sdcc-extra/historygraphs/dhrystone-stm8/dhry_1.c

   1 /*
   2  ****************************************************************************
   3  *
   4  *                   "DHRYSTONE" Benchmark Program
   5  *                   -----------------------------
   6  *
   7  *  Version:    C, Version 2.1
   8  *
   9  *  File:       dhry_1.c (part 2 of 3)
  10  *
  11  *  Date:       May 25, 1988
  12  *
  13  *  Author:     Reinhold P. Weicker
  14  *
  15  ****************************************************************************
  16  */
  17
  18 #include "dhry.h"
  19
  20 /* Global Variables: */
  21
  22 Rec_Pointer     Ptr_Glob,
  23                 Next_Ptr_Glob;
  24 int             Int_Glob;
  25 Boolean         Bool_Glob;
  26 char            Ch_1_Glob,
  27                 Ch_2_Glob;
  28 int             Arr_1_Glob [50];
  29 int             Arr_2_Glob [50] [50];
  30
  31
  32
  33 //extern void     *malloc (unsigned int s);
  34 int scanf(const char *format, ...);
  35 /*Enumeration     Func_1 (); Forward declaration now in dhry.h */
  36   /* forward declaration necessary since Enumeration may not simply be int */
  37
  38 #ifndef REG
  39         Boolean Reg = false;
  40 #define REG
  41         /* REG becomes defined as empty */
  42         /* i.e. no register variables   */
  43 #else
  44         Boolean Reg = true;
  45 #endif
  46
  47 /* variables for time measurement: */
  48
  49 #ifdef TIMES
  50 struct tms      time_info;
  51 extern  int     times ();
  52                 /* see library function "times" */
  53 #define Too_Small_Time 120
  54                 /* Measurements should last at least about 2 seconds */
  55 #endif
  56 #ifdef TIME
  57 extern long     time(long *);
  58                 /* see library function "time"  */
  59 #define Too_Small_Time 2
  60                 /* Measurements should last at least 2 seconds */
  61 #endif
  62
  63 #if 1
  64 unsigned int clock(void);
  65 #define CLOCKS_PER_SEC 1000
  66 #define HZ CLOCKS_PER_SEC
  67 #endif
  68
  69 #define Too_Small_Time 2000
  70
  71 long            Begin_Time,
  72                 End_Time,
  73                 User_Time;
  74 float           Microseconds,
  75                 Dhrystones_Per_Second;
  76
  77 /* end of variables for time measurement */
  78
  79 void init(void);
  80
  81 Rec_Type malloc_1;
  82 Rec_Type malloc_2;
  83
  84 void main (void)
  85 /*****/
  86
  87   /* main program, corresponds to procedures        */
  88   /* Main and Proc_0 in the Ada version             */
  89 {
  90         One_Fifty       Int_1_Loc;
  91   REG   One_Fifty       Int_2_Loc;
  92         One_Fifty       Int_3_Loc;
  93   REG   char            Ch_Index;
  94         Enumeration     Enum_Loc;
  95         Str_30          Str_1_Loc;
  96         Str_30          Str_2_Loc;
  97   REG   int             Run_Index;
  98   REG   int             Number_Of_Runs;
  99
 100   /* Initializations */
 101
 102   init();
 103
 104   Next_Ptr_Glob = /*(Rec_Pointer) malloc (sizeof (Rec_Type))*/ &malloc_1;
 105   Ptr_Glob = /*(Rec_Pointer) malloc (sizeof (Rec_Type))*/ &malloc_2;
 106
 107   Ptr_Glob->Ptr_Comp                    = Next_Ptr_Glob;
 108   Ptr_Glob->Discr                       = Ident_1;
 109   Ptr_Glob->variant.var_1.Enum_Comp     = Ident_3;
 110   Ptr_Glob->variant.var_1.Int_Comp      = 40;
 111   strcpy (Ptr_Glob->variant.var_1.Str_Comp,
 112           "DHRYSTONE PROGRAM, SOME STRING");
 113   strcpy (Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");
 114
