[wasi-libc.git] / libc-top-half / musl / include / signal.h

#ifndef _WASI_EMULATED_SIGNAL
#error "wasm lacks signal support; to enable minimal signal emulation, \
compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
#else
#ifndef _SIGNAL_H
#define _SIGNAL_H

#ifdef __cplusplus
extern "C" {
#endif

#include <features.h>

#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
 || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
 || defined(_BSD_SOURCE)

#ifdef __wasilibc_unmodified_upstream /* WASI has no ucontext support */
#ifdef _GNU_SOURCE
#define __ucontext ucontext
#endif

#define __NEED_size_t
#define __NEED_pid_t
#define __NEED_uid_t
#define __NEED_struct_timespec
#define __NEED_pthread_t
#define __NEED_pthread_attr_t
#define __NEED_time_t
#define __NEED_clock_t
#define __NEED_sigset_t

#include <bits/alltypes.h>

#define SIG_BLOCK     0
#define SIG_UNBLOCK   1
#define SIG_SETMASK   2

#define SI_ASYNCNL (-60)
#define SI_TKILL (-6)
#define SI_SIGIO (-5)
#define SI_ASYNCIO (-4)
#define SI_MESGQ (-3)
#define SI_TIMER (-2)
#define SI_QUEUE (-1)
#define SI_USER 0
#define SI_KERNEL 128

typedef struct sigaltstack stack_t;
#endif

#endif

#include <bits/signal.h>

#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
 || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
 || defined(_BSD_SOURCE)

#ifdef __wasilibc_unmodified_upstream /* WASI has no sigaction */
#define SIG_HOLD ((void (*)(int)) 2)

#define FPE_INTDIV 1
#define FPE_INTOVF 2
#define FPE_FLTDIV 3
#define FPE_FLTOVF 4
#define FPE_FLTUND 5
#define FPE_FLTRES 6
#define FPE_FLTINV 7
#define FPE_FLTSUB 8

#define ILL_ILLOPC 1
#define ILL_ILLOPN 2
#define ILL_ILLADR 3
#define ILL_ILLTRP 4
#define ILL_PRVOPC 5
#define ILL_PRVREG 6
#define ILL_COPROC 7
#define ILL_BADSTK 8

#define SEGV_MAPERR 1
#define SEGV_ACCERR 2
#define SEGV_BNDERR 3
#define SEGV_PKUERR 4

#define BUS_ADRALN 1
#define BUS_ADRERR 2
#define BUS_OBJERR 3
#define BUS_MCEERR_AR 4
#define BUS_MCEERR_AO 5

#define CLD_EXITED 1
#define CLD_KILLED 2
#define CLD_DUMPED 3
#define CLD_TRAPPED 4
#define CLD_STOPPED 5
#define CLD_CONTINUED 6

