summaryrefslogtreecommitdiff
path: root/arch/sh/lib
diff options
context:
space:
mode:
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
parent7fbeb6422d9fb32063c8357fcdee99f0088a1a7f (diff)
downloadu-boot-imx-eeb84df6e43212a31e96402788ec9b3e39a399a6.zip
u-boot-imx-eeb84df6e43212a31e96402788ec9b3e39a399a6.tar.gz
u-boot-imx-eeb84df6e43212a31e96402788ec9b3e39a399a6.tar.bz2
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')
-rw-r--r--arch/sh/lib/Makefile22
-rw-r--r--arch/sh/lib/ashiftlt.S192
-rw-r--r--arch/sh/lib/ashiftrt.S149
-rw-r--r--arch/sh/lib/ashldi3.c25
-rw-r--r--arch/sh/lib/libgcc.h25
-rw-r--r--arch/sh/lib/lshiftrt.S192
-rw-r--r--arch/sh/lib/lshrdi3.c25
-rw-r--r--arch/sh/lib/movmem.S238
8 files changed, 868 insertions, 0 deletions
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile
index c0670cb..6aaf55a 100644
--- a/arch/sh/lib/Makefile
+++ b/arch/sh/lib/Makefile
@@ -21,8 +21,15 @@
include $(TOPDIR)/config.mk
LIB = $(obj)lib$(ARCH).o
+LIBGCC = $(obj)libgcc.o
SOBJS-y +=
+GLSOBJS += ashiftrt.o
+GLSOBJS += ashiftlt.o
+GLSOBJS += lshiftrt.o
+GLSOBJS += ashldi3.o
+GLSOBJS += lshrdi3.o
+GLSOBJS += movmem.o
COBJS-y += board.o
COBJS-y += bootm.o
@@ -37,10 +44,25 @@ endif
SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
+LGOBJS := $(addprefix $(obj),$(GLSOBJS)) \
+ $(addprefix $(obj),$(GLCOBJS))
+
+# Always build libsh.o
+TARGETS := $(LIB)
+
+# Build private libgcc only when asked for
+ifdef USE_PRIVATE_LIBGCC
+TARGETS += $(LIBGCC)
+endif
+
+all: $(TARGETS)
$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
+$(LIBGCC): $(obj).depend $(LGOBJS)
+ $(call cmd_link_o_target, $(LGOBJS))
+
#########################################################################
# defines $(obj).depend target
diff --git a/arch/sh/lib/ashiftlt.S b/arch/sh/lib/ashiftlt.S
new file mode 100644
index 0000000..4940a87
--- /dev/null
+++ b/arch/sh/lib/ashiftlt.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 */
+
+!
+! GLOBAL(ashlsi3)
+!
+! Entry:
+!
+! r4: Value to shift
+! r5: Shifts
+!
+! Exit:
+!
+! r0: Result
+!
+! Destroys:
+!
+! (none)
+!
+ .global __ashlsi3
+ .align 2
+__ashlsi3:
+ mov #31,r0
+ and r0,r5
+ mova __ashlsi3_table,r0
+ mov.b @(r0,r5),r5
+#ifdef __sh1__
+ add r5,r0
+ jmp @r0
+#else
+ braf r5
+#endif
+ mov r4,r0
+
+ .align 2
+__ashlsi3_table:
+ .byte __ashlsi3_0-__ashlsi3_table
+ .byte __ashlsi3_1-__ashlsi3_table
+ .byte __ashlsi3_2-__ashlsi3_table
+ .byte __ashlsi3_3-__ashlsi3_table
+ .byte __ashlsi3_4-__ashlsi3_table
+ .byte __ashlsi3_5-__ashlsi3_table
+ .byte __ashlsi3_6-__ashlsi3_table
+ .byte __ashlsi3_7-__ashlsi3_table
+ .byte __ashlsi3_8-__ashlsi3_table
+ .byte __ashlsi3_9-__ashlsi3_table
+ .byte __ashlsi3_10-__ashlsi3_table
+ .byte __ashlsi3_11-__ashlsi3_table
+ .byte __ashlsi3_12-__ashlsi3_table
+ .byte __ashlsi3_13-__ashlsi3_table
