sh: Migrate necessary libgcc bits in to arch/sh/lib for SUPERH32.

This moves in the necessary libgcc bits for SUPERH32 and drops the
libgcc linking for the regular targets. This in turn allows us to rip
out quite a few hacks both in sh_ksyms_32 and arch/sh/Makefile.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 81 insertions, 0 deletions

diff --git a/arch/sh/lib/udiv_qrnnd.S b/arch/sh/lib/udiv_qrnnd.S
new file mode 100644
index 000000000000..32b9a36de943
--- /dev/null
+++ b/arch/sh/lib/udiv_qrnnd.S
@@ -0,0 +1,81 @@
+/* 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  */
+
+        /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */
+        /* n1 < d, but n1 might be larger than d1.  */
+        .global __udiv_qrnnd_16
+        .balign 8
+__udiv_qrnnd_16:
+        div0u
+        cmp/hi r6,r0
+        bt .Lots
+        .rept 16
+        div1 r6,r0 
+        .endr
+        extu.w r0,r1
+        bt 0f
+        add r6,r0
+0:      rotcl r1
+        mulu.w r1,r5
+        xtrct r4,r0
+        swap.w r0,r0
+        sts macl,r2
+        cmp/hs r2,r0
+        sub r2,r0
+        bt 0f
+        addc r5,r0
+        add #-1,r1
+        bt 0f
+1:      add #-1,r1
+        rts
+        add r5,r0
+        .balign 8
+.Lots:
+        sub r5,r0
+        swap.w r4,r1
+        xtrct r0,r1
+        clrt
+        mov r1,r0
+        addc r5,r0
+        mov #-1,r1
+        bf/s 1b
+         shlr16 r1
+0:      rts
+         nop