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

typedef struct {
#ifdef __SI_SWAP_ERRNO_CODE
	int si_signo, si_code, si_errno;
#else
	int si_signo, si_errno, si_code;
#endif
	union {
		char __pad[128 - 2*sizeof(int) - sizeof(long)];
		struct {
			union {
				struct {
					pid_t si_pid;
					uid_t si_uid;
				} __piduid;
				struct {
					int si_timerid;
					int si_overrun;
				} __timer;
			} __first;
			union {
				union sigval si_value;
				struct {
					int si_status;
					clock_t si_utime, si_stime;
				} __sigchld;
			} __second;
		} __si_common;
		struct {
			void *si_addr;
			short si_addr_lsb;
			union {
				struct {
					void *si_lower;
					void *si_upper;
				} __addr_bnd;
				unsigned si_pkey;
			} __first;
		} __sigfault;
		struct {
			long si_band;
			int si_fd;
		} __sigpoll;
		struct {
			void *si_call_addr;
			int si_syscall;
			unsigned si_arch;
		} __sigsys;
	} __si_fields;
} siginfo_t;
#define si_pid     __si_fields.__si_common.__first.__piduid.si_pid
#define si_uid     __si_fields.__si_common.__first.__piduid.si_uid
#define si_status  __si_fields.__si_common.__second.__sigchld.si_status
#define si_utime   __si_fields.__si_common.__second.__sigchld.si_utime
#define si_stime   __si_fields.__si_common.__second.__sigchld.si_stime
#define si_value   __si_fields.__si_common.__second.si_value
#define si_addr    __si_fields.__sigfault.si_addr
#define si_addr_lsb __si_fields.__sigfault.si_addr_lsb
#define si_lower   __si_fields.__sigfault.__first.__addr_bnd.si_lower
#define si_upper   __si_fields.__sigfault.__first.__addr_bnd.si_upper
#define si_pkey    __si_fields.__sigfault.__first.si_pkey
#define si_band    __si_fields.__sigpoll.si_band
#define si_fd      __si_fields.__sigpoll.si_fd
#define si_timerid __si_fields.__si_common.__first.__timer.si_timerid
#define si_overrun __si_fields.__si_common.__first.__timer.si_overrun
#define si_ptr     si_value.sival_ptr
#define si_int     si_value.sival_int
#define si_call_addr __si_fields.__sigsys.si_call_addr
#define si_syscall __si_fields.__sigsys.si_syscall
#define si_arch    __si_fields.__sigsys.si_arch

struct sigaction {
	union {
		void (*sa_handler)(int);
		void (*sa_sigaction)(int, siginfo_t *, void *);
	} __sa_handler;
	sigset_t sa_mask;
	int sa_flags;
	void (*sa_restorer)(void);
};
#define sa_handler   __sa_handler.sa_handler
#define sa_sigaction __sa_handler.sa_sigaction

struct sigevent {
	union sigval sigev_value;
	int sigev_signo;
	int sigev_notify;
	void (*sigev_notify_function)(union sigval);
	pthread_attr_t *sigev_notify_attributes;
	char __pad[56-3*sizeof(long)];
};

#define SIGEV_SIGNAL 0
#define SIGEV_NONE 1
#define SIGEV_THREAD 2
#endif

#ifdef __wasilibc_unmodified_upstream /* WASI has no realtime signals */
int __libc_current_sigrtmin(void);
int __libc_current_sigrtmax(void);

#define SIGRTMIN  (__libc_current_sigrtmin())
#define SIGRTMAX  (__libc_current_sigrtmax())
#endif

#ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
int kill(pid_t, int);

int sigemptyset(sigset_t *);
int sigfillset(sigset_t *);
int sigaddset(sigset_t *, int);
int sigdelset(sigset_t *, int);
int sigismember(const sigset_t *, int);

int sigprocmask(int, const sigset_t *__restrict, sigset_t *__restrict);
int sigsuspend(const sigset_t *);
int sigaction(int, const struct sigaction *__restrict, struct sigaction *__restrict);
int sigpending(sigset_t *);
int sigwait(const sigset_t *__restrict, int *__restrict);
int sigwaitinfo(const sigset_t *__restrict, siginfo_t *__restrict);
int sigtimedwait(const sigset_t *__restrict, siginfo_t *__restrict, const struct timespec *__restrict);
int sigqueue(pid_t, int, union sigval);
#endif

#ifdef __wasilibc_unmodified_upstream /* WASI has no threads yet */
int pthread_sigmask(int, const sigset_t *__restrict, sigset_t *__restrict);
int pthread_kill(pthread_t, int);
#endif

#ifdef __wasilibc_unmodified_upstream /* WASI has no siginfo */
void psiginfo(const siginfo_t *, const char *);
#endif
void psignal(int, const char *);

