summaryrefslogtreecommitdiffstats
path: root/arch/sh/lib/lshrsi3.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/lib/lshrsi3.S')
-rw-r--r--arch/sh/lib/lshrsi3.S193
1 files changed, 193 insertions, 0 deletions
diff --git a/arch/sh/lib/lshrsi3.S b/arch/sh/lib/lshrsi3.S
new file mode 100644
index 000000000000..1e7aaa557130
--- /dev/null
+++ b/arch/sh/lib/lshrsi3.S
@@ -0,0 +1,193 @@
+/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006
+ 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 2, or (at your option) any
+later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file. (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+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.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING. If not, write to
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
+
+!! libgcc routines for the Renesas / SuperH SH CPUs.
+!! Contributed by Steve Chamberlain.
+!! sac@cygnus.com
+
+!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
+!! recoded in assembly by Toshiyasu Morita
+!! tm@netcom.com
+
+/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
+ ELF local label prefixes by J"orn Rennecke
+ amylaar@cygnus.com */
+
+!
+! __lshrsi3
+!
+! Entry:
+!
+! r4: Value to shift
+! r5: Shifts
+!
+! Exit:
+!
+! r0: Result
+!
+! Destroys:
+!
+! (none)
+!
+ .global __lshrsi3
+
+ .align 2
+__lshrsi3:
+ mov #31,r0
+ and r0,r5
+ mova lshrsi3_table,r0
+ mov.b @(r0,r5),r5
+#ifdef __sh1__
+ add r5,r0
+ jmp @r0
+#else
+ braf r5
+#endif
+ mov r4,r0
+
+ .align 2
+lshrsi3_table:
+ .byte lshrsi3_0-lshrsi3_table
+ .byte lshrsi3_1-lshrsi3_table
+ .byte lshrsi3_2-lshrsi3_table
+ .byte lshrsi3_3-lshrsi3_table
+ .byte lshrsi3_4-lshrsi3_table
+ .byte lshrsi3_5-lshrsi3_table
+ .byte lshrsi3_6-lshrsi3_table
+ .byte lshrsi3_7-lshrsi3_table
+ .byte lshrsi3_8-lshrsi3_table
+ .byte lshrsi3_9-lshrsi3_table
+ .byte lshrsi3_10-lshrsi3_table
+ .byte lshrsi3_11-lshrsi3_table
+ .byte lshrsi3_12-lshrsi3_table
+ .byte lshrsi3_13-lshrsi3_table
+ .byte lshrsi3_14-lshrsi3_table
+ .byte lshrsi3_15-lshrsi3_table
+ .byte lshrsi3_16-lshrsi3_table
+ .byte lshrsi3_17-lshrsi3_table
+ .byte lshrsi3_18-lshrsi3_table
+ .byte lshrsi3_19-lshrsi3_table
+ .byte lshrsi3_20-lshrsi3_table
+ .byte lshrsi3_21-lshrsi3_table
+ .byte lshrsi3_22-lshrsi3_table
+ .byte lshrsi3_23-lshrsi3_table
+ .byte lshrsi3_24-lshrsi3_table
+ .byte lshrsi3_25-lshrsi3_table
+ .byte lshrsi3_26-lshrsi3_table
+ .byte lshrsi3_27-lshrsi3_table
+ .byte lshrsi3_28-lshrsi3_table
+ .byte lshrsi3_29-lshrsi3_table
+ .byte lshrsi3_30-lshrsi3_table
+ .byte lshrsi3_31-lshrsi3_table
+
+lshrsi3_6:
+ shlr2 r0
+lshrsi3_4:
+ shlr2 r0
+lshrsi3_2:
+ rts
+ shlr2 r0
+
+lshrsi3_7:
+ shlr2 r0
+lshrsi3_5:
+ shlr2 r0
+lshrsi3_3:
+ shlr2 r0
+lshrsi3_1:
+ rts
+ shlr r0
+
+lshrsi3_14:
+ shlr2 r0
+lshrsi3_12:
+ shlr2 r0
+lshrsi3_10:
+ shlr2 r0
+lshrsi3_8:
+ rts
+ shlr8 r0
+
+lshrsi3_15:
+ shlr2 r0
+lshrsi3_13:
+ shlr2 r0
+lshrsi3_11:
+ shlr2 r0
+lshrsi3_9:
+ shlr8 r0
+ rts
+ shlr r0
+
+lshrsi3_22:
+ shlr2 r0
+lshrsi3_20:
+ shlr2 r0
+lshrsi3_18:
+ shlr2 r0
+lshrsi3_16:
+ rts
+ shlr16 r0
+
+lshrsi3_23:
+ shlr2 r0
+lshrsi3_21:
+ shlr2 r0
+lshrsi3_19:
+ shlr2 r0
+lshrsi3_17:
+ shlr16 r0
+ rts
+ shlr r0
+
+lshrsi3_30:
+ shlr2 r0
+lshrsi3_28:
+ shlr2 r0
+lshrsi3_26:
+ shlr2 r0
+lshrsi3_24:
+ shlr16 r0
+ rts
+ shlr8 r0
+
+lshrsi3_31:
+ shlr2 r0
+lshrsi3_29:
+ shlr2 r0
+lshrsi3_27:
+ shlr2 r0
+lshrsi3_25:
+ shlr16 r0
+ shlr8 r0
+ rts
+ shlr r0
+
+lshrsi3_0:
+ rts
+ nop