Revision: 14911
http://sourceforge.net/p/edk2/code/14911
Author: oliviermartin
Date: 2013-11-28 21:38:56 +0000 (Thu, 28 Nov 2013)
Log Message:
-----------
ArmPkg/CpuDxe: Removed LR adjustement for SVC call
The Link Register (LR) does not need adjustement when receiving a Supervisor
Call (SVC).
Note: SVC might be generated by debuggers.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <[email protected]>
Modified Paths:
--------------
trunk/edk2/ArmPkg/Drivers/CpuDxe/ArmV6/ExceptionSupport.S
trunk/edk2/ArmPkg/Drivers/CpuDxe/ArmV6/ExceptionSupport.asm
Modified: trunk/edk2/ArmPkg/Drivers/CpuDxe/ArmV6/ExceptionSupport.S
===================================================================
--- trunk/edk2/ArmPkg/Drivers/CpuDxe/ArmV6/ExceptionSupport.S 2013-11-28
21:38:32 UTC (rev 14910)
+++ trunk/edk2/ArmPkg/Drivers/CpuDxe/ArmV6/ExceptionSupport.S 2013-11-28
21:38:56 UTC (rev 14911)
@@ -120,7 +120,6 @@
bx R1
ASM_PFX(SoftwareInterruptEntry):
- sub LR, LR, #4 @ Only -2 for Thumb, adjust in
CommonExceptionEntry
srsdb #0x13! @ Store return state on SVC stack
@ We are already in SVC mode
stmfd SP!,{LR} @ Store the link register for the
current mode
Modified: trunk/edk2/ArmPkg/Drivers/CpuDxe/ArmV6/ExceptionSupport.asm
===================================================================
--- trunk/edk2/ArmPkg/Drivers/CpuDxe/ArmV6/ExceptionSupport.asm 2013-11-28
21:38:32 UTC (rev 14910)
+++ trunk/edk2/ArmPkg/Drivers/CpuDxe/ArmV6/ExceptionSupport.asm 2013-11-28
21:38:56 UTC (rev 14911)
@@ -115,7 +115,6 @@
bx R1
SoftwareInterruptEntry
- sub LR, LR, #4 ; Only -2 for Thumb, adjust in
CommonExceptionEntry
srsfd #0x13! ; Store return state on SVC stack
; We are already in SVC mode
stmfd SP!,{LR} ; Store the link register for the
current mode
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