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949f388f | 1 | /*++ @file |
2 | ||
3 | Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR> | |
4 | Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.<BR> | |
5 | This program and the accompanying materials | |
6 | are licensed and made available under the terms and conditions of the BSD License | |
7 | which accompanies this distribution. The full text of the license may be found at | |
8 | http://opensource.org/licenses/bsd-license.php | |
9 | ||
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | ||
13 | **/ | |
14 | ||
15 | #include "SecMain.h" | |
16 | ||
17 | #ifdef __APPLE__ | |
18 | #define MAP_ANONYMOUS MAP_ANON | |
19 | char *gGdbWorkingFileName = NULL; | |
20 | #endif | |
21 | ||
22 | ||
23 | // | |
24 | // Globals | |
25 | // | |
26 | ||
27 | EMU_THUNK_PPI mSecEmuThunkPpi = { | |
28 | GasketSecUnixPeiAutoScan, | |
29 | GasketSecUnixFdAddress, | |
65e3f333 | 30 | GasketSecEmuThunkAddress |
949f388f | 31 | }; |
32 | ||
949f388f | 33 | |
34 | ||
35 | ||
36 | // | |
37 | // Default information about where the FD is located. | |
38 | // This array gets filled in with information from EFI_FIRMWARE_VOLUMES | |
39 | // EFI_FIRMWARE_VOLUMES is a host environment variable set by system.cmd. | |
40 | // The number of array elements is allocated base on parsing | |
41 | // EFI_FIRMWARE_VOLUMES and the memory is never freed. | |
42 | // | |
65e3f333 | 43 | UINTN gFdInfoCount = 0; |
44 | EMU_FD_INFO *gFdInfo; | |
949f388f | 45 | |
46 | // | |
47 | // Array that supports seperate memory rantes. | |
48 | // The memory ranges are set in system.cmd via the EFI_MEMORY_SIZE variable. | |
49 | // The number of array elements is allocated base on parsing | |
50 | // EFI_MEMORY_SIZE and the memory is never freed. | |
51 | // | |
65e3f333 | 52 | UINTN gSystemMemoryCount = 0; |
53 | EMU_SYSTEM_MEMORY *gSystemMemory; | |
949f388f | 54 | |
55 | ||
56 | ||
57 | UINTN mImageContextModHandleArraySize = 0; | |
58 | IMAGE_CONTEXT_TO_MOD_HANDLE *mImageContextModHandleArray = NULL; | |
59 | ||
60 | ||
61 | ||
949f388f | 62 | /*++ |
63 | ||
64 | Routine Description: | |
65 | Main entry point to SEC for Unix. This is a unix program | |
66 | ||
67 | Arguments: | |
68 | Argc - Number of command line arguments | |
69 | Argv - Array of command line argument strings | |
70 | Envp - Array of environmemt variable strings | |
71 | ||
72 | Returns: | |
73 | 0 - Normal exit | |
74 | 1 - Abnormal exit | |
75 | ||
76 | **/ | |
65e3f333 | 77 | int |
78 | main ( | |
79 | IN int Argc, | |
80 | IN char **Argv, | |
81 | IN char **Envp | |
82 | ) | |
949f388f | 83 | { |
84 | EFI_STATUS Status; | |
85 | EFI_PHYSICAL_ADDRESS InitialStackMemory; | |
86 | UINT64 InitialStackMemorySize; | |
87 | UINTN Index; | |
88 | UINTN Index1; | |
89 | UINTN Index2; | |
90 | UINTN PeiIndex; | |
91 | CHAR8 *FileName; | |
92 | BOOLEAN Done; | |
65e3f333 | 93 | EFI_PEI_FILE_HANDLE FileHandle; |
94 | VOID *SecFile; | |
949f388f | 95 | CHAR16 *MemorySizeStr; |
96 | CHAR16 *FirmwareVolumesStr; | |
97 | UINTN *StackPointer; | |
98 | ||
65e3f333 | 99 | setbuf (stdout, 0); |
100 | setbuf (stderr, 0); | |
949f388f | 101 | |
102 | MemorySizeStr = (CHAR16 *) PcdGetPtr (PcdEmuMemorySize); | |
103 | FirmwareVolumesStr = (CHAR16 *) PcdGetPtr (PcdEmuFirmwareVolume); | |
104 | ||
65e3f333 | 105 | printf ("\nEDK II UNIX Emulation Environment from edk2.sourceforge.net\n"); |
949f388f | 106 | |
107 | // | |
108 | // PPIs pased into PEI_CORE | |
109 | // | |
949f388f | 110 | AddThunkPpi (EFI_PEI_PPI_DESCRIPTOR_PPI, &gEmuThunkPpiGuid, &mSecEmuThunkPpi); |
949f388f | 111 | |
112 | SecInitThunkProtocol (); | |
113 | ||
114 | // | |
115 | // Emulator Bus Driver Thunks | |
116 | // | |
117 | AddThunkProtocol (&gX11ThunkIo, (CHAR16 *)PcdGetPtr (PcdEmuGop), TRUE); | |
118 | AddThunkProtocol (&gPosixFileSystemThunkIo, (CHAR16 *)PcdGetPtr (PcdEmuFileSystem), TRUE); | |
033d0e5f | 119 | AddThunkProtocol (&gBlockIoThunkIo, (CHAR16 *)PcdGetPtr (PcdEmuVirtualDisk), TRUE); |
949f388f | 120 | |
033d0e5f | 121 | |
122 | ||
949f388f | 123 | // |
124 | // Emulator other Thunks | |
125 | // | |
126 | AddThunkProtocol (&gPthreadThunkIo, (CHAR16 *)PcdGetPtr (PcdEmuApCount), FALSE); | |
127 | ||
128 | // EmuSecLibConstructor (); | |
65e3f333 | 129 | |
130 | ||
131 | gPpiList = GetThunkPpiList (); | |
132 | ||
949f388f | 133 | |
134 | #ifdef __APPLE__ | |
135 | // | |
136 | // We can't use dlopen on OS X, so we need a scheme to get symboles into gdb | |
137 | // We need to create a temp file that contains gdb commands so we can load | |
