| 1 | // Licensed to the .NET Foundation under one or more agreements. |
| 2 | // The .NET Foundation licenses this file to you under the MIT license. |
| 3 | // See the LICENSE file in the project root for more information. |
| 4 | |
| 5 | |
| 6 | // |
| 7 | |
| 8 | #include "common.h" |
| 9 | #include "peimagelayout.h" |
| 10 | #include "peimagelayout.inl" |
| 11 | |
| 12 | #ifndef DACCESS_COMPILE |
| 13 | PEImageLayout* PEImageLayout::CreateFlat(const void *flat, COUNT_T size,PEImage* pOwner) |
| 14 | { |
| 15 | STANDARD_VM_CONTRACT; |
| 16 | return new RawImageLayout(flat,size,pOwner); |
| 17 | } |
| 18 | |
| 19 | |
| 20 | PEImageLayout* PEImageLayout::CreateFromHMODULE(HMODULE hModule,PEImage* pOwner, BOOL bTakeOwnership) |
| 21 | { |
| 22 | CONTRACTL |
| 23 | { |
| 24 | THROWS; |
| 25 | GC_TRIGGERS; |
| 26 | MODE_ANY; |
| 27 | } |
| 28 | CONTRACTL_END; |
| 29 | return new RawImageLayout(hModule,pOwner,bTakeOwnership,TRUE); |
| 30 | } |
| 31 | |
| 32 | PEImageLayout* PEImageLayout::LoadFromFlat(PEImageLayout* pflatimage) |
| 33 | { |
| 34 | STANDARD_VM_CONTRACT; |
| 35 | return new ConvertedImageLayout(pflatimage); |
| 36 | } |
| 37 | |
| 38 | PEImageLayout* PEImageLayout::Load(PEImage* pOwner, BOOL bNTSafeLoad, BOOL bThrowOnError) |
| 39 | { |
| 40 | STANDARD_VM_CONTRACT; |
| 41 | |
| 42 | #if defined(CROSSGEN_COMPILE) || defined(FEATURE_PAL) |
| 43 | return PEImageLayout::Map(pOwner->GetFileHandle(), pOwner); |
| 44 | #else |
| 45 | PEImageLayoutHolder pAlloc(new LoadedImageLayout(pOwner,bNTSafeLoad,bThrowOnError)); |
| 46 | if (pAlloc->GetBase()==NULL) |
| 47 | return NULL; |
| 48 | return pAlloc.Extract(); |
| 49 | #endif |
| 50 | } |
| 51 | |
| 52 | PEImageLayout* PEImageLayout::LoadFlat(HANDLE hFile,PEImage* pOwner) |
| 53 | { |
| 54 | STANDARD_VM_CONTRACT; |
| 55 | return new FlatImageLayout(hFile,pOwner); |
| 56 | } |
| 57 | |
| 58 | PEImageLayout* PEImageLayout::Map(HANDLE hFile, PEImage* pOwner) |
| 59 | { |
| 60 | CONTRACT(PEImageLayout*) |
| 61 | { |
| 62 | THROWS; |
| 63 | GC_TRIGGERS; |
| 64 | MODE_ANY; |
| 65 | PRECONDITION(CheckPointer(pOwner)); |
| 66 | POSTCONDITION(CheckPointer(RETVAL)); |
| 67 | POSTCONDITION(RETVAL->CheckFormat()); |
| 68 | } |
| 69 | CONTRACT_END; |
| 70 | |
| 71 | PEImageLayoutHolder pAlloc(new MappedImageLayout(hFile,pOwner)); |
| 72 | if (pAlloc->GetBase()==NULL) |
| 73 | { |
| 74 | //cross-platform or a bad image |
| 75 | PEImageLayoutHolder pFlat(new FlatImageLayout(hFile, pOwner)); |
| 76 | if (!pFlat->CheckFormat()) |
| 77 | ThrowHR(COR_E_BADIMAGEFORMAT); |
| 78 | |
| 79 | pAlloc=new ConvertedImageLayout(pFlat); |
| 80 | } |
| 81 | else |
| 82 | if(!pAlloc->CheckFormat()) |
| 83 | ThrowHR(COR_E_BADIMAGEFORMAT); |
| 84 | RETURN pAlloc.Extract(); |
