3 * - Acess kernel emulation on another OS using SDL and UDP
12 # define DONT_INCLUDE_SYSCALL_NAMES
14 #include "../syscalls.h"
17 extern int Threads_Fork(void); // AcessNative only function
18 extern int Threads_Spawn(int nFD, int FDs[], const void *info);
21 typedef int (*tSyscallHandler)(Uint *Errno, const char *Format, void *Args, int *Sizes);
24 #define SYSCALL6(_name, _fmtstr, _t0, _t1, _t2, _t3, _t4, _t5, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
25 _t0 a0;_t1 a1;_t2 a2;_t3 a3;_t4 a4;_t5 a5;\
26 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
27 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
28 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
29 a2 = *(_t2*)Args;Args+=sizeof(_t2);\
30 a3 = *(_t3*)Args;Args+=sizeof(_t3);\
31 a4 = *(_t4*)Args;Args+=sizeof(_t4);\
32 a5 = *(_t5*)Args;Args+=sizeof(_t5);\
33 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);\
36 #define SYSCALL5(_name, _fmtstr, _t0, _t1, _t2, _t3, _t4, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
37 _t0 a0;_t1 a1;_t2 a2;_t3 a3;_t4 a4;\
38 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
39 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
40 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
41 a2 = *(_t2*)Args;Args+=sizeof(_t2);\
42 a3 = *(_t3*)Args;Args+=sizeof(_t3);\
43 a4 = *(_t4*)Args;Args+=sizeof(_t4);\
44 LOG("SYSCALL5 '%s' %p %p %p %p %p", Fmt, (intptr_t)a0,(intptr_t)a1,(intptr_t)a2,(intptr_t)a3,(intptr_t)a4);\
47 #define SYSCALL4(_name, _fmtstr, _t0, _t1, _t2, _t3, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
48 _t0 a0;_t1 a1;_t2 a2;_t3 a3;\
49 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
50 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
51 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
52 a2 = *(_t2*)Args;Args+=sizeof(_t2);\
53 a3 = *(_t3*)Args;Args+=sizeof(_t3);\
54 LOG("SYSCALL4 '%s' %p %p %p %p", Fmt, (intptr_t)a0,(intptr_t)a1,(intptr_t)a2,(intptr_t)a3);\
58 #define SYSCALL3(_name, _fmtstr, _t0, _t1, _t2, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
59 _t0 a0;_t1 a1;_t2 a2;\
60 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
61 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
62 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
63 a2 = *(_t2*)Args;Args+=sizeof(_t2);\
64 LOG("SYSCALL3 '%s' %p %p %p", Fmt, (intptr_t)a0,(intptr_t)a1,(intptr_t)a2);\
68 #define SYSCALL2(_name, _fmtstr, _t0, _t1, _call) int _name(Uint*Errno,const char*Fmt,void*Args,int*Sizes){\
70 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
71 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
72 a1 = *(_t1*)Args;Args+=sizeof(_t1);\
73 LOG("SYSCALL2 '%s' %p %p", Fmt, (intptr_t)a0,(intptr_t)a1);\
77 #define SYSCALL1(_name, _fmtstr, _t0, _call) int _name(Uint*Errno,const char*Fmt, void*Args,int*Sizes){\
79 if(strcmp(Fmt,_fmtstr)!=0)return 0;\
80 a0 = *(_t0*)Args;Args+=sizeof(_t0);\
81 LOG("SYSCALL1 '%s' %p", Fmt,(intptr_t)a0);\
85 #define SYSCALL0(_name, _call) int _name(Uint*Errno,const char*Fmt, void*Args,int*Sizes){\
86 if(strcmp(Fmt,"")!=0)return 0;\
92 int Syscall_Null(Uint*Errno, const char *Format, void *Args, int *Sizes)
97 SYSCALL1(Syscall_Exit, "i", int,
102 SYSCALL2(Syscall_Open, "si", const char *, int,
103 return VFS_Open(a0, a1|VFS_OPENFLAG_USER);
105 SYSCALL1(Syscall_Close, "i", int,
109 SYSCALL3(Syscall_Read, "iid", int, int, void *,
110 if( Sizes[2] < a1 ) {
111 Log_Warning("Syscalls", "Read - %i < %i", Sizes[2], a1);
114 return VFS_Read(a0, a1, a2);
116 SYSCALL3(Syscall_Write, "iid", int, int, const void *,
119 return VFS_Write(a0, a1, a2);
121 SYSCALL3(Syscall_Seek, "iIi", int, int64_t, int,
122 return VFS_Seek(a0, a1, a2);
