|
1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of the License "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // e32\memmodel\epoc\moving\mcodeseg.cpp |
|
15 // |
|
16 // |
|
17 |
|
18 #include "memmodel.h" |
|
19 #include "cache_maintenance.h" |
|
20 #include <demand_paging.h> |
|
21 |
|
22 _LIT(KLitUserCode,"USER$CODE"); |
|
23 _LIT(KLitKernCode,"KERN$CODE"); |
|
24 |
|
25 TInt MM::CreateCodeChunk(TBool aKernel) |
|
26 { |
|
27 __KTRACE_OPT(KDLL,Kern::Printf("MM::CreateCodeChunk %d",aKernel)); |
|
28 Mmu& m = Mmu::Get(); |
|
29 SChunkCreateInfo c; |
|
30 c.iGlobal = ETrue; |
|
31 c.iAtt = TChunkCreate::EDisconnected; |
|
32 c.iForceFixed = EFalse; |
|
33 c.iOperations = 0; |
|
34 c.iPreallocated = 0; |
|
35 c.iOwner = NULL; |
|
36 |
|
37 if (aKernel) |
|
38 { |
|
39 c.iRunAddress = m.iKernelCodeBase; |
|
40 c.iType = EKernelCode; |
|
41 c.iMaxSize = m.iMaxKernelCodeSize; |
|
42 c.iName.Set(KLitKernCode); |
|
43 } |
|
44 else |
|
45 { |
|
46 c.iRunAddress = m.iUserCodeBase; |
|
47 c.iType = EDll; |
|
48 c.iMaxSize = m.iMaxUserCodeSize; |
|
49 c.iName.Set(KLitUserCode); |
|
50 } |
|
51 |
|
52 TLinAddr runAddr; |
|
53 DMemModelChunk* pC = NULL; |
|
54 TInt r=K::TheKernelProcess->NewChunk((DChunk*&)pC, c, runAddr); |
|
55 if (r==KErrNone) |
|
56 { |
|
57 pC->SetFixedAddress(c.iRunAddress, 0); |
|
58 if (aKernel) |
|
59 MM::KernelCodeChunk = pC; |
|
60 else |
|
61 MM::UserCodeChunk = pC; |
|
62 } |
|
63 return r; |
|
64 } |
|
65 |
|
66 DCodeSeg* M::NewCodeSeg(TCodeSegCreateInfo&) |
|
67 // |
|
68 // Create a new instance of this class. |
|
69 // |
|
70 { |
|
71 |
|
72 __KTRACE_OPT(KDLL,Kern::Printf("M::NewCodeSeg")); |
|
73 return new DMemModelCodeSeg; |
|
74 } |
|
75 |
|
76 |
|
77 DEpocCodeSegMemory* DEpocCodeSegMemory::New(DEpocCodeSeg* aCodeSeg) |
|
78 { |
|
79 return new DMemModelCodeSegMemory(aCodeSeg); |
|
80 } |
|
81 |
|
82 |
|
83 DMemModelCodeSegMemory::DMemModelCodeSegMemory(DEpocCodeSeg* aCodeSeg) |
|
84 : DMmuCodeSegMemory(aCodeSeg) |
|
85 { |
|
86 } |
|
87 |
|
88 |
|
89 TInt DMemModelCodeSegMemory::Create(TCodeSegCreateInfo& aInfo) |
|
90 { |
|
91 TInt r = DMmuCodeSegMemory::Create(aInfo); |
|
92 if(r!=KErrNone) |
|
93 return r; |
|
94 |
|
95 Mmu& m=Mmu::Get(); |
|
96 |
|
97 TInt codeSize = iPageCount<<m.iPageShift; |
|
98 TInt dataSize = iDataPageCount<<m.iPageShift; |
|
99 TInt totalSize = codeSize+dataSize; |
|
100 |
|
101 DCodeSeg::Wait(); |
|
102 |
|
103 DChunk::TCommitType commitType = iIsDemandPaged ? DChunk::ECommitVirtual : DChunk::ECommitDiscontiguous; |
|
104 r=MM::UserCodeChunk->FindFree(totalSize, 0, 0); |
|
105 if (r<0) |
|
106 { |
|
107 r = KErrNoMemory; |
|
108 goto exit; |
|
109 } |
|
110 iCodeAllocBase = r; |
