Differential D20946 Diff 60566 lib/libthr/arch/powerpc/powerpc/_umtx_op_err.S

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lib/libthr/arch/powerpc/powerpc/_umtx_op_err.S

				/*-
				* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
				*
				* Copyright (c) 2019 Brandon Bergren <git@bdragon.rtk0.net>
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*
				* $FreeBSD$
				*/

				#include <machine/asm.h>
				#include <sys/syscall.h>

				.text
				.align 2
				ENTRY(_umtx_op_err)
				li %r0, SYS__umtx_op
				sc
				blr
				END(_umtx_op_err)

				.section .note.GNU-stack,"",%progbits
				jhibbitsUnsubmitted Not Done Inline Actions This is unnecessary. On success %r3 will always be 0 (see exec_machdep.c:916-925, and trap.c:691), so there's no need for the safety belt here. jhibbits: This is unnecessary. On success %r3 will always be 0 (see exec_machdep.c:916-925, and trap.c…