1/*	$OpenBSD: sigsetjmp.S,v 1.2 2007/03/02 06:11:54 miod Exp $	*/
2/*	$NetBSD: sigsetjmp.S,v 1.9 2006/01/05 19:21:37 uwe Exp $	*/
3
4/*-
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * William Jolitz.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *	from: @(#)setjmp.s	5.1 (Berkeley) 4/23/90
36 */
37
38#include <machine/asm.h>
39#include <machine/setjmp.h>
40
41ENTRY(sigsetjmp)
42	tst	r5,	r5		/* if (savemask == 0) */
43	bt	2f
44
45	/* identical to setjmp */
46	PIC_PROLOGUE(.L_got_1)
47	sts.l	pr,	@-sp
48	mov.l	r4,	@-sp
49	mov.l	r5,	@-sp
50
51	mov.l	.L_sigprocmask_1, r0
52	mov	r4,	r6
53	mov	#1,	r4		/* how = SIG_BLOCK */
54	mov	#0,	r5		/* new = NULL */
551:	CALL	r0
56	 add	#4,	r6		/* old = &sigmask */
57
58	mov.l	@sp+,	r5
59	mov.l	@sp+,	r4
60	lds.l	@sp+,	pr
61	PIC_EPILOGUE
62
632:	/* identical to _setjmp except that first word is in r5 */
64#if defined(__SH4__) && !defined(__SH4_NOFPU__)
65	add	#(_JBLEN * 4), r4
66	sts	fpscr,	r1
67	xor	r0,	r0
68	mov.l	r1,	@-r4
69	lds	r0,	fpscr
70	sts.l	fpul,	@-r4
71	fmov.s	fr15,	@-r4
72	fmov.s	fr14,	@-r4
73	fmov.s	fr13,	@-r4
74	fmov.s	fr12,	@-r4
75	frchg
76	fmov.s	fr15,	@-r4
77	fmov.s	fr14,	@-r4
78	fmov.s	fr13,	@-r4
79	fmov.s	fr12,	@-r4
80	lds	r1,	fpscr
81#else
82	add	#((_JBLEN - 10) * 4), r4
83#endif
84	sts.l	mach,	@-r4
85	sts.l	macl,	@-r4
86	mov.l	r15,	@-r4
87	mov.l	r14,	@-r4
88	mov.l	r13,	@-r4
89	mov.l	r12,	@-r4
90	mov.l	r11,	@-r4
91	mov.l	r10,	@-r4
92	mov.l	r9,	@-r4
93	mov.l	r8,	@-r4
94	sts.l	pr,	@-r4
95	add	#-4,	r4		/* skip signal mask */
96	mov.l	r5,	@-r4		/* has signal mask? */
97	rts
98	 xor	r0,	r0
99
100	.align	2
101.L_got_1:		PIC_GOT_DATUM
102.L_sigprocmask_1:	CALL_DATUM(_C_LABEL(sigprocmask), 1b)
103	SET_ENTRY_SIZE(sigsetjmp)
104
105ENTRY(siglongjmp)
106	mov.l	@r4+,	r0
107	tst	r0,	r0
108	bt	2f			/* if no mask */
109
110	/* identical to longjmp */
111	/* we won't return here, so we don't need to save pr and r12 */
112	PIC_PROLOGUE_NOSAVE(.L_got_2)
113	mov.l	r5,	@-sp
114	mov.l	r4,	@-sp
115
116	mov.l	.L_sigprocmask_2, r0
117	mov	r4,	r5		/* new = &sigmask */
118	mov	#3,	r4		/* how = SIG_SETMASK */
1191:	CALL	r0
120	 mov	#0,	r6		/* old = NULL */
121
122	mov.l	@sp+,	r4
123	mov.l	@sp+,	r5
124
1252:	/* identical to _longjmp */
126	add	#4,	r4
127	lds.l	@r4+,	pr
128	mov.l	@r4+,	r8
129	mov.l	@r4+,	r9
130	mov.l	@r4+,	r10
131	mov.l	@r4+,	r11
132	mov.l	@r4+,	r12
133	mov.l	@r4+,	r13
134	mov.l	@r4+,	r14
135	mov.l	@r4+,	r15
136	lds.l	@r4+,	macl
137	lds.l	@r4+,	mach
138#if defined(__SH4__) && !defined(__SH4_NOFPU__)
139	xor	r0, 	r0
140	lds	r0,	fpscr
141	frchg
142	fmov.s	@r4+,	fr12
143	fmov.s	@r4+,	fr13
144	fmov.s	@r4+,	fr14
145	fmov.s	@r4+,	fr15
146	frchg
147	fmov.s	@r4+,	fr12
148	fmov.s	@r4+,	fr13
149	fmov.s	@r4+,	fr14
150	fmov.s	@r4+,	fr15
151	lds.l	@r4+,	fpul
152	lds.l	@r4+,	fpscr
153#endif
154
155	mov	r5,	r0
156	tst	r0,	r0	/* make sure return value is non-zero */
157	bf	.L0
158	add	#1,	r0
159.L0:
160	rts
161	 nop
162
163	.align	2
164.L_got_2:		PIC_GOT_DATUM
165.L_sigprocmask_2:	CALL_DATUM(_C_LABEL(sigprocmask), 1b)
166	SET_ENTRY_SIZE(siglongjmp)
167