1/*	$OpenBSD: _setjmp.S,v 1.4 2005/08/07 16:40:15 espie Exp $ */
2
3/*
4 * Copyright (c) 2002 Opsycon AB  (www.opsycon.se / www.opsycon.com)
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. Neither the name of Opsycon AB nor the names of its contributors
15 *    may be used to endorse or promote products derived from this software
16 *    without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
19 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 */
31
32#include <private/bionic_asm.h>
33#include <machine/regnum.h>
34#include <machine/signal.h>
35
36/*
37 * _setjmp, _longjmp (not restoring signal state)
38 *
39 * XXX FPSET should probably be taken from SR setting. hmmm...
40 *  GPOFF and FRAMESIZE must be the same for both _setjmp and _longjmp!
41 *
42 */
43
44FRAMESZ= MKFSIZ(0,4)
45GPOFF= FRAMESZ-2*REGSZ
46
47LEAF(_setjmp, FRAMESZ)
48	PTR_SUBU sp, FRAMESZ
49	SETUP_GP64(GPOFF, _setjmp)
50	SAVE_GP(GPOFF)
51	.set	noreorder
52#if defined(__mips64)
53	dli	v0, 0xACEDBADE			# sigcontext magic number
54#else
55	li	v0, 0xACEDBADE			# sigcontext magic number
56#endif
57	REG_S	v0, SC_REGS+ZERO*REGSZ(a0)
58	REG_S	s0, SC_REGS+S0*REGSZ(a0)
59	REG_S	s1, SC_REGS+S1*REGSZ(a0)
60	REG_S	s2, SC_REGS+S2*REGSZ(a0)
61	REG_S	s3, SC_REGS+S3*REGSZ(a0)
62	REG_S	s4, SC_REGS+S4*REGSZ(a0)
63	REG_S	s5, SC_REGS+S5*REGSZ(a0)
64	REG_S	s6, SC_REGS+S6*REGSZ(a0)
65	REG_S	s7, SC_REGS+S7*REGSZ(a0)
66	REG_S	s8, SC_REGS+S8*REGSZ(a0)
67	REG_L	v0, GPOFF(sp)
68	REG_S	v0, SC_REGS+GP*REGSZ(a0)
69	PTR_ADDU v0, sp, FRAMESZ
70	REG_S	v0, SC_REGS+SP*REGSZ(a0)
71	REG_S	ra, SC_PC(a0)
72
73#if !defined(SOFTFLOAT)
74	li	v0, 1				# be nice if we could tell
75	REG_S	v0, SC_FPUSED(a0)		# sc_fpused = 1
76	cfc1	v0, $31
77	s.d	$f20, SC_FPREGS+((F20-F0)*REGSZ_FP)(a0)
78	s.d	$f22, SC_FPREGS+((F22-F0)*REGSZ_FP)(a0)
79	s.d	$f24, SC_FPREGS+((F24-F0)*REGSZ_FP)(a0)
80	s.d	$f26, SC_FPREGS+((F26-F0)*REGSZ_FP)(a0)
81	s.d	$f28, SC_FPREGS+((F28-F0)*REGSZ_FP)(a0)
82	s.d	$f30, SC_FPREGS+((F30-F0)*REGSZ_FP)(a0)
83#if _MIPS_FPSET == 32
84	s.d	$f21, SC_FPREGS+((F21-F0)*REGSZ_FP)(a0)
85	s.d	$f23, SC_FPREGS+((F23-F0)*REGSZ_FP)(a0)
86	s.d	$f25, SC_FPREGS+((F25-F0)*REGSZ_FP)(a0)
87	s.d	$f27, SC_FPREGS+((F27-F0)*REGSZ_FP)(a0)
88	s.d	$f29, SC_FPREGS+((F29-F0)*REGSZ_FP)(a0)
89	s.d	$f31, SC_FPREGS+((F31-F0)*REGSZ_FP)(a0)
90#endif
91	REG_S	v0, SC_FPREGS+((FSR-F0)*REGSZ)(a0)
92#endif /* !SOFTFLOAT */
93	RESTORE_GP64
94	PTR_ADDU sp, FRAMESZ
95	j	ra
96	 move	v0, zero
97END(_setjmp)
98
99LEAF(_longjmp, FRAMESZ)
100	PTR_SUBU sp, FRAMESZ
101	SETUP_GP64(GPOFF, _longjmp)
102	SAVE_GP(GPOFF)
103	.set    noreorder
104	REG_L	v0, SC_REGS+ZERO*REGSZ(a0)
105	bne	v0, 0xACEDBADE, botch		# jump if error
106	REG_L	ra, SC_PC(a0)
107	REG_L	v0, SC_FPREGS+((FSR-F0)*REGSZ)(a0)
108	REG_L	s0, SC_REGS+S0*REGSZ(a0)
109	REG_L	s1, SC_REGS+S1*REGSZ(a0)
110	REG_L	s2, SC_REGS+S2*REGSZ(a0)
111	REG_L	s3, SC_REGS+S3*REGSZ(a0)
112	REG_L	s4, SC_REGS+S4*REGSZ(a0)
113	REG_L	s5, SC_REGS+S5*REGSZ(a0)
114	REG_L	s6, SC_REGS+S6*REGSZ(a0)
115	REG_L	s7, SC_REGS+S7*REGSZ(a0)
116	REG_L	s8, SC_REGS+S8*REGSZ(a0)
117	REG_L	gp, SC_REGS+GP*REGSZ(a0)
118	REG_L	sp, SC_REGS+SP*REGSZ(a0)
119#if !defined(SOFTFLOAT)
120	ctc1	v0, $31
121	l.d	$f20, SC_FPREGS+((F20-F0)*REGSZ_FP)(a0)
122	l.d	$f22, SC_FPREGS+((F22-F0)*REGSZ_FP)(a0)
123	l.d	$f24, SC_FPREGS+((F24-F0)*REGSZ_FP)(a0)
124	l.d	$f26, SC_FPREGS+((F26-F0)*REGSZ_FP)(a0)
125	l.d	$f28, SC_FPREGS+((F28-F0)*REGSZ_FP)(a0)
126	l.d	$f30, SC_FPREGS+((F30-F0)*REGSZ_FP)(a0)
127#if _MIPS_FPSET == 32
128	l.d	$f21, SC_FPREGS+((F21-F0)*REGSZ_FP)(a0)
129	l.d	$f23, SC_FPREGS+((F23-F0)*REGSZ_FP)(a0)
130	l.d	$f25, SC_FPREGS+((F25-F0)*REGSZ_FP)(a0)
131	l.d	$f27, SC_FPREGS+((F27-F0)*REGSZ_FP)(a0)
132	l.d	$f29, SC_FPREGS+((F29-F0)*REGSZ_FP)(a0)
133	l.d	$f31, SC_FPREGS+((F31-F0)*REGSZ_FP)(a0)
134#endif
135#endif /* !SOFTFLOAT */
136	bne	a1, zero, 1f
137	 nop
138	li	a1, 1			# never return 0!
1391:
140	j	ra
141	 move	v0, a1
142
143botch:
144	jal	longjmperror
145	nop
146	jal	abort
147	nop
148	RESTORE_GP64
149	PTR_ADDU sp, FRAMESZ
150END(_longjmp)
151