1*ce38bb7aSguenther/* $OpenBSD: syscall.S,v 1.9 2023/05/11 19:35:50 guenther Exp $ */ 2118f6189Smickey/* $NetBSD: syscall.S,v 1.2 2002/06/03 18:30:33 fvdl Exp $ */ 3118f6189Smickey 4118f6189Smickey/*- 5118f6189Smickey * Copyright (c) 1990 The Regents of the University of California. 6118f6189Smickey * All rights reserved. 7118f6189Smickey * 8118f6189Smickey * This code is derived from software contributed to Berkeley by 9118f6189Smickey * William Jolitz. 10118f6189Smickey * 11118f6189Smickey * Redistribution and use in source and binary forms, with or without 12118f6189Smickey * modification, are permitted provided that the following conditions 13118f6189Smickey * are met: 14118f6189Smickey * 1. Redistributions of source code must retain the above copyright 15118f6189Smickey * notice, this list of conditions and the following disclaimer. 16118f6189Smickey * 2. Redistributions in binary form must reproduce the above copyright 17118f6189Smickey * notice, this list of conditions and the following disclaimer in the 18118f6189Smickey * documentation and/or other materials provided with the distribution. 1924fdaee6Sjsg * 3. Neither the name of the University nor the names of its contributors 20118f6189Smickey * may be used to endorse or promote products derived from this software 21118f6189Smickey * without specific prior written permission. 22118f6189Smickey * 23118f6189Smickey * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24118f6189Smickey * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25118f6189Smickey * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26118f6189Smickey * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27118f6189Smickey * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28118f6189Smickey * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29118f6189Smickey * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30118f6189Smickey * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31118f6189Smickey * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32118f6189Smickey * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33118f6189Smickey * SUCH DAMAGE. 34118f6189Smickey * 35118f6189Smickey * from: @(#)syscall.s 5.1 (Berkeley) 4/23/90 36118f6189Smickey */ 37118f6189Smickey 38118f6189Smickey#include <machine/asm.h> 39118f6189Smickey 40118f6189Smickey#include "SYS.h" 41118f6189Smickey 42*ce38bb7aSguentherSYSENTRY(syscall) 43*ce38bb7aSguenther RETGUARD_SETUP(_thread_sys_syscall, r11) 44*ce38bb7aSguenther#ifdef _RET_PROTECTOR 45*ce38bb7aSguenther pushq 8(%rsp) /* repush 6th argument */ 46*ce38bb7aSguenther#endif 47*ce38bb7aSguenther RETGUARD_PUSH(r11) 48*ce38bb7aSguenther SYSTRAP(syscall) 49*ce38bb7aSguenther HANDLE_ERRNO; 50*ce38bb7aSguenther RETGUARD_POP(r11) 51*ce38bb7aSguenther#ifdef _RET_PROTECTOR 52*ce38bb7aSguenther addq $8,%rsp /* repush 6th argument */ 53*ce38bb7aSguenther#endif 54*ce38bb7aSguenther RETGUARD_CHECK(_thread_sys_syscall, r11) 55*ce38bb7aSguenther ret 56*ce38bb7aSguentherSYSCALL_END(syscall) 57