File content as of revision 0:16f8af9370b6:

//********************************************************
//**   "DHRYSTONE" Benchmark C, Version 2.1         ******
//**            for  ARM Cortex-M7 MCU C++          ******
//**   ( ST Nucleo-144 Stm32F746 and Stm32F767 )    ******
//**   Based on work by Ken Boakby for Ardiono IDE  ******
//**                modified by                     ******
//**            Jovan Ivkovic 2017.                 ******
//**         JovanEps (jovan.eps@gmail.com).        ******
//********************************************************
#include "mbed.h"
#include "dhry.h"
DigitalOut myled(LED1);
Serial pc(USBTX, USBRX);
Timer timer;

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
/* the following is optional depending on the timing function used */
#include <time.h>


/* Global Variables: */

Rec_Pointer Ptr_Glob,Next_Ptr_Glob;
int Int_Glob;
Booleann Bool_Glob;
char Ch_1_Glob, Ch_2_Glob;
int Arr_1_Glob[25];        /* <-- changed from 50 */
int Arr_2_Glob[25][25];   /* <-- changed from 50 */

char Reg_Define[] = "Register option selected.";

#ifndef ROPT
#define REG
/* REG becomes defined as empty */
/* i.e. no register variables   */
#else
#define REG register
#endif


/* Procedure for the assignment of structures,          */
/* if the C compiler doesn't support this feature       */
#ifdef  NOSTRUCTASSIGN
memcpy (d, s, l)
register char   *d;
register char   *s;
register int    l;
{
    while (l--) *d++ = *s++;
}
#endif

/* variables for time measurement: */

#define Too_Small_Time 1000000
/* Measurements should last at least 1-2 seconds */

uint32_t      Begin_Time,
              End_Time,
              User_Time;

double        Microseconds,
              Dhrystones_Per_Second,
              Vax_Mips;

/* end of variables for time measurement */

void Proc_1( REG Rec_Pointer Ptr_Val_Par );
void Proc_2( One_Fifty * Int_Par_Ref );
void Proc_3( Rec_Pointer * Ptr_Ref_Par );
void Proc_4( void );
void Proc_5( void );



//************************************
//**    "DHRYSTONE" Benchmark       **
//**        SUB                     **
//************************************
void DHRYSTONE() // ------------ Metoda -----------
{
//* main program, corresponds to procedures        */
//**************************************************************
    One_Fifty       Int_1_Loc;
    REG   One_Fifty       Int_2_Loc;
    One_Fifty       Int_3_Loc;
    REG   char            Ch_Index;
    Enumeration     Enum_Loc;
    Str_30          Str_1_Loc;
    Str_30          Str_2_Loc;
    REG   long            Run_Index;
    REG   long            Number_Of_Runs;

//**************************************************************
    /* Initializations */
//**************************************************************

    pc.printf("\n Dhrystone Benchmark, Version 2.1 (Language: C)");
    pc.printf("Beginning DHRYSTONE Benchmark \n");
    pc.printf("Default MCU clock is 216 MHz \n");
    
    Next_Ptr_Glob = (Rec_Pointer)malloc (sizeof (Rec_Type));
    Ptr_Glob = (Rec_Pointer)malloc (sizeof (Rec_Type));

    Ptr_Glob->Ptr_Comp                    = Next_Ptr_Glob;
    Ptr_Glob->Discr                       = Ident_1;
    Ptr_Glob->variant.var_1.Enum_Comp     = Ident_3;
    Ptr_Glob->variant.var_1.Int_Comp      = 40;
    strcpy (Ptr_Glob->variant.var_1.Str_Comp,
            "DHRYSTONE PROGRAM, SOME STRING");
    strcpy (Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");

    Arr_2_Glob [8][7] = 10;
    /* Was missing in published program. Without this statement,    */
    /* Arr_2_Glob [8][7] would have an undefined value.             */
    /* Warning: With 16-Bit processors and Number_Of_Runs > 32000,  */
    /* overflow may occur for this array element.                   */

    Number_Of_Runs = 2000000;

    pc.printf("Execution starts, ");
    pc.printf("%d", Number_Of_Runs);
    pc.printf("\n runs through Dhrystone");
    pc.printf("\n") ;

