コード例 #1
0
void
ARMul_LDC (ARMul_State * state, ARMword instr, ARMword address)
{
    unsigned cpab;
    ARMword data;

    UNDEF_LSCPCBaseWb;

    if (! CP_ACCESS_ALLOWED (state, CPNum))
    {
        ARMul_UndefInstr (state, instr);
        return;
    }

    if (ADDREXCEPT (address))
        INTERNALABORT (address);

    cpab = (state->LDC[CPNum]) (state, ARMul_FIRST, instr, 0);
    while (cpab == ARMul_BUSY)
    {
        ARMul_Icycles (state, 1, 0);

        if (IntPending (state))
        {
            cpab = (state->LDC[CPNum]) (state, ARMul_INTERRUPT, instr, 0);
            return;
        }
        else
            cpab = (state->LDC[CPNum]) (state, ARMul_BUSY, instr, 0);
    }
    if (cpab == ARMul_CANT)
    {
        CPTAKEABORT;
        return;
    }

    cpab = (state->LDC[CPNum]) (state, ARMul_TRANSFER, instr, 0);
    data = ARMul_LoadWordN (state, address);
    BUSUSEDINCPCN;

    if (BIT (21))
        LSBase = state->Base;
    cpab = (state->LDC[CPNum]) (state, ARMul_DATA, instr, data);

    while (cpab == ARMul_INC)
    {
        address += 4;
        data = ARMul_LoadWordN (state, address);
        cpab = (state->LDC[CPNum]) (state, ARMul_DATA, instr, data);
    }

    if (state->abortSig || state->Aborted)
        TAKEABORT;
}
コード例 #2
0
ファイル: armsupp.cpp プロジェクト: IRntGreat/citra
void
ARMul_LDC (ARMul_State * state, ARMword instr, ARMword address)
{
    unsigned cpab;
    ARMword data;

    UNDEF_LSCPCBaseWb;
    //printf("SKYEYE ARMul_LDC, CPnum is %x, instr %x, addr %x\n",CPNum, instr, address);
    /*chy 2004-05-23 should update this function in the future,should concern dataabort*/
// chy 2004-05-25 , fix it now,so needn't printf
//  printf("SKYEYE ARMul_LDC, should update this function!!!!!\n");
    //exit(-1);

    //if (!CP_ACCESS_ALLOWED (state, CPNum)) {
    if (!state->LDC[CPNum]) {
        /*
           printf
           ("SKYEYE ARMul_LDC,NOT ALLOW, underinstr, CPnum is %x, instr %x, addr %x\n",
           CPNum, instr, address);
         */
        ARMul_UndefInstr (state, instr);
        return;
    }

    /*if (ADDREXCEPT (address))
          INTERNALABORT (address);*/

    cpab = (state->LDC[CPNum]) (state, ARMul_FIRST, instr, 0);
    while (cpab == ARMul_BUSY) {
        ARMul_Icycles (state, 1, 0);

        if (IntPending (state)) {
            cpab = (state->LDC[CPNum]) (state, ARMul_INTERRUPT,
                                        instr, 0);
            return;
        } else
            cpab = (state->LDC[CPNum]) (state, ARMul_BUSY, instr,
                                        0);
    }
    if (cpab == ARMul_CANT) {
        /*
           printf
           ("SKYEYE ARMul_LDC,NOT CAN, underinstr, CPnum is %x, instr %x, addr %x\n",
           CPNum, instr, address);
         */
        CPTAKEABORT;
        return;
    }

    cpab = (state->LDC[CPNum]) (state, ARMul_TRANSFER, instr, 0);
    data = ARMul_LoadWordN (state, address);
    //chy 2004-05-25
    if (state->abortSig || state->Aborted)
        goto L_ldc_takeabort;

    BUSUSEDINCPCN;
//chy 2004-05-25
    /*
      if (BIT (21))
        LSBase = state->Base;
    */

    cpab = (state->LDC[CPNum]) (state, ARMul_DATA, instr, data);

    while (cpab == ARMul_INC) {
        address += 4;
        data = ARMul_LoadWordN (state, address);
        //chy 2004-05-25
        if (state->abortSig || state->Aborted)
            goto L_ldc_takeabort;

        cpab = (state->LDC[CPNum]) (state, ARMul_DATA, instr, data);
    }

//chy 2004-05-25
L_ldc_takeabort:
    if (BIT (21)) {
        if (!
                ((state->abortSig || state->Aborted)
                 && state->lateabtSig == LOW))
            LSBase = state->Base;
    }

    if (state->abortSig || state->Aborted)
        TAKEABORT;
}