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1 | /** @file | |
2 | Private include file for GDB stub | |
3 | ||
4 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> | |
5 | ||
6 | This program and the accompanying materials | |
7 | are licensed and made available under the terms and conditions of the BSD License | |
8 | which accompanies this distribution. The full text of the license may be found at | |
9 | http://opensource.org/licenses/bsd-license.php | |
10 | ||
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
13 | ||
14 | **/ | |
15 | ||
16 | #ifndef __GCC_DEBUG_AGENT_INTERNAL__ | |
17 | #define __GCC_DEBUG_AGENT_INTERNAL__ | |
18 | ||
19 | #include <Uefi.h> | |
20 | #include <Library/BaseLib.h> | |
21 | #include <Library/BaseMemoryLib.h> | |
22 | #include <Library/MemoryAllocationLib.h> | |
23 | #include <Library/DebugLib.h> | |
24 | #include <Library/PcdLib.h> | |
25 | #include <Library/GdbSerialLib.h> | |
26 | #include <Library/PrintLib.h> | |
27 | #include <Library/CacheMaintenanceLib.h> | |
28 | #include <Library/DebugAgentTimerLib.h> | |
29 | ||
30 | #include <IndustryStandard/PeImage.h> | |
31 | #include <Protocol/DebugSupport.h> | |
32 | ||
33 | extern CONST CHAR8 mHexToStr[]; | |
34 | ||
35 | // maximum size of input and output buffers | |
36 | // This value came from the show remote command of the gdb we tested against | |
37 | #define MAX_BUF_SIZE 2000 | |
38 | ||
39 | // maximum size of address buffer | |
40 | #define MAX_ADDR_SIZE 32 | |
41 | ||
42 | // maximum size of register number buffer | |
43 | #define MAX_REG_NUM_BUF_SIZE 32 | |
44 | ||
45 | // maximum size of length buffer | |
46 | #define MAX_LENGTH_SIZE 32 | |
47 | ||
48 | // maximum size of T signal members | |
49 | #define MAX_T_SIGNAL_SIZE 64 | |
50 | ||
51 | // the mask used to clear all the cache | |
52 | #define TF_BIT 0x00000100 | |
53 | ||
54 | ||
55 | // | |
56 | // GDB Signal definitions - generic names for interrupts | |
57 | // | |
58 | #define GDB_SIGINT 2 // Interrupt process via ctrl-c | |
59 | #define GDB_SIGILL 4 // Illegal instruction | |
60 | #define GDB_SIGTRAP 5 // Trace Trap (Breakpoint and SingleStep) | |
61 | #define GDB_SIGEMT 7 // Emulator Trap | |
62 | #define GDB_SIGFPE 8 // Floating point exception | |
63 | #define GDB_SIGSEGV 11 // Setgment violation, page fault | |
64 | ||
65 | ||
66 | // | |
67 | // GDB File I/O Error values, zero means no error | |
68 | // Includes all general GDB Unix like error values | |
69 | // | |
70 | #define GDB_EBADMEMADDRBUFSIZE 11 // the buffer that stores memory Address to be read from/written to is not the right size | |
71 | #define GDB_EBADMEMLENGBUFSIZE 12 // the buffer that stores Length is not the right size | |
72 | #define GDB_EBADMEMLENGTH 13 // Length, the given number of bytes to read or write, is not the right size | |
73 | #define GDB_EBADMEMDATA 14 // one of the bytes or nibbles of the memory is leess than 0 | |
74 | #define GDB_EBADMEMDATASIZE 15 // the memory data, 'XX..', is too short or too long | |
75 | #define GDB_EBADBUFSIZE 21 // the buffer created is not the correct size | |
76 | #define GDB_EINVALIDARG 31 // argument is invalid | |
77 | #define GDB_ENOSPACE 41 // | |
78 | #define GDB_EINVALIDBRKPOINTTYPE 51 // the breakpoint type is not recognized | |
