{ \
if (MODE == QImode) \
UNSIGNEDP = 1; \
+ else if (MODE == HImode) \
+ UNSIGNEDP = 0; \
(MODE) = SImode; \
}
in instructions that operate on numbered bit-fields. */
#define BITS_BIG_ENDIAN 0
-/* Define this if most significant byte of a word is the lowest numbered. */
+/* Define this if most significant byte of a word is the lowest numbered.
+ Most ARM processors are run in little endian mode, but it should now be
+ possible to build the compiler to support big endian code. (Note: This
+ is currently a compiler-build-time option, not a run-time one. */
+#ifndef BYTES_BIG_ENDIAN
#define BYTES_BIG_ENDIAN 0
+#endif
/* Define this if most significant word of a multiword number is the lowest
numbered. */
will either zero-extend or sign-extend. The value of this macro should
be the code that says which one of the two operations is implicitly
done, NIL if none. */
-#define LOAD_EXTEND_OP(MODE) \
- ((MODE) == QImode ? ZERO_EXTEND : NIL)
+#define LOAD_EXTEND_OP(MODE) \
+ ((MODE) == QImode ? ZERO_EXTEND \
+ : ((BYTES_BIG_ENDIAN && (MODE) == HImode) ? SIGN_EXTEND : NIL))
/* Define this if zero-extension is slow (more than one real instruction).
On the ARM, it is more than one instruction only if not fetching from