This patch reset x11 to zero before using it. x11 is marked as caller saved register, therefore before using it default (reset) value should be assigned.
If ArmPlatformPeiBootAction function is using x11 then some of calculation in this routine may go wrong. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Udit Kumar <udit.ku...@nxp.com> --- ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S | 1 + 1 file changed, 1 insertion(+) diff --git a/ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S b/ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S index a81709d..d391fc1 100644 --- a/ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S +++ b/ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S @@ -60,6 +60,7 @@ _SetupStack: // Because the 'push' instruction is equivalent to 'stmdb' (decrement before), we need to increment // one to the top of the stack. We check if incrementing one does not overflow (case of DRAM at the // top of the memory space) + mov x11, 0 adds x11, x1, #1 b.cs _SetupOverflowStack -- 1.9.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
