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sim.y
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sim.y
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%{
#include "cache.h"
#include "sim.h"
extern FILE *yyin;
void yyerror (char *s);
int yylex();
%}
%union {int addr;int num;char * s;}
%token MEMDUMP REGDUMP
%token <addr> ADDR
%token <num> NUM
%token er END
%token STEP QUIT
%token CONTINUE RUN BREAK DELETE
%start Input
%%
Input: Line
| Line Input
;
Line: END {/*printf("Got only end\n");*/}
| Expression {/*printf("Got only expression\n");*/}
;
Expression:
REGDUMP END {print_regdump();}
| MEMDUMP ADDR NUM END {print_memdump($2,$3);}
| STEP END {return 50;}
| QUIT END {return 100;}
| RUN END {return 150;}
| CONTINUE END {return 200;}
| BREAK NUM END {Add_Break($2);}
| DELETE NUM END {Delete_Break($2);}
;
| REGDUMP er {}
| MEMDUMP ADDR NUM er {}
| MEMDUMP ADDR er {}
| MEMDUMP er {}
| STEP er {}
| CONTINUE er {}
| RUN er {}
| BREAK NUM er {}
| DELETE NUM er {}
| BREAK er {}
| DELETE er {}
| er {}
;
%%
void initialise()
{
iacc=dacc=numins=numcycles=icache=0;
int i=0;
for(i=0;i<34;++i)
{reg[i]=0;}
reg[34]=0x00400000;//pc=0x00400000
for(i=0;i<74000005;++i)
{mem[i]=0;}
inf[0].Ins.type=0;
inf[1].Ins.type=0;
id[0].Ins.type=0;
id[1].Ins.type=0;
ex[0].Ins.type=0;
ex[1].Ins.type=0;
ma[0].Ins.type=0;
ma[1].Ins.type=0;
isbreak=(int *)calloc((1e7+55),sizeof(int));
}
void print_regdump()
{
int i;
for(i=0;i<32;++i)
{printf("$%02d: 0x%08x \n",i,reg[i]);}
printf("hi: 0x%08x \n",reg[32]);
printf("lo: 0x%08x \n",reg[33]);
printf("pc: 0x%08x \n",reg[34]);
}
void print_memdump(int addr,int num)
{
if(addr<0x10010000)
{fprintf(stderr,"Error - Address given is out of range\n");}
else if(addr>0x10010000+67108864)
{fprintf(stderr,"Error - Address given is out of range\n");}
else
{
int i=0;
for(i=0;i<num;++i)
{printf("0x%08x: 0x%02x\n",addr+i,mem[addr-0x10010000+i]);}
}
}
void llinttobinary(long long int a,int num)
{
long long int b=a;
int j;
for(j=31;j>=0;--j)
{ins_string[num][j]=b%2+'0';b/=2;}
//ins_string[num][32]='\0';
}
void input_hexin()
{
if (hexin == NULL) {
fprintf(stderr,"Error - Input hex file not found\n");
exit(-1);
}
int x=1;
char str[1000];
ins=(long long int *)calloc((1e7+10),sizeof(long long int));
ins_string = (char**)calloc((1e7+10), sizeof(char*));
numins=0;
while(fscanf(hexin,"%s",str)!=EOF)
{
if(strlen(str)==8)
{
int i=0;
for(i=0;i<8;++i)
{
str[i]=toupper(str[i]);
if(!( ('0'<=str[i] && str[i]<='9')||('A'<=str[i] && str[i]<='F') ))
{fprintf(stderr,"Error - Invalid instruction number %d\n",x);
goto label;}
}
ins[numins]=(long long int)strtol(str, NULL, 16);//hex string to long long int
ins_string[numins] = (char*)calloc(32, sizeof(char));
llinttobinary(ins[numins],numins);
//printf("ins_string[%d]=\"%s\" len=%lu ins[%d]=%lld\n",numins,ins_string[numins],strlen(ins_string[numins]),numins,ins[numins]);
++numins;
}
else
{fprintf(stderr,"Error - Invalid instruction number %d\n",x);}
label:;
++x;
}
fclose(hexin);
}
void test_hexin()
{
printf("numins=%d\n",numins);
int i=0;
for(i=0;i<numins;++i)
{
printf("ins[%d]=%lld\n",i,ins[i]);
}
}
int main(int argc, char* argv[])
{
initialise();
int printres=0;