#endif

#ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
#if defined(_XOPEN_SOURCE) || defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
int killpg(pid_t, int);
int sigaltstack(const stack_t *__restrict, stack_t *__restrict);
int sighold(int);
int sigignore(int);
int siginterrupt(int, int);
int sigpause(int);
int sigrelse(int);
void (*sigset(int, void (*)(int)))(int);
#define TRAP_BRKPT 1
#define TRAP_TRACE 2
#define TRAP_BRANCH 3
#define TRAP_HWBKPT 4
#define TRAP_UNK 5
#define POLL_IN 1
#define POLL_OUT 2
#define POLL_MSG 3
#define POLL_ERR 4
#define POLL_PRI 5
#define POLL_HUP 6
#define SS_ONSTACK    1
#define SS_DISABLE    2
#define SS_AUTODISARM (1U << 31)
#define SS_FLAG_BITS SS_AUTODISARM
#endif
#endif

#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
#define NSIG _NSIG
typedef void (*sig_t)(int);
#endif

#ifdef _GNU_SOURCE
typedef void (*sighandler_t)(int);
void (*bsd_signal(int, void (*)(int)))(int);
#ifdef __wasilibc_unmodified_upstream /* WASI has no signal sets */
int sigisemptyset(const sigset_t *);
int sigorset (sigset_t *, const sigset_t *, const sigset_t *);
int sigandset(sigset_t *, const sigset_t *, const sigset_t *);

#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT SA_RESETHAND
#endif
#endif

#ifdef __wasilibc_unmodified_upstream /* 1 is a valid function pointer on wasm */
#define SIG_ERR  ((void (*)(int))-1)
#define SIG_DFL  ((void (*)(int)) 0)
#define SIG_IGN  ((void (*)(int)) 1)
#else
void __SIG_ERR(int);
void __SIG_IGN(int);
#define SIG_ERR  (__SIG_ERR)
#define SIG_DFL  ((void (*)(int)) 0)
#define SIG_IGN  (__SIG_IGN)
#endif

#ifdef __wasilibc_unmodified_upstream /* Make sig_atomic_t 64-bit on wasm64 */
typedef int sig_atomic_t;
#else
typedef long sig_atomic_t;
#endif

void (*signal(int, void (*)(int)))(int);
int raise(int);

#ifdef __wasilibc_unmodified_upstream /* WASI has no sigtimedwait */
#if _REDIR_TIME64
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
 || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
 || defined(_BSD_SOURCE)
__REDIR(sigtimedwait, __sigtimedwait_time64);
#endif
#endif
#endif

