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compat_sigsetjmp.S revision 1.3 
      1 /*	$NetBSD: compat_sigsetjmp.S,v 1.3 2013/09/12 15:36:16 joerg Exp $	*/
      2 /*
      3  * Copyright (c) 1995 Paul Kranenburg
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed by Paul Kranenburg.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  *
     31  */
     32 
     33 #include "SYS.h"
     34 
     35 #ifdef __PIC__
     36 
     37 ENTRY(sigsetjmp)
     38 	PIC_PROLOGUE(%g1, %g2)		! %g1 = _GLOBAL_OFFSET_TABLE
     39 	tst	%o1
     40 	bnz	1f
     41 	 st	%o1, [%o0 + 56]		! jmpbuf[JBLEN] = savemask
     42 
     43 	!! if (savemask == 0) goto _setjmp
     44 	set	_C_LABEL(_setjmp), %g2
     45 	ld	[%g1 + %g2], %g1
     46 	jmp %g1
     47 	 nop
     48 
     49 	!! if (savemask != 0) goto setjmp
     50 1:	set	_C_LABEL(setjmp), %g2
     51 	ld	[%g1 + %g2], %g1
     52 	jmp %g1
     53 	 nop
     54 
     55 
     56 ENTRY(siglongjmp)
     57 	PIC_PROLOGUE(%g1, %g2)		! %g1 = _GLOBAL_OFFSET_TABLE
     58 	ld	[%o0 + 56], %g2		! restoremask = jmpbuf[JBLEN]
     59 	tst	%g2
     60 	bnz	1f
     61 	 nop
     62 
     63 	!! if (restoremask == 0) goto _longjmp
     64 	set	_C_LABEL(_longjmp), %g2
     65 	ld	[%g1 + %g2], %g1
     66 	jmp %g1
     67 	 nop
     68 
     69 	!! if (restoremask != 0) goto longjmp
     70 1:	set	_C_LABEL(longjmp), %g2
     71 	ld	[%g1 + %g2], %g1
     72 	jmp %g1
     73 	 nop
     74 
     75 #else /* !__PIC__ */
     76 
     77 ENTRY(sigsetjmp)
     78 	cmp %o1,0
     79 	be _C_LABEL(_setjmp)
     80 	st %o1,[%o0+40]		! jmpbuf[JBLEN]
     81 	nop
     82 	ba,a _C_LABEL(setjmp)
     83 	unimp 0
     84 
     85 ENTRY(siglongjmp)
     86 	ld [%o0+40],%g1
     87 	cmp %g1,0
     88 	be _C_LABEL(_longjmp)
     89 	nop
     90 	ba,a _C_LABEL(longjmp)
     91 	unimp 0
     92 
     93 #endif /* !__PIC__ */
     94