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Update comments for PeiReportStatusCodeLib. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8529 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
xli24 2009-06-11 07:54:59 +00:00
parent 2cbfa7c7ee
commit 6b27e0f05d
1 changed files with 9 additions and 1 deletions
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10
IntelFrameworkModulePkg/Library/PeiReportStatusCodeLib/ReportStatusCodeLib.c
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@ -259,11 +259,19 @@ ReportStatusCodeExtractDebugInfo (
*ErrorLevel = DebugInfo->ErrorLevel;
//
// Here the address returned in Marker is 64-bit aligned.
// It must be noticed that EFI_DEBUG_INFO follows EFI_STATUS_CODE_DATA, whose size is
// 20 bytes. The size of EFI_DEBUG_INFO is 4 bytes, so we can ensure that Marker
// returned is 64-bit aligned.
// 64-bit aligned is a must, otherwise retrieving 64-bit parameter from BASE_LIST will
// cause unalignment exception.
//
*Marker = (BASE_LIST) (DebugInfo + 1);
//
// The first 12 * UINTN bytes of the string are really an
// argument stack to support varargs on the Format string.
//
*Marker = (BASE_LIST) (DebugInfo + 1);
*Format = (CHAR8 *)(((UINT64 *)*Marker) + 12);
return TRUE;