1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 3 2004, 2005, 2006 4 Free Software Foundation, Inc. 5 */ 6 7 !! libgcc routines for the Renesas / SuperH SH CPUs. 8 !! Contributed by Steve Chamberlain. 9 !! sac@cygnus.com 10 11 !! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines 12 !! recoded in assembly by Toshiyasu Morita 13 !! tm@netcom.com 14 15 /* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and 16 ELF local label prefixes by J"orn Rennecke 17 amylaar (at) cygnus.com */ 18 19 ! 20 ! __ashrsi3 21 ! 22 ! Entry: 23 ! 24 ! r4: Value to shift 25 ! r5: Shifts 26 ! 27 ! Exit: 28 ! 29 ! r0: Result 30 ! 31 ! Destroys: 32 ! 33 ! (none) 34 ! 35 36 .global __ashrsi3 37 38 .align 2 39 __ashrsi3: 40 mov #31,r0 41 and r0,r5 42 mova ashrsi3_table,r0 43 mov.b @(r0,r5),r5 44 #ifdef __sh1__ 45 add r5,r0 46 jmp @r0 47 #else 48 braf r5 49 #endif 50 mov r4,r0 51 52 .align 2 53 ashrsi3_table: 54 .byte ashrsi3_0-ashrsi3_table 55 .byte ashrsi3_1-ashrsi3_table 56 .byte ashrsi3_2-ashrsi3_table 57 .byte ashrsi3_3-ashrsi3_table 58 .byte ashrsi3_4-ashrsi3_table 59 .byte ashrsi3_5-ashrsi3_table 60 .byte ashrsi3_6-ashrsi3_table 61 .byte ashrsi3_7-ashrsi3_table 62 .byte ashrsi3_8-ashrsi3_table 63 .byte ashrsi3_9-ashrsi3_table 64 .byte ashrsi3_10-ashrsi3_table 65 .byte ashrsi3_11-ashrsi3_table 66 .byte ashrsi3_12-ashrsi3_table 67 .byte ashrsi3_13-ashrsi3_table 68 .byte ashrsi3_14-ashrsi3_table 69 .byte ashrsi3_15-ashrsi3_table 70 .byte ashrsi3_16-ashrsi3_table 71 .byte ashrsi3_17-ashrsi3_table 72 .byte ashrsi3_18-ashrsi3_table 73 .byte ashrsi3_19-ashrsi3_table 74 .byte ashrsi3_20-ashrsi3_table 75 .byte ashrsi3_21-ashrsi3_table 76 .byte ashrsi3_22-ashrsi3_table 77 .byte ashrsi3_23-ashrsi3_table 78 .byte ashrsi3_24-ashrsi3_table 79 .byte ashrsi3_25-ashrsi3_table 80 .byte ashrsi3_26-ashrsi3_table 81 .byte ashrsi3_27-ashrsi3_table 82 .byte ashrsi3_28-ashrsi3_table 83 .byte ashrsi3_29-ashrsi3_table 84 .byte ashrsi3_30-ashrsi3_table 85 .byte ashrsi3_31-ashrsi3_table 86 87 ashrsi3_31: 88 rotcl r0 89 rts 90 subc r0,r0 91 92 ashrsi3_30: 93 shar r0 94 ashrsi3_29: 95 shar r0 96 ashrsi3_28: 97 shar r0 98 ashrsi3_27: 99 shar r0 100 ashrsi3_26: 101 shar r0 102 ashrsi3_25: 103 shar r0 104 ashrsi3_24: 105 shlr16 r0 106 shlr8 r0 107 rts 108 exts.b r0,r0 109 110 ashrsi3_23: 111 shar r0 112 ashrsi3_22: 113 shar r0 114 ashrsi3_21: 115 shar r0 116 ashrsi3_20: 117 shar r0 118 ashrsi3_19: 119 shar r0 120 ashrsi3_18: 121 shar r0 122 ashrsi3_17: 123 shar r0 124 ashrsi3_16: 125 shlr16 r0 126 rts 127 exts.w r0,r0 128 129 ashrsi3_15: 130 shar r0 131 ashrsi3_14: 132 shar r0 133 ashrsi3_13: 134 shar r0 135 ashrsi3_12: 136 shar r0 137 ashrsi3_11: 138 shar r0 139 ashrsi3_10: 140 shar r0 141 ashrsi3_9: 142 shar r0 143 ashrsi3_8: 144 shar r0 145 ashrsi3_7: 146 shar r0 147 ashrsi3_6: 148 shar r0 149 ashrsi3_5: 150 shar r0 151 ashrsi3_4: 152 shar r0 153 ashrsi3_3: 154 shar r0 155 ashrsi3_2: 156 shar r0 157 ashrsi3_1: 158 rts 159 shar r0 160 161 ashrsi3_0: 162 rts 163 nop 164
