X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FInclude%2FBase.h;h=bc877d8125a5a63de187ca7e5b772be00ed055d9;hb=a5274cdc87d952a4609b0baef92df3a4b6a36059;hp=fa02f0f5307baf7cdaad89e2d07bb25fd44b95f6;hpb=7bbc624a7dbc054a7a6a59482717b264cdbf4b4e;p=mirror_edk2.git
diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h
index fa02f0f530..bc877d8125 100644
--- a/MdePkg/Include/Base.h
+++ b/MdePkg/Include/Base.h
@@ -6,7 +6,7 @@
environment. There are a set of base libraries in the Mde Package that can
be used to implement base modules.
-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -27,6 +27,12 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
//
#include
+#if defined(_MSC_EXTENSIONS)
+//
+// Disable warning when last field of data structure is a zero sized array.
+//
+#pragma warning ( disable : 4200 )
+#endif
/**
Verifies the storage size of a given data type.
@@ -57,12 +63,35 @@ VERIFY_SIZE_OF (UINT64, 8);
VERIFY_SIZE_OF (CHAR8, 1);
VERIFY_SIZE_OF (CHAR16, 2);
+//
+// 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
+// UEFI 2.3 Specification. These enum types and enum values are not
+// intended to be used. A prefix of '__' is used avoid conflicts with
+// other types.
+//
+typedef enum {
+ __VerifyUint8EnumValue = 0xff
+} __VERIFY_UINT8_ENUM_SIZE;
+
+typedef enum {
+ __VerifyUint16EnumValue = 0xffff
+} __VERIFY_UINT16_ENUM_SIZE;
+
+typedef enum {
+ __VerifyUint32EnumValue = 0xffffffff
+} __VERIFY_UINT32_ENUM_SIZE;
+
+VERIFY_SIZE_OF (__VERIFY_UINT8_ENUM_SIZE, 4);
+VERIFY_SIZE_OF (__VERIFY_UINT16_ENUM_SIZE, 4);
+VERIFY_SIZE_OF (__VERIFY_UINT32_ENUM_SIZE, 4);
+
//
// The Microsoft* C compiler can removed references to unreferenced data items
// if the /OPT:REF linker option is used. We defined a macro as this is a
// a non standard extension
//
-#if defined(_MSC_EXTENSIONS) && !defined (MDE_CPU_EBC)
+#if defined(_MSC_EXTENSIONS) && _MSC_VER < 1800 && !defined (MDE_CPU_EBC)
///
/// Remove global variable from the linked image if there are no references to
/// it after all compiler and linker optimizations have been performed.
@@ -79,22 +108,152 @@ VERIFY_SIZE_OF (CHAR16, 2);
#endif
//
-// For symbol name in GNU assembly code, an extra "_" is necessary
+// Should be used in combination with NORETURN to avoid 'noreturn' returns
+// warnings.
//
-#if defined(__GNUC__)
- ///
- /// Private worker functions for ASM_PFX()
- ///
- #define _CONCATENATE(a, b) __CONCATENATE(a, b)
- #define __CONCATENATE(a, b) a ## b
+#ifndef UNREACHABLE
+ #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 4)
+ ///
+ /// Signal compilers and analyzers that this call is not reachable. It is
+ /// up to the compiler to remove any code past that point.
+ /// Not implemented by GCC 4.4 or earlier.
+ ///
+ #define UNREACHABLE() __builtin_unreachable ()
+ #elif defined (__has_feature)
+ #if __has_builtin (__builtin_unreachable)
+ ///
+ /// Signal compilers and analyzers that this call is not reachable. It is
+ /// up to the compiler to remove any code past that point.
+ ///
+ #define UNREACHABLE() __builtin_unreachable ()
+ #endif
+ #endif
+
+ #ifndef UNREACHABLE
+ ///
+ /// Signal compilers and analyzers that this call is not reachable. It is
+ /// up to the compiler to remove any code past that point.
+ ///
+ #define UNREACHABLE()
+ #endif
+#endif
- ///
- /// The __USER_LABEL_PREFIX__ macro predefined by GNUC represents the prefix
- /// on symbols in assembly language.
- ///
- #define ASM_PFX(name) _CONCATENATE (__USER_LABEL_PREFIX__, name)
+//
+// Signaling compilers and analyzers that a certain function cannot return may
+// remove all following code and thus lead to better optimization and less
+// false positives.
