1 | /* SPDX-License-Identifier: GPL-2.0+ WITH GCC-exception-2.0 |
2 | |
3 | Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4 | 2004, 2005, 2006 |
5 | Free Software Foundation, Inc. |
6 | */ |
7 | |
8 | !! libgcc routines for the Renesas / SuperH SH CPUs. |
9 | !! Contributed by Steve Chamberlain. |
10 | !! sac@cygnus.com |
11 | |
12 | !! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines |
13 | !! recoded in assembly by Toshiyasu Morita |
14 | !! tm@netcom.com |
15 | |
16 | /* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and |
17 | ELF local label prefixes by J"orn Rennecke |
18 | amylaar@cygnus.com */ |
19 | |
20 | ! |
21 | ! __lshrsi3 |
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 | ! __lshrsi3_r0 |
37 | ! |
38 | ! Entry: |
39 | ! |
40 | ! r0: Value to shift |
41 | ! r5: Shifts |
42 | ! |
43 | ! Exit: |
44 | ! |
45 | ! r0: Result |
46 | ! |
47 | ! Destroys: |
48 | ! |
49 | ! (none) |
50 | ! |
51 | .global __lshrsi3 |
52 | .global __lshrsi3_r0 |
53 | |
54 | .align 2 |
55 | __lshrsi3: |
56 | mov r5,r0 |
57 | .align 2 |
58 | __lshrsi3_r0: |
59 | and #31,r0 |
60 | mov.l r4,@-r15 |
61 | mov r0,r4 |
62 | mova lshrsi3_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 | lshrsi3_table: |
70 | .byte lshrsi3_0-lshrsi3_table |
71 | .byte lshrsi3_1-lshrsi3_table |
72 | .byte lshrsi3_2-lshrsi3_table |
73 | .byte lshrsi3_3-lshrsi3_table |
74 | .byte lshrsi3_4-lshrsi3_table |
75 | .byte lshrsi3_5-lshrsi3_table |
76 | .byte lshrsi3_6-lshrsi3_table |
77 | .byte lshrsi3_7-lshrsi3_table |
78 | .byte lshrsi3_8-lshrsi3_table |
79 | .byte lshrsi3_9-lshrsi3_table |
80 | .byte lshrsi3_10-lshrsi3_table |
81 | .byte lshrsi3_11-lshrsi3_table |
82 | .byte lshrsi3_12-lshrsi3_table |
83 | .byte lshrsi3_13-lshrsi3_table |
84 | .byte lshrsi3_14-lshrsi3_table |
85 | .byte lshrsi3_15-lshrsi3_table |
86 | .byte lshrsi3_16-lshrsi3_table |
87 | .byte lshrsi3_17-lshrsi3_table |
88 | .byte lshrsi3_18-lshrsi3_table |
89 | .byte lshrsi3_19-lshrsi3_table |
90 | .byte lshrsi3_20-lshrsi3_table |
91 | .byte lshrsi3_21-lshrsi3_table |
92 | .byte lshrsi3_22-lshrsi3_table |
93 | .byte lshrsi3_23-lshrsi3_table |
94 | .byte lshrsi3_24-lshrsi3_table |
95 | .byte lshrsi3_25-lshrsi3_table |
96 | .byte lshrsi3_26-lshrsi3_table |
97 | .byte lshrsi3_27-lshrsi3_table |
98 | .byte lshrsi3_28-lshrsi3_table |
99 | .byte lshrsi3_29-lshrsi3_table |
100 | .byte lshrsi3_30-lshrsi3_table |
101 | .byte lshrsi3_31-lshrsi3_table |
102 | |
103 | lshrsi3_6: |
104 | shlr2 r0 |
105 | lshrsi3_4: |
106 | shlr2 r0 |
107 | lshrsi3_2: |
108 | rts |
109 | shlr2 r0 |
110 | |
111 | lshrsi3_7: |
112 | shlr2 r0 |
113 | lshrsi3_5: |
114 | shlr2 r0 |
115 | lshrsi3_3: |
116 | shlr2 r0 |
117 | lshrsi3_1: |
118 | rts |
119 | shlr r0 |
120 | |
121 | lshrsi3_14: |
122 | shlr2 r0 |
123 | lshrsi3_12: |
124 | shlr2 r0 |
125 | lshrsi3_10: |
126 | shlr2 r0 |
127 | lshrsi3_8: |
128 | rts |
129 | shlr8 r0 |
130 | |
131 | lshrsi3_15: |
132 | shlr2 r0 |
133 | lshrsi3_13: |
134 | shlr2 r0 |
135 | lshrsi3_11: |
136 | shlr2 r0 |
137 | lshrsi3_9: |
138 | shlr8 r0 |
139 | rts |
140 | shlr r0 |
141 | |
142 | lshrsi3_22: |
143 | shlr2 r0 |
144 | lshrsi3_20: |
145 | shlr2 r0 |
146 | lshrsi3_18: |
147 | shlr2 r0 |
148 | lshrsi3_16: |
149 | rts |
150 | shlr16 r0 |
151 | |
152 | lshrsi3_23: |
153 | shlr2 r0 |
154 | lshrsi3_21: |
155 | shlr2 r0 |
156 | lshrsi3_19: |
157 | shlr2 r0 |
158 | lshrsi3_17: |
159 | shlr16 r0 |
160 | rts |
161 | shlr r0 |
162 | |
163 | lshrsi3_30: |
164 | shlr2 r0 |
165 | lshrsi3_28: |
166 | shlr2 r0 |
167 | lshrsi3_26: |
168 | shlr2 r0 |
169 | lshrsi3_24: |
170 | shlr16 r0 |
171 | rts |
172 | shlr8 r0 |
173 | |
174 | lshrsi3_31: |
175 | shlr2 r0 |
176 | lshrsi3_29: |
177 | shlr2 r0 |
178 | lshrsi3_27: |
179 | shlr2 r0 |
180 | lshrsi3_25: |
181 | shlr16 r0 |
182 | shlr8 r0 |
183 | rts |
184 | shlr r0 |
185 | |
186 | lshrsi3_0: |
187 | rts |
188 | nop |
189 | |