 115   Arr_2_Glob [8][7] = 10;
 116         /* Was missing in published program. Without this statement,    */
 117         /* Arr_2_Glob [8][7] would have an undefined value.             */
 118         /* Warning: With 16-Bit processors and Number_Of_Runs > 32000,  */
 119         /* overflow may occur for this array element.                   */
 120
 121   printf ("\n");
 122   printf ("Dhrystone Benchmark, Version 2.1 (Language: C)\n");
 123   printf ("\n");
 124   if (Reg)
 125   {
 126     printf ("Program compiled with 'register' attribute\n");
 127     printf ("\n");
 128   }
 129   else
 130   {
 131     printf ("Program compiled without 'register' attribute\n");
 132     printf ("\n");
 133   }
 134   printf ("Please give the number of runs through the benchmark: ");
 135   {
 136     int n;
 137     /*scanf ("%d", &n)*/;
 138     Number_Of_Runs = 25000/*n*/;
 139   }
 140   printf ("\n");
 141
 142   printf ("Execution starts, %d runs through Dhrystone\n", Number_Of_Runs);
 143
 144   /***************/
 145   /* Start timer */
 146   /***************/
 147
 148 #ifdef TIMES
 149   times (&time_info);
 150   Begin_Time = (long) time_info.tms_utime;
 151 #endif
 152 #ifdef TIME
 153   Begin_Time = time ( (long *) 0);
 154 #endif
 155 #if 1
 156   Begin_Time = clock();
 157 #endif
 158
 159   for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index)
 160   {
 161
 162     Proc_5();
 163     Proc_4();
 164       /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */
 165     Int_1_Loc = 2;
 166     Int_2_Loc = 3;
 167     strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
 168     Enum_Loc = Ident_2;
 169     Bool_Glob = ! Func_2 (Str_1_Loc, Str_2_Loc);
 170       /* Bool_Glob == 1 */
 171     while (Int_1_Loc < Int_2_Loc)  /* loop body executed once */
 172     {
 173       Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc;
 174         /* Int_3_Loc == 7 */
 175       Proc_7 (Int_1_Loc, Int_2_Loc, &Int_3_Loc);
 176         /* Int_3_Loc == 7 */
 177       Int_1_Loc += 1;
 178     } /* while */
 179       /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
 180     Proc_8 (Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc);
 181       /* Int_Glob == 5 */
 182     Proc_1 (Ptr_Glob);
 183     for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index)
 184                              /* loop body executed twice */
 185     {
 186       if (Enum_Loc == Func_1 (Ch_Index, 'C'))
 187           /* then, not executed */
 188         {
 189         Proc_6 (Ident_1, &Enum_Loc);
 190         strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING");
 191         Int_2_Loc = Run_Index;
 192         Int_Glob = Run_Index;
 193         }
 194     }
 195       /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
 196     Int_2_Loc = Int_2_Loc * Int_1_Loc;
 197     Int_1_Loc = Int_2_Loc / Int_3_Loc;
 198     Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc;
 199       /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */
 200     Proc_2 (&Int_1_Loc);
 201       /* Int_1_Loc == 5 */
 202
 203   } /* loop "for Run_Index" */
 204
 205   /**************/
 206   /* Stop timer */
 207   /**************/
 208
 209 #ifdef TIMES
 210   times (&time_info);
 211   End_Time = (long) time_info.tms_utime;
 212 #endif
 213 #ifdef TIME
 214   End_Time = time ( (long *) 0);
 215 #endif
 216 #if 1
 217   End_Time = clock();
 218 #endif
 219
 220   printf ("Execution ends\n");
 221   printf ("\n");
 222   printf ("Final values of the variables used in the benchmark:\n");