+//
+#ifndef NORETURN
+ #if defined (__GNUC__) || defined (__clang__)
+ ///
+ /// Signal compilers and analyzers that the function cannot return.
+ /// It is up to the compiler to remove any code past a call to functions
+ /// flagged with this attribute.
+ ///
+ #define NORETURN __attribute__((noreturn))
+ #elif defined(_MSC_EXTENSIONS) && !defined(MDE_CPU_EBC)
+ ///
+ /// Signal compilers and analyzers that the function cannot return.
+ /// It is up to the compiler to remove any code past a call to functions
+ /// flagged with this attribute.
+ ///
+ #define NORETURN __declspec(noreturn)
+ #else
+ ///
+ /// Signal compilers and analyzers that the function cannot return.
+ /// It is up to the compiler to remove any code past a call to functions
+ /// flagged with this attribute.
+ ///
+ #define NORETURN
+ #endif
+#endif
+
+//
+// Should be used in combination with ANALYZER_NORETURN to avoid 'noreturn'
+// returns warnings.
+//
+#ifndef ANALYZER_UNREACHABLE
+ #ifdef __clang_analyzer__
+ #if __has_builtin (__builtin_unreachable)
+ ///
+ /// Signal the analyzer that this call is not reachable.
+ /// This excludes compilers.
+ ///
+ #define ANALYZER_UNREACHABLE() __builtin_unreachable ()
+ #endif
+ #endif
+
+ #ifndef ANALYZER_UNREACHABLE
+ ///
+ /// Signal the analyzer that this call is not reachable.
+ /// This excludes compilers.
+ ///
+ #define ANALYZER_UNREACHABLE()
+ #endif
+#endif
+
+//
+// Static Analyzers may issue errors about potential NULL-dereferences when
+// dereferencing a pointer, that has been checked before, outside of a
+// NULL-check. This may lead to false positives, such as when using ASSERT()
+// for verification.
+//
+#ifndef ANALYZER_NORETURN
+ #ifdef __has_feature
+ #if __has_feature (attribute_analyzer_noreturn)
+ ///
+ /// Signal analyzers that the function cannot return.
+ /// This excludes compilers.
+ ///
+ #define ANALYZER_NORETURN __attribute__((analyzer_noreturn))
+ #endif
+ #endif
+
+ #ifndef ANALYZER_NORETURN
+ ///
+ /// Signal the analyzer that the function cannot return.
+ /// This excludes compilers.
+ ///
+ #define ANALYZER_NORETURN
+ #endif
+#endif
+
+///
+/// Tell the code optimizer that the function will return twice.
+/// This prevents wrong optimizations which can cause bugs.
+///
+#ifndef RETURNS_TWICE
+ #if defined (__GNUC__) || defined (__clang__)
+ ///
+ /// Tell the code optimizer that the function will return twice.
+ /// This prevents wrong optimizations which can cause bugs.
+ ///
+ #define RETURNS_TWICE __attribute__((returns_twice))
+ #else
+ ///
+ /// Tell the code optimizer that the function will return twice.
+ /// This prevents wrong optimizations which can cause bugs.
+ ///
+ #define RETURNS_TWICE
+ #endif
#endif
+//
+// For symbol name in assembly code, an extra "_" is sometimes necessary
+//
+
+///
+/// Private worker functions for ASM_PFX()
+///
+#define _CONCATENATE(a, b) __CONCATENATE(a, b)
+#define __CONCATENATE(a, b) a ## b
+
+///
+/// The __USER_LABEL_PREFIX__ macro predefined by GNUC represents the prefix
+/// on symbols in assembly language.
+///
+#define ASM_PFX(name) _CONCATENATE (__USER_LABEL_PREFIX__, name)
+
#if __APPLE__
//
// Apple extension that is used by the linker to optimize code size
@@ -126,6 +285,20 @@ typedef struct {
UINT8 Data4[8];
} GUID;
+///
+/// 4-byte buffer. An IPv4 internet protocol address.
+///
+typedef struct {
+ UINT8 Addr[4];
+} IPv4_ADDRESS;
+
+///
+/// 16-byte buffer. An IPv6 internet protocol address.
+///
+typedef struct {
+ UINT8 Addr[16];
+} IPv6_ADDRESS;
+
//
// 8-bytes unsigned value that represents a physical system address.
//
@@ -186,7 +359,7 @@ struct _LIST_ENTRY {
//
// UEFI specification claims 1 and 0. We are concerned about the
-// complier portability so we did it this way.