#ifdef __cplusplus
}
#endif

#endif
#endif
Commit	Line	Data
d1cd4f48 DG	1	#ifndef _WASI_EMULATED_SIGNAL
	2	#error "wasm lacks signal support; to enable minimal signal emulation, \
	3	compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
	4	#else
320054e8 DG	5	#ifndef _SIGNAL_H
	6	#define _SIGNAL_H
	7
	8	#ifdef __cplusplus
	9	extern "C" {
	10	#endif
	11
	12	#include <features.h>
	13
	14	#if defined(_POSIX_SOURCE) \|\| defined(_POSIX_C_SOURCE) \
	15	\|\| defined(_XOPEN_SOURCE) \|\| defined(_GNU_SOURCE) \
	16	\|\| defined(_BSD_SOURCE)
	17
079d7bda	18	#ifdef __wasilibc_unmodified_upstream /* WASI has no ucontext support */
320054e8 DG	19	#ifdef _GNU_SOURCE
	20	#define __ucontext ucontext
	21	#endif
	22
	23	#define __NEED_size_t
	24	#define __NEED_pid_t
	25	#define __NEED_uid_t
	26	#define __NEED_struct_timespec
	27	#define __NEED_pthread_t
	28	#define __NEED_pthread_attr_t
	29	#define __NEED_time_t
	30	#define __NEED_clock_t
	31	#define __NEED_sigset_t
	32
	33	#include <bits/alltypes.h>
	34
	35	#define SIG_BLOCK 0
	36	#define SIG_UNBLOCK 1
	37	#define SIG_SETMASK 2
	38
	39	#define SI_ASYNCNL (-60)
	40	#define SI_TKILL (-6)
	41	#define SI_SIGIO (-5)
	42	#define SI_ASYNCIO (-4)
	43	#define SI_MESGQ (-3)
	44	#define SI_TIMER (-2)
	45	#define SI_QUEUE (-1)
	46	#define SI_USER 0
	47	#define SI_KERNEL 128
	48
	49	typedef struct sigaltstack stack_t;
d1cd4f48	50	#endif
320054e8 DG	51
	52	#endif
	53
	54	#include <bits/signal.h>
	55
	56	#if defined(_POSIX_SOURCE) \|\| defined(_POSIX_C_SOURCE) \
	57	\|\| defined(_XOPEN_SOURCE) \|\| defined(_GNU_SOURCE) \
	58	\|\| defined(_BSD_SOURCE)
	59
d1cd4f48	60	#ifdef __wasilibc_unmodified_upstream /* WASI has no sigaction */
320054e8 DG	61	#define SIG_HOLD ((void (*)(int)) 2)
	62
	63	#define FPE_INTDIV 1
	64	#define FPE_INTOVF 2
	65	#define FPE_FLTDIV 3
	66	#define FPE_FLTOVF 4
	67	#define FPE_FLTUND 5
	68	#define FPE_FLTRES 6
	69	#define FPE_FLTINV 7
	70	#define FPE_FLTSUB 8
	71
	72	#define ILL_ILLOPC 1
	73	#define ILL_ILLOPN 2
	74	#define ILL_ILLADR 3
	75	#define ILL_ILLTRP 4
	76	#define ILL_PRVOPC 5
	77	#define ILL_PRVREG 6
	78	#define ILL_COPROC 7
	79	#define ILL_BADSTK 8
	80
	81	#define SEGV_MAPERR 1
	82	#define SEGV_ACCERR 2
	83	#define SEGV_BNDERR 3
	84	#define SEGV_PKUERR 4
	85
	86	#define BUS_ADRALN 1
	87	#define BUS_ADRERR 2
	88	#define BUS_OBJERR 3
	89	#define BUS_MCEERR_AR 4
	90	#define BUS_MCEERR_AO 5
	91
	92	#define CLD_EXITED 1
	93	#define CLD_KILLED 2
	94	#define CLD_DUMPED 3
	95	#define CLD_TRAPPED 4
	96	#define CLD_STOPPED 5
	97	#define CLD_CONTINUED 6
	98
	99	union sigval {
	100	int sival_int;
	101	void *sival_ptr;
	102	};
	103
	104	typedef struct {
	105	#ifdef __SI_SWAP_ERRNO_CODE
	106	int si_signo, si_code, si_errno;
	107	#else
	108	int si_signo, si_errno, si_code;
	109	#endif
	110	union {
	111	char __pad[128 - 2*sizeof(int) - sizeof(long)];
	112	struct {
	113	union {
	114	struct {
	115	pid_t si_pid;
	116	uid_t si_uid;
	117	} __piduid;
	118	struct {
	119	int si_timerid;
	120	int si_overrun;
	121	} __timer;
	122	} __first;
	123	union {
	124	union sigval si_value;
125	struct {
126	int si_status;
127	clock_t si_utime, si_stime;
128	} __sigchld;
129	} __second;
130	} __si_common;
131	struct {
132	void *si_addr;
133	short si_addr_lsb;
134	union {
135	struct {
