--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/sh/linux.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,137 @@
+/* Definitions for SH running Linux-based GNU systems using ELF
+   Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007
+   Free Software Foundation, Inc.
+   Contributed by Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
+
+This file is part of GCC.
+
+GCC 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 3, or (at your option)
+any later version.
+
+GCC 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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* Run-time Target Specification.  */
+#undef TARGET_VERSION
+#define TARGET_VERSION  fputs (" (SH GNU/Linux with ELF)", stderr);
+
+/* Enable DWARF 2 exceptions.  */
+#undef DWARF2_UNWIND_INFO
+#define DWARF2_UNWIND_INFO 1
+
+#undef SUBTARGET_CPP_SPEC
+#define SUBTARGET_CPP_SPEC "\
+   %{posix:-D_POSIX_SOURCE} \
+   %{pthread:-D_REENTRANT -D_PTHREADS} \
+"
+
+#define TARGET_OS_CPP_BUILTINS() \
+  do						\
+    {						\
+      LINUX_TARGET_OS_CPP_BUILTINS();		\
+    }						\
+  while (0)
+
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT \
+  (TARGET_CPU_DEFAULT | MASK_USERMODE | TARGET_ENDIAN_DEFAULT \
+   | TARGET_OPT_DEFAULT)
+
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
+#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+
+#undef SUBTARGET_LINK_EMUL_SUFFIX
+#define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
+#undef SUBTARGET_LINK_SPEC
+#define SUBTARGET_LINK_SPEC \
+  "%{shared:-shared} \
+   %{!static: \
+     %{rdynamic:-export-dynamic} \
+     %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \
+   %{static:-static}"
+
+/* Output assembler code to STREAM to call the profiler.  */
+
+#undef FUNCTION_PROFILER
+#define FUNCTION_PROFILER(STREAM,LABELNO)				\
+  do {									\
+    if (TARGET_SHMEDIA)							\
+      {									\
+	fprintf (STREAM, "\tpt\t1f,tr1\n");				\
+	fprintf (STREAM, "\taddi.l\tr15,-8,r15\n");			\
+	fprintf (STREAM, "\tst.l\tr15,0,r18\n");			\
+	if (flag_pic)							\
+	  {								\
+	    const char *gofs = "(datalabel _GLOBAL_OFFSET_TABLE_-(0f-.))"; \
+	    fprintf (STREAM, "\tmovi\t((%s>>16)&0xffff),r21\n", gofs);	\
+	    fprintf (STREAM, "\tshori\t(%s & 0xffff),r21\n", gofs);	\
+	    fprintf (STREAM, "0:\tptrel/u\tr21,tr0\n");			\
+	    fprintf (STREAM, "\tmovi\t((mcount@GOTPLT)&0xffff),r22\n");	\
+	    fprintf (STREAM, "\tgettr\ttr0,r21\n");			\
+	    fprintf (STREAM, "\tadd.l\tr21,r22,r21\n");			\
+	    fprintf (STREAM, "\tld.l\tr21,0,r21\n");			\
+	    fprintf (STREAM, "\tptabs\tr21,tr0\n");			\
+	  }								\
+	else								\
+	  fprintf (STREAM, "\tpt\tmcount,tr0\n");			\
+	fprintf (STREAM, "\tgettr\ttr1,r18\n");				\
+	fprintf (STREAM, "\tblink\ttr0,r63\n");				\
+	fprintf (STREAM, "1:\tld.l\tr15,0,r18\n");			\
+	fprintf (STREAM, "\taddi.l\tr15,8,r15\n");			\
+      }									\
+    else								\
+      {									\
+	if (flag_pic)							\
+	  {								\
+	    fprintf (STREAM, "\tmov.l\t3f,r1\n");			\
+	    fprintf (STREAM, "\tmova\t3f,r0\n");			\
+	    fprintf (STREAM, "\tadd\tr1,r0\n");				\
+	    fprintf (STREAM, "\tmov.l\t1f,r1\n");			\
+	    fprintf (STREAM, "\tmov.l\t@(r0,r1),r1\n");			\
+	  }								\
+	else								\
+	  fprintf (STREAM, "\tmov.l\t1f,r1\n");				\
+	fprintf (STREAM, "\tsts.l\tpr,@-r15\n");			\
+	fprintf (STREAM, "\tmova\t2f,r0\n");				\
+	fprintf (STREAM, "\tjmp\t@r1\n");				\
+	fprintf (STREAM, "\tlds\tr0,pr\n");				\
+	fprintf (STREAM, "\t.align\t2\n");				\
+	if (flag_pic)							\
+	  {								\
+	    fprintf (STREAM, "1:\t.long\tmcount@GOT\n");		\
+	    fprintf (STREAM, "3:\t.long\t_GLOBAL_OFFSET_TABLE_\n");	\
+	  }								\
+	else								\
+	  fprintf (STREAM, "1:\t.long\tmcount\n");			\
+	fprintf (STREAM, "2:\tlds.l\t@r15+,pr\n");			\
+      }									\
+  } while (0)
+
+#define MD_UNWIND_SUPPORT "config/sh/linux-unwind.h"
+
+/* For SH3 and SH4, we use a slot of the unwind frame which correspond
+   to a fake register number 16 as a placeholder for the return address
+   in MD_FALLBACK_FRAME_STATE_FOR and its content will be read with
+   _Unwind_GetGR which uses dwarf_reg_size_table to get the size of
+   the register.  So the entry of dwarf_reg_size_table corresponding to
+   this slot must be set.  To do this, we redefine DBX_REGISTER_NUMBER
+   so as to return itself for 16.  */
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(REGNO) \
+  ((! TARGET_SH5 && (REGNO) == 16) ? 16 : SH_DBX_REGISTER_NUMBER (REGNO))
+
+/* Since libgcc is compiled with -fpic for this target, we can't use
+   __sdivsi3_1 as the division strategy for -O0 and -Os.  */
+#undef SH_DIV_STRATEGY_DEFAULT
+#define SH_DIV_STRATEGY_DEFAULT SH_DIV_CALL2
+#undef SH_DIV_STR_FOR_SIZE
+#define SH_DIV_STR_FOR_SIZE "call2"