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RedHat 9 (Linux i386) - man page for sigreturn (redhat section 2)

SIGRETURN(2)			    Linux Programmer's Manual			     SIGRETURN(2)

NAME
       sigreturn - return from signal handler and cleanup stack frame

SYNOPSIS
       int sigreturn(unsigned long __unused);

DESCRIPTION
       When the Linux kernel creates the stack frame for a signal handler, a call to sigreturn is
       inserted into the stack frame so that the the signal  handler  will  call  sigreturn  upon
       return.	This  inserted	call  to  sigreturn  cleans  up the stack so that the process can
       restart from where it was interrupted by the signal.

RETURN VALUE
       sigreturn never returns.

WARNING
       The sigreturn call is used by the kernel to implement signal handlers. It should never  be
       called directly. Better yet, the specific use of the __unused argument varies depending on
       the architecture.

CONFORMING TO
       sigreturn is specific to Linux and should not be used in programs intended to be portable.

FILES
       /usr/src/linux/arch/i386/kernel/signal.c
       /usr/src/linux/arch/alpha/kernel/entry.S

SEE ALSO
       kill(2), signal(2), signal(7)

Linux 1.3.20				    1995-08-21				     SIGRETURN(2)


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