Currently EAX is used as an intermediary in setting ESP to SEC_TOP_OF_STACK, and in passing SEC_TOP_OF_STACK to SecCoreStartupWithStack() as the "TopOfCurrentStack" argument.
In a later patch we'll use EAX differently, so replace it with EBX under the current use. Cc: Ard Biesheuvel <[email protected]> Cc: Jordan Justen <[email protected]> Cc: Ruiyu Ni <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <[email protected]> --- OvmfPkg/Sec/Ia32/SecEntry.nasm | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/OvmfPkg/Sec/Ia32/SecEntry.nasm b/OvmfPkg/Sec/Ia32/SecEntry.nasm index 7fee1c2b2e4f..54d074e621f6 100644 --- a/OvmfPkg/Sec/Ia32/SecEntry.nasm +++ b/OvmfPkg/Sec/Ia32/SecEntry.nasm @@ -40,8 +40,8 @@ ASM_PFX(_ModuleEntryPoint): ; %define SEC_TOP_OF_STACK (FixedPcdGet32 (PcdOvmfSecPeiTempRamBase) + \ FixedPcdGet32 (PcdOvmfSecPeiTempRamSize)) - mov eax, SEC_TOP_OF_STACK - mov esp, eax + mov ebx, SEC_TOP_OF_STACK + mov esp, ebx nop ; @@ -50,7 +50,7 @@ ASM_PFX(_ModuleEntryPoint): ; [esp+4] BootFirmwareVolumePtr ; [esp+8] TopOfCurrentStack ; - push eax + push ebx push ebp call ASM_PFX(SecCoreStartupWithStack) -- 2.14.1.3.gb7cf6e02401b _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
