1/* Copyright (C) 2006-2016 Free Software Foundation, Inc.
2   Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
3		on behalf of Synopsys Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17Under Section 7 of GPL version 3, you are granted additional
18permissions described in the GCC Runtime Library Exception, version
193.1, as published by the Free Software Foundation.
20
21You should have received a copy of the GNU General Public License and
22a copy of the GCC Runtime Library Exception along with this program;
23see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
24<http://www.gnu.org/licenses/>.  */
25
26#include "arc-ieee-754.h"
27
28#if 0 /* DEBUG */
29	.global __extendsfdf2
30	.balign 4
31	FUNC(__extendsfdf2)
32__extendsfdf2:
33	push_s blink
34	bl.d __extendsfdf2_c
35	push_s r0
36	ld_s r2,[sp]
37	st_s r1,[sp]
38	push_s r0
39	bl.d __extendsfdf2_asm
40	mov_s r0,r2
41	pop_s r2
42	pop_s r3
43	pop_s blink
44	cmp r0,r2
45	cmp.eq r1,r3
46	jeq_s [blink]
47	bl abort
48	ENDFUNC(__extendsfdf2)
49#define __extendsfdf2 __extendsfdf2_asm
50#endif /* DEBUG */
51#if 0 /* ARC600 */
52__extendsfdf2:
53	lsr r2,r0,23
54	tst r2,0xff
55	bic.ne.f r2,0xff
56	beq_s .Linf_nan_denorm_0
57..
58.Linf_nan_denorm:
59	bbit1 r0,30,.Linf_nan
60#endif
61	.global __extendsfdf2
62	.balign 4
63	FUNC(__extendsfdf2)
64__extendsfdf2:
65	add.f r1,r0,r0
66	norm r3,r1
67#ifdef __LITTLE_ENDIAN__
68	lsr_s DBL0H,r1,4
69	brhs r3,7,.Linf_nan_denorm_0
70	asl_s DBL0L,r0,29
71	add_s DBL0H,DBL0H, \
72		0x38000000
73#else
74	lsr r2,r1,4
75	brhs r3,7,.Linf_nan_denorm_0
76	asl_s DBL0L,r1,28
77	add DBL0H,r2, \
78		0x38000000
79#endif
80	j_s.d [blink]
81	bxor.cs DBL0H,DBL0H,31
82	.balign 4
83.Linf_nan_denorm_0:
84#ifdef __LITTLE_ENDIAN__
85	mov_s DBL0H,r0
86	jeq.d [blink]
87	mov.eq DBL0L,0
88#else
89	jeq_s [blink]
90#endif
91	bmi .Linf_nan
92	asl_s r0,r0,r3
93	rsub r3,r3,0x380+6
94#ifdef __LITTLE_ENDIAN__
95	asl_s r3,r3,20
96	lsr DBL0H,r0,9
97	asl_s DBL0L,r0,23
98	add_s DBL0H,DBL0H,r3
99	j_s.d [blink]
100	bxor.cs DBL0H,DBL0H,31
101#else
102	asl DBL0L,r0,23
103	lsr_s DBL0H,r0,9
104	asl_s r3,r3,20
105	bxor.cs DBL0H,DBL0H,31
106	j_s.d [blink]
107	add_l DBL0H,DBL0H,r3
108#endif
109.Linf_nan:
110#ifdef __LITTLE_ENDIAN__
111	lsr DBL0H,r0,3
112
113	or_s DBL0H,DBL0H,r0
114	j_s.d [blink]
115	mov_l DBL0L,0
116#else
117	lsr r3,r0,3
118	mov_s DBL0L,0
119	j_s.d [blink]
120	or_l DBL0H,r0,r3
121#endif
122	ENDFUNC(__extendsfdf2)
123