[edk2-devel] [PATCH 3/5] MdePkg/BaseLib: use normal register init in ARM SetJump implementations

[Leif Lindholm]

There may be architectures on which there are benefits to
  eor r0, r0(, r0)
but ARM was never one of them. Change to more readable
  mov r0, #0
instead.

Signed-off-by: Leif Lindholm <leif at nuviainc.com>
---
 MdePkg/Library/BaseLib/Arm/SetJumpLongJump.S   | 2 +-
 MdePkg/Library/BaseLib/Arm/SetJumpLongJump.asm | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/MdePkg/Library/BaseLib/Arm/SetJumpLongJump.S b/MdePkg/Library/BaseLib/Arm/SetJumpLongJump.S
index 54b11ad2197c..407df5f41ac5 100644
--- a/MdePkg/Library/BaseLib/Arm/SetJumpLongJump.S
+++ b/MdePkg/Library/BaseLib/Arm/SetJumpLongJump.S
@@ -36,7 +36,7 @@ ASM_PFX(SetJump):
   pop   {r0, lr}
   mov   r3, r13
   stmia r0, {r3-r12,r14}
-  eor   r0, r0, r0
+  mov   r0, #0
   bx    lr
 
 #/**
diff --git a/MdePkg/Library/BaseLib/Arm/SetJumpLongJump.asm b/MdePkg/Library/BaseLib/Arm/SetJumpLongJump.asm
index 6d47033975f2..3a45f045460a 100644
--- a/MdePkg/Library/BaseLib/Arm/SetJumpLongJump.asm
+++ b/MdePkg/Library/BaseLib/Arm/SetJumpLongJump.asm
@@ -36,7 +36,7 @@ SetJump
   POP  {R0, LR}
   MOV  R3, R13
   STM  R0, {R3-R12,R14}
-  EOR  R0, R0
+  MOV  RO, #0
   BX   LR
 
 ;/**
-- 
2.20.1



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#65814): https://edk2.groups.io/g/devel/message/65814
Mute This Topic: https://groups.io/mt/77247141/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-