diff options
Diffstat (limited to 'src/include/gpxe/efi/Base.h')
| -rw-r--r-- | src/include/gpxe/efi/Base.h | 80 |
1 files changed, 52 insertions, 28 deletions
diff --git a/src/include/gpxe/efi/Base.h b/src/include/gpxe/efi/Base.h index cfb54a40..b2552d80 100644 --- a/src/include/gpxe/efi/Base.h +++ b/src/include/gpxe/efi/Base.h @@ -1,5 +1,4 @@ /** @file - Root include file for Mde Package Base type modules This is the include file for any module of type base. Base modules only use @@ -57,34 +56,18 @@ struct _LIST_ENTRY { // Modifiers for Data Types used to self document code. // This concept is borrowed for UEFI specification. // -#ifndef IN -// -// Some other envirnments use this construct, so #ifndef to prevent -// mulitple definition. -// #define IN #define OUT #define OPTIONAL -#endif // -// Constants. They may exist in other build structures, so #ifndef them. -// -#ifndef TRUE -// // UEFI specification claims 1 and 0. We are concerned about the // complier portability so we did it this way. // #define TRUE ((BOOLEAN)(1==1)) -#endif - -#ifndef FALSE #define FALSE ((BOOLEAN)(0==1)) -#endif -#ifndef NULL #define NULL ((VOID *) 0) -#endif #define BIT0 0x00000001 #define BIT1 0x00000002 @@ -196,15 +179,11 @@ struct _LIST_ENTRY { // // Also support coding convention rules for var arg macros // -#ifndef VA_START - typedef CHAR8 *VA_LIST; #define VA_START(ap, v) (ap = (VA_LIST) & (v) + _INT_SIZE_OF (v)) #define VA_ARG(ap, t) (*(t *) ((ap += _INT_SIZE_OF (t)) - _INT_SIZE_OF (t))) #define VA_END(ap) (ap = (VA_LIST) 0) -#endif - // // Macro that returns the byte offset of a field in a data structure. // @@ -217,19 +196,20 @@ typedef CHAR8 *VA_LIST; #define _CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - (CHAR8 *) &(((TYPE *) 0)->Field))) /// +/// ALIGN_VALUE - aligns a value up to the next boundary of the given alignment. +/// +#define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) & ((Alignment) - 1))) + +/// /// ALIGN_POINTER - aligns a pointer to the lowest boundry /// -#define ALIGN_POINTER(p, s) ((VOID *) ((UINTN)(p) + (((s) - ((UINTN) (p))) & ((s) - 1)))) +#define ALIGN_POINTER(Pointer, Alignment) ((VOID *) (ALIGN_VALUE ((UINTN)(Pointer), (Alignment)))) /// /// ALIGN_VARIABLE - aligns a variable up to the next natural boundry for int size of a processor /// -#define ALIGN_VARIABLE(Value, Adjustment) \ - Adjustment = 0U; \ - if ((UINTN) (Value) % sizeof (UINTN)) { \ - (Adjustment) = (UINTN)(sizeof (UINTN) - ((UINTN) (Value) % sizeof (UINTN))); \ - } \ - (Value) = (UINTN)((UINTN) (Value) + (UINTN) (Adjustment)) +#define ALIGN_VARIABLE(Value) ALIGN_VALUE ((Value), sizeof (UINTN)) + // // Return the maximum of two operands. @@ -301,5 +281,49 @@ typedef INTN RETURN_STATUS; #define RETURN_WARN_WRITE_FAILURE ENCODE_WARNING (3) #define RETURN_WARN_BUFFER_TOO_SMALL ENCODE_WARNING (4) +/** + Returns a 16-bit signature built from 2 ASCII characters. + + @param A The first ASCII character. + @param B The second ASCII character. + + @return A 16-bit value built from the two ASCII characters specified by A and B. + +**/ +#define SIGNATURE_16(A, B) ((A) | (B << 8)) + +/** + Returns a 32-bit signature built from 4 ASCII characters. + + @param A The first ASCII character. + @param B The second ASCII character. + @param C The third ASCII character. + @param D The fourth ASCII character. + + @return A 32-bit value built from the two ASCII characters specified by A, B, + C and D. + +**/ +#define SIGNATURE_32(A, B, C, D) (SIGNATURE_16 (A, B) | (SIGNATURE_16 (C, D) << 16)) + +/** + Returns a 64-bit signature built from 8 ASCII characters. + + @param A The first ASCII character. + @param B The second ASCII character. + @param C The third ASCII character. + @param D The fourth ASCII character. + @param E The fifth ASCII character. + @param F The sixth ASCII character. + @param G The seventh ASCII character. + @param H The eighth ASCII character. + + @return A 64-bit value built from the two ASCII characters specified by A, B, + C, D, E, F, G and H. + +**/ +#define SIGNATURE_64(A, B, C, D, E, F, G, H) \ + (SIGNATURE_32 (A, B, C, D) | ((UINT64) (SIGNATURE_32 (E, F, G, H)) << 32)) + #endif |