    /***************/
    /* Start timer */
    /***************/
    timer.start();
    Begin_Time = timer.read_us();
    //****************************

    for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index) {
        Proc_5();
        Proc_4();
        /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */
        Int_1_Loc = 2;
        Int_2_Loc = 3;
        strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
        Enum_Loc = Ident_2;
        Bool_Glob = !Func_2(Str_1_Loc, Str_2_Loc);
        /* Bool_Glob == 1 */
        while (Int_1_Loc < Int_2_Loc) { /* loop body executed once */
            Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc;
            /* Int_3_Loc == 7 */
            Proc_7(Int_1_Loc, Int_2_Loc, &Int_3_Loc);
            /* Int_3_Loc == 7 */
            Int_1_Loc += 1;
        } /* while */
        /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
        Proc_8(Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc);
        /* Int_Glob == 5 */
        Proc_1 (Ptr_Glob);
        for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index)
            /* loop body executed twice */
        {
            if (Enum_Loc == Func_1(Ch_Index, 'C'))
                /* then, not executed */
            {
                Proc_6(Ident_1, &Enum_Loc);
                strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING");
                Int_2_Loc = Run_Index;
                Int_Glob = Run_Index;
            }
        }
        /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
        Int_2_Loc = Int_2_Loc * Int_1_Loc;
        Int_1_Loc = Int_2_Loc / Int_3_Loc;
        Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc;
        /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */
        Proc_2 (&Int_1_Loc);
        /* Int_1_Loc == 5 */

    } /* loop "for Run_Index" */

    /**************/
    /* Stop timer */
    /**************/

    End_Time = timer.read_us();
    User_Time = End_Time - Begin_Time;

    pc.printf("\n  Execution ends in : ");
    pc.printf("%d us \n", User_Time);

    if (User_Time < Too_Small_Time) {
        pc.printf("\n Measured time too small to obtain meaningful results");
        pc.printf("\n Please increase number of runs");
        pc.printf("\n");
    } else {
        Microseconds = (double) User_Time / (double) Number_Of_Runs;
        Dhrystones_Per_Second = (double) Number_Of_Runs / ((double) User_Time / 1000000.0);
        Vax_Mips = Dhrystones_Per_Second / 1757.0;
    }
    pc.printf("\n Microseconds for one run through Dhrystone: ");
    pc.printf("%9.2f \n", Microseconds);
    pc.printf("\n Dhrystones per Second: ");
    pc.printf("%9.2f \n",Dhrystones_Per_Second);
    pc.printf("\n VAX MIPS rating = ");
    pc.printf("%9.2f \n",Vax_Mips);

    timer.reset();
    timer.stop();
}

//**************************************************************
void Proc_1( REG Rec_Pointer Ptr_Val_Par )
//**************************************************************
{
    REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp;
    /* == Ptr_Glob_Next */
    /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp,    */
    /* corresponds to "rename" in Ada, "with" in Pascal           */

    structassign (*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob);
    Ptr_Val_Par->variant.var_1.Int_Comp = 5;
    Next_Record->variant.var_1.Int_Comp
    = Ptr_Val_Par->variant.var_1.Int_Comp;
    Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp;
    Proc_3 (&Next_Record->Ptr_Comp);
    /* Ptr_Val_Par->Ptr_Comp->Ptr_Comp
                        == Ptr_Glob->Ptr_Comp */
    if (Next_Record->Discr == Ident_1)
        /* then, executed */
    {
        Next_Record->variant.var_1.Int_Comp = 6;
        Proc_6(Ptr_Val_Par->variant.var_1.Enum_Comp,
               &Next_Record->variant.var_1.Enum_Comp);
        Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp;
        Proc_7(Next_Record->variant.var_1.Int_Comp, 10,
               &Next_Record->variant.var_1.Int_Comp);
    } else /* not executed */
        structassign (*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp);
} /* Proc_1 */

//**************************************************************
void Proc_2( One_Fifty * Int_Par_Ref )
{
//**************************************************************
    One_Fifty  Int_Loc;
    Enumeration   Enum_Loc;

    Int_Loc = *Int_Par_Ref + 10;
    do /* executed once */
        if (Ch_1_Glob == 'A')
            /* then, executed */
        {
            Int_Loc -= 1;
            *Int_Par_Ref = Int_Loc - Int_Glob;
            Enum_Loc = Ident_1;
        } /* if */
    while (Enum_Loc != Ident_1); /* true */
}

//**************************************************************
void Proc_3( Rec_Pointer * Ptr_Ref_Par )
{
//**************************************************************
    if (Ptr_Glob != Null) {
        /* then, executed */
        *Ptr_Ref_Par = Ptr_Glob->Ptr_Comp;
    }
    Proc_7(10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp);
} /* Proc_3 */

//**************************************************************
void Proc_4( void )
{
//**************************************************************
    Booleann Bool_Loc;

    Bool_Loc = Ch_1_Glob == 'A';
    Bool_Glob = Bool_Loc | Bool_Glob;
    Ch_2_Glob = 'B';
} /* Proc_4 */

//**************************************************************
void Proc_5( void )
{
//**************************************************************
    Ch_1_Glob = 'A';
    Bool_Glob = false;
} /* Proc_5 */



Booleann Func_3( Enumeration Enum_Par_Val );

