533 lines
16 KiB
C++
533 lines
16 KiB
C++
// SPDX-FileCopyrightText: 1988 Reinhold P. Weicker
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// SPDX-FileCopyrightText: Gareth Halfacree
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// SPDX-FileCopyrightText: Ken Boak
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// SPDX-FileCopyrightText: 2018 Limor Fried for Adafruit Industries
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//
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// SPDX-License-Identifier: MIT
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/* Dhrystone benchmark, modified for use with Arduinos and compatibles.
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* Based on work by Ken Boak.
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* Further modified to allow execution on an ATmega328-based board.
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* Modified by Gareth Halfacree <gareth@halfacree.co.uk>
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*/
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/*
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*************************************************************************
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*
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* "DHRYSTONE" Benchmark Program
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* -----------------------------
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*
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* Version: C, Version 2.1
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*
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* File: dhry_1.c (part 2 of 3)
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*
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* Date: May 25, 1988
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*
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* Author: Reinhold P. Weicker
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*
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*************************************************************************
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*/
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#include "dhry.h"
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/* Global Variables: */
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Rec_Pointer Ptr_Glob,
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Next_Ptr_Glob;
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int Int_Glob;
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Boolean Bool_Glob;
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char Ch_1_Glob,
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Ch_2_Glob;
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int Arr_1_Glob [25]; /* <-- changed from 50 */
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int Arr_2_Glob [25] [25]; /* <-- changed from 50 */
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char Reg_Define[] = "Register option selected.";
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#ifndef ROPT
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#define REG
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/* REG becomes defined as empty */
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/* i.e. no register variables */
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#else
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#define REG register
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#endif
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/* variables for time measurement: */
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#define Too_Small_Time 2000000
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/* Measurements should last at least 2 seconds */
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uint32_t Begin_Time,
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End_Time,
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User_Time;
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double Microseconds,
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Dhrystones_Per_Second,
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Vax_Mips;
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/* end of variables for time measurement */
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void Proc_1( REG Rec_Pointer Ptr_Val_Par );
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void Proc_2( One_Fifty * Int_Par_Ref );
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void Proc_3( Rec_Pointer * Ptr_Ref_Par );
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void Proc_4( void );
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void Proc_5( void );
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/* main program, corresponds to procedures */
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/* Main and Proc_0 in the Ada version */
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void setup() {
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One_Fifty Int_1_Loc;
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REG One_Fifty Int_2_Loc;
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One_Fifty Int_3_Loc;
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REG char Ch_Index;
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Enumeration Enum_Loc;
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Str_30 Str_1_Loc;
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Str_30 Str_2_Loc;
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REG long Run_Index;
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REG long Number_Of_Runs;
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/* Initializations */
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Serial.begin(115200);
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while (!Serial) {
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delay(10); // wait for serial port to connect
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}
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Serial.println(F("Dhrystone Benchmark, Version 2.1 (Language: C)"));
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Next_Ptr_Glob = (Rec_Pointer)malloc (sizeof (Rec_Type));
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Ptr_Glob = (Rec_Pointer)malloc (sizeof (Rec_Type));
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Ptr_Glob->Ptr_Comp = Next_Ptr_Glob;
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Ptr_Glob->Discr = Ident_1;
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Ptr_Glob->variant.var_1.Enum_Comp = Ident_3;
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Ptr_Glob->variant.var_1.Int_Comp = 40;
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strcpy (Ptr_Glob->variant.var_1.Str_Comp,
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"DHRYSTONE PROGRAM, SOME STRING");