124 SYSCALL1(Syscall_Tell, "i", int,
127 SYSCALL3(Syscall_IOCtl, "iid", int, int, void *,
128 return VFS_IOCtl(a0, a1, a2);
130 SYSCALL3(Syscall_FInfo, "idi", int, void *, int,
131 if( Sizes[1] < sizeof(tFInfo)+a2*sizeof(tVFS_ACL)) {
132 LOG("offsetof(size) = %i", offsetof(tFInfo, size));
133 LOG("Bad size %i < %i", Sizes[1], sizeof(tFInfo)+a2*sizeof(tVFS_ACL));
137 return VFS_FInfo(a0, a1, a2);
139 SYSCALL2(Syscall_ReadDir, "id", int, char *,
142 return VFS_ReadDir(a0, a1);
144 SYSCALL6(Syscall_select, "iddddi", int, fd_set *, fd_set *, fd_set *, tTime *, unsigned int,
145 return VFS_Select(a0, a1, a2, a3, a4, a5, 0);
147 SYSCALL3(Syscall_OpenChild, "isi", int, const char *, int,
148 return VFS_OpenChild(a0, a1, a2|VFS_OPENFLAG_USER);
150 SYSCALL2(Syscall_GetACL, "id", int, void *,
151 if(Sizes[1] < sizeof(tVFS_ACL))
153 return VFS_GetACL(a0, (void*)a1);
155 SYSCALL4(Syscall_Mount, "ssss", const char *, const char *, const char *, const char *,
156 return VFS_Mount(a0, a1, a2, a3);
158 SYSCALL1(Syscall_Chdir, "s", const char *,
159 return VFS_ChDir(a0);
161 SYSCALL0(Syscall_Sleep,
165 SYSCALL2(Syscall_WaitTID, "id", int, int *,
166 if(Sizes[1] < sizeof(int))
168 return Threads_WaitTID(a0, a1);
170 SYSCALL1(Syscall_SetUID, "i", int,
171 if(Sizes[0] < sizeof(int)) {
172 *Errno = -EINVAL; // TODO: Better message
175 return Threads_SetUID(a0);
177 SYSCALL1(Syscall_SetGID, "i", int,
178 if(Sizes[0] < sizeof(int)) {
179 *Errno = -EINVAL; // TODO: Better message
182 return Threads_SetGID(a0);
185 SYSCALL0(Syscall_GetTID, return Threads_GetTID());
186 SYSCALL0(Syscall_GetPID, return Threads_GetPID());
187 SYSCALL0(Syscall_GetUID, return Threads_GetUID());
188 SYSCALL0(Syscall_GetGID, return Threads_GetGID());
190 SYSCALL1(Syscall_AN_Fork, "d", int *,
191 if(Sizes[0] < sizeof(int))
193 *a0 = Threads_Fork();
197 SYSCALL3(Syscall_AN_Spawn, "ddd", int *, int *, void *,
198 if(Sizes[0] < sizeof(int))
200 *a0 = Threads_Spawn(Sizes[1] / sizeof(int), a1, a2);
204 SYSCALL2(Syscall_SendMessage, "id", int, void *,
205 return Proc_SendMessage(a0, Sizes[1], a1);
208 SYSCALL2(Syscall_GetMessage, "dd", uint32_t *, void *,
209 if( a0 && Sizes[0] < sizeof(*a0) ) {
210 Log_Notice("Syscalls", "Syscall_GetMessage - Arg 1 Undersize (%i < %i)",
211 Sizes[0], sizeof(*a0));
217 rv = Proc_GetMessage(&tmp, Sizes[1], a1);
221 rv = Proc_GetMessage(NULL, Sizes[1], a1);
225 SYSCALL1(Syscall_WaitEvent, "i", int,
226 return Threads_WaitEvents(a0);
229 const tSyscallHandler caSyscalls[] = {
265 const int ciNumSyscalls = sizeof(caSyscalls)/sizeof(caSyscalls[0]);
267 * \brief Recieve a syscall structure from the server code
269 tRequestHeader *SyscallRecieve(tRequestHeader *Request, int *ReturnLength)
271 char formatString[Request->NParams+1];
272 char *inData = (char*)&Request->Params[Request->NParams];
276 int retValueCount = 1;
277 int retDataLen = sizeof(Uint64);
278 void *returnData[Request->NParams];
279 int argSizes[Request->NParams];
283 if( Request->CallID >= ciNumSyscalls ) {
284 Log_Notice("Syscalls", "Unknown syscall number %i", Request->CallID);
288 if( !caSyscalls[Request->CallID] ) {
289 Log_Notice("Syscalls", "Unimplemented syscall %i", Request->CallID);
293 // Get size of argument list
294 for( i = 0; i < Request->NParams; i ++ )
296 argSizes[i] = Request->Params[i].Length;
297 switch(Request->Params[i].Type)
300 formatString[i] = '-';
303 formatString[i] = 'i';
304 argListLen += sizeof(Uint32);
307 formatString[i] = 'I';
308 argListLen += sizeof(Uint64);
311 formatString[i] = 'd';
312 argListLen += sizeof(void*);
314 case ARG_TYPE_STRING:
315 formatString[i] = 's';
316 argListLen += sizeof(char*);
319 return NULL; // ERROR!