79 | #define GDB_EINVALIDREGNUM 61 // given register number is not valid: either <0 or >=Number of Registers | |
80 | #define GDB_EUNKNOWN 255 // unknown | |
81 | ||
82 | ||
83 | // | |
84 | // These devices are open by GDB so we can just read and write to them | |
85 | // | |
86 | #define GDB_STDIN 0x00 | |
87 | #define GDB_STDOUT 0x01 | |
88 | #define GDB_STDERR 0x02 | |
89 | ||
90 | // | |
91 | //Define Register size for different architectures | |
92 | // | |
93 | #if defined (MDE_CPU_IA32) | |
94 | #define REG_SIZE 32 | |
95 | #elif defined (MDE_CPU_X64) | |
96 | #define REG_SIZE 64 | |
97 | #elif defined (MDE_CPU_ARM) | |
98 | #define REG_SIZE 32 | |
99 | #endif | |
100 | ||
101 | ||
102 | typedef struct { | |
103 | EFI_EXCEPTION_TYPE Exception; | |
104 | UINT8 SignalNo; | |
105 | } EFI_EXCEPTION_TYPE_ENTRY; | |
106 | ||
107 | ||
108 | #if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) | |
109 | ||
110 | // | |
111 | // Byte packed structure for DR6 | |
112 | // 32-bits on IA-32 | |
113 | // 64-bits on X64. The upper 32-bits on X64 are reserved | |
114 | // | |
115 | typedef union { | |
116 | struct { | |
117 | UINT32 B0:1; // Breakpoint condition detected | |
118 | UINT32 B1:1; // Breakpoint condition detected | |
119 | UINT32 B2:1; // Breakpoint condition detected | |
120 | UINT32 B3:1; // Breakpoint condition detected | |
121 | UINT32 Reserved_1:9; // Reserved | |
122 | UINT32 BD:1; // Debug register access detected | |
123 | UINT32 BS:1; // Single step | |
124 | UINT32 BT:1; // Task switch | |
125 | UINT32 Reserved_2:16; // Reserved | |
126 | } Bits; | |
127 | UINTN UintN; | |
128 | } IA32_DR6; | |
129 | ||
130 | // | |
131 | // Byte packed structure for DR7 | |
132 | // 32-bits on IA-32 | |
133 | // 64-bits on X64. The upper 32-bits on X64 are reserved | |
134 | // | |
135 | typedef union { | |
136 | struct { | |
137 | UINT32 L0:1; // Local breakpoint enable | |
138 | UINT32 G0:1; // Global breakpoint enable | |
139 | UINT32 L1:1; // Local breakpoint enable | |
140 | UINT32 G1:1; // Global breakpoint enable | |
141 | UINT32 L2:1; // Local breakpoint enable | |
142 | UINT32 G2:1; // Global breakpoint enable | |
143 | UINT32 L3:1; // Local breakpoint enable | |
144 | UINT32 G3:1; // Global breakpoint enable | |
145 | UINT32 LE:1; // Local exact breakpoint enable | |
146 | UINT32 GE:1; // Global exact breakpoint enable | |
147 | UINT32 Reserved_1:3; // Reserved | |
148 | UINT32 GD:1; // Global detect enable | |
149 | UINT32 Reserved_2:2; // Reserved | |
150 | UINT32 RW0:2; // Read/Write field | |
151 | UINT32 LEN0:2; // Length field | |
152 | UINT32 RW1:2; // Read/Write field | |
153 | UINT32 LEN1:2; // Length field | |
154 | UINT32 RW2:2; // Read/Write field | |
155 | UINT32 LEN2:2; // Length field | |
156 | UINT32 RW3:2; // Read/Write field | |
157 | UINT32 LEN3:2; // Length field | |
158 | } Bits; | |
159 | UINTN UintN; | |
160 | } IA32_DR7; | |
161 | ||
162 | #endif /* if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) */ | |
163 | ||
164 | typedef enum { | |
165 | InstructionExecution, //Hardware breakpoint | |
166 | DataWrite, //watch | |
167 | DataRead, //rwatch | |
168 | DataReadWrite, //awatch | |
169 | SoftwareBreakpoint, //Software breakpoint | |
170 | NotSupported | |
171 | } BREAK_TYPE; | |
172 | ||
173 | // | |