|
111 r = KErrNone; |
|
112 |
|
113 r=MM::UserCodeChunk->Commit(iCodeAllocBase, codeSize, commitType); |
|
114 if (r<0) |
|
115 { |
|
116 r = KErrNoMemory; |
|
117 goto exit; |
|
118 } |
|
119 |
|
120 iRamInfo.iCodeRunAddr = ((TLinAddr)MM::UserCodeChunk->Base())+iCodeAllocBase; |
|
121 iRamInfo.iCodeLoadAddr = iRamInfo.iCodeRunAddr; |
|
122 |
|
123 if (iRamInfo.iDataSize) |
|
124 { |
|
125 if(iDataPageCount) |
|
126 iRamInfo.iDataLoadAddr = iRamInfo.iCodeLoadAddr+codeSize; |
|
127 else |
|
128 iRamInfo.iDataLoadAddr = iRamInfo.iCodeLoadAddr+iRamInfo.iCodeSize; |
|
129 } |
|
130 |
|
131 if (!iIsDemandPaged) |
|
132 { |
|
133 TInt loadedSize = iRamInfo.iCodeSize+iRamInfo.iDataSize; |
|
134 memset((TAny*)(iRamInfo.iCodeLoadAddr+loadedSize), 0x03, totalSize-loadedSize); |
|
135 } |
|
136 else |
|
137 { |
|
138 if(dataSize) |
|
139 { |
|
140 r=MM::UserCodeChunk->Commit(iCodeAllocBase+codeSize, dataSize, DChunk::ECommitDiscontiguous); |
|
141 if (r<0) |
|
142 goto exit; |
|
143 memset((TAny*)(iRamInfo.iCodeLoadAddr+codeSize+iRamInfo.iDataSize), 0x03, dataSize-iRamInfo.iDataSize); |
|
144 } |
|
145 } |
|
146 |
|
147 exit: |
|
148 DCodeSeg::Signal(); |
|
149 return r; |
|
150 } |
|
151 |
|
152 |
|
153 TInt DMemModelCodeSegMemory::Loaded(TCodeSegCreateInfo& aInfo) |
|
154 { |
|
155 TInt r = DMmuCodeSegMemory::Loaded(aInfo); |
|
156 if(r!=KErrNone) |
|
157 return r; |
|
158 |
|
159 Mmu& m=Mmu::Get(); |
|
160 TInt pageShift = m.iPageShift; |
|
161 |
|
162 if(iIsDemandPaged) |
|
163 { |
|
164 // apply code fixups to pages which have already been loaded... |
|
165 TLinAddr loadAddr = iRamInfo.iCodeLoadAddr; |
|
166 TLinAddr loadAddrEnd = loadAddr+iRamInfo.iCodeSize; |
|
167 TLinAddr runAddr = iRamInfo.iCodeLoadAddr; |
|
168 TInt pageSize = 1<<pageShift; |
|
169 for(; loadAddr<loadAddrEnd; loadAddr+=pageSize,runAddr+=pageSize) |
|
170 { |
|
171 if(m.LinearToPhysical(loadAddr)!=KPhysAddrInvalid) |
|
172 { |
|
173 r = ApplyCodeFixupsOnLoad((TUint32*)loadAddr,runAddr); |
|
174 if(r!=KErrNone) |
|
175 return r; |
|
176 } |
|
177 } |
|
178 } |
|
179 CacheMaintenance::CodeChanged(iRamInfo.iCodeLoadAddr, iRamInfo.iCodeSize); |
|
180 |
|
181 // discard any temporary pages used to store loaded data section... |
|
182 if(iDataPageCount) |
|
183 { |
|
184 TInt codeSize = iPageCount<<pageShift; |
|
185 MM::UserCodeChunk->Decommit(iCodeAllocBase+codeSize, iDataPageCount<<pageShift); |
|
186 iDataPageCount = 0; |
|
187 //Reduce the size of the DCodeSeg now the data section has been moved |
|
188 iCodeSeg->iSize = codeSize; |
|
189 } |
|
190 |
|
191 return KErrNone; |
|
192 } |
|
193 |
|
194 |
|
195 void DMemModelCodeSegMemory::Destroy() |
|
196 { |
|
