/*---------------------------------------------------------------------------*
  Project:  rsodemo
  File:     static.c

  Copyright 2006 Nintendo.  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.
  
  @version $Id: static.c,v 1.8 2006/09/11 06:35:03 srd_komatu Exp $
  
  $NoKeywords: $
 *---------------------------------------------------------------------------*/

#include <revolution.h>

#include <revolution/rso.h>
#include <revolution/RSOLink.h>


#ifdef _DEBUG
#define MODULE_E     "/eD.rso"
#define MODULE_F     "/fD.rso"
#define STATIC_RSO   "/staticD.sel"
#else
#define MODULE_E     "/e.rso"
#define MODULE_F     "/f.rso"
#define STATIC_RSO   "/static.sel"
#endif

//
void _unresolved();

/*---------------------------------------------------------------------------*
   Load
 *---------------------------------------------------------------------------*/
// Load and link the specified module
static RSOObjectHeader* RsoLoad(char* moduleName)
{
    DVDFileInfo     fileInfo;
    s32             length;
    BOOL            result;
    RSOObjectHeader* module;
    u8*             bss;

    result = DVDOpen(moduleName, &fileInfo);
    if (!result)
        return NULL;
    length = (s32) OSRoundUp32B(DVDGetLength(&fileInfo));
    module = OSAllocFromArenaLo((u32) length, 32);
    result = DVDRead(&fileInfo, module, length, 0);
    if (!result)
        return NULL;
    DVDClose(&fileInfo);
    
    if (module->bssSize > 0)
    {
        bss = OSAllocFromArenaLo(module->bssSize, 32); // alloc bss area
    }
    RSOLinkList(module, bss);

    return module;
}

//
static RSOObjectHeader* RsoLoadMem2(char* moduleName)
{
    DVDFileInfo     fileInfo;
    s32             length;
    BOOL            result;
    RSOObjectHeader* module;
    u8*             bss;

    result = DVDOpen(moduleName, &fileInfo);
    if (!result)
        return NULL;
    length = (s32) OSRoundUp32B(DVDGetLength(&fileInfo));
    module = OSAllocFromMEM2ArenaLo((u32) length, 32);
    result = DVDRead(&fileInfo, module, length, 0);
    if (!result)
        return NULL;
    DVDClose(&fileInfo);
    
    if (module->bssSize > 0)
    {
        bss = OSAllocFromMEM2ArenaLo(module->bssSize, 32); // alloc bss area
    }
    RSOLinkList(module, bss);

    return module;
}

// Load and link the static module
static RSOObjectHeader* StaticRsoLoad(char* moduleName)
{
    DVDFileInfo     fileInfo;
    s32             length;
    BOOL            result;
    RSOObjectHeader* module;

    result = DVDOpen(moduleName, &fileInfo);
    if (!result)
        return NULL;
    length = (s32) OSRoundUp32B(DVDGetLength(&fileInfo));
    module = OSAllocFromArenaLo((u32) length, 32);
    result = DVDRead(&fileInfo, module, length, 0);
    if (!result)
        return NULL;
    DVDClose(&fileInfo);

    RSOListInit(module);
    
    return module;    
}

//
void _unresolved()
{
    OSReport("_unresolved func.\n");
}


// Functions and variables to be accessed
void (*MainE)();
void (*IsEThere)();
int  (*g_intE);

//
static RSOExportFuncTable exp_tbl[] =
{
    {"MainE",   (u32 *)&MainE},
    {"IsEThere",(u32 *)&IsEThere},
    {"g_intE",  (u32 *)&g_intE},
};
//
static void RSOResolvedModuleE(const RSOObjectHeader* module)
{
    int i;
    for(i = 0; i < sizeof(exp_tbl)/sizeof(RSOExportFuncTable); i++) {
        *(exp_tbl[i].symbol_ptr) =
            (u32)RSOFindExportSymbolAddr(module, exp_tbl[i].symbol_name);
        
    }
}

//
static void RSOUnresolvedModuleE(void)
{
    int i;
    for(i = 0; i < sizeof(exp_tbl)/sizeof(RSOExportFuncTable); i++) {
        *(exp_tbl[i].symbol_ptr) = (u32)_unresolved;    
    }
}

//main
int main(void)
{
    RSOObjectHeader* staticRso;
    RSOObjectHeader* moduleE;
    RSOObjectHeader* moduleF;

    // Generate weak symbol 'InlineFunc'
    DVDInit();
    
    // Read data
    // Load static rso file
    OSReport("Loading static rso...\n");
    staticRso = StaticRsoLoad(STATIC_RSO);
    if (!staticRso)
        return 1;
    
    // Load and link module E
    OSReport("Linking module E...\n");
    moduleE = RsoLoadMem2(MODULE_E);
    if (!moduleE) {
        return 1;
    }

    // Load and link module F
    OSReport("Linking module F...\n");
    moduleF = RsoLoad(MODULE_F);
    if (!moduleF) {
        return 1;
    }
        
    // Check whether all symbols are resolved
    if (RSOIsImportSymbolResolvedAll(moduleE))
    {
        OSReport("moduleE's ImportSymbol is resolved all.\n");
    }
    if (RSOIsImportSymbolResolvedAll(moduleF))
    {
        OSReport("moduleF's ImportSymbol is resolved all.\n");
    }   
    //
    OSReport("\nE prolog()\n");
    ((u32 (*)(void)) moduleE->prolog)();
    RSOResolvedModuleE(moduleE);
    //
    OSReport("\nF prolog()\n");
    ((u32 (*)(void)) moduleF->prolog)();
    //
    MainE();
    *g_intE += 5;
    MainE();
    
    //
    OSReport("\nE epilog()\n");
    ((u32 (*)(void)) moduleE->epilog)();
    RSOUnresolvedModuleE();
    //
    OSReport("\nF epilog()\n");
    ((u32 (*)(void)) moduleF->epilog)();
    //
    RSOUnLinkList(moduleE);
    RSOUnLinkList(moduleF);
    //
    OSReport("\nRSOLink finish all!\n");

    return 0;
}