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// See LICENSE for license details.

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

// Dhrystone bencmark

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

//

// This is the classic Dhrystone synthetic integer benchmark.

//

#pragma GCC optimize ("no-inline")

#include "dhrystone.h"

void debug_printf(const char* str, ...);

#include "util.h"

// #include <alloca.h>

/* Global Variables: */

Rec_Pointer     Ptr_Glob,

                Next_Ptr_Glob;

int             Int_Glob;

Boolean         Bool_Glob;

char            Ch_1_Glob,

                Ch_2_Glob;

int             Arr_1_Glob [50];

int             Arr_2_Glob [50] [50];

Enumeration     Func_1 ();

  /* forward declaration necessary since Enumeration may not simply be int */

#ifndef REG

        Boolean Reg = false;

#define REG

        /* REG becomes defined as empty */

        /* i.e. no register variables   */

#else

        Boolean Reg = true;

#undef REG

#define REG register

#endif

Boolean         Done;

long            Begin_Time,

                End_Time,

                User_Time;

long            Microseconds,

                Dhrystones_Per_Second;

/* end of variables for time measurement */

int main (int argc, char** argv)

/*****/

  /* main program, corresponds to procedures        */

  /* Main and Proc_0 in the Ada version             */

{

        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   int             Run_Index;

  REG   int             Number_Of_Runs;

  // MSB: instead of calling alloca

  Rec_Type                              Rec_Type_alloc1, Rec_Type_alloc2;

  /* Arguments */

  Number_Of_Runs = NUMBER_OF_RUNS;

  /* Initializations */

//  Next_Ptr_Glob = (Rec_Pointer) alloca (sizeof (Rec_Type));

//  Ptr_Glob = (Rec_Pointer) alloca (sizeof (Rec_Type));

  Next_Ptr_Glob = &Rec_Type_alloc1;

  Ptr_Glob = &Rec_Type_alloc2;

  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.                   */

  debug_printf("\n");

  debug_printf("Dhrystone Benchmark, Version %s\n", Version);

  if (Reg)

  {

    debug_printf("Program compiled with 'register' attribute\n");

  }

  else

  {

    debug_printf("Program compiled without 'register' attribute\n");

  }

  debug_printf("Using %s, HZ=%d\n", CLOCK_TYPE, HZ);

  debug_printf("\n");

  Done = false;

  while (!Done) {

    debug_printf("Trying %d runs through Dhrystone:\n", Number_Of_Runs);

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

    /* Start timer */

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

//MSB:    setStats(1);

    Start_Timer();

    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 */

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

    Stop_Timer();

//MSB:    setStats(0);

    User_Time = End_Time - Begin_Time;

    if (User_Time < Too_Small_Time)

    {

      printf("Measured time too small to obtain meaningful results\n");

      Number_Of_Runs = Number_Of_Runs * 10;

      printf("\n");

    } else Done = true;

  }

  debug_printf("Final values of the variables used in the benchmark:\n");

  debug_printf("\n");

  debug_printf("Int_Glob:            %d\n", Int_Glob);

  debug_printf("        should be:   %d\n", 5);

  debug_printf("Bool_Glob:           %d\n", Bool_Glob);

  debug_printf("        should be:   %d\n", 1);

  debug_printf("Ch_1_Glob:           %c\n", Ch_1_Glob);

  debug_printf("        should be:   %c\n", 'A');

  debug_printf("Ch_2_Glob:           %c\n", Ch_2_Glob);

  debug_printf("        should be:   %c\n", 'B');

  debug_printf("Arr_1_Glob[8]:       %d\n", Arr_1_Glob[8]);

  debug_printf("        should be:   %d\n", 7);

  debug_printf("Arr_2_Glob[8][7]:    %d\n", Arr_2_Glob[8][7]);

  debug_printf("        should be:   Number_Of_Runs + 10\n");

  debug_printf("Ptr_Glob->\n");

  debug_printf("  Ptr_Comp:          %d\n", (long) Ptr_Glob->Ptr_Comp);

