1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2015 Google, Inc
4  *
5  * Dhrystone is widely available in the public domain. A GPL license is
6  * chosen for U-Boot.
7  */
8 
9 /*****************************************************************************
10  *  The BYTE UNIX Benchmarks - Release 3
11  *          Module: dhry_1.c   SID: 3.4 5/15/91 19:30:21
12  *
13  *****************************************************************************
14  * Bug reports, patches, comments, suggestions should be sent to:
15  *
16  *	Ben Smith, Rick Grehan or Tom Yager
17  *	ben@bytepb.byte.com   rick_g@bytepb.byte.com   tyager@bytepb.byte.com
18  *
19  *****************************************************************************
20  *
21  * *** WARNING ****  With BYTE's modifications applied, results obtained with
22  *     *******       this version of the Dhrystone program may not be applicable
23  *                   to other versions.
24  *
25  *  Modification Log:
26  *  10/22/97 - code cleanup to remove ANSI C compiler warnings
27  *             Andy Kahn <kahn@zk3.dec.com>
28  *
29  *  Adapted from:
30  *
31  *                   "DHRYSTONE" Benchmark Program
32  *                   -----------------------------
33  *
34  *  Version:    C, Version 2.1
35  *
36  *  File:       dhry_1.c (part 2 of 3)
37  *
38  *  Date:       May 25, 1988
39  *
40  *  Author:     Reinhold P. Weicker
41  *
42  ***************************************************************************/
43 char SCCSid[] = "@(#) @(#)dhry_1.c:3.4 -- 5/15/91 19:30:21";
44 
45 #include <common.h>
46 #include <malloc.h>
47 
48 #include "dhry.h"
49 
50 unsigned long Run_Index;
51 
report(void)52 void report(void)
53 {
54 	printf("%ld loops\n", Run_Index);
55 }
56 
57 /* Global Variables: */
58 
59 Rec_Pointer     Ptr_Glob,
60                 Next_Ptr_Glob;
61 int             Int_Glob;
62 Boolean         Bool_Glob;
63 char            Ch_1_Glob,
64                 Ch_2_Glob;
65 int             Arr_1_Glob [50];
66 int             Arr_2_Glob [50] [50];
67 
68 Enumeration     Func_1 (Capital_Letter Ch_1_Par_Val, Capital_Letter Ch_2_Par_Val);
69   /* forward declaration necessary since Enumeration may not simply be int */
70 
71 #ifndef REG
72         Boolean Reg = false;
73 #define REG
74         /* REG becomes defined as empty */
75         /* i.e. no register variables   */
76 #else
77         Boolean Reg = true;
78 #endif
79 
80 /* variables for time measurement: */
81 
82 #ifdef TIMES
83 #define Too_Small_Time 120
84                 /* Measurements should last at least about 2 seconds */
85 #endif
86 #ifdef TIME
87 extern long     time();
88                 /* see library function "time"  */
89 #define Too_Small_Time 2
90                 /* Measurements should last at least 2 seconds */
91 #endif
92 
93 long            Begin_Time,
94                 End_Time,
95                 User_Time;
96 
97 /* end of variables for time measurement */
98 
99 void Proc_1 (REG Rec_Pointer Ptr_Val_Par);
100 void Proc_2 (One_Fifty   *Int_Par_Ref);
101 void Proc_3 (Rec_Pointer *Ptr_Ref_Par);
102 void Proc_4 (void);
103 void Proc_5 (void);
104 
105 
106 extern Boolean Func_2(Str_30, Str_30);
107 extern void Proc_6(Enumeration, Enumeration *);
108 extern void Proc_7(One_Fifty, One_Fifty, One_Fifty *);
109 extern void Proc_8(Arr_1_Dim, Arr_2_Dim, int, int);
110 
dhry(int Number_Of_Runs)111 void dhry(int Number_Of_Runs)
112   /* main program, corresponds to procedures        */
113   /* Main and Proc_0 in the Ada version             */
114 {
115         One_Fifty       Int_1_Loc;
116   REG   One_Fifty       Int_2_Loc;
117         One_Fifty       Int_3_Loc;
118   REG   char            Ch_Index;
