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File indexing completed on 2025-05-11 08:24:28 

0001 /*
0002  ****************************************************************************
0003  *
0004  *                   "DHRYSTONE" Benchmark Program
0005  *                   -----------------------------
0006  *                                                                            
0007  *  Version:    C, Version 2.1
0008  *                                                                            
0009  *  File:       dhry_1.c (part 2 of 3)
0010  *
0011  *  Date:       May 25, 1988
0012  *
0013  *  Author:     Reinhold P. Weicker
0014  *
0015  ****************************************************************************
0016  */
0017 
0018 #include "dhry.h"
0019 
0020 #include <inttypes.h>
0021 #include <stdlib.h>
0022 #include <string.h>
0023 
0024 /* Global Variables: */
0025 
0026 Rec_Pointer     Ptr_Glob,
0027                 Next_Ptr_Glob;
0028 int             Int_Glob;
0029 Boolean         Bool_Glob;
0030 char            Ch_1_Glob,
0031                 Ch_2_Glob;
0032 int             Arr_1_Glob [50];
0033 int             Arr_2_Glob [50] [50];
0034 
0035 #ifndef REG
0036         Boolean Reg = false;
0037 #define REG
0038         /* REG becomes defined as empty */
0039         /* i.e. no register variables   */
0040 #else
0041         Boolean Reg = true;
0042 #endif
0043 
0044 /* variables for time measurement: */
0045 
0046 #ifdef TIMES
0047 struct tms      time_info;
0048 extern  int     times ();
0049                 /* see library function "times" */
0050 #define Too_Small_Time 120
0051                 /* Measurements should last at least about 2 seconds */
0052 #endif
0053 #ifdef TIME
0054 #include <sys/time.h>
0055                 /* see library function "time"  */
0056 #define time(x) Time()
0057 static double Time(void)
0058 {
0059   struct timeval tv;
0060 
0061   gettimeofday(&tv, NULL);
0062   return (double)tv.tv_sec + (double)tv.tv_usec * 1e-6;
0063 }
0064 #define Too_Small_Time 2
0065                 /* Measurements should last at least 2 seconds */
0066 #endif
0067 
0068 double          Begin_Time,
0069                 End_Time,
0070                 User_Time;
0071 double          Microseconds,
0072                 Dhrystones_Per_Second;
0073 
0074 /* end of variables for time measurement */
0075 
0076 
0077 int main (int argc, char **argv)
0078 /*****/
0079 
0080   /* main program, corresponds to procedures        */
0081   /* Main and Proc_0 in the Ada version             */
0082 {
0083         One_Fifty       Int_1_Loc;
0084   REG   One_Fifty       Int_2_Loc;
0085         One_Fifty       Int_3_Loc;
0086   REG   char            Ch_Index;
0087         Enumeration     Enum_Loc;
0088         Str_30          Str_1_Loc;
0089         Str_30          Str_2_Loc;
0090   REG   int             Run_Index;
0091   REG   int             Number_Of_Runs;
0092 
0093   /* Initializations */
0094 
0095   Next_Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type));
0096   Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type));
0097 
0098   Ptr_Glob->Ptr_Comp                    = Next_Ptr_Glob;
0099   Ptr_Glob->Discr                       = Ident_1;
0100   Ptr_Glob->variant.var_1.Enum_Comp     = Ident_3;
0101   Ptr_Glob->variant.var_1.Int_Comp      = 40;
0102   strcpy (Ptr_Glob->variant.var_1.Str_Comp, 
0103           "DHRYSTONE PROGRAM, SOME STRING");
0104   strcpy (Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");
0105 
0106   Arr_2_Glob [8][7] = 10;
0107         /* Was missing in published program. Without this statement,    */