197 if(iCodeAllocBase!=KMinTInt && iDataPageCount) |
|
198 { |
|
199 Mmu& m=Mmu::Get(); |
|
200 TInt dataSize = iDataPageCount<<m.iPageShift; |
|
201 TInt codeSize = iPageCount<<m.iPageShift; |
|
202 if(dataSize) |
|
203 MM::UserCodeChunk->Decommit(iCodeAllocBase+codeSize, dataSize); |
|
204 } |
|
205 } |
|
206 |
|
207 |
|
208 DMemModelCodeSegMemory::~DMemModelCodeSegMemory() |
|
209 { |
|
210 if(iCodeAllocBase!=KMinTInt) |
|
211 { |
|
212 Mmu& m=Mmu::Get(); |
|
213 TInt codeSize = iPageCount<<m.iPageShift; |
|
214 DMemModelChunk::TDecommitType decommitType = iIsDemandPaged ? DChunk::EDecommitVirtual : DChunk::EDecommitNormal; |
|
215 MM::UserCodeChunk->Decommit(iCodeAllocBase, codeSize, decommitType); |
|
216 } |
|
217 } |
|
218 |
|
219 |
|
220 DMemModelCodeSeg::DMemModelCodeSeg() |
|
221 // |
|
222 // Constructor |
|
223 // |
|
224 : iCodeAllocBase(KMinTInt), |
|
225 iDataAllocBase(KMinTInt) |
|
226 { |
|
227 } |
|
228 |
|
229 DMemModelCodeSeg::~DMemModelCodeSeg() |
|
230 // |
|
231 // Destructor |
|
232 // |
|
233 { |
|
234 __KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSeg::Destruct %C", this)); |
|
235 Mmu& m=Mmu::Get(); |
|
236 if (!iXIP && iMemory) |
|
237 { |
|
238 SRamCodeInfo& ri=RamInfo(); |
|
239 DCodeSeg::Wait(); |
|
240 if (iCodeAllocBase!=KMinTInt) |
|
241 { |
|
242 TBool kernel=( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttKernel ); |
|
243 if (kernel) |
|
244 MM::KernelCodeChunk->Decommit(iCodeAllocBase, iSize); |
|
245 } |
|
246 Memory()->Destroy(); |
|
247 TInt data_alloc=(ri.iDataSize+ri.iBssSize+m.iPageMask)>>m.iPageShift; |
|
248 if (iDataAllocBase>=0) |
|
249 { |
|
250 MM::DllDataAllocator->Free(iDataAllocBase, data_alloc); |
|
251 } |
|
252 else if (iDataAllocBase==-1) |
|
253 { |
|
254 DMemModelProcess* p=(DMemModelProcess*)iAttachProcess; |
|
255 if (p->iExitType==EExitPending) |
|
256 { |
|
257 DMemModelChunk& c=*p->iDllDataChunk; |
|
258 TInt offset=ri.iDataRunAddr-TLinAddr(c.Base()); |
|
259 c.Decommit(offset, data_alloc<<m.iPageShift); |
|
260 if (c.iSize==0) |
|
261 p->FreeDllDataChunk(); |
|
262 } |
|
263 } |
|
264 DCodeSeg::Signal(); |
|
265 } |
|
266 Kern::Free(iKernelData); |
|
267 DEpocCodeSeg::Destruct(); |
|
268 } |
|
269 |
|
270 |
|
271 TInt DMemModelCodeSeg::DoCreateRam(TCodeSegCreateInfo& aInfo, DProcess* aProcess) |
|
272 { |
|
273 __KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSeg::DoCreateRam %C proc %O", this, aProcess)); |
|
274 TBool kernel=( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttKernel ); |
|
275 DMemModelProcess* p=(DMemModelProcess*)aProcess; |
|
276 Mmu& m=Mmu::Get(); |
|
277 SRamCodeInfo& ri=RamInfo(); |
|
278 iSize = Mmu::RoundToPageSize(ri.iCodeSize+ri.iDataSize); |
