Thumb-2: Implement the unified arch/arm/lib functions

This patch adds the ARM/Thumb-2 unified support for the arch/arm/lib/*
files.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>



diff --git a/arch/arm/lib/io-writesw-armv4.S b/arch/arm/lib/io-writesw-armv4.S
index d658561..ff4f71b 100644
--- a/arch/arm/lib/io-writesw-armv4.S
+++ b/arch/arm/lib/io-writesw-armv4.S
@@ -75,7 +75,10 @@
 #endif
 
 .Loutsw_noalign:
-		ldr	r3, [r1, -r3]!
+ ARM(		ldr	r3, [r1, -r3]!	)
+ THUMB(		rsb	r3, r3, #0	)
+ THUMB(		ldr	r3, [r1, r3]	)
+ THUMB(		sub	r1, r3		)
 		subcs	r2, r2, #1
 		bcs	2f
 		subs	r2, r2, #2