/*---------------------------------------------------------------------------*
  Project:  Horizon
  File:     crt0.cpp

  Copyright (C)2009 Nintendo Co., Ltd.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Rev: 25011 $
 *---------------------------------------------------------------------------*/

#include <nn/types.h>
#include <nn/os/os_MemoryMapSelect.h>
#include <nn/init/init_StartUp.h>
#include <rt_sys.h>
#include <rt_locale.h>
#include <nn/os/os_SharedInfo.h>
#include <nn/svc.h>
#include <nn/assert.h>
#include <nn/version.h>
#include <nn/middleware.h>

namespace
{
#if defined(NN_BUILD_NOOPT) || defined(NN_BUILD_VERBOSE)
    NN_DEFINE_MIDDLEWARE(s_DebugIndicator, "NINTENDO", "DEBUG");
#endif
}


extern "C" void     nninitLocale();
extern "C" void     nninitRegion();
extern "C" void     nninitCheckVersion();

extern "C" NN_WEAK_SYMBOL void __cpp_initialize__aeabi_(void);
extern "C" bit32*   __rt_locale(void);
extern "C" void     _fp_init(void);

extern "C" bit8     Image$$ZI$$ZI$$Base[];
extern "C" bit8     Image$$ZI$$ZI$$Limit[];

#include <nn/hw/ARM/code32.h>
extern "C" asm void __ctr_start( void )
{
        PRESERVE8

        // ZI領域の初期化
        bl              __cpp(nninitRegion)
        bl              __cpp(_fp_init)
        bl              __cpp(nninitLocale)

        // 初期化
        bl              __cpp(nninitCheckVersion)
        blx             __cpp(nninitSystem)
        blx             __cpp(nninitStartUp)
        
        // C++ のスタティックイニシャライザを呼ぶ
        blx             __cpp(__cpp_initialize__aeabi_)
        // C のスタティックイニシャライザを呼ぶ
        blx             __cpp(nninitCallStaticInitializers)

        // ライブラリのセットアップ
        blx             __cpp(nninitSetup)

        //---- start (to 16bit code)
        blx             __cpp(nnMain)

terminate
        b               __cpp(nn::svc::ExitProcess)
}
#include <nn/hw/ARM/codereset.h>



extern "C" void nninitLocale()
{
#if defined(NN_BUILD_NOOPT) || defined(NN_BUILD_VERBOSE)
    NN_UTIL_REFER_SYMBOL(s_DebugIndicator);
#endif

    bit32* p = __rt_locale();
    *(p + 1) = (bit32)_get_lc_ctype(0, 0) + 1;
    *(p + 3) = (bit32)_get_lc_numeric(0, 0);
}

#include <nn/hw/ARM/code32.h>
extern "C" asm void nninitRegion(void)
{
        ldr     r0, =__cpp(Image$$ZI$$ZI$$Base)
        ldr     r1, =__cpp(Image$$ZI$$ZI$$Limit)
        mov     r2, #0
loop
        cmp     r0, r1
        strcc   r2, [r0], #4
        bcc     loop
        bx      lr
}
#include <nn/hw/ARM/codereset.h>

extern "C" void nninitCheckVersion()
{
    if( nn::os::GetReadOnlySharedInfo().versionLo != NN_VERSION_FIRMWARE_MINOR )
    {
        NN_TPANIC_("System version check failed!\ncci expected=%d current system=%d",
            NN_VERSION_FIRMWARE_MINOR, nn::os::GetReadOnlySharedInfo().versionLo );
    }
}