1#ifndef _X8664_SIGINFO_H
2#define _X8664_SIGINFO_H
3
4#include <linux/types.h>
5
6typedef union sigval {
7	int sival_int;
8	void *sival_ptr;
9} sigval_t;
10
11#define SI_MAX_SIZE	128
12#define SI_PAD_SIZE	((SI_MAX_SIZE/sizeof(int)) - 3)
13
14typedef struct siginfo {
15	int si_signo;
16	int si_errno;
17	int si_code;
18
19	union {
20		int _pad[SI_PAD_SIZE];
21
22		/* kill() */
23		struct {
24			pid_t _pid;		/* sender's pid */
25			uid_t _uid;		/* sender's uid */
26		} _kill;
27
28		/* POSIX.1b timers */
29		struct {
30			unsigned int _timer1;
31			unsigned int _timer2;
32		} _timer;
33
34		/* POSIX.1b signals */
35		struct {
36			pid_t _pid;		/* sender's pid */
37			uid_t _uid;		/* sender's uid */
38			sigval_t _sigval;
39		} _rt;
40
41		/* SIGCHLD */
42		struct {
43			pid_t _pid;		/* which child */
44			uid_t _uid;		/* sender's uid */
45			int _status;		/* exit code */
46			clock_t _utime;
47			clock_t _stime;
48		} _sigchld;
49
50		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
51		struct {
52			void *_addr; /* faulting insn/memory ref. */
53		} _sigfault;
54
55		/* SIGPOLL */
56		struct {
57			int _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
58			int _fd;
59		} _sigpoll;
60	} _sifields;
61} siginfo_t;
62
63/*
64 * How these fields are to be accessed.
65 */
66#define si_pid		_sifields._kill._pid
67#define si_uid		_sifields._kill._uid
68#define si_status	_sifields._sigchld._status
69#define si_utime	_sifields._sigchld._utime
70#define si_stime	_sifields._sigchld._stime
71#define si_value	_sifields._rt._sigval
72#define si_int		_sifields._rt._sigval.sival_int
73#define si_ptr		_sifields._rt._sigval.sival_ptr
74#define si_addr		_sifields._sigfault._addr
75#define si_band		_sifields._sigpoll._band
76#define si_fd		_sifields._sigpoll._fd
77
78#ifdef __KERNEL__
79#define __SI_MASK	0xffff0000
80#define __SI_KILL	(0 << 16)
81#define __SI_TIMER	(1 << 16)
82#define __SI_POLL	(2 << 16)
83#define __SI_FAULT	(3 << 16)
84#define __SI_CHLD	(4 << 16)
85#define __SI_RT		(5 << 16)
86#define __SI_CODE(T,N)	((T) << 16 | ((N) & 0xffff))
87#else
88#define __SI_KILL	0
89#define __SI_TIMER	0
90#define __SI_POLL	0
91#define __SI_FAULT	0
92#define __SI_CHLD	0
93#define __SI_RT		0
94#define __SI_CODE(T,N)	(N)
95#endif
96
97/*
98 * si_code values
99 * Digital reserves positive values for kernel-generated signals.
100 * ... And Linux ignores that convention -AK.
101 */
102#define SI_USER		0		/* sent by kill, sigsend, raise */
103#define SI_KERNEL	0x80		/* sent by the kernel from somewhere */
104#define SI_QUEUE	-1		/* sent by sigqueue */
105#define SI_TIMER __SI_CODE(__SI_TIMER,-2) /* sent by timer expiration */
106#define SI_MESGQ	-3		/* sent by real time mesq state change */
107#define SI_ASYNCIO	-4		/* sent by AIO completion */
108#define SI_SIGIO	-5		/* sent by queued SIGIO */
109#define SI_TKILL	-6		/* sent by tkill system call */
110
111#define SI_FROMUSER(siptr)	((siptr)->si_code <= 0)
112#define SI_FROMKERNEL(siptr)	((siptr)->si_code > 0)
113
114/*
115 * SIGILL si_codes
116 */
117#define ILL_ILLOPC	(__SI_FAULT|1)	/* illegal opcode */
118#define ILL_ILLOPN	(__SI_FAULT|2)	/* illegal operand */
119#define ILL_ILLADR	(__SI_FAULT|3)	/* illegal addressing mode */
120#define ILL_ILLTRP	(__SI_FAULT|4)	/* illegal trap */
121#define ILL_PRVOPC	(__SI_FAULT|5)	/* privileged opcode */
122#define ILL_PRVREG	(__SI_FAULT|6)	/* privileged register */
123#define ILL_COPROC	(__SI_FAULT|7)	/* coprocessor error */
124#define ILL_BADSTK	(__SI_FAULT|8)	/* internal stack error */
125#define NSIGILL		8
126
127/*
128 * SIGFPE si_codes
129 */
