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eeb84df6 PE |
1 | /* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
2 | 2004, 2005, 2006 | |
3 | Free Software Foundation, Inc. | |
4 | ||
1a459660 WD |
5 | * SPDX-License-Identifier: GPL-2.0+ |
6 | */ | |
eeb84df6 PE |
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 | .global __lshrsi3 | |
37 | .align 2 | |
38 | __lshrsi3: | |
39 | mov #31,r0 | |
40 | and r0,r5 | |
41 | mova __lshrsi3_table,r0 | |
42 | mov.b @(r0,r5),r5 | |
43 | #ifdef __sh1__ | |
44 | add r5,r0 | |
45 | jmp @r0 | |
46 | #else | |
47 | braf r5 | |
48 | #endif | |
49 | mov r4,r0 | |
50 | ||
51 | .align 2 | |
52 | __lshrsi3_table: | |
53 | .byte __lshrsi3_0-__lshrsi3_table | |
54 | .byte __lshrsi3_1-__lshrsi3_table | |
55 | .byte __lshrsi3_2-__lshrsi3_table | |
56 | .byte __lshrsi3_3-__lshrsi3_table | |
57 | .byte __lshrsi3_4-__lshrsi3_table | |
58 | .byte __lshrsi3_5-__lshrsi3_table | |
59 | .byte __lshrsi3_6-__lshrsi3_table | |
60 | .byte __lshrsi3_7-__lshrsi3_table | |
61 | .byte __lshrsi3_8-__lshrsi3_table | |
62 | .byte __lshrsi3_9-__lshrsi3_table | |
63 | .byte __lshrsi3_10-__lshrsi3_table | |
64 | .byte __lshrsi3_11-__lshrsi3_table | |
65 | .byte __lshrsi3_12-__lshrsi3_table | |
66 | .byte __lshrsi3_13-__lshrsi3_table | |
67 | .byte __lshrsi3_14-__lshrsi3_table | |
68 | .byte __lshrsi3_15-__lshrsi3_table | |
69 | .byte __lshrsi3_16-__lshrsi3_table | |
70 | .byte __lshrsi3_17-__lshrsi3_table | |
71 | .byte __lshrsi3_18-__lshrsi3_table | |
72 | .byte __lshrsi3_19-__lshrsi3_table | |
73 | .byte __lshrsi3_20-__lshrsi3_table | |
74 | .byte __lshrsi3_21-__lshrsi3_table | |
75 | .byte __lshrsi3_22-__lshrsi3_table | |
76 | .byte __lshrsi3_23-__lshrsi3_table | |
77 | .byte __lshrsi3_24-__lshrsi3_table | |
78 | .byte __lshrsi3_25-__lshrsi3_table | |
79 | .byte __lshrsi3_26-__lshrsi3_table | |
80 | .byte __lshrsi3_27-__lshrsi3_table | |
81 | .byte __lshrsi3_28-__lshrsi3_table | |
82 | .byte __lshrsi3_29-__lshrsi3_table | |
83 | .byte __lshrsi3_30-__lshrsi3_table | |
84 | .byte __lshrsi3_31-__lshrsi3_table | |
85 | ||
86 | __lshrsi3_6: | |
87 | shlr2 r0 | |
88 | __lshrsi3_4: | |
89 | shlr2 r0 | |
90 | __lshrsi3_2: | |
91 | rts | |
92 | shlr2 r0 | |
93 | ||
94 | __lshrsi3_7: | |
95 | shlr2 r0 | |
96 | __lshrsi3_5: | |
97 | shlr2 r0 | |
98 | __lshrsi3_3: | |
99 | shlr2 r0 | |
100 | __lshrsi3_1: | |
101 | rts | |
102 | shlr r0 | |
103 | ||
104 | __lshrsi3_14: | |
105 | shlr2 r0 | |
106 | __lshrsi3_12: | |
107 | shlr2 r0 | |
108 | __lshrsi3_10: | |
109 | shlr2 r0 | |
110 | __lshrsi3_8: | |
111 | rts | |
112 | shlr8 r0 | |
113 | ||
114 | __lshrsi3_15: | |
115 | shlr2 r0 | |
116 | __lshrsi3_13: | |
117 | shlr2 r0 | |
118 | __lshrsi3_11: | |
119 | shlr2 r0 | |
120 | __lshrsi3_9: | |
121 | shlr8 r0 | |
122 | rts | |
123 | shlr r0 | |
124 | ||
125 | __lshrsi3_22: | |
126 | shlr2 r0 | |
127 | __lshrsi3_20: | |
128 | shlr2 r0 | |
129 | __lshrsi3_18: | |
130 | shlr2 r0 | |
131 | __lshrsi3_16: | |
132 | rts | |
133 | shlr16 r0 | |
134 | ||
135 | __lshrsi3_23: | |
136 | shlr2 r0 | |
137 | __lshrsi3_21: | |
138 | shlr2 r0 | |
139 | __lshrsi3_19: | |
140 | shlr2 r0 | |
141 | __lshrsi3_17: | |
142 | shlr16 r0 | |
143 | rts | |
144 | shlr r0 | |
145 | ||
146 | __lshrsi3_30: | |
147 | shlr2 r0 | |
148 | __lshrsi3_28: | |
149 | shlr2 r0 | |
150 | __lshrsi3_26: | |
151 | shlr2 r0 | |
152 | __lshrsi3_24: | |
153 | shlr16 r0 | |
154 | rts | |
155 | shlr8 r0 | |
156 | ||
157 | __lshrsi3_31: | |
158 | shlr2 r0 | |
159 | __lshrsi3_29: | |
160 | shlr2 r0 | |
161 | __lshrsi3_27: | |
162 | shlr2 r0 | |
163 | __lshrsi3_25: | |
164 | shlr16 r0 | |
165 | shlr8 r0 | |
166 | rts | |
167 | shlr r0 | |
168 | ||
169 | __lshrsi3_0: | |
170 | rts | |
171 | nop |