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32a52af0e8
NULLジャンプ時のデータアボート対応。 SWIハンドラアドレス格納。 git-svn-id: file:///Volumes/Transfer/gigaleak_20231201/2020-09-30%20-%20paladin.7z/paladin/ctr_firmware@78 b871894f-2f95-9b40-918c-086798483c85
101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
/*---------------------------------------------------------------------------*
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Project: CtrBrom - library - init
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File: crt0.c
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Copyright 2008 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/code32.h>
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#include <brom/os.h>
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void _start(void);
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/*---------------------------------------------------------------------------*
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Name: _start
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Description: Start up
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Arguments: None
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Returns: None.
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*---------------------------------------------------------------------------*/
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asm void _start( void )
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{
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PRESERVE8
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CODE32 // for _start reference
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INASM_EXTERN( STUPi_IrqVeneer )
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INASM_EXTERN( STUPi_FiqVeneer )
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INASM_EXTERN( STUPi_SwiVeneer )
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INASM_EXTERN( STUPi_UndefInstVeneer )
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INASM_EXTERN( STUPi_PrefetchAbortVeneer )
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INASM_EXTERN( STUPi_DataAbortVeneer )
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b stupStartHandlerVeneer // don't change for NULL access compatibility
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undef b STUPi_UndefInstVeneer
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swi b STUPi_SwiVeneer
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iabt b STUPi_PrefetchAbortVeneer
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dabt b STUPi_DataAbortVeneer
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reserve b reserve
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irq b STUPi_IrqVeneer
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fiq b STUPi_FiqVeneer
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INASM_EXTERN( STUPi_SwiHandler )
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DCD STUPi_SwiHandler
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stupStartHandlerVeneer
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// NULLジャンプ時のデータアボート有効時はここで発生
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mov r12, #0
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ldr r12, [r12]
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//---- check CPU ID
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mrc p15,0, r0, c0, c0, 5
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tst r0, #HW_C0_AP_CPU_ID_MASK
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beq core0_start
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//---- Wait for IPI
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#ifdef BROM_USE_MPCORE_EXTEND_OP
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cpsid i
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#else
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mrs r0, cpsr
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orr r1, r0, #HW_PSR_IRQ_DISABLE
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msr cpsr_c, r1
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#endif
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ldr r3, =REG_IDR_CNT_ADDR
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mov r0, #REG_OS_IDR_CNT_E_MASK
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str r0, [r3]
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ldr r3, =REG_IDR_CLR_PND0_ADDR
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ldr r1, =REG_OS_IDR_CLR_PND0_IPI_ALL_MASK
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mov r0, #~0
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str r0, [r3]
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LSYM(10)
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ldr r0, [r3]
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tst r0, r1
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wfieq
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nop
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beq BSYM(10)
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ldr lr, =HW_START_VECTOR1_PTR
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bx lr
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core0_start
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INASM_EXTERN( STUPi_StartHandler )
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b STUPi_StartHandler
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LTORG
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}
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