|
@@ -758,6 +758,40 @@ typedef UINTN *BASE_LIST;
|
|
|
#define OFFSET_OF(TYPE, Field) ((UINTN) &(((TYPE *)0)->Field))
|
|
|
#endif
|
|
|
|
|
|
+/**
|
|
|
+ Returns the alignment requirement of a type.
|
|
|
+
|
|
|
+ @param TYPE The name of the type to retrieve the alignment requirement of.
|
|
|
+
|
|
|
+ @return Alignment requirement, in Bytes, of TYPE.
|
|
|
+**/
|
|
|
+#if defined (__cplusplus)
|
|
|
+//
|
|
|
+// Standard C++ operator.
|
|
|
+//
|
|
|
+#define ALIGNOF(TYPE) alignof (TYPE)
|
|
|
+#elif defined (__GNUC__) || defined (__clang__) || (defined (_MSC_VER) && _MSC_VER >= 1900)
|
|
|
+//
|
|
|
+// All supported versions of GCC and Clang, as well as MSVC 2015 and later,
|
|
|
+// support the standard operator _Alignof.
|
|
|
+//
|
|
|
+#define ALIGNOF(TYPE) _Alignof (TYPE)
|
|
|
+#elif defined (_MSC_EXTENSIONS)
|
|
|
+//
|
|
|
+// Earlier versions of MSVC, at least MSVC 2008 and later, support the vendor
|
|
|
+// extension __alignof.
|
|
|
+//
|
|
|
+#define ALIGNOF(TYPE) __alignof (TYPE)
|
|
|
+#else
|
|
|
+//
|
|
|
+// For compilers that do not support inbuilt alignof operators, use OFFSET_OF.
|
|
|
+// CHAR8 is known to have both a size and an alignment requirement of 1 Byte.
|
|
|
+// As such, A must be located exactly at the offset equal to its alignment
|
|
|
+// requirement.
|
|
|
+//
|
|
|
+#define ALIGNOF(TYPE) OFFSET_OF (struct { CHAR8 C; TYPE A; }, A)
|
|
|
+#endif
|
|
|
+
|
|
|
/**
|
|
|
Portable definition for compile time assertions.
|
|
|
Equivalent to C11 static_assert macro from assert.h.
|
|
@@ -793,6 +827,21 @@ STATIC_ASSERT (sizeof (CHAR16) == 2, "sizeof (CHAR16) does not meet UEFI Specif
|
|
|
STATIC_ASSERT (sizeof (L'A') == 2, "sizeof (L'A') does not meet UEFI Specification Data Type requirements");
|
|
|
STATIC_ASSERT (sizeof (L"A") == 4, "sizeof (L\"A\") does not meet UEFI Specification Data Type requirements");
|
|
|
|
|
|
+STATIC_ASSERT (ALIGNOF (BOOLEAN) == sizeof (BOOLEAN), "Alignment of BOOLEAN does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (INT8) == sizeof (INT8), "Alignment of INT8 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (UINT8) == sizeof (UINT8), "Alignment of INT16 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (INT16) == sizeof (INT16), "Alignment of INT16 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (UINT16) == sizeof (UINT16), "Alignment of UINT16 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (INT32) == sizeof (INT32), "Alignment of INT32 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (UINT32) == sizeof (UINT32), "Alignment of UINT32 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (INT64) == sizeof (INT64), "Alignment of INT64 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (UINT64) == sizeof (UINT64), "Alignment of UINT64 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (CHAR8) == sizeof (CHAR8), "Alignment of CHAR8 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (CHAR16) == sizeof (CHAR16), "Alignment of CHAR16 does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (INTN) == sizeof (INTN), "Alignment of INTN does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (UINTN) == sizeof (UINTN), "Alignment of UINTN does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (VOID *) == sizeof (VOID *), "Alignment of VOID * does not meet UEFI Specification Data Type requirements");
|
|
|
+
|
|
|
//
|
|
|
// The following three enum types are used to verify that the compiler
|
|
|
// configuration for enum types is compliant with Section 2.3.1 of the
