u_write.S « src - bsdsetsid - Minimal implementation of the Linux(R) utility setsid(1) for FreeBSD

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.text
.globl u_write

u_write:
	movq	$0x4, %rax
	syscall
	movq	%rax, %rcx
	jc		u_err
	movq	%rcx, %rax
	retq

u_err:
	movq	$0xffffffffffffffff, %rax
	retq