119         Enumeration     Enum_Loc;
120         Str_30          Str_1_Loc;
121         Str_30          Str_2_Loc;
122 
123   /* Initializations */
124 
125   Next_Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type));
126   Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type));
127 
128   Ptr_Glob->Ptr_Comp                    = Next_Ptr_Glob;
129   Ptr_Glob->Discr                       = Ident_1;
130   Ptr_Glob->variant.var_1.Enum_Comp     = Ident_3;
131   Ptr_Glob->variant.var_1.Int_Comp      = 40;
132   strcpy (Ptr_Glob->variant.var_1.Str_Comp,
133           "DHRYSTONE PROGRAM, SOME STRING");
134   strcpy (Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");
135 
136   Arr_2_Glob [8][7] = 10;
137         /* Was missing in published program. Without this statement,    */
138         /* Arr_2_Glob [8][7] would have an undefined value.             */
139         /* Warning: With 16-Bit processors and Number_Of_Runs > 32000,  */
140         /* overflow may occur for this array element.                   */
141 
142 #ifdef PRATTLE
143   printf ("\n");
144   printf ("Dhrystone Benchmark, Version 2.1 (Language: C)\n");
145   printf ("\n");
146   if (Reg)
147   {
148     printf ("Program compiled with 'register' attribute\n");
149     printf ("\n");
150   }
151   else
152   {
153     printf ("Program compiled without 'register' attribute\n");
154     printf ("\n");
155   }
156   printf ("Please give the number of runs through the benchmark: ");
157   {
158     int n;
159     scanf ("%d", &n);
160     Number_Of_Runs = n;
161   }
162   printf ("\n");
163 
164   printf ("Execution starts, %d runs through Dhrystone\n", Number_Of_Runs);
165 #endif /* PRATTLE */
166 
167   Run_Index = 0;
168 
169   /***************/
170   /* Start timer */
171   /***************/
172 
173 #ifdef SELF_TIMED
174 #ifdef TIMES
175   times (&time_info);
176   Begin_Time = (long) time_info.tms_utime;
177 #endif
178 #ifdef TIME
179   Begin_Time = time ( (long *) 0);
180 #endif
181 #endif /* SELF_TIMED */
182 
183   for (Run_Index = 1; Run_Index < Number_Of_Runs; ++Run_Index)
184   {
185 
186     Proc_5();
187     Proc_4();
188       /* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */
189     Int_1_Loc = 2;
190     Int_2_Loc = 3;
191     strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
192     Enum_Loc = Ident_2;
193     Bool_Glob = ! Func_2 (Str_1_Loc, Str_2_Loc);
194       /* Bool_Glob == 1 */
195     while (Int_1_Loc < Int_2_Loc)  /* loop body executed once */
196     {
197       Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc;
198         /* Int_3_Loc == 7 */
199       Proc_7 (Int_1_Loc, Int_2_Loc, &Int_3_Loc);
200         /* Int_3_Loc == 7 */
201       Int_1_Loc += 1;
202     } /* while */
203       /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
204     Proc_8 (Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc);
205       /* Int_Glob == 5 */
206     Proc_1 (Ptr_Glob);
207     for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index)
208                              /* loop body executed twice */
209     {
210       if (Enum_Loc == Func_1 (Ch_Index, 'C'))
211           /* then, not executed */
212         {
213         Proc_6 (Ident_1, &Enum_Loc);
214         strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING");
215         Int_2_Loc = Run_Index;
216         Int_Glob = Run_Index;
217         }
218     }
219       /* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
220     Int_2_Loc = Int_2_Loc * Int_1_Loc;
221     Int_1_Loc = Int_2_Loc / Int_3_Loc;
222     Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc;
223       /* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */
224     Proc_2 (&Int_1_Loc);
225       /* Int_1_Loc == 5 */
