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>
diff --git a/arch/sh/lib/movmem.S b/arch/sh/lib/movmem.S
new file mode 100644
index 0000000..c7efd40
--- /dev/null
+++ b/arch/sh/lib/movmem.S
@@ -0,0 +1,238 @@
+/* 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 */
+
+ .text
+ .balign 4
+ .global __movmem
+ .global __movstr
+ .set __movstr, __movmem
+ /* This would be a lot simpler if r6 contained the byte count
+ minus 64, and we wouldn't be called here for a byte count of 64. */
+__movmem:
+ sts.l pr,@-r15
+ shll2 r6
+ bsr __movmemSI52+2
+ mov.l @(48,r5),r0
+ .balign 4
+movmem_loop: /* Reached with rts */
+ mov.l @(60,r5),r0
+ add #-64,r6
+ mov.l r0,@(60,r4)
+ tst r6,r6
+ mov.l @(56,r5),r0
+ bt movmem_done
+ mov.l r0,@(56,r4)
+ cmp/pl r6
+ mov.l @(52,r5),r0
+ add #64,r5
+ mov.l r0,@(52,r4)
+ add #64,r4
+ bt __movmemSI52
+! done all the large groups, do the remainder
+! jump to movmem+
+ mova __movmemSI4+4,r0
+ add r6,r0
+ jmp @r0
+movmem_done: ! share slot insn, works out aligned.
+ lds.l @r15+,pr
+ mov.l r0,@(56,r4)
+ mov.l @(52,r5),r0
+ rts
+ mov.l r0,@(52,r4)
+ .balign 4
+
+ .global __movmemSI64
+ .global __movstrSI64
+ .set __movstrSI64, __movmemSI64
+__movmemSI64:
+ mov.l @(60,r5),r0
+ mov.l r0,@(60,r4)
+ .global __movmemSI60
+ .global __movstrSI60
+ .set __movstrSI60, __movmemSI60
+__movmemSI60:
+ mov.l @(56,r5),r0
+ mov.l r0,@(56,r4)
+ .global __movmemSI56
+ .global __movstrSI56
+ .set __movstrSI56, __movmemSI56
+__movmemSI56:
+ mov.l @(52,r5),r0
+ mov.l r0,@(52,r4)
+ .global __movmemSI52
+ .global __movstrSI52
+ .set __movstrSI52, __movmemSI52
+__movmemSI52:
+ mov.l @(48,r5),r0
+ mov.l r0,@(48,r4)
+ .global __movmemSI48
+ .global __movstrSI48
+ .set __movstrSI48, __movmemSI48
+__movmemSI48:
+ mov.l @(44,r5),r0
+ mov.l r0,@(44,r4)
+ .global __movmemSI44
+ .global __movstrSI44
+ .set __movstrSI44, __movmemSI44
+__movmemSI44:
+ mov.l @(40,r5),r0
+ mov.l r0,@(40,r4)
+ .global __movmemSI40
+ .global __movstrSI40
+ .set __movstrSI40, __movmemSI40
+__movmemSI40:
+ mov.l @(36,r5),r0
+ mov.l r0,@(36,r4)
+ .global __movmemSI36
+ .global __movstrSI36
+ .set __movstrSI36, __movmemSI36
+__movmemSI36:
+ mov.l @(32,r5),r0
+ mov.l r0,@(32,r4)
+ .global __movmemSI32
+ .global __movstrSI32
+ .set __movstrSI32, __movmemSI32
+__movmemSI32:
+ mov.l @(28,r5),r0
+ mov.l r0,@(28,r4)
+ .global __movmemSI28
+ .global __movstrSI28
+ .set __movstrSI28, __movmemSI28
+__movmemSI28:
+ mov.l @(24,r5),r0
+ mov.l r0,@(24,r4)
+ .global __movmemSI24
+ .global __movstrSI24
+ .set __movstrSI24, __movmemSI24
+__movmemSI24:
+ mov.l @(20,r5),r0
+ mov.l r0,@(20,r4)
+ .global __movmemSI20
+ .global __movstrSI20
+ .set __movstrSI20, __movmemSI20
+__movmemSI20:
+ mov.l @(16,r5),r0
+ mov.l r0,@(16,r4)
+ .global __movmemSI16
+ .global __movstrSI16
+ .set __movstrSI16, __movmemSI16
+__movmemSI16:
+ mov.l @(12,r5),r0
+ mov.l r0,@(12,r4)
+ .global __movmemSI12
+ .global __movstrSI12
+ .set __movstrSI12, __movmemSI12
+__movmemSI12:
+ mov.l @(8,r5),r0
+ mov.l r0,@(8,r4)
+ .global __movmemSI8
+ .global __movstrSI8
+ .set __movstrSI8, __movmemSI8
+__movmemSI8:
+ mov.l @(4,r5),r0
+ mov.l r0,@(4,r4)
+ .global __movmemSI4
+ .global __movstrSI4
+ .set __movstrSI4, __movmemSI4
+__movmemSI4:
+ mov.l @(0,r5),r0
+ rts
+ mov.l r0,@(0,r4)
+
+ .global __movmem_i4_even
+ .global __movstr_i4_even
+ .set __movstr_i4_even, __movmem_i4_even
+
+ .global __movmem_i4_odd
+ .global __movstr_i4_odd
+ .set __movstr_i4_odd, __movmem_i4_odd
+
+ .global __movmemSI12_i4
+ .global __movstrSI12_i4
+ .set __movstrSI12_i4, __movmemSI12_i4
+
+ .p2align 5
+L_movmem_2mod4_end:
+ mov.l r0,@(16,r4)
+ rts
+ mov.l r1,@(20,r4)
+
+ .p2align 2
+
+__movmem_i4_even:
+ mov.l @r5+,r0
+ bra L_movmem_start_even
+ mov.l @r5+,r1
+
+__movmem_i4_odd:
+ mov.l @r5+,r1
+ add #-4,r4
+ mov.l @r5+,r2
+ mov.l @r5+,r3
+ mov.l r1,@(4,r4)
+ mov.l r2,@(8,r4)
+
+L_movmem_loop:
+ mov.l r3,@(12,r4)
+ dt r6
+ mov.l @r5+,r0
+ bt/s L_movmem_2mod4_end
+ mov.l @r5+,r1
+ add #16,r4
+L_movmem_start_even:
+ mov.l @r5+,r2
+ mov.l @r5+,r3
+ mov.l r0,@r4
+ dt r6
+ mov.l r1,@(4,r4)
+ bf/s L_movmem_loop
+ mov.l r2,@(8,r4)
+ rts
+ mov.l r3,@(12,r4)
+
+ .p2align 4
+__movmemSI12_i4:
+ mov.l @r5,r0
+ mov.l @(4,r5),r1
+ mov.l @(8,r5),r2
+ mov.l r0,@r4
+ mov.l r1,@(4,r4)
+ rts
+ mov.l r2,@(8,r4)