sigsetjmp.S revision 85437
166550Snyan/*- 266550Snyan * Copyright (c) 1990 The Regents of the University of California. 366550Snyan * All rights reserved. 4139749Simp * 5139749Simp * This code is derived from software contributed to Berkeley by 666550Snyan * William Jolitz. 766550Snyan * 866550Snyan * Redistribution and use in source and binary forms, with or without 966550Snyan * modification, are permitted provided that the following conditions 1066550Snyan * are met: 1166550Snyan * 1. Redistributions of source code must retain the above copyright 1266550Snyan * notice, this list of conditions and the following disclaimer. 1366550Snyan * 2. Redistributions in binary form must reproduce the above copyright 1466550Snyan * notice, this list of conditions and the following disclaimer in the 1566550Snyan * documentation and/or other materials provided with the distribution. 1666550Snyan * 3. All advertising materials mentioning features or use of this software 1766550Snyan * must display the following acknowledgement: 1866550Snyan * This product includes software developed by the University of 1966550Snyan * California, Berkeley and its contributors. 2066550Snyan * 4. Neither the name of the University nor the names of its contributors 2166550Snyan * may be used to endorse or promote products derived from this software 2266550Snyan * without specific prior written permission. 2366550Snyan * 2466550Snyan * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2566550Snyan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2666550Snyan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2766550Snyan * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2866550Snyan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2966550Snyan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3066550Snyan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3166550Snyan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3266550Snyan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3366550Snyan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3466550Snyan * SUCH DAMAGE. 3566550Snyan */ 3666550Snyan 3766550Snyan#if defined(LIBC_RCS) && !defined(lint) 3866550Snyan .text 3966550Snyan .asciz "$FreeBSD: head/lib/libc/amd64/gen/sigsetjmp.S 85437 2001-10-24 20:29:14Z peter $" 4066550Snyan#endif /* LIBC_RCS and not lint */ 4166550Snyan 4266550Snyan#include "SYS.h" 4392739Salfred 4466550Snyan/*- 4592739Salfred * TODO: 4692739Salfred * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 4792739Salfred * remove the other *jmp functions and define everything in terms 4892739Salfred * of the renamed functions. This requires compiler support for 4966550Snyan * the renamed functions (introduced in gcc-2.5.3; previous versions 5092739Salfred * only supported *jmp with 0 or 1 leading underscores). 5192739Salfred * 5266550Snyan * Restore _all_ the registers and the signal mask atomically. Can 5366550Snyan * use sigreturn() if sigreturn() works. 5466550Snyan */ 5592739Salfred 5666550SnyanENTRY(sigsetjmp) 5792739Salfred movl 8(%esp),%eax 5866550Snyan movl 4(%esp),%ecx 5992739Salfred movl %eax,44(%ecx) 6092739Salfred testl %eax,%eax 6192739Salfred jz 2f 6266550Snyan PIC_PROLOGUE 6366550Snyan leal 28(%ecx), %eax 6492739Salfred pushl %eax /* (sigset_t*)oset */ 6592739Salfred pushl $0 /* (sigset_t*)set */ 6666550Snyan pushl $1 /* SIG_BLOCK */ 6792739Salfred call PIC_PLT(CNAME(_sigprocmask)) 6892739Salfred addl $12,%esp 6966550Snyan PIC_EPILOGUE 7066550Snyan movl 4(%esp),%ecx 7192739Salfred2: movl 0(%esp),%edx 7292739Salfred movl %edx, 0(%ecx) 7366550Snyan movl %ebx, 4(%ecx) 7492739Salfred movl %esp, 8(%ecx) 7566550Snyan movl %ebp,12(%ecx) 7666550Snyan movl %esi,16(%ecx) 7792739Salfred movl %edi,20(%ecx) 7866550Snyan fnstcw 24(%ecx) 79 xorl %eax,%eax 80 ret 81 82 .weak CNAME(siglongjmp); 83 .set CNAME(siglongjmp),CNAME(__siglongjmp); 84ENTRY(__siglongjmp); 85 movl 4(%esp),%edx 86 cmpl $0,44(%edx) 87 jz 2f 88 PIC_PROLOGUE 89 pushl $0 /* (sigset_t*)oset */ 90 leal 28(%edx), %eax 91 pushl %eax /* (sigset_t*)set */ 92 pushl $3 /* SIG_SETMASK */ 93 call PIC_PLT(CNAME(_sigprocmask)) 94 addl $12,%esp 95 PIC_EPILOGUE 96 movl 4(%esp),%edx 972: movl 8(%esp),%eax 98 movl 0(%edx),%ecx 99 movl 4(%edx),%ebx 100 movl 8(%edx),%esp 101 movl 12(%edx),%ebp 102 movl 16(%edx),%esi 103 movl 20(%edx),%edi 104 fninit 105 fldcw 24(%edx) 106 testl %eax,%eax 107 jnz 1f 108 incl %eax 1091: movl %ecx,0(%esp) 110 ret 111