diff options
Diffstat (limited to 'libgcc/config/lm32/_lshrsi3.S')
| -rw-r--r-- | libgcc/config/lm32/_lshrsi3.S | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/libgcc/config/lm32/_lshrsi3.S b/libgcc/config/lm32/_lshrsi3.S new file mode 100644 index 0000000000..706fd003a4 --- /dev/null +++ b/libgcc/config/lm32/_lshrsi3.S @@ -0,0 +1,109 @@ +# _lshrsi3.S for Lattice Mico32 +# Contributed by Jon Beniston <jon@beniston.com> and Richard Henderson. +# +# Copyright (C) 2009 Free Software Foundation, Inc. +# +# This file is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation; either version 3, or (at your option) any +# later version. +# +# This file is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# Under Section 7 of GPL version 3, you are granted additional +# permissions described in the GCC Runtime Library Exception, version +# 3.1, as published by the Free Software Foundation. +# +# You should have received a copy of the GNU General Public License and +# a copy of the GCC Runtime Library Exception along with this program; +# see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +# <http://www.gnu.org/licenses/>. +# + +/* Logical right shift. */ + + .global __lshrsi3 + .type __lshrsi3,@function + +__lshrsi3: + /* Only use 5 LSBs, as that's all the h/w shifter uses. */ + andi r2, r2, 0x1f + /* Get address of offset into unrolled shift loop to jump to. */ +#ifdef __PIC__ + lw r3, (gp+got(__lshrsi3_0)) +#else + mvhi r3, hi(__lshrsi3_0) + ori r3, r3, lo(__lshrsi3_0) +#endif + add r2, r2, r2 + add r2, r2, r2 + sub r3, r3, r2 + b r3 + +__lshrsi3_31: + srui r1, r1, 1 +__lshrsi3_30: + srui r1, r1, 1 +__lshrsi3_29: + srui r1, r1, 1 +__lshrsi3_28: + srui r1, r1, 1 +__lshrsi3_27: + srui r1, r1, 1 +__lshrsi3_26: + srui r1, r1, 1 +__lshrsi3_25: + srui r1, r1, 1 +__lshrsi3_24: + srui r1, r1, 1 +__lshrsi3_23: + srui r1, r1, 1 +__lshrsi3_22: + srui r1, r1, 1 +__lshrsi3_21: + srui r1, r1, 1 +__lshrsi3_20: + srui r1, r1, 1 +__lshrsi3_19: + srui r1, r1, 1 +__lshrsi3_18: + srui r1, r1, 1 +__lshrsi3_17: + srui r1, r1, 1 +__lshrsi3_16: + srui r1, r1, 1 +__lshrsi3_15: + srui r1, r1, 1 +__lshrsi3_14: + srui r1, r1, 1 +__lshrsi3_13: + srui r1, r1, 1 +__lshrsi3_12: + srui r1, r1, 1 +__lshrsi3_11: + srui r1, r1, 1 +__lshrsi3_10: + srui r1, r1, 1 +__lshrsi3_9: + srui r1, r1, 1 +__lshrsi3_8: + srui r1, r1, 1 +__lshrsi3_7: + srui r1, r1, 1 +__lshrsi3_6: + srui r1, r1, 1 +__lshrsi3_5: + srui r1, r1, 1 +__lshrsi3_4: + srui r1, r1, 1 +__lshrsi3_3: + srui r1, r1, 1 +__lshrsi3_2: + srui r1, r1, 1 +__lshrsi3_1: + srui r1, r1, 1 +__lshrsi3_0: + ret |