int body(void)
{
char c, str[64];
printf("proc %d resumes to body()\n\r", running->pid);
showLists();
while(1)
{
printf("\rproc %d running : enter a key [s|f|z|a|w|q|u|p|l]: ", running->pid);
c = getc();
printf("%c\n\r", c);
switch(c)
{
case 's': tswitch(); break;
case 'q': do_exit(); break;
case 'f': kfork("/bin/u1"); break;
case 'z': do_sleep(); break;
case 'a': do_wake(); break;
case 'w': do_wait(); break;
case 'u': goUmode(); break;
case 'p': do_ps(); break;
case 'l': showLists();break;
default: break;
}
}
}
int body()
{
char c;
printf("proc %d resumes to body()\n", running->pid);
while(1){
printf("-----------------------------------------\n");
printList("freelist ", freeList);
printList("readyQueue", readyQueue);
printList("sleepList ", sleepList);
printf("-----------------------------------------\n");
printf("proc %d running: parent = %d enter a char [s|f|w|q|u] : ",
running->pid, running->parent->pid);
c = getc(); printf("%c\n", c);
switch(c){
case 's' : do_tswitch(); break;
case 'f' : do_kfork(); break;
case 'w' : do_wait(); break;
case 'q' : do_exit(); break;
case 'u' : goUmode(); break;
}
}
}
int kexec(char filename[15])
{
int segment, i;
if(strcmp(filename, "/bin/u1") != 0 && strcmp(filename, "/bin/u2") != 0)
{
printf("File not found.\n");
return -1;
}
segment = 0x1000*(running->pid+1);
// We load the new file
load(filename, segment);
// We now fix the stack
// (LOW) uSP | by INT 80 | HIGH
// ---------------------------------------------------------------------
// |uDS|uES| di| si| bp| dx| cx| bx| ax|uPC|uCS|flag| XXXXXX
// ---------------------------------------------------------------------
// -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 | 0
// (a). re-establish ustack to the very high end of the segment.
// (b). "pretend" it had done INT 80 from (virtual address) 0:
// (c). fill in uCS, uDS, uES in ustack
// (d). execute from VA=0 ==> uPC=0, uFLAG=0x0200,
// all other registers = 0;
// (e). fix proc.uSP to point at the current ustack TOP (-24)
// Finally, return from exec() ==> goUmode().
// Reset all registers to 0.
for(i = 1; i <= 12; i++)
{
put_word(0, segment, 2*-i);
}
// uCS
put_word(segment, segment, 2*-2);
// uDS
put_word(segment, segment, 2*-12);
// uES
put_word(segment, segment, 2*-11);
// uPC
put_word(0, segment, 2*-3);
// uFLAG
put_word(0x0200, segment, 2*-1);
// Correct usp to point to top of stack
running->usp = 2*-12;
return goUmode();
}
int body()
{
char c, CR, buf[64];
while(1){
printf("=======================================\n");
printQueue(readyQueue);
printf("proc %d %s in Kmode\n", running->pid, running->name);
printf("input a command (s|f|u|q|i|o) : ");
c=getc(); putc(c); CR=getc(); putc(CR);
switch(c){
case 's' : tswitch(); break;
case 'u' : printf("\nProc %d ready to go U mode\n", running->pid);
goUmode(); break;
case 'f': fork(); break;
case 'q' : kexit(); break;
case 'i' : iline(); break;
case 'o' : oline(); break;
}
}
}
int body()
{
char c;
printf("proc %d resumes to body()\n", running->pid);
while(1)
{
printf("-----------------------------------------\n");
//print freeList;
printf("Free List:\n");
printQueue(freeList);
// print readyQueue;
printf("Ready Queue:\n");
printQueue(readyQueue);
// print sleepList;
printf("Sleep List:\n");
// printSleepQueue(sleepList);
printSleepQueue(sleepList);
printf("-----------------------------------------\n");
printf("proc %d[%d] running: parent=%d\n",
running->pid, running->priority, running->ppid);
printf("type a command [s|f|q|w| u ] : ");
c = getc();
printf("%c\n", c);
switch(c){
case 's' : do_tswitch(); break;
case 'f' : do_kfork(); break;
case 'q' : do_exit(); break;
case 'w' : do_wait(); break;
case 'u' :
// printf("Running->uss: %x\n", running->uss);
// printf("Running->usp: %x\n", running->usp);
goUmode();
break; // let process goUmode
}
}
}
int body() {
char c;
printf("proc %d resumes to body()\n", running->pid);
while(1) {
printLists();
printf("proc %d[%d] running: parent=%d\n",
running->pid, running->priority, running->ppid);
printf("enter a char [Debug|Fork|Umode|Ps|Quit|Sleep|Wait] : ");
c = getc(); printf("%c\n", c);
switch(c) {
case 's' : tswitch(); break;
case 'f' : kfork(); break;
case 'q' : kexit(); break;
case 'p' : kps(); break;
case 'w' : kwait(); break;
case 'd' : debugStatement(); break;
case 'u' : goUmode(); break;
}
}
}
