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/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#if defined(LIBC_RCS) && !defined(lint)
.text
.asciz "$FreeBSD$"
#endif /* LIBC_RCS and not lint */
#include "DEFS.h"
#include "SYS.h"
/*-
* TODO:
* Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp,
* remove the other *jmp functions and define everything in terms
* of the renamed functions. This requires compiler support for
* the renamed functions (introduced in gcc-2.5.3; previous versions
* only supported *jmp with 0 or 1 leading underscores).
*
* Use sigprocmask() instead of sigblock() and sigsetmask(), and
* check for and handle errors.
*
* Restore _all_ the registers and the signal mask atomically. Can
* use sigreturn() if sigreturn() works.
*/
ENTRY(sigsetjmp)
movl 8(%esp),%eax
movl 4(%esp),%ecx
movl %eax,32(%ecx)
testl %eax,%eax
jz 2f
PIC_PROLOGUE
pushl $0
#ifdef _THREAD_SAFE
call PIC_PLT(CNAME(_thread_sys_sigblock))
#else
call PIC_PLT(CNAME(sigblock))
#endif
addl $4,%esp
PIC_EPILOGUE
movl 4(%esp),%ecx
movl %eax,24(%ecx)
2: movl 0(%esp),%edx
movl %edx, 0(%ecx)
movl %ebx, 4(%ecx)
movl %esp, 8(%ecx)
movl %ebp,12(%ecx)
movl %esi,16(%ecx)
movl %edi,20(%ecx)
fnstcw 28(%ecx)
xorl %eax,%eax
ret
ENTRY(siglongjmp)
movl 4(%esp),%edx
cmpl $0,32(%edx)
jz 2f
PIC_PROLOGUE
pushl 24(%edx)
#ifdef _THREAD_SAFE
call PIC_PLT(CNAME(_thread_sys_sigsetmask))
#else
call PIC_PLT(CNAME(sigsetmask))
#endif
addl $4,%esp
PIC_EPILOGUE
2: movl 4(%esp),%edx
movl 8(%esp),%eax
movl 0(%edx),%ecx
movl 4(%edx),%ebx
movl 8(%edx),%esp
movl 12(%edx),%ebp
movl 16(%edx),%esi
movl 20(%edx),%edi
fninit
fldcw 28(%edx)
testl %eax,%eax
jnz 1f
incl %eax
1: movl %ecx,0(%esp)
ret
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