+ .byte __ashlsi3_14-__ashlsi3_table
+ .byte __ashlsi3_15-__ashlsi3_table
+ .byte __ashlsi3_16-__ashlsi3_table
+ .byte __ashlsi3_17-__ashlsi3_table
+ .byte __ashlsi3_18-__ashlsi3_table
+ .byte __ashlsi3_19-__ashlsi3_table
+ .byte __ashlsi3_20-__ashlsi3_table
+ .byte __ashlsi3_21-__ashlsi3_table
+ .byte __ashlsi3_22-__ashlsi3_table
+ .byte __ashlsi3_23-__ashlsi3_table
+ .byte __ashlsi3_24-__ashlsi3_table
+ .byte __ashlsi3_25-__ashlsi3_table
+ .byte __ashlsi3_26-__ashlsi3_table
+ .byte __ashlsi3_27-__ashlsi3_table
+ .byte __ashlsi3_28-__ashlsi3_table
+ .byte __ashlsi3_29-__ashlsi3_table
+ .byte __ashlsi3_30-__ashlsi3_table
+ .byte __ashlsi3_31-__ashlsi3_table
+
+__ashlsi3_6:
+ shll2 r0
+__ashlsi3_4:
+ shll2 r0
+__ashlsi3_2:
+ rts
+ shll2 r0
+
+__ashlsi3_7:
+ shll2 r0
+__ashlsi3_5:
+ shll2 r0
+__ashlsi3_3:
+ shll2 r0
+__ashlsi3_1:
+ rts
+ shll r0
+
+__ashlsi3_14:
+ shll2 r0
+__ashlsi3_12:
+ shll2 r0
+__ashlsi3_10:
+ shll2 r0
+__ashlsi3_8:
+ rts
+ shll8 r0
+
+__ashlsi3_15:
+ shll2 r0
+__ashlsi3_13:
+ shll2 r0
+__ashlsi3_11:
+ shll2 r0
+__ashlsi3_9:
+ shll8 r0
+ rts
+ shll r0
+
+__ashlsi3_22:
+ shll2 r0
+__ashlsi3_20:
+ shll2 r0
+__ashlsi3_18:
+ shll2 r0
+__ashlsi3_16:
+ rts
+ shll16 r0
+
+__ashlsi3_23:
+ shll2 r0
+__ashlsi3_21:
+ shll2 r0
+__ashlsi3_19:
+ shll2 r0
+__ashlsi3_17:
+ shll16 r0
+ rts
+ shll r0
+
+__ashlsi3_30:
+ shll2 r0
+__ashlsi3_28:
+ shll2 r0
+__ashlsi3_26:
+ shll2 r0
+__ashlsi3_24:
+ shll16 r0
+ rts
+ shll8 r0
+
+__ashlsi3_31:
+ shll2 r0
+__ashlsi3_29:
+ shll2 r0
+__ashlsi3_27:
+ shll2 r0
+__ashlsi3_25:
+ shll16 r0
+ shll8 r0
+ rts
+ shll r0
+
+__ashlsi3_0:
+ rts
+ nop
diff --git a/arch/sh/lib/ashiftrt.S b/arch/sh/lib/ashiftrt.S
new file mode 100644
index 0000000..45ce865
--- /dev/null
+++ b/arch/sh/lib/ashiftrt.S
@@ -0,0 +1,149 @@
+/* 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 */
+
+ .global __ashiftrt_r4_0
+ .global __ashiftrt_r4_1
+ .global __ashiftrt_r4_2
+ .global __ashiftrt_r4_3
+ .global __ashiftrt_r4_4
+ .global __ashiftrt_r4_5
+ .global __ashiftrt_r4_6
+ .global __ashiftrt_r4_7
+ .global __ashiftrt_r4_8
+ .global __ashiftrt_r4_9
+ .global __ashiftrt_r4_10
+ .global __ashiftrt_r4_11
+ .global __ashiftrt_r4_12
+ .global __ashiftrt_r4_13
+ .global __ashiftrt_r4_14
+ .global __ashiftrt_r4_15
+ .global __ashiftrt_r4_16
+ .global __ashiftrt_r4_17
+ .global __ashiftrt_r4_18
+ .global __ashiftrt_r4_19
+ .global __ashiftrt_r4_20
+ .global __ashiftrt_r4_21
+ .global __ashiftrt_r4_22
+ .global __ashiftrt_r4_23
+ .global __ashiftrt_r4_24
+ .global __ashiftrt_r4_25
+ .global __ashiftrt_r4_26
+ .global __ashiftrt_r4_27
+ .global __ashiftrt_r4_28
+ .global __ashiftrt_r4_29
+ .global __ashiftrt_r4_30
+ .global __ashiftrt_r4_31
+ .global __ashiftrt_r4_32
+
+ .align 1
+__ashiftrt_r4_32:
+__ashiftrt_r4_31:
+ rotcl r4
+ rts
+ subc r4,r4
+__ashiftrt_r4_30:
