| # _ashrsi3.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/>. |
| # |
| |
| /* Arithmetic right shift. */ |
| |
| .global __ashrsi3 |
| .type __ashrsi3,@function |
| |
| __ashrsi3: |
| /* 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(__ashrsi3_0)) |
| #else |
| mvhi r3, hi(__ashrsi3_0) |
| ori r3, r3, lo(__ashrsi3_0) |
| #endif |
| add r2, r2, r2 |
| add r2, r2, r2 |
| sub r3, r3, r2 |
| b r3 |
| |
| __ashrsi3_31: |
| sri r1, r1, 1 |
| __ashrsi3_30: |
| sri r1, r1, 1 |
| __ashrsi3_29: |
| sri r1, r1, 1 |
| __ashrsi3_28: |
| sri r1, r1, 1 |
| __ashrsi3_27: |
| sri r1, r1, 1 |
| __ashrsi3_26: |
| sri r1, r1, 1 |
| __ashrsi3_25: |
| sri r1, r1, 1 |
| __ashrsi3_24: |
| sri r1, r1, 1 |
| __ashrsi3_23: |
| sri r1, r1, 1 |
| __ashrsi3_22: |
| sri r1, r1, 1 |
| __ashrsi3_21: |
| sri r1, r1, 1 |
| __ashrsi3_20: |
| sri r1, r1, 1 |
| __ashrsi3_19: |
| sri r1, r1, 1 |
| __ashrsi3_18: |
| sri r1, r1, 1 |
| __ashrsi3_17: |
| sri r1, r1, 1 |
| __ashrsi3_16: |
| sri r1, r1, 1 |
| __ashrsi3_15: |
| sri r1, r1, 1 |
| __ashrsi3_14: |
| sri r1, r1, 1 |
| __ashrsi3_13: |
| sri r1, r1, 1 |
| __ashrsi3_12: |
| sri r1, r1, 1 |
| __ashrsi3_11: |
| sri r1, r1, 1 |
| __ashrsi3_10: |
| sri r1, r1, 1 |
| __ashrsi3_9: |
| sri r1, r1, 1 |
| __ashrsi3_8: |
| sri r1, r1, 1 |
| __ashrsi3_7: |
| sri r1, r1, 1 |
| __ashrsi3_6: |
| sri r1, r1, 1 |
| __ashrsi3_5: |
| sri r1, r1, 1 |
| __ashrsi3_4: |
| sri r1, r1, 1 |
| __ashrsi3_3: |
| sri r1, r1, 1 |
| __ashrsi3_2: |
| sri r1, r1, 1 |
| __ashrsi3_1: |
| sri r1, r1, 1 |
| __ashrsi3_0: |
| ret |
| |
