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MdePkg/BaseLib: Add stack switch related definitions for IA32

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The new definitions include two structures

  IA32_TASK_STATE_SEGMENT
  IA32_TSS_DESCRIPTOR

two macros

  IA32_GDT_TYPE_TSS
  IA32_GDT_ALIGNMENT

and one API

  VOID
  EFIAPI
  AsmWriteTr (
    IN UINT16 Selector
    );

They're needed to setup task gate and interrupt stack table for stack switch.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Suggested-by: Ayellet Wolman <ayellet.wolman@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jeff Fan <vanjeff_919@hotmail.com>
Reviewed-by: Jiewen.yao@intel.com
This commit is contained in:
Jian J Wang
2017-12-07 20:14:35 +08:00
committed by Star Zeng
parent 408b833049
commit 364a54742f
4 changed files with 193 additions and 0 deletions
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3
MdePkg/Library/BaseLib/BaseLib.inf
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@@ -67,6 +67,8 @@
BaseLibInternals.h
[Sources.Ia32]
Ia32/WriteTr.nasm
Ia32/Wbinvd.c | MSFT
Ia32/WriteMm7.c | MSFT
Ia32/WriteMm6.c | MSFT
@@ -447,6 +449,7 @@
X64/EnableCache.asm
X64/DisableCache.nasm
X64/DisableCache.asm
X64/WriteTr.nasm
X64/CpuBreakpoint.c | MSFT
X64/WriteMsr64.c | MSFT