| 85 | } |
| 86 | |
| 87 | #ifdef FEATURE_PREJIT |
| 88 | |
| 89 | #ifdef FEATURE_PAL |
| 90 | DWORD SectionCharacteristicsToPageProtection(UINT characteristics) |
| 91 | { |
| 92 | _ASSERTE((characteristics & VAL32(IMAGE_SCN_MEM_READ)) != 0); |
| 93 | DWORD pageProtection; |
| 94 | |
| 95 | if ((characteristics & VAL32(IMAGE_SCN_MEM_WRITE)) != 0) |
| 96 | { |
| 97 | if ((characteristics & VAL32(IMAGE_SCN_MEM_EXECUTE)) != 0) |
| 98 | { |
| 99 | pageProtection = PAGE_EXECUTE_READWRITE; |
| 100 | } |
| 101 | else |
| 102 | { |
| 103 | pageProtection = PAGE_READWRITE; |
| 104 | } |
| 105 | } |
| 106 | else |
| 107 | { |
| 108 | if ((characteristics & VAL32(IMAGE_SCN_MEM_EXECUTE)) != 0) |
| 109 | { |
| 110 | pageProtection = PAGE_EXECUTE_READ; |
| 111 | } |
| 112 | else |
| 113 | { |
| 114 | pageProtection = PAGE_READONLY; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | return pageProtection; |
| 119 | } |
| 120 | #endif // FEATURE_PAL |
| 121 | |
| 122 | //To force base relocation on Vista (which uses ASLR), unmask IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE |
| 123 | //(0x40) for OptionalHeader.DllCharacteristics |
| 124 | void PEImageLayout::ApplyBaseRelocations() |
| 125 | { |
| 126 | STANDARD_VM_CONTRACT; |
| 127 | |
| 128 | SetRelocated(); |
| 129 | |
| 130 | // |
| 131 | // Note that this is not a univeral routine for applying relocations. It handles only the subset |
| 132 | // required by NGen images. Also, it assumes that the image format is valid. |
| 133 | // |
| 134 | |
| 135 | SSIZE_T delta = (SIZE_T) GetBase() - (SIZE_T) GetPreferredBase(); |
| 136 | |
| 137 | // Nothing to do - image is loaded at preferred base |
| 138 | if (delta == 0) |
| 139 | return; |
| 140 | |
| 141 | LOG((LF_LOADER, LL_INFO100, "PEImage: Applying base relocations (preferred: %x, actual: %x)\n" , |
| 142 | GetPreferredBase(), GetBase())); |
| 143 | |
| 144 | COUNT_T dirSize; |
| 145 | TADDR dir = GetDirectoryEntryData(IMAGE_DIRECTORY_ENTRY_BASERELOC, &dirSize); |
| 146 | |
| 147 | // Minimize number of calls to VirtualProtect by keeping a whole section unprotected at a time. |
| 148 | BYTE * pWriteableRegion = NULL; |
| 149 | SIZE_T cbWriteableRegion = 0; |
| 150 | DWORD dwOldProtection = 0; |
| 151 | |
| 152 | BYTE * pFlushRegion = NULL; |
| 153 | SIZE_T cbFlushRegion = 0; |
| 154 | // The page size of PE file relocs is always 4096 bytes |
| 155 | const SIZE_T cbPageSize = 4096; |
| 156 | |
| 157 | COUNT_T dirPos = 0; |
| 158 | while (dirPos < dirSize) |
| 159 | { |
| 160 | PIMAGE_BASE_RELOCATION r = (PIMAGE_BASE_RELOCATION)(dir + dirPos); |
| 161 | |
| 162 | COUNT_T fixupsSize = VAL32(r->SizeOfBlock); |
| 163 | |
| 164 | USHORT *fixups = (USHORT *) (r + 1); |
| 165 | |
