1/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
2   2004, 2005, 2006
3   Free Software Foundation, Inc.
4
5This file is free software; you can redistribute it and/or modify it
6under the terms of the GNU General Public License as published by the
7Free Software Foundation; either version 2, or (at your option) any
8later version.
9
10In addition to the permissions in the GNU General Public License, the
11Free Software Foundation gives you unlimited permission to link the
12compiled version of this file into combinations with other programs,
13and to distribute those combinations without any restriction coming
14from the use of this file.  (The General Public License restrictions
15do apply in other respects; for example, they cover modification of
16the file, and distribution when not linked into a combine
17executable.)
18
19This file is distributed in the hope that it will be useful, but
20WITHOUT ANY WARRANTY; without even the implied warranty of
21MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
22General Public License for more details.
23
24You should have received a copy of the GNU General Public License
25along with this program; see the file COPYING.  If not, write to
26the Free Software Foundation, 51 Franklin Street, Fifth Floor,
27Boston, MA 02110-1301, USA.  */
28
29!! libgcc routines for the Renesas / SuperH SH CPUs.
30!! Contributed by Steve Chamberlain.
31!! sac@cygnus.com
32
33!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
34!! recoded in assembly by Toshiyasu Morita
35!! tm@netcom.com
36
37/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
38   ELF local label prefixes by J"orn Rennecke
39   amylaar@cygnus.com  */
40
41!
42! __ashrsi3
43!
44! Entry:
45!
46! r4: Value to shift
47! r5: Shifts
48!
49! Exit:
50!
51! r0: Result
52!
53! Destroys:
54!
55! (none)
56!
57
58	.global	__ashrsi3
59
60	.align	2
61__ashrsi3:
62	mov	#31,r0
63	and	r0,r5
64	mova	ashrsi3_table,r0
65	mov.b	@(r0,r5),r5
66#ifdef __sh1__
67	add	r5,r0
68	jmp	@r0
69#else
70	braf	r5
71#endif
72	mov	r4,r0
73
74	.align	2
75ashrsi3_table:
76	.byte		ashrsi3_0-ashrsi3_table
77	.byte		ashrsi3_1-ashrsi3_table
78	.byte		ashrsi3_2-ashrsi3_table
79	.byte		ashrsi3_3-ashrsi3_table
80	.byte		ashrsi3_4-ashrsi3_table
81	.byte		ashrsi3_5-ashrsi3_table
82	.byte		ashrsi3_6-ashrsi3_table
83	.byte		ashrsi3_7-ashrsi3_table
84	.byte		ashrsi3_8-ashrsi3_table
85	.byte		ashrsi3_9-ashrsi3_table
86	.byte		ashrsi3_10-ashrsi3_table
87	.byte		ashrsi3_11-ashrsi3_table
88	.byte		ashrsi3_12-ashrsi3_table
89	.byte		ashrsi3_13-ashrsi3_table
90	.byte		ashrsi3_14-ashrsi3_table
91	.byte		ashrsi3_15-ashrsi3_table
92	.byte		ashrsi3_16-ashrsi3_table
93	.byte		ashrsi3_17-ashrsi3_table
94	.byte		ashrsi3_18-ashrsi3_table
95	.byte		ashrsi3_19-ashrsi3_table
96	.byte		ashrsi3_20-ashrsi3_table
97	.byte		ashrsi3_21-ashrsi3_table
98	.byte		ashrsi3_22-ashrsi3_table
99	.byte		ashrsi3_23-ashrsi3_table
100	.byte		ashrsi3_24-ashrsi3_table
101	.byte		ashrsi3_25-ashrsi3_table
102	.byte		ashrsi3_26-ashrsi3_table
103	.byte		ashrsi3_27-ashrsi3_table
104	.byte		ashrsi3_28-ashrsi3_table
105	.byte		ashrsi3_29-ashrsi3_table
106	.byte		ashrsi3_30-ashrsi3_table
107	.byte		ashrsi3_31-ashrsi3_table
108
109ashrsi3_31:
110	rotcl	r0
111	rts
112	subc	r0,r0
113
114ashrsi3_30:
115	shar	r0
116ashrsi3_29:
117	shar	r0
118ashrsi3_28:
119	shar	r0
120ashrsi3_27:
121	shar	r0
122ashrsi3_26:
123	shar	r0
124ashrsi3_25:
125	shar	r0
126ashrsi3_24:
127	shlr16	r0
128	shlr8	r0
129	rts
130	exts.b	r0,r0
131
132ashrsi3_23:
133	shar	r0
134ashrsi3_22:
135	shar	r0
136ashrsi3_21:
137	shar	r0
138ashrsi3_20:
139	shar	r0
140ashrsi3_19:
141	shar	r0
142ashrsi3_18:
143	shar	r0
144ashrsi3_17:
145	shar	r0
146ashrsi3_16:
147	shlr16	r0
148	rts
149	exts.w	r0,r0
150
151ashrsi3_15:
152	shar	r0
153ashrsi3_14:
154	shar	r0
155ashrsi3_13:
156	shar	r0
157ashrsi3_12:
158	shar	r0
159ashrsi3_11:
160	shar	r0
161ashrsi3_10:
162	shar	r0
163ashrsi3_9:
164	shar	r0
165ashrsi3_8:
166	shar	r0
167ashrsi3_7:
168	shar	r0
169ashrsi3_6:
170	shar	r0
171ashrsi3_5:
172	shar	r0
173ashrsi3_4:
174	shar	r0
175ashrsi3_3:
176	shar	r0
177ashrsi3_2:
178	shar	r0
179ashrsi3_1:
180	rts
181	shar	r0
182
183ashrsi3_0:
184	rts
185	nop
186