0108         /* Arr_2_Glob [8][7] would have an undefined value.             */
0109         /* Warning: With 16-Bit processors and Number_Of_Runs > 32000,  */
0110         /* overflow may occur for this array element.                   */
0111 
0112   printf ("\n");
0113   printf ("Dhrystone Benchmark, Version 2.1 (Language: C)\n");
0114   printf ("\n");
0115   if (Reg)
0116   {
0117     printf ("Program compiled with 'register' attribute\n");
0118     printf ("\n");
0119   }
0120   else
0121   {
0122     printf ("Program compiled without 'register' attribute\n");
0123     printf ("\n");
0124   }
0125 
0126   Number_Of_Runs = atoi(argv[1]);
0127   if (Number_Of_Runs < 1) {
0128     return 1;
0129   }
0130 
0131 execution_start:
0132   printf ("Execution starts, %d runs through Dhrystone\n", Number_Of_Runs);
0133 
0134 #ifdef __rtems__
0135   /* avoid used uninitialized warning */
0136   Int_1_Loc = 0;
0137   Int_2_Loc = 0;
0138 #endif
0139 
0140   /***************/
0141   /* Start timer */
0142   /***************/
0143  
0144 #ifdef TIMES
0145   times (&time_info);
0146   Begin_Time = (long) time_info.tms_utime;
0147 #endif
0148 #ifdef TIME
0149   Begin_Time = time ( (long *) 0);
0150 #endif
0151 
0152   for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index)
0153   {
0154 
0155     Proc_5();
0156     Proc_4();
0157       /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */
0158     Int_1_Loc = 2;
0159     Int_2_Loc = 3;
0160     strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
0161     Enum_Loc = Ident_2;
0162     Bool_Glob = ! Func_2 (Str_1_Loc, Str_2_Loc);
0163       /* Bool_Glob == 1 */
0164     while (Int_1_Loc < Int_2_Loc)  /* loop body executed once */
0165     {
0166       Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc;
0167         /* Int_3_Loc == 7 */
0168       Proc_7 (Int_1_Loc, Int_2_Loc, &Int_3_Loc);
0169         /* Int_3_Loc == 7 */
0170       Int_1_Loc += 1;
0171     } /* while */
0172       /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
0173     Proc_8 (Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc);
0174       /* Int_Glob == 5 */
0175     Proc_1 (Ptr_Glob);
0176     for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index)
0177                              /* loop body executed twice */
0178     {
0179       if (Enum_Loc == Func_1 (Ch_Index, 'C'))
0180           /* then, not executed */
0181         {
0182         Proc_6 (Ident_1, &Enum_Loc);
0183         strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING");
0184         Int_2_Loc = Run_Index;
0185         Int_Glob = Run_Index;
0186         }
0187     }
0188       /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
0189     Int_2_Loc = Int_2_Loc * Int_1_Loc;
0190     Int_1_Loc = Int_2_Loc / Int_3_Loc;
0191     Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc;
0192       /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */
0193     Proc_2 (&Int_1_Loc);
0194       /* Int_1_Loc == 5 */
0195 
0196   } /* loop "for Run_Index" */
0197 
0198   /**************/
0199   /* Stop timer */
0200   /**************/
0201   
0202 #ifdef TIMES
0203   times (&time_info);
0204   End_Time = (long) time_info.tms_utime;
0205 #endif
0206 #ifdef TIME
0207   End_Time = time ( (long *) 0);
0208 #endif
0209 
0210   printf ("Execution ends\n");
0211   printf ("\n");
0212   printf ("Final values of the variables used in the benchmark:\n");
0213   printf ("\n");
0214   printf ("Int_Glob:            %d\n", Int_Glob);
0215   printf ("        should be:   %d\n", 5);
