ATTRIBUTES siginfo_t;

/*
 * How these fields are to be accessed.
 */
#define si_pid		_sifields._kill._pid
#define si_uid		_sifields._kill._uid
#define si_tid		_sifields._timer._tid
#define si_overrun	_sifields._timer._overrun
#define si_sys_private  _sifields._timer._sys_private
#define si_status	_sifields._sigchld._status
#define si_utime	_sifields._sigchld._utime
#define si_stime	_sifields._sigchld._stime
#define si_value	_sifields._rt._sigval
#define si_int		_sifields._rt._sigval.sival_int
#define si_ptr		_sifields._rt._sigval.sival_ptr
#define si_addr		_sifields._sigfault._addr
#define si_trapno	_sifields._sigfault._trapno
#define si_addr_lsb	_sifields._sigfault._addr_lsb