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This checkin addresses the compatibility issue of passing arguments of type VA_LIST between components. The type VA_LIST is mapped onto the compiler specific implementation of varargs. As a result, modules build with different compilers may not use the same VA_LIST structure. The solution to this issue is to define a new type called BASE_LIST that is a compiler independent method of passing varargs between modules.

Browse Source 
Add BASE_LIST type to Base.h
Add BAS_ARG() macro to Base.h
Add 4 functions to PrintLib.h that use BASE_LIST.
Change ReportStatsuCodeExtractDebugInfo() from ReportStatusCodeLib.h to take a BASE_LIST argument instead of a VA_LIST argument
Add the 4 new functions to BasePrintLib implementation that use BASE_LIST
Update BaseReportStatusCodeLib implementation of ReportStatsuCodeExtractDebugInfo() to use a BASE_LIST argument instead of a VA_LIST argument



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8404 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney
2009-05-30 23:45:50 +00:00
parent 37e97c51dd
commit 2075236eef
7 changed files with 492 additions and 73 deletions
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41
MdePkg/Include/Base.h
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@@ -333,6 +333,15 @@ struct _LIST_ENTRY {
// }
//
/**
Return the size of argument that has been aligned to sizeof (UINTN).
@param n The parameter size is to be aligned.
@return The aligned size
**/
#define _INT_SIZE_OF(n) ((sizeof (n) + sizeof (UINTN) - 1) &~(sizeof (UINTN) - 1))
#if defined(__GNUC__)
//
// Use GCC builtin macros for variable argument lists.
@@ -346,15 +355,6 @@ typedef __builtin_va_list VA_LIST;
#define VA_END(Marker) __builtin_va_end (Marker)
#else
/**
Return the size of argument that has been aligned to sizeof (UINTN).
@param n The parameter size is to be aligned.
@return The aligned size
**/
#define _INT_SIZE_OF(n) ((sizeof (n) + sizeof (UINTN) - 1) &~(sizeof (UINTN) - 1))
///
/// Pointer to the start of a variable argument list. Same as CHAR8 *.
///
@@ -409,6 +409,29 @@ typedef CHAR8 *VA_LIST;
#endif
///
/// Pointer to the start of a variable argument list stored in a memory buffer. Same as UINT8 *.
///
typedef UINTN *BASE_LIST;
/**
Returns an argument of a specified type from a variable argument list and updates
the pointer to the variable argument list to point to the next argument.
This function returns an argument of the type specified by TYPE from the beginning
of the variable argument list specified by Marker. Marker is then updated to point
to the next argument in the variable argument list. The method for computing the
pointer to the next argument in the argument list is CPU specific following the EFIAPI ABI.
@param Marker Pointer to the beginning of a variable argument list.
@param TYPE The type of argument to retrieve from the beginning
of the variable argument list.
@return An argument of the type specified by TYPE.
**/
#define BASE_ARG(Marker, TYPE) (*(TYPE *)((UINT8 *)(Marker = (BASE_LIST)((UINT8 *)Marker + _INT_SIZE_OF (TYPE))) - _INT_SIZE_OF (TYPE)))
/**
Macro that returns the byte offset of a field in a data structure.