+ shar r4
+__ashiftrt_r4_29:
+ shar r4
+__ashiftrt_r4_28:
+ shar r4
+__ashiftrt_r4_27:
+ shar r4
+__ashiftrt_r4_26:
+ shar r4
+__ashiftrt_r4_25:
+ shar r4
+__ashiftrt_r4_24:
+ shlr16 r4
+ shlr8 r4
+ rts
+ exts.b r4,r4
+__ashiftrt_r4_23:
+ shar r4
+__ashiftrt_r4_22:
+ shar r4
+__ashiftrt_r4_21:
+ shar r4
+__ashiftrt_r4_20:
+ shar r4
+__ashiftrt_r4_19:
+ shar r4
+__ashiftrt_r4_18:
+ shar r4
+__ashiftrt_r4_17:
+ shar r4
+__ashiftrt_r4_16:
+ shlr16 r4
+ rts
+ exts.w r4,r4
+__ashiftrt_r4_15:
+ shar r4
+__ashiftrt_r4_14:
+ shar r4
+__ashiftrt_r4_13:
+ shar r4
+__ashiftrt_r4_12:
+ shar r4
+__ashiftrt_r4_11:
+ shar r4
+__ashiftrt_r4_10:
+ shar r4
+__ashiftrt_r4_9:
+ shar r4
+__ashiftrt_r4_8:
+ shar r4
+__ashiftrt_r4_7:
+ shar r4
+__ashiftrt_r4_6:
+ shar r4
+__ashiftrt_r4_5:
+ shar r4
+__ashiftrt_r4_4:
+ shar r4
+__ashiftrt_r4_3:
+ shar r4
+__ashiftrt_r4_2:
+ shar r4
+__ashiftrt_r4_1:
+ rts
+ shar r4
+__ashiftrt_r4_0:
+ rts
+ nop
diff --git a/arch/sh/lib/ashldi3.c b/arch/sh/lib/ashldi3.c
new file mode 100644
index 0000000..9b50d86
--- /dev/null
+++ b/arch/sh/lib/ashldi3.c
@@ -0,0 +1,25 @@
+#include "libgcc.h"
+
+long long __ashldi3(long long u, word_type b)
+{
+ DWunion uu, w;
+ word_type bm;
+
+ if (b == 0)
+ return u;
+
+ uu.ll = u;
+ bm = 32 - b;
+
+ if (bm <= 0) {
+ w.s.low = 0;
+ w.s.high = (unsigned int) uu.s.low << -bm;
+ } else {
+ const unsigned int carries = (unsigned int) uu.s.low >> bm;
+
+ w.s.low = (unsigned int) uu.s.low << b;
+ w.s.high = ((unsigned int) uu.s.high << b) | carries;
+ }
+
+ return w.ll;
+}
diff --git a/arch/sh/lib/libgcc.h b/arch/sh/lib/libgcc.h
new file mode 100644
index 0000000..05909d5
--- /dev/null
+++ b/arch/sh/lib/libgcc.h
@@ -0,0 +1,25 @@
+#ifndef __ASM_LIBGCC_H
+#define __ASM_LIBGCC_H
+
+#include <asm/byteorder.h>
+
+typedef int word_type __attribute__ ((mode (__word__)));
+
+#ifdef __BIG_ENDIAN
+struct DWstruct {
+ int high, low;
+};
+#elif defined(__LITTLE_ENDIAN)
+struct DWstruct {
+ int low, high;
+};
+#else
+#error I feel sick.
+#endif
+
+typedef union {
+ struct DWstruct s;
+ long long ll;
+} DWunion;
+
+#endif /* __ASM_LIBGCC_H */
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
diff --git a/arch/sh/lib/lshrdi3.c b/arch/sh/lib/lshrdi3.c
new file mode 100644
index 0000000..bb340ac
--- /dev/null
+++ b/arch/sh/lib/lshrdi3.c
@@ -0,0 +1,25 @@
+#include "libgcc.h"
+
+long long __lshrdi3(long long u, word_type b)
+{
+ DWunion uu, w;
+ word_type bm;
+
+ if (b == 0)
+ return u;
+
+ uu.ll = u;
+ bm = 32 - b;
+
+ if (bm <= 0) {
+ w.s.high = 0;
+ w.s.low = (unsigned int) uu.s.high >> -bm;
+ } else {
+ const unsigned int carries = (unsigned int) uu.s.high << bm;
+
+ w.s.high = (unsigned int) uu.s.high >> b;
+ w.s.low = ((unsigned int) uu.s.low >> b) | carries;
+ }
+
+ return w.ll;
+}
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)