// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
//panic("ipc_send not implemented");
int result;
if(pg == NULL)
{
result=sys_ipc_try_send(to_env, val, (void *)UTOP, perm);
}
else
{
result=sys_ipc_try_send(to_env, val, pg, perm);
}
while(result < 0)
{
if(result != -E_IPC_NOT_RECV)
{
panic ("ipc send error!");
}
sys_yield ();
if(pg == NULL)
{
result=sys_ipc_try_send(to_env, val, (void *)UTOP, perm);
}
else
{
result=sys_ipc_try_send(to_env, val, pg, perm);
}
}
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
int r;
if (pg == NULL)
pg = (void *)UTOP;
do {
int r = sys_ipc_try_send(to_env, val, pg, perm);
switch (r) {
case 0:
case 1:
return;
case -E_IPC_NOT_RECV:
sys_yield();
continue;
default:
panic("sys_ipc_try_send(%08x, %u, %08x, %d) failed: %e\n",
to_env, val, pg, perm, r);
}
} while (1);
}
void
input(envid_t ns_envid)
{
binaryname = "ns_input";
// LAB 6: Your code here:
// - read a packet from the device driver
// - send it to the network server
// Hint: When you IPC a page to the network server, it will be
// reading from it for a while, so don't immediately receive
// another packet in to the same physical page.
int RPKT_SIZE = 2048;
int lengthOfPacket = RPKT_SIZE - 1;
int r = 0;
char buffer[RPKT_SIZE];
while(1){
while((r = sys_receive(buffer,&lengthOfPacket))<0){
sys_yield();
}
while((r = sys_page_alloc(0, &nsipcbuf, PTE_P|PTE_U|PTE_W))<0);
nsipcbuf.pkt.jp_len = lengthOfPacket;
memmove(nsipcbuf.pkt.jp_data, buffer, lengthOfPacket);
while((r = sys_ipc_try_send(ns_envid, NSREQ_INPUT, &nsipcbuf, PTE_P|PTE_U|PTE_W)) < 0);
}
}
// Send 'val' (and 'pg' with 'perm', assuming 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
int ret;
void * srcva;
if(pg == 0)
srcva = (void*)UTOP;
else
srcva = pg;
while(1)
{
ret = sys_ipc_try_send(to_env,val,srcva,perm);
if(ret == 0 || ret == 1)
{
//cprintf("return 0\n");
sys_yield();
break;
}
else if(ret == -E_IPC_NOT_RECV)
{
//cprintf("ipc not recv\n");
sys_yield();
continue;
}
else
panic("error occur in ipc send:%e",ret);
}
//cprintf("return from ipc send\n");
//panic("ipc_send not implemented");
}
// 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.
// panic("syscall not implemented");
switch (syscallno) {
case SYS_cputs:
sys_cputs((const 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(a1);
case SYS_yield:
sys_yield();
return 0;
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_exofork:
return sys_exofork();
case SYS_env_set_status:
return sys_env_set_status((envid_t)a1, 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, a4);
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_packet_transmit:
return sys_packet_transmit((char*)a1,(size_t)a2);
case SYS_packet_receive:
return sys_packet_receive((char *)a1);
//lab 7 code from here
case SYS_insmod:
return sys_insmod((char *)a1, (char *)a2,(char *)a3);
case SYS_rmmod:
return sys_rmmod((char *)a1);
case SYS_lsmod:
return sys_lsmod();
case SYS_depmod:
return sys_depmod((char *)a1);
//lab7 code ends here
default:
return -E_NO_SYS;
}
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_try_send a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
struct Env *env;
int r;
void *srcva;
if (pg == NULL) {
srcva = (void *)~0;
} else {
srcva = pg;
}
IPC_DEBUG("ipc_send: perm = %d\n", perm);
while ((r = sys_ipc_try_send(to_env, val, srcva, perm)) != 0) {
if (r != -E_IPC_NOT_RECV) {
panic("ipc_send: sys_ipc_try_send erro %e\n", r);
}
}
// I tested and found out a sys_yield() here actually made things slower!