| 166 | _ASSERTE(fixupsSize > sizeof(IMAGE_BASE_RELOCATION)); |
| 167 | _ASSERTE((fixupsSize - sizeof(IMAGE_BASE_RELOCATION)) % 2 == 0); |
| 168 | |
| 169 | COUNT_T fixupsCount = (fixupsSize - sizeof(IMAGE_BASE_RELOCATION)) / 2; |
| 170 | |
| 171 | _ASSERTE((BYTE *)(fixups + fixupsCount) <= (BYTE *)(dir + dirSize)); |
| 172 | |
| 173 | DWORD rva = VAL32(r->VirtualAddress); |
| 174 | |
| 175 | BYTE * pageAddress = (BYTE *)GetBase() + rva; |
| 176 | |
| 177 | // Check whether the page is outside the unprotected region |
| 178 | if ((SIZE_T)(pageAddress - pWriteableRegion) >= cbWriteableRegion) |
| 179 | { |
| 180 | // Restore the protection |
| 181 | if (dwOldProtection != 0) |
| 182 | { |
| 183 | BOOL bExecRegion = (dwOldProtection & (PAGE_EXECUTE | PAGE_EXECUTE_READ | |
| 184 | PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY)) != 0; |
| 185 | |
| 186 | if (!ClrVirtualProtect(pWriteableRegion, cbWriteableRegion, |
| 187 | dwOldProtection, &dwOldProtection)) |
| 188 | ThrowLastError(); |
| 189 | |
| 190 | dwOldProtection = 0; |
| 191 | } |
| 192 | |
| 193 | USHORT fixup = VAL16(fixups[0]); |
| 194 | |
| 195 | IMAGE_SECTION_HEADER *pSection = RvaToSection(rva + (fixup & 0xfff)); |
| 196 | PREFIX_ASSUME(pSection != NULL); |
| 197 | |
| 198 | pWriteableRegion = (BYTE*)GetRvaData(VAL32(pSection->VirtualAddress)); |
| 199 | cbWriteableRegion = VAL32(pSection->SizeOfRawData); |
| 200 | |
| 201 | // Unprotect the section if it is not writable |
| 202 | if (((pSection->Characteristics & VAL32(IMAGE_SCN_MEM_WRITE)) == 0)) |
| 203 | { |
| 204 | DWORD dwNewProtection = PAGE_READWRITE; |
| 205 | #if defined(FEATURE_PAL) && !defined(CROSSGEN_COMPILE) |
| 206 | if (((pSection->Characteristics & VAL32(IMAGE_SCN_MEM_EXECUTE)) != 0)) |
| 207 | { |
| 208 | // On SELinux, we cannot change protection that doesn't have execute access rights |
| 209 | // to one that has it, so we need to set the protection to RWX instead of RW |
| 210 | dwNewProtection = PAGE_EXECUTE_READWRITE; |
| 211 | } |
| 212 | #endif // FEATURE_PAL && !CROSSGEN_COMPILE |
| 213 | if (!ClrVirtualProtect(pWriteableRegion, cbWriteableRegion, |
| 214 | dwNewProtection, &dwOldProtection)) |
| 215 | ThrowLastError(); |
| 216 | #ifdef FEATURE_PAL |
| 217 | dwOldProtection = SectionCharacteristicsToPageProtection(pSection->Characteristics); |
| 218 | #endif // FEATURE_PAL |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | BYTE* pEndAddressToFlush = NULL; |
| 223 | for (COUNT_T fixupIndex = 0; fixupIndex < fixupsCount; fixupIndex++) |
| 224 | { |
| 225 | USHORT fixup = VAL16(fixups[fixupIndex]); |
| 226 | |
| 227 | BYTE * address = pageAddress + (fixup & 0xfff); |
| 228 | |
| 229 | switch (fixup>>12) |
| 230 | { |
| 231 | case IMAGE_REL_BASED_PTR: |