138 | // symbols when we load every PE/COFF image. | |
139 | // | |
140 | Index = strlen (*Argv); | |
141 | gGdbWorkingFileName = malloc (Index + strlen(".gdb") + 1); | |
142 | strcpy (gGdbWorkingFileName, *Argv); | |
143 | strcat (gGdbWorkingFileName, ".gdb"); | |
144 | #endif | |
145 | ||
146 | ||
147 | // | |
148 | // Allocate space for gSystemMemory Array | |
149 | // | |
150 | gSystemMemoryCount = CountSeperatorsInString (MemorySizeStr, '!') + 1; | |
151 | gSystemMemory = calloc (gSystemMemoryCount, sizeof (EMU_SYSTEM_MEMORY)); | |
152 | if (gSystemMemory == NULL) { | |
153 | printf ("ERROR : Can not allocate memory for system. Exiting.\n"); | |
154 | exit (1); | |
155 | } | |
156 | // | |
157 | // Allocate space for gSystemMemory Array | |
158 | // | |
159 | gFdInfoCount = CountSeperatorsInString (FirmwareVolumesStr, '!') + 1; | |
160 | gFdInfo = calloc (gFdInfoCount, sizeof (EMU_FD_INFO)); | |
161 | if (gFdInfo == NULL) { | |
162 | printf ("ERROR : Can not allocate memory for fd info. Exiting.\n"); | |
163 | exit (1); | |
164 | } | |
165 | ||
166 | printf (" BootMode 0x%02x\n", (unsigned int)PcdGet32 (PcdEmuBootMode)); | |
167 | ||
168 | // | |
65e3f333 | 169 | // Open up a 128K file to emulate temp memory for SEC. |
949f388f | 170 | // on a real platform this would be SRAM, or using the cache as RAM. |
171 | // Set InitialStackMemory to zero so UnixOpenFile will allocate a new mapping | |
172 | // | |
173 | InitialStackMemorySize = STACK_SIZE; | |
65e3f333 | 174 | InitialStackMemory = (UINTN)MapMemory ( |
175 | 0, (UINT32) InitialStackMemorySize, | |
176 | PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE | |
177 | ); | |
949f388f | 178 | if (InitialStackMemory == 0) { |
179 | printf ("ERROR : Can not open SecStack Exiting\n"); | |
180 | exit (1); | |
181 | } | |
182 | ||
65e3f333 | 183 | printf (" OS Emulator passing in %u KB of temp RAM at 0x%08lx to SEC\n", |
949f388f | 184 | (unsigned int)(InitialStackMemorySize / 1024), |
65e3f333 | 185 | (unsigned long)InitialStackMemory |
186 | ); | |
949f388f | 187 | |
188 | for (StackPointer = (UINTN*) (UINTN) InitialStackMemory; | |
189 | StackPointer < (UINTN*)(UINTN)((UINTN) InitialStackMemory + (UINT64) InitialStackMemorySize); | |
190 | StackPointer ++) { | |
191 | *StackPointer = 0x5AA55AA5; | |
192 | } | |
193 | ||
194 | // | |
195 | // Open All the firmware volumes and remember the info in the gFdInfo global | |
196 | // | |
197 | FileName = (CHAR8 *)malloc (StrLen (FirmwareVolumesStr) + 1); | |
198 | if (FileName == NULL) { | |
199 | printf ("ERROR : Can not allocate memory for firmware volume string\n"); | |
200 | exit (1); | |
201 | } | |
202 | ||
203 | Index2 = 0; | |
65e3f333 | 204 | for (Done = FALSE, Index = 0, PeiIndex = 0, SecFile = NULL; |
949f388f | 205 | FirmwareVolumesStr[Index2] != 0; |
206 | Index++) { | |
65e3f333 | 207 | for (Index1 = 0; (FirmwareVolumesStr[Index2] != '!') && (FirmwareVolumesStr[Index2] != 0); Index2++) { |
949f388f | 208 | FileName[Index1++] = FirmwareVolumesStr[Index2]; |
65e3f333 | 209 | } |
210 | if (FirmwareVolumesStr[Index2] == '!') { | |
949f388f | 211 | Index2++; |
65e3f333 | 212 | } |
949f388f | 213 | FileName[Index1] = '\0'; |
214 | ||
215 | // | |
216 | // Open the FD and remmeber where it got mapped into our processes address space | |
217 | // | |
218 | Status = MapFile ( | |
65e3f333 | 219 | FileName, |
220 | &gFdInfo[Index].Address, | |
221 | &gFdInfo[Index].Size | |
222 | ); | |
949f388f | 223 | if (EFI_ERROR (Status)) { |
224 | printf ("ERROR : Can not open Firmware Device File %s (%x). Exiting.\n", FileName, (unsigned int)Status); | |
225 | exit (1); | |
226 | } | |
227 | ||
65e3f333 | 228 | printf (" FD loaded from %s at 0x%08lx",FileName, (unsigned long)gFdInfo[Index].Address); |
949f388f | 229 | |
65e3f333 | 230 | if (SecFile == NULL) { |
949f388f | 231 | // |
65e3f333 | 232 | // Assume the beginning of the FD is an FV and look for the SEC Core. |
949f388f | 233 | // Load the first one we find. |
234 | // | |
65e3f333 | 235 | FileHandle = NULL; |
236 | Status = PeiServicesFfsFindNextFile ( | |
237 | EFI_FV_FILETYPE_SECURITY_CORE, | |
238 | (EFI_PEI_FV_HANDLE)(UINTN)gFdInfo[Index].Address, | |
239 | &FileHandle | |
240 | ); | |
949f388f | 241 | if (!EFI_ERROR (Status)) { |
65e3f333 | 242 | Status = PeiServicesFfsFindSectionData (EFI_SECTION_PE32, FileHandle, &SecFile); |
243 | if (!EFI_ERROR (Status)) { | |
244 | PeiIndex = Index; | |
245 | printf (" contains SEC Core"); | |
246 | } | |
949f388f | 247 | } |
248 | } | |
249 | ||
