1 /* SPDX-License-Identifier: GPL-2.0+ WITH GCC-
2
3 Copyright (C) 1994, 1995, 1997, 1998, 1999,
4 2004, 2005, 2006
5 Free Software Foundation, Inc.
6 */
7
8 !! libgcc routines for the Renesas / SuperH SH
9 !! Contributed by Steve Chamberlain.
10 !! sac@cygnus.com
11
12 !! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___l
13 !! recoded in assembly by Toshiyasu Morita
14 !! tm@netcom.com
15
16 /* SH2 optimizations for ___ashrsi3, ___ashlsi
17 ELF local label prefixes by J"orn Rennecke
18 amylaar@cygnus.com */
19
20 !
21 ! __ashrsi3
22 !
23 ! Entry:
24 !
25 ! r4: Value to shift
26 ! r5: Shifts
27 !
28 ! Exit:
29 !
30 ! r0: Result
31 !
32 ! Destroys:
33 !
34 ! (none)
35 !
36 ! __ashrsi3_r0
37 !
38 ! Entry:
39 !
40 ! r4: Value to shift
41 ! r0: Shifts
42 !
43 ! Exit:
44 !
45 ! r0: Result
46 !
47 ! Destroys:
48 !
49 ! (none)
50
51 .global __ashrsi3
52 .global __ashrsi3_r0
53
54 .align 2
55 __ashrsi3:
56 mov r5,r0
57 .align 2
58 __ashrsi3_r0:
59 and #31,r0
60 mov.l r4,@-r15
61 mov r0,r4
62 mova ashrsi3_table,r0
63 mov.b @(r0,r4),r4
64 add r4,r0
65 jmp @r0
66 mov.l @r15+,r0
67
68 .align 2
69 ashrsi3_table:
70 .byte ashrsi3_0-ashrsi3_tabl
71 .byte ashrsi3_1-ashrsi3_tabl
72 .byte ashrsi3_2-ashrsi3_tabl
73 .byte ashrsi3_3-ashrsi3_tabl
74 .byte ashrsi3_4-ashrsi3_tabl
75 .byte ashrsi3_5-ashrsi3_tabl
76 .byte ashrsi3_6-ashrsi3_tabl
77 .byte ashrsi3_7-ashrsi3_tabl
78 .byte ashrsi3_8-ashrsi3_tabl
79 .byte ashrsi3_9-ashrsi3_tabl
80 .byte ashrsi3_10-ashrsi3_tab
81 .byte ashrsi3_11-ashrsi3_tab
82 .byte ashrsi3_12-ashrsi3_tab
83 .byte ashrsi3_13-ashrsi3_tab
84 .byte ashrsi3_14-ashrsi3_tab
85 .byte ashrsi3_15-ashrsi3_tab
86 .byte ashrsi3_16-ashrsi3_tab
87 .byte ashrsi3_17-ashrsi3_tab
88 .byte ashrsi3_18-ashrsi3_tab
89 .byte ashrsi3_19-ashrsi3_tab
90 .byte ashrsi3_20-ashrsi3_tab
91 .byte ashrsi3_21-ashrsi3_tab
92 .byte ashrsi3_22-ashrsi3_tab
93 .byte ashrsi3_23-ashrsi3_tab
94 .byte ashrsi3_24-ashrsi3_tab
95 .byte ashrsi3_25-ashrsi3_tab
96 .byte ashrsi3_26-ashrsi3_tab
97 .byte ashrsi3_27-ashrsi3_tab
98 .byte ashrsi3_28-ashrsi3_tab
99 .byte ashrsi3_29-ashrsi3_tab
100 .byte ashrsi3_30-ashrsi3_tab
101 .byte ashrsi3_31-ashrsi3_tab
102
103 ashrsi3_31:
104 rotcl r0
105 rts
106 subc r0,r0
107
108 ashrsi3_30:
109 shar r0
110 ashrsi3_29:
111 shar r0
112 ashrsi3_28:
113 shar r0
114 ashrsi3_27:
115 shar r0
116 ashrsi3_26:
117 shar r0
118 ashrsi3_25:
119 shar r0
120 ashrsi3_24:
121 shlr16 r0
122 shlr8 r0
123 rts
124 exts.b r0,r0
125
126 ashrsi3_23:
127 shar r0
128 ashrsi3_22:
129 shar r0
130 ashrsi3_21:
131 shar r0
132 ashrsi3_20:
133 shar r0
134 ashrsi3_19:
135 shar r0
136 ashrsi3_18:
137 shar r0
138 ashrsi3_17:
139 shar r0
140 ashrsi3_16:
141 shlr16 r0
142 rts
143 exts.w r0,r0
144
145 ashrsi3_15:
146 shar r0
147 ashrsi3_14:
148 shar r0
149 ashrsi3_13:
150 shar r0
151 ashrsi3_12:
152 shar r0
153 ashrsi3_11:
154 shar r0
155 ashrsi3_10:
156 shar r0
157 ashrsi3_9:
158 shar r0
159 ashrsi3_8:
160 shar r0
161 ashrsi3_7:
162 shar r0
163 ashrsi3_6:
164 shar r0
165 ashrsi3_5:
166 shar r0
167 ashrsi3_4:
168 shar r0
169 ashrsi3_3:
170 shar r0
171 ashrsi3_2:
172 shar r0
173 ashrsi3_1:
174 rts
175 shar r0
176
177 ashrsi3_0:
178 rts
179 nop
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