0216   printf ("Bool_Glob:           %d\n", Bool_Glob);
0217   printf ("        should be:   %d\n", 1);
0218   printf ("Ch_1_Glob:           %c\n", Ch_1_Glob);
0219   printf ("        should be:   %c\n", 'A');
0220   printf ("Ch_2_Glob:           %c\n", Ch_2_Glob);
0221   printf ("        should be:   %c\n", 'B');
0222   printf ("Arr_1_Glob[8]:       %d\n", Arr_1_Glob[8]);
0223   printf ("        should be:   %d\n", 7);
0224   printf ("Arr_2_Glob[8][7]:    %d\n", Arr_2_Glob[8][7]);
0225   printf ("        should be:   Number_Of_Runs + 10\n");
0226   printf ("Ptr_Glob->\n");
0227   printf ("  Ptr_Comp:          %" PRIdPTR "\n", (intptr_t) Ptr_Glob->Ptr_Comp);
0228   printf ("        should be:   (implementation-dependent)\n");
0229   printf ("  Discr:             %d\n", Ptr_Glob->Discr);
0230   printf ("        should be:   %d\n", 0);
0231   printf ("  Enum_Comp:         %d\n", Ptr_Glob->variant.var_1.Enum_Comp);
0232   printf ("        should be:   %d\n", 2);
0233   printf ("  Int_Comp:          %d\n", Ptr_Glob->variant.var_1.Int_Comp);
0234   printf ("        should be:   %d\n", 17);
0235   printf ("  Str_Comp:          %s\n", Ptr_Glob->variant.var_1.Str_Comp);
0236   printf ("        should be:   DHRYSTONE PROGRAM, SOME STRING\n");
0237   printf ("Next_Ptr_Glob->\n");
0238   printf ("  Ptr_Comp:          %" PRIdPTR "\n", (intptr_t) Next_Ptr_Glob->Ptr_Comp);
0239   printf ("        should be:   (implementation-dependent), same as above\n");
0240   printf ("  Discr:             %d\n", Next_Ptr_Glob->Discr);
0241   printf ("        should be:   %d\n", 0);
0242   printf ("  Enum_Comp:         %d\n", Next_Ptr_Glob->variant.var_1.Enum_Comp);
0243   printf ("        should be:   %d\n", 1);
0244   printf ("  Int_Comp:          %d\n", Next_Ptr_Glob->variant.var_1.Int_Comp);
0245   printf ("        should be:   %d\n", 18);
0246   printf ("  Str_Comp:          %s\n",
0247                                 Next_Ptr_Glob->variant.var_1.Str_Comp);
0248   printf ("        should be:   DHRYSTONE PROGRAM, SOME STRING\n");
0249   printf ("Int_1_Loc:           %d\n", Int_1_Loc);
0250   printf ("        should be:   %d\n", 5);
0251   printf ("Int_2_Loc:           %d\n", Int_2_Loc);
0252   printf ("        should be:   %d\n", 13);
0253   printf ("Int_3_Loc:           %d\n", Int_3_Loc);
0254   printf ("        should be:   %d\n", 7);
0255   printf ("Enum_Loc:            %d\n", Enum_Loc);
0256   printf ("        should be:   %d\n", 1);
0257   printf ("Str_1_Loc:           %s\n", Str_1_Loc);
0258   printf ("        should be:   DHRYSTONE PROGRAM, 1'ST STRING\n");
0259   printf ("Str_2_Loc:           %s\n", Str_2_Loc);
0260   printf ("        should be:   DHRYSTONE PROGRAM, 2'ND STRING\n");
0261   printf ("\n");
0262 
0263   User_Time = End_Time - Begin_Time;
0264 
0265   if (User_Time < Too_Small_Time)
0266   {
0267     printf ("Measured time too small to obtain meaningful results\n");
0268     printf ("Please increase number of runs\n");
0269     printf ("\n");
0270     Number_Of_Runs *= 2;
0271     goto execution_start;
0272   }
0273   else
0274   {
0275 #ifdef TIME
0276     Microseconds = User_Time * Mic_secs_Per_Second / Number_Of_Runs;
0277     Dhrystones_Per_Second = Number_Of_Runs / User_Time;
0278 #else
0279     Microseconds = (float) User_Time * Mic_secs_Per_Second 
0280                         / ((float) HZ * ((float) Number_Of_Runs));
0281     Dhrystones_Per_Second = ((float) HZ * (float) Number_Of_Runs)
0282                         / (float) User_Time;
0283 #endif
0284     printf ("Microseconds for one run through Dhrystone: ");
