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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++;
    }
}
 
//------------------------------------------------------------------------------