+// compiler portability so we did it this way.
//
///
@@ -206,6 +379,30 @@ struct _LIST_ENTRY {
///
#define NULL ((VOID *) 0)
+//
+// Null character
+//
+#define CHAR_NULL 0x0000
+
+///
+/// Maximum values for common UEFI Data Types
+///
+#define MAX_INT8 ((INT8)0x7F)
+#define MAX_UINT8 ((UINT8)0xFF)
+#define MAX_INT16 ((INT16)0x7FFF)
+#define MAX_UINT16 ((UINT16)0xFFFF)
+#define MAX_INT32 ((INT32)0x7FFFFFFF)
+#define MAX_UINT32 ((UINT32)0xFFFFFFFF)
+#define MAX_INT64 ((INT64)0x7FFFFFFFFFFFFFFFULL)
+#define MAX_UINT64 ((UINT64)0xFFFFFFFFFFFFFFFFULL)
+
+///
+/// Minimum values for the signed UEFI Data Types
+///
+#define MIN_INT8 (((INT8) -127) - 1)
+#define MIN_INT16 (((INT16) -32767) - 1)
+#define MIN_INT32 (((INT32) -2147483647) - 1)
+#define MIN_INT64 (((INT64) -9223372036854775807LL) - 1)
#define BIT0 0x00000001
#define BIT1 0x00000002
@@ -383,21 +580,24 @@ struct _LIST_ENTRY {
#define BASE_8EB 0x8000000000000000ULL
//
-// Support for variable length argument lists using the ANSI standard.
+// Support for variable argument lists in freestanding edk2 modules.
//
-// Since we are using the ANSI standard we used the standard naming and
-// did not follow the coding convention
+// For modules that use the ISO C library interfaces for variable
+// argument lists, refer to "StdLib/Include/stdarg.h".
//
// VA_LIST - typedef for argument list.
// VA_START (VA_LIST Marker, argument before the ...) - Init Marker for use.
// VA_END (VA_LIST Marker) - Clear Marker
-// VA_ARG (VA_LIST Marker, var arg size) - Use Marker to get an argument from
-// the ... list. You must know the size and pass it in this macro.
+// VA_ARG (VA_LIST Marker, var arg type) - Use Marker to get an argument from
+// the ... list. You must know the type and pass it in this macro. Type
+// must be compatible with the type of the actual next argument (as promoted
+// according to the default argument promotions.)
// VA_COPY (VA_LIST Dest, VA_LIST Start) - Initialize Dest as a copy of Start.
//
-// example:
+// Example:
//
// UINTN
+// EFIAPI
// ExampleVarArg (
// IN UINTN NumberOfArgs,
// ...
@@ -413,15 +613,21 @@ struct _LIST_ENTRY {
// VA_START (Marker, NumberOfArgs);
// for (Index = 0, Result = 0; Index < NumberOfArgs; Index++) {
// //
-// // The ... list is a series of UINTN values, so average them up.
+// // The ... list is a series of UINTN values, so sum them up.
// //
// Result += VA_ARG (Marker, UINTN);
// }
//
// VA_END (Marker);
-// return Result
+// return Result;
// }
//
+// Notes:
+// - Functions that call VA_START() / VA_END() must have a variable
+// argument list and must be declared EFIAPI.
+// - Functions that call VA_COPY() / VA_END() must be declared EFIAPI.
+// - Functions that only use VA_LIST and VA_ARG() need not be EFIAPI.
+//
/**
Return the size of argument that has been aligned to sizeof (UINTN).
@@ -462,7 +668,43 @@ struct _LIST_ENTRY {
#define VA_COPY(Dest, Start) __va_copy (Dest, Start)
-#elif defined(__GNUC__) && !defined(NO_BUILTIN_VA_FUNCS)
+#elif defined(_M_ARM) || defined(_M_ARM64)
+//
+// MSFT ARM variable argument list support.
+//
+
+typedef char* VA_LIST;
+
+#define VA_START(Marker, Parameter) __va_start (&Marker, &Parameter, _INT_SIZE_OF (Parameter), __alignof(Parameter), &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)
+//
+// X64 only. Use MS ABI version of GCC built-in macros for variable argument lists.
+//
+///
+/// Both GCC and LLVM 3.8 for X64 support new variable argument intrinsics for Microsoft ABI
+///
+
+///
+/// Variable used to traverse the list of arguments. This type can vary by
+/// implementation and could be an array or structure.
