onfig.gcc: Use t-slibgcc-elf to build libgcc_s.so on m32r*linux.

config/m32r/t-linux (SHLIB_MAPFILES): Override to use m32r/libgcc-glibc.ver.
config/m32r/libgcc-glibc.ver: Add New file.

From-SVN: r91010

gcc/ChangeLog

+2004-11-22 Kazuhiro Inaoka <inaoka.kazuhiro@renesas.com>
+
+	* config.gcc: Use t-slibgcc-elf to build libgcc_s.so on
+        m32r*linux.
+	* config/m32r/t-linux (SHLIB_MAPFILES): Override to use
+	m32r/libgcc-glibc.ver.
+	* config/m32r/libgcc-glibc.ver: Add New file.
+
 2004-11-22  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* bitmap.h (struct bitmap_obstack): New obstack type.

gcc/config/m32r/libgcc-glibc.ver

+# In order to work around the very problems that force us to now generally
+# create a libgcc.so, glibc reexported a number of routines from libgcc.a.
+# By now choosing the same version tags for these specific routines, we
+# maintain enough binary compatibility to allow future versions of glibc
+# to defer implementation of these routines to libgcc.so via DT_AUXILIARY.
+
+# Note that we cannot use the default libgcc-glibc.ver file on sh,
+# because GLIBC_2.0 does not exist on this architecture, as the first 
+# ever glibc release on the platform was GLIBC_2.3.
+
+%inherit GCC_3.0 GLIBC_2.3
+GLIBC_2.3 {
+  __register_frame
+  __register_frame_table
+  __deregister_frame
+  __register_frame_info
+  __deregister_frame_info
+  __frame_state_for
+  __register_frame_info_table
+}

gcc/config/m32r/t-linux

@@ -40,3 +40,4 @@ LIBGCC1 =
 CROSS_LIBGCC1 =
 LIBGCC1_TEST =
 
+SHLIB_MAPFILES = $(srcdir)/config/m32r/libgcc-glibc.ver