diff options
Diffstat (limited to 'MdePkg/Library')
| -rw-r--r-- | MdePkg/Library/BaseLib/Arm/GccInline.c | 76 | ||||
| -rw-r--r-- | MdePkg/Library/BaseLib/Arm/SwitchStack.S | 68 | ||||
| -rw-r--r-- | MdePkg/Library/BaseLib/BaseLib.inf | 2 |
3 files changed, 69 insertions, 77 deletions
diff --git a/MdePkg/Library/BaseLib/Arm/GccInline.c b/MdePkg/Library/BaseLib/Arm/GccInline.c deleted file mode 100644 index 0c6b016042..0000000000 --- a/MdePkg/Library/BaseLib/Arm/GccInline.c +++ /dev/null @@ -1,76 +0,0 @@ -/** @file
- GCC inline implementation of BaseLib processor specific functions.
-
- Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
- Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- 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.
-
-**/
-
-#include "BaseLibInternals.h"
-
-/**
- Requests CPU to pause for a short period of time.
-
- Requests CPU to pause for a short period of time. Typically used in MP
- systems to prevent memory starvation while waiting for a spin lock.
-
-**/
-VOID
-EFIAPI
-CpuPause (
- VOID
- )
-{
- __asm__ __volatile__ (
- "nop\n\t"
- "nop\n\t"
- "nop\n\t"
- "nop\n\t"
- "nop\n\t"
- );
-}
-
-/**
- Transfers control to a function starting with a new stack.
-
- This internal worker function transfers control to the function
- specified by EntryPoint using the new stack specified by NewStack
- and passing in the parameters specified by Context1 and Context2.
- Context1 and Context2 are optional and may be NULL.
- The function EntryPoint must never return.
-
- @param EntryPoint The pointer to the function to enter.
- @param Context1 The first parameter to pass in.
- @param Context2 The second Parameter to pass in
- @param NewStack The new Location of the stack
-
-**/
-VOID
-EFIAPI
-InternalSwitchStackAsm (
- SWITCH_STACK_ENTRY_POINT EntryPoint,
- VOID *Context1,
- VOID *Context2,
- VOID *NewStack
- )
-{
- __asm__ __volatile__ (
- "mov lr, %0\n\t"
- "mov sp, %3\n\t"
- "mov %r0, %1\n\t"
- "mov %r1, %2\n\t"
- "bx lr\n\t"
- : /* no output operand */
- : "r" (EntryPoint),
- "r" (Context1),
- "r" (Context2),
- "r" (NewStack)
- );
-}
diff --git a/MdePkg/Library/BaseLib/Arm/SwitchStack.S b/MdePkg/Library/BaseLib/Arm/SwitchStack.S new file mode 100644 index 0000000000..413de99ba5 --- /dev/null +++ b/MdePkg/Library/BaseLib/Arm/SwitchStack.S @@ -0,0 +1,68 @@ +//------------------------------------------------------------------------------
+//
+// Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+// Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+// Portions copyright (c) 2011, ARM Limited. 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.
+//
+//------------------------------------------------------------------------------
+
+.text
+.align 5
+
+GCC_ASM_EXPORT(InternalSwitchStackAsm)
+GCC_ASM_EXPORT(CpuPause)
+
+/**
+//
+// This allows the caller to switch the stack and goes to the new entry point
+//
+// @param EntryPoint The pointer to the location to enter
+// @param Context Parameter to pass in
+// @param Context2 Parameter2 to pass in
+// @param NewStack New Location of the stack
+//
+// @return Nothing. Goes to the Entry Point passing in the new parameters
+//
+VOID
+EFIAPI
+InternalSwitchStackAsm (
+ SWITCH_STACK_ENTRY_POINT EntryPoint,
+ VOID *Context,
+ VOID *Context2,
+ VOID *NewStack
+ );
+**/
+ASM_PFX(InternalSwitchStackAsm):
+ MOV LR, R0
+ MOV SP, R3
+ MOV R0, R1
+ MOV R1, R2
+ BX LR
+
+/**
+//
+// Requests CPU to pause for a short period of time.
+//
+// Requests CPU to pause for a short period of time. Typically used in MP
+// systems to prevent memory starvation while waiting for a spin lock.
+//
+VOID
+EFIAPI
+CpuPause (
+ VOID
+ )
+**/
+ASM_PFX(CpuPause):
+ nop
+ nop
+ nop
+ nop
+ nop
+ BX LR
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index 19d546546e..f54c3bc32b 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -469,7 +469,7 @@ Arm/CpuBreakpoint.asm | RVCT
Arm/Math64.S | GCC
- Arm/GccInline.c | GCC
+ Arm/SwitchStack.S | GCC
Arm/EnableInterrupts.S | GCC
Arm/DisableInterrupts.S | GCC
Arm/GetInterruptsState.S | GCC
|