VA_START, VA_END and VA_COPY are the same as the generic macros. VA_ARG was reverse engineered from MS ARM assembly output.
Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Pete Batard <p...@akeo.ie> --- MdePkg/Include/Base.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h index 02140a5ac2ee..f3467ecdc22f 100644 --- a/MdePkg/Include/Base.h +++ b/MdePkg/Include/Base.h @@ -631,6 +631,19 @@ struct _LIST_ENTRY { #define VA_COPY(Dest, Start) __va_copy (Dest, Start) +#elif defined(_M_ARM) +// +// MSFT ARM variable argument list support. +// Same as the generic macros below, except for VA_ARG that needs extra adjustment. +// + +typedef char* VA_LIST; + +#define VA_START(Marker, Parameter) (Marker = (VA_LIST) ((UINTN) & (Parameter) + _INT_SIZE_OF(Parameter))) +#define VA_ARG(Marker, TYPE) (*(TYPE *) ((Marker += _INT_SIZE_OF(TYPE) + ((-(INTN)Marker) & (sizeof(TYPE) - 1))) - _INT_SIZE_OF (TYPE))) +#define VA_END(Marker) (Marker = (VA_LIST) 0) +#define VA_COPY(Dest, Start) ((void)((Dest) = (Start))) + #elif defined(__GNUC__) #if defined(MDE_CPU_X64) && !defined(NO_MSABI_VA_FUNCS) -- 2.9.3.windows.2 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel