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 * 3. 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#include <machine/asm.h> 34/* 35 * C library -- _setjmp, _longjmp 36 * 37 * longjmp(a,v) 38 * will generate a "return(v)" from the last call to 39 * setjmp(a) 40 * by restoring registers from the environment 'a'. 41 * The previous signal state is restored. 42 */ 43 44#include "SYS.h" 45 46ENTRY(setjmp) 47 movl 4(%esp),%ecx 48 leal 28(%ecx), %eax 49 pushl %eax /* (sigset_t*)oset */ 50 pushl $0 /* (sigset_t*)set */ 51 pushl $1 /* SIG_BLOCK */ 52 call __libc_sigprocmask 53 addl $12,%esp 54 movl 4(%esp),%ecx 55 movl 0(%esp),%edx 56 movl %edx, 0(%ecx) 57 movl %ebx, 4(%ecx) 58 movl %esp, 8(%ecx) 59 movl %ebp,12(%ecx) 60 movl %esi,16(%ecx) 61 movl %edi,20(%ecx) 62 fnstcw 24(%ecx) 63 xorl %eax,%eax 64 ret 65END(setjmp) 66 67 WEAK_REFERENCE(__longjmp, longjmp) 68ENTRY(__longjmp) 69 movl 4(%esp),%edx 70 pushl $0 /* (sigset_t*)oset */ 71 leal 28(%edx), %eax 72 pushl %eax /* (sigset_t*)set */ 73 pushl $3 /* SIG_SETMASK */ 74 call __libc_sigprocmask 75 addl $12,%esp 76 movl 4(%esp),%edx 77 movl 8(%esp),%eax 78 movl 0(%edx),%ecx 79 movl 4(%edx),%ebx 80 movl 8(%edx),%esp 81 movl 12(%edx),%ebp 82 movl 16(%edx),%esi 83 movl 20(%edx),%edi 84 fldcw 24(%edx) 85 testl %eax,%eax 86 jnz 1f 87 incl %eax 881: movl %ecx,0(%esp) 89 ret 90END(__longjmp) 91 92 .section .note.GNU-stack,"",%progbits 93