Subversion Repositories HelenOS-historic

Compare Revisions

Ignore whitespace Rev 964 → Rev 965

/kernel/trunk/generic/src/syscall/syscall.c
60,57 → 60,82
* @return Call identification, returns -1 on fatal error,
-2 on 'Too many async request, handle answers first
*/
static __native sys_ipc_call_sync(__native phoneid, __native arg1,
__native arg2, __native *respdata)
static __native sys_ipc_call_sync(__native phoneid, __native method,
__native arg1, __native *data)
{
call_t *call;
call_t call;
phone_t *phone;
/* Special answerbox for synchronous messages */
 
if (phoneid >= IPC_MAX_PHONES)
return -ENOENT;
return IPC_CALLRET_FATAL;
 
phone = &TASK->phones[phoneid];
if (!phone->callee)
return -ENOENT;
return IPC_CALLRET_FATAL;
 
call = ipc_call_alloc();
call->data[0] = arg1;
call->data[1] = arg2;
ipc_call_init(&call);
IPC_SET_METHOD(call.data, method);
IPC_SET_ARG1(call.data, arg1);
ipc_call_sync(phone, call);
ipc_call_sync(phone, &call);
 
copy_to_uspace(respdata, &call->data, sizeof(__native) * IPC_CALL_LEN);
copy_to_uspace(data, &call.data, sizeof(call.data));
 
return 0;
}
 
static __native sys_ipc_call_sync_medium(__native phoneid, __native *data)
{
call_t call;
phone_t *phone;
/* Special answerbox for synchronous messages */
 
if (phoneid >= IPC_MAX_PHONES)
return IPC_CALLRET_FATAL;
 
phone = &TASK->phones[phoneid];
if (!phone->callee)
return IPC_CALLRET_FATAL;
 
ipc_call_init(&call);
copy_from_uspace(&call.data, data, sizeof(call.data));
ipc_call_sync(phone, &call);
 
copy_to_uspace(data, &call.data, sizeof(call.data));
 
return 0;
}
 
 
/** Send an asynchronous call over ipc
*
* @return Call identification, returns -1 on fatal error,
-2 on 'Too many async request, handle answers first
*/
static __native sys_ipc_call_async(__native phoneid, __native arg1,
__native arg2)
static __native sys_ipc_call_async(__native phoneid, __native method,
__native arg1, __native arg2)
{
call_t *call;
phone_t *phone;
 
if (phoneid >= IPC_MAX_PHONES)
return -ENOENT;
return IPC_CALLRET_FATAL;
 
phone = &TASK->phones[phoneid];
if (!phone->callee)
return -ENOENT;
return IPC_CALLRET_FATAL;
 
 
/* TODO: Check that we did not exceed system imposed maximum
* of asynchrnously sent messages
* - the userspace should be able to handle it correctly
*/
call = ipc_call_alloc();
call->data[0] = arg1;
call->data[1] = arg2;
IPC_SET_METHOD(call->data, method);
IPC_SET_ARG1(call->data, arg1);
IPC_SET_ARG2(call->data, arg2);
 
ipc_call(phone, call);
 
return (__native) call;
117,7 → 142,8
}
 
/** Send IPC answer */
static __native sys_ipc_answer(__native callid, __native arg1, __native arg2)
static __native sys_ipc_answer(__native callid, __native retval, __native arg1,
__native arg2)
{
call_t *call;
 
126,8 → 152,9
/* TODO: Check that the callid is in the dispatch table */
call = (call_t *) callid;
 
call->data[0] = arg1;
call->data[1] = arg2;
IPC_SET_RETVAL(call->data, retval);
IPC_SET_ARG1(call->data, arg1);
IPC_SET_ARG2(call->data, arg2);
 
ipc_answer(&TASK->answerbox, call);
return 0;
144,10 → 171,13
call_t *call;
call = ipc_wait_for_call(&TASK->answerbox, flags);
copy_to_uspace(calldata, &call->data, sizeof(__native) * IPC_CALL_LEN);
 
if (call->flags & IPC_CALL_ANSWERED)
return ((__native)call) | 1;
copy_to_uspace(calldata, &call->data, sizeof(call->data));
if (call->flags & IPC_CALL_ANSWERED) {
ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));
ipc_call_free(call);
return ((__native)call) | IPC_CALLID_ANSWERED;
}
return (__native)call;
}
 
156,6 → 186,7
sys_ctl,
sys_io,
sys_ipc_call_sync,
sys_ipc_call_sync_medium,
sys_ipc_call_async,
sys_ipc_answer,
sys_ipc_wait_for_call