174 | // Array of exception types that need to be hooked by the debugger | |
175 | // | |
176 | extern EFI_EXCEPTION_TYPE_ENTRY gExceptionType[]; | |
177 | ||
178 | // | |
179 | // If the periodic callback is called while we are processing an F packet we need | |
180 | // to let the callback know to not read from the serail stream as it could steal | |
181 | // characters from the F reponse packet | |
182 | // | |
183 | extern BOOLEAN gProcessingFPacket; | |
184 | ||
185 | ||
186 | /** | |
187 | Return the number of entries in the gExceptionType[] | |
188 | ||
189 | @retval UINTN, the number of entries in the gExceptionType[] array. | |
190 | **/ | |
191 | UINTN | |
192 | MaxEfiException ( | |
193 | VOID | |
194 | ); | |
195 | ||
196 | ||
197 | /** | |
198 | Check to see if the ISA is supported. | |
199 | ISA = Instruction Set Architecture | |
200 | ||
201 | @retval TRUE if Isa is supported, | |
202 | FALSE otherwise. | |
203 | **/ | |
204 | BOOLEAN | |
205 | CheckIsa ( | |
206 | IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa | |
207 | ); | |
208 | ||
209 | ||
210 | /** | |
211 | Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints | |
212 | ||
213 | @param SystemContext Register content at time of the exception | |
214 | @param GdbExceptionType GDB exception type | |
215 | **/ | |
216 | ||
217 | VOID | |
218 | GdbSendTSignal ( | |
219 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
220 | IN UINT8 GdbExceptionType | |
221 | ); | |
222 | ||
223 | ||
224 | /** | |
225 | Translates the EFI mapping to GDB mapping | |
226 | ||
227 | @param EFIExceptionType EFI Exception that is being processed | |
228 | @retval UINTN that corresponds to EFIExceptionType's GDB exception type number | |
229 | **/ | |
230 | UINT8 | |
231 | ConvertEFItoGDBtype ( | |
232 | IN EFI_EXCEPTION_TYPE EFIExceptionType | |
233 | ); | |
234 | ||
235 | ||
236 | /** | |
237 | Empties the given buffer | |
238 | @param *Buf pointer to the first element in buffer to be emptied | |
239 | **/ | |
240 | VOID | |
241 | EmptyBuffer ( | |
242 | IN CHAR8 *Buf | |
243 | ); | |
244 | ||
245 | ||
246 | /** | |
247 | Converts an 8-bit Hex Char into a INTN. | |
248 | ||
249 | @param Char - the hex character to be converted into UINTN | |
250 | @retval a INTN, from 0 to 15, that corressponds to Char | |
251 | -1 if Char is not a hex character | |
252 | **/ | |
253 | INTN | |
254 | HexCharToInt ( | |
255 | IN CHAR8 Char | |
256 | ); | |
257 | ||
258 | ||
259 | /** 'E NN' | |
260 | Send an error with the given error number after converting to hex. | |
261 | The error number is put into the buffer in hex. '255' is the biggest errno we can send. | |
262 | ex: 162 will be sent as A2. | |
263 | ||
264 | @param errno the error number that will be sent | |
265 | **/ | |
266 | VOID | |
267 | EFIAPI | |
268 | SendError ( | |
269 | IN UINT8 ErrorNum | |
270 | ); | |
271 | ||
272 | ||
273 | /** | |
274 | Send 'OK' when the function is done executing successfully. | |
275 | **/ | |
276 | VOID | |
277 | SendSuccess ( | |
278 | VOID | |
279 | ); | |
280 | ||
281 | ||
282 | /** | |
283 | Send empty packet to specify that particular command/functionality is not supported. | |
284 | **/ | |
285 | VOID | |
286 | SendNotSupported ( | |
287 | VOID | |
288 | ); | |
289 | ||
290 | /** ‘p n’ | |