250 | printf ("\n"); | |
251 | } | |
252 | // | |
253 | // Calculate memory regions and store the information in the gSystemMemory | |
254 | // global for later use. The autosizing code will use this data to | |
255 | // map this memory into the SEC process memory space. | |
256 | // | |
257 | Index1 = 0; | |
258 | Index = 0; | |
259 | while (1) { | |
260 | UINTN val = 0; | |
261 | // | |
262 | // Save the size of the memory. | |
263 | // | |
264 | while (MemorySizeStr[Index1] >= '0' && MemorySizeStr[Index1] <= '9') { | |
265 | val = val * 10 + MemorySizeStr[Index1] - '0'; | |
266 | Index1++; | |
267 | } | |
268 | gSystemMemory[Index++].Size = val * 0x100000; | |
65e3f333 | 269 | if (MemorySizeStr[Index1] == 0) { |
949f388f | 270 | break; |
65e3f333 | 271 | } |
949f388f | 272 | Index1++; |
273 | } | |
274 | ||
275 | printf ("\n"); | |
276 | ||
277 | // | |
65e3f333 | 278 | // Hand off to SEC |
949f388f | 279 | // |
65e3f333 | 280 | SecLoadFromCore ((UINTN) InitialStackMemory, (UINTN) InitialStackMemorySize, (UINTN) gFdInfo[0].Address, SecFile); |
949f388f | 281 | |
282 | // | |
65e3f333 | 283 | // If we get here, then the SEC Core returned. This is an error as SEC should |
284 | // always hand off to PEI Core and then on to DXE Core. | |
949f388f | 285 | // |
65e3f333 | 286 | printf ("ERROR : SEC returned\n"); |
949f388f | 287 | exit (1); |
288 | } | |
289 | ||
65e3f333 | 290 | |
949f388f | 291 | EFI_PHYSICAL_ADDRESS * |
292 | MapMemory ( | |
293 | INTN fd, | |
294 | UINT64 length, | |
295 | INTN prot, | |
296 | INTN flags) | |
297 | { | |
298 | STATIC UINTN base = 0x40000000; | |
299 | CONST UINTN align = (1 << 24); | |
300 | VOID *res = NULL; | |
301 | BOOLEAN isAligned = 0; | |
302 | ||
303 | // | |
304 | // Try to get an aligned block somewhere in the address space of this | |
305 | // process. | |
306 | // | |
307 | while((!isAligned) && (base != 0)) { | |
308 | res = mmap ((void *)base, length, prot, flags, fd, 0); | |
309 | if (res == MAP_FAILED) { | |
310 | return NULL; | |
311 | } | |
312 | if ((((UINTN)res) & ~(align-1)) == (UINTN)res) { | |
313 | isAligned=1; | |
65e3f333 | 314 | } else { |
949f388f | 315 | munmap(res, length); |
316 | base += align; | |
317 | } | |
318 | } | |
319 | return res; | |
320 | } | |
321 | ||
65e3f333 | 322 | |
949f388f | 323 | /*++ |
324 | ||
325 | Routine Description: | |
326 | Opens and memory maps a file using Unix services. If BaseAddress is non zero | |
327 | the process will try and allocate the memory starting at BaseAddress. | |
328 | ||
329 | Arguments: | |
330 | FileName - The name of the file to open and map | |
331 | MapSize - The amount of the file to map in bytes | |
332 | CreationDisposition - The flags to pass to CreateFile(). Use to create new files for | |
333 | memory emulation, and exiting files for firmware volume emulation | |
334 | BaseAddress - The base address of the mapped file in the user address space. | |
335 | If passed in as NULL the a new memory region is used. | |
336 | If passed in as non NULL the request memory region is used for | |
337 | the mapping of the file into the process space. | |
338 | Length - The size of the mapped region in bytes | |
339 | ||
340 | Returns: | |
341 | EFI_SUCCESS - The file was opened and mapped. | |
342 | EFI_NOT_FOUND - FileName was not found in the current directory | |
343 | EFI_DEVICE_ERROR - An error occured attempting to map the opened file | |
344 | ||
345 | **/ | |
65e3f333 | 346 | EFI_STATUS |
347 | MapFile ( | |
348 | IN CHAR8 *FileName, | |
349 | IN OUT EFI_PHYSICAL_ADDRESS *BaseAddress, | |
350 | OUT UINT64 *Length | |
351 | ) | |
949f388f | 352 | { |
353 | int fd; | |
354 | VOID *res; | |
355 | UINTN FileSize; | |
356 | ||
357 | fd = open (FileName, O_RDONLY); | |
65e3f333 | 358 | if (fd < 0) { |
949f388f | 359 | return EFI_NOT_FOUND; |
65e3f333 | 360 | } |
949f388f | 361 | FileSize = lseek (fd, 0, SEEK_END); |
362 | ||
363 | ||
65e3f333 | 364 | res = MapMemory (fd, FileSize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE); |
949f388f | 365 | |
366 | close (fd); | |
367 | ||
65e3f333 | 368 | if (res == MAP_FAILED) { |
949f388f | 369 | return EFI_DEVICE_ERROR; |
65e3f333 | 370 | } |
371 | ||
949f388f | 372 | *Length = (UINT64) FileSize; |
373 | *BaseAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) res; | |
374 | ||
375 | return EFI_SUCCESS; | |
376 | } | |
377 | ||
378 | ||
379 | ||
949f388f | 380 | /*++ |
381 | ||
382 | Routine Description: | |
65e3f333 | 383 | This is the service to load the SEC Core from the Firmware Volume |
