[U-Boot] sh: Add ashrsi3 libgcc function

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>
---
 arch/sh/lib/Makefile  |    1 +
 arch/sh/lib/ashrsi3.S |  185 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 186 insertions(+), 0 deletions(-)
 create mode 100644 arch/sh/lib/ashrsi3.S

Applied, thanks.

Best regards,
  Nobuhiro

2011/10/24 Phil Edworthy <phil.edworthy@renesas.com>:
> 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>
> ---
>  arch/sh/lib/Makefile  |    1 +
>  arch/sh/lib/ashrsi3.S |  185 +++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 186 insertions(+), 0 deletions(-)
>  create mode 100644 arch/sh/lib/ashrsi3.S
>
> diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile
> index 6aaf55a..256811a 100644
> --- a/arch/sh/lib/Makefile
> +++ b/arch/sh/lib/Makefile
> @@ -28,6 +28,7 @@ GLSOBJS       += ashiftrt.o
>  GLSOBJS        += ashiftlt.o
>  GLSOBJS        += lshiftrt.o
>  GLSOBJS        += ashldi3.o
> +GLSOBJS        += ashrsi3.o
>  GLSOBJS        += lshrdi3.o
>  GLSOBJS        += movmem.o
>
> diff --git a/arch/sh/lib/ashrsi3.S b/arch/sh/lib/ashrsi3.S
> new file mode 100644
> index 0000000..6f3cf46
> --- /dev/null
> +++ b/arch/sh/lib/ashrsi3.S
> @@ -0,0 +1,185 @@
> +/* 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  */
> +
> +!
> +! __ashrsi3
> +!
> +! Entry:
> +!
> +! r4: Value to shift
> +! r5: Shifts
> +!
> +! Exit:
> +!
> +! r0: Result
> +!
> +! Destroys:
> +!
> +! (none)
> +!
> +
> +       .global __ashrsi3
> +
> +       .align  2
> +__ashrsi3:
> +       mov     #31,r0
> +       and     r0,r5
> +       mova    ashrsi3_table,r0
> +       mov.b   @(r0,r5),r5
> +#ifdef __sh1__
> +       add     r5,r0
> +       jmp     @r0
> +#else
> +       braf    r5
> +#endif
> +       mov     r4,r0
> +
> +       .align  2
> +ashrsi3_table:
> +       .byte           ashrsi3_0-ashrsi3_table
> +       .byte           ashrsi3_1-ashrsi3_table
> +       .byte           ashrsi3_2-ashrsi3_table
> +       .byte           ashrsi3_3-ashrsi3_table
> +       .byte           ashrsi3_4-ashrsi3_table
> +       .byte           ashrsi3_5-ashrsi3_table
> +       .byte           ashrsi3_6-ashrsi3_table
> +       .byte           ashrsi3_7-ashrsi3_table
> +       .byte           ashrsi3_8-ashrsi3_table
> +       .byte           ashrsi3_9-ashrsi3_table
> +       .byte           ashrsi3_10-ashrsi3_table
> +       .byte           ashrsi3_11-ashrsi3_table
> +       .byte           ashrsi3_12-ashrsi3_table
> +       .byte           ashrsi3_13-ashrsi3_table
> +       .byte           ashrsi3_14-ashrsi3_table
> +       .byte           ashrsi3_15-ashrsi3_table
> +       .byte           ashrsi3_16-ashrsi3_table
> +       .byte           ashrsi3_17-ashrsi3_table
> +       .byte           ashrsi3_18-ashrsi3_table
> +       .byte           ashrsi3_19-ashrsi3_table
> +       .byte           ashrsi3_20-ashrsi3_table
> +       .byte           ashrsi3_21-ashrsi3_table
> +       .byte           ashrsi3_22-ashrsi3_table
> +       .byte           ashrsi3_23-ashrsi3_table
> +       .byte           ashrsi3_24-ashrsi3_table
> +       .byte           ashrsi3_25-ashrsi3_table
> +       .byte           ashrsi3_26-ashrsi3_table
> +       .byte           ashrsi3_27-ashrsi3_table
> +       .byte           ashrsi3_28-ashrsi3_table
> +       .byte           ashrsi3_29-ashrsi3_table
> +       .byte           ashrsi3_30-ashrsi3_table
> +       .byte           ashrsi3_31-ashrsi3_table
> +
> +ashrsi3_31:
> +       rotcl   r0
> +       rts
> +       subc    r0,r0
> +
> +ashrsi3_30:
> +       shar    r0
> +ashrsi3_29:
> +       shar    r0
> +ashrsi3_28:
> +       shar    r0
> +ashrsi3_27:
> +       shar    r0
> +ashrsi3_26:
> +       shar    r0
> +ashrsi3_25:
> +       shar    r0
> +ashrsi3_24:
> +       shlr16  r0
> +       shlr8   r0
> +       rts
> +       exts.b  r0,r0
> +
> +ashrsi3_23:
> +       shar    r0
> +ashrsi3_22:
> +       shar    r0
> +ashrsi3_21:
> +       shar    r0
> +ashrsi3_20:
> +       shar    r0
> +ashrsi3_19:
> +       shar    r0
> +ashrsi3_18:
> +       shar    r0
> +ashrsi3_17:
> +       shar    r0
> +ashrsi3_16:
> +       shlr16  r0
> +       rts
> +       exts.w  r0,r0
> +
> +ashrsi3_15:
> +       shar    r0
> +ashrsi3_14:
> +       shar    r0
> +ashrsi3_13:
> +       shar    r0
> +ashrsi3_12:
> +       shar    r0
> +ashrsi3_11:
> +       shar    r0
> +ashrsi3_10:
> +       shar    r0
> +ashrsi3_9:
> +       shar    r0
> +ashrsi3_8:
> +       shar    r0
> +ashrsi3_7:
> +       shar    r0
> +ashrsi3_6:
> +       shar    r0
> +ashrsi3_5:
> +       shar    r0
> +ashrsi3_4:
> +       shar    r0
> +ashrsi3_3:
> +       shar    r0
> +ashrsi3_2:
> +       shar    r0
> +ashrsi3_1:
> +       rts
> +       shar    r0
> +
> +ashrsi3_0:
> +       rts
> +       nop
> --
> 1.7.0.4
>
>