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added mapva stats

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This commit is contained in:
Jim 2007-09-04 00:00:00 -04:00
parent 8f95ccc375
commit 2ee4f03291
1 changed files with 18 additions and 1 deletions
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19
em.c
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@ -404,6 +404,10 @@ typedef struct {
int csoffset; /* concealed stack segment offset */
int livereglim; /* 010 if seg enabled, 040 if disabled */
int mapvacalls; /* # of mapva calls */
int mapvamisses; /* STLB misses */
} gv_t;
static gv_t gv;
@ -667,7 +671,8 @@ char *searchloadmap(int addr, char type) {
#define XACC 4
/* NOTE: this is the 6350 STLB hash function, giving a 9-bit index 0-511 */
/* NOTE: this is the 6350 STLB hash function, giving a 9-bit index 0-511.
The hit rate is over 99% for booting and compiling Primos */
#define STLBIX(ea) ((((((ea) >> 12) ^ (ea)) & 0xc000) >> 7) | (((ea) & 0x70000) >> 12) | ((ea) & 0x3c00) >> 10)
@ -699,6 +704,9 @@ static pa_t mapva(ea_t ea, ea_t rp, short intacc, unsigned short *access) {
/* map virtual address if segmentation is enabled */
if (crs[MODALS] & 4) {
#ifndef NOTRACE
gvp->mapvacalls++;
#endif
seg = SEGNO32(ea);
stlbix = STLBIX(ea);
stlbp = gvp->stlb+stlbix;
@ -714,6 +722,9 @@ static pa_t mapva(ea_t ea, ea_t rp, short intacc, unsigned short *access) {
then the STLB has to be loaded first */
if (!stlbp->valid || stlbp->seg != seg || (seg >= 04000 && stlbp->procid != crs[OWNERL])) {
#ifndef NOTRACE
gvp->mapvamisses++;
#endif
dtar = *(unsigned int *)(crs+DTAR0-2*DTAR32(ea)); /* get dtar register */
nsegs = 1024-(dtar>>22);
relseg = seg & 0x3FF; /* segment within segment table */
@ -1419,6 +1430,10 @@ static void fatal(char *msg) {
}
}
#ifndef NOTRACE
printf("STLB calls: %d misses: %d hitrate: %5.2f%%\n", gvp->mapvacalls, gvp->mapvamisses, (double)(gvp->mapvacalls-gvp->mapvamisses)/gvp->mapvacalls*100.0);
#endif
if (msg)
printf("%s\n", msg);
/* should do a register dump, RL dump, PCB dump, etc. here... */
@ -3691,6 +3706,8 @@ main (int argc, char **argv) {
gvp->inhcount = 0;
gvp->instpermsec = 2000;
gvp->livereglim = 040;
gvp->mapvacalls = 0;
gvp->mapvamisses = 0;
/* ignore SIGPIPE signals (sockets) or they'll kill the emulator */