sigsetjmp.S revision 71579
11849Swollman/*- 21849Swollman * Copyright (c) 1990 The Regents of the University of California. 31849Swollman * All rights reserved. 41849Swollman * 51849Swollman * This code is derived from software contributed to Berkeley by 61849Swollman * William Jolitz. 71849Swollman * 81849Swollman * Redistribution and use in source and binary forms, with or without 91849Swollman * modification, are permitted provided that the following conditions 101849Swollman * are met: 111849Swollman * 1. Redistributions of source code must retain the above copyright 121849Swollman * notice, this list of conditions and the following disclaimer. 131849Swollman * 2. Redistributions in binary form must reproduce the above copyright 141849Swollman * notice, this list of conditions and the following disclaimer in the 151849Swollman * documentation and/or other materials provided with the distribution. 161849Swollman * 3. All advertising materials mentioning features or use of this software 171849Swollman * must display the following acknowledgement: 181849Swollman * This product includes software developed by the University of 191849Swollman * California, Berkeley and its contributors. 201849Swollman * 4. Neither the name of the University nor the names of its contributors 211849Swollman * may be used to endorse or promote products derived from this software 221849Swollman * without specific prior written permission. 231849Swollman * 241849Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251849Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261849Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271849Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281849Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291849Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301849Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311849Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321849Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331849Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341849Swollman * SUCH DAMAGE. 351849Swollman * 3650476Speter * $FreeBSD: head/lib/libc/amd64/gen/sigsetjmp.S 71579 2001-01-24 13:01:12Z deischen $ 371849Swollman */ 381849Swollman 395790Sdg#if defined(LIBC_RCS) && !defined(lint) 405790Sdg .text 4150476Speter .asciz "$FreeBSD: head/lib/libc/amd64/gen/sigsetjmp.S 71579 2001-01-24 13:01:12Z deischen $" 425790Sdg#endif /* LIBC_RCS and not lint */ 431849Swollman 441849Swollman#include "DEFS.h" 451849Swollman#include "SYS.h" 461849Swollman 473851Sbde/*- 483851Sbde * TODO: 493851Sbde * Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp, 503851Sbde * remove the other *jmp functions and define everything in terms 513851Sbde * of the renamed functions. This requires compiler support for 523851Sbde * the renamed functions (introduced in gcc-2.5.3; previous versions 533851Sbde * only supported *jmp with 0 or 1 leading underscores). 543851Sbde * 553851Sbde * Restore _all_ the registers and the signal mask atomically. Can 563851Sbde * use sigreturn() if sigreturn() works. 573851Sbde */ 583851Sbde 5956345SjasoneENTRY(sigsetjmp) 601849Swollman movl 8(%esp),%eax 6151794Smarcel movl 4(%esp),%ecx 6251794Smarcel movl %eax,44(%ecx) 631849Swollman testl %eax,%eax 6415731Sjdp jz 2f 6515634Speter PIC_PROLOGUE 6651794Smarcel leal 28(%ecx), %eax 6751794Smarcel pushl %eax /* (sigset_t*)oset */ 6851794Smarcel pushl $0 /* (sigset_t*)set */ 6951794Smarcel pushl $1 /* SIG_BLOCK */ 7071579Sdeischen call PIC_PLT(CNAME(_sigprocmask)) 7151794Smarcel addl $12,%esp 7215634Speter PIC_EPILOGUE 7351794Smarcel movl 4(%esp),%ecx 7415731Sjdp2: movl 0(%esp),%edx 751849Swollman movl %edx, 0(%ecx) 761849Swollman movl %ebx, 4(%ecx) 771849Swollman movl %esp, 8(%ecx) 781849Swollman movl %ebp,12(%ecx) 791849Swollman movl %esi,16(%ecx) 801849Swollman movl %edi,20(%ecx) 8151794Smarcel fnstcw 24(%ecx) 821849Swollman xorl %eax,%eax 831849Swollman ret 841849Swollman 8571579Sdeischen .weak CNAME(siglongjmp); 8671579Sdeischen .set CNAME(siglongjmp),CNAME(__siglongjmp); 8759933SjasoneENTRY(__siglongjmp); 881849Swollman movl 4(%esp),%edx 8951794Smarcel cmpl $0,44(%edx) 9015731Sjdp jz 2f 9115634Speter PIC_PROLOGUE 9251794Smarcel pushl $0 /* (sigset_t*)oset */ 9351794Smarcel leal 28(%edx), %eax 9451794Smarcel pushl %eax /* (sigset_t*)set */ 9551794Smarcel pushl $3 /* SIG_SETMASK */ 9671579Sdeischen call PIC_PLT(CNAME(_sigprocmask)) 9751794Smarcel addl $12,%esp 9815634Speter PIC_EPILOGUE 9951794Smarcel movl 4(%esp),%edx 10051794Smarcel2: movl 8(%esp),%eax 1011849Swollman movl 0(%edx),%ecx 1021849Swollman movl 4(%edx),%ebx 1031849Swollman movl 8(%edx),%esp 1041849Swollman movl 12(%edx),%ebp 1051849Swollman movl 16(%edx),%esi 1061849Swollman movl 20(%edx),%edi 1073851Sbde fninit 10851794Smarcel fldcw 24(%edx) 1091849Swollman testl %eax,%eax 11015731Sjdp jnz 1f 1111849Swollman incl %eax 11215731Sjdp1: movl %ecx,0(%esp) 1131849Swollman ret 114