322 formatString[i] = '\0';
324 LOG("Request %i(%s) '%s'", Request->CallID, casSYSCALL_NAMES[Request->CallID], formatString);
327 char argListData[argListLen];
329 // Build argument list
330 for( i = 0; i < Request->NParams; i ++ )
332 returnData[i] = NULL;
333 switch(Request->Params[i].Type)
338 //LOG("%i INT32: 0x%x", i, *(Uint32*)inData);
339 *(Uint32*)&argListData[argListLen] = *(Uint32*)inData;
340 argListLen += sizeof(Uint32);
341 inData += sizeof(Uint32);
344 //LOG("%i INT64: 0x%llx", i, *(Uint64*)inData);
345 *(Uint64*)&argListData[argListLen] = *(Uint64*)inData;
346 argListLen += sizeof(Uint64);
347 inData += sizeof(Uint64);
349 case ARG_TYPE_STRING:
350 //LOG("%i STR: '%s'", i, (char*)inData);
351 *(char**)&argListData[argListLen] = (char*)inData;
352 argListLen += sizeof(void*);
353 inData += Request->Params[i].Length;
356 // Data gets special handling, because only it can be returned to the user
357 // (ARG_TYPE_DATA is a pointer)
359 // Prepare the return values
360 if( Request->Params[i].Flags & ARG_FLAG_RETURN )
362 retDataLen += Request->Params[i].Length;
366 // Check for non-resident data
367 if( Request->Params[i].Length == 0 )
369 returnData[i] = NULL;
370 *(void**)&argListData[argListLen] = NULL;
371 argListLen += sizeof(void*);
373 else if( Request->Params[i].Flags & ARG_FLAG_ZEROED )
375 // Allocate and zero the buffer
376 returnData[i] = calloc(1, Request->Params[i].Length);
377 //LOG("%i ZDAT: %i %p", i,
378 // Request->Params[i].Length, returnData[i]);
379 *(void**)&argListData[argListLen] = returnData[i];
380 argListLen += sizeof(void*);
384 returnData[i] = (void*)inData;
385 //LOG("%i DATA: %i %p", i,
386 // Request->Params[i].Length, returnData[i]);
387 *(void**)&argListData[argListLen] = (void*)inData;
388 argListLen += sizeof(void*);
389 inData += Request->Params[i].Length;
395 retVal = caSyscalls[Request->CallID](&ret_errno, formatString, argListData, argSizes);
398 // Allocate the return
399 size_t msglen = sizeof(tRequestHeader) + retValueCount * sizeof(tRequestValue) + retDataLen;
400 ret = malloc(msglen);
401 ret->ClientID = Request->ClientID;
402 ret->CallID = Request->CallID;
403 ret->NParams = retValueCount;
404 ret->MessageLength = msglen;
405 inData = (char*)&ret->Params[ ret->NParams ];
407 // Static Uint64 return value
408 ret->Params[0].Type = ARG_TYPE_INT64;
409 ret->Params[0].Flags = 0;
410 ret->Params[0].Length = sizeof(Uint64);
411 *(Uint64*)inData = retVal;
412 inData += sizeof(Uint64);
414 //Log_Debug("Syscalls", "Return 0x%llx", retVal);
417 for( i = 0; i < Request->NParams; i ++ )
419 if( Request->Params[i].Type != ARG_TYPE_DATA ) continue;
420 if( !(Request->Params[i].Flags & ARG_FLAG_RETURN) ) continue;
422 ret->Params[retValueCount].Type = Request->Params[i].Type;
423 ret->Params[retValueCount].Flags = 0;
424 ret->Params[retValueCount].Length = Request->Params[i].Length;
426 LOG("Ret %i: Type %i, Len %i",
427 i, Request->Params[i].Type, Request->Params[i].Length);
429 memcpy(inData, returnData[i], Request->Params[i].Length);
430 inData += Request->Params[i].Length;
432 if( Request->Params[i].Flags & ARG_FLAG_ZEROED )
433 free( returnData[i] ); // Free temp buffer from above
437 *ReturnLength = sizeof(tRequestHeader)
438 + retValueCount * sizeof(tRequestValue)