291 | Reads the n-th register's value into an output buffer and sends it as a packet | |
292 | @param SystemContext Register content at time of the exception | |
293 | @param InBuffer This is the input buffer received from gdb server | |
294 | **/ | |
295 | VOID | |
296 | ReadNthRegister ( | |
297 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
298 | IN CHAR8 *InBuffer | |
299 | ); | |
300 | ||
301 | ||
302 | /** ‘g’ | |
303 | Reads the general registers into an output buffer and sends it as a packet | |
304 | @param SystemContext Register content at time of the exception | |
305 | **/ | |
306 | VOID | |
307 | ReadGeneralRegisters ( | |
308 | IN EFI_SYSTEM_CONTEXT SystemContext | |
309 | ); | |
310 | ||
311 | ||
312 | /** ‘P n...=r...’ | |
313 | Writes the new value of n-th register received into the input buffer to the n-th register | |
314 | @param SystemContext Register content at time of the exception | |
315 | @param InBuffer This is the input buffer received from gdb server | |
316 | **/ | |
317 | VOID | |
318 | WriteNthRegister ( | |
319 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
320 | IN CHAR8 *InBuffer | |
321 | ); | |
322 | ||
323 | ||
324 | /** ‘G XX...’ | |
325 | Writes the new values received into the input buffer to the general registers | |
326 | @param SystemContext Register content at time of the exception | |
327 | @param InBuffer Pointer to the input buffer received from gdb server | |
328 | **/ | |
329 | ||
330 | VOID | |
331 | WriteGeneralRegisters ( | |
332 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
333 | IN CHAR8 *InBuffer | |
334 | ); | |
335 | ||
336 | ||
337 | /** ‘m addr,length ’ | |
338 | Find the Length of the area to read and the start addres. Finally, pass them to | |
339 | another function, TransferFromMemToOutBufAndSend, that will read from that memory space and | |
340 | send it as a packet. | |
341 | ||
342 | @param *PacketData Pointer to Payload data for the packet | |
343 | **/ | |
344 | VOID | |
345 | ReadFromMemory ( | |
346 | IN CHAR8 *PacketData | |
347 | ); | |
348 | ||
349 | ||
350 | /** ‘M addr,length :XX...’ | |
351 | Find the Length of the area in bytes to write and the start addres. Finally, pass them to | |
352 | another function, TransferFromInBufToMem, that will write to that memory space the info in | |
353 | the input buffer. | |
354 | ||
355 | @param PacketData Pointer to Payload data for the packet | |
356 | **/ | |
357 | VOID | |
358 | WriteToMemory ( | |
359 | IN CHAR8 *PacketData | |
360 | ); | |
361 | ||
362 | ||
363 | /** ‘c [addr ]’ | |
364 | Continue. addr is Address to resume. If addr is omitted, resume at current | |
365 | Address. | |
366 | ||
367 | @param SystemContext Register content at time of the exception | |
368 | @param *PacketData Pointer to PacketData | |
369 | **/ | |
370 | ||
371 | VOID | |
372 | ContinueAtAddress ( | |
373 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
374 | IN CHAR8 *PacketData | |
375 | ); | |
376 | ||
377 | ||
378 | /** ‘s [addr ]’ | |
379 | Single step. addr is the Address at which to resume. If addr is omitted, resume | |
380 | at same Address. | |
381 | ||
382 | @param SystemContext Register content at time of the exception | |
383 | @param PacketData Pointer to Payload data for the packet | |
384 | **/ | |
385 | VOID | |
386 | SingleStep ( | |
