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-/** @file
- Macros to work around lack of Apple support for LDR register, =expr
-
- Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- Copyright (c) 2011-2012, 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_LIB_H__
-#define __MACRO_IO_LIB_H__
-
-#if defined(__APPLE__)
-
-//
-// ldr reg, =expr does not work with current Apple tool chain. So do the work our selves
-//
-
-// returns _Data in R0 and _Address in R1
-#define MmioWrite32(_Address, _Data) \
- ldr r1, [pc, #8] ; \
- ldr r0, [pc, #8] ; \
- str r0, [r1] ; \
- b 1f ; \
- .long (_Address) ; \
- .long (_Data) ; \
-1:
-
-// returns _Data in R0 and _Address in R1, and _OrData in r2
-#define MmioOr32(_Address, _OrData) \
- ldr r1, [pc, #16] ; \
- ldr r2, [pc, #16] ; \
- ldr r0, [r1] ; \
- orr r0, r0, r2 ; \
- str r0, [r1] ; \
- b 1f ; \
- .long (_Address) ; \
- .long (_OrData) ; \
-1:
-
-// returns _Data in R0 and _Address in R1, and _OrData in r2
-#define MmioAnd32(_Address, _AndData) \
- ldr r1, [pc, #16] ; \
- ldr r2, [pc, #16] ; \
- ldr r0, [r1] ; \
- and r0, r0, r2 ; \
- str r0, [r1] ; \
- b 1f ; \
- .long (_Address) ; \
- .long (_AndData) ; \
-1:
-
-// returns result in R0, _Address in R1, and _OrData in r2
-#define MmioAndThenOr32(_Address, _AndData, _OrData) \
- ldr r1, [pc, #24] ; \
- ldr r0, [r1] ; \
- ldr r2, [pc, #20] ; \
- and r0, r0, r2 ; \
- ldr r2, [pc, #16] ; \
- orr r0, r0, r2 ; \
- str r0, [r1] ; \
- b 1f ; \
- .long (_Address) ; \
- .long (_AndData) ; \
- .long (_OrData) ; \
-1:
-
-// returns _Data in _Reg and _Address in R1
-#define MmioWriteFromReg32(_Address, _Reg) \
- ldr r1, [pc, #4] ; \
- str _Reg, [r1] ; \
- b 1f ; \
- .long (_Address) ; \
-1:
-
-
-// returns _Data in R0 and _Address in R1
-#define MmioRead32(_Address) \
- ldr r1, [pc, #4] ; \
- ldr r0, [r1] ; \
- b 1f ; \
- .long (_Address) ; \
-1:
-
-// returns _Data in Reg and _Address in R1
-#define MmioReadToReg32(_Address, _Reg) \
- ldr r1, [pc, #4] ; \
- ldr _Reg, [r1] ; \
- b 1f ; \
- .long (_Address) ; \
-1:
-
-
-// load R0 with _Data
-#define LoadConstant(_Data) \
- ldr r0, [pc, #0] ; \
- b 1f ; \
- .long (_Data) ; \
-1:
-
-// load _Reg with _Data
-#define LoadConstantToReg(_Data, _Reg) \
- ldr _Reg, [pc, #0] ; \
- b 1f ; \
- .long (_Data) ; \
-1:
-
-// load _Reg with _Data if eq
-#define LoadConstantToRegIfEq(_Data, _Reg) \
- ldreq _Reg, [pc, #0] ; \
- b 1f ; \
- .long (_Data) ; \
-1:
-
-// Reserve a region at the top of the Primary Core stack
-// for Global variables for the XIP phase
-#define SetPrimaryStack(StackTop, GlobalSize, Tmp) \
- and Tmp, GlobalSize, #7 ; \
- rsbne Tmp, Tmp, #8 ; \
- add GlobalSize, GlobalSize, Tmp ; \
- sub sp, StackTop, GlobalSize ; \
- ; \
- mov Tmp, sp ; \
- mov GlobalSize, #0x0 ; \
-_SetPrimaryStackInitGlobals: ; \
- cmp Tmp, StackTop ; \
- beq _SetPrimaryStackEnd ; \
- str GlobalSize, [Tmp], #4 ; \
- b _SetPrimaryStackInitGlobals ; \
-_SetPrimaryStackEnd:
-
-// Initialize the Global Variable with '0'
-#define InitializePrimaryStack(GlobalSize, Tmp1) \
- and Tmp1, GlobalSize, #7 ; \
- rsbne Tmp1, Tmp1, #8 ; \
- add GlobalSize, GlobalSize, Tmp1 ; \
- ; \
- mov Tmp1, sp ; \
- sub sp, GlobalSize ; \
- mov GlobalSize, #0x0 ; \
-_InitializePrimaryStackLoop: ; \
- cmp Tmp1, sp ; \
- bls _InitializePrimaryStackEnd ; \