|
279 if (iSize==0) |
|
280 return KErrCorrupt; |
|
281 TInt total_data_size=ri.iDataSize+ri.iBssSize; |
|
282 TInt r=KErrNone; |
|
283 if (kernel) |
|
284 { |
|
285 r=MM::KernelCodeChunk->Allocate(iSize, 0, 0); |
|
286 if (r<0) |
|
287 return r; |
|
288 iCodeAllocBase=r; |
|
289 ri.iCodeRunAddr=(TUint32)MM::KernelCodeChunk->Base(); |
|
290 ri.iCodeRunAddr+=r; |
|
291 ri.iCodeLoadAddr=ri.iCodeRunAddr; |
|
292 if (ri.iDataSize) |
|
293 ri.iDataLoadAddr=ri.iCodeLoadAddr+ri.iCodeSize; |
|
294 if (total_data_size) |
|
295 { |
|
296 iKernelData=Kern::Alloc(total_data_size); |
|
297 if (!iKernelData) |
|
298 return KErrNoMemory; |
|
299 ri.iDataRunAddr=(TLinAddr)iKernelData; |
|
300 } |
|
301 return KErrNone; |
|
302 } |
|
303 |
|
304 r = Memory()->Create(aInfo); |
|
305 if(r!=KErrNone) |
|
306 return r; |
|
307 |
|
308 r=KErrNone; |
|
309 if (total_data_size && p && p->iAttributes&DMemModelProcess::EFixedAddress) |
|
310 { |
|
311 SetAttachProcess(p); |
|
312 } |
|
313 if (total_data_size && !IsExe()) |
|
314 { |
|
315 TInt data_alloc_size=Mmu::RoundToPageSize(total_data_size); |
|
316 TInt data_alloc=data_alloc_size>>m.iPageShift; |
|
317 DCodeSeg::Wait(); |
|
318 if (p) |
|
319 { |
|
320 if (p->iExitType!=EExitPending) |
|
321 return KErrDied; |
|
322 } |
|
323 if (iAttachProcess) |
|
324 { |
|
325 r=KErrNone; |
|
326 if (!p->iDllDataChunk) |
|
327 r=p->CreateDllDataChunk(); |
|
328 if (r==KErrNone) |
|
329 { |
|
330 DMemModelChunk& c=*p->iDllDataChunk; |
|
331 r=c.Allocate(data_alloc_size, 0, 0); |
|
332 if (r>=0) |
|
333 { |
|
334 ri.iDataRunAddr=TLinAddr(c.Base())+r; |
|
335 iDataAllocBase=-1; |
|
336 r=KErrNone; |
|
337 } |
|
338 else |
|
339 { |
|
340 if (c.iSize==0) |
|
341 p->FreeDllDataChunk(); |
|
342 r=KErrNoMemory; |
|
343 } |
|
344 } |
|
345 } |
|
346 else |
|
347 { |
|
348 r=MM::DllDataAllocator->AllocConsecutive(data_alloc, ETrue); |
|
349 if (r>=0) |
|
350 MM::DllDataAllocator->Alloc(r, data_alloc); |
|
351 if (r>=0) |
|
352 { |
|
353 iDataAllocBase=r; |
|
354 ri.iDataRunAddr=m.iDataSectionEnd-((r+data_alloc)<<m.iPageShift); |
|
355 r=KErrNone; |
|
356 } |
|
357 else |
|
358 r=KErrNoMemory; |
|
359 } |
|
360 DCodeSeg::Signal(); |
|
361 } |
|
362 if(r!=KErrNone) |
|
363 return r; |
|
364 |
|
365 return r; |
|
366 } |
|
367 |
|
368 |
|
369 TInt DMemModelCodeSeg::DoCreateXIP(DProcess* aProcess) |
|
370 { |
|
371 __KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSeg::DoCreateXIP %C proc %O", this, aProcess)); |
|
372 DMemModelProcess* p=(DMemModelProcess*)aProcess; |
|
373 TInt r=KErrNone; |
|
374 TBool kernel=( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttKernel ); |
|
375 const TRomImageHeader& rih=RomInfo(); |
