ArmPkg: Tidy assembler code

- Fixed typo
- Removed unreachable 'dead' loop

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15277 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.S

@@ -87,7 +87,7 @@ ASM_PFX(CPSRMaskInsert):    @ on entry, r0 is the mask and r1 is the field to in
   isb
   mov     sp, r3            @ restore stack pointer
   ldmfd   sp!, {r4-r12, lr} @ restore registers
-  bx      lr                @ return (hopefully thumb-safe!)             @ return (hopefully thumb-safe!)
+  bx      lr                @ return (hopefully thumb-safe!)
 
 ASM_PFX(CPSRRead):
   mrs     r0, cpsr

ArmPkg/Library/ArmLib/Common/Arm/ArmLibSupport.asm

@@ -171,14 +171,14 @@ ArmWriteMVBar
   
 ArmCallWFE
   wfe
-  blx   lr
+  bx      lr
 
 ArmCallSEV
   sev
-  blx   lr
+  bx      lr
 
 ArmReadSctlr
-  mrc     p15, 0, R0, c1, c0, 0      // Read SCTLR into R0 (Read control register configuration data)
-  bx	  lr
+  mrc     p15, 0, r0, c1, c0, 0      // Read SCTLR into R0 (Read control register configuration data)
+  bx	    lr
 
   END