|
|
@@ -816,6 +865,10 @@ STATIC_ASSERT (sizeof (__VERIFY_UINT8_ENUM_SIZE) == 4, "Size of enum does not me
|
|
|
STATIC_ASSERT (sizeof (__VERIFY_UINT16_ENUM_SIZE) == 4, "Size of enum does not meet UEFI Specification Data Type requirements");
|
|
|
STATIC_ASSERT (sizeof (__VERIFY_INT32_ENUM_SIZE) == 4, "Size of enum does not meet UEFI Specification Data Type requirements");
|
|
|
|
|
|
+STATIC_ASSERT (ALIGNOF (__VERIFY_UINT8_ENUM_SIZE) == sizeof (__VERIFY_UINT8_ENUM_SIZE), "Alignment of enum does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (__VERIFY_UINT16_ENUM_SIZE) == sizeof (__VERIFY_UINT16_ENUM_SIZE), "Alignment of enum does not meet UEFI Specification Data Type requirements");
|
|
|
+STATIC_ASSERT (ALIGNOF (__VERIFY_INT32_ENUM_SIZE) == sizeof (__VERIFY_INT32_ENUM_SIZE), "Alignment of enum does not meet UEFI Specification Data Type requirements");
|
|
|
+
|
|
|
/**
|
|
|
Macro that returns a pointer to the data structure that contains a specified field of
|
|
|
that data structure. This is a lightweight method to hide information by placing a
|
|
@@ -837,6 +890,49 @@ STATIC_ASSERT (sizeof (__VERIFY_INT32_ENUM_SIZE) == 4, "Size of enum does not me
|
|
|
**/
|
|
|
#define BASE_CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - OFFSET_OF (TYPE, Field)))
|
|
|
|
|
|
+/**
|
|
|
+ Checks whether a value is a power of two.
|
|
|
+
|
|
|
+ @param Value The value to check.
|
|
|
+
|
|
|
+ @retval TRUE Value is a power of two.
|
|
|
+ @retval FALSE Value is not a power of two.
|
|
|
+**/
|
|
|
+#define IS_POW2(Value) ((Value) != 0U && ((Value) & ((Value) - 1U)) == 0U)
|
|
|
+
|
|
|
+/**
|
|
|
+ Checks whether a value is aligned by a specified alignment.
|
|
|
+
|
|
|
+ @param Value The value to check.
|
|
|
+ @param Alignment The alignment boundary used to check against.
|
|
|
+
|
|
|
+ @retval TRUE Value is aligned by Alignment.
|
|
|
+ @retval FALSE Value is not aligned by Alignment.
|
|
|
+**/
|
|
|
+#define IS_ALIGNED(Value, Alignment) (((Value) & ((Alignment) - 1U)) == 0U)
|
|
|
+
|
|
|
+/**
|
|
|
+ Checks whether a pointer or address is aligned by a specified alignment.
|
|
|
+
|
|
|
+ @param Address The pointer or address to check.
|
|
|
+ @param Alignment The alignment boundary used to check against.
|
|
|
+
|
|
|
+ @retval TRUE Address is aligned by Alignment.
|
|
|
+ @retval FALSE Address is not aligned by Alignment.
|
|
|
+**/
|
|
|
+#define ADDRESS_IS_ALIGNED(Address, Alignment) IS_ALIGNED ((UINTN) (Address), Alignment)
|
|
|
+
|
|
|
+/**
|
|
|
+ Determines the addend to add to a value to round it up to the next boundary of
|
|
|
+ a specified alignment.
|
|
|
+
|
|
|
+ @param Value The value to round up.
|
|
|
+ @param Alignment The alignment boundary used to return the addend.
|
|
|
+
|
|
|
+ @return Addend to round Value up to alignment boundary Alignment.
|
|
|
+**/
|
|
|
+#define ALIGN_VALUE_ADDEND(Value, Alignment) (((Alignment) - (Value)) & ((Alignment) - 1U))
|
|
|
+
|
|
|
/**
|
|
|
Rounds a value up to the next boundary using a specified alignment.
|
|
|
|
|
@@ -849,7 +945,7 @@ STATIC_ASSERT (sizeof (__VERIFY_INT32_ENUM_SIZE) == 4, "Size of enum does not me
|
|
|
@return A value up to the next boundary.
|
|
|
|
|
|
**/
|
|
|
-#define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) & ((Alignment) - 1)))
|
|
|
+#define ALIGN_VALUE(Value, Alignment) ((Value) + ALIGN_VALUE_ADDEND (Value, Alignment))
|
|
|
|
|
|
/**
|
|
|
Adjust a pointer by adding the minimum offset required for it to be aligned on
|