Hi Andrew, Please see my inline comment.
Thanks, Ted -----Original Message----- From: Andrew Fish <af...@apple.com> Sent: Thursday, April 7, 2022 8:06 AM To: devel@edk2.groups.io; Ni, Ray <ray...@intel.com> Cc: Kuo, Ted <ted....@intel.com>; Chiu, Chasel <chasel.c...@intel.com>; Desimone, Nathaniel L <nathaniel.l.desim...@intel.com>; Zeng, Star <star.z...@intel.com>; S, Ashraf Ali <ashraf.al...@intel.com> Subject: Re: [edk2-devel][PATCH v3 1/8] IntelFsp2Pkg: X64 compatible changes to support PEI in 64bit > On Apr 6, 2022, at 4:57 PM, Ni, Ray <ray...@intel.com> wrote: > >> -; UINT32 >> +; UINTN >> ; EFIAPI >> -; AsmReadEsp ( >> +; AsmReadStackPointer ( >> ; VOID >> ; ); >> ;------------------------------------------------------------------------------ >> -global ASM_PFX(AsmReadEsp) >> -ASM_PFX(AsmReadEsp): >> +global ASM_PFX(AsmReadStackPointer) >> +ASM_PFX(AsmReadStackPointer): >> mov eax, esp >> ret >> > > I guess it's possible that bootloader sets up the stack above 4G. > If that's the case, above code doesn't work. > > Is there an issue with the SecSwitchStack too? [Ted]: I believe we already handled it in IntelFsp2Pkg/FspSecCore/X64/Stack.nasm in the patch [edk2-devel][PATCH v3 4/8] IntelFsp2Pkg: FspSecCore support for X64. Thanks, Andrew Fish > > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#88495): https://edk2.groups.io/g/devel/message/88495 Mute This Topic: https://groups.io/mt/90294483/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
