void umain(int argc, char **argv)
{
sys_env_set_priority(0, PRIORITY_SUPER);
int i;
int n = 3;
for (i = 0; i < n; i++) {
cprintf("[%08x] Super Priority Process is Running\n", sys_getenvid());
}
return;
}
// Dispatches to the correct kernel function, passing the arguments.
int32_t
syscall(uint32_t syscallno, uint32_t a1, uint32_t a2, uint32_t a3, uint32_t a4, uint32_t a5)
{
// Call the function corresponding to the 'syscallno' parameter.
// Return any appropriate return value.
// LAB 3: Your code here.
switch (syscallno){
case SYS_getenvid:
return sys_getenvid();
case SYS_cputs:
sys_cputs((const char*)a1, a2);
return 0;
case SYS_cgetc:
return sys_cgetc();
case SYS_env_destroy:
return sys_env_destroy(a1);
case SYS_map_kernel_page:
return sys_map_kernel_page((void*)a1, (void*)a2);
case SYS_sbrk:
return sys_sbrk(a1);
case SYS_yield:
sys_yield();
return 0;
case SYS_exofork:
return sys_exofork();
case SYS_env_set_status:
return sys_env_set_status((envid_t)a1, (int)a2);
case SYS_page_alloc:
return sys_page_alloc((envid_t)a1, (void *)a2,
(int)a3);
case SYS_page_map:
return sys_page_map((envid_t)*((uint32_t*)a1),
(void*)*((uint32_t*)a1+1),
(envid_t)*((uint32_t*)a1+2),
(void*)*((uint32_t*)a1+3),
(int)*((uint32_t*)a1+4));
case SYS_page_unmap:
return sys_page_unmap((envid_t)a1, (void*)a2);
case SYS_env_set_priority:
return sys_env_set_priority((envid_t)a1, (int) a2);
case SYS_env_set_pgfault_upcall:
return sys_env_set_pgfault_upcall((envid_t)a1,
(void*)a2);
case SYS_ipc_recv:
return sys_ipc_recv((void*)a1);
case SYS_ipc_try_send:
return sys_ipc_try_send((envid_t)a1, a2,
(void*)a3, (int)a4);
default:
return -E_INVAL;
}
}