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      1 # _ashlsi3.S for Lattice Mico32
      2 # Contributed by Jon Beniston <jon@beniston.com> and Richard Henderson.
      3 #
      4 # Copyright (C) 2009-2024 Free Software Foundation, Inc.
      5 #
      6 # This file is free software; you can redistribute it and/or modify it
      7 # under the terms of the GNU General Public License as published by the
      8 # Free Software Foundation; either version 3, or (at your option) any
      9 # later version.
     10 #
     11 # This file is distributed in the hope that it will be useful, but
     12 # WITHOUT ANY WARRANTY; without even the implied warranty of
     13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14 # General Public License for more details.
     15 #
     16 # Under Section 7 of GPL version 3, you are granted additional
     17 # permissions described in the GCC Runtime Library Exception, version
     18 # 3.1, as published by the Free Software Foundation.
     19 #
     20 # You should have received a copy of the GNU General Public License and
     21 # a copy of the GCC Runtime Library Exception along with this program;
     22 # see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     23 # <http://www.gnu.org/licenses/>.
     24 #
     25 
     26 /* Arithmetic left shift.  */
     27 
     28         .text
     29 
     30         .global __ashlsi3
     31         .type __ashlsi3,@function
     32 
     33         .align 4
     34 __ashlsi3:
     35         /* Only use 5 LSBs, as that's all the h/w shifter uses.  */
     36         andi    r2, r2, 0x1f
     37         /* Get address of offset into unrolled shift loop to jump to.  */
     38 #ifdef __PIC__
     39         lw      r3, (gp+got(__ashlsi3_0))
     40 #else
     41         mvhi    r3, hi(__ashlsi3_0)
     42         ori     r3, r3, lo(__ashlsi3_0)
     43 #endif
     44         add     r2, r2, r2
     45         add     r2, r2, r2
     46         sub     r3, r3, r2
     47         b       r3
     48 
     49 __ashlsi3_31:
     50         add     r1, r1, r1
     51 __ashlsi3_30:
     52         add     r1, r1, r1
     53 __ashlsi3_29:
     54         add     r1, r1, r1
     55 __ashlsi3_28:
     56         add     r1, r1, r1
     57 __ashlsi3_27:
     58         add     r1, r1, r1
     59 __ashlsi3_26:
     60         add     r1, r1, r1
     61 __ashlsi3_25:
     62         add     r1, r1, r1
     63 __ashlsi3_24:
     64         add     r1, r1, r1
     65 __ashlsi3_23:
     66         add     r1, r1, r1
     67 __ashlsi3_22:
     68         add     r1, r1, r1
     69 __ashlsi3_21:
     70         add     r1, r1, r1
     71 __ashlsi3_20:
     72         add     r1, r1, r1
     73 __ashlsi3_19:
     74         add     r1, r1, r1
     75 __ashlsi3_18:
     76         add     r1, r1, r1
     77 __ashlsi3_17:
     78         add     r1, r1, r1
     79 __ashlsi3_16:
     80         add     r1, r1, r1
     81 __ashlsi3_15:
     82         add     r1, r1, r1
     83 __ashlsi3_14:
     84         add     r1, r1, r1
     85 __ashlsi3_13:
     86         add     r1, r1, r1
     87 __ashlsi3_12:
     88         add     r1, r1, r1
     89 __ashlsi3_11:
     90         add     r1, r1, r1
     91 __ashlsi3_10:
     92         add     r1, r1, r1
     93 __ashlsi3_9:
     94         add     r1, r1, r1
     95 __ashlsi3_8:
     96         add     r1, r1, r1
     97 __ashlsi3_7:
     98         add     r1, r1, r1
     99 __ashlsi3_6:
    100         add     r1, r1, r1
    101 __ashlsi3_5:
    102         add     r1, r1, r1
    103 __ashlsi3_4:
    104         add     r1, r1, r1
    105 __ashlsi3_3:
    106         add     r1, r1, r1
    107 __ashlsi3_2:
    108         add     r1, r1, r1
    109 __ashlsi3_1:
    110         add     r1, r1, r1
    111 __ashlsi3_0:
    112         ret
    113 
    114