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authorPhil Edworthy <PHIL.EDWORTHY@renesas.com>2011-06-02 22:15:27 +0000
committerNobuhiro Iwamatsu <iwamatsu@nigauri.org>2011-08-22 13:16:08 +0900
commiteeb84df6e43212a31e96402788ec9b3e39a399a6 (patch)
treedddfac8b8a475474d02f60e450653d3a1fa53577 /arch/sh/lib/lshiftrt.S
parent7fbeb6422d9fb32063c8357fcdee99f0088a1a7f (diff)
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sh: Add support for SH2A freestanding build
SH2A toolchains often only provide an fdpic version of libgcc. This can't be used with bare-metal software like U-Boot, so this patch provides the necessary functions extracted from libgcc. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'arch/sh/lib/lshiftrt.S')
-rw-r--r--arch/sh/lib/lshiftrt.S192
1 files changed, 192 insertions, 0 deletions
diff --git a/arch/sh/lib/lshiftrt.S b/arch/sh/lib/lshiftrt.S
new file mode 100644
index 0000000..e6fc1cf
--- /dev/null
+++ b/arch/sh/lib/lshiftrt.S
@@ -0,0 +1,192 @@
+/* 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