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-rw-r--r--MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c386
1 files changed, 193 insertions, 193 deletions
diff --git a/MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c b/MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c
index eeb16c3d29..0c6a12cca3 100644
--- a/MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c
+++ b/MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c
@@ -1,193 +1,193 @@
-/** @file
- GCC inline implementation of BaseSynchronizationLib processor specific functions.
-
- Copyright (c) 2006 - 2009, Intel Corporation<BR>
- Portions copyright (c) 2008-2009 Apple Inc.<BR>
- All rights reserved. This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-
-
-/**
- Performs an atomic increment of an 32-bit unsigned integer.
-
- Performs an atomic increment of the 32-bit unsigned integer specified by
- Value and returns the incremented value. The increment operation must be
- performed using MP safe mechanisms. The state of the return value is not
- guaranteed to be MP safe.
-
- @param Value A pointer to the 32-bit value to increment.
-
- @return The incremented value.
-
-**/
-UINT32
-EFIAPI
-InternalSyncIncrement (
- IN volatile UINT32 *Value
- )
-{
- UINT32 Result;
-
- __asm__ __volatile__ (
- "lock \n\t"
- "incl %2 \n\t"
- "movl %2, %%eax "
- : "=a" (Result), // %0
- "=m" (*Value) // %1
- : "m" (*Value) // %2
- : "memory",
- "cc"
- );
-
- return Result;
-
-}
-
-
-/**
- Performs an atomic decrement of an 32-bit unsigned integer.
-
- Performs an atomic decrement of the 32-bit unsigned integer specified by
- Value and returns the decremented value. The decrement operation must be
- performed using MP safe mechanisms. The state of the return value is not
- guaranteed to be MP safe.
-
- @param Value A pointer to the 32-bit value to decrement.
-
- @return The decremented value.
-
-**/
-UINT32
-EFIAPI
-InternalSyncDecrement (
- IN volatile UINT32 *Value
- )
-{
- UINT32 Result;
-
- __asm__ __volatile__ (
- "lock \n\t"
- "decl %2 \n\t"
- "movl %2, %%eax "
- : "=a" (Result), // %0
- "=m" (*Value) // %1
- : "m" (*Value) // %2
- : "memory",
- "cc"
- );
-
- return Result;
-}
-
-/**
- Performs an atomic compare exchange operation on a 32-bit unsigned integer.
-
- Performs an atomic compare exchange operation on the 32-bit unsigned integer
- specified by Value. If Value is equal to CompareValue, then Value is set to
- ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue,
- then Value is returned. The compare exchange operation must be performed using
- MP safe mechanisms.
-
-
- @param Value A pointer to the 32-bit value for the compare exchange
- operation.
- @param CompareValue 32-bit value used in compare operation.
- @param ExchangeValue 32-bit value used in exchange operation.
-
- @return The original *Value before exchange.
-
-**/
-UINT32
-EFIAPI
-InternalSyncCompareExchange32 (
- IN OUT volatile UINT32 *Value,
- IN UINT32 CompareValue,
- IN UINT32 ExchangeValue
- )
-{
-
-// GCC 4.1 and forward supports atomic builtins
-#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)))
-
- return __sync_val_compare_and_swap (Value, CompareValue, ExchangeValue);
-
-#else
-
- __asm__ __volatile__ (
- " \n\t"
- "lock \n\t"
- "cmpxchgl %1, %2 \n\t"
- : "=a" (CompareValue) // %0
- : "q" (ExchangeValue), // %1
- "m" (*Value),m // %2
- "0" (CompareValue) // %4
- : "memory",
- "cc"
- );
-
- return CompareValue;
-
-#endif
-}
-
-/**
- Performs an atomic compare exchange operation on a 64-bit unsigned integer.
-
- Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
- by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and
- CompareValue is returned. If Value is not equal to CompareValue, then Value is returned.
- The compare exchange operation must be performed using MP safe mechanisms.
-
-
- @param Value A pointer to the 64-bit value for the compare exchange
- operation.
- @param CompareValue 64-bit value used in compare operation.
- @param ExchangeValue 64-bit value used in exchange operation.
-
- @return The original *Value before exchange.
-
-**/
-UINT64
-EFIAPI
-InternalSyncCompareExchange64 (
- IN OUT volatile UINT64 *Value,
- IN UINT64 CompareValue,
- IN UINT64 ExchangeValue
- )
-{
-// GCC 4.1 and forward supports atomic builtins
-#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)))
-
- return __sync_val_compare_and_swap (Value, CompareValue, ExchangeValue);
-
-#else
-
- __asm__ __volatile__ (
- " \n\t"
- "push %%ebx \n\t"
- "movl %2,%%ebx \n\t"
- "lock \n\t"
- "cmpxchg8b (%1) \n\t"
- "pop %%ebx \n\t"
- : "+A" (CompareValue) // %0
- : "S" (Value), // %1
- "r" ((UINT32) ExchangeValue), // %2
- "c" ((UINT32) (ExchangeValue >> 32)) // %3
- : "memory",
- "cc"
- );
-
- return CompareValue;
-
-#endif
-}
-
-
+/** @file
+ GCC inline implementation of BaseSynchronizationLib processor specific functions.