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strcpy (Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");
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Arr_2_Glob [8][7] = 10;
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/* Was missing in published program. Without this statement, */
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/* Arr_2_Glob [8][7] would have an undefined value. */
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/* Warning: With 16-Bit processors and Number_Of_Runs > 32000, */
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/* overflow may occur for this array element. */
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Number_Of_Runs = 1000000;
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Serial.print(F("Execution starts, "));
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Serial.print(Number_Of_Runs);
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Serial.println(F(" runs through Dhrystone"));
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Serial.println();
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/***************/
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/* Start timer */
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/***************/
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Begin_Time = micros();
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for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index)
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{
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Proc_5();
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Proc_4();
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/* Ch_1_Glob == 'A', Ch_2_Glob == 'B', Bool_Glob == true */
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Int_1_Loc = 2;
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Int_2_Loc = 3;
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strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
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Enum_Loc = Ident_2;
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Bool_Glob = ! Func_2 (Str_1_Loc, Str_2_Loc);
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/* Bool_Glob == 1 */
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while (Int_1_Loc < Int_2_Loc) /* loop body executed once */
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{
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Int_3_Loc = 5 * Int_1_Loc - Int_2_Loc;
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/* Int_3_Loc == 7 */
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Proc_7 (Int_1_Loc, Int_2_Loc, &Int_3_Loc);
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/* Int_3_Loc == 7 */
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Int_1_Loc += 1;
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} /* while */
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/* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
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Proc_8 (Arr_1_Glob, Arr_2_Glob, Int_1_Loc, Int_3_Loc);
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/* Int_Glob == 5 */
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Proc_1 (Ptr_Glob);
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for (Ch_Index = 'A'; Ch_Index <= Ch_2_Glob; ++Ch_Index)
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/* loop body executed twice */
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{
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if (Enum_Loc == Func_1 (Ch_Index, 'C'))
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/* then, not executed */
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{
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Proc_6 (Ident_1, &Enum_Loc);
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strcpy (Str_2_Loc, "DHRYSTONE PROGRAM, 3'RD STRING");
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Int_2_Loc = Run_Index;
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Int_Glob = Run_Index;
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}
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}
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/* Int_1_Loc == 3, Int_2_Loc == 3, Int_3_Loc == 7 */
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Int_2_Loc = Int_2_Loc * Int_1_Loc;
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Int_1_Loc = Int_2_Loc / Int_3_Loc;
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Int_2_Loc = 7 * (Int_2_Loc - Int_3_Loc) - Int_1_Loc;
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/* Int_1_Loc == 1, Int_2_Loc == 13, Int_3_Loc == 7 */
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Proc_2 (&Int_1_Loc);
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/* Int_1_Loc == 5 */
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} /* loop "for Run_Index" */
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/**************/
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/* Stop timer */
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/**************/
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End_Time = micros();
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User_Time = End_Time - Begin_Time;
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Serial.println(F("Execution ends"));
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/*
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printf ("\r\n");
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printf ("Final values of the variables used in the benchmark:\r\n");
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printf ("\r\n");
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printf ("Int_Glob: %d\r\n", Int_Glob);
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printf (" should be: %d\r\n", 5);
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printf ("Bool_Glob: %d\r\n", Bool_Glob);
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printf (" should be: %d\r\n", 1);
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printf ("Ch_1_Glob: %c\r\n", Ch_1_Glob);
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printf (" should be: %c\r\n", 'A');
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printf ("Ch_2_Glob: %c\r\n", Ch_2_Glob);
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printf (" should be: %c\r\n", 'B');
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printf ("Arr_1_Glob[8]: %d\r\n", Arr_1_Glob[8]);
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printf (" should be: %d\r\n", 7);
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printf ("Arr_2_Glob[8][7]: %d\r\n", Arr_2_Glob[8][7]);
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printf (" should be: Number_Of_Runs + 10\r\n");
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printf ("Ptr_Glob->\r\n");
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printf (" Ptr_Comp: %d\r\n", (int) Ptr_Glob->Ptr_Comp);