// sys_yield();
return;
}
void
input(envid_t ns_envid)
{
binaryname = "ns_input";
// LAB 6: Your code here:
// - read a packet from the device driver
// - send it to the network server
// Hint: When you IPC a page to the network server, it will be
// reading from it for a while, so don't immediately receive
// another packet in to the same physical page.
uint8_t data[2048];
int length, r;
for (;;) {
while ((length = sys_pkt_receive(data)) < 0)
sys_yield();
while (sys_page_alloc(0, &nsipcbuf, PTE_P | PTE_W | PTE_U) < 0)
sys_yield();
nsipcbuf.pkt.jp_len = length;
memmove(nsipcbuf.pkt.jp_data, data, length);
while (sys_ipc_try_send(ns_envid, NSREQ_INPUT, &nsipcbuf, PTE_P | PTE_W | PTE_U) < 0)
sys_yield();
}
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
//panic("ipc_send not implemented");
/* lj */
int ret = 0;
void *addr = NULL;
addr = pg ? pg : (void *)-1;
//cprintf("%x->%x [%d]\n", thisenv->env_id, to_env, val);
while (1) {
if(-E_IPC_NOT_RECV == ret) {
sys_yield();
}
ret = sys_ipc_try_send(to_env, val, addr, perm);
if(0 == ret) {
break;
}
else if(-E_IPC_NOT_RECV == ret) {
//cprintf("%x continue\n", thisenv->env_id);
continue;
}
else if(ret < 0) {
panic("ipc_send error:%e", ret);
}
}
}
// 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.
curenv->env_syscalls++;
switch(syscallno){
case SYS_cputs:
sys_cputs((char *)a1, (size_t)a2);break;
case SYS_cgetc:
sys_cgetc();break;
case SYS_getenvid:
return sys_getenvid();
case SYS_env_destroy:
return sys_env_destroy((envid_t)a1);
case SYS_dump_env:
sys_dump_env();break;
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_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_env_set_pgfault_upcall:
return sys_env_set_pgfault_upcall((envid_t)a1, (void *)a2);
case SYS_yield:
sys_yield();break;//new add syscall for lab4;
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_ide_read:
sys_ide_read((uint32_t)a1, (void *)a2, (size_t)a3);
break;
case SYS_ide_write:
sys_ide_write((uint32_t)a1, (void *)a2, (size_t)a3);
break;
case SYS_time_msec:
return sys_time_msec();
case NSYSCALLS:
break;
default:
return -E_INVAL;
}
return 0;
//panic("syscall not implemented");
}
// 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.
int32_t ret = -E_INVAL;
switch(syscallno) {
case SYS_cputs:
sys_cputs((char *)a1, a2);
break;
case SYS_cgetc:
ret = sys_cgetc();
break;
case SYS_getenvid:
ret = sys_getenvid();
break;
case SYS_env_destroy:
ret = sys_env_destroy(a1);
break;
case SYS_yield:
sys_yield();
ret = 0;
break;
case SYS_map_kernel_page:
ret = sys_map_kernel_page((void *)a1, (void *)a2);
break;
case SYS_sbrk:
ret = sys_sbrk(a1);
break;
case SYS_exofork:
ret = sys_exofork();
break;
case SYS_env_set_status:
ret = sys_env_set_status(a1,a2);
break;
case SYS_page_alloc:
ret = sys_page_alloc(a1,(void*)a2,a3);
break;
case SYS_page_map:
ret = sys_page_map(a1,(void*)a2,a3,(void*)a4,a5);
break;
case SYS_page_unmap:
ret = sys_page_unmap(a1,(void*)a2);
break;
case SYS_env_set_pgfault_upcall:
ret = sys_env_set_pgfault_upcall(a1,(void*)a2);
break;
case SYS_ipc_try_send:
ret = sys_ipc_try_send(a1,a2,(void*)a3,a4);
break;
case SYS_ipc_recv:
ret = sys_ipc_recv((void*)a1);
}
return ret;
// panic("syscall not implemented");
}
// 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.