0285     printf ("%6.1f \n", Microseconds);
0286     printf ("Dhrystones per Second:                      ");
0287     printf ("%6.1f \n", Dhrystones_Per_Second);
0288     printf ("DMIPS:                                      ");
0289     printf ("%5.2f \n", Dhrystones_Per_Second / 1757.0);
0290     printf ("\n");
0291   }
0292   
0293   return 0;
0294 }
0295 
0296 
0297 void Proc_1 (Ptr_Val_Par)
0298 /******************/
0299 
0300 REG Rec_Pointer Ptr_Val_Par;
0301     /* executed once */
0302 {
0303   REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp;  
0304                                         /* == Ptr_Glob_Next */
0305   /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp,    */
0306   /* corresponds to "rename" in Ada, "with" in Pascal           */
0307   
0308   structassign (*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob); 
0309   Ptr_Val_Par->variant.var_1.Int_Comp = 5;
0310   Next_Record->variant.var_1.Int_Comp 
0311         = Ptr_Val_Par->variant.var_1.Int_Comp;
0312   Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp;
0313   Proc_3 (&Next_Record->Ptr_Comp);
0314     /* Ptr_Val_Par->Ptr_Comp->Ptr_Comp 
0315                         == Ptr_Glob->Ptr_Comp */
0316   if (Next_Record->Discr == Ident_1)
0317     /* then, executed */
0318   {
0319     Next_Record->variant.var_1.Int_Comp = 6;
0320     Proc_6 (Ptr_Val_Par->variant.var_1.Enum_Comp, 
0321            &Next_Record->variant.var_1.Enum_Comp);
0322     Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp;
0323     Proc_7 (Next_Record->variant.var_1.Int_Comp, 10, 
0324            &Next_Record->variant.var_1.Int_Comp);
0325   }
0326   else /* not executed */
0327     structassign (*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp);
0328 } /* Proc_1 */
0329 
0330 
0331 void Proc_2 (Int_Par_Ref)
0332 /******************/
0333     /* executed once */
0334     /* *Int_Par_Ref == 1, becomes 4 */
0335 
0336 One_Fifty   *Int_Par_Ref;
0337 {
0338   One_Fifty  Int_Loc;  
0339   Enumeration   Enum_Loc;
0340 
0341   Int_Loc = *Int_Par_Ref + 10;
0342   do /* executed once */
0343     if (Ch_1_Glob == 'A')
0344       /* then, executed */
0345     {
0346       Int_Loc -= 1;
0347       *Int_Par_Ref = Int_Loc - Int_Glob;
0348       Enum_Loc = Ident_1;
0349     } /* if */
0350   while (Enum_Loc != Ident_1); /* true */
0351 } /* Proc_2 */
0352 
0353 
0354 void Proc_3 (Ptr_Ref_Par)
0355 /******************/
0356     /* executed once */
0357     /* Ptr_Ref_Par becomes Ptr_Glob */
0358 
0359 Rec_Pointer *Ptr_Ref_Par;
0360 
0361 {
0362   if (Ptr_Glob != Null)
0363     /* then, executed */
0364     *Ptr_Ref_Par = Ptr_Glob->Ptr_Comp;
0365   Proc_7 (10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp);
0366 } /* Proc_3 */
0367 
0368 
0369 void Proc_4 (void) /* without parameters */
0370 /*******/
0371     /* executed once */
0372 {
0373   Boolean Bool_Loc;
0374 
0375   Bool_Loc = Ch_1_Glob == 'A';
0376   Bool_Glob = Bool_Loc | Bool_Glob;
0377   Ch_2_Glob = 'B';
0378 } /* Proc_4 */
0379 
0380 
0381 void Proc_5 (void) /* without parameters */
0382 /*******/
0383     /* executed once */
0384 {
0385   Ch_1_Glob = 'A';
0386   Bool_Glob = false;
0387 } /* Proc_5 */
0388 
0389 
0390         /* Procedure for the assignment of structures,          */
0391         /* if the C compiler doesn't support this feature       */
0392 #ifdef  NOSTRUCTASSIGN
0393 memcpy (d, s, l)
0394 register char   *d;
0395 register char   *s;
0396 register int    l;
0397 {
0398         while (l--) *d++ = *s++;
0399 }
0400 #endif
0401 
0402
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