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printf (" should be: (implementation-dependent)\r\n");
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printf (" Discr: %d\r\n", Ptr_Glob->Discr);
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printf (" should be: %d\r\n", 0);
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printf (" Enum_Comp: %d\r\n", Ptr_Glob->variant.var_1.Enum_Comp);
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printf (" should be: %d\r\n", 2);
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printf (" Int_Comp: %d\r\n", Ptr_Glob->variant.var_1.Int_Comp);
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printf (" should be: %d\r\n", 17);
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printf (" Str_Comp: %s\r\n", Ptr_Glob->variant.var_1.Str_Comp);
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printf (" should be: DHRYSTONE PROGRAM, SOME STRING\r\n");
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printf ("Next_Ptr_Glob->\r\n");
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printf (" Ptr_Comp: %d\r\n", (int) Next_Ptr_Glob->Ptr_Comp);
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printf (" should be: (implementation-dependent), same as above\r\n");
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printf (" Discr: %d\r\n", Next_Ptr_Glob->Discr);
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printf (" should be: %d\r\n", 0);
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printf (" Enum_Comp: %d\r\n", Next_Ptr_Glob->variant.var_1.Enum_Comp);
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printf (" should be: %d\r\n", 1);
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printf (" Int_Comp: %d\r\n", Next_Ptr_Glob->variant.var_1.Int_Comp);
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printf (" should be: %d\r\n", 18);
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printf (" Str_Comp: %s\r\n", Next_Ptr_Glob->variant.var_1.Str_Comp);
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printf (" should be: DHRYSTONE PROGRAM, SOME STRING\r\n");
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printf ("Int_1_Loc: %d\r\n", Int_1_Loc);
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printf (" should be: %d\r\n", 5);
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printf ("Int_2_Loc: %d\r\n", Int_2_Loc);
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printf (" should be: %d\r\n", 13);
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printf ("Int_3_Loc: %d\r\n", Int_3_Loc);
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printf (" should be: %d\r\n", 7);
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printf ("Enum_Loc: %d\r\n", Enum_Loc);
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printf (" should be: %d\r\n", 1);
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printf ("Str_1_Loc: %s\r\n", Str_1_Loc);
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printf (" should be: DHRYSTONE PROGRAM, 1'ST STRING\r\n");
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printf ("Str_2_Loc: %s\r\n", Str_2_Loc);
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printf (" should be: DHRYSTONE PROGRAM, 2'ND STRING\r\n");
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printf ("\r\n");
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*/
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if (User_Time < Too_Small_Time)
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{
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Serial.println(F("Measured time too small to obtain meaningful results"));
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Serial.println(F("Please increase number of runs"));
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Serial.println();
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}
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else
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{
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Microseconds = (double) User_Time / (double) Number_Of_Runs;
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Dhrystones_Per_Second = (double) Number_Of_Runs / ((double)User_Time/1000000.0);
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Vax_Mips = Dhrystones_Per_Second / 1757.0;
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}
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/*
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#ifdef ROPT
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printf ("Register option selected? YES\r\n");
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#else
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printf ("Register option selected? NO\r\n");
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strcpy(Reg_Define, "Register option not selected.");
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#endif
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*/
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Serial.print(F("Microseconds for one run through Dhrystone: "));
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Serial.println(Microseconds);
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Serial.print(F("Dhrystones per Second: "));
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Serial.println(Dhrystones_Per_Second);
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Serial.print(F("VAX MIPS rating = "));
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Serial.println(Vax_Mips);
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//}
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}
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void loop() {
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}
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void Proc_1( REG Rec_Pointer Ptr_Val_Par )
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/******************/
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/* executed once */
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{
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REG Rec_Pointer Next_Record = Ptr_Val_Par->Ptr_Comp;
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/* == Ptr_Glob_Next */
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/* Local variable, initialized with Ptr_Val_Par->Ptr_Comp, */
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/* corresponds to "rename" in Ada, "with" in Pascal */
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structassign (*Ptr_Val_Par->Ptr_Comp, *Ptr_Glob);
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Ptr_Val_Par->variant.var_1.Int_Comp = 5;
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Next_Record->variant.var_1.Int_Comp
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= Ptr_Val_Par->variant.var_1.Int_Comp;
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Next_Record->Ptr_Comp = Ptr_Val_Par->Ptr_Comp;
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Proc_3 (&Next_Record->Ptr_Comp);