//**************************************************************
void Proc_6( Enumeration Enum_Val_Par, Enumeration * Enum_Ref_Par )
{
//**************************************************************
    *Enum_Ref_Par = Enum_Val_Par;
    if (! Func_3 (Enum_Val_Par))
        /* then, not executed */
        *Enum_Ref_Par = Ident_4;
    switch (Enum_Val_Par) {
        case Ident_1:
            *Enum_Ref_Par = Ident_1;
            break;
        case Ident_2:
            if (Int_Glob > 100)
                /* then */
                *Enum_Ref_Par = Ident_1;
            else *Enum_Ref_Par = Ident_4;
            break;
        case Ident_3: /* executed */
            *Enum_Ref_Par = Ident_2;
            break;
        case Ident_4:
            break;
        case Ident_5:
            *Enum_Ref_Par = Ident_3;
            break;
    } /* switch */
}

//**************************************************************
void Proc_7( One_Fifty Int_1_Par_Val, One_Fifty Int_2_Par_Val,
             One_Fifty * Int_Par_Ref )
{
//**************************************************************
    One_Fifty Int_Loc;

    Int_Loc = Int_1_Par_Val + 2;
    *Int_Par_Ref = Int_2_Par_Val + Int_Loc;
} /* Proc_7 */

//**************************************************************
void Proc_8( Arr_1_Dim Arr_1_Par_Ref, Arr_2_Dim Arr_2_Par_Ref,
             int Int_1_Par_Val, int Int_2_Par_Val )
{
//**************************************************************
    REG One_Fifty Int_Index;
    REG One_Fifty Int_Loc;

    Int_Loc = Int_1_Par_Val + 5;
    Arr_1_Par_Ref [Int_Loc] = Int_2_Par_Val;
    Arr_1_Par_Ref [Int_Loc+1] = Arr_1_Par_Ref [Int_Loc];
    Arr_1_Par_Ref [Int_Loc+15] = Int_Loc;
    for (Int_Index = Int_Loc; Int_Index <= Int_Loc+1; ++Int_Index)
        Arr_2_Par_Ref [Int_Loc] [Int_Index] = Int_Loc;
    Arr_2_Par_Ref [Int_Loc] [Int_Loc-1] += 1;
    Arr_2_Par_Ref [Int_Loc+10] [Int_Loc] = Arr_1_Par_Ref [Int_Loc];
    Int_Glob = 5;
} /* Proc_8 */

//**************************************************************
Enumeration Func_1( Capital_Letter Ch_1_Par_Val, Capital_Letter Ch_2_Par_Val )
{
//**************************************************************

    Capital_Letter        Ch_1_Loc;
    Capital_Letter        Ch_2_Loc;

    Ch_1_Loc = Ch_1_Par_Val;
    Ch_2_Loc = Ch_1_Loc;
    if (Ch_2_Loc != Ch_2_Par_Val)
        /* then, executed */
        return (Ident_1);
    else { /* not executed */
        Ch_1_Glob = Ch_1_Loc;
        return (Ident_2);
    }
} /* Func_1 */

//**************************************************************
Booleann Func_2( Str_30 Str_1_Par_Ref, Str_30 Str_2_Par_Ref )
{
//**************************************************************

    REG One_Thirty Int_Loc;
    Capital_Letter Ch_Loc;

    Int_Loc = 2;
    while (Int_Loc <= 2) /* loop body executed once */
        if (Func_1 (Str_1_Par_Ref[Int_Loc],
                    Str_2_Par_Ref[Int_Loc+1]) == Ident_1)
            /* then, executed */
        {
            Ch_Loc = 'A';
            Int_Loc += 1;
        } /* if, while */
    if (Ch_Loc >= 'W' && Ch_Loc < 'Z')
        /* then, not executed */
        Int_Loc = 7;
    if (Ch_Loc == 'R')
        /* then, not executed */
        return (true);
    else { /* executed */
        if (strcmp (Str_1_Par_Ref, Str_2_Par_Ref) > 0)
            /* then, not executed */
        {
            Int_Loc += 7;
            Int_Glob = Int_Loc;
            return (true);
        } else /* executed */
            return (false);
    } /* if Ch_Loc */
} /* Func_2 */

//**************************************************************
Booleann Func_3( Enumeration Enum_Par_Val )
{
//**************************************************************
    Enumeration Enum_Loc;

    Enum_Loc = Enum_Par_Val;
    if (Enum_Loc == Ident_3)
        /* then, executed */
        return (true);
    else /* not executed */
        return (false);
} /* Func_3 */
//**************************************************************



//*********************************
//**         MAIN block          **
//*********************************
int main()
{
    pc.baud(9600);

    while(1) {
        myled= !myled;

        DHRYSTONE(); //Call

        myled= !myled;
        wait_us(3);
    }
}


//**************************************************************