  debug_printf("        should be:   (implementation-dependent)\n");

  debug_printf("  Discr:             %d\n", Ptr_Glob->Discr);

  debug_printf("        should be:   %d\n", 0);

  debug_printf("  Enum_Comp:         %d\n", Ptr_Glob->variant.var_1.Enum_Comp);

  debug_printf("        should be:   %d\n", 2);

  debug_printf("  Int_Comp:          %d\n", Ptr_Glob->variant.var_1.Int_Comp);

  debug_printf("        should be:   %d\n", 17);

  debug_printf("  Str_Comp:          %s\n", Ptr_Glob->variant.var_1.Str_Comp);

  debug_printf("        should be:   DHRYSTONE PROGRAM, SOME STRING\n");

  debug_printf("Next_Ptr_Glob->\n");

  debug_printf("  Ptr_Comp:          %d\n", (long) Next_Ptr_Glob->Ptr_Comp);

  debug_printf("        should be:   (implementation-dependent), same as above\n");

  debug_printf("  Discr:             %d\n", Next_Ptr_Glob->Discr);

  debug_printf("        should be:   %d\n", 0);

  debug_printf("  Enum_Comp:         %d\n", Next_Ptr_Glob->variant.var_1.Enum_Comp);

  debug_printf("        should be:   %d\n", 1);

  debug_printf("  Int_Comp:          %d\n", Next_Ptr_Glob->variant.var_1.Int_Comp);

  debug_printf("        should be:   %d\n", 18);

  debug_printf("  Str_Comp:          %s\n",

                                Next_Ptr_Glob->variant.var_1.Str_Comp);

  debug_printf("        should be:   DHRYSTONE PROGRAM, SOME STRING\n");

  debug_printf("Int_1_Loc:           %d\n", Int_1_Loc);

  debug_printf("        should be:   %d\n", 5);

  debug_printf("Int_2_Loc:           %d\n", Int_2_Loc);

  debug_printf("        should be:   %d\n", 13);

  debug_printf("Int_3_Loc:           %d\n", Int_3_Loc);

  debug_printf("        should be:   %d\n", 7);

  debug_printf("Enum_Loc:            %d\n", Enum_Loc);

  debug_printf("        should be:   %d\n", 1);

  debug_printf("Str_1_Loc:           %s\n", Str_1_Loc);

  debug_printf("        should be:   DHRYSTONE PROGRAM, 1'ST STRING\n");

  debug_printf("Str_2_Loc:           %s\n", Str_2_Loc);

  debug_printf("        should be:   DHRYSTONE PROGRAM, 2'ND STRING\n");

  debug_printf("\n");

  Microseconds = ((User_Time / Number_Of_Runs) * Mic_secs_Per_Second) / HZ;

//  Dhrystones_Per_Second = (HZ * Number_Of_Runs) / User_Time;

  Dhrystones_Per_Second = Number_Of_Runs * (HZ / User_Time);

  printf("start=%ld ; end=%ld\n", Begin_Time, End_Time);

  printf("Microseconds for one run through Dhrystone: %ld\n", Microseconds);

  printf("Dhrystones per Second:                      %ld\n", Dhrystones_Per_Second);

  return 0;

}

void Proc_1 (REG Rec_Pointer Ptr_Val_Par)

    /* executed once */

{

  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)

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

    /* executed once */

    /* *Int_Par_Ref == 1, becomes 4 */

{

  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 */

} /* Proc_2 */

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 () /* without parameters */

/*******/

    /* executed once */

{

  Boolean Bool_Loc;

  Bool_Loc = Ch_1_Glob == 'A';

  Bool_Glob = Bool_Loc | Bool_Glob;

  Ch_2_Glob = 'B';

} /* Proc_4 */

void Proc_5 () /* without parameters */

/*******/

    /* executed once */

{

  Ch_1_Glob = 'A';

  Bool_Glob = false;

} /* Proc_5 */