| 232 | *(TADDR *)address += delta; |
| 233 | pEndAddressToFlush = max(pEndAddressToFlush, address + sizeof(TADDR)); |
| 234 | break; |
| 235 | |
| 236 | #ifdef _TARGET_ARM_ |
| 237 | case IMAGE_REL_BASED_THUMB_MOV32: |
| 238 | PutThumb2Mov32((UINT16 *)address, GetThumb2Mov32((UINT16 *)address) + (INT32)delta); |
| 239 | pEndAddressToFlush = max(pEndAddressToFlush, address + 8); |
| 240 | break; |
| 241 | #endif |
| 242 | |
| 243 | case IMAGE_REL_BASED_ABSOLUTE: |
| 244 | //no adjustment |
| 245 | break; |
| 246 | |
| 247 | default: |
| 248 | _ASSERTE(!"Unhandled reloc type!" ); |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | BOOL bExecRegion = (dwOldProtection & (PAGE_EXECUTE | PAGE_EXECUTE_READ | |
| 253 | PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY)) != 0; |
| 254 | |
| 255 | if (bExecRegion && pEndAddressToFlush != NULL) |
| 256 | { |
| 257 | // If the current page is not next to the pending region to flush, flush the current pending region and start a new one |
| 258 | if (pageAddress >= pFlushRegion + cbFlushRegion + cbPageSize || pageAddress < pFlushRegion) |
| 259 | { |
| 260 | if (pFlushRegion != NULL) |
| 261 | { |
| 262 | ClrFlushInstructionCache(pFlushRegion, cbFlushRegion); |
| 263 | } |
| 264 | pFlushRegion = pageAddress; |
| 265 | } |
| 266 | |
| 267 | cbFlushRegion = pEndAddressToFlush - pFlushRegion; |
| 268 | } |
| 269 | |
| 270 | dirPos += fixupsSize; |
| 271 | } |
| 272 | _ASSERTE(dirSize == dirPos); |
| 273 | |
| 274 | #ifndef CROSSGEN_COMPILE |
| 275 | if (dwOldProtection != 0) |
| 276 | { |
| 277 | BOOL bExecRegion = (dwOldProtection & (PAGE_EXECUTE | PAGE_EXECUTE_READ | |
| 278 | PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY)) != 0; |
| 279 | |
| 280 | // Restore the protection |
| 281 | if (!ClrVirtualProtect(pWriteableRegion, cbWriteableRegion, |
| 282 | dwOldProtection, &dwOldProtection)) |
| 283 | ThrowLastError(); |
| 284 | } |
| 285 | #endif // CROSSGEN_COMPILE |
| 286 | |
| 287 | if (pFlushRegion != NULL) |
| 288 | { |
| 289 | ClrFlushInstructionCache(pFlushRegion, cbFlushRegion); |
| 290 | } |
| 291 | } |
| 292 | #endif // FEATURE_PREJIT |
| 293 | |
| 294 | |
| 295 | RawImageLayout::RawImageLayout(const void *flat, COUNT_T size,PEImage* pOwner) |
| 296 | { |
| 297 | CONTRACTL |
| 298 | { |
| 299 | CONSTRUCTOR_CHECK; |
| 300 | THROWS; |
| 301 | GC_TRIGGERS; |
| 302 | MODE_ANY; |
| 303 | INJECT_FAULT(COMPlusThrowOM();); |
| 304 | } |
| 305 | CONTRACTL_END; |
| 306 | m_pOwner=pOwner; |
| 307 | m_Layout=LAYOUT_FLAT; |
| 308 | |
| 309 | if (size) |
| 310 | { |
| 311 | HandleHolder mapping(WszCreateFileMapping(INVALID_HANDLE_VALUE, NULL, |
| 312 | PAGE_READWRITE, 0, |
| 313 | size, NULL)); |
| 314 | if (mapping==NULL) |
| 315 | ThrowLastError(); |