949f388f | 384 | |
385 | Arguments: | |
65e3f333 | 386 | LargestRegion - Memory to use for SEC. |
949f388f | 387 | LargestRegionSize - Size of Memory to use for PEI |
388 | BootFirmwareVolumeBase - Start of the Boot FV | |
65e3f333 | 389 | PeiCorePe32File - SEC PE32 |
949f388f | 390 | |
391 | Returns: | |
392 | Success means control is transfered and thus we should never return | |
393 | ||
394 | **/ | |
65e3f333 | 395 | VOID |
396 | SecLoadFromCore ( | |
397 | IN UINTN LargestRegion, | |
398 | IN UINTN LargestRegionSize, | |
399 | IN UINTN BootFirmwareVolumeBase, | |
400 | IN VOID *PeiCorePe32File | |
401 | ) | |
949f388f | 402 | { |
403 | EFI_STATUS Status; | |
404 | EFI_PHYSICAL_ADDRESS TopOfMemory; | |
405 | VOID *TopOfStack; | |
949f388f | 406 | EFI_PHYSICAL_ADDRESS PeiCoreEntryPoint; |
949f388f | 407 | EFI_SEC_PEI_HAND_OFF *SecCoreData; |
408 | UINTN PeiStackSize; | |
409 | ||
410 | // | |
411 | // Compute Top Of Memory for Stack and PEI Core Allocations | |
412 | // | |
413 | TopOfMemory = LargestRegion + LargestRegionSize; | |
414 | PeiStackSize = (UINTN)RShiftU64((UINT64)STACK_SIZE,1); | |
415 | ||
416 | // | |
417 | // |-----------| <---- TemporaryRamBase + TemporaryRamSize | |
418 | // | Heap | | |
419 | // | | | |
420 | // |-----------| <---- StackBase / PeiTemporaryMemoryBase | |
421 | // | | | |
422 | // | Stack | | |
423 | // |-----------| <---- TemporaryRamBase | |
424 | // | |
425 | TopOfStack = (VOID *)(LargestRegion + PeiStackSize); | |
426 | TopOfMemory = LargestRegion + PeiStackSize; | |
427 | ||
428 | // | |
429 | // Reservet space for storing PeiCore's parament in stack. | |
430 | // | |
431 | TopOfStack = (VOID *)((UINTN)TopOfStack - sizeof (EFI_SEC_PEI_HAND_OFF) - CPU_STACK_ALIGNMENT); | |
432 | TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT); | |
433 | ||
434 | ||
435 | // | |
436 | // Bind this information into the SEC hand-off state | |
437 | // | |
65e3f333 | 438 | SecCoreData = (EFI_SEC_PEI_HAND_OFF*)(UINTN) TopOfStack; |
949f388f | 439 | SecCoreData->DataSize = sizeof(EFI_SEC_PEI_HAND_OFF); |
440 | SecCoreData->BootFirmwareVolumeBase = (VOID*)BootFirmwareVolumeBase; | |
441 | SecCoreData->BootFirmwareVolumeSize = PcdGet32 (PcdEmuFirmwareFdSize); | |
442 | SecCoreData->TemporaryRamBase = (VOID*)(UINTN)LargestRegion; | |
443 | SecCoreData->TemporaryRamSize = STACK_SIZE; | |
444 | SecCoreData->StackBase = SecCoreData->TemporaryRamBase; | |
445 | SecCoreData->StackSize = PeiStackSize; | |
446 | SecCoreData->PeiTemporaryRamBase = (VOID*) ((UINTN) SecCoreData->TemporaryRamBase + PeiStackSize); | |
447 | SecCoreData->PeiTemporaryRamSize = STACK_SIZE - PeiStackSize; | |
448 | ||
449 | // | |
65e3f333 | 450 | // Find the SEC Core Entry Point |
949f388f | 451 | // |
65e3f333 | 452 | Status = SecPeCoffGetEntryPoint (PeiCorePe32File, (VOID **)&PeiCoreEntryPoint); |
949f388f | 453 | if (EFI_ERROR (Status)) { |
454 | return ; | |
455 | } | |
456 | ||
457 | // | |
65e3f333 | 458 | // Transfer control to the SEC Core |
949f388f | 459 | // |
460 | PeiSwitchStacks ( | |
461 | (SWITCH_STACK_ENTRY_POINT) (UINTN) PeiCoreEntryPoint, | |
462 | SecCoreData, | |
65e3f333 | 463 | (VOID *)gPpiList, |
949f388f | 464 | TopOfStack |
465 | ); | |
466 | // | |
65e3f333 | 467 | // If we get here, then the SEC Core returned. This is an error |
949f388f | 468 | // |
469 | return ; | |
470 | } | |
471 | ||
65e3f333 | 472 | |
949f388f | 473 | /*++ |
474 | ||
475 | Routine Description: | |
476 | This service is called from Index == 0 until it returns EFI_UNSUPPORTED. | |
477 | It allows discontiguous memory regions to be supported by the emulator. | |
478 | It uses gSystemMemory[] and gSystemMemoryCount that were created by | |
479 | parsing the host environment variable EFI_MEMORY_SIZE. | |
480 | The size comes from the varaible and the address comes from the call to | |
481 | UnixOpenFile. | |
482 | ||
483 | Arguments: | |
484 | Index - Which memory region to use | |
485 | MemoryBase - Return Base address of memory region | |
486 | MemorySize - Return size in bytes of the memory region | |
487 | ||
488 | Returns: | |
489 | EFI_SUCCESS - If memory region was mapped | |
490 | EFI_UNSUPPORTED - If Index is not supported | |
491 | ||
492 | **/ | |
65e3f333 | 493 | EFI_STATUS |
494 | EFIAPI | |
495 | SecUnixPeiAutoScan ( | |
496 | IN UINTN Index, | |
497 | OUT EFI_PHYSICAL_ADDRESS *MemoryBase, | |
498 | OUT UINT64 *MemorySize | |
499 | ) | |
949f388f | 500 | { |
501 | void *res; | |
502 | ||
503 | if (Index >= gSystemMemoryCount) { | |
504 | return EFI_UNSUPPORTED; | |
505 | } | |