387 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
388 | IN CHAR8 *PacketData | |
389 | ); | |
390 | ||
391 | /** | |
392 | Insert Single Step in the SystemContext | |
393 | ||
394 | @param SystemContext Register content at time of the exception | |
395 | **/ | |
396 | VOID | |
397 | AddSingleStep ( | |
398 | IN EFI_SYSTEM_CONTEXT SystemContext | |
399 | ); | |
400 | ||
401 | /** | |
402 | Remove Single Step in the SystemContext | |
403 | ||
404 | @param SystemContext Register content at time of the exception | |
405 | **/ | |
406 | VOID | |
407 | RemoveSingleStep ( | |
408 | IN EFI_SYSTEM_CONTEXT SystemContext | |
409 | ); | |
410 | ||
411 | ||
412 | /** | |
413 | ‘Z1, [addr], [length]’ | |
414 | ‘Z2, [addr], [length]’ | |
415 | ‘Z3, [addr], [length]’ | |
416 | ‘Z4, [addr], [length]’ | |
417 | ||
418 | Insert hardware breakpoint/watchpoint at address addr of size length | |
419 | ||
420 | @param SystemContext Register content at time of the exception | |
421 | @param *PacketData Pointer to the Payload data for the packet | |
422 | ||
423 | **/ | |
424 | VOID | |
425 | EFIAPI | |
426 | InsertBreakPoint( | |
427 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
428 | IN CHAR8 *PacketData | |
429 | ); | |
430 | ||
431 | ||
432 | /** | |
433 | ‘z1, [addr], [length]’ | |
434 | ‘z2, [addr], [length]’ | |
435 | ‘z3, [addr], [length]’ | |
436 | ‘z4, [addr], [length]’ | |
437 | ||
438 | Remove hardware breakpoint/watchpoint at address addr of size length | |
439 | ||
440 | @param SystemContext Register content at time of the exception | |
441 | @param *PacketData Pointer to the Payload data for the packet | |
442 | ||
443 | **/ | |
444 | VOID | |
445 | EFIAPI | |
446 | RemoveBreakPoint( | |
447 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
448 | IN CHAR8 *PacketData | |
449 | ); | |
450 | ||
451 | ||
452 | /** | |
453 | Exception Hanldler for GDB. It will be called for all exceptions | |
454 | registered via the gExceptionType[] array. | |
455 | ||
456 | @param ExceptionType Exception that is being processed | |
457 | @param SystemContext Register content at time of the exception | |
458 | ||
459 | **/ | |
460 | VOID | |
461 | EFIAPI | |
462 | GdbExceptionHandler ( | |
463 | IN EFI_EXCEPTION_TYPE ExceptionType, | |
464 | IN OUT EFI_SYSTEM_CONTEXT SystemContext | |
465 | ); | |
466 | ||
467 | ||
468 | /** | |
469 | Periodic callback for GDB. This function is used to catch a ctrl-c or other | |
470 | break in type command from GDB. | |
471 | ||
472 | @param SystemContext Register content at time of the call | |
473 | ||
474 | **/ | |
475 | VOID | |
476 | EFIAPI | |
477 | GdbPeriodicCallBack ( | |
478 | IN OUT EFI_SYSTEM_CONTEXT SystemContext | |
479 | ); | |
480 | ||
481 | ||
482 | /** | |
483 | Make two serail consoles: 1) StdIn and StdOut via GDB. 2) StdErr via GDB. | |
484 | ||
485 | These console show up on the remote system running GDB | |
486 | ||
487 | **/ | |
488 | ||
489 | VOID | |
490 | GdbInitializeSerialConsole ( | |
491 | VOID | |
492 | ); | |
493 | ||
494 | ||
495 | /** | |
496 | Send a GDB Remote Serial Protocol Packet | |
497 | ||
498 | $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$', | |
499 | the packet teminating character '#' and the two digit checksum. | |
500 | ||
501 | If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up | |
