endianness.c

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#include "assert.h"
#include "Buzz_inc.h"
#include "externs.h"

// Need these functions to always exist
uint32_t _Swap32bit(uint32_t value)
{
      return (( value >> 24) | ((value >> 8) & 0x0000FF00) | ((value << 8) & 0x00FF0000) | (value << 24));
}

uint16_t _Swap16bit(uint16_t value)
{
      return ((value << 8) | (value >> 8));
}

// This will swap all the player structures
void SwapGameDat(void)
{
    i16 i,j;

    Swap32bit_alt(*((ui32*)&Data->EMark));
    Swap32bit_alt(Data->Checksum);

    for (j = 0; j < 28; j++)
    {
        Swap16bit_alt(Data->Prestige[j].Points[0]);
        Swap16bit_alt(Data->Prestige[j].Points[1]);
    }
    
    for (j = 0; j < 2 ; j++) {
        Swap16bit_alt(Data->P[j].Cash);
        Swap16bit_alt(Data->P[j].Budget);
        Swap16bit_alt(Data->P[j].Prestige);
        
        for (i = 0; i < 5; i++)
        {
            Swap16bit_alt(Data->P[j].PrestHist[i][0]);
            Swap16bit_alt(Data->P[j].PrestHist[i][1]);
            
            Swap16bit_alt(Data->P[j].PresRev[i]);
            
            Swap16bit_alt(Data->P[j].Spend[i][0]);
            Swap16bit_alt(Data->P[j].Spend[i][1]);
            Swap16bit_alt(Data->P[j].Spend[i][2]);
            Swap16bit_alt(Data->P[j].Spend[i][3]);
        }
        
        Swap16bit_alt(Data->P[j].tempPrestige[0]);
        Swap16bit_alt(Data->P[j].tempPrestige[1]);
        
        for (i = 0; i < 40; i++)
        {
            Swap16bit_alt(Data->P[j].BudgetHistory[i]);
            Swap16bit_alt(Data->P[j].BudgetHistoryF[i]);
        }
        
        for (i=0;i<3;i++) {
            Swap16bit_alt(Data->P[j].Probe[i].InitCost);
            Swap16bit_alt(Data->P[j].Probe[i].UnitWeight);
            Swap16bit_alt(Data->P[j].Probe[i].MaxPay);
            Swap16bit_alt(Data->P[j].Probe[i].Safety);
        };
        for (i=0;i<5;i++) {
            Swap16bit_alt(Data->P[j].Rocket[i].InitCost);
            Swap16bit_alt(Data->P[j].Rocket[i].UnitWeight);
            Swap16bit_alt(Data->P[j].Rocket[i].MaxPay);
            Swap16bit_alt(Data->P[j].Rocket[i].Safety);
        };
        for (i=0;i<7;i++) {
            Swap16bit_alt(Data->P[j].Manned[i].InitCost);
            Swap16bit_alt(Data->P[j].Manned[i].UnitWeight);
            Swap16bit_alt(Data->P[j].Manned[i].MaxPay);
            Swap16bit_alt(Data->P[j].Manned[i].Safety);
        };
        for (i=0;i<7;i++) {
            Swap16bit_alt(Data->P[j].Misc[i].InitCost);
            Swap16bit_alt(Data->P[j].Misc[i].UnitWeight);
            Swap16bit_alt(Data->P[j].Misc[i].MaxPay);
            Swap16bit_alt(Data->P[j].Misc[i].Safety);
        };      
        
        for (i = 0; i< 65; i++)
        {
            Swap16bit_alt(Data->P[j].Pool[i].Prestige);
        }
        
        
        Swap16bit_alt(Data->P[j].PastMis);

        for (i = 0; i < 30; i++)
            Swap16bit_alt(Data->P[j].PastIntel[i].num);

    }
    // End of GameDatSwap
}

#ifdef __BIG_ENDIAN__
void
SwapPatchHdr(PatchHdr *hdr)
{
    assert(hdr);

    Swap16bit(hdr->w);
    Swap16bit(hdr->h);
    Swap16bit(hdr->size);
    Swap32bit(hdr->offset);
}

void
SwapPatchHdrSmall(PatchHdrSmall *hdr)
{
    assert(hdr);

    Swap16bit(hdr->size);
    Swap32bit(hdr->offset);
}
#endif

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