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/*

 * This file is subject to the terms and conditions of the BSD License. See

 * the file "LICENSE" in the main directory of this archive for more details.

 *

 * Copyright (C) 2014 Aleksander Osman

 */

#include <cstdio>

#include <cstdlib>

#include "tests.h"

//------------------------------------------------------------------------------

void exception_till_exc_init(tst_t *tst, shared_mem_t *shared_ptr) {

    for(int i=1; i<32; i++) shared_ptr->initial.reg[i-1] = rand_uint32();

    shared_ptr->initial.pc = 0xA0001000;

    //tlb left zero

    shared_ptr->initial.index_p             = rand() & 0x1;

    shared_ptr->initial.index_index         = rand() & 0x3F;

    shared_ptr->initial.random              = rand() & 0x3F;

    shared_ptr->initial.entrylo_pfn         = rand() & 0xFFFFF;

    shared_ptr->initial.entrylo_n           = rand() & 0x1;

    shared_ptr->initial.entrylo_d           = rand() & 0x1;

    shared_ptr->initial.entrylo_v           = rand() & 0x1;

    shared_ptr->initial.entrylo_g           = rand() & 0x1;

    shared_ptr->initial.context_ptebase     = rand() & 0x7FF;

    shared_ptr->initial.context_badvpn      = rand() & 0x7FFFF;

    shared_ptr->initial.bad_vaddr           = rand_uint32();

    shared_ptr->initial.entryhi_vpn         = rand() & 0xFFFFF;

    shared_ptr->initial.entryhi_asid        = rand() & 0x3F;

    shared_ptr->initial.sr_cp_usable        = rand() & 0xF;

    shared_ptr->initial.sr_rev_endian       = rand() & 0x1;

    shared_ptr->initial.sr_bootstrap_vec    = rand() & 0x1;

    shared_ptr->initial.sr_tlb_shutdown     = rand() & 0x1;

    shared_ptr->initial.sr_parity_err       = rand() & 0x1;

    shared_ptr->initial.sr_cache_miss       = rand() & 0x1;

    shared_ptr->initial.sr_parity_zero      = rand() & 0x1;

    shared_ptr->initial.sr_switch_cache     = rand() & 0x1;

    shared_ptr->initial.sr_isolate_cache    = rand() & 0x1;

    shared_ptr->initial.sr_irq_mask         = rand() & 0xFF;

    shared_ptr->initial.sr_ku_ie            = rand() & 0x3F;

    shared_ptr->initial.cause_branch_delay  = rand() & 0x1;

    shared_ptr->initial.cause_cp_error      = rand() & 0x3;

    shared_ptr->initial.cause_irq_pending   = 0;

    shared_ptr->initial.cause_exc_code      = rand() & 0x1F;

    shared_ptr->initial.epc                 = rand_uint32();

    //

    shared_ptr->irq2_at_event = 0xFFFFFFFF;

    shared_ptr->irq3_at_event = 0xFFFFFFFF;

    //

    uint32 *ptr = &shared_ptr->mem.ints[(shared_ptr->initial.pc & 0x1FFFFFFF) / 4];

    uint32 type = rand() % 14;

    if(type == 0) { //SYSCALL

        (*ptr) = rand() & 0x03FFFFC0;

        (*ptr) |= 0b001100;

    }

    else if(type == 1) { //BREAK

        (*ptr) = rand() & 0x03FFFFC0;

        (*ptr) |= 0b001101;

    }

    else if(type == 2) { //CFCz

        (*ptr) = rand() & 0x0C1FFFFF;

        (*ptr) |= (0b0100 << 28) | (0b00010 << 21);

    }

    else if(type == 3) { //CTCz

        (*ptr) = rand() & 0x0C1FFFFF;

        (*ptr) |= (0b0100 << 28) | (0b00110 << 21);

    }

    else if(type == 4) { //LWCz

        (*ptr) = rand() & 0x0FFFFFFF;

        (*ptr) |= (0b1100 << 28);

    }

    else if(type == 5) { //SWCz

        (*ptr) = rand() & 0x0FFFFFFF;

        (*ptr) |= (0b1110 << 28);

    }

    else if(type == 6) { //CFC1_detect

        (*ptr) = rand() & 0x001F07FF;

        (*ptr) |= (0b0100 << 28) | (0b01 << 26) | (0b00010 << 21) | (0b00000 << 11);

    }

    else if(type == 7) { //MFC0123 random

        (*ptr) = rand() & 0x0C1FFFFF;

        (*ptr) |= (0b0100 << 28) | (0b00000 << 21);

    }

    else if(type == 8) { //MFC0

        (*ptr) = rand() & 0x001FFFFF;

        (*ptr) |= (0b0100 << 28) | (0b00 << 26) | (0b00000 << 21);

    }

    else if(type == 9) { //MTC0123 random

        (*ptr) = rand() & 0x0C1FFFFF;

        (*ptr) |= (0b0100 << 28) | (0b00100 << 21);

    }

    else if(type == 10) { //MTC0

        (*ptr) = rand() & 0x001FFFFF;

        (*ptr) |= (0b0100 << 28) | (0b00 << 26) | (0b00100 << 21);

    }

    else if(type == 11) { //COP0123 random

        (*ptr) = rand() & 0x0DFFFFFF;

        (*ptr) |= (0b0100 << 28) | (0b1 << 25);

    }

    else if(type == 12) { //COP0

        (*ptr) = rand() & 0x01FFFFFF;

        (*ptr) |= (0b0100 << 28) | (0b00 << 26) | (0b1 << 25);

    }

    else if(type == 13) { //RFE

        (*ptr) = rand() & 0x01FFFFC0;

        (*ptr) |= (0b0100 << 28) | (0b00 << 26) | (0b1 << 25) | (0b010000 << 0);

    }

    else if(type == 14) { //bc0f

        (*ptr) = rand() & 0x00000000;

        (*ptr) |= (0b0100 << 28) | (0b00 << 26) | (0b01000 << 21) | (0b00000 << 16) | (rand() % 5);

    }

    else if(type == 15) { //bc0t

        (*ptr) = rand() & 0x00000000;

        (*ptr) |= (0b0100 << 28) | (0b00 << 26) | (0b01000 << 21) | (0b00001 << 16) | (rand() % 5);

    }

    else if(type == 15) { //bc0_ign

        (*ptr) = rand() & 0x0000FFFF;

        (*ptr) |= (0b0100 << 28) | (0b00 << 26) | (0b01000 << 21) | (((rand() % 2)? 0b00010 : 0b00011) << 16);

    }

    else if(type == 15) { //bc0 reserved

        (*ptr) = rand() & 0x0000FFFF;

        (*ptr) |= (0b0100 << 28) | (0b00 << 26) | (0b01000 << 21) | ((4 + (rand() % 28)) << 16);

    }

    ptr++;

    for(int i=0; i<5; i++) {

        (*ptr) = rand() & 0x03FFFFC0;

        (*ptr) |= 0b001100; //SYSCALL

        ptr++;

    }

}

//------------------------------------------------------------------------------