1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#if defined(LIBC_SCCS) && !defined(lint) 34 .asciz "@(#)setjmp.s 5.1 (Berkeley) 4/23/90" 35#endif /* LIBC_SCCS and not lint */ 36#include <machine/asm.h> 37__FBSDID("$FreeBSD$"); 38 39/* 40 * C library -- _setjmp, _longjmp 41 * 42 * longjmp(a,v) 43 * will generate a "return(v)" from the last call to 44 * setjmp(a) 45 * by restoring registers from the environment 'a'. 46 * The previous signal state is restored. 47 */ 48 49#include "SYS.h" 50 51ENTRY(setjmp) 52 movl 4(%esp),%ecx 53 PIC_PROLOGUE 54#ifdef PIC 55 subl $12,%esp /* make the stack 16-byte aligned */ 56#endif 57 leal 28(%ecx), %eax 58 pushl %eax /* (sigset_t*)oset */ 59 pushl $0 /* (sigset_t*)set */ 60 pushl $1 /* SIG_BLOCK */ 61 call PIC_PLT(CNAME(_sigprocmask)) 62#ifdef PIC 63 addl $24,%esp 64#else 65 addl $12,%esp 66#endif 67 PIC_EPILOGUE 68 movl 4(%esp),%ecx 69 movl 0(%esp),%edx 70 movl %edx, 0(%ecx) 71 movl %ebx, 4(%ecx) 72 movl %esp, 8(%ecx) 73 movl %ebp,12(%ecx) 74 movl %esi,16(%ecx) 75 movl %edi,20(%ecx) 76 fnstcw 24(%ecx) 77 xorl %eax,%eax 78 ret 79END(setjmp) 80 81 WEAK_REFERENCE(__longjmp, longjmp) 82ENTRY(__longjmp) 83 movl 4(%esp),%edx 84 PIC_PROLOGUE 85#ifdef PIC 86 subl $12,%esp /* make the stack 16-byte aligned */ 87#endif 88 pushl $0 /* (sigset_t*)oset */ 89 leal 28(%edx), %eax 90 pushl %eax /* (sigset_t*)set */ 91 pushl $3 /* SIG_SETMASK */ 92 call PIC_PLT(CNAME(_sigprocmask)) 93#ifdef PIC 94 addl $24,%esp 95#else 96 addl $12,%esp 97#endif 98 PIC_EPILOGUE 99 movl 4(%esp),%edx 100 movl 8(%esp),%eax 101 movl 0(%edx),%ecx 102 movl 4(%edx),%ebx 103 movl 8(%edx),%esp 104 movl 12(%edx),%ebp 105 movl 16(%edx),%esi 106 movl 20(%edx),%edi 107 fldcw 24(%edx) 108 testl %eax,%eax 109 jnz 1f 110 incl %eax 1111: movl %ecx,0(%esp) 112 ret 113END(__longjmp) 114 115 .section .note.GNU-stack,"",%progbits 116