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| author | Harry Liebel <Harry.Liebel@arm.com> | 2013-07-18 18:07:46 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-07-18 18:07:46 +0000 |
| commit | 25402f5d0660acde3ee382a36b065945251990dc (patch) | |
| tree | 293fd0d8b229479d4d7cd540e034a10e08c18058 /ArmPkg/Include/AsmMacroIoLibV8.h | |
| parent | 8477cb6e159008d1703381b9f6159e8c90ccc2bf (diff) | |
| download | edk2-platforms-25402f5d0660acde3ee382a36b065945251990dc.tar.xz | |
ArmPkg: Added Aarch64 support
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Harry Liebel <Harry.Liebel@arm.com>
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14486 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Include/AsmMacroIoLibV8.h')
| -rw-r--r-- | ArmPkg/Include/AsmMacroIoLibV8.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/ArmPkg/Include/AsmMacroIoLibV8.h b/ArmPkg/Include/AsmMacroIoLibV8.h new file mode 100644 index 0000000000..933ef7043b --- /dev/null +++ b/ArmPkg/Include/AsmMacroIoLibV8.h @@ -0,0 +1,200 @@ +/** @file
+ Macros to work around lack of Apple support for LDR register, =expr
+
+ Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+ Portions copyright (c) 2011 - 2013, ARM Ltd. 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.
+
+**/
+
+
+#ifndef __MACRO_IO_LIBV8_H__
+#define __MACRO_IO_LIBV8_H__
+
+#if defined (__GNUC__)
+
+#define MmioWrite32(Address, Data) \
+ ldr x1, =Address ; \
+ ldr x0, =Data ; \
+ str x0, [x1]
+
+#define MmioOr32(Address, OrData) \
+ ldr x1, =Address ; \
+ ldr x2, =OrData ; \
+ ldr x0, [x1] ; \
+ orr x0, x0, x2 ; \
+ str x0, [x1]
+
+#define MmioAnd32(Address, AndData) \
+ ldr x1, =Address ; \
+ ldr x2, =AndData ; \
+ ldr x0, [x1] ; \
+ and x0, x0, x2 ; \
+ str x0, [x1]
+
+#define MmioAndThenOr32(Address, AndData, OrData) \
+ ldr x1, =Address ; \
+ ldr x0, [x1] ; \
+ ldr x2, =AndData ; \
+ and x0, x0, x2 ; \
+ ldr x2, =OrData ; \
+ orr x0, x0, x2 ; \
+ str x0, [x1]
+
+#define MmioWriteFromReg32(Address, Reg) \
+ ldr x1, =Address ; \
+ str Reg, [x1]
+
+#define MmioRead32(Address) \
+ ldr x1, =Address ; \
+ ldr x0, [x1]
+
+#define MmioReadToReg32(Address, Reg) \
+ ldr x1, =Address ; \
+ ldr Reg, [x1]
+
+#define LoadConstant(Data) \
+ ldr x0, =Data
+
+#define LoadConstantToReg(Data, Reg) \
+ ldr Reg, =Data
+
+#define SetPrimaryStack(StackTop, GlobalSize, Tmp, Tmp1) \
+ ands Tmp, GlobalSize, #15 ; \
+ mov Tmp1, #16 ; \
+ sub Tmp1, Tmp1, Tmp ; \
+ csel Tmp, Tmp1, Tmp, ne ; \
+ add GlobalSize, GlobalSize, Tmp ; \
+ sub sp, StackTop, GlobalSize ; \
+ ; \
+ mov Tmp, sp ; \
+ mov GlobalSize, #0x0 ; \
+_SetPrimaryStackInitGlobals: ; \
+ cmp Tmp, StackTop ; \
+ b.eq _SetPrimaryStackEnd ; \
+ str GlobalSize, [Tmp], #8 ; \
+ b _SetPrimaryStackInitGlobals ; \
+_SetPrimaryStackEnd:
+
+// Initialize the Global Variable with '0'
+#define InitializePrimaryStack(GlobalSize, Tmp1, Tmp2) \
+ and Tmp1, GlobalSize, #15 ; \
+ mov Tmp2, #16 ; \
+ sub Tmp2, Tmp2, Tmp1 ; \
+ add GlobalSize, GlobalSize, Tmp2 ; \
+ ; \
+ mov Tmp1, sp ; \
+ sub sp, sp, GlobalSize ; \
+ mov GlobalSize, #0x0 ; \
+_InitializePrimaryStackLoop: ; \
+ mov Tmp2, sp ; \
+ cmp Tmp1, Tmp2 ; \
+ bls _InitializePrimaryStackEnd ; \
+ str GlobalSize, [Tmp1, #-8]! ; \
+ b _InitializePrimaryStackLoop ; \
+_InitializePrimaryStackEnd:
+
+// CurrentEL : 0xC = EL3; 8 = EL2; 4 = EL1
+// This only selects between EL1 and EL2, else we die.
