summaryrefslogtreecommitdiff
path: root/arch/sh/lib/lshrsi3.S
diff options
context:
space:
mode:
authorTom Rini <trini@konsulko.com>2015-03-01 21:06:33 -0500
committerTom Rini <trini@konsulko.com>2015-03-01 21:06:33 -0500
commit00956eb5f313d0a62c39f4fa642ffbaa85cc955c (patch)
tree3e30dd00af063f3f8bac6ad2c3f85d669b0d9506 /arch/sh/lib/lshrsi3.S
parent55ca6138240b8c5b986e918aca4d96d402cc2f21 (diff)
parentc3dd82386493d67cc5b0de06876360a27224b620 (diff)
Merge branch 'master' of git://git.denx.de/u-boot-sh
Diffstat (limited to 'arch/sh/lib/lshrsi3.S')
-rw-r--r--arch/sh/lib/lshrsi3.S171
1 files changed, 171 insertions, 0 deletions
diff --git a/arch/sh/lib/lshrsi3.S b/arch/sh/lib/lshrsi3.S
new file mode 100644
index 0000000000..787044d2e6
--- /dev/null
+++ b/arch/sh/lib/lshrsi3.S
@@ -0,0 +1,171 @@
+/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2006
+ Free Software Foundation, Inc.
+
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+!! 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