// Dispatches to the correct kernel function, passing the arguments.
int64_t
syscall(uint64_t syscallno, uint64_t a1, uint64_t a2, uint64_t a3, uint64_t a4, uint64_t a5)
{
// Call the function corresponding to the 'syscallno' parameter.
// Return any appropriate return value.
// LAB 3: Your code here.
uint64_t retval = 0;
switch (syscallno) {
case SYS_cputs:
sys_cputs((char *) a1, (size_t) a2);
return retval;
case SYS_cgetc:
return (int64_t) sys_cgetc();
case SYS_getenvid:
return (int64_t) sys_getenvid();
case SYS_env_destroy:
return (int64_t) sys_env_destroy((envid_t) a1);
case SYS_yield:
sys_yield();
return retval;
case SYS_exofork:
return (int64_t)sys_exofork();
case SYS_page_alloc:
return (int64_t)sys_page_alloc((envid_t)a1, (void *)a2, (int)a3);
case SYS_page_map:
return (int64_t)sys_page_map((envid_t)a1, (void *)a2, (envid_t)a3, (void *)a4, (int)a5);
case SYS_page_unmap:
return (int64_t)sys_page_unmap((envid_t)a1, (void *)a2);
case SYS_env_set_status:
return (int64_t)sys_env_set_status((envid_t)a1, (int)a2);
case SYS_env_set_pgfault_upcall:
return (int64_t)sys_env_set_pgfault_upcall((envid_t)a1, (void *)a2);
case SYS_ipc_try_send:
return (int64_t) sys_ipc_try_send((envid_t) a1, (uint32_t) a2, (void *) a3, (unsigned) a4);
case SYS_ipc_recv:
return (int64_t)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_try_send:
return sys_net_try_send((char *) a1, (int) a2);
case SYS_net_try_receive:
return sys_net_try_receive((char *) a1, (int *) a2);
default:
return -E_INVAL;
}
panic("syscall not implemented");
}
void
output(envid_t ns_envid)
{
binaryname = "ns_output";
// LAB 6: Your code here:
// - read a packet from the network server
// - send the packet to the device driver
int r;
while(1) {
r = sys_ipc_recv(&nsipcbuf);
if ( (thisenv->env_ipc_from != ns_envid) || (thisenv->env_ipc_value != NSREQ_OUTPUT)) {
continue;
}
while ((r = sys_net_try_send(nsipcbuf.pkt.jp_data, nsipcbuf.pkt.jp_len)) != 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.
// LAB 3: Your code here.
switch(syscallno) {
case SYS_cputs:
sys_cputs((char *) a1, (size_t) a2);
break;
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_env_set_trapframe:
return sys_env_set_trapframe((envid_t) a1, (struct Trapframe *) 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 *) a4, (int) a5);
case SYS_page_unmap:
return sys_page_unmap((envid_t) a1, (void *) a2);
case SYS_env_set_pgfault_upcall:
return sys_env_set_pgfault_upcall((envid_t) a1, (void *) a2);
case SYS_ipc_try_send:
return sys_ipc_try_send((envid_t) a1, (uint32_t) a2, (void *) a3, (unsigned) a4);
case SYS_ipc_recv:
return sys_ipc_recv((void *) a1);
case SYS_env_swap:
return sys_env_swap((envid_t) a1);
case SYS_time_msec:
return sys_time_msec();
case SYS_net_try_send:
return sys_net_try_send((char *) a1, (int) a2);
case SYS_net_try_receive:
return sys_net_try_receive((char *) a1, (int *) a2);
case SYS_get_mac:
return sys_get_mac((uint32_t *) a1, (uint32_t *) a2);
case SYS_env_lease:
return sys_env_lease((struct Env*) a1, (envid_t *) a2);
case SYS_copy_mem:
return sys_copy_mem((envid_t) a1, (void *) a2, (void *) a3,
(int) a4, (bool) a5);
case SYS_get_perms:
return sys_get_perms((envid_t) a1, (void *) a2, (int *) a3);
case SYS_env_unsuspend:
return sys_env_unsuspend((envid_t) a1, (uint32_t) a2, (uint32_t) a3);
case SYS_env_set_thisenv:
return sys_env_set_thisenv((envid_t) a1, (void *) a2);
case SYS_migrate:
return sys_migrate((void *) a1);
case SYS_lease_complete:
return sys_lease_complete();
default:
return -E_INVAL;
}
return 0; // for syscall that return void
}
