The ashrsi3 function is used by some commands that aren't in SH2A default configs (e.g. JFFS2). The ashrsi3.S file has been copied from Linux. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>master
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/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
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2004, 2005, 2006 |
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Free Software Foundation, Inc. |
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the |
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Free Software Foundation; either version 2, or (at your option) any
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later version. |
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In addition to the permissions in the GNU General Public License, the |
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Free Software Foundation gives you unlimited permission to link the |
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compiled version of this file into combinations with other programs, |
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and to distribute those combinations without any restriction coming |
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from the use of this file. (The General Public License restrictions |
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine |
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executable.) |
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This file is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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Boston, MA 02110-1301, USA. */ |
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!! libgcc routines for the Renesas / SuperH SH CPUs. |
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!! Contributed by Steve Chamberlain. |
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!! sac@cygnus.com
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!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines |
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!! recoded in assembly by Toshiyasu Morita |
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!! tm@netcom.com
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/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and |
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ELF local label prefixes by J"orn Rennecke |
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amylaar@cygnus.com */
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! |
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! __ashrsi3 |
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! |
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! Entry: |
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! |
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! r4: Value to shift |
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! r5: Shifts |
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! |
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! Exit: |
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! |
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! r0: Result |
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! |
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! Destroys: |
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! |
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! (none) |
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! |
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.global __ashrsi3
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.align 2
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__ashrsi3: |
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mov #31,r0 |
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and r0,r5 |
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mova ashrsi3_table,r0 |
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mov.b @(r0,r5),r5
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#ifdef __sh1__ |
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add r5,r0 |
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jmp @r0
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#else |
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braf r5 |
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#endif |
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mov r4,r0 |
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.align 2
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ashrsi3_table: |
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.byte ashrsi3_0-ashrsi3_table |
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.byte ashrsi3_1-ashrsi3_table |
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.byte ashrsi3_2-ashrsi3_table |
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.byte ashrsi3_3-ashrsi3_table |
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.byte ashrsi3_4-ashrsi3_table |
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.byte ashrsi3_5-ashrsi3_table |
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.byte ashrsi3_6-ashrsi3_table |
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.byte ashrsi3_7-ashrsi3_table |
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.byte ashrsi3_8-ashrsi3_table |
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.byte ashrsi3_9-ashrsi3_table |
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.byte ashrsi3_10-ashrsi3_table |
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.byte ashrsi3_11-ashrsi3_table |
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.byte ashrsi3_12-ashrsi3_table |
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.byte ashrsi3_13-ashrsi3_table |
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.byte ashrsi3_14-ashrsi3_table |
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.byte ashrsi3_15-ashrsi3_table |
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.byte ashrsi3_16-ashrsi3_table |
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.byte ashrsi3_17-ashrsi3_table |
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.byte ashrsi3_18-ashrsi3_table |
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.byte ashrsi3_19-ashrsi3_table |
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.byte ashrsi3_20-ashrsi3_table |
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.byte ashrsi3_21-ashrsi3_table |
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.byte ashrsi3_22-ashrsi3_table |
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.byte ashrsi3_23-ashrsi3_table |
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.byte ashrsi3_24-ashrsi3_table |
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.byte ashrsi3_25-ashrsi3_table |
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.byte ashrsi3_26-ashrsi3_table |
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.byte ashrsi3_27-ashrsi3_table |
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.byte ashrsi3_28-ashrsi3_table |
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.byte ashrsi3_29-ashrsi3_table |
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.byte ashrsi3_30-ashrsi3_table |
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.byte ashrsi3_31-ashrsi3_table |
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ashrsi3_31: |
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rotcl r0 |
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rts |
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subc r0,r0 |
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ashrsi3_30: |
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shar r0 |
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ashrsi3_29: |
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shar r0 |
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ashrsi3_28: |
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shar r0 |
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ashrsi3_27: |
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shar r0 |
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ashrsi3_26: |
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shar r0 |
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ashrsi3_25: |
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shar r0 |
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ashrsi3_24: |
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shlr16 r0 |
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shlr8 r0 |
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rts |
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exts.b r0,r0 |
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ashrsi3_23: |
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shar r0 |
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ashrsi3_22: |
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shar r0 |
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ashrsi3_21: |
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shar r0 |
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ashrsi3_20: |
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shar r0 |
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ashrsi3_19: |
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shar r0 |
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ashrsi3_18: |
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shar r0 |
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ashrsi3_17: |
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shar r0 |
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ashrsi3_16: |
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shlr16 r0 |
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rts |
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exts.w r0,r0 |
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ashrsi3_15: |
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shar r0 |
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ashrsi3_14: |
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shar r0 |
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ashrsi3_13: |
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shar r0 |
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ashrsi3_12: |
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shar r0 |
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ashrsi3_11: |
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shar r0 |
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ashrsi3_10: |
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shar r0 |
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ashrsi3_9: |
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shar r0 |
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ashrsi3_8: |
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shar r0 |
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ashrsi3_7: |
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shar r0 |
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ashrsi3_6: |
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shar r0 |
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ashrsi3_5: |
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shar r0 |
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ashrsi3_4: |
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shar r0 |
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ashrsi3_3: |
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shar r0 |
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ashrsi3_2: |
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shar r0 |
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ashrsi3_1: |
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rts |
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shar r0 |
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ashrsi3_0: |
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rts |
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nop |
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