506 | ||
507 | *MemoryBase = 0; | |
65e3f333 | 508 | res = MapMemory ( |
509 | 0, gSystemMemory[Index].Size, | |
510 | PROT_READ | PROT_WRITE | PROT_EXEC, | |
511 | MAP_PRIVATE | MAP_ANONYMOUS | |
512 | ); | |
513 | if (res == MAP_FAILED) { | |
949f388f | 514 | return EFI_DEVICE_ERROR; |
65e3f333 | 515 | } |
949f388f | 516 | *MemorySize = gSystemMemory[Index].Size; |
517 | *MemoryBase = (UINTN)res; | |
518 | gSystemMemory[Index].Memory = *MemoryBase; | |
519 | ||
520 | return EFI_SUCCESS; | |
521 | } | |
522 | ||
65e3f333 | 523 | |
949f388f | 524 | /*++ |
525 | ||
526 | Routine Description: | |
527 | Since the SEC is the only Unix program in stack it must export | |
528 | an interface to do POSIX calls. gUnix is initailized in UnixThunk.c. | |
529 | ||
530 | Arguments: | |
531 | InterfaceSize - sizeof (EFI_WIN_NT_THUNK_PROTOCOL); | |
532 | InterfaceBase - Address of the gUnix global | |
533 | ||
534 | Returns: | |
535 | EFI_SUCCESS - Data returned | |
536 | ||
537 | **/ | |
65e3f333 | 538 | VOID * |
539 | EFIAPI | |
540 | SecEmuThunkAddress ( | |
541 | VOID | |
542 | ) | |
949f388f | 543 | { |
544 | return &gEmuThunkProtocol; | |
545 | } | |
546 | ||
547 | ||
949f388f | 548 | |
549 | RETURN_STATUS | |
550 | EFIAPI | |
551 | SecPeCoffGetEntryPoint ( | |
552 | IN VOID *Pe32Data, | |
553 | IN OUT VOID **EntryPoint | |
554 | ) | |
555 | { | |
65e3f333 | 556 | EFI_STATUS Status; |
557 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext; | |
0ede3853 | 558 | |
559 | ZeroMem (&ImageContext, sizeof (ImageContext)); | |
560 | ImageContext.Handle = Pe32Data; | |
561 | ImageContext.ImageRead = (PE_COFF_LOADER_READ_FILE) SecImageRead; | |
562 | ||
563 | Status = PeCoffLoaderGetImageInfo (&ImageContext); | |
564 | if (EFI_ERROR (Status)) { | |
565 | return Status; | |
566 | } | |
567 | ||
568 | // | |
569 | // Relocate image to match the address where it resides | |
570 | // | |
8f0067d7 | 571 | ImageContext.ImageAddress = (UINTN)Pe32Data; |
0ede3853 | 572 | Status = PeCoffLoaderLoadImage (&ImageContext); |
573 | if (EFI_ERROR (Status)) { | |
65e3f333 | 574 | return Status; |
575 | } | |
949f388f | 576 | |
0ede3853 | 577 | Status = PeCoffLoaderRelocateImage (&ImageContext); |
578 | if (EFI_ERROR (Status)) { | |
579 | return Status; | |
580 | } | |
949f388f | 581 | |
65e3f333 | 582 | // On Unix a dlopen is done that will change the entry point |
583 | SecPeCoffRelocateImageExtraAction (&ImageContext); | |
584 | *EntryPoint = (VOID *)(UINTN)ImageContext.EntryPoint; | |
585 | ||
949f388f | 586 | return Status; |
587 | } | |
588 | ||
589 | ||
590 | ||
949f388f | 591 | /*++ |
592 | ||
593 | Routine Description: | |
594 | Return the FD Size and base address. Since the FD is loaded from a | |
595 | file into host memory only the SEC will know it's address. | |
596 | ||
597 | Arguments: | |
598 | Index - Which FD, starts at zero. | |
599 | FdSize - Size of the FD in bytes | |
600 | FdBase - Start address of the FD. Assume it points to an FV Header | |
601 | FixUp - Difference between actual FD address and build address | |
602 | ||
603 | Returns: | |
604 | EFI_SUCCESS - Return the Base address and size of the FV | |
605 | EFI_UNSUPPORTED - Index does nto map to an FD in the system | |
606 | ||
607 | **/ | |
65e3f333 | 608 | EFI_STATUS |
609 | EFIAPI | |
610 | SecUnixFdAddress ( | |
611 | IN UINTN Index, | |
612 | IN OUT EFI_PHYSICAL_ADDRESS *FdBase, | |
613 | IN OUT UINT64 *FdSize, | |
614 | IN OUT EFI_PHYSICAL_ADDRESS *FixUp | |
615 | ) | |
949f388f | 616 | { |
617 | if (Index >= gFdInfoCount) { | |
618 | return EFI_UNSUPPORTED; | |
619 | } | |
620 | ||
621 | *FdBase = gFdInfo[Index].Address; | |
622 | *FdSize = gFdInfo[Index].Size; | |
623 | *FixUp = 0; | |
624 | ||
625 | if (*FdBase == 0 && *FdSize == 0) { | |
626 | return EFI_UNSUPPORTED; | |
627 | } | |
628 | ||
629 | if (Index == 0) { | |
630 | // | |
631 | // FD 0 has XIP code and well known PCD values | |
632 | // If the memory buffer could not be allocated at the FD build address | |
633 | // the Fixup is the difference. | |
634 | // | |
635 | *FixUp = *FdBase - PcdGet64 (PcdEmuFdBaseAddress); | |
636 | } | |
637 | ||
638 | return EFI_SUCCESS; | |
639 | } | |
640 | ||
949f388f | 641 | |
949f388f | 642 | /*++ |
643 | ||
644 | Routine Description: | |
645 | Count the number of seperators in String | |
646 | ||
647 | Arguments: | |
648 | String - String to process | |
649 | Seperator - Item to count | |
650 | ||
651 | Returns: | |
652 | Number of Seperator in String | |
653 | ||
654 | **/ | |
65e3f333 | 655 | UINTN |