/* lj */
int ret = 0;
switch(syscallno) {
case SYS_cputs:
sys_cputs((const char *)a1, a2);
break;
case SYS_cgetc:
ret = sys_cgetc();
break;
case SYS_getenvid:
ret = sys_getenvid();
break;
case SYS_env_destroy:
ret = sys_env_destroy(a1);
break;
case SYS_yield:
sys_yield();
break;
case SYS_exofork:
ret = sys_exofork();
break;
case SYS_env_set_status:
ret = sys_env_set_status((envid_t)a1, a2);
break;
case SYS_page_alloc:
ret = sys_page_alloc((envid_t)a1, (void *)a2, a3);
break;
case SYS_page_map:
ret = sys_page_map((envid_t)a1, (void *)a2, (envid_t)a3, (void *)a4, a5);
break;
case SYS_page_unmap:
ret = sys_page_unmap((envid_t)a1, (void *)a2);
break;
case SYS_env_set_pgfault_upcall:
ret = sys_env_set_pgfault_upcall((envid_t)a1, (void *)a2);
break;
case SYS_ipc_try_send:
ret = sys_ipc_try_send((envid_t)a1, a2, (void *)a3, a4);
break;
case SYS_ipc_recv:
ret = sys_ipc_recv((void *)a1);
break;
default:
ret = -E_INVAL;
break;
}
//panic("syscall not implemented");
//cprintf("%d return to user %d\n", syscallno, ret);
return ret;
}
// Send 'val' (and 'pg' with 'perm', assuming 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
int r;
while (( r = sys_ipc_try_send(to_env, val, pg, perm)) == -E_IPC_NOT_RECV) {
sys_yield();
}
if (r < 0)
panic("icp_send %e", r);
}
// 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.
int32_t r =0;
switch(syscallno){
case SYS_cputs:
sys_cputs((const char*)a1,(size_t)a2);
break;
case SYS_cgetc:
r = sys_cgetc();
break;
case SYS_getenvid:
r = sys_getenvid();
break;
case SYS_env_destroy:
r = sys_env_destroy((envid_t)a1);
break;
case SYS_yield:
sys_yield();
r =0;
break;
case SYS_exofork:
r = sys_exofork();
break;
case SYS_env_set_status:
r = sys_env_set_status((envid_t)a1,(int)a2);
break;
case SYS_page_alloc:
r = sys_page_alloc((envid_t)a1 ,(void *)a2, (int)a3);
break;
case SYS_page_map:
r = sys_page_map((envid_t)a1, (void *)a2, (envid_t)a3, (void *)a4, (int)a5);
break;
case SYS_page_unmap:
r = sys_page_unmap((envid_t)a1,(void *)a2);
break;
case SYS_env_set_pgfault_upcall:
r = sys_env_set_pgfault_upcall((envid_t)a1, (void *)a2);
break;
case SYS_ipc_try_send:
r = sys_ipc_try_send((envid_t)a1, (uint32_t)a2, (void *)a3, (unsigned int)a4);
break;
case SYS_ipc_recv:
r = sys_ipc_recv((void *)a1);
break;
default:
r = -E_INVAL;
}
return r;
panic("syscall not implemented");
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_try_send a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
// panic("ipc_send not implemented");
int r;
void *srcva = pg?pg:(void*)UTOP;
while ((r = sys_ipc_try_send(to_env, val, srcva, perm))) {
if (r != -E_IPC_NOT_RECV) panic("sys_ipc_try_send fail:%e, pg:%#0x, perm:%d\n", r, (int)pg, perm);
sys_yield();
}
}
// Send 'val' (and 'pg' with 'perm', assuming 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
int ret;
dprintk("[IPC] send from %08x to %08x, value=%d, pg=%p, perm=%x\n",
sys_getenvid(), to_env, val, pg, perm);
while (1) {
if (pg == NULL) {
/* TODO: allow pg=0 */
ret = sys_ipc_try_send(to_env, val, (void *) -1, 0);
} else {
ret = sys_ipc_try_send(to_env, val, pg, perm);
}
if (ret == 0 || ret == 1)
break;
if (ret != -E_IPC_NOT_RECV)
panic("ipc_send error %e", ret);
}
}
// 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.