226 
227   } /* loop "for Run_Index" */
228 
229   /**************/
230   /* Stop timer */
231   /**************/
232 #ifdef SELF_TIMED
233 #ifdef TIMES
234   times (&time_info);
235   End_Time = (long) time_info.tms_utime;
236 #endif
237 #ifdef TIME
238   End_Time = time ( (long *) 0);
239 #endif
240 #endif /* SELF_TIMED */
241 
242   /* BYTE version never executes this stuff */
243 #ifdef SELF_TIMED
244   printf ("Execution ends\n");
245   printf ("\n");
246   printf ("Final values of the variables used in the benchmark:\n");
247   printf ("\n");
248   printf ("Int_Glob:            %d\n", Int_Glob);
249   printf ("        should be:   %d\n", 5);
250   printf ("Bool_Glob:           %d\n", Bool_Glob);
251   printf ("        should be:   %d\n", 1);
252   printf ("Ch_1_Glob:           %c\n", Ch_1_Glob);
253   printf ("        should be:   %c\n", 'A');
254   printf ("Ch_2_Glob:           %c\n", Ch_2_Glob);
255   printf ("        should be:   %c\n", 'B');
256   printf ("Arr_1_Glob[8]:       %d\n", Arr_1_Glob[8]);
257   printf ("        should be:   %d\n", 7);
258   printf ("Arr_2_Glob[8][7]:    %d\n", Arr_2_Glob[8][7]);
259   printf ("        should be:   Number_Of_Runs + 10\n");
260   printf ("Ptr_Glob->\n");
261   printf ("  Ptr_Comp:          %d\n", (int) Ptr_Glob->Ptr_Comp);
262   printf ("        should be:   (implementation-dependent)\n");
263   printf ("  Discr:             %d\n", Ptr_Glob->Discr);
264   printf ("        should be:   %d\n", 0);
265   printf ("  Enum_Comp:         %d\n", Ptr_Glob->variant.var_1.Enum_Comp);
266   printf ("        should be:   %d\n", 2);
267   printf ("  Int_Comp:          %d\n", Ptr_Glob->variant.var_1.Int_Comp);
268   printf ("        should be:   %d\n", 17);
269   printf ("  Str_Comp:          %s\n", Ptr_Glob->variant.var_1.Str_Comp);
270   printf ("        should be:   DHRYSTONE PROGRAM, SOME STRING\n");
271   printf ("Next_Ptr_Glob->\n");
272   printf ("  Ptr_Comp:          %d\n", (int) Next_Ptr_Glob->Ptr_Comp);
273   printf ("        should be:   (implementation-dependent), same as above\n");
274   printf ("  Discr:             %d\n", Next_Ptr_Glob->Discr);
275   printf ("        should be:   %d\n", 0);
276   printf ("  Enum_Comp:         %d\n", Next_Ptr_Glob->variant.var_1.Enum_Comp);
277   printf ("        should be:   %d\n", 1);
278   printf ("  Int_Comp:          %d\n", Next_Ptr_Glob->variant.var_1.Int_Comp);
279   printf ("        should be:   %d\n", 18);
280   printf ("  Str_Comp:          %s\n",
281                                 Next_Ptr_Glob->variant.var_1.Str_Comp);
282   printf ("        should be:   DHRYSTONE PROGRAM, SOME STRING\n");
283   printf ("Int_1_Loc:           %d\n", Int_1_Loc);
284   printf ("        should be:   %d\n", 5);
285   printf ("Int_2_Loc:           %d\n", Int_2_Loc);
286   printf ("        should be:   %d\n", 13);
287   printf ("Int_3_Loc:           %d\n", Int_3_Loc);
288   printf ("        should be:   %d\n", 7);
289   printf ("Enum_Loc:            %d\n", Enum_Loc);
290   printf ("        should be:   %d\n", 1);
291   printf ("Str_1_Loc:           %s\n", Str_1_Loc);
292   printf ("        should be:   DHRYSTONE PROGRAM, 1'ST STRING\n");
293   printf ("Str_2_Loc:           %s\n", Str_2_Loc);
294   printf ("        should be:   DHRYSTONE PROGRAM, 2'ND STRING\n");
295   printf ("\n");
296 
297   User_Time = End_Time - Begin_Time;
298 
299   if (User_Time < Too_Small_Time)
300   {
301     printf ("Measured time too small to obtain meaningful results\n");
302     printf ("Please increase number of runs\n");
303     printf ("\n");
304   }
305   else
306   {
307 #ifdef TIME
308     Microseconds = (float) User_Time * Mic_secs_Per_Second
309                         / (float) Number_Of_Runs;