- str GlobalSize, [Tmp1, #-4]! ; \
- b _InitializePrimaryStackLoop ; \
-_InitializePrimaryStackEnd:
-
-#elif defined (__GNUC__)
-
-#define MmioWrite32(Address, Data) \
- ldr r1, =Address ; \
- ldr r0, =Data ; \
- str r0, [r1]
-
-#define MmioOr32(Address, OrData) \
- ldr r1, =Address ; \
- ldr r2, =OrData ; \
- ldr r0, [r1] ; \
- orr r0, r0, r2 ; \
- str r0, [r1]
-
-#define MmioAnd32(Address, AndData) \
- ldr r1, =Address ; \
- ldr r2, =AndData ; \
- ldr r0, [r1] ; \
- and r0, r0, r2 ; \
- str r0, [r1]
-
-#define MmioAndThenOr32(Address, AndData, OrData) \
- ldr r1, =Address ; \
- ldr r0, [r1] ; \
- ldr r2, =AndData ; \
- and r0, r0, r2 ; \
- ldr r2, =OrData ; \
- orr r0, r0, r2 ; \
- str r0, [r1]
-
-#define MmioWriteFromReg32(Address, Reg) \
- ldr r1, =Address ; \
- str Reg, [r1]
-
-#define MmioRead32(Address) \
- ldr r1, =Address ; \
- ldr r0, [r1]
-
-#define MmioReadToReg32(Address, Reg) \
- ldr r1, =Address ; \
- ldr Reg, [r1]
-
-#define LoadConstant(Data) \
- ldr r0, =Data
-
-#define LoadConstantToReg(Data, Reg) \
- ldr Reg, =Data
-
-#define SetPrimaryStack(StackTop, GlobalSize, Tmp) \
- and Tmp, GlobalSize, #7 ; \
- rsbne Tmp, Tmp, #8 ; \
- add GlobalSize, GlobalSize, Tmp ; \
- sub sp, StackTop, GlobalSize ; \
- ; \
- mov Tmp, sp ; \
- mov GlobalSize, #0x0 ; \
-_SetPrimaryStackInitGlobals: ; \
- cmp Tmp, StackTop ; \
- beq _SetPrimaryStackEnd ; \
- str GlobalSize, [Tmp], #4 ; \
- b _SetPrimaryStackInitGlobals ; \
-_SetPrimaryStackEnd:
-
-// Initialize the Global Variable with '0'
-#define InitializePrimaryStack(GlobalSize, Tmp1) \
- and Tmp1, GlobalSize, #7 ; \
- rsbne Tmp1, Tmp1, #8 ; \
- add GlobalSize, GlobalSize, Tmp1 ; \
- ; \
- mov Tmp1, sp ; \
- sub sp, GlobalSize ; \
- mov GlobalSize, #0x0 ; \
-_InitializePrimaryStackLoop: ; \
- cmp Tmp1, sp ; \
- bls _InitializePrimaryStackEnd ; \
- str GlobalSize, [Tmp1, #-4]! ; \
- b _InitializePrimaryStackLoop ; \
-_InitializePrimaryStackEnd:
-
-#else
-
-//
-// Use ARM assembly macros, form armasam
-//
-// Less magic in the macros if ldr reg, =expr works
-//
-
-// returns _Data in R0 and _Address in R1
-
-
-
-#define MmioWrite32(Address, Data) MmioWrite32Macro Address, Data
-
-
-
-
-// returns Data in R0 and Address in R1, and OrData in r2
-#define MmioOr32(Address, OrData) MmioOr32Macro Address, OrData
-
-
-// returns _Data in R0 and _Address in R1, and _OrData in r2
-
-
-#define MmioAnd32(Address, AndData) MmioAnd32Macro Address, AndData
-
-// returns result in R0, _Address in R1, and _OrData in r2
-
-
-#define MmioAndThenOr32(Address, AndData, OrData) MmioAndThenOr32Macro Address, AndData, OrData
-
-
-// returns _Data in _Reg and _Address in R1
-
-
-#define MmioWriteFromReg32(Address, Reg) MmioWriteFromReg32Macro Address, Reg
-
-// returns _Data in R0 and _Address in R1
-
-
-#define MmioRead32(Address) MmioRead32Macro Address
-
-// returns _Data in Reg and _Address in R1
-
-
-#define MmioReadToReg32(Address, Reg) MmioReadToReg32Macro Address, Reg
-
-
-// load R0 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) SetPrimaryStack StackTop, GlobalSize, Tmp
-
-// Initialize the Global Variable with '0'
-#define InitializePrimaryStack(GlobalSize, Tmp1) InitializePrimaryStack GlobalSize, Tmp1
-
-#endif
-
-#endif
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