502 | in an infinit loop. This is so if you unplug the debugger code just keeps running | |
503 | ||
504 | @param PacketData Payload data for the packet | |
505 | ||
506 | @retval Number of bytes of packet data sent. | |
507 | ||
508 | **/ | |
509 | UINTN | |
510 | SendPacket ( | |
511 | IN CHAR8 *PacketData | |
512 | ); | |
513 | ||
514 | ||
515 | /** | |
516 | Receive a GDB Remote Serial Protocol Packet | |
517 | ||
518 | $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$', | |
519 | the packet teminating character '#' and the two digit checksum. | |
520 | ||
521 | If host re-starts sending a packet without ending the previous packet, only the last valid packet is proccessed. | |
522 | (In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.) | |
523 | ||
524 | If an ack '+' is not sent resend the packet | |
525 | ||
526 | @param PacketData Payload data for the packet | |
527 | ||
528 | @retval Number of bytes of packet data received. | |
529 | ||
530 | **/ | |
531 | UINTN | |
532 | ReceivePacket ( | |
533 | OUT CHAR8 *PacketData, | |
534 | IN UINTN PacketDataSize | |
535 | ); | |
536 | ||
537 | ||
538 | /** | |
539 | Read data from a FileDescriptor. On success number of bytes read is returned. Zero indicates | |
540 | the end of a file. On error -1 is returned. If count is zero, GdbRead returns zero. | |
541 | ||
542 | @param FileDescriptor Device to talk to. | |
543 | @param Buffer Buffer to hold Count bytes that were read | |
544 | @param Count Number of bytes to transfer. | |
545 | ||
546 | @retval -1 Error | |
547 | @retval {other} Number of bytes read. | |
548 | ||
549 | **/ | |
550 | INTN | |
551 | GdbRead ( | |
552 | IN INTN FileDescriptor, | |
553 | OUT VOID *Buffer, | |
554 | IN UINTN Count | |
555 | ); | |
556 | ||
557 | ||
558 | /** | |
559 | Write data to a FileDescriptor. On success number of bytes written is returned. Zero indicates | |
560 | nothing was written. On error -1 is returned. | |
561 | ||
562 | @param FileDescriptor Device to talk to. | |
563 | @param Buffer Buffer to hold Count bytes that are to be written | |
564 | @param Count Number of bytes to transfer. | |
565 | ||
566 | @retval -1 Error | |
567 | @retval {other} Number of bytes written. | |
568 | ||
569 | **/ | |
570 | INTN | |
571 | GdbWrite ( | |
572 | IN INTN FileDescriptor, | |
573 | OUT CONST VOID *Buffer, | |
574 | IN UINTN Count | |
575 | ); | |
576 | ||
577 | UINTN * | |
578 | FindPointerToRegister ( | |
579 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
580 | IN UINTN RegNumber | |
581 | ); | |
582 | ||
583 | CHAR8 * | |
584 | BasicReadRegister ( | |
585 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
586 | IN UINTN RegNumber, | |
587 | IN CHAR8 *OutBufPtr | |
588 | ); | |
589 | ||
590 | VOID | |
591 | TransferFromInBufToMem ( | |
592 | IN UINTN Length, | |
593 | IN UINT8 *Address, | |
594 | IN CHAR8 *NewData | |
595 | ); | |
596 | ||
597 | VOID | |
598 | TransferFromMemToOutBufAndSend ( | |
599 | IN UINTN Length, | |
600 | IN UINT8 *Address | |
601 | ); | |
602 | ||
603 | CHAR8 * | |
604 | BasicWriteRegister ( | |
605 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
606 | IN UINTN RegNumber, | |
607 | IN CHAR8 *InBufPtr | |
608 | ); | |
609 | ||
610 | VOID | |
611 | PrintReg ( | |