+///
+typedef __builtin_ms_va_list VA_LIST;
+
+#define VA_START(Marker, Parameter) __builtin_ms_va_start (Marker, Parameter)
+
+#define VA_ARG(Marker, TYPE) ((sizeof (TYPE) < sizeof (UINTN)) ? (TYPE)(__builtin_va_arg (Marker, UINTN)) : (TYPE)(__builtin_va_arg (Marker, TYPE)))
+
+#define VA_END(Marker) __builtin_ms_va_end (Marker)
+
+#define VA_COPY(Dest, Start) __builtin_ms_va_copy (Dest, Start)
+
+#else
//
// Use GCC built-in macros for variable argument lists.
//
@@ -481,6 +723,8 @@ typedef __builtin_va_list VA_LIST;
#define VA_COPY(Dest, Start) __builtin_va_copy (Dest, Start)
+#endif
+
#else
///
/// Variable used to traverse the list of arguments. This type can vary by
@@ -541,7 +785,7 @@ typedef CHAR8 *VA_LIST;
This macro initializes Dest as a copy of Start, as if the VA_START macro had been applied to Dest
followed by the same sequence of uses of the VA_ARG macro as had previously been used to reach
- the present state of Start.
+ the present state of Start.
@param Dest VA_LIST used to traverse the list of arguments.
@param Start VA_LIST used to traverse the list of arguments.
@@ -625,7 +869,7 @@ typedef UINTN *BASE_LIST;
@return A pointer to the structure from one of it's elements.
**/
-#define BASE_CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - (CHAR8 *) &(((TYPE *) 0)->Field)))
+#define BASE_CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - OFFSET_OF (TYPE, Field)))
/**
Rounds a value up to the next boundary using a specified alignment.
@@ -924,6 +1168,11 @@ typedef UINTN RETURN_STATUS;
///
#define RETURN_COMPROMISED_DATA ENCODE_ERROR (33)
+///
+/// A HTTP error occurred during the network operation.
+///
+#define RETURN_HTTP_ERROR ENCODE_ERROR (35)
+
///
/// The string contained one or more characters that
/// the device could not render and were skipped.
@@ -953,6 +1202,12 @@ typedef UINTN RETURN_STATUS;
///
#define RETURN_WARN_STALE_DATA ENCODE_WARNING (5)
+///
+/// The resulting buffer contains UEFI-compliant file system.
+///
+#define RETURN_WARN_FILE_SYSTEM ENCODE_WARNING (6)
+
+
/**
Returns a 16-bit signature built from 2 ASCII characters.
@@ -1006,5 +1261,60 @@ typedef UINTN RETURN_STATUS;
#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))
+#if defined(_MSC_EXTENSIONS) && !defined (__INTEL_COMPILER) && !defined (MDE_CPU_EBC)
+ void * _ReturnAddress(void);
+ #pragma intrinsic(_ReturnAddress)
+ /**
+ Get the return address of the calling function.
+
+ Based on intrinsic function _ReturnAddress that provides the address of
+ the instruction in the calling function that will be executed after
+ control returns to the caller.
+
+ @param L Return Level.
+
+ @return The return address of the calling function or 0 if L != 0.
+
+ **/
+ #define RETURN_ADDRESS(L) ((L == 0) ? _ReturnAddress() : (VOID *) 0)
+#elif defined(__GNUC__)
+ void * __builtin_return_address (unsigned int level);
+ /**
+ Get the return address of the calling function.
+
+ Based on built-in Function __builtin_return_address that returns
+ the return address of the current function, or of one of its callers.
+
+ @param L Return Level.
+
+ @return The return address of the calling function.
+
+ **/
+ #define RETURN_ADDRESS(L) __builtin_return_address (L)
+#else
+ /**
+ Get the return address of the calling function.
+
+ @param L Return Level.
+
+ @return 0 as compilers don't support this feature.
+
+ **/
+ #define RETURN_ADDRESS(L) ((VOID *) 0)
+#endif
+
+/**
+ Return the number of elements in an array.
+
+ @param Array An object of array type. Array is only used as an argument to
+ the sizeof operator, therefore Array is never evaluated. The
+ caller is responsible for ensuring that Array's type is not
+ incomplete; that is, Array must have known constant size.
+
+ @return The number of elements in Array. The result has type UINTN.
+
+**/
+#define ARRAY_SIZE(Array) (sizeof (Array) / sizeof ((Array)[0]))
+
#endif