656 | CountSeperatorsInString ( | |
657 | IN const CHAR16 *String, | |
658 | IN CHAR16 Seperator | |
659 | ) | |
949f388f | 660 | { |
661 | UINTN Count; | |
662 | ||
663 | for (Count = 0; *String != '\0'; String++) { | |
664 | if (*String == Seperator) { | |
665 | Count++; | |
666 | } | |
667 | } | |
668 | ||
669 | return Count; | |
670 | } | |
671 | ||
672 | ||
0ede3853 | 673 | EFI_STATUS |
674 | EFIAPI | |
675 | SecImageRead ( | |
676 | IN VOID *FileHandle, | |
677 | IN UINTN FileOffset, | |
678 | IN OUT UINTN *ReadSize, | |
679 | OUT VOID *Buffer | |
680 | ) | |
681 | /*++ | |
682 | ||
683 | Routine Description: | |
684 | Support routine for the PE/COFF Loader that reads a buffer from a PE/COFF file | |
685 | ||
686 | Arguments: | |
687 | FileHandle - The handle to the PE/COFF file | |
688 | FileOffset - The offset, in bytes, into the file to read | |
689 | ReadSize - The number of bytes to read from the file starting at FileOffset | |
690 | Buffer - A pointer to the buffer to read the data into. | |
691 | ||
692 | Returns: | |
693 | EFI_SUCCESS - ReadSize bytes of data were read into Buffer from the PE/COFF file starting at FileOffset | |
694 | ||
695 | **/ | |
696 | { | |
697 | CHAR8 *Destination8; | |
698 | CHAR8 *Source8; | |
699 | UINTN Length; | |
700 | ||
701 | Destination8 = Buffer; | |
702 | Source8 = (CHAR8 *) ((UINTN) FileHandle + FileOffset); | |
703 | Length = *ReadSize; | |
704 | while (Length--) { | |
705 | *(Destination8++) = *(Source8++); | |
706 | } | |
707 | ||
708 | return EFI_SUCCESS; | |
709 | } | |
710 | ||
711 | ||
949f388f | 712 | /*++ |
713 | ||
714 | Routine Description: | |
715 | Store the ModHandle in an array indexed by the Pdb File name. | |
716 | The ModHandle is needed to unload the image. | |
717 | ||
718 | Arguments: | |
719 | ImageContext - Input data returned from PE Laoder Library. Used to find the | |
720 | .PDB file name of the PE Image. | |
721 | ModHandle - Returned from LoadLibraryEx() and stored for call to | |
722 | FreeLibrary(). | |
723 | ||
724 | Returns: | |
725 | EFI_SUCCESS - ModHandle was stored. | |
726 | ||
727 | **/ | |
65e3f333 | 728 | EFI_STATUS |
729 | AddHandle ( | |
730 | IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext, | |
731 | IN VOID *ModHandle | |
732 | ) | |
949f388f | 733 | { |
734 | UINTN Index; | |
735 | IMAGE_CONTEXT_TO_MOD_HANDLE *Array; | |
736 | UINTN PreviousSize; | |
737 | ||
738 | ||
739 | Array = mImageContextModHandleArray; | |
740 | for (Index = 0; Index < mImageContextModHandleArraySize; Index++, Array++) { | |
741 | if (Array->ImageContext == NULL) { | |
742 | // | |
743 | // Make a copy of the stirng and store the ModHandle | |
744 | // | |
745 | Array->ImageContext = ImageContext; | |
746 | Array->ModHandle = ModHandle; | |
747 | return EFI_SUCCESS; | |
748 | } | |
749 | } | |
750 | ||
751 | // | |
752 | // No free space in mImageContextModHandleArray so grow it by | |
753 | // IMAGE_CONTEXT_TO_MOD_HANDLE entires. realloc will | |
754 | // copy the old values to the new locaiton. But it does | |
755 | // not zero the new memory area. | |
756 | // | |
757 | PreviousSize = mImageContextModHandleArraySize * sizeof (IMAGE_CONTEXT_TO_MOD_HANDLE); | |
758 | mImageContextModHandleArraySize += MAX_IMAGE_CONTEXT_TO_MOD_HANDLE_ARRAY_SIZE; | |
759 | ||
760 | mImageContextModHandleArray = realloc (mImageContextModHandleArray, mImageContextModHandleArraySize * sizeof (IMAGE_CONTEXT_TO_MOD_HANDLE)); | |
761 | if (mImageContextModHandleArray == NULL) { | |
762 | ASSERT (FALSE); | |
763 | return EFI_OUT_OF_RESOURCES; | |
764 | } | |
765 | ||
766 | memset (mImageContextModHandleArray + PreviousSize, 0, MAX_IMAGE_CONTEXT_TO_MOD_HANDLE_ARRAY_SIZE * sizeof (IMAGE_CONTEXT_TO_MOD_HANDLE)); | |
767 | ||
768 | return AddHandle (ImageContext, ModHandle); | |
769 | } | |
770 | ||
771 | ||
949f388f | 772 | /*++ |
773 | ||
774 | Routine Description: | |
775 | Return the ModHandle and delete the entry in the array. | |
776 | ||
777 | Arguments: | |
778 | ImageContext - Input data returned from PE Laoder Library. Used to find the | |
779 | .PDB file name of the PE Image. | |
780 | ||
781 | Returns: | |
782 | ModHandle - ModHandle assoicated with ImageContext is returned | |
783 | NULL - No ModHandle associated with ImageContext | |
784 | ||
785 | **/ | |
65e3f333 | 786 | VOID * |
787 | RemoveHandle ( | |
788 | IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext | |
789 | ) | |
949f388f | 790 | { |
791 | UINTN Index; | |
792 | IMAGE_CONTEXT_TO_MOD_HANDLE *Array; | |
793 | ||
794 | if (ImageContext->PdbPointer == NULL) { | |
