mirror of https://github.com/acidanthera/audk.git
7619eed8aa
Due to the introduction of NULL pointer detection feature, page 0 will be
disabled if the feature is enabled, which will cause legacy code failed to
update legacy data in page 0. This macro is introduced to make sure the
page 0 is enabled before those code and restore the original status of it
afterwards.
Another reason to introduce this macro is to eliminate the dependency on
the PcdNullPointerDetectionPropertyMask. Because this is a new PCD, it
could cause some backward compatibility issue for some old packages.
This macro will simply check if the page 0 is disabled or not. If it's
disabled, it will enable it before code updating page 0 and disable it
afterwards. Otherwise, this macro will do nothing to page 0.
The usage of the macro will be look like (similar to DEBUG_CODE macro):
ACCESS_PAGE0_CODE(
<code accessing page 0>
);
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
|
||
|---|---|---|
| .. | ||
| AcpiS3Save.h | ||
| AcpiSupport.h | ||
| BootScriptSave.h | ||
| CpuIo.h | ||
| DataHub.h | ||
| FirmwareVolume.h | ||
| FrameworkFirmwareVolumeBlock.h | ||
| FrameworkFormBrowser.h | ||
| FrameworkFormCallback.h | ||
| FrameworkHii.h | ||
| FrameworkMpService.h | ||
| Legacy8259.h | ||
| LegacyBios.h | ||
| LegacyBiosPlatform.h | ||
| LegacyInterrupt.h | ||
| LegacyRegion.h | ||
| SectionExtraction.h | ||
| SmmAccess.h | ||
| SmmBase.h | ||
| SmmControl.h | ||
| SmmCpuIo.h | ||
| SmmCpuSaveState.h | ||
| SmmGpiDispatch.h | ||
| SmmIchnDispatch.h | ||
| SmmPeriodicTimerDispatch.h | ||
| SmmPowerButtonDispatch.h | ||
| SmmStandbyButtonDispatch.h | ||
| SmmSwDispatch.h | ||
| SmmSxDispatch.h | ||
| SmmUsbDispatch.h | ||