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(-)sigreturn.2 (-26 / +2 lines)
Lines 43-75 Link Here
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.Sh SYNOPSIS
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.Sh SYNOPSIS
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.In signal.h
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.In signal.h
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.Pp
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.Pp
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.Bd -literal
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struct	sigcontext {
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	int	sc_onstack;		/* sigstack state to restore */
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	int	sc_mask;		/* signal mask to restore */
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	int	sc_esp;			/* machine state */
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	int	sc_ebp;
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	int	sc_isp;
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	int	sc_eip;
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	int	sc_efl;
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	int	sc_es;
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	int	sc_ds;
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	int	sc_cs;
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	int	sc_ss;
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	int	sc_edi;
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	int	sc_esi;
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	int	sc_ebx;
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	int	sc_edx;
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	int	sc_ecx;
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	int	sc_eax;
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#  define sc_sp sc_esp
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#  define sc_fp sc_ebp
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#  define sc_pc sc_eip
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#  define sc_ps sc_efl
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};
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.Ed
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.Ed
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.Ft int
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.Ft int
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.Fn sigreturn "struct sigcontext *scp"
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.Fn sigreturn "ucontext_t *ucp"
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.Sh DESCRIPTION
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.Sh DESCRIPTION
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.Fn Sigreturn
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.Fn Sigreturn
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allows users to atomically unmask, switch stacks,
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allows users to atomically unmask, switch stacks,
Lines 98-104 Link Here
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if one of the following occurs.
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if one of the following occurs.
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.Bl -tag -width Er
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.Bl -tag -width Er
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.It Bq Er EFAULT
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.It Bq Er EFAULT
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.Fa Scp
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.Fa Ucp
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points to memory that is not a valid part of the process
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points to memory that is not a valid part of the process
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address space.
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address space.
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.It Bq Er EINVAL
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.It Bq Er EINVAL

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