/* $NetBSD: _setjmp.S,v 1.2 2014/05/22 15:01:56 uebayasi Exp $ */ /* * Copyright (c) 2001 Wasabi Systems, Inc. * All rights reserved. * * Written by Frank van der Linden for Wasabi Systems, Inc. * * 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 for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC * 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 <machine/setjmp.h> #if defined(LIBC_SCCS) RCSID("$NetBSD: _setjmp.S,v 1.2 2014/05/22 15:01:56 uebayasi Exp $") #endif /* * C library -- _setjmp, _longjmp * * _longjmp(a,v) * will generate a "return(v)" from the last call to * _setjmp(a) * by restoring registers from the stack. * The previous signal state is NOT restored. */ ENTRY(_setjmp) movq (%rsp),%r11 movq %rbx,(_JB_RBX * 8)(%rdi) movq %rbp,(_JB_RBP * 8)(%rdi) movq %r12,(_JB_R12 * 8)(%rdi) movq %r13,(_JB_R13 * 8)(%rdi) movq %r14,(_JB_R14 * 8)(%rdi) movq %r15,(_JB_R15 * 8)(%rdi) movq %rsp,(_JB_RSP * 8)(%rdi) movq %r11,(_JB_PC * 8)(%rdi) xorl %eax,%eax ret END(_setjmp) ENTRY(_longjmp) movq (_JB_RBX * 8)(%rdi),%rbx movq (_JB_RBP * 8)(%rdi),%rbp movq (_JB_R12 * 8)(%rdi),%r12 movq (_JB_R13 * 8)(%rdi),%r13 movq (_JB_R14 * 8)(%rdi),%r14 movq (_JB_R15 * 8)(%rdi),%r15 movq (_JB_RSP * 8)(%rdi),%rsp movq (_JB_PC * 8)(%rdi),%r11 movl %esi,%eax testl %eax,%eax jnz 1f incl %eax 1: movq %r11,0(%rsp) ret END(_longjmp) |