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- // See LICENSE for license details.
- //**************************************************************************
- // Dhrystone bencmark
- //--------------------------------------------------------------------------
- //
- // This is the classic Dhrystone synthetic integer benchmark.
- // You should not change anything except the HOST_DEBUG and
- // PREALLOCATE macros for your timing run.
- #pragma GCC optimize ("no-inline")
- #include "dhrystone.h"
- //--------------------------------------------------------------------------
- // Macros
- // Set HOST_DEBUG to 1 if you are going to compile this for a host
- // machine (ie Athena/Linux) for debug purposes and set HOST_DEBUG
- // to 0 if you are compiling with the smips-gcc toolchain.
- #ifndef HOST_DEBUG
- #define HOST_DEBUG 0
- #endif
- // Set PREALLOCATE to 1 if you want to preallocate the benchmark
- // function before starting stats. If you have instruction/data
- // caches and you don't want to count the overhead of misses, then
- // you will need to use preallocation.
- #ifndef PREALLOCATE
- #define PREALLOCATE 0
- #endif
- // Set SET_STATS to 1 if you want to carve out the piece that actually
- // does the computation.
- #ifndef SET_STATS
- #define SET_STATS 0
- #endif
- #if HOST_DEBUG
- # define debug_printf printf
- #else
- void debug_printf(const char* str, ...);
- #endif
- #include "util.h"
- #include <alloca.h>
- /* 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];
- 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;
- #undef REG
- #define REG register
- #endif
- Boolean Done;
- long Begin_Time,
- End_Time,
- User_Time;
- long Microseconds,
- Dhrystones_Per_Second;
- /* end of variables for time measurement */
- int main (int argc, char** argv)
- /*****/
- /* 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;
- /* Arguments */
- #if HOST_DEBUG
- if (argc > 2)
- {
- printf("Usage: %s [number of loops]\n", argv[0]);
- exit (1);
- }
- if (argc == 2)
- {
- Number_Of_Runs = atoi (argv[1]);
- }
- else if (Number_Of_Runs <= 0)
- #endif
- {
- Number_Of_Runs = NUMBER_OF_RUNS;
- }
- /* Initializations */
- Next_Ptr_Glob = (Rec_Pointer) alloca (sizeof (Rec_Type));
- Ptr_Glob = (Rec_Pointer) alloca (sizeof (Rec_Type));
- 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. */
- debug_printf("\n");
- debug_printf("Dhrystone Benchmark, Version %s\n", Version);
- if (Reg)
- {
- debug_printf("Program compiled with 'register' attribute\n");
- }
- else
- {
- debug_printf("Program compiled without 'register' attribute\n");
- }
- debug_printf("Using %s, HZ=%d\n", CLOCK_TYPE, HZ);
- debug_printf("\n");
- Done = false;
- while (!Done) {
- debug_printf("Trying %d runs through Dhrystone:\n", Number_Of_Runs);
- /***************/
- /* Start timer */
- /***************/
- setStats(1);
- Start_Timer();
- 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 */
- /**************/
- Stop_Timer();
- setStats(0);
- User_Time = End_Time - Begin_Time;
- if (User_Time < Too_Small_Time)
- {
- printf("Measured time too small to obtain meaningful results\n");
- Number_Of_Runs = Number_Of_Runs * 10;
- printf("\n");
- } else Done = true;
- }
- debug_printf("Final values of the variables used in the benchmark:\n");
- debug_printf("\n");
- debug_printf("Int_Glob: %d\n", Int_Glob);
- debug_printf(" should be: %d\n", 5);
- debug_printf("Bool_Glob: %d\n", Bool_Glob);
- debug_printf(" should be: %d\n", 1);
- debug_printf("Ch_1_Glob: %c\n", Ch_1_Glob);
- debug_printf(" should be: %c\n", 'A');
- debug_printf("Ch_2_Glob: %c\n", Ch_2_Glob);
- debug_printf(" should be: %c\n", 'B');
- debug_printf("Arr_1_Glob[8]: %d\n", Arr_1_Glob[8]);
- debug_printf(" should be: %d\n", 7);
- debug_printf("Arr_2_Glob[8][7]: %d\n", Arr_2_Glob[8][7]);
- debug_printf(" should be: Number_Of_Runs + 10\n");
- debug_printf("Ptr_Glob->\n");
- debug_printf(" Ptr_Comp: %d\n", (long) Ptr_Glob->Ptr_Comp);
- debug_printf(" should be: (implementation-dependent)\n");
- debug_printf(" Discr: %d\n", Ptr_Glob->Discr);
- debug_printf(" should be: %d\n", 0);
- debug_printf(" Enum_Comp: %d\n", Ptr_Glob->variant.var_1.Enum_Comp);
- debug_printf(" should be: %d\n", 2);
- debug_printf(" Int_Comp: %d\n", Ptr_Glob->variant.var_1.Int_Comp);
- debug_printf(" should be: %d\n", 17);
- debug_printf(" Str_Comp: %s\n", Ptr_Glob->variant.var_1.Str_Comp);
- debug_printf(" should be: DHRYSTONE PROGRAM, SOME STRING\n");
- debug_printf("Next_Ptr_Glob->\n");
- debug_printf(" Ptr_Comp: %d\n", (long) Next_Ptr_Glob->Ptr_Comp);
- debug_printf(" should be: (implementation-dependent), same as above\n");
- debug_printf(" Discr: %d\n", Next_Ptr_Glob->Discr);
- debug_printf(" should be: %d\n", 0);
- debug_printf(" Enum_Comp: %d\n", Next_Ptr_Glob->variant.var_1.Enum_Comp);
- debug_printf(" should be: %d\n", 1);
- debug_printf(" Int_Comp: %d\n", Next_Ptr_Glob->variant.var_1.Int_Comp);
- debug_printf(" should be: %d\n", 18);
- debug_printf(" Str_Comp: %s\n",
- Next_Ptr_Glob->variant.var_1.Str_Comp);
- debug_printf(" should be: DHRYSTONE PROGRAM, SOME STRING\n");
- debug_printf("Int_1_Loc: %d\n", Int_1_Loc);
- debug_printf(" should be: %d\n", 5);
- debug_printf("Int_2_Loc: %d\n", Int_2_Loc);
- debug_printf(" should be: %d\n", 13);
- debug_printf("Int_3_Loc: %d\n", Int_3_Loc);
- debug_printf(" should be: %d\n", 7);
- debug_printf("Enum_Loc: %d\n", Enum_Loc);
- debug_printf(" should be: %d\n", 1);
- debug_printf("Str_1_Loc: %s\n", Str_1_Loc);
- debug_printf(" should be: DHRYSTONE PROGRAM, 1'ST STRING\n");
- debug_printf("Str_2_Loc: %s\n", Str_2_Loc);
- debug_printf(" should be: DHRYSTONE PROGRAM, 2'ND STRING\n");
- debug_printf("\n");
- Microseconds = ((User_Time / Number_Of_Runs) * Mic_secs_Per_Second) / HZ;
- Dhrystones_Per_Second = (HZ * Number_Of_Runs) / User_Time;
- printf("Microseconds for one run through Dhrystone: %ld\n", Microseconds);
- printf("Dhrystones per Second: %ld\n", Dhrystones_Per_Second);
- return 0;
- }
- 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 */
- 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 */
- 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 */
- Proc_4 () /* 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 */
- Proc_5 () /* without parameters */
- /*******/
- /* executed once */
- {
- Ch_1_Glob = 'A';
- Bool_Glob = false;
- } /* Proc_5 */
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