+// Provide the Macro with a safe temp xreg to use.
+#define EL1_OR_EL2(SAFE_XREG) \
+ mrs SAFE_XREG, CurrentEL ;\
+ cmp SAFE_XREG, #0x4 ;\
+ b.eq 1f ;\
+ cmp SAFE_XREG, #0x8 ;\
+ b.eq 2f ;\
+ b dead ;// We should never get here.
+
+// CurrentEL : 0xC = EL3; 8 = EL2; 4 = EL1
+// This only selects between EL1 and EL2 and EL3, else we die.
+// Provide the Macro with a safe temp xreg to use.
+#define EL1_OR_EL2_OR_EL3(SAFE_XREG) \
+ mrs SAFE_XREG, CurrentEL ;\
+ cmp SAFE_XREG, #0x4 ;\
+ b.eq 1f ;\
+ cmp SAFE_XREG, #0x8 ;\
+ b.eq 2f ;\
+ cmp SAFE_XREG, #0xC ;\
+ b.eq 3f ;\
+ b dead ;// We should never get here.
+
+#else
+
+//
+// Use ARM assembly macros, form armasm
+//
+// Less magic in the macros if ldr reg, =expr works
+//
+
+// returns _Data in X0 and _Address in X1
+
+
+
+#define MmioWrite32(Address, Data) MmioWrite32Macro Address, Data
+
+
+
+
+// returns Data in X0 and Address in X1, and OrData in X2
+#define MmioOr32(Address, OrData) MmioOr32Macro Address, OrData
+
+
+// returns _Data in X0 and _Address in X1, and _OrData in X2
+
+
+#define MmioAnd32(Address, AndData) MmioAnd32Macro Address, AndData
+
+// returns result in X0, _Address in X1, and _OrData in X2
+
+
+#define MmioAndThenOr32(Address, AndData, OrData) MmioAndThenOr32Macro Address, AndData, OrData
+
+
+// returns _Data in _Reg and _Address in X1
+
+
+#define MmioWriteFromReg32(Address, Reg) MmioWriteFromReg32Macro Address, Reg
+
+// returns _Data in X0 and _Address in X1
+
+
+#define MmioRead32(Address) MmioRead32Macro Address
+
+// returns _Data in Reg and _Address in X1
+
+
+#define MmioReadToReg32(Address, Reg) MmioReadToReg32Macro Address, Reg
+
+
+// load X0 with _Data
+
+
+#define LoadConstant(Data) LoadConstantMacro Data
+
+// load _Reg with _Data
+
+
+#define LoadConstantToReg(Data, Reg) LoadConstantToRegMacro Data, Reg
+
+// conditional load testing eq flag
+#define LoadConstantToRegIfEq(Data, Reg) LoadConstantToRegIfEqMacro Data, Reg
+
+#define SetPrimaryStack(StackTop,GlobalSize,Tmp, Tmp1) SetPrimaryStack StackTop, GlobalSize, Tmp, Tmp1
+
+#define InitializePrimaryStack(GlobalSize, Tmp1, Tmp2) InitializePrimaryStack GlobalSize, Tmp1, Tmp2
+
+#define EL1_OR_EL2(SAFE_XREG) EL1_OR_EL2 SAFE_XREG
+
+#define EL1_OR_EL2_OR_EL3(SAFE_XREG) EL1_OR_EL2_OR_EL3 SAFE_XREG
+
+#endif
+
+#endif // __MACRO_IO_LIBV8_H__
+
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