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/* Ptr_Val_Par->Ptr_Comp->Ptr_Comp
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== Ptr_Glob->Ptr_Comp */
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if (Next_Record->Discr == Ident_1)
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/* then, executed */
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{
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Next_Record->variant.var_1.Int_Comp = 6;
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Proc_6 (Ptr_Val_Par->variant.var_1.Enum_Comp,
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&Next_Record->variant.var_1.Enum_Comp);
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Next_Record->Ptr_Comp = Ptr_Glob->Ptr_Comp;
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Proc_7 (Next_Record->variant.var_1.Int_Comp, 10,
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&Next_Record->variant.var_1.Int_Comp);
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}
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else /* not executed */
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structassign (*Ptr_Val_Par, *Ptr_Val_Par->Ptr_Comp);
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} /* Proc_1 */
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void Proc_2( One_Fifty * Int_Par_Ref )
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/******************/
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/* executed once */
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/* *Int_Par_Ref == 1, becomes 4 */
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{
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One_Fifty Int_Loc;
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Enumeration Enum_Loc;
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Int_Loc = *Int_Par_Ref + 10;
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do /* executed once */
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if (Ch_1_Glob == 'A')
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/* then, executed */
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{
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Int_Loc -= 1;
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*Int_Par_Ref = Int_Loc - Int_Glob;
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Enum_Loc = Ident_1;
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} /* if */
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while (Enum_Loc != Ident_1); /* true */
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} /* Proc_2 */
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void Proc_3( Rec_Pointer * Ptr_Ref_Par )
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/******************/
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/* executed once */
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/* Ptr_Ref_Par becomes Ptr_Glob */
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{
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if (Ptr_Glob != Null)
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/* then, executed */
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*Ptr_Ref_Par = Ptr_Glob->Ptr_Comp;
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Proc_7 (10, Int_Glob, &Ptr_Glob->variant.var_1.Int_Comp);
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} /* Proc_3 */
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void Proc_4( void ) /* without parameters */
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/*******/
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/* executed once */
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{
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Boolean Bool_Loc;
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Bool_Loc = Ch_1_Glob == 'A';
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Bool_Glob = Bool_Loc | Bool_Glob;
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Ch_2_Glob = 'B';
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} /* Proc_4 */
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void Proc_5( void ) /* without parameters */
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/*******/
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/* executed once */
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{
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Ch_1_Glob = 'A';
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Bool_Glob = false;
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} /* Proc_5 */
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/* Procedure for the assignment of structures, */
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/* if the C compiler doesn't support this feature */
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#ifdef NOSTRUCTASSIGN
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memcpy (d, s, l)
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register char *d;
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register char *s;
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register int l;
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{
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while (l--) *d++ = *s++;
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}
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#endif
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/*
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*************************************************************************
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*
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* "DHRYSTONE" Benchmark Program
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* -----------------------------
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*
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* Version: C, Version 2.1
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*
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* File: dhry_2.c (part 3 of 3)
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*
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* Date: May 25, 1988
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*
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* Author: Reinhold P. Weicker
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*
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*************************************************************************
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*/
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Boolean Func_3( Enumeration Enum_Par_Val );
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void Proc_6( Enumeration Enum_Val_Par, Enumeration * Enum_Ref_Par )
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/*********************************/
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/* executed once */
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/* Enum_Val_Par == Ident_3, Enum_Ref_Par becomes Ident_2 */
