Nokia RX-51: Simplify copy kernel code
Expression (r + (r0 - r1)) produce same result as (r - (r1 - r0)). So it
does not matter which one is called. Always call the first option and
remove second one.
Signed-off-by: Pali Rohár <pali@kernel.org>
diff --git a/board/nokia/rx51/lowlevel_init.S b/board/nokia/rx51/lowlevel_init.S
index dd3c830..4f76e80 100644
--- a/board/nokia/rx51/lowlevel_init.S
+++ b/board/nokia/rx51/lowlevel_init.S
@@ -55,16 +55,13 @@
copy_kernel_start:
adr r0, relocaddr /* r0 - address of section relocaddr */
ldr r1, relocaddr /* r1 - address of relocaddr after relocation */
- cmp r0, r1
/* r4 - calculated offset */
- subhi r4, r0, r1
- sublo r4, r1, r0
+ sub r4, r0, r1
/* r0 - start of kernel before */
ldr r0, startaddr
- addhi r0, r0, r4
- sublo r0, r0, r4
+ add r0, r0, r4
ldr r1, kernoffs
add r0, r0, r1