1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
126 lines
3.6 KiB
ArmAsm
126 lines
3.6 KiB
ArmAsm
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#if defined(LIBC_RCS) && !defined(lint)
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.text
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.asciz "$FreeBSD$"
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#endif /* LIBC_RCS and not lint */
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#include "DEFS.h"
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#include "SYS.h"
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/*-
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* TODO:
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* Rename sigsetjmp to __sigsetjmp and siglongjmp to __siglongjmp,
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* remove the other *jmp functions and define everything in terms
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* of the renamed functions. This requires compiler support for
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* the renamed functions (introduced in gcc-2.5.3; previous versions
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* only supported *jmp with 0 or 1 leading underscores).
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*
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* Use sigprocmask() instead of sigblock() and sigsetmask(), and
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* check for and handle errors.
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*
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* Restore _all_ the registers and the signal mask atomically. Can
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* use sigreturn() if sigreturn() works.
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*/
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#ifdef _THREAD_SAFE
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ENTRY(_thread_sys_sigsetjmp)
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#else
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ENTRY(sigsetjmp)
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#endif
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movl 8(%esp),%eax
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movl 4(%esp),%ecx
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movl %eax,32(%ecx)
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testl %eax,%eax
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jz 2f
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PIC_PROLOGUE
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pushl $0
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#ifdef _THREAD_SAFE
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call PIC_PLT(CNAME(_thread_sys_sigblock))
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#else
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call PIC_PLT(CNAME(sigblock))
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#endif
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addl $4,%esp
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PIC_EPILOGUE
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movl 4(%esp),%ecx
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movl %eax,24(%ecx)
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2: movl 0(%esp),%edx
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movl %edx, 0(%ecx)
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movl %ebx, 4(%ecx)
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movl %esp, 8(%ecx)
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movl %ebp,12(%ecx)
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movl %esi,16(%ecx)
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movl %edi,20(%ecx)
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fnstcw 28(%ecx)
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xorl %eax,%eax
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ret
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#ifdef _THREAD_SAFE
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ENTRY(_thread_sys_siglongjmp)
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#else
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ENTRY(siglongjmp)
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#endif
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movl 4(%esp),%edx
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cmpl $0,32(%edx)
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jz 2f
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PIC_PROLOGUE
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pushl 24(%edx)
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#ifdef _THREAD_SAFE
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call PIC_PLT(CNAME(_thread_sys_sigsetmask))
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#else
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call PIC_PLT(CNAME(sigsetmask))
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#endif
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addl $4,%esp
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PIC_EPILOGUE
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2: movl 4(%esp),%edx
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movl 8(%esp),%eax
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movl 0(%edx),%ecx
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movl 4(%edx),%ebx
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movl 8(%edx),%esp
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movl 12(%edx),%ebp
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movl 16(%edx),%esi
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movl 20(%edx),%edi
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fninit
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fldcw 28(%edx)
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testl %eax,%eax
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jnz 1f
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incl %eax
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1: movl %ecx,0(%esp)
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ret
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