310     Dhrystones_Per_Second = (float) Number_Of_Runs / (float) User_Time;
311 #else
312     Microseconds = (float) User_Time * Mic_secs_Per_Second
313                         / ((float) HZ * ((float) Number_Of_Runs));
314     Dhrystones_Per_Second = ((float) HZ * (float) Number_Of_Runs)
315                         / (float) User_Time;
316 #endif
317     printf ("Microseconds for one run through Dhrystone: ");
318     printf ("%6.1f \n", Microseconds);
319     printf ("Dhrystones per Second:                      ");
320     printf ("%6.1f \n", Dhrystones_Per_Second);
321     printf ("\n");
322   }
323 #endif /* SELF_TIMED */
324 }
325 
326 
Proc_1(REG Rec_Pointer Ptr_Val_Par)327 void Proc_1 (REG Rec_Pointer Ptr_Val_Par)
328     /* executed once */
329 {
330   REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp;
331                                         /* == Ptr_Glob_Next */
332   /* Local variable, initialized with Ptr_Val_Par->Ptr_Comp,    */
333   /* corresponds to "rename" in Ada, "with" in Pascal           */
334 
335   structassign (*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob);
336   Ptr_Val_Par->variant.var_1.Int_Comp = 5;
337   Next_Record->variant.var_1.Int_Comp
338         = Ptr_Val_Par->variant.var_1.Int_Comp;
339   Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp;
340   Proc_3 (&Next_Record->Ptr_Comp);
341     /* Ptr_Val_Par->Ptr_Comp->Ptr_Comp
342                         == Ptr_Glob->Ptr_Comp */
343   if (Next_Record->Discr == Ident_1)
344     /* then, executed */
345   {
346     Next_Record->variant.var_1.Int_Comp = 6;
347     Proc_6 (Ptr_Val_Par->variant.var_1.Enum_Comp,
348            &Next_Record->variant.var_1.Enum_Comp);
349     Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp;
350     Proc_7 (Next_Record->variant.var_1.Int_Comp, 10,
351            &Next_Record->variant.var_1.Int_Comp);
352   }
353   else /* not executed */
354     structassign (*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp);
355 } /* Proc_1 */
356 
357 
Proc_2(One_Fifty * Int_Par_Ref)358 void Proc_2 (One_Fifty   *Int_Par_Ref)
359     /* executed once */
360     /* *Int_Par_Ref == 1, becomes 4 */
361 {
362   One_Fifty  Int_Loc;
363   Enumeration   Enum_Loc;
364 
365   Enum_Loc = 0;
366 
367   Int_Loc = *Int_Par_Ref + 10;
368   do /* executed once */
369     if (Ch_1_Glob == 'A')
370       /* then, executed */
371     {
372       Int_Loc -= 1;
373       *Int_Par_Ref = Int_Loc - Int_Glob;
374       Enum_Loc = Ident_1;
375     } /* if */
376   while (Enum_Loc != Ident_1); /* true */
377 } /* Proc_2 */
378 
379 
Proc_3(Rec_Pointer * Ptr_Ref_Par)380 void Proc_3 (Rec_Pointer *Ptr_Ref_Par)
381     /* executed once */
382     /* Ptr_Ref_Par becomes Ptr_Glob */
383 {
384   if (Ptr_Glob != Null)
385     /* then, executed */
386     *Ptr_Ref_Par = Ptr_Glob->Ptr_Comp;
387   Proc_7 (10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp);
388 } /* Proc_3 */
389 
390 
Proc_4(void)391 void Proc_4 (void) /* without parameters */
392     /* executed once */
393 {
394   Boolean Bool_Loc;
395 
396   Bool_Loc = Ch_1_Glob == 'A';
397   Bool_Glob = Bool_Loc | Bool_Glob;
398   Ch_2_Glob = 'B';
399 } /* Proc_4 */
400 
Proc_5(void)401 void Proc_5 (void) /* without parameters */
402 /*******/
403     /* executed once */
404 {
405   Ch_1_Glob = 'A';
406   Bool_Glob = false;
407 } /* Proc_5 */
408 
409 
410         /* Procedure for the assignment of structures,          */
411         /* if the C compiler doesn't support this feature       */
412 #ifdef  NOSTRUCTASSIGN
memcpy(d,s,l)413 memcpy (d, s, l)
414 register char   *d;
415 register char   *s;
416 register int    l;
417 {
418         while (l--) *d++ = *s++;
419 }
420 #endif
421