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

#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192
#endif

#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
typedef int greg_t, gregset_t[18];
typedef struct sigcontext
{
	unsigned long  r0,  r1,  r2,  r3;
	unsigned long  r4,  r5,  r6,  r7;
	unsigned long  r8,  r9, r10, r11;
	unsigned long r12, r13, r14, r15;
	unsigned long r16, r17, r18, r19;
	unsigned long r20, r21, r22, r23;
	unsigned long r24, r25, r26, r27;
	unsigned long r28, r29, r30, r31;
	unsigned long sa0;
	unsigned long lc0;
	unsigned long sa1;
	unsigned long lc1;
	unsigned long m0;
	unsigned long m1;
	unsigned long usr;
	unsigned long p3_0;
	unsigned long gp;
	unsigned long ugp;
	unsigned long pc;
	unsigned long cause;
	unsigned long badva;
	unsigned long pad1;
	unsigned long long pad2;
} mcontext_t;
#else
typedef struct {
	unsigned long __regs[48];
} __attribute__((__aligned__(8))) mcontext_t;
#endif

struct sigaltstack {
	void *ss_sp;
	int ss_flags;
	size_t ss_size;
};

typedef struct __ucontext {
	unsigned long uc_flags;
	struct __ucontext *uc_link;
	stack_t uc_stack;
	mcontext_t uc_mcontext;
	sigset_t uc_sigmask;
} ucontext_t;

#define SA_NOCLDSTOP  1
#define SA_NOCLDWAIT  2
#define SA_SIGINFO    4
#define SA_ONSTACK    0x08000000
#define SA_RESTART    0x10000000
#define SA_NODEFER    0x40000000
#define SA_RESETHAND  0x80000000
#define SA_RESTORER   0x04000000

#endif

#define SIGHUP    1
#define SIGINT    2
#define SIGQUIT   3
#define SIGILL    4
#define SIGTRAP   5
#define SIGABRT   6
#define SIGIOT    SIGABRT
#define SIGBUS    7
#define SIGFPE    8
#define SIGKILL   9
#define SIGUSR1   10
#define SIGSEGV   11
#define SIGUSR2   12
#define SIGPIPE   13
#define SIGALRM   14
#define SIGTERM   15
#define SIGSTKFLT 16
#define SIGCHLD   17
#define SIGCONT   18
#define SIGSTOP   19
#define SIGTSTP   20
#define SIGTTIN   21
#define SIGTTOU   22
#define SIGURG    23
#define SIGXCPU   24
#define SIGXFSZ   25
#define SIGVTALRM 26
#define SIGPROF   27
#define SIGWINCH  28
#define SIGIO     29
#define SIGPOLL   29
#define SIGPWR    30
#define SIGSYS    31
#define SIGUNUSED SIGSYS

#define _NSIG 65