1 /* $NetBSD: setjmp.S,v 1.3 1997/12/05 02:06:27 thorpej Exp $ */
4 * Copyright (c) 1994, 1995 Carnegie-Mellon University.
7 * Author: Chris G. Demetriou
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19 * Carnegie Mellon requests users of this software to return to
21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
22 * School of Computer Science
23 * Carnegie Mellon University
24 * Pittsburgh PA 15213-3890
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
30 #include <machine/asm.h>
31 __FBSDID("$FreeBSD$");
34 #include <machine/setjmp.h>
37 * C library -- setjmp, longjmp
40 * will generate a "return(v)" from
43 * by restoring registers from the stack,
44 * and the previous signal state.
48 alloc loc0=ar.pfs,1,2,3,0
51 mov out0=1 // how = SIG_BLOCK
52 mov out1=0 // set = NULL
53 add out2=J_SIGSET,in0 // oset = &jb[J_SIGSET]
54 br.call.sptk.few rp=__sys_sigprocmask
59 alloc r15=ar.pfs,1,0,0,0 // drop register frame
61 mov ar.pfs=r14 // restore ar.pfs
62 br.sptk.many _setjmp // finish saving state
65 WEAK_ALIAS(longjmp,__longjmp)
67 alloc loc0=ar.pfs,2,2,3,0
70 mov out0=3 // how = SIG_SETMASK
71 add out1=J_SIGSET,in0 // set = &jb[J_SIGSET]
72 mov out2=0 // oset = NULL
73 br.call.sptk.few rp=__sys_sigprocmask
78 alloc r15=ar.pfs,2,0,0,0 // drop register frame
80 mov ar.pfs=r14 // restore ar.pfs
81 br.sptk.many _longjmp // finish restoring state