612 | EFI_SYSTEM_CONTEXT SystemContext | |
613 | ); | |
614 | ||
615 | UINTN | |
616 | ParseBreakpointPacket ( | |
617 | IN CHAR8 *PacketData, | |
618 | OUT UINTN *Type, | |
619 | OUT UINTN *Address, | |
620 | OUT UINTN *Length | |
621 | ); | |
622 | ||
623 | UINTN | |
624 | GetBreakpointDataAddress ( | |
625 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
626 | IN UINTN BreakpointNumber | |
627 | ); | |
628 | ||
629 | UINTN | |
630 | GetBreakpointDetected ( | |
631 | IN EFI_SYSTEM_CONTEXT SystemContext | |
632 | ); | |
633 | ||
634 | BREAK_TYPE | |
635 | GetBreakpointType ( | |
636 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
637 | IN UINTN BreakpointNumber | |
638 | ); | |
639 | ||
640 | UINTN | |
641 | ConvertLengthData ( | |
642 | IN UINTN Length | |
643 | ); | |
644 | ||
645 | EFI_STATUS | |
646 | FindNextFreeDebugRegister ( | |
647 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
648 | OUT UINTN *Register | |
649 | ); | |
650 | ||
651 | EFI_STATUS | |
652 | EnableDebugRegister ( | |
653 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
654 | IN UINTN Register, | |
655 | IN UINTN Address, | |
656 | IN UINTN Length, | |
657 | IN UINTN Type | |
658 | ); | |
659 | ||
660 | EFI_STATUS | |
661 | FindMatchingDebugRegister ( | |
662 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
663 | IN UINTN Address, | |
664 | IN UINTN Length, | |
665 | IN UINTN Type, | |
666 | OUT UINTN *Register | |
667 | ); | |
668 | ||
669 | EFI_STATUS | |
670 | DisableDebugRegister ( | |
671 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
672 | IN UINTN Register | |
673 | ); | |
674 | ||
675 | VOID | |
676 | InitializeProcessor ( | |
677 | VOID | |
678 | ); | |
679 | ||
680 | /** | |
681 | Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints | |
682 | ||
683 | @param SystemContext Register content at time of the exception | |
684 | @param GdbExceptionType GDB exception type | |
685 | **/ | |
686 | VOID | |
687 | ProcessorSendTSignal ( | |
688 | IN EFI_SYSTEM_CONTEXT SystemContext, | |
689 | IN UINT8 GdbExceptionType, | |
690 | IN OUT CHAR8 *TSignalPtr, | |
691 | IN UINTN SizeOfBuffer | |
692 | ); | |
693 | ||
694 | /**\r | |
695 | Check to see if this exception is related to ctrl-c handling.\r | |
696 | \r | |
697 | @param ExceptionType Exception that is being processed\r | |
698 | @param SystemContext Register content at time of the exception \r | |
699 | \r | |
700 | @return TRUE This was a ctrl-c check that did not find a ctrl-c\r | |
701 | @return FALSE This was not a ctrl-c check or some one hit ctrl-c\r | |
702 | **/\r | |
703 | BOOLEAN\r | |
704 | ProcessorControlC ( \r | |
705 | IN EFI_EXCEPTION_TYPE ExceptionType, \r | |
706 | IN OUT EFI_SYSTEM_CONTEXT SystemContext \r | |
707 | ); | |
708 | ||
709 | ||
710 | /**\r | |
711 | Initialize debug agent.\r | |
712 | \r | |
713 | This function is used to set up debug enviroment. It may enable interrupts.\r | |
714 | \r | |
715 | @param[in] InitFlag Init flag is used to decide initialize process.\r | |
716 | @param[in] Context Context needed according to InitFlag, it was optional.\r | |
717 | \r | |
718 | **/\r | |
719 | VOID\r | |
720 | EFIAPI\r | |
721 | DebugAgentHookExceptions (\r | |
722 | IN UINT32 InitFlag,\r | |
723 | IN VOID *Context OPTIONAL\r | |
724 | );\r | |
725 | ||
726 | ||
727 | #endif |