1/* $NetBSD: setjmp.S,v 1.17 2014/05/23 03:05:56 uebayasi Exp $ */ 2 3/*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90 35 */ 36 37#include <machine/asm.h> 38#if defined(LIBC_SCCS) 39 RCSID("$NetBSD: setjmp.S,v 1.17 2014/05/23 03:05:56 uebayasi Exp $") 40#endif 41 42/* 43 * C library -- _setjmp, _longjmp 44 * 45 * longjmp(a,v) 46 * will generate a "return(v)" from the last call to 47 * setjmp(a) 48 * by restoring registers from the stack. 49 * The previous signal state is restored. 50 */ 51 52ENTRY(__setjmp14) 53 movl 4(%esp),%ecx 54 movl 0(%esp),%edx 55 movl %edx, 0(%ecx) 56 movl %ebx, 4(%ecx) 57 movl %esp, 8(%ecx) 58 movl %ebp,12(%ecx) 59 movl %esi,16(%ecx) 60 movl %edi,20(%ecx) 61 62 /* Get the signal mask. */ 63 leal 24(%ecx),%edx 64 65 PIC_PROLOGUE 66 pushl %edx 67 pushl $0 68 pushl $0 69#ifdef __PIC__ 70 call PIC_PLT(_C_LABEL(__sigprocmask14)) 71#else 72 call _C_LABEL(__sigprocmask14) 73#endif 74 addl $12,%esp 75 PIC_EPILOGUE 76 77 xorl %eax,%eax 78 ret 79END(__setjmp14) 80 81ENTRY(__longjmp14) 82 /* Restore the signal mask. */ 83 movl 4(%esp),%ecx 84 leal 24(%ecx),%edx 85 86 PIC_PROLOGUE 87 pushl $0 88 pushl %edx 89 pushl $3 /* SIG_SETMASK */ 90#ifdef __PIC__ 91 call PIC_PLT(_C_LABEL(__sigprocmask14)) 92#else 93 call _C_LABEL(__sigprocmask14) 94#endif 95 addl $12,%esp 96 PIC_EPILOGUE 97 98 movl 4(%esp),%edx 99 movl 8(%esp),%eax 100 movl 0(%edx),%ecx 101 movl 4(%edx),%ebx 102 movl 8(%edx),%esp 103 movl 12(%edx),%ebp 104 movl 16(%edx),%esi 105 movl 20(%edx),%edi 106 testl %eax,%eax 107 jnz 1f 108 incl %eax 1091: movl %ecx,0(%esp) 110 ret 111END(__longjmp14) 112