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#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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typedef unsigned long greg_t, gregset_t[48];
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unsigned vrregs[32][4];
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unsigned long _unused[4];
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unsigned long handler;
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unsigned long oldmask;
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__attribute__((__aligned__(16)))
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long __regs[48+68+4*32+4]
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__attribute__((__aligned__(16)))
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typedef struct __ucontext {
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unsigned long uc_flags;
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struct __ucontext *uc_link;
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mcontext_t uc_mcontext;
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#define SA_NOCLDSTOP 1U
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#define SA_NOCLDWAIT 2U
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#define SA_ONSTACK 0x08000000U
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#define SA_RESTART 0x10000000U
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#define SA_NODEFER 0x40000000U
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#define SA_RESETHAND 0x80000000U
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#define SA_RESTORER 0x04000000U
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#define SIGIOT SIGABRT
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#define SIGUNUSED SIGSYS