130#define FPE_INTDIV	(__SI_FAULT|1)	/* integer divide by zero */
131#define FPE_INTOVF	(__SI_FAULT|2)	/* integer overflow */
132#define FPE_FLTDIV	(__SI_FAULT|3)	/* floating point divide by zero */
133#define FPE_FLTOVF	(__SI_FAULT|4)	/* floating point overflow */
134#define FPE_FLTUND	(__SI_FAULT|5)	/* floating point underflow */
135#define FPE_FLTRES	(__SI_FAULT|6)	/* floating point inexact result */
136#define FPE_FLTINV	(__SI_FAULT|7)	/* floating point invalid operation */
137#define FPE_FLTSUB	(__SI_FAULT|8)	/* subscript out of range */
138#define NSIGFPE		8
139
140/*
141 * SIGSEGV si_codes
142 */
143#define SEGV_MAPERR	(__SI_FAULT|1)	/* address not mapped to object */
144#define SEGV_ACCERR	(__SI_FAULT|2)	/* invalid permissions for mapped object */
145#define NSIGSEGV	2
146
147/*
148 * SIGBUS si_codes
149 */
150#define BUS_ADRALN	(__SI_FAULT|1)	/* invalid address alignment */
151#define BUS_ADRERR	(__SI_FAULT|2)	/* non-existant physical address */
152#define BUS_OBJERR	(__SI_FAULT|3)	/* object specific hardware error */
153#define NSIGBUS		3
154
155/*
156 * SIGTRAP si_codes
157 */
158#define TRAP_BRKPT	(__SI_FAULT|1)	/* process breakpoint */
159#define TRAP_TRACE	(__SI_FAULT|2)	/* process trace trap */
160#define NSIGTRAP	2
161
162/*
163 * SIGCHLD si_codes
164 */
165#define CLD_EXITED	(__SI_CHLD|1)	/* child has exited */
166#define CLD_KILLED	(__SI_CHLD|2)	/* child was killed */
167#define CLD_DUMPED	(__SI_CHLD|3)	/* child terminated abnormally */
168#define CLD_TRAPPED	(__SI_CHLD|4)	/* traced child has trapped */
169#define CLD_STOPPED	(__SI_CHLD|5)	/* child has stopped */
170#define CLD_CONTINUED	(__SI_CHLD|6)	/* stopped child has continued */
171#define NSIGCHLD	6
172
173/*
174 * SIGPOLL si_codes
175 */
176#define POLL_IN		(__SI_POLL|1)	/* data input available */
177#define POLL_OUT	(__SI_POLL|2)	/* output buffers available */
178#define POLL_MSG	(__SI_POLL|3)	/* input message available */
179#define POLL_ERR	(__SI_POLL|4)	/* i/o error */
180#define POLL_PRI	(__SI_POLL|5)	/* high priority input available */
181#define POLL_HUP	(__SI_POLL|6)	/* device disconnected */
182#define NSIGPOLL	6
183
184/*
185 * sigevent definitions
186 *
187 * It seems likely that SIGEV_THREAD will have to be handled from
188 * userspace, libpthread transmuting it to SIGEV_SIGNAL, which the
189 * thread manager then catches and does the appropriate nonsense.
190 * However, everything is written out here so as to not get lost.
191 */
192#define SIGEV_SIGNAL	0	/* notify via signal */
193#define SIGEV_NONE	1	/* other notification: meaningless */
194#define SIGEV_THREAD	2	/* deliver via thread creation */
195
196#define SIGEV_MAX_SIZE	64
197#define SIGEV_PAD_SIZE	((SIGEV_MAX_SIZE/sizeof(int)) - 3)
198
199typedef struct sigevent {
200	sigval_t sigev_value;
201	int sigev_signo;
202	int sigev_notify;
203	union {
204		int _pad[SIGEV_PAD_SIZE];
205
206		struct {
207			void (*_function)(sigval_t);
208			void *_attribute;	/* really pthread_attr_t */
209		} _sigev_thread;
210	} _sigev_un;
211} sigevent_t;
212
213#define sigev_notify_function	_sigev_un._sigev_thread._function
214#define sigev_notify_attributes	_sigev_un._sigev_thread._attribute
215
216#ifdef __KERNEL__
217#include <linux/string.h>
218
219extern inline void copy_siginfo(siginfo_t *to, siginfo_t *from)
220{
221	if (from->si_code < 0)
222		memcpy(to, from, sizeof(siginfo_t));
223	else
224		/* _sigchld is currently the largest know union member */
225		memcpy(to, from, 3*sizeof(int) + sizeof(from->_sifields._sigchld));
226}
227
228extern int copy_siginfo_to_user(siginfo_t *to, siginfo_t *from);
229
230#endif /* __KERNEL__ */
231
232#endif
233