/* $OpenBSD: sigsetjmp.S,v 1.2 2004/02/09 21:25:08 deraadt Exp $ */ /* $NetBSD: __setjmp14.S,v 1.1 2001/06/19 00:25:02 fvdl 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 #include /* * 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 restored. */ ENTRY(sigsetjmp) movl %esi,(_JB_SIGFLAG * 8)(%rdi) testl %esi,%esi jz 2f pushq %rdi xorq %rdi,%rdi #ifdef PIC call PIC_PLT(_C_LABEL(sigblock)) #else call _C_LABEL(sigblock) #endif popq %rdi movq %rax,(_JB_SIGMASK * 8)(%rdi) 2: 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) 2: xorl %eax,%eax ret ENTRY(siglongjmp) movq %rdi,%r12 pushq %rsi cmpl $0, (_JB_SIGFLAG * 8)(%rdi) jz 2f movq (_JB_SIGMASK * 8)(%rdi),%rdi #ifdef PIC call PIC_PLT(_C_LABEL(sigsetmask)) #else call _C_LABEL(sigsetmask) #endif 2: popq %rax movq (_JB_RBX * 8)(%r12),%rbx movq (_JB_RBP * 8)(%r12),%rbp movq (_JB_R13 * 8)(%r12),%r13 movq (_JB_R14 * 8)(%r12),%r14 movq (_JB_R15 * 8)(%r12),%r15 movq (_JB_RSP * 8)(%r12),%rsp movq (_JB_PC * 8)(%r12),%r11 movq (_JB_R12 * 8)(%r12),%r12 testl %eax,%eax jnz 1f incl %eax 1: movq %r11,0(%rsp) ret