target-arm: implement BE32 mode in system emulation
System emulation only has a little-endian target; BE32 mode
is implemented by adjusting the low bits of the address
for every byte and halfword load and store. 64-bit accesses
flip the low and high words.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[PC changes:
* rebased against master (Jan 2016)
]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 279c91f..066ff67 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -2033,9 +2033,8 @@
#endif
sctlr_b;
#else
- /* We do not implement BE32 mode for system-mode emulation, but
- * anyway it would always do little-endian accesses with
- * TARGET_WORDS_BIGENDIAN = 0.
+ /* All code access in ARM is little endian, and there are no loaders
+ * doing swaps that need to be reversed
*/
return 0;
#endif
