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/*
* tracegen.c - Running the binary tracegen with valgrind produces
* a memory trace of all of the registered transpose functions.
*
* The beginning and end of each registered transpose function's trace
* is indicated by reading from "marker" addresses. These two marker
* addresses are recorded in file for later use.
*/
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <unistd.h>
#include <getopt.h>
#include "cachelab.h"
#include <string.h>
/* External variables declared in cachelab.c */
extern trans_func_t func_list[MAX_TRANS_FUNCS];
extern int func_counter;
/* External function from trans.c */
extern void registerFunctions();
/* Markers used to bound trace regions of interest */
volatile char MARKER_START, MARKER_END;
static int A[256][256];
static int B[256][256];
static int M;
static int N;
int validate(int fn,int M, int N, int A[N][M], int B[M][N]) {
int C[M][N];
memset(C,0,sizeof(C));
correctTrans(M,N,A,C);
for(int i=0;i<M;i++) {
for(int j=0;j<N;j++) {
if(B[i][j]!=C[i][j]) {
printf("Validation failed on function %d! Expected %d but got %d at B[%d][%d]\n",fn,C[i][j],B[i][j],i,j);
return 0;
}
}
}
return 1;
}
int main(int argc, char* argv[]){
int i;
char c;
int selectedFunc=-1;
while( (c=getopt(argc,argv,"M:N:F:")) != -1){
switch(c){
case 'M':
M = atoi(optarg);
break;
case 'N':
N = atoi(optarg);
break;
case 'F':
selectedFunc = atoi(optarg);
break;
case '?':
default:
printf("./tracegen failed to parse its options.\n");
exit(1);
}
}
/* Register transpose functions */
registerFunctions();
/* Fill A with data */
initMatrix(M,N, A, B);
/* Record marker addresses */
FILE* marker_fp = fopen(".marker","w");
assert(marker_fp);
fprintf(marker_fp, "%llx %llx",
(unsigned long long int) &MARKER_START,
(unsigned long long int) &MARKER_END );
fclose(marker_fp);
if (-1==selectedFunc) {
/* Invoke registered transpose functions */
for (i=0; i < func_counter; i++) {
MARKER_START = 33;
(*func_list[i].func_ptr)(M, N, A, B);
MARKER_END = 34;
if (!validate(i,M,N,A,B))
return i+1;
}
} else {
MARKER_START = 33;
(*func_list[selectedFunc].func_ptr)(M, N, A, B);
MARKER_END = 34;
if (!validate(selectedFunc,M,N,A,B))
return selectedFunc+1;
}
return 0;
}
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