//test();
if(argc == 4)
{
hexin=fopen(argv[1],"r");
if (hexin == NULL) {
fprintf(stderr,"Error - Input hex file \"%s\" not found\n",argv[1]);
exit(-1);
}
// svgout=fopen(argv[2],"w");
// if (svgout == NULL) {
// fprintf(stderr,"Error - Output svg file \"%s\" not found\n",argv[2]);
// exit(-1);
// }
svgfile=strdup(argv[2]);
printres=0;
}
else if(argc == 5)
{
hexin=fopen(argv[1],"r");
if (hexin == NULL) {
fprintf(stderr,"Error - Input hex file \"%s\" not found\n",argv[1]);
exit(-1);
}
// svgout=fopen(argv[2],"w");
// if (svgout == NULL) {
// fprintf(stderr,"Error - Output svg file \"%s\" not found\n",argv[2]);
// exit(-1);
// }
svgfile=strdup(argv[2]);
resout=fopen(argv[3],"w");
if (resout == NULL) {
fprintf(stderr,"Error - Output result file \"%s\" not found\n",argv[3]);
exit(-1);
}
printres=1;
}
else
{
fprintf(stderr, "Error - 3 or 4 arguments required! Now %d arguments given\n",argc);
exit(-1);
}
/*hexin=fopen("in6.hex","r");
if (hexin == NULL) {
fprintf(stderr,"Error - Input hex file \"%s\" not found\n","");
exit(-1);
} printres=1;
svgout=fopen("test6.svg","w");
if (svgout == NULL) {
fprintf(stderr,"Error - Output svg file \"%s\" not found\n","");
exit(-1);
}
resout=fopen("results6.txt","w");
if (resout == NULL) {
fprintf(stderr,"Error - Output result file \"%s\" not found\n","");
exit(-1);
}
resout=fopen("results6.txt","w");
if (resout == NULL) {
fprintf(stderr,"Error - Output result file \"%s\" not found\n","");
exit(-1);
}
*/
yyin = stdin;
if (yyin == NULL) {
fprintf(stderr,"Error - yyin is null\n");
exit(-2);
}
//these have to be called only once
set_default();
input_cfg();
init_vars();//allocate space
init_cache();
//don't change the order
simulate();
//change to keep parsing multiple times because we just want to ignore the wrong line
do {
//printf("Shell>>");
int temp=yyparse();
if(temp==100)//quit
{break;}
else if(temp==50 || temp==150 || temp==200)//step,run,continue
{printf("Simulation has already finished!\t enter \"quit\" to exit\n");}
} while (!feof(yyin));
// test_print(); //debug
if(printres==1)//output the result file
{
print_result();
fflush(resout);
fclose(resout);
}
//printf("%d\n",printres);
return 0;
}
void print_result()//-------------TODO
{
fprintf(resout,"Instructions,%d\n",iacc);
fprintf(resout,"Cycles,%d\n",numcycles);
double ipc=iacc*1.0/numcycles*1.0;
fprintf(resout,"IPC,%.04lf\n",ipc);
double Time=numcycles*0.5;
int time=Time;
if(time==Time)
fprintf(resout,"Time (ns),%d\n",time);
else
fprintf(resout,"Time (ns),%.04lf\n",Time);//
double Idle_time=(numcycles-iacc)*0.5;
int idle_time=Idle_time;
if(idle_time==Idle_time)
fprintf(resout,"Idle time (ns),%d\n",idle_time);
else
fprintf(resout,"Idle time (ns),%.4lf\n",Idle_time);//
fprintf(resout,"Idle time (%%),%.04lf%%\n",(Idle_time/Time)*100.0);
fprintf(resout,"Cache Summary\n");
fprintf(resout,"Cache L1-I\n");
fprintf(resout,"num cache accesses,%d\n",icache-4);
fprintf(resout,"Cache L1-D\n");
fprintf(resout,"num cache accesses,%d\n",dacc);
}
//print error but don't exit
void yyerror(char * s) {
if (strcmp(s, "syntax error") == 0) {
fprintf(stderr,"Error - Format of input is wrong\n");
} else {
fprintf(stderr,"%s\n", s);
}
}