3 * - Acess kernel emulation on another OS using SDL and UDP
11 #include "../syscalls.h"
14 extern int Threads_Fork(void); // AcessNative only function
17 typedef int (*tSyscallHandler)(Uint *Errno, const char *Format, void *Args, int *Sizes);
20 #define SYSCALL6(_name, _fmtstr, _t0, _t1, _t2, _t3, _t4, _t5, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
21 _t0 a0;_t1 a1;_t2 a2;_t3 a3;_t4 a4;_t5 a5;\
22 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
23 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
24 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
25 a2 = *(_t2*)Args;Args+=sizeof(_t2);\
26 a3 = *(_t3*)Args;Args+=sizeof(_t3);\
27 a4 = *(_t4*)Args;Args+=sizeof(_t4);\
28 a5 = *(_t5*)Args;Args+=sizeof(_t5);\
29 LOG("SYSCALL5 '%s' %p %p %p %p %p %p", Fmt, (intptr_t)a0,(intptr_t)a1,(intptr_t)a2,(intptr_t)a3,(intptr_t)a4,(intptr_t)a5);\
32 #define SYSCALL5(_name, _fmtstr, _t0, _t1, _t2, _t3, _t4, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
33 _t0 a0;_t1 a1;_t2 a2;_t3 a3;_t4 a4;\
34 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
35 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
36 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
37 a2 = *(_t2*)Args;Args+=sizeof(_t2);\
38 a3 = *(_t3*)Args;Args+=sizeof(_t3);\
39 a4 = *(_t4*)Args;Args+=sizeof(_t4);\
40 LOG("SYSCALL5 '%s' %p %p %p %p %p", Fmt, (intptr_t)a0,(intptr_t)a1,(intptr_t)a2,(intptr_t)a3,(intptr_t)a4);\
43 #define SYSCALL4(_name, _fmtstr, _t0, _t1, _t2, _t3, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
44 _t0 a0;_t1 a1;_t2 a2;_t3 a3;\
45 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
46 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
47 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
48 a2 = *(_t2*)Args;Args+=sizeof(_t2);\
49 a3 = *(_t3*)Args;Args+=sizeof(_t3);\
50 LOG("SYSCALL4 '%s' %p %p %p %p", Fmt, (intptr_t)a0,(intptr_t)a1,(intptr_t)a2,(intptr_t)a3);\
54 #define SYSCALL3(_name, _fmtstr, _t0, _t1, _t2, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
55 _t0 a0;_t1 a1;_t2 a2;\
56 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
57 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
58 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
59 a2 = *(_t2*)Args;Args+=sizeof(_t2);\
60 LOG("SYSCALL3 '%s' %p %p %p", Fmt, (intptr_t)a0,(intptr_t)a1,(intptr_t)a2);\
64 #define SYSCALL2(_name, _fmtstr, _t0, _t1, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
66 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
67 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
68 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
69 LOG("SYSCALL2 '%s' %p %p", Fmt, (intptr_t)a0,(intptr_t)a1);\
73 #define SYSCALL1(_name, _fmtstr, _t0, _call) int _name(Uint*Errno,const char*Fmt, void*Args,int*Sizes){\
75 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
76 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
77 LOG("SYSCALL1 '%s' %p", Fmt,(intptr_t)a0);\
81 #define SYSCALL0(_name, _call) int _name(Uint*Errno,const char*Fmt, void*Args,int*Sizes){\
82 if(strcmp(Fmt,"")!=0)return 0;\
88 int Syscall_Null(Uint*Errno, const char *Format, void *Args, int *Sizes)
93 SYSCALL1(Syscall_Exit, "i", int,
98 SYSCALL2(Syscall_Open, "si", const char *, int,
99 return VFS_Open(a0, a1|VFS_OPENFLAG_USER);
101 SYSCALL1(Syscall_Close, "i", int,
105 SYSCALL3(Syscall_Read, "iid", int, int, void *,
106 if( Sizes[2] < a1 ) {
107 Log_Warning("Syscalls", "Read - %i < %i", Sizes[2], a1);
110 return VFS_Read(a0, a1, a2);
