From 03e9db1575f063f968f5d369ec648e22df252a87 Mon Sep 17 00:00:00 2001 From: Jordan Justen Date: Mon, 1 Sep 2014 17:24:08 +0000 Subject: MdePkg BaseLib NASM Thunk16: Initialize _16GdtrBase to 0 Previously we were setting it to the start of the GDT in the UEFI driver's copy of BaseLib. This address is irrelavent, since the C code will initialize it to the cooresponding address after the Thunk16 code has been placed in low memory. Additionally, initializing this was causing a link error for the XCLANG toolchain. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen Reviewed-by: Liming Gao git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16025 6f19259b-4bc3-4df7-8a09-765794883524 --- MdePkg/Library/BaseLib/Ia32/Thunk16.nasm | 2 +- MdePkg/Library/BaseLib/X64/Thunk16.nasm | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'MdePkg') diff --git a/MdePkg/Library/BaseLib/Ia32/Thunk16.nasm b/MdePkg/Library/BaseLib/Ia32/Thunk16.nasm index c08e41de9d..e8468a3fbf 100644 --- a/MdePkg/Library/BaseLib/Ia32/Thunk16.nasm +++ b/MdePkg/Library/BaseLib/Ia32/Thunk16.nasm @@ -139,7 +139,7 @@ _16Idtr: _16Gdtr: DW GdtEnd - _NullSegDesc - 1 _16GdtrBase: - DD _NullSegDesc + DD 0 ;------------------------------------------------------------------------------ ; _ToUserCode() takes control in real mode before passing control to user code. diff --git a/MdePkg/Library/BaseLib/X64/Thunk16.nasm b/MdePkg/Library/BaseLib/X64/Thunk16.nasm index d15984b01c..6084fac8c4 100644 --- a/MdePkg/Library/BaseLib/X64/Thunk16.nasm +++ b/MdePkg/Library/BaseLib/X64/Thunk16.nasm @@ -145,7 +145,7 @@ _EntryPoint: _16Gdtr: DW GDT_SIZE - 1 _16GdtrBase: - DQ _NullSeg + DQ 0 _16Idtr: DW (1 << 10) - 1 DD 0 -- cgit v1.2.3