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[/] [mblite/] [trunk/] [sw/] [testbench/] [testbench.c] - Blame information for rev 10

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1 2 takar
/* THIS IS THE OFFICIAL MB-LITE TESTBENCH */
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/* This file should be modified with care. It is designed
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   against the design in the directory mblite/design/core. */
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/* Code coverage was measure by using modelsim coverage tools.
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   All statements have been executed at least once. The
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   correct console output is listed in the file
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   result.txt. */
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#include "stdio.h"
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#include <stdio.h>
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#include <malloc.h>
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#include <math.h>
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#include "dhry.h"
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int interrupt = 1;
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void test_passed()
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{
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    xil_printf("OK!\n\n");
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}
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void test_failed()
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{
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    xil_printf("FAILED!\n\n");
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}
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void __attribute__ ((interrupt_handler)) interruptHandler()
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{
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    xil_printf("Handling interrupt routine\n");
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    interrupt = 0;
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}
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int fib1(int n)
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{
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    /* WARNING! Using n > 10 requires huge stack and might cause problems! */
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    switch (n) {
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        case 0:
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            return 0;
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        case 1:
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            return 1;
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        default:
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            return fib1(n-1) + fib1(n-2);
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    }
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}
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int fib2(int n)
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{
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    int a[3];
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    int *p=a;
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    int i;
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    for(i=0; i<=n; ++i)
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    {
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        if(i<2)
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            *p=i;
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        else
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        {
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            if(p==a)
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                *p=*(a+1)+*(a+2);
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            else if(p==a+1)
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                *p=*a+*(a+2);
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            else
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                *p=*a+*(a+1);
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        }
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        if(++p>a+2)
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            p=a;
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    }
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    return p==a?*(p+2):*(p-1);
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}
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int gcd(int a, int b)
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{
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    if (b > a)
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        goto b_larger;
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    while (1)
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    {
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        a = a % b;
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        if (a == 0) return b;
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    b_larger:
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        b = b % a;
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        if (b == 0) return a;
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    }
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}
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int memoryTest(int size)
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{
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    volatile void *alloc;
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    int magic;
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    alloc = malloc(size * sizeof(int)); /* allocate 32 byte */
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    if (alloc == NULL)
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        return 0;
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    *(int *)alloc = 577; /* write to memory */
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    magic = *(int *)alloc; /* read from memory */
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    return magic;
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}
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int uncommonInstructions()
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{
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    int mtb = 1234567;
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    int a = 1;
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    int b = 4;
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    /* jump to PC + mtb if a == 1; */
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    __asm__ volatile ("beq %0, %1;"::"r"(a),"r"(mtb));
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    mtb = 241;
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    __asm__ volatile ("bsra %0, %1, %2":"=r"(mtb):"r"(mtb), "r"(b));
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    if(mtb != 15)
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    {
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        return 1;
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    }
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    __asm__ volatile ("andn %0, %1, %2":"=r"(mtb):"r"(mtb), "r"(a));
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    if(mtb != 14)
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    {
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        return 2;
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    }
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    mtb = 241;
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    __asm__ volatile ("andni %0, %1, 192":"=r"(mtb):"r"(mtb));
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    if(mtb != 49)
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    {
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        return 3;
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    }
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    mtb = 241;
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    __asm__ volatile ("muli %0, %1, 241":"=r"(mtb):"r"(mtb));
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    if(mtb != 58081)
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    {
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        return 4;
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    }
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    __asm__ volatile ("src %0, %1;":"=r"(mtb):"r"(mtb));
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    if(mtb != 29040)
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    {
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        return 5;
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    }
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    return 0;
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}
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int main()
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{
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    int a, b;
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    float f;
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    xil_printf("Welcome to the MB-Lite Testbench\n\n");
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    xil_printf("1. Testing Interrupt...\n");
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    while(interrupt){}
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    test_passed();
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    xil_printf("2. Testing Integer Arithmetic\n");
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    a = fib1(8);
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    b = fib2(8);
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    if(a == b && gcd(1365180540, 1540383426) == 6)
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    {
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         test_passed();
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    }
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    else
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    {
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         test_failed();
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         return 0;
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    }
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    xil_printf("3. Testing memory allocation\n");
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    if(memoryTest(1) == 577)
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    {
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         test_passed();
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    }
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    else
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    {
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         test_failed();
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         return 0;
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    }
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    xil_printf("4. Testing Floating Point Arithmetic\n");
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    f = sqrt(2.0);
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    if(f < 1.41421354 && f > 1.41421353)
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    {
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         test_passed();
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    }
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    else
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    {
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         test_failed();
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         return 0;
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    }
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    xil_printf("5. Testing uncommon instructions\n");
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    a = uncommonInstructions();
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    if(a == 0)
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    {
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         test_passed();
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    }
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    else
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    {
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        xil_printf("%d\n", a);
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        test_failed();
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        return 0;
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    }
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    xil_printf("6. Executing dhrystone benchmark\n");
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    a = dhry();
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    if(a == 0)
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    {
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         test_passed();
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    }
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    else
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    {
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         test_failed();
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         return 0;
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    }
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    xil_printf("The testbench is now finished.\n");
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    return 0;
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}

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