112 SYSCALL3(Syscall_Write, "iid", int, int, const void *,
115 return VFS_Write(a0, a1, a2);
117 SYSCALL3(Syscall_Seek, "iIi", int, int64_t, int,
118 return VFS_Seek(a0, a1, a2);
120 SYSCALL1(Syscall_Tell, "i", int,
123 SYSCALL3(Syscall_IOCtl, "iid", int, int, void *,
124 return VFS_IOCtl(a0, a1, a2);
126 SYSCALL3(Syscall_FInfo, "idi", int, void *, int,
127 if( Sizes[1] < sizeof(tFInfo)+a2*sizeof(tVFS_ACL)) {
128 LOG("offsetof(size) = %i", offsetof(tFInfo, size));
129 LOG("Bad size %i < %i", Sizes[1], sizeof(tFInfo)+a2*sizeof(tVFS_ACL));
133 return VFS_FInfo(a0, a1, a2);
135 SYSCALL2(Syscall_ReadDir, "id", int, char *,
138 return VFS_ReadDir(a0, a1);
140 SYSCALL6(Syscall_select, "iddddi", int, fd_set *, fd_set *, fd_set *, time_t *, unsigned int,
141 return VFS_Select(a0, a1, a2, a3, a4, a5, 0);
143 SYSCALL3(Syscall_OpenChild, "isi", int, const char *, int,
144 return VFS_OpenChild(a0, a1, a2|VFS_OPENFLAG_USER);
146 SYSCALL2(Syscall_GetACL, "id", int, void *,
147 if(Sizes[1] < sizeof(tVFS_ACL))
149 return VFS_GetACL(a0, (void*)a1);
151 SYSCALL4(Syscall_Mount, "ssss", const char *, const char *, const char *, const char *,
152 return VFS_Mount(a0, a1, a2, a3);
154 SYSCALL1(Syscall_Chdir, "s", const char *,
155 return VFS_ChDir(a0);
157 SYSCALL0(Syscall_Sleep,
161 SYSCALL2(Syscall_WaitTID, "id", int, int *,
162 if(Sizes[1] < sizeof(int))
164 return Threads_WaitTID(a0, a1);
166 SYSCALL1(Syscall_SetUID, "i", int,
167 if(Sizes[0] < sizeof(int)) {
168 *Errno = -EINVAL; // TODO: Better message
171 return Threads_SetUID(a0);
173 SYSCALL1(Syscall_SetGID, "i", int,
174 if(Sizes[0] < sizeof(int)) {
175 *Errno = -EINVAL; // TODO: Better message
178 return Threads_SetGID(a0);
181 SYSCALL0(Syscall_GetTID, return Threads_GetTID());
182 SYSCALL0(Syscall_GetPID, return Threads_GetPID());
183 SYSCALL0(Syscall_GetUID, return Threads_GetUID());
184 SYSCALL0(Syscall_GetGID, return Threads_GetGID());
186 SYSCALL1(Syscall_AN_Fork, "d", int *,
187 if(Sizes[0] < sizeof(int))
189 *a0 = Threads_Fork();
193 SYSCALL2(Syscall_SendMessage, "id", int, void *,
194 return Proc_SendMessage(a0, Sizes[1], a1);
197 SYSCALL2(Syscall_GetMessage, "dd", Uint *, void *,
198 if( Sizes[0] < sizeof(*a0) )
200 return Proc_GetMessage(a0, a1);
203 SYSCALL1(Syscall_WaitEvent, "i", int,
204 return Threads_WaitEvents(a0);
207 const tSyscallHandler caSyscalls[] = {
242 const int ciNumSyscalls = sizeof(caSyscalls)/sizeof(caSyscalls[0]);
244 * \brief Recieve a syscall structure from the server code
246 tRequestHeader *SyscallRecieve(tRequestHeader *Request, int *ReturnLength)
248 char formatString[Request->NParams+1];
249 char *inData = (char*)&Request->Params[Request->NParams];
253 int retValueCount = 1;
254 int retDataLen = sizeof(Uint64);
255 void *returnData[Request->NParams];
256 int argSizes[Request->NParams];
260 if( Request->CallID >= ciNumSyscalls ) {
261 Log_Notice("Syscalls", "Unknown syscall number %i", Request->CallID);
265 if( !caSyscalls[Request->CallID] ) {
266 Log_Notice("Syscalls", "Unimplemented syscall %i", Request->CallID);
270 // Get size of argument list
271 for( i = 0; i < Request->NParams; i ++ )
273 argSizes[i] = Request->Params[i].Length;
274 switch(Request->Params[i].Type)
277 formatString[i] = '-';
280 formatString[i] = 'i';
281 argListLen += sizeof(Uint32);
284 formatString[i] = 'I';
285 argListLen += sizeof(Uint64);
288 formatString[i] = 'd';
289 argListLen += sizeof(void*);
291 case ARG_TYPE_STRING:
292 formatString[i] = 's';
293 argListLen += sizeof(char*);
296 return NULL; // ERROR!