| 316 | m_DataCopy.Assign(CLRMapViewOfFile(mapping, FILE_MAP_ALL_ACCESS, 0, 0, 0)); |
| 317 | if(m_DataCopy==NULL) |
| 318 | ThrowLastError(); |
| 319 | memcpy(m_DataCopy,flat,size); |
| 320 | flat=m_DataCopy; |
| 321 | } |
| 322 | TESTHOOKCALL(ImageMapped(GetPath(),flat,IM_FLAT)); |
| 323 | Init((void*)flat,size); |
| 324 | } |
| 325 | RawImageLayout::RawImageLayout(const void *mapped, PEImage* pOwner, BOOL bTakeOwnership, BOOL bFixedUp) |
| 326 | { |
| 327 | CONTRACTL |
| 328 | { |
| 329 | CONSTRUCTOR_CHECK; |
| 330 | THROWS; |
| 331 | GC_TRIGGERS; |
| 332 | MODE_ANY; |
| 333 | INJECT_FAULT(COMPlusThrowOM();); |
| 334 | } |
| 335 | CONTRACTL_END; |
| 336 | m_pOwner=pOwner; |
| 337 | m_Layout=LAYOUT_MAPPED; |
| 338 | |
| 339 | if (bTakeOwnership) |
| 340 | { |
| 341 | #ifndef FEATURE_PAL |
| 342 | PathString wszDllName; |
| 343 | WszGetModuleFileName((HMODULE)mapped, wszDllName); |
| 344 | |
| 345 | m_LibraryHolder=CLRLoadLibraryEx(wszDllName,NULL,GetLoadWithAlteredSearchPathFlag()); |
| 346 | #else // !FEATURE_PAL |
| 347 | _ASSERTE(!"bTakeOwnership Should not be used on FEATURE_PAL" ); |
| 348 | #endif // !FEATURE_PAL |
| 349 | } |
| 350 | |
| 351 | TESTHOOKCALL(ImageMapped(GetPath(),mapped,bFixedUp?IM_IMAGEMAP|IM_FIXEDUP:IM_IMAGEMAP)); |
| 352 | IfFailThrow(Init((void*)mapped,(bool)(bFixedUp!=FALSE))); |
| 353 | } |
| 354 | |
| 355 | ConvertedImageLayout::ConvertedImageLayout(PEImageLayout* source) |
| 356 | { |
| 357 | CONTRACTL |
| 358 | { |
| 359 | CONSTRUCTOR_CHECK; |
| 360 | STANDARD_VM_CHECK; |
| 361 | } |
| 362 | CONTRACTL_END; |
| 363 | m_Layout=LAYOUT_LOADED; |
| 364 | m_pOwner=source->m_pOwner; |
| 365 | _ASSERTE(!source->IsMapped()); |
| 366 | |
| 367 | if (!source->HasNTHeaders()) |
| 368 | EEFileLoadException::Throw(GetPath(), COR_E_BADIMAGEFORMAT); |
| 369 | LOG((LF_LOADER, LL_INFO100, "PEImage: Opening manually mapped stream\n" )); |
| 370 | |
| 371 | |
| 372 | m_FileMap.Assign(WszCreateFileMapping(INVALID_HANDLE_VALUE, NULL, |
| 373 | PAGE_READWRITE, 0, |
| 374 | source->GetVirtualSize(), NULL)); |
| 375 | if (m_FileMap == NULL) |
| 376 | ThrowLastError(); |
| 377 | |
| 378 | |
| 379 | m_FileView.Assign(CLRMapViewOfFileEx(m_FileMap, FILE_MAP_ALL_ACCESS, 0, 0, 0, |
| 380 | (void *) source->GetPreferredBase())); |
| 381 | if (m_FileView == NULL) |
| 382 | m_FileView.Assign(CLRMapViewOfFile(m_FileMap, FILE_MAP_ALL_ACCESS, 0, 0, 0)); |
| 383 | |
| 384 | if (m_FileView == NULL) |
| 385 | ThrowLastError(); |
| 386 | |
| 387 | source->LayoutILOnly(m_FileView, TRUE); //@TODO should be false for streams |
| 388 | TESTHOOKCALL(ImageMapped(GetPath(),m_FileView,IM_IMAGEMAP)); |
| 389 | IfFailThrow(Init(m_FileView)); |
| 390 | |
| 391 | #ifdef CROSSGEN_COMPILE |
| 392 | if (HasNativeHeader()) |