795 | // | |
796 | // If no PDB pointer there is no ModHandle so return NULL | |
797 | // | |
798 | return NULL; | |
799 | } | |
800 | ||
801 | Array = mImageContextModHandleArray; | |
802 | for (Index = 0; Index < mImageContextModHandleArraySize; Index++, Array++) { | |
803 | if (Array->ImageContext == ImageContext) { | |
804 | // | |
805 | // If you find a match return it and delete the entry | |
806 | // | |
807 | Array->ImageContext = NULL; | |
808 | return Array->ModHandle; | |
809 | } | |
810 | } | |
811 | ||
812 | return NULL; | |
813 | } | |
814 | ||
815 | ||
816 | ||
817 | // | |
818 | // Target for gdb breakpoint in a script that uses gGdbWorkingFileName to source a | |
819 | // add-symbol-file command. Hey what can you say scripting in gdb is not that great.... | |
820 | // | |
821 | // Put .gdbinit in the CWD where you do gdb SecMain.dll for source level debug | |
822 | // | |
823 | // cat .gdbinit | |
824 | // b SecGdbScriptBreak | |
825 | // command | |
826 | // silent | |
65e3f333 | 827 | // source SecMain.gdb |
949f388f | 828 | // c |
829 | // end | |
830 | // | |
831 | VOID | |
832 | SecGdbScriptBreak ( | |
833 | VOID | |
834 | ) | |
835 | { | |
836 | } | |
837 | ||
838 | VOID | |
839 | SecUnixLoaderBreak ( | |
840 | VOID | |
841 | ) | |
842 | { | |
843 | } | |
844 | ||
845 | BOOLEAN | |
846 | IsPdbFile ( | |
847 | IN CHAR8 *PdbFileName | |
848 | ) | |
849 | { | |
850 | UINTN Len; | |
851 | ||
852 | if (PdbFileName == NULL) { | |
853 | return FALSE; | |
854 | } | |
855 | ||
856 | Len = strlen (PdbFileName); | |
857 | if ((Len < 5)|| (PdbFileName[Len - 4] != '.')) { | |
858 | return FALSE; | |
859 | } | |
860 | ||
861 | if ((PdbFileName[Len - 3] == 'P' || PdbFileName[Len - 3] == 'p') && | |
862 | (PdbFileName[Len - 2] == 'D' || PdbFileName[Len - 2] == 'd') && | |
863 | (PdbFileName[Len - 1] == 'B' || PdbFileName[Len - 1] == 'b')) { | |
864 | return TRUE; | |
865 | } | |
866 | ||
867 | return FALSE; | |
868 | } | |
869 | ||
870 | ||
871 | #define MAX_SPRINT_BUFFER_SIZE 0x200 | |
872 | ||
873 | void | |
874 | PrintLoadAddress ( | |
875 | IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext | |
876 | ) | |
877 | { | |
878 | if (ImageContext->PdbPointer == NULL) { | |
879 | fprintf (stderr, | |
880 | "0x%08lx Loading NO DEBUG with entry point 0x%08lx\n", | |
881 | (unsigned long)(ImageContext->ImageAddress), | |
882 | (unsigned long)ImageContext->EntryPoint | |
883 | ); | |
884 | } else { | |
885 | fprintf (stderr, | |
886 | "0x%08lx Loading %s with entry point 0x%08lx\n", | |
887 | (unsigned long)(ImageContext->ImageAddress + ImageContext->SizeOfHeaders), | |
888 | ImageContext->PdbPointer, | |
889 | (unsigned long)ImageContext->EntryPoint | |
890 | ); | |
891 | } | |
892 | // Keep output synced up | |
893 | fflush (stderr); | |
894 | } | |
895 | ||
896 | ||
897 | VOID | |
898 | EFIAPI | |
899 | SecPeCoffRelocateImageExtraAction ( | |
900 | IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext | |
901 | ) | |
902 | { | |
903 | ||
904 | #ifdef __APPLE__ | |
905 | BOOLEAN EnabledOnEntry; | |
906 | ||
907 | // | |
908 | // Make sure writting of the file is an atomic operation | |
909 | // | |
910 | if (SecInterruptEanbled ()) { | |
911 | SecDisableInterrupt (); | |
912 | EnabledOnEntry = TRUE; | |
913 | } else { | |
914 | EnabledOnEntry = FALSE; | |
915 | } | |
916 | ||
917 | PrintLoadAddress (ImageContext); | |
918 | ||
919 | // | |
920 | // In mach-o (OS X executable) dlopen() can only load files in the MH_DYLIB of MH_BUNDLE format. | |
921 | // To convert to PE/COFF we need to construct a mach-o with the MH_PRELOAD format. We create | |
922 | // .dSYM files for the PE/COFF images that can be used by gdb for source level debugging. | |
923 | // | |
924 | FILE *GdbTempFile; | |
925 | ||
926 | // | |
927 | // In the Mach-O to PE/COFF conversion the size of the PE/COFF headers is not accounted for. | |
928 | // Thus we need to skip over the PE/COFF header when giving load addresses for our symbol table. | |
929 | // | |
930 | if (ImageContext->PdbPointer != NULL && !IsPdbFile (ImageContext->PdbPointer)) { | |
931 | // | |
932 | // Now we have a database of the images that are currently loaded | |
933 | // | |
934 | ||
935 | // | |
936 | // 'symbol-file' will clear out currnet symbol mappings in gdb. | |
937 | // you can do a 'add-symbol-file filename address' for every image we loaded to get source | |
938 | // level debug in gdb. Note Sec, being a true application will work differently. | |
939 | // | |
