/* **************************************************************************** * * "DHRYSTONE" Benchmark Program * ----------------------------- * * Version: C, Version 2.1 * * File: dhry_1.c (part 2 of 3) * * Date: May 25, 1988 * * Author: Reinhold P. Weicker * **************************************************************************** */ /* Original from https://github.com/sifive/benchmark-dhrystone Modified for the NEORV32 Processor */ #define TIME #include #include #include "dhry.h" #ifndef DHRY_ITERS #define DHRY_ITERS 10000 #endif /* 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]; //extern char *malloc (); 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; #endif /* variables for time measurement: */ #ifdef TIMES struct tms time_info; extern int times (); /* see library function "times" */ #define Too_Small_Time (2*HZ) /* Measurements should last at least about 2 seconds */ #endif #ifdef TIME extern long time(); /* see library function "time" */ #define Too_Small_Time 2 /* Measurements should last at least 2 seconds */ #endif #ifdef MSC_CLOCK extern clock_t clock(); #define Too_Small_Time (2*HZ) #endif long Begin_Time, End_Time, User_Time; float Microseconds, Dhrystones_Per_Second; /* end of variables for time measurement */ int main (void) /*****/ /* 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; { /* ***** NEORV32-SPECIFIC ***** */ neorv32_cpu_csr_write(CSR_MIE, 0); // no interrupt, thanks neorv32_rte_setup(); // capture all exceptions and give debug information, ho hw flow control neorv32_uart0_setup(19200, PARITY_NONE, FLOW_CONTROL_NONE); // check available hardware extensions and compare with compiler flags neorv32_rte_check_isa(0); // silent = 0 -> show message if isa mismatch neorv32_uart0_printf("NEORV32: Processor running at %u Hz\n", (uint32_t)NEORV32_SYSINFO.CLK); neorv32_uart0_printf("NEORV32: Executing Dhrystone (%u iterations). This may take some time...\n\n", (uint32_t)DHRY_ITERS); // clear cycle counter neorv32_cpu_set_mcycle(0); #ifndef RUN_DHRYSTONE #warning DHRYSTONE HAS NOT BEEN COMPILED! Use >>make USER_FLAGS+=-DRUN_DHRYSTONE clean_all exe<< to compile it. // inform the user if you are actually executing this neorv32_uart0_printf("ERROR! DhryStone has not been compiled. Use >>make USER_FLAGS+=-RUN_DHRYSTONE clean_all exe<< to compile it.\n"); while(1); #endif } /* ***** /NEORV32-SPECIFIC ***** */ /* Initializations */ { /* ***** NEORV32-SPECIFIC ***** */ // use static memory allocation, no dynamic malloc //Next_Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type)); //Ptr_Glob = (Rec_Pointer) malloc (sizeof (Rec_Type)); static Rec_Type Rec_Type_v0, Rec_Type_v1; Next_Ptr_Glob = &Rec_Type_v0; Ptr_Glob = &Rec_Type_v1; } /* ***** /NEORV32-SPECIFIC ***** */ 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. */ neorv32_uart0_printf ("\n"); neorv32_uart0_printf ("Dhrystone Benchmark, Version 2.1 (Language: C)\n"); neorv32_uart0_printf ("\n"); if (Reg) { neorv32_uart0_printf ("Program compiled with 'register' attribute\n"); neorv32_uart0_printf ("\n"); } else { neorv32_uart0_printf ("Program compiled without 'register' attribute\n"); neorv32_uart0_printf ("\n"); } #ifdef DHRY_ITERS Number_Of_Runs = DHRY_ITERS; #else neorv32_uart0_printf ("Please give the number of runs through the benchmark: "); { int n; scanf ("%d", &n); Number_Of_Runs = n; } neorv32_uart0_printf ("\n"); #endif neorv32_uart0_printf ("Execution starts, %u runs through Dhrystone\n", (uint32_t)Number_Of_Runs); /***************/ /* Start timer */ /***************/ /* #ifdef TIMES times (&time_info); Begin_Time = (long) time_info.tms_utime; #endif #ifdef TIME Begin_Time = time ( (long *) 0); #endif #ifdef MSC_CLOCK Begin_Time = clock(); #endif */ { /* ***** NEORV32-SPECIFIC ***** */ Begin_Time = (long)neorv32_mtime_get_time(); } /* ***** /NEORV32-SPECIFIC ***** */ 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 */ /**************/ /* #ifdef TIMES times (&time_info); End_Time = (long) time_info.tms_utime; #endif #ifdef TIME End_Time = time ( (long *) 0); #endif #ifdef MSC_CLOCK End_Time = clock(); #endif */ { /* ***** NEORV32-SPECIFIC ***** */ End_Time = (long)neorv32_mtime_get_time(); } /* ***** /NEORV32-SPECIFIC ***** */ neorv32_uart0_printf ("Execution ends\n"); neorv32_uart0_printf ("\n"); neorv32_uart0_printf ("Final values of the variables used in the benchmark:\n"); neorv32_uart0_printf ("\n"); neorv32_uart0_printf ("Int_Glob: %u\n", (uint32_t)Int_Glob); neorv32_uart0_printf (" should be: %u\n", 5); neorv32_uart0_printf ("Bool_Glob: %u\n", (uint32_t)Bool_Glob); neorv32_uart0_printf (" should be: %u\n", 1); neorv32_uart0_printf ("Ch_1_Glob: %c\n", (uint32_t)Ch_1_Glob); neorv32_uart0_printf (" should be: %c\n", 'A'); neorv32_uart0_printf ("Ch_2_Glob: %c\n", (uint32_t)Ch_2_Glob); neorv32_uart0_printf (" should be: %c\n", 'B'); neorv32_uart0_printf ("Arr_1_Glob[8]: %u\n", (uint32_t)Arr_1_Glob[8]); neorv32_uart0_printf (" should be: %u\n", 7); neorv32_uart0_printf ("Arr_2_Glob[8][7]: %u\n", (uint32_t)Arr_2_Glob[8][7]); neorv32_uart0_printf (" should be: Number_Of_Runs + 10\n"); neorv32_uart0_printf ("Ptr_Glob->\n"); neorv32_uart0_printf (" Ptr_Comp: %u\n", (uint32_t) Ptr_Glob->Ptr_Comp); neorv32_uart0_printf (" should be: (implementation-dependent)\n"); neorv32_uart0_printf (" Discr: %u\n", (uint32_t)Ptr_Glob->Discr); neorv32_uart0_printf (" should be: %u\n", 0); neorv32_uart0_printf (" Enum_Comp: %u\n", (uint32_t)Ptr_Glob->variant.var_1.Enum_Comp); neorv32_uart0_printf (" should be: %u\n", 2); neorv32_uart0_printf (" Int_Comp: %u\n", (uint32_t)Ptr_Glob->variant.var_1.Int_Comp); neorv32_uart0_printf (" should be: %u\n", 17); neorv32_uart0_printf (" Str_Comp: %s\n", Ptr_Glob->variant.var_1.Str_Comp); neorv32_uart0_printf (" should be: DHRYSTONE PROGRAM, SOME STRING\n"); neorv32_uart0_printf ("Next_Ptr_Glob->\n"); neorv32_uart0_printf (" Ptr_Comp: %u\n", (uint32_t) Next_Ptr_Glob->Ptr_Comp); neorv32_uart0_printf (" should be: (implementation-dependent), same as above\n"); neorv32_uart0_printf (" Discr: %u\n", (uint32_t)Next_Ptr_Glob->Discr); neorv32_uart0_printf (" should be: %u\n", 0); neorv32_uart0_printf (" Enum_Comp: %u\n", (uint32_t)Next_Ptr_Glob->variant.var_1.Enum_Comp); neorv32_uart0_printf (" should be: %u\n", 1); neorv32_uart0_printf (" Int_Comp: %u\n", (uint32_t)Next_Ptr_Glob->variant.var_1.Int_Comp); neorv32_uart0_printf (" should be: %u\n", 18); neorv32_uart0_printf (" Str_Comp: %s\n", Next_Ptr_Glob->variant.var_1.Str_Comp); neorv32_uart0_printf (" should be: DHRYSTONE PROGRAM, SOME STRING\n"); neorv32_uart0_printf ("Int_1_Loc: %u\n", (uint32_t)Int_1_Loc); neorv32_uart0_printf (" should be: %u\n", 5); neorv32_uart0_printf ("Int_2_Loc: %u\n", (uint32_t)Int_2_Loc); neorv32_uart0_printf (" should be: %u\n", 13); neorv32_uart0_printf ("Int_3_Loc: %u\n", (uint32_t)Int_3_Loc); neorv32_uart0_printf (" should be: %u\n", 7); neorv32_uart0_printf ("Enum_Loc: %u\n", (uint32_t)Enum_Loc); neorv32_uart0_printf (" should be: %u\n", 1); neorv32_uart0_printf ("Str_1_Loc: %s\n", Str_1_Loc); neorv32_uart0_printf (" should be: DHRYSTONE PROGRAM, 1'ST STRING\n"); neorv32_uart0_printf ("Str_2_Loc: %s\n", Str_2_Loc); neorv32_uart0_printf (" should be: DHRYSTONE PROGRAM, 2'ND STRING\n"); neorv32_uart0_printf ("\n"); User_Time = End_Time - Begin_Time; // if (User_Time < Too_Small_Time) // { // neorv32_uart0_printf ("Measured time too small to obtain meaningful results\n"); // neorv32_uart0_printf ("Please increase number of runs\n"); // neorv32_uart0_printf ("\n"); // } // else { /* #ifdef TIME Microseconds = (float) User_Time * Mic_secs_Per_Second / (float) Number_Of_Runs; Dhrystones_Per_Second = (float) Number_Of_Runs / (float) User_Time; #else Microseconds = (float) User_Time * Mic_secs_Per_Second / ((float) HZ * ((float) Number_Of_Runs)); Dhrystones_Per_Second = ((float) HZ * (float) Number_Of_Runs) / (float) User_Time; #endif */ { /* ***** NEORV32-SPECIFIC ***** */ neorv32_uart0_printf ("Microseconds for one run through Dhrystone: %u \n", (uint32_t)((User_Time * (Mic_secs_Per_Second / Number_Of_Runs)) / NEORV32_SYSINFO.CLK)); uint32_t dhry_per_sec = (uint32_t)(NEORV32_SYSINFO.CLK / (User_Time / Number_Of_Runs)); neorv32_uart0_printf ("Dhrystones per Second: %u \n\n", (uint32_t)dhry_per_sec); neorv32_uart0_printf("NEORV32: << DETAILED RESULTS (integer parts only) >>\n"); neorv32_uart0_printf("NEORV32: Total cycles: %u\n", (uint32_t)User_Time); neorv32_uart0_printf("NEORV32: Cycles per second: %u\n", (uint32_t)NEORV32_SYSINFO.CLK); neorv32_uart0_printf("NEORV32: Total runs: %u\n", (uint32_t)Number_Of_Runs); neorv32_uart0_printf("\n"); neorv32_uart0_printf("NEORV32: DMIPS/s: %u\n", (uint32_t)dhry_per_sec); neorv32_uart0_printf("NEORV32: DMIPS/s/MHz: %u\n", (uint32_t)(dhry_per_sec / (NEORV32_SYSINFO.CLK / 1000000))); neorv32_uart0_printf("\n"); neorv32_uart0_printf("NEORV32: VAX DMIPS/s: %u\n", (uint32_t)dhry_per_sec/1757); neorv32_uart0_printf("NEORV32: VAX DMIPS/s/MHz: %u/1757\n", (uint32_t)(dhry_per_sec / (NEORV32_SYSINFO.CLK / 1000000))); } /* ***** /NEORV32-SPECIFIC ***** */ /* neorv32_uart0_printf ("Microseconds for one run through Dhrystone: "); //neorv32_uart0_printf ("%6.1f \n", Microseconds); neorv32_uart0_printf ("%d \n", (int)Microseconds); neorv32_uart0_printf ("Dhrystones per Second: "); //neorv32_uart0_printf ("%6.1f \n", Dhrystones_Per_Second); neorv32_uart0_printf ("%d \n", (int)Dhrystones_Per_Second); neorv32_uart0_printf ("\n"); */ } return 0; } void Proc_1 (Ptr_Val_Par) /******************/ 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 (Int_Par_Ref) /******************/ /* executed once */ /* *Int_Par_Ref == 1, becomes 4 */ One_Fifty *Int_Par_Ref; { 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 (Ptr_Ref_Par) /******************/ /* executed once */ /* Ptr_Ref_Par becomes Ptr_Glob */ 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 (void) /* 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 (void) /* without parameters */ /*******/ /* executed once */ { Ch_1_Glob = 'A'; Bool_Glob = false; } /* Proc_5 */ /* Procedure for the assignment of structures, */ /* if the C compiler doesn't support this feature */ #ifdef NOSTRUCTASSIGN memcpy (d, s, l) register char *d; register char *s; register int l; { while (l--) *d++ = *s++; } #endif /* Compare S1 and S2, returning less than, equal to or greater than zero if S1 is lexicographically less than, equal to or greater than S2. [from glibc] */ int strcmp(const char *p1, const char *p2) { const unsigned char *s1 = (const unsigned char *) p1; const unsigned char *s2 = (const unsigned char *) p2; unsigned char c1, c2; do { c1 = (unsigned char) *s1++; c2 = (unsigned char) *s2++; if (c1 == '\0') return c1 - c2; } while (c1 == c2); return c1 - c2; }