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comparison VMS.c @ 77:fe5ec83f1baf

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separated hardware dependent code
author Merten Sach <msach@mailbox.tu-berlin.de>
date Wed, 22 Jun 2011 16:12:27 +0200
parents 9ddbb071142d
children 521c75d64cef
comparison
equal deleted inserted replaced
40:d7ea8d2cfe8f 41:ca7ff8cf081a
10 #include <malloc.h> 10 #include <malloc.h>
11 #include <inttypes.h> 11 #include <inttypes.h>
12 #include <sys/time.h> 12 #include <sys/time.h>
13 13
14 #include "VMS.h" 14 #include "VMS.h"
15 #include "SwitchAnimators.h" 15 #include "ProcrContext.h"
16 #include "Queue_impl/BlockingQueue.h" 16 #include "Queue_impl/BlockingQueue.h"
17 #include "Histogram/Histogram.h" 17 #include "Histogram/Histogram.h"
18 18
19 19
20 #define thdAttrs NULL 20 #define thdAttrs NULL
279 coreLoop_Seq( NULL ); 279 coreLoop_Seq( NULL );
280 flushRegisters(); 280 flushRegisters();
281 281
282 } 282 }
283 #endif 283 #endif
284
285 /*Create stack, then create __cdecl structure on it and put initialData and
286 * pointer to the new structure instance into the parameter positions on
287 * the stack
288 *Then put function pointer into nextInstrPt -- the stack is setup in std
289 * call structure, so jumping to function ptr is same as a GCC generated
290 * function call
291 *No need to save registers on old stack frame, because there's no old
292 * animator state to return to --
293 *
294 */
295 inline VirtProcr *
296 create_procr_helper( VirtProcr *newPr, VirtProcrFnPtr fnPtr,
297 void *initialData, void *stackLocs )
298 {
299 void *stackPtr;
300
301 newPr->startOfStack = stackLocs;
302 newPr->procrID = _VMSMasterEnv->numProcrsCreated++;
303 newPr->initialData = initialData;
304 newPr->requests = NULL;
305 newPr->schedSlot = NULL;
306
307 /*
308 * Hardware dependent part
309 */
310 //instead of calling the function directly, call a wrapper function to fetch
311 //arguments from stack
312 newPr->nextInstrPt = (VirtProcrFnPtr)&startVirtProcrFn;
313
314 //fnPtr takes two params -- void *initData & void *animProcr
315 //alloc stack locations, make stackPtr be the highest addr minus room
316 // for 2 params + return addr. Return addr (NULL) is in loc pointed to
317 // by stackPtr, initData at stackPtr + 8 bytes, animatingPr just above
318 stackPtr = ( (void *)stackLocs + VIRT_PROCR_STACK_SIZE - 4*sizeof(void*));
319
320 //setup __cdecl on stack -- coreloop will switch to stackPtr before jmp
321 *((VirtProcr**)stackPtr + 2 ) = newPr; //rightmost param
322 *((void**)stackPtr + 1 ) = initialData; //next param to left
323 *((void**)stackPtr) = (void*)fnPtr;
324
325 /*
326 * end of Hardware dependent part
327 */
328
329 newPr->stackPtr = stackPtr; //core loop will switch to this, then
330 newPr->framePtr = stackPtr; //suspend loop will save new stack & frame ptr
331
332 //============================= MEASUREMENT STUFF ========================
333 #ifdef STATS__TURN_ON_PROBES
334 struct timeval timeStamp;
335 gettimeofday( &(timeStamp), NULL);
336 newPr->createPtInSecs = timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0) -
337 _VMSMasterEnv->createPtInSecs;
338 #endif
339 //========================================================================
340
341 return newPr;
342 }
343 284
344 inline VirtProcr * 285 inline VirtProcr *
345 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData ) 286 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
346 { VirtProcr *newPr; 287 { VirtProcr *newPr;
347 void *stackLocs; 288 void *stackLocs;