 223   printf ("\n");
 224   printf ("Int_Glob:            %d\n", Int_Glob);
 225   printf ("        should be:   %d\n", 5);
 226   printf ("Bool_Glob:           %d\n", Bool_Glob);
 227   printf ("        should be:   %d\n", 1);
 228   printf ("Ch_1_Glob:           %c\n", Ch_1_Glob);
 229   printf ("        should be:   %c\n", 'A');
 230   printf ("Ch_2_Glob:           %c\n", Ch_2_Glob);
 231   printf ("        should be:   %c\n", 'B');
 232   printf ("Arr_1_Glob[8]:       %d\n", Arr_1_Glob[8]);
 233   printf ("        should be:   %d\n", 7);
 234   printf ("Arr_2_Glob[8][7]:    %d\n", Arr_2_Glob[8][7]);
 235   printf ("        should be:   Number_Of_Runs + 10\n");
 236   printf ("Ptr_Glob->\n");
 237   printf ("  Ptr_Comp:          %d\n", (int) Ptr_Glob->Ptr_Comp);
 238   printf ("        should be:   (implementation-dependent)\n");
 239   printf ("  Discr:             %d\n", Ptr_Glob->Discr);
 240   printf ("        should be:   %d\n", 0);
 241   printf ("  Enum_Comp:         %d\n", Ptr_Glob->variant.var_1.Enum_Comp);
 242   printf ("        should be:   %d\n", 2);
 243   printf ("  Int_Comp:          %d\n", Ptr_Glob->variant.var_1.Int_Comp);
 244   printf ("        should be:   %d\n", 17);
 245   printf ("  Str_Comp:          %s\n", Ptr_Glob->variant.var_1.Str_Comp);
 246   printf ("        should be:   DHRYSTONE PROGRAM, SOME STRING\n");
 247   printf ("Next_Ptr_Glob->\n");
 248   printf ("  Ptr_Comp:          %d\n", (int) Next_Ptr_Glob->Ptr_Comp);
 249   printf ("        should be:   (implementation-dependent), same as above\n");
 250   printf ("  Discr:             %d\n", Next_Ptr_Glob->Discr);
 251   printf ("        should be:   %d\n", 0);
 252   printf ("  Enum_Comp:         %d\n", Next_Ptr_Glob->variant.var_1.Enum_Comp);
 253   printf ("        should be:   %d\n", 1);
 254   printf ("  Int_Comp:          %d\n", Next_Ptr_Glob->variant.var_1.Int_Comp);
 255   printf ("        should be:   %d\n", 18);
 256   printf ("  Str_Comp:          %s\n",
 257                                 Next_Ptr_Glob->variant.var_1.Str_Comp);
 258   printf ("        should be:   DHRYSTONE PROGRAM, SOME STRING\n");
 259   printf ("Int_1_Loc:           %d\n", Int_1_Loc);
 260   printf ("        should be:   %d\n", 5);
 261   printf ("Int_2_Loc:           %d\n", Int_2_Loc);
 262   printf ("        should be:   %d\n", 13);
 263   printf ("Int_3_Loc:           %d\n", Int_3_Loc);
 264   printf ("        should be:   %d\n", 7);
 265   printf ("Enum_Loc:            %d\n", Enum_Loc);
 266   printf ("        should be:   %d\n", 1);
 267   printf ("Str_1_Loc:           %s\n", Str_1_Loc);
 268   printf ("        should be:   DHRYSTONE PROGRAM, 1'ST STRING\n");
 269   printf ("Str_2_Loc:           %s\n", Str_2_Loc);
 270   printf ("        should be:   DHRYSTONE PROGRAM, 2'ND STRING\n");
 271   printf ("\n");
 272
 273   User_Time = End_Time - Begin_Time;
 274
 275   if (User_Time < Too_Small_Time)
 276   {
 277     printf ("Measured time too small to obtain meaningful results\n");
 278     printf ("Please increase number of runs\n");
 279     printf ("\n");
 280   }
 281   else
 282   {
 283 #ifdef TIME
 284     Microseconds = (float) User_Time * Mic_secs_Per_Second
 285                         / (float) Number_Of_Runs;
 286     Dhrystones_Per_Second = (float) Number_Of_Runs / (float) User_Time;
 287 #else
 288     Microseconds = (float) User_Time * Mic_secs_Per_Second
 289                         / ((float) HZ * ((float) Number_Of_Runs));
 290     Dhrystones_Per_Second = ((float) HZ * (float) Number_Of_Runs)