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{
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*Enum_Ref_Par = Enum_Val_Par;
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if (! Func_3 (Enum_Val_Par))
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/* then, not executed */
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*Enum_Ref_Par = Ident_4;
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switch (Enum_Val_Par)
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{
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case Ident_1:
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*Enum_Ref_Par = Ident_1;
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break;
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case Ident_2:
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if (Int_Glob > 100)
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/* then */
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*Enum_Ref_Par = Ident_1;
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else *Enum_Ref_Par = Ident_4;
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break;
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case Ident_3: /* executed */
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*Enum_Ref_Par = Ident_2;
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break;
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case Ident_4: break;
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case Ident_5:
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*Enum_Ref_Par = Ident_3;
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break;
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} /* switch */
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} /* Proc_6 */
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void Proc_7( One_Fifty Int_1_Par_Val, One_Fifty Int_2_Par_Val,
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One_Fifty * Int_Par_Ref )
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/**********************************************/
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/* executed three times */
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/* first call: Int_1_Par_Val == 2, Int_2_Par_Val == 3, */
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/* Int_Par_Ref becomes 7 */
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/* second call: Int_1_Par_Val == 10, Int_2_Par_Val == 5, */
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/* Int_Par_Ref becomes 17 */
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/* third call: Int_1_Par_Val == 6, Int_2_Par_Val == 10, */
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/* Int_Par_Ref becomes 18 */
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{
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One_Fifty Int_Loc;
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Int_Loc = Int_1_Par_Val + 2;
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*Int_Par_Ref = Int_2_Par_Val + Int_Loc;
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} /* Proc_7 */
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void Proc_8( Arr_1_Dim Arr_1_Par_Ref, Arr_2_Dim Arr_2_Par_Ref,
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int Int_1_Par_Val, int Int_2_Par_Val )
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/*********************************************************************/
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/* executed once */
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/* Int_Par_Val_1 == 3 */
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/* Int_Par_Val_2 == 7 */
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{
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REG One_Fifty Int_Index;
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REG One_Fifty Int_Loc;
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Int_Loc = Int_1_Par_Val + 5;
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Arr_1_Par_Ref [Int_Loc] = Int_2_Par_Val;
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Arr_1_Par_Ref [Int_Loc+1] = Arr_1_Par_Ref [Int_Loc];
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Arr_1_Par_Ref [Int_Loc+15] = Int_Loc;
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for (Int_Index = Int_Loc; Int_Index <= Int_Loc+1; ++Int_Index)
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Arr_2_Par_Ref [Int_Loc] [Int_Index] = Int_Loc;
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Arr_2_Par_Ref [Int_Loc] [Int_Loc-1] += 1;
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Arr_2_Par_Ref [Int_Loc+10] [Int_Loc] = Arr_1_Par_Ref [Int_Loc];
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Int_Glob = 5;
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} /* Proc_8 */
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Enumeration Func_1 ( Capital_Letter Ch_1_Par_Val, Capital_Letter Ch_2_Par_Val )
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/*************************************************/
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/* executed three times */
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/* first call: Ch_1_Par_Val == 'H', Ch_2_Par_Val == 'R' */
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/* second call: Ch_1_Par_Val == 'A', Ch_2_Par_Val == 'C' */
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/* third call: Ch_1_Par_Val == 'B', Ch_2_Par_Val == 'C' */
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{
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Capital_Letter Ch_1_Loc;
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Capital_Letter Ch_2_Loc;
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Ch_1_Loc = Ch_1_Par_Val;
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Ch_2_Loc = Ch_1_Loc;
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if (Ch_2_Loc != Ch_2_Par_Val)
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/* then, executed */
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return (Ident_1);
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else /* not executed */
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{
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|
Ch_1_Glob = Ch_1_Loc;
|
|
return (Ident_2);
|
|
}
|
|
} /* Func_1 */
|
|
|
|
|
|
Boolean Func_2( Str_30 Str_1_Par_Ref, Str_30 Str_2_Par_Ref )
|
|
/*************************************************/
|
|
/* executed once */
|
|
/* Str_1_Par_Ref == "DHRYSTONE PROGRAM, 1'ST STRING" */
|
|
/* Str_2_Par_Ref == "DHRYSTONE PROGRAM, 2'ND STRING" */
|
|
{
|
|
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 */
|
|
|
|
|
|
Boolean Func_3( Enumeration Enum_Par_Val )
|
|
/***************************/
|
|
/* executed once */
|
|
/* Enum_Par_Val == Ident_3 */
|
|
{
|
|
Enumeration Enum_Loc;
|
|
|
|
Enum_Loc = Enum_Par_Val;
|
|
if (Enum_Loc == Ident_3)
|
|
/* then, executed */
|
|
return (true);
|
|
else /* not executed */
|
|
return (false);
|
|
} /* Func_3 */
|
|
|