|
376 TBool fixed=p && (p->iAttributes&DMemModelProcess::EFixedAddress); |
|
377 if (!kernel && fixed) |
|
378 { |
|
379 // XIP images with static data loaded into fixed processes are specific to a single process |
|
380 if (rih.iFlags&KRomImageFlagDataPresent) |
|
381 { |
|
382 if (rih.iTotalDataSize) |
|
383 { |
|
384 TLinAddr process_data_base=p->iDataBssRunAddress; |
|
385 TUint32 process_data_maxsize=p->iDataBssStackChunk->iMaxSize; |
|
386 if (rih.iDataBssLinearBase<process_data_base || |
|
387 (rih.iDataBssLinearBase+rih.iTotalDataSize)>(process_data_base+process_data_maxsize)) |
|
388 return KErrNotSupported; |
|
389 } |
|
390 SetAttachProcess(p); |
|
391 iDataAllocBase=-1; |
|
392 } |
|
393 } |
|
394 return r; |
|
395 } |
|
396 |
|
397 |
|
398 TInt DMemModelCodeSeg::Loaded(TCodeSegCreateInfo& aInfo) |
|
399 { |
|
400 if (!iXIP) |
|
401 { |
|
402 TBool kernel=( (iAttr&(ECodeSegAttKernel|ECodeSegAttGlobal)) == ECodeSegAttKernel ); |
|
403 if(kernel) |
|
404 { |
|
405 // Clean DCache for specified area, Invalidate ICache/BTB for specified area |
|
406 SRamCodeInfo& ri=RamInfo(); |
|
407 CacheMaintenance::CodeChanged(ri.iCodeRunAddr, ri.iCodeSize); |
|
408 } |
|
409 else |
|
410 { |
|
411 TInt r = Memory()->Loaded(aInfo); |
|
412 if(r!=KErrNone) |
|
413 return r; |
|
414 } |
|
415 } |
|
416 return DEpocCodeSeg::Loaded(aInfo); |
|
417 } |
|
418 |
|
419 |
|
420 void DMemModelCodeSeg::ReadExportDir(TUint32* aDest) |
|
421 { |
|
422 __KTRACE_OPT(KDLL,Kern::Printf("DMemModelCodeSeg::ReadExportDir %08x",aDest)); |
|
423 if (!iXIP) |
|
424 { |
|
425 SRamCodeInfo& ri=RamInfo(); |
|
426 TInt size=(ri.iExportDirCount+1)*sizeof(TLinAddr); |
|
427 kumemput32(aDest, (const TUint32*)(ri.iExportDir-sizeof(TUint32)), size); |
|
428 } |
|
429 } |
|
430 |
|
431 TBool DMemModelCodeSeg::OpenCheck(DProcess* aProcess) |
|
432 { |
|
433 return FindCheck(aProcess); |
|
434 } |
|
435 |
|
436 TBool DMemModelCodeSeg::FindCheck(DProcess* aProcess) |
|
437 { |
|
438 __KTRACE_OPT(KDLL,Kern::Printf("CSEG:%08x Compat? proc=%O",this,aProcess)); |
|
439 if (!aProcess) |
|
440 return !iAttachProcess; // can't reuse same code segment for a new instance of the process |
|
441 DMemModelProcess& p=*(DMemModelProcess*)aProcess; |
|
442 DCodeSeg* pPSeg=p.CodeSeg(); |
|
443 if (iAttachProcess && iAttachProcess!=aProcess) |
|
444 return EFalse; |
|
445 if (iExeCodeSeg && iExeCodeSeg!=pPSeg) |
|
446 return EFalse; |
|
447 if (!iAttachProcess && (iMark & EMarkDataPresent)) |
|
448 { |
|
449 // code seg used for moving processes, data present |
|
450 if (p.iAttributes & DMemModelProcess::EFixedAddress) |
|
451 return EFalse; |
|
452 } |
|
453 return ETrue; |
|
454 } |