]>
git.proxmox.com Git - mirror_edk2.git/blob - ArmPkg/Include/AsmMacroIoLib.h
2 Macros to work around lack of Apple support for LDR register, =expr
4 Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
5 Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 #ifndef __MACRO_IO_LIB_H__
19 #define __MACRO_IO_LIB_H__
21 #if defined(__APPLE__)
24 // ldr reg, =expr does not work with current Apple tool chain. So do the work our selves
27 // returns _Data in R0 and _Address in R1
28 #define MmioWrite32(_Address, _Data) \
37 // returns _Data in R0 and _Address in R1, and _OrData in r2
38 #define MmioOr32(_Address, _OrData) \
49 // returns _Data in R0 and _Address in R1, and _OrData in r2
50 #define MmioAnd32(_Address, _AndData) \
61 // returns result in R0, _Address in R1, and _OrData in r2
62 #define MmioAndThenOr32(_Address, _AndData, _OrData) \
76 // returns _Data in _Reg and _Address in R1
77 #define MmioWriteFromReg32(_Address, _Reg) \
85 // returns _Data in R0 and _Address in R1
86 #define MmioRead32(_Address) \
93 // returns _Data in Reg and _Address in R1
94 #define MmioReadToReg32(_Address, _Reg) \
102 // load R0 with _Data
103 #define LoadConstant(_Data) \
109 // load _Reg with _Data
110 #define LoadConstantToReg(_Data, _Reg) \
111 ldr _Reg, [pc, #0] ; \
116 // load _Reg with _Data if eq
117 #define LoadConstantToRegIfEq(_Data, _Reg) \
118 ldreq _Reg, [pc, #0] ; \
123 // Convert the (ClusterId,CoreId) into a Core Position
124 // We assume there are 4 cores per cluster
125 #define GetCorePositionInStack(Pos, MpId, Tmp) \
126 lsr Pos, MpId, #6 ; \
127 and Tmp, MpId, #3 ; \
130 // Reserve a region at the top of the Primary Core stack
131 // for Global variables for the XIP phase
132 #define SetPrimaryStack(StackTop, GlobalSize, Tmp) \
133 and Tmp, GlobalSize, #7 ; \
134 rsbne Tmp, Tmp, #8 ; \
135 add GlobalSize, GlobalSize, Tmp ; \
136 sub sp, StackTop, GlobalSize ; \
139 mov GlobalSize, #0x0 ; \
140 _SetPrimaryStackInitGlobals: ; \
141 cmp Tmp, StackTop ; \
142 beq _SetPrimaryStackEnd ; \
143 str GlobalSize, [Tmp], #4 ; \
144 b _SetPrimaryStackInitGlobals ; \
148 #elif defined (__GNUC__)
150 #define MmioWrite32(Address, Data) \
155 #define MmioOr32(Address, OrData) \
162 #define MmioAnd32(Address, AndData) \
169 #define MmioAndThenOr32(Address, AndData, OrData) \
178 #define MmioWriteFromReg32(Address, Reg) \
182 #define MmioRead32(Address) \
186 #define MmioReadToReg32(Address, Reg) \
190 #define LoadConstant(Data) \
193 #define LoadConstantToReg(Data, Reg) \
196 #define GetCorePositionInStack(Pos, MpId, Tmp) \
197 lsr Pos, MpId, #6 ; \
198 and Tmp, MpId, #3 ; \
201 #define SetPrimaryStack(StackTop, GlobalSize, Tmp) \
202 and Tmp, GlobalSize, #7 ; \
203 rsbne Tmp, Tmp, #8 ; \
204 add GlobalSize, GlobalSize, Tmp ; \
205 sub sp, StackTop, GlobalSize ; \
208 mov GlobalSize, #0x0 ; \
209 _SetPrimaryStackInitGlobals: ; \
210 cmp Tmp, StackTop ; \
211 beq _SetPrimaryStackEnd ; \
212 str GlobalSize, [Tmp], #4 ; \
213 b _SetPrimaryStackInitGlobals ; \
219 // Use ARM assembly macros, form armasam
221 // Less magic in the macros if ldr reg, =expr works
224 // returns _Data in R0 and _Address in R1
228 #define MmioWrite32(Address, Data) MmioWrite32Macro Address, Data
233 // returns Data in R0 and Address in R1, and OrData in r2
234 #define MmioOr32(Address, OrData) MmioOr32Macro Address, OrData
237 // returns _Data in R0 and _Address in R1, and _OrData in r2
240 #define MmioAnd32(Address, AndData) MmioAnd32Macro Address, AndData
242 // returns result in R0, _Address in R1, and _OrData in r2
245 #define MmioAndThenOr32(Address, AndData, OrData) MmioAndThenOr32Macro Address, AndData, OrData
248 // returns _Data in _Reg and _Address in R1
251 #define MmioWriteFromReg32(Address, Reg) MmioWriteFromReg32Macro Address, Reg
253 // returns _Data in R0 and _Address in R1
256 #define MmioRead32(Address) MmioRead32Macro Address
258 // returns _Data in Reg and _Address in R1
261 #define MmioReadToReg32(Address, Reg) MmioReadToReg32Macro Address, Reg
264 // load R0 with _Data
267 #define LoadConstant(Data) LoadConstantMacro Data
269 // load _Reg with _Data
272 #define LoadConstantToReg(Data, Reg) LoadConstantToRegMacro Data, Reg
274 // conditional load testing eq flag
275 #define LoadConstantToRegIfEq(Data, Reg) LoadConstantToRegIfEqMacro Data, Reg
277 #define GetCorePositionInStack(Pos, MpId, Tmp) GetCorePositionInStack Pos, MpId, Tmp
279 #define SetPrimaryStack(StackTop,GlobalSize,Tmp) SetPrimaryStack StackTop, GlobalSize, Tmp