syscall man page on Ultrix

syscall man page on Ultrix

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syscall(2)							    syscall(2)

Name
       syscall - indirect system call

Syntax
       syscall(number, arg, ...)

Description
       The system call performs the system call whose assembly language inter‐
       face has the specified number, register arguments r0 and r1,  and  fur‐
       ther arguments arg.

       The r0 value of the system call is returned.

Restrictions
       There is no way to simulate system calls such as which return values in
       register r1.

Diagnostics
       When the C-bit is set, returns -1 and sets the external variable errno.

See Also
       errno(2), pipe(2)

				      VAX			    syscall(2)

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