284 lines
7.8 KiB
C
284 lines
7.8 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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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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#include <linux/ktime.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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/* Global Variables: */
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int Int_Glob;
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char Ch_1_Glob;
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static Rec_Pointer Ptr_Glob, Next_Ptr_Glob;
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static Boolean Bool_Glob;
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static char Ch_2_Glob;
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static int Arr_1_Glob[50];
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static int Arr_2_Glob[50][50];
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static 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) {
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/* then, executed */
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*Ptr_Ref_Par = Ptr_Glob->Ptr_Comp;
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}
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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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static void Proc_1(Rec_Pointer Ptr_Val_Par)
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/******************/
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/* executed once */
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{
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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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*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 == Ptr_Glob->Ptr_Comp */
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if (Next_Record->Discr == Ident_1) {
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/* then, executed */
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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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} else {
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/* not executed */
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*Ptr_Val_Par = *Ptr_Val_Par->Ptr_Comp;
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}
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} /* Proc_1 */
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static 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 {
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/* executed once */
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if (Ch_1_Glob == 'A') {
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/* then, executed */
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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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static void Proc_4(void)
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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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static void Proc_5(void)
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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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int dhry(int n)
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/*****/
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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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{
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One_Fifty Int_1_Loc;
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One_Fifty Int_2_Loc;
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One_Fifty Int_3_Loc;
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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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int Run_Index;
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int Number_Of_Runs;
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ktime_t Begin_Time, End_Time;
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u32 User_Time;
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/* Initializations */
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Next_Ptr_Glob = (Rec_Pointer)kzalloc(sizeof(Rec_Type), GFP_KERNEL);
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Ptr_Glob = (Rec_Pointer)kzalloc(sizeof(Rec_Type), GFP_KERNEL);
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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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pr_debug("Dhrystone Benchmark, Version 2.1 (Language: C)\n");
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Number_Of_Runs = n;
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pr_debug("Execution starts, %d runs through Dhrystone\n",
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Number_Of_Runs);
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/***************/
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/* Start timer */
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/***************/
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Begin_Time = ktime_get();
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for (Run_Index = 1; Run_Index <= Number_Of_Runs; ++Run_Index) {
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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) {
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/* loop body executed once */
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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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if (Enum_Loc == Func_1(Ch_Index, 'C')) {
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/* then, not executed */
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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 = ktime_get();
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#define dhry_assert_int_eq(val, expected) \
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if (val != expected) \
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pr_err("%s: %d (FAIL, expected %d)\n", #val, val, \
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expected); \
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else \
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pr_debug("%s: %d (OK)\n", #val, val)
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#define dhry_assert_char_eq(val, expected) \
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if (val != expected) \
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pr_err("%s: %c (FAIL, expected %c)\n", #val, val, \
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expected); \
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else \
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pr_debug("%s: %c (OK)\n", #val, val)
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#define dhry_assert_string_eq(val, expected) \
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if (strcmp(val, expected)) \
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pr_err("%s: %s (FAIL, expected %s)\n", #val, val, \
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expected); \
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else \
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pr_debug("%s: %s (OK)\n", #val, val)
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pr_debug("Execution ends\n");
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pr_debug("Final values of the variables used in the benchmark:\n");
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dhry_assert_int_eq(Int_Glob, 5);
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dhry_assert_int_eq(Bool_Glob, 1);
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dhry_assert_char_eq(Ch_1_Glob, 'A');
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dhry_assert_char_eq(Ch_2_Glob, 'B');
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dhry_assert_int_eq(Arr_1_Glob[8], 7);
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dhry_assert_int_eq(Arr_2_Glob[8][7], Number_Of_Runs + 10);
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pr_debug("Ptr_Comp: %px\n", Ptr_Glob->Ptr_Comp);
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dhry_assert_int_eq(Ptr_Glob->Discr, 0);
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dhry_assert_int_eq(Ptr_Glob->variant.var_1.Enum_Comp, 2);
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dhry_assert_int_eq(Ptr_Glob->variant.var_1.Int_Comp, 17);
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dhry_assert_string_eq(Ptr_Glob->variant.var_1.Str_Comp,
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"DHRYSTONE PROGRAM, SOME STRING");
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if (Next_Ptr_Glob->Ptr_Comp != Ptr_Glob->Ptr_Comp)
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pr_err("Next_Ptr_Glob->Ptr_Comp: %px (expected %px)\n",
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Next_Ptr_Glob->Ptr_Comp, Ptr_Glob->Ptr_Comp);
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else
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pr_debug("Next_Ptr_Glob->Ptr_Comp: %px\n",
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Next_Ptr_Glob->Ptr_Comp);
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dhry_assert_int_eq(Next_Ptr_Glob->Discr, 0);
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dhry_assert_int_eq(Next_Ptr_Glob->variant.var_1.Enum_Comp, 1);
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dhry_assert_int_eq(Next_Ptr_Glob->variant.var_1.Int_Comp, 18);
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dhry_assert_string_eq(Next_Ptr_Glob->variant.var_1.Str_Comp,
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"DHRYSTONE PROGRAM, SOME STRING");
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dhry_assert_int_eq(Int_1_Loc, 5);
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dhry_assert_int_eq(Int_2_Loc, 13);
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dhry_assert_int_eq(Int_3_Loc, 7);
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dhry_assert_int_eq(Enum_Loc, 1);
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dhry_assert_string_eq(Str_1_Loc, "DHRYSTONE PROGRAM, 1'ST STRING");
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dhry_assert_string_eq(Str_2_Loc, "DHRYSTONE PROGRAM, 2'ND STRING");
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User_Time = ktime_to_ms(ktime_sub(End_Time, Begin_Time));
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kfree(Ptr_Glob);
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kfree(Next_Ptr_Glob);
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/* Measurements should last at least 2 seconds */
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if (User_Time < 2 * MSEC_PER_SEC)
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return -EAGAIN;
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return div_u64(mul_u32_u32(MSEC_PER_SEC, Number_Of_Runs), User_Time);
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}
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