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git-svn-id: file:///Volumes/Transfer/gigaleak_20231201/2020-09-30%20-%20paladin.7z/paladin/ctr_firmware@296 b871894f-2f95-9b40-918c-086798483c85
215 lines
6.7 KiB
C
215 lines
6.7 KiB
C
/*---------------------------------------------------------------------------*
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Project: CtrBrom - MI
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File: mi_exclusive.c
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Copyright 2009 Nintendo. All rights reserved.
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These coded instructions, statements, and computer programs contain
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proprietary information of Nintendo of America Inc. and/or Nintendo
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Company Ltd., and are protected by Federal copyright law. They may
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not be disclosed to third parties or copied or duplicated in any form,
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in whole or in part, without the prior written consent of Nintendo.
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$Date:: $
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$Rev$
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$Author$
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*---------------------------------------------------------------------------*/
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#include <brom/mi/exclusive.h>
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// miSwap* will be used for control common resource exclusively among processers
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// or modules. Beside, it's used for realization spin lock system.
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//
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// notice: you cannot access main memory by byte unless via cache.
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// so, use miSwapByte generally for accessing main memory ,not miSwapWord.
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//---- This code will be compiled in ARM-Mode
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#include <brom/code32.h>
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/*---------------------------------------------------------------------------*
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Name: miSwapByte
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Description: swap data and memory
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Arguments: setData data to swap
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destp memory address to swap
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Returns: swapped memory data
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*---------------------------------------------------------------------------*/
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asm u8 miSwapByte( u8 setData, u8* destp )
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{
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swpb r0, r0, [r1]
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miSwapWord
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Description: swap data and memory
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Arguments: setData data to swap
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destp memory address to swap
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Returns: swapped memory data
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*---------------------------------------------------------------------------*/
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asm u32 miSwapWord( u32 setData, u32* destp )
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{
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swp r0, r0, [r1]
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bx lr
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}
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#ifdef SDK_ARM11
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/*---------------------------------------------------------------------------*
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Name: miLoadExclusiveByte
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Description: load exclusive data and memory
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Arguments: destp memory address to load exclusive
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Returns: loaded memory data
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*---------------------------------------------------------------------------*/
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asm u8 miLoadExclusiveByte( u8* destp )
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{
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ldrexb r0, [r0]
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miLoadExclusiveHalfWord
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Description: load exclusive data and memory
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Arguments: destp memory address to load exclusive
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Returns: loaded memory data
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*---------------------------------------------------------------------------*/
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asm u16 miLoadExclusiveHalfWord( u16* destp )
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{
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ldrexh r0, [r0]
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miLoadExclusiveWord
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Description: load exclusive data and memory
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Arguments: destp memory address to load exclusive
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Returns: loaded memory data
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*---------------------------------------------------------------------------*/
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asm u32 miLoadExclusiveWord( u32* destp )
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{
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ldrex r0, [r0]
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miLoadExclusiveDoubleWord
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Description: load exclusive data and memory
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Arguments: destp memory address to load exclusive
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Returns: loaded memory data
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*---------------------------------------------------------------------------*/
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asm u64 miLoadExclusiveDoubleWord( u64* destp )
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{
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ldrexd r0, [r0]
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miStoreExclusiveByte
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Description: store exclusive data and memory
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Arguments: setData data to store exclusive
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destp memory address to store exclusive
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Returns: MI_STREX_SUCCESS success
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MI_STREX_ERROR error of store exclusive
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*---------------------------------------------------------------------------*/
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asm MIStrExErr miStoreExclusiveByte( u8 setData, u8* destp )
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{
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strexb r2, r0, [r1]
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mov r0, r2
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miStoreExclusiveHalfWord
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Description: store exclusive data and memory
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Arguments: setData data to store exclusive
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destp memory address to store exclusive
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Returns: MI_STREX_SUCCESS success
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MI_STREX_ERROR error of store exclusive
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*---------------------------------------------------------------------------*/
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asm MIStrExErr miStoreExclusiveHalfWord( u16 setData, u16* destp )
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{
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strexh r2, r0, [r1]
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mov r0, r2
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miStoreExclusiveWord
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Description: store exclusive data and memory
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Arguments: setData data to store exclusive
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destp memory address to store exclusive
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Returns: MI_STREX_SUCCESS success
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MI_STREX_ERROR error of store exclusive
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*---------------------------------------------------------------------------*/
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asm MIStrExErr miStoreExclusiveWord( u32 setData, u32* destp )
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{
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strex r2, r0, [r1]
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mov r0, r2
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miStoreExclusiveDoubleWord
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Description: store exclusive data and memory
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Arguments: setData data to store exclusive
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destp memory address to store exclusive
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Returns: MI_STREX_SUCCESS success
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MI_STREX_ERROR error of store exclusive
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*---------------------------------------------------------------------------*/
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asm MIStrExErr miStoreExclusiveDoubleWord( u64 setData, u64* destp )
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{
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strexd r3, r0, [r2]
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mov r0, r3
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bx lr
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}
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/*---------------------------------------------------------------------------*
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Name: miClearExclusiveAccess
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Description: clear exclusive access
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Arguments: None.
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Returns: None.
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*---------------------------------------------------------------------------*/
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asm void miClearExclusiveAccess( void )
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{
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clrex
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bx lr
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}
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#endif // SDK_ARM11
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//---- end limitation of ARM-Mode
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#include <brom/codereset.h>
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