| 393 | ApplyBaseRelocations(); |
| 394 | #endif |
| 395 | } |
| 396 | |
| 397 | MappedImageLayout::MappedImageLayout(HANDLE hFile, PEImage* pOwner) |
| 398 | { |
| 399 | CONTRACTL |
| 400 | { |
| 401 | CONSTRUCTOR_CHECK; |
| 402 | STANDARD_VM_CHECK; |
| 403 | } |
| 404 | CONTRACTL_END; |
| 405 | m_Layout=LAYOUT_MAPPED; |
| 406 | m_pOwner=pOwner; |
| 407 | |
| 408 | // If mapping was requested, try to do SEC_IMAGE mapping |
| 409 | LOG((LF_LOADER, LL_INFO100, "PEImage: Opening OS mapped %S (hFile %p)\n" , (LPCWSTR) GetPath(), hFile)); |
| 410 | |
| 411 | #ifndef FEATURE_PAL |
| 412 | |
| 413 | |
| 414 | // Let OS map file for us |
| 415 | |
| 416 | // This may fail on e.g. cross-platform (32/64) loads. |
| 417 | m_FileMap.Assign(WszCreateFileMapping(hFile, NULL, PAGE_READONLY | SEC_IMAGE, 0, 0, NULL)); |
| 418 | if (m_FileMap == NULL) |
| 419 | { |
| 420 | #ifndef CROSSGEN_COMPILE |
| 421 | |
| 422 | // Capture last error as it may get reset below. |
| 423 | |
| 424 | DWORD dwLastError = GetLastError(); |
| 425 | // There is no reflection-only load on CoreCLR and so we can always throw an error here. |
| 426 | // It is important on Windows Phone. All assemblies that we load must have SEC_IMAGE set |
| 427 | // so that the OS can perform signature verification. |
| 428 | if (pOwner->IsFile()) |
| 429 | { |
| 430 | EEFileLoadException::Throw(pOwner->GetPathForErrorMessages(), HRESULT_FROM_WIN32(dwLastError)); |
| 431 | } |
| 432 | else |
| 433 | { |
| 434 | // Throw generic exception. |
| 435 | ThrowWin32(dwLastError); |
| 436 | } |
| 437 | |
| 438 | #endif // CROSSGEN_COMPILE |
| 439 | |
| 440 | return; |
| 441 | } |
| 442 | |
| 443 | #ifdef _DEBUG |
| 444 | // Force relocs by occuping the preferred base while the actual mapping is performed |
| 445 | CLRMapViewHolder forceRelocs; |
| 446 | if (PEDecoder::GetForceRelocs()) |
| 447 | { |
| 448 | forceRelocs.Assign(CLRMapViewOfFile(m_FileMap, 0, 0, 0, 0)); |
| 449 | } |
| 450 | #endif // _DEBUG |
| 451 | |
| 452 | m_FileView.Assign(CLRMapViewOfFile(m_FileMap, 0, 0, 0, 0)); |
| 453 | if (m_FileView == NULL) |
| 454 | ThrowLastError(); |
| 455 | TESTHOOKCALL(ImageMapped(GetPath(),m_FileView,IM_IMAGEMAP)); |
| 456 | IfFailThrow(Init((void *) m_FileView)); |
| 457 | |
| 458 | #ifdef CROSSGEN_COMPILE |
| 459 | //Do base relocation for PE. Unlike LoadLibrary, MapViewOfFile will not do that for us even with SEC_IMAGE |
| 460 | if (pOwner->IsTrustedNativeImage()) |
| 461 | { |
| 462 | // This should never happen in correctly setup system, but do a quick check right anyway to |
| 463 | // avoid running too far with bogus data |
| 464 | |
| 465 | if (!HasCorHeader()) |
| 466 | ThrowHR(COR_E_BADIMAGEFORMAT); |
| 467 | |
