From fe295078f26cc08652e167783722fad6bb089d81 Mon Sep 17 00:00:00 2001 From: andrewfish Date: Wed, 8 Dec 2010 00:14:23 +0000 Subject: Add vpush/vpop to the exception handler as we added CopyMem/SetMem that can use NEON registers to speed things up. This means we need to save state so we don't blow up a CopyMem. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11130 6f19259b-4bc3-4df7-8a09-765794883524 --- ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm') diff --git a/ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm b/ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm index 8584ef0794..a8a477026e 100644 --- a/ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm +++ b/ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm @@ -243,6 +243,8 @@ NoAdjustNeeded ; R0 is ExceptionType mov R1,SP ; R1 is SystemContext + vpush {d0-d15} ; save vstm registers in case they are used in optimizations + /* VOID EFIAPI @@ -253,6 +255,8 @@ CommonCExceptionHandler ( */ blx CommonCExceptionHandler ; Call exception handler + + vpop {d0-d15} ldr R1, [SP, #0x4c] ; Restore EFI_SYSTEM_CONTEXT_ARM.IFSR mcr p15, 0, R1, c5, c0, 1 ; Write IFSR -- cgit v1.2.3