299 formatString[i] = '\0';
301 //LOG("Request %i(%s) '%s'", Request->CallID, casSYSCALL_NAMES[Request->CallID], formatString);
304 char argListData[argListLen];
306 // Build argument list
307 for( i = 0; i < Request->NParams; i ++ )
309 returnData[i] = NULL;
310 switch(Request->Params[i].Type)
315 //LOG("%i INT32: 0x%x", i, *(Uint32*)inData);
316 *(Uint32*)&argListData[argListLen] = *(Uint32*)inData;
317 argListLen += sizeof(Uint32);
318 inData += sizeof(Uint32);
321 //LOG("%i INT64: 0x%llx", i, *(Uint64*)inData);
322 *(Uint64*)&argListData[argListLen] = *(Uint64*)inData;
323 argListLen += sizeof(Uint64);
324 inData += sizeof(Uint64);
326 case ARG_TYPE_STRING:
327 //LOG("%i STR: '%s'", i, (char*)inData);
328 *(char**)&argListData[argListLen] = (char*)inData;
329 argListLen += sizeof(void*);
330 inData += Request->Params[i].Length;
333 // Data gets special handling, because only it can be returned to the user
334 // (ARG_TYPE_DATA is a pointer)
336 // Prepare the return values
337 if( Request->Params[i].Flags & ARG_FLAG_RETURN )
339 retDataLen += Request->Params[i].Length;
343 // Check for non-resident data
344 if( Request->Params[i].Flags & ARG_FLAG_ZEROED )
346 // Allocate and zero the buffer
347 returnData[i] = calloc(1, Request->Params[i].Length);
348 //LOG("%i ZDAT: %i %p", i,
349 // Request->Params[i].Length, returnData[i]);
350 *(void**)&argListData[argListLen] = returnData[i];
351 argListLen += sizeof(void*);
355 returnData[i] = (void*)inData;
356 //LOG("%i DATA: %i %p", i,
357 // Request->Params[i].Length, returnData[i]);
358 *(void**)&argListData[argListLen] = (void*)inData;
359 argListLen += sizeof(void*);
360 inData += Request->Params[i].Length;
366 retVal = caSyscalls[Request->CallID](&ret_errno, formatString, argListData, argSizes);
369 // Allocate the return
370 ret = malloc(sizeof(tRequestHeader) + retValueCount * sizeof(tRequestValue)
372 ret->ClientID = Request->ClientID;
373 ret->CallID = Request->CallID;
374 ret->NParams = retValueCount;
375 inData = (char*)&ret->Params[ ret->NParams ];
377 // Static Uint64 return value
378 ret->Params[0].Type = ARG_TYPE_INT64;
379 ret->Params[0].Flags = 0;
380 ret->Params[0].Length = sizeof(Uint64);
381 *(Uint64*)inData = retVal;
382 inData += sizeof(Uint64);
384 Log_Debug("Syscalls", "Return 0x%llx", retVal);
387 for( i = 0; i < Request->NParams; i ++ )
389 if( Request->Params[i].Type != ARG_TYPE_DATA ) continue;
390 if( !(Request->Params[i].Flags & ARG_FLAG_RETURN) ) continue;
392 ret->Params[retValueCount].Type = Request->Params[i].Type;
393 ret->Params[retValueCount].Flags = 0;
394 ret->Params[retValueCount].Length = Request->Params[i].Length;
396 LOG("Ret %i: Type %i, Len %i",
397 i, Request->Params[i].Type, Request->Params[i].Length);
399 memcpy(inData, returnData[i], Request->Params[i].Length);
400 inData += Request->Params[i].Length;
402 if( Request->Params[i].Flags & ARG_FLAG_ZEROED )
403 free( returnData[i] ); // Free temp buffer from above
407 *ReturnLength = sizeof(tRequestHeader)
408 + retValueCount * sizeof(tRequestValue)