+
+ Copyright (c) 2006 - 2009, Intel Corporation<BR>
+ Portions copyright (c) 2008-2009 Apple Inc.<BR>
+ All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+
+/**
+ Performs an atomic increment of an 32-bit unsigned integer.
+
+ Performs an atomic increment of the 32-bit unsigned integer specified by
+ Value and returns the incremented value. The increment operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ @param Value A pointer to the 32-bit value to increment.
+
+ @return The incremented value.
+
+**/
+UINT32
+EFIAPI
+InternalSyncIncrement (
+ IN volatile UINT32 *Value
+ )
+{
+ UINT32 Result;
+
+ __asm__ __volatile__ (
+ "lock \n\t"
+ "incl %2 \n\t"
+ "movl %2, %%eax "
+ : "=a" (Result), // %0
+ "=m" (*Value) // %1
+ : "m" (*Value) // %2
+ : "memory",
+ "cc"
+ );
+
+ return Result;
+
+}
+
+
+/**
+ Performs an atomic decrement of an 32-bit unsigned integer.
+
+ Performs an atomic decrement of the 32-bit unsigned integer specified by
+ Value and returns the decremented value. The decrement operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ @param Value A pointer to the 32-bit value to decrement.
+
+ @return The decremented value.
+
+**/
+UINT32
+EFIAPI
+InternalSyncDecrement (
+ IN volatile UINT32 *Value
+ )
+{
+ UINT32 Result;
+
+ __asm__ __volatile__ (
+ "lock \n\t"
+ "decl %2 \n\t"
+ "movl %2, %%eax "
+ : "=a" (Result), // %0
+ "=m" (*Value) // %1
+ : "m" (*Value) // %2
+ : "memory",
+ "cc"
+ );
+
+ return Result;
+}
+
+/**
+ Performs an atomic compare exchange operation on a 32-bit unsigned integer.
+
+ Performs an atomic compare exchange operation on the 32-bit unsigned integer
+ specified by Value. If Value is equal to CompareValue, then Value is set to
+ ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue,
+ then Value is returned. The compare exchange operation must be performed using
+ MP safe mechanisms.
+
+
+ @param Value A pointer to the 32-bit value for the compare exchange
+ operation.
+ @param CompareValue 32-bit value used in compare operation.
+ @param ExchangeValue 32-bit value used in exchange operation.
+
+ @return The original *Value before exchange.
+
+**/
+UINT32
+EFIAPI
+InternalSyncCompareExchange32 (
+ IN OUT volatile UINT32 *Value,
+ IN UINT32 CompareValue,
+ IN UINT32 ExchangeValue
+ )
+{
+
+// GCC 4.1 and forward supports atomic builtins
+#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)))
+
+ return __sync_val_compare_and_swap (Value, CompareValue, ExchangeValue);
+
+#else
+
+ __asm__ __volatile__ (
+ " \n\t"
+ "lock \n\t"
+ "cmpxchgl %1, %2 \n\t"
+ : "=a" (CompareValue) // %0
+ : "q" (ExchangeValue), // %1
+ "m" (*Value),m // %2
+ "0" (CompareValue) // %4
+ : "memory",
+ "cc"
+ );
+
+ return CompareValue;
+
+#endif
+}
+
+/**
+ Performs an atomic compare exchange operation on a 64-bit unsigned integer.
+
+ Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
+ by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and
+ CompareValue is returned. If Value is not equal to CompareValue, then Value is returned.
+ The compare exchange operation must be performed using MP safe mechanisms.
+
+
+ @param Value A pointer to the 64-bit value for the compare exchange
+ operation.
+ @param CompareValue 64-bit value used in compare operation.
+ @param ExchangeValue 64-bit value used in exchange operation.
+
+ @return The original *Value before exchange.
+
+**/
+UINT64
+EFIAPI
+InternalSyncCompareExchange64 (
+ IN OUT volatile UINT64 *Value,
+ IN UINT64 CompareValue,
+ IN UINT64 ExchangeValue
+ )
+{
+// GCC 4.1 and forward supports atomic builtins
+#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)))
+
+ return __sync_val_compare_and_swap (Value, CompareValue, ExchangeValue);
+
+#else
+
+ __asm__ __volatile__ (
+ " \n\t"
+ "push %%ebx \n\t"
+ "movl %2,%%ebx \n\t"
+ "lock \n\t"
+ "cmpxchg8b (%1) \n\t"
+ "pop %%ebx \n\t"
+ : "+A" (CompareValue) // %0
+ : "S" (Value), // %1
+ "r" ((UINT32) ExchangeValue), // %2
+ "c" ((UINT32) (ExchangeValue >> 32)) // %3
+ : "memory",
+ "cc"
+ );
+
+ return CompareValue;
+
+#endif
+}
+
+
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