// 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.
// My code: gmenghani
// An invalid system call
if(syscallno >= NSYSCALLS)
return -E_INVAL;
switch(syscallno) {
case SYS_cputs: sys_cputs((char *) a1, (size_t)a2);
return 0;
case SYS_cgetc: return sys_cgetc();
case SYS_getenvid: return sys_getenvid();
case SYS_env_destroy: return sys_env_destroy((envid_t)a1);
case SYS_yield : sys_yield(); break;
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)a1, (void*)a2, (envid_t)a3, (void*)a5, (int)a4);
case SYS_page_unmap : return sys_page_unmap((envid_t)a1, (void*)a2);
// For Challenge problem 1 Lab 4a
case SYS_env_set_nice: sys_env_set_nice(a1);
return 0;
case SYS_env_set_pgfault_upcall: sys_env_set_pgfault_upcall((envid_t)a1, (void *)a2);
return 0;
case SYS_ipc_try_send: return sys_ipc_try_send((envid_t)a1, (uint32_t)a2, (void*)a3, (unsigned)a5);
case SYS_ipc_recv: return sys_ipc_recv((void*)a1);
case SYS_env_set_trapframe: return sys_env_set_trapframe((envid_t)a1, (struct Trapframe*)a2);
case SYS_time_msec: return sys_time_msec();
case SYS_net_send: return sys_net_send((void*)a1, (uint32_t) a2);
case SYS_net_recv: return sys_net_recv((void*)a1, (uint16_t*) a2);
}
return 0;
}
// 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.
switch(syscallno){
case SYS_cputs:
user_mem_assert(curenv, (void *)a1, a2, PTE_U);
sys_cputs((char *)a1, a2);
return 0;
break;
case SYS_cgetc:
return sys_cgetc();
break;
case SYS_getenvid:
return sys_getenvid();
break;
case SYS_getenv_parent_id:
return sys_getenv_parent_id(a1);
break;
case SYS_env_destroy:
return sys_env_destroy(a1);
break;
case SYS_page_alloc:
return sys_page_alloc(a1, (void *)a2, a3);
break;
case SYS_page_map:
return sys_page_map(a1, (void *)a2, a3, (void *)a4, a5);
break;
case SYS_page_unmap:
return sys_page_unmap(a1, (void *)a2);
break;
case SYS_exofork:
return sys_exofork();
break;
case SYS_env_set_status:
return sys_env_set_status(a1, a2);
break;
case SYS_env_set_trapframe:
return sys_env_set_trapframe(a1, (struct Trapframe *)a2);
break;
case SYS_env_set_pgfault_upcall:
return sys_env_set_pgfault_upcall(a1, (void *)a2);
break;
case SYS_env_get_curdir:
return sys_env_get_curdir((envid_t)a1, (char *)a2);
break;
case SYS_env_set_curdir:
return sys_env_set_curdir((envid_t)a1, (char *)a2);
break;
case SYS_yield:
sys_yield();
break;
case SYS_ipc_try_send:
return sys_ipc_try_send(a1, a2, (void *)a3, a4);
break;
case SYS_ipc_recv:
return sys_ipc_recv((void *)a1);
break;
case SYS_time_msec:
return sys_time_msec();
break;
case SYS_net_send:
return sys_net_send((void *)a1, a2);
break;
case SYS_net_recv:
return sys_net_recv((void *)a1, a2);
break;
case NSYSCALLS:
default:
return -E_INVAL;
break;
}
return 0;
}