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/* $FreeBSD: release/9.1.0/sys/powerpc/powerpc/sigcode64.S 209975 2010-07-13 05:32:19Z nwhitehorn $ */ /* $NetBSD: sigcode.S,v 1.1 1999/11/17 14:56:11 kleink Exp $ */ /*- * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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. */ #include <machine/asm.h> #include <sys/syscall.h> #include "assym.s" /* * The following code gets copied to the top of the user stack on process * execution. It does signal trampolining on signal delivery. * * On entry r1 points to a struct sigframe at bottom of current stack. * All other registers are unchanged. */ .globl CNAME(sigcode64),CNAME(szsigcode64) CNAME(sigcode64): addi 1,1,-48 /* reserved space for callee */ mflr 2 /* resolve function descriptor */ ld 0,0(2) ld 2,8(2) mtlr 0 blrl addi 3,1,48+SF_UC /* restore sp, and get &frame->sf_uc */ li 0,SYS_sigreturn sc /* sigreturn(scp) */ li 0,SYS_exit sc /* exit(errno) */ nop /* align to doubleword */ endsigcode64: .data CNAME(szsigcode64): .long endsigcode64 - CNAME(sigcode64)