// panic("syscall not implemented");
switch (syscallno) {
case SYS_cputs:
sys_cputs((char *)a1, a2);
break;
case SYS_cgetc:
return sys_cgetc();
case SYS_env_destroy:
return sys_env_destroy(a1);
case SYS_getenvid:
return sys_getenvid();
case SYS_yield:
sys_yield();
break;
case SYS_page_alloc:
return sys_page_alloc(a1, (void *)a2, a3);
case SYS_page_map:
return sys_page_map(a1, (void *)a2, a3, (void *)a4, a5);
case SYS_page_unmap:
return sys_page_unmap(a1, (void *)a2);
case SYS_env_set_status:
return sys_env_set_status(a1, a2);
case SYS_exofork:
return sys_exofork();
case SYS_env_set_pgfault_upcall:
return sys_env_set_pgfault_upcall(a1, (void *)a2);
case SYS_ipc_try_send:
return sys_ipc_try_send(a1, a2, (void*)a3, a4);
case SYS_ipc_recv:
return sys_ipc_recv((void*)a1);
case SYS_env_set_trapframe:
return sys_env_set_trapframe(a1, (struct Trapframe *)a2);
case SYS_time_msec:
return sys_time_msec();
case SYS_trans_pkt:
return sys_trans_pkt((void*)a1, a2);
case SYS_recv_pkt:
return sys_recv_pkt((void *)a1, (size_t *)a2);
default:
return -E_INVAL;
}
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.
// 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;
}
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_try_send a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
int result = -E_IPC_NOT_RECV ;
if ( pg )
result = sys_ipc_try_send( to_env , val , pg , perm ) ;
else
result = sys_ipc_try_send( to_env , val , (void*)UTOP , perm ) ;
if ( result == 0 ) return ;
if ( result == -E_IPC_NOT_RECV ) {
if ( pg )
result = sys_ipc_try_send( to_env , val , pg , perm ) ;
else
result = sys_ipc_try_send( to_env , val , (void*)UTOP , perm ) ;
if ( result == 0 ) return ;
}
panic("ipc_send error %e.",result);
}
// 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");
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
int r;
if(!pg)
pg = (void*)UTOP;
while((r = sys_ipc_try_send(to_env,val,pg,perm)) != 0)
{
if(/* r < 0 && */r != -E_IPC_NOT_RECV )
panic ("ipc: sys try send failed : %e", r);
}
sys_yield();
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
//panic("ipc_send not implemented");
int ret;
pg = (pg == NULL ? (void*)UTOP : pg);
while((ret = sys_ipc_try_send(to_env,val,pg,perm))<0) {
if(ret != -E_IPC_NOT_RECV)
panic("sys_ipc_try_send in ipc_send: %e",ret);
//cprintf("Sending fialeddddddddddddddd\n\n\n\n\n");
sys_yield();
}
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
//cprintf("to_env: %08x from_env: %08x\n", to_env, thisenv->env_id);
int ret = -E_IPC_NOT_RECV;
if (!pg) pg = (void *)UTOP;
while (true) {
ret = sys_ipc_try_send(to_env,val,pg,perm);
if (ret == 0) return;
if (ret != -E_IPC_NOT_RECV) break;
sys_yield();
}
panic("Send failed: %e", ret);
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
int r;
if(pg == NULL)
pg = (void *)~0x0;
while((r = sys_ipc_try_send(to_env, val, pg, perm)) < 0){
if(r != -E_IPC_NOT_RECV)
panic("Send message error %e\n",r);
sys_yield();
}
// panic("ipc_send not implemented");
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
int r;
if (pg == NULL)
pg = (void*)UTOP;
while ((r = sys_ipc_try_send(to_env, val, pg, perm)) < 0)
{
if(r != -E_IPC_NOT_RECV)
panic("Panic in lib ipc.c : ipc_send() \n");
sys_yield();
}
//panic("ipc_send not implemented");
}
// Send 'val' (and 'pg' with 'perm', assuming 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
int r;
while ((r = sys_ipc_try_send(to_env, val, pg != NULL ? pg : (void *)UTOP, perm)) < 0){