 291                         / (float) User_Time;
 292 #endif
 293     printf ("Microseconds for one run through Dhrystone: ");
 294     //printf ("%6.1f \n", Microseconds);
 295 printf ("%ld \n", (long int)Microseconds);
 296     printf ("Dhrystones per Second:                      ");
 297     //printf ("%6.1f \n", Dhrystones_Per_Second);
 298 printf ("%ld \n", (long int)Dhrystones_Per_Second);
 299     printf ("\n");
 300   }
 301
 302 }
 303
 304
 305 void Proc_1 (REG Rec_Pointer Ptr_Val_Par)
 306 /******************/
 307
 308
 309     /* executed once */
 310 {
 311   REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp;
 312                                         /* == Ptr_Glob_Next */
 313   /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp,    */
 314   /* corresponds to "rename" in Ada, "with" in Pascal           */
 315
 316   structassign (*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob);
 317   Ptr_Val_Par->variant.var_1.Int_Comp = 5;
 318   Next_Record->variant.var_1.Int_Comp
 319         = Ptr_Val_Par->variant.var_1.Int_Comp;
 320   Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp;
 321   Proc_3 (&Next_Record->Ptr_Comp);
 322     /* Ptr_Val_Par->Ptr_Comp->Ptr_Comp
 323                         == Ptr_Glob->Ptr_Comp */
 324   if (Next_Record->Discr == Ident_1)
 325     /* then, executed */
 326   {
 327     Next_Record->variant.var_1.Int_Comp = 6;
 328     Proc_6 (Ptr_Val_Par->variant.var_1.Enum_Comp,
 329            &Next_Record->variant.var_1.Enum_Comp);
 330     Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp;
 331     Proc_7 (Next_Record->variant.var_1.Int_Comp, 10,
 332            &Next_Record->variant.var_1.Int_Comp);
 333   }
 334   else /* not executed */
 335     structassign (*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp);
 336 } /* Proc_1 */
 337
 338
 339 void Proc_2 (One_Fifty *Int_Par_Ref)
 340 /******************/
 341     /* executed once */
 342     /* *Int_Par_Ref == 1, becomes 4 */
 343
 344 {
 345   One_Fifty  Int_Loc;
 346   Enumeration   Enum_Loc;
 347
 348   Int_Loc = *Int_Par_Ref + 10;
 349   do /* executed once */
 350     if (Ch_1_Glob == 'A')
 351       /* then, executed */
 352     {
 353       Int_Loc -= 1;
 354       *Int_Par_Ref = Int_Loc - Int_Glob;
 355       Enum_Loc = Ident_1;
 356     } /* if */
 357   while (Enum_Loc != Ident_1); /* true */
 358 } /* Proc_2 */
 359
 360
 361 void Proc_3 (Rec_Pointer *Ptr_Ref_Par)
 362 /******************/
 363     /* executed once */
 364     /* Ptr_Ref_Par becomes Ptr_Glob */
 365
 366 {
 367   if (Ptr_Glob != Null)
 368     /* then, executed */
 369     *Ptr_Ref_Par = Ptr_Glob->Ptr_Comp;
 370   Proc_7 (10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp);
 371 } /* Proc_3 */
 372
 373
 374 void Proc_4 (void) /* without parameters */
 375 /*******/
 376     /* executed once */
 377 {
 378   Boolean Bool_Loc;
 379   Bool_Loc = Ch_1_Glob == 'A';
 380   Bool_Glob = Bool_Loc | Bool_Glob;
 381   Ch_2_Glob = 'B';
 382 } /* Proc_4 */
 383
 384
 385 void Proc_5 (void) /* without parameters */
 386 /*******/
 387     /* executed once */
 388 {
 389   Ch_1_Glob = 'A';
 390   Bool_Glob = false;
 391 } /* Proc_5 */
 392
 393
 394         /* Procedure for the assignment of structures,          */
 395         /* if the C compiler doesn't support this feature       */
 396 #ifdef  NOSTRUCTASSIGN
 397 /*memcpy (d, s, l)
 398 register char   *d;
 399 register char   *s;
 400 register int    l;
 401 {
 402         while (l--) *d++ = *s++;
 403 }*/
 404 #endif
 405
 406