void start(uint32_t* modulep, void* physbase, void* physfree)
{
clear_screen();
// printf("Pysfree in mainbefore:BASE:%x:%x", physfree, physbase);
while(modulep[0] != 0x9001) modulep += modulep[1]+2;
for(smap = (struct smap_t*)(modulep+2); smap < (struct smap_t*)((char*)modulep+modulep[1]+2*4); ++smap) {
if (smap->type == 1 /* memory */ && smap->length != 0) {
// printf("Available Physical Memory [%x-%x]\n", smap->base, smap->base + smap->length);
free_page_list(smap, physbase, physfree); // Creates free page list (linked list implementation)
}
}
// printf("tarfs in [%p:%p]\n", &_binary_tarfs_start, &_binary_tarfs_end);
// kernel starts here
physfree += 1048576; // increasing physfree by 1 MB accomodating free page list
// uint64_t cur_VK = ((uint64_t )physfree + 0xffffffff80000000); // Free Virtual Memory above Kernel starts from here
// uint64_t cur_PK = 0x2097152; // Starts at 2 MB mark (abhi confirm)
// uint64_t pbase99 = (uint64_t)((uint64_t)physfree + 0xffffffff80000000);
// uint64_t pid_bitmap[32]= {0};
// printf("PhysFREE in mainnow:%x", physfree);
// printf("\nFREE_PAGE:%x:%x:%x", (uint64_t *) get_page());
// printf("\n VK:%x", cur_VK);
kern_pt((void *) &kernmem, (uint64_t)physbase, (uint64_t)physfree); // Mapping Kernel to new Page Table
init_VM((uint64_t) physfree);
init_task();
init_fdtable();
clear_screen();
init_shell();
// uint64_t te = 0xFFFF00FF80000000;
// *te = 1;
// void *te = (void *) 0xFFFFFFFF80000000;
// void *te = (void *) 0xFFFF000080000000;
// uint64_t te =(uint64_t) (0xffffffff80000000 + physbase);
// uint64_t te = 0xFFFFFEFF80000000;
// self_refrence(te);
// call_first();
//update physfree
// printf("\n CHAR:%c:%s:%d:\n:%x:%p", 'A', "STONY !@#$ BROOK", 9999, 0xFFFF1B, &(stack));
// printf("\n STRING:%s","ABHIROOP DABRAL");
// printf("\n INT:%d", 0xFFC);
// printf("\n HEX:%x", 510);
// printf("\n PT:%p",(uint64_t *) te);
while(1);
}
int main(int argc, char *argv[]) {
VM vm;
FILE *input;
if(argc<2) {
printf("%s wscode\n", argv[0]);
return 0;
}
if(init_VM(&vm)==NULL) {
puts("fail init VM");
return 1;
}
if((input = fopen(argv[1], "r"))==NULL) {
printf("cannot open %s\n", argv[1]);
return 1;
}
init_Program(&(vm.program), INIT_PROGRAM_SIZE);
read_Program(&(vm.program), input);
exec_Program(&(vm));
return 0;
}