if (r != -E_IPC_NOT_RECV){
panic("lib ipc_send failed. returned %d\n", r);
}
sys_yield();
}
// panic("ipc_send not implemented");
}
// 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((const char *) a1, a2);
return 0;
case (SYS_cgetc):
return sys_cgetc();
case (SYS_getenvid):
return sys_getenvid();
case (SYS_env_destroy):
return sys_env_destroy(a1, a2);
case (SYS_yield):
sys_yield();
return 0;
case (SYS_exofork):
return sys_exofork();
case (SYS_env_set_status):
return sys_env_set_status(a1, a2);
case (SYS_page_alloc):
return sys_page_alloc(a1, (void *) a2, a3);
case (SYS_page_map):
return sys_page_map(a1, (void *) a2, a3, (void *) a4, a5);
case (SYS_page_unmap):
return sys_page_unmap(a1, (void *) a2);
case (SYS_env_set_pgfault_upcall):
return sys_env_set_pgfault_upcall(a1, (void *) a2);
case (SYS_ipc_try_send):
return sys_ipc_try_send(a1, a2, (void *) a3, a4);
case (SYS_ipc_recv):
return sys_ipc_recv((void *) a1);
case (SYS_env_set_trapframe):
return sys_env_set_trapframe(a1, (struct Trapframe *) a2);
case (SYS_time_msec):
return sys_time_msec();
case (SYS_e1000_transmit):
return sys_e1000_transmit(a1, (char *) a2, a3);
default:
return -E_INVAL;
}
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
if(!pg)
pg = (void*)0xFFFFFFFF;
// No need to loop due to LAB 4 CHALLENGE
int ret;
ret = sys_ipc_try_send(to_env, val, pg, perm);
if(ret != 0)
panic("ipc_send got unknown error %d: %e\n", ret, ret);
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void *srcva = pg ? pg : (void *)UTOP;
int r;
while (1) {
r = sys_ipc_try_send(to_env, val, srcva, perm);
if (r == -E_IPC_NOT_RECV)
// Use sys_yield() to be CPU-friendly.
sys_yield();
else if (r < 0)
panic("sys_ipc_try_send: %e\n", r);
else
return;
}
}
// Dispatches to the correct kernel function, passing the arguments.
uint32_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( (const char *)a1, a2);
return 0;
case SYS_cgetc:
return sys_cgetc();
case SYS_getenvid:
return sys_getenvid();
case SYS_env_destroy:
return sys_env_destroy(a1);
case SYS_yield:
sys_yield();
return 0;
case SYS_exofork:
return sys_exofork();
case SYS_env_set_status:
return sys_env_set_status(a1, a2);
case SYS_page_alloc:
return sys_page_alloc(a1, (void *)a2, a3);
case SYS_page_map:
return sys_page_map(a1, (void *)a2, a3, (void *)a4, a5);
case SYS_env_set_trapframe:
return sys_env_set_trapframe(a1, (struct Trapframe *)a2);
case SYS_page_unmap:
return sys_page_unmap(a1, (void *)a2);
case SYS_env_set_pgfault_upcall:
return sys_env_set_pgfault_upcall(a1, (void *)a2);
case SYS_ipc_try_send:
return sys_ipc_try_send(a1, a2, (void *)a3, a4);
case SYS_ipc_recv:
return sys_ipc_recv((void *)a1);
default: panic("this syscall ( %d )is not yet implemented", syscallno);
}
}
// Send 'val' (and 'pg' with 'perm', if 'pg' is nonnull) to 'toenv'.
// This function keeps trying until it succeeds.
// It should panic() on any error other than -E_IPC_NOT_RECV.
//
// Hint:
// Use sys_yield() to be CPU-friendly.
// If 'pg' is null, pass sys_ipc_recv a value that it will understand
// as meaning "no page". (Zero is not the right value.)
void
ipc_send(envid_t to_env, uint32_t val, void *pg, int perm)
{
// LAB 4: Your code here.
// seanyliu
//panic("ipc_send not implemented");
int r;
if (pg == NULL) {
pg = (void *) UTOP;
perm = 0;
}
while (1) {
r = sys_ipc_try_send(to_env, val, pg, perm);
if (r == -E_IPC_NOT_RECV) {
sys_yield();
}
else if (r < 0) panic ("ipc_send: failed to send: %d", r);
else break;
}
}