136	void *si_lower;
137	void *si_upper;
138	} __addr_bnd;
139	unsigned si_pkey;
140	} __first;
141	} __sigfault;
142	struct {
143	long si_band;
144	int si_fd;
145	} __sigpoll;
146	struct {
147	void *si_call_addr;
148	int si_syscall;
149	unsigned si_arch;
150	} __sigsys;
151	} __si_fields;
152	} siginfo_t;
153	#define si_pid __si_fields.__si_common.__first.__piduid.si_pid
154	#define si_uid __si_fields.__si_common.__first.__piduid.si_uid
155	#define si_status __si_fields.__si_common.__second.__sigchld.si_status
156	#define si_utime __si_fields.__si_common.__second.__sigchld.si_utime
157	#define si_stime __si_fields.__si_common.__second.__sigchld.si_stime
158	#define si_value __si_fields.__si_common.__second.si_value
159	#define si_addr __si_fields.__sigfault.si_addr
160	#define si_addr_lsb __si_fields.__sigfault.si_addr_lsb
161	#define si_lower __si_fields.__sigfault.__first.__addr_bnd.si_lower
162	#define si_upper __si_fields.__sigfault.__first.__addr_bnd.si_upper
163	#define si_pkey __si_fields.__sigfault.__first.si_pkey
164	#define si_band __si_fields.__sigpoll.si_band
165	#define si_fd __si_fields.__sigpoll.si_fd
166	#define si_timerid __si_fields.__si_common.__first.__timer.si_timerid
167	#define si_overrun __si_fields.__si_common.__first.__timer.si_overrun
168	#define si_ptr si_value.sival_ptr
169	#define si_int si_value.sival_int
170	#define si_call_addr __si_fields.__sigsys.si_call_addr
171	#define si_syscall __si_fields.__sigsys.si_syscall
172	#define si_arch __si_fields.__sigsys.si_arch
173
174	struct sigaction {
175	union {
176	void (*sa_handler)(int);
177	void (sa_sigaction)(int, siginfo_t , void *);
178	} __sa_handler;
179	sigset_t sa_mask;
180	int sa_flags;
181	void (*sa_restorer)(void);
182	};
183	#define sa_handler __sa_handler.sa_handler
184	#define sa_sigaction __sa_handler.sa_sigaction
185
186	struct sigevent {
187	union sigval sigev_value;
188	int sigev_signo;
189	int sigev_notify;
190	void (*sigev_notify_function)(union sigval);
191	pthread_attr_t *sigev_notify_attributes;
192	char __pad[56-3*sizeof(long)];
193	};
194
195	#define SIGEV_SIGNAL 0
196	#define SIGEV_NONE 1
197	#define SIGEV_THREAD 2
d1cd4f48	198	#endif
320054e8	199
e5f14be3	200	#ifdef __wasilibc_unmodified_upstream /* WASI has no realtime signals */
320054e8 DG	201	int __libc_current_sigrtmin(void);
	202	int __libc_current_sigrtmax(void);
	203
	204	#define SIGRTMIN (__libc_current_sigrtmin())
	205	#define SIGRTMAX (__libc_current_sigrtmax())
	206	#endif
	207
e5f14be3	208	#ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
320054e8 DG	209	int kill(pid_t, int);
	210
	211	int sigemptyset(sigset_t *);
	212	int sigfillset(sigset_t *);
	213	int sigaddset(sigset_t *, int);
	214	int sigdelset(sigset_t *, int);
	215	int sigismember(const sigset_t *, int);
	216
	217	int sigprocmask(int, const sigset_t __restrict, sigset_t __restrict);
	218	int sigsuspend(const sigset_t *);
	219	int sigaction(int, const struct sigaction __restrict, struct sigaction __restrict);
	220	int sigpending(sigset_t *);
	221	int sigwait(const sigset_t __restrict, int __restrict);
	222	int sigwaitinfo(const sigset_t __restrict, siginfo_t __restrict);
	223	int sigtimedwait(const sigset_t __restrict, siginfo_t __restrict, const struct timespec *__restrict);
