arc: Cleanup arcbe

Remove the mention of arcbe ABI to avoid any mislead.
ARC big endian ABI is no longer supported.

Reviewed-by: Florian Weimer <fweimer@redhat.com>

sysdeps/arc/bits/endianness.h

@@ -5,11 +5,7 @@
 # error "Never use <bits/endian.h> directly; include <endian.h> instead."
 #endif
 
-/* ARC has selectable endianness.  */
-#ifdef __BIG_ENDIAN__
-# define __BYTE_ORDER __BIG_ENDIAN
-#else
-# define __BYTE_ORDER __LITTLE_ENDIAN
-#endif
+/* Only little-endian ARC is supported.  */
+#define __BYTE_ORDER __LITTLE_ENDIAN
 
 #endif /* bits/endianness.h */

sysdeps/arc/configure

@@ -10,7 +10,7 @@ libc_cv_asm_line_sep='`'
 printf "%s\n" "#define ASM_LINE_SEP $libc_cv_asm_line_sep" >>confdefs.h
 
 
-# For big endian ABI, generate a symbol for selecting right dynamic linker
+# ARC big endian ABI is no longer supported.
 
 
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for egrep -e" >&5

sysdeps/arc/configure.ac

@@ -9,7 +9,7 @@ libc_cv_have_sdata_section=no
 libc_cv_asm_line_sep='`'
 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
 
-# For big endian ABI, generate a symbol for selecting right dynamic linker
+# ARC big endian ABI is no longer supported.
 AC_CACHE_CHECK([for big endian],
   [libc_cv_arc_be],
   [AC_EGREP_CPP(yes,[#ifdef __BIG_ENDIAN__

sysdeps/unix/sysv/linux/arc/Makefile

@@ -11,12 +11,3 @@ ifeq ($(subdir),misc)
 sysdep_headers += sys/cachectl.h
 sysdep_routines += cacheflush
 endif
-
-abi-variants := arcle arcbe
-
-ifeq (,$(filter $(default-abi),$(abi-variants)))
-$(error Unknown ABI $(default-abi), must be one of $(abi-variants))
-endif
-
-abi-arcle-condition := !defined __BIG_ENDIAN__
-abi-arcbe-condition := defined __BIG_ENDIAN__