| 468 | // For phone, we need to be permissive of MSIL assemblies pretending to be native images, |
| 469 | // to support forced fall back to JIT |
| 470 | // if (!HasNativeHeader()) |
| 471 | // ThrowHR(COR_E_BADIMAGEFORMAT); |
| 472 | |
| 473 | if (HasNativeHeader() && g_fAllowNativeImages) |
| 474 | { |
| 475 | if (!IsNativeMachineFormat()) |
| 476 | ThrowHR(COR_E_BADIMAGEFORMAT); |
| 477 | |
| 478 | ApplyBaseRelocations(); |
| 479 | } |
| 480 | } |
| 481 | else |
| 482 | #endif |
| 483 | if (!IsNativeMachineFormat() && !IsI386()) |
| 484 | { |
| 485 | //can't rely on the image |
| 486 | Reset(); |
| 487 | return; |
| 488 | } |
| 489 | |
| 490 | #ifdef _DEBUG |
| 491 | if (forceRelocs != NULL) |
| 492 | { |
| 493 | forceRelocs.Release(); |
| 494 | |
| 495 | if (CheckNTHeaders()) { |
| 496 | // Reserve the space so nobody can use it. A potential bug is likely to |
| 497 | // result in a plain AV this way. It is not a good idea to use the original |
| 498 | // mapping for the reservation since since it would lock the file on the disk. |
| 499 | |
| 500 | // ignore any errors |
| 501 | ClrVirtualAlloc((void*)GetPreferredBase(), GetVirtualSize(), MEM_RESERVE, PAGE_NOACCESS); |
| 502 | } |
| 503 | } |
| 504 | #endif // _DEBUG |
| 505 | |
| 506 | #else //!FEATURE_PAL |
| 507 | |
| 508 | #ifndef CROSSGEN_COMPILE |
| 509 | m_LoadedFile = PAL_LOADLoadPEFile(hFile); |
| 510 | |
| 511 | if (m_LoadedFile == NULL) |
| 512 | { |
| 513 | // For CoreCLR, try to load all files via LoadLibrary first. If LoadLibrary did not work, retry using |
| 514 | // regular mapping - but not for native images. |
| 515 | if (pOwner->IsTrustedNativeImage()) |
| 516 | ThrowHR(E_FAIL); // we don't have any indication of what kind of failure. Possibly a corrupt image. |
| 517 | return; |
| 518 | } |
| 519 | |
| 520 | LOG((LF_LOADER, LL_INFO1000, "PEImage: image %S (hFile %p) mapped @ %p\n" , |
| 521 | (LPCWSTR) GetPath(), hFile, (void*)m_LoadedFile)); |
| 522 | |
| 523 | TESTHOOKCALL(ImageMapped(GetPath(),m_LoadedFile,IM_IMAGEMAP)); |
| 524 | IfFailThrow(Init((void *) m_LoadedFile)); |
| 525 | |
| 526 | if (!HasCorHeader()) |
| 527 | ThrowHR(COR_E_BADIMAGEFORMAT); |
| 528 | |
| 529 | if ((HasNativeHeader() || HasReadyToRunHeader()) && g_fAllowNativeImages) |
| 530 | { |
| 531 | //Do base relocation for PE, if necessary. |
| 532 | if (!IsNativeMachineFormat()) |
| 533 | ThrowHR(COR_E_BADIMAGEFORMAT); |
| 534 | |
| 535 | ApplyBaseRelocations(); |
| 536 | SetRelocated(); |
| 537 | } |
| 538 | |
| 539 | #else // !CROSSGEN_COMPILE |
| 540 | m_LoadedFile = NULL; |
| 541 | #endif // !CROSSGEN_COMPILE |
| 542 | |
| 543 | #endif // !FEATURE_PAL |
| 544 | } |
| 545 | |
| 546 | #if !defined(CROSSGEN_COMPILE) && !defined(FEATURE_PAL) |