	224	int sigqueue(pid_t, int, union sigval);
	225	#endif
	226
d1cd4f48	227	#ifdef __wasilibc_unmodified_upstream /* WASI has no threads yet */
320054e8 DG	228	int pthread_sigmask(int, const sigset_t __restrict, sigset_t __restrict);
320054e8 DG	229	int pthread_kill(pthread_t, int);
d1cd4f48	230	#endif
320054e8	231
d1cd4f48	232	#ifdef __wasilibc_unmodified_upstream /* WASI has no siginfo */
320054e8	233	void psiginfo(const siginfo_t , const char );
320054e8	234	#endif
d1cd4f48	235	void psignal(int, const char *);
320054e8 DG	236
	237	#endif
	238
e5f14be3	239	#ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
320054e8 DG	240	#if defined(_XOPEN_SOURCE) \|\| defined(_BSD_SOURCE) \|\| defined(_GNU_SOURCE)
	241	int killpg(pid_t, int);
	242	int sigaltstack(const stack_t __restrict, stack_t __restrict);
	243	int sighold(int);
	244	int sigignore(int);
	245	int siginterrupt(int, int);
	246	int sigpause(int);
	247	int sigrelse(int);
	248	void (sigset(int, void ()(int)))(int);
	249	#define TRAP_BRKPT 1
	250	#define TRAP_TRACE 2
	251	#define TRAP_BRANCH 3
	252	#define TRAP_HWBKPT 4
	253	#define TRAP_UNK 5
	254	#define POLL_IN 1
	255	#define POLL_OUT 2
	256	#define POLL_MSG 3
	257	#define POLL_ERR 4
	258	#define POLL_PRI 5
	259	#define POLL_HUP 6
	260	#define SS_ONSTACK 1
	261	#define SS_DISABLE 2
	262	#define SS_AUTODISARM (1U << 31)
	263	#define SS_FLAG_BITS SS_AUTODISARM
	264	#endif
	265	#endif
	266
320054e8 DG	267	#if defined(_BSD_SOURCE) \|\| defined(_GNU_SOURCE)
	268	#define NSIG _NSIG
	269	typedef void (*sig_t)(int);
	270	#endif
	271
	272	#ifdef _GNU_SOURCE
	273	typedef void (*sighandler_t)(int);
	274	void (bsd_signal(int, void ()(int)))(int);
d1cd4f48	275	#ifdef __wasilibc_unmodified_upstream /* WASI has no signal sets */
320054e8 DG	276	int sigisemptyset(const sigset_t *);
	277	int sigorset (sigset_t , const sigset_t , const sigset_t *);
	278	int sigandset(sigset_t , const sigset_t , const sigset_t *);
	279
	280	#define SA_NOMASK SA_NODEFER
	281	#define SA_ONESHOT SA_RESETHAND
	282	#endif
d1cd4f48	283	#endif
320054e8	284
d1cd4f48	285	#ifdef __wasilibc_unmodified_upstream /* 1 is a valid function pointer on wasm */
320054e8 DG	286	#define SIG_ERR ((void (*)(int))-1)
	287	#define SIG_DFL ((void (*)(int)) 0)
	288	#define SIG_IGN ((void (*)(int)) 1)
d1cd4f48 DG	289	#else
	290	void __SIG_ERR(int);
	291	void __SIG_IGN(int);
	292	#define SIG_ERR (__SIG_ERR)
	293	#define SIG_DFL ((void (*)(int)) 0)
	294	#define SIG_IGN (__SIG_IGN)
320054e8 DG	295	#endif
320054e8 DG	296
d1cd4f48	297	#ifdef __wasilibc_unmodified_upstream /* Make sig_atomic_t 64-bit on wasm64 */
320054e8	298	typedef int sig_atomic_t;
d1cd4f48 DG	299	#else
	300	typedef long sig_atomic_t;
	301	#endif
320054e8	302
320054e8	303	void (signal(int, void ()(int)))(int);
320054e8 DG	304	int raise(int);
320054e8 DG	305
d1cd4f48	306	#ifdef __wasilibc_unmodified_upstream /* WASI has no sigtimedwait */
575e1579 DG	307	#if _REDIR_TIME64
	308	#if defined(_POSIX_SOURCE) \|\| defined(_POSIX_C_SOURCE) \
	309	\|\| defined(_XOPEN_SOURCE) \|\| defined(_GNU_SOURCE) \
	310	\|\| defined(_BSD_SOURCE)
	311	__REDIR(sigtimedwait, __sigtimedwait_time64);
	312	#endif
	313	#endif
d1cd4f48	314	#endif
575e1579	315
320054e8 DG	316	#ifdef __cplusplus
	317	}
	318	#endif
	319
	320	#endif
d1cd4f48	321	#endif