940 | // We add the PE/COFF header size into the image as the mach-O does not have a header in | |
941 | // loaded into system memory. | |
942 | // | |
943 | // This gives us a data base of gdb commands and after something is unloaded that entry will be | |
944 | // removed. We don't yet have the scheme of how to comunicate with gdb, but we have the | |
945 | // data base of info ready to roll. | |
946 | // | |
947 | // We could use qXfer:libraries:read, but OS X GDB does not currently support it. | |
948 | // <library-list> | |
949 | // <library name="/lib/libc.so.6"> // ImageContext->PdbPointer | |
950 | // <segment address="0x10000000"/> // ImageContext->ImageAddress + ImageContext->SizeOfHeaders | |
951 | // </library> | |
952 | // </library-list> | |
953 | // | |
954 | ||
955 | // | |
956 | // Write the file we need for the gdb script | |
957 | // | |
958 | GdbTempFile = fopen (gGdbWorkingFileName, "w"); | |
959 | if (GdbTempFile != NULL) { | |
960 | fprintf (GdbTempFile, "add-symbol-file %s 0x%08lx\n", ImageContext->PdbPointer, (long unsigned int)(ImageContext->ImageAddress + ImageContext->SizeOfHeaders)); | |
961 | fclose (GdbTempFile); | |
962 | ||
963 | // | |
964 | // Target for gdb breakpoint in a script that uses gGdbWorkingFileName to set a breakpoint. | |
965 | // Hey what can you say scripting in gdb is not that great.... | |
966 | // | |
967 | SecGdbScriptBreak (); | |
968 | } else { | |
969 | ASSERT (FALSE); | |
970 | } | |
971 | ||
972 | AddHandle (ImageContext, ImageContext->PdbPointer); | |
973 | ||
974 | if (EnabledOnEntry) { | |
975 | SecEnableInterrupt (); | |
976 | } | |
977 | ||
978 | ||
979 | } | |
980 | ||
981 | #else | |
982 | ||
983 | void *Handle = NULL; | |
984 | void *Entry = NULL; | |
985 | ||
986 | if (ImageContext->PdbPointer == NULL) { | |
987 | return; | |
988 | } | |
989 | ||
990 | if (!IsPdbFile (ImageContext->PdbPointer)) { | |
991 | return; | |
992 | } | |
993 | ||
65e3f333 | 994 | fprintf ( |
995 | stderr, | |
949f388f | 996 | "Loading %s 0x%08lx - entry point 0x%08lx\n", |
997 | ImageContext->PdbPointer, | |
998 | (unsigned long)ImageContext->ImageAddress, | |
65e3f333 | 999 | (unsigned long)ImageContext->EntryPoint |
1000 | ); | |
949f388f | 1001 | |
1002 | Handle = dlopen (ImageContext->PdbPointer, RTLD_NOW); | |
1003 | ||
1004 | if (Handle) { | |
1005 | Entry = dlsym (Handle, "_ModuleEntryPoint"); | |
1006 | } else { | |
1007 | printf("%s\n", dlerror()); | |
1008 | } | |
1009 | ||
1010 | if (Entry != NULL) { | |
1011 | ImageContext->EntryPoint = (UINTN)Entry; | |
65e3f333 | 1012 | printf ("Change %s Entrypoint to :0x%08lx\n", ImageContext->PdbPointer, (unsigned long)Entry); |
949f388f | 1013 | } |
1014 | ||
1015 | SecUnixLoaderBreak (); | |
1016 | ||
1017 | #endif | |
1018 | ||
1019 | return; | |
1020 | } | |
1021 | ||
1022 | ||
1023 | VOID | |
1024 | EFIAPI | |
1025 | SecPeCoffUnloadImageExtraAction ( | |
1026 | IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext | |
1027 | ) | |
1028 | { | |
1029 | VOID *Handle; | |
1030 | ||
1031 | Handle = RemoveHandle (ImageContext); | |
1032 | ||
1033 | #ifdef __APPLE__ | |
1034 | FILE *GdbTempFile; | |
1035 | BOOLEAN EnabledOnEntry; | |
1036 | ||
1037 | if (Handle != NULL) { | |
1038 | // | |
1039 | // Need to skip .PDB files created from VC++ | |
1040 | // | |
1041 | if (!IsPdbFile (ImageContext->PdbPointer)) { | |
1042 | if (SecInterruptEanbled ()) { | |
1043 | SecDisableInterrupt (); | |
1044 | EnabledOnEntry = TRUE; | |
1045 | } else { | |
1046 | EnabledOnEntry = FALSE; | |
1047 | } | |
1048 | ||
1049 | // | |
1050 | // Write the file we need for the gdb script | |
1051 | // | |
1052 | GdbTempFile = fopen (gGdbWorkingFileName, "w"); | |
1053 | if (GdbTempFile != NULL) { | |
1054 | fprintf (GdbTempFile, "remove-symbol-file %s\n", ImageContext->PdbPointer); | |
1055 | fclose (GdbTempFile); | |
1056 | ||
1057 | // | |
1058 | // Target for gdb breakpoint in a script that uses gGdbWorkingFileName to set a breakpoint. | |
1059 | // Hey what can you say scripting in gdb is not that great.... | |
1060 | // | |
1061 | SecGdbScriptBreak (); | |
1062 | } else { | |
1063 | ASSERT (FALSE); | |
1064 | } | |
1065 | ||
1066 | if (EnabledOnEntry) { | |
1067 | SecEnableInterrupt (); | |
1068 | } | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | #else | |
1073 | // | |
1074 | // Don't want to confuse gdb with symbols for something that got unloaded | |
1075 | // | |
1076 | if (Handle != NULL) { | |
1077 | dlclose (Handle); | |
1078 | } | |
1079 | ||
1080 | #endif | |
1081 | return; | |
1082 | } | |
1083 | ||
1084 |