| 547 | LoadedImageLayout::LoadedImageLayout(PEImage* pOwner, BOOL bNTSafeLoad, BOOL bThrowOnError) |
| 548 | { |
| 549 | CONTRACTL |
| 550 | { |
| 551 | CONSTRUCTOR_CHECK; |
| 552 | STANDARD_VM_CHECK; |
| 553 | PRECONDITION(CheckPointer(pOwner)); |
| 554 | } |
| 555 | CONTRACTL_END; |
| 556 | |
| 557 | m_Layout=LAYOUT_LOADED; |
| 558 | m_pOwner=pOwner; |
| 559 | |
| 560 | DWORD dwFlags = GetLoadWithAlteredSearchPathFlag(); |
| 561 | if (bNTSafeLoad) |
| 562 | dwFlags|=DONT_RESOLVE_DLL_REFERENCES; |
| 563 | |
| 564 | m_Module = CLRLoadLibraryEx(pOwner->GetPath(), NULL, dwFlags); |
| 565 | if (m_Module == NULL) |
| 566 | { |
| 567 | if (!bThrowOnError) |
| 568 | return; |
| 569 | |
| 570 | // Fetch the HRESULT upfront before anybody gets a chance to corrupt it |
| 571 | HRESULT hr = HRESULT_FROM_GetLastError(); |
| 572 | EEFileLoadException::Throw(pOwner->GetPath(), hr, NULL); |
| 573 | } |
| 574 | TESTHOOKCALL(ImageMapped(GetPath(),m_Module,IM_LOADLIBRARY)); |
| 575 | IfFailThrow(Init(m_Module,true)); |
| 576 | |
| 577 | LOG((LF_LOADER, LL_INFO1000, "PEImage: Opened HMODULE %S\n" , (LPCWSTR) GetPath())); |
| 578 | } |
| 579 | #endif // !CROSSGEN_COMPILE && !FEATURE_PAL |
| 580 | |
| 581 | FlatImageLayout::FlatImageLayout(HANDLE hFile, PEImage* pOwner) |
| 582 | { |
| 583 | CONTRACTL |
| 584 | { |
| 585 | CONSTRUCTOR_CHECK; |
| 586 | STANDARD_VM_CHECK; |
| 587 | PRECONDITION(CheckPointer(pOwner)); |
| 588 | } |
| 589 | CONTRACTL_END; |
| 590 | m_Layout=LAYOUT_FLAT; |
| 591 | m_pOwner=pOwner; |
| 592 | LOG((LF_LOADER, LL_INFO100, "PEImage: Opening flat %S\n" , (LPCWSTR) GetPath())); |
| 593 | |
| 594 | COUNT_T size = SafeGetFileSize(hFile, NULL); |
| 595 | if (size == 0xffffffff && GetLastError() != NOERROR) |
| 596 | { |
| 597 | ThrowLastError(); |
| 598 | } |
| 599 | |
| 600 | // It's okay if resource files are length zero |
| 601 | if (size > 0) |
| 602 | { |
| 603 | m_FileMap.Assign(WszCreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0, NULL)); |
| 604 | if (m_FileMap == NULL) |
| 605 | ThrowLastError(); |
| 606 | |
| 607 | m_FileView.Assign(CLRMapViewOfFile(m_FileMap, FILE_MAP_READ, 0, 0, 0)); |
| 608 | if (m_FileView == NULL) |
| 609 | ThrowLastError(); |
| 610 | } |
| 611 | TESTHOOKCALL(ImageMapped(GetPath(),m_FileView,IM_FLAT)); |
| 612 | Init(m_FileView, size); |
| 613 | } |
| 614 | |
| 615 | |
| 616 | #endif // !DACESS_COMPILE |
| 617 | |
| 618 | |
| 619 | |
| 620 | #ifdef DACCESS_COMPILE |
| 621 | void |
| 622 | PEImageLayout::EnumMemoryRegions(CLRDataEnumMemoryFlags flags) |
| 623 | { |
| 624 | WRAPPER_NO_CONTRACT; |
| 625 | DAC_ENUM_VTHIS(); |
| 626 | EMEM_OUT(("MEM: %p PEFile\n" , dac_cast<TADDR>(this))); |
| 627 | PEDecoder::EnumMemoryRegions(flags,false); |
| 628 | } |
| 629 | #endif //DACCESS_COMPILE |
| 630 | |