4.1cBSD/usr/src/lib/libc/sys/fork.c

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/* fork.c 4.1 82/12/04 */

#include "SYS.h"

SYSCALL(fork)
	jlbc	r1,1f	# parent, since r1 == 0 in parent, 1 in child
	clrl	r0
1:
	ret		# pid = fork()