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1e57a462 | 1 | /** @file\r |
2 | Private include file for GDB stub\r | |
3 | \r | |
4 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
5 | \r | |
878b807a | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
1e57a462 | 7 | \r |
8 | **/\r | |
9 | \r | |
10 | #ifndef __GDB_STUB_INTERNAL__\r | |
11 | #define __GDB_STUB_INTERNAL__\r | |
12 | \r | |
13 | #include <Uefi.h>\r | |
14 | #include <Library/BaseLib.h>\r | |
15 | #include <Library/BaseMemoryLib.h>\r | |
16 | #include <Library/MemoryAllocationLib.h>\r | |
17 | #include <Library/DebugLib.h>\r | |
18 | #include <Library/UefiLib.h>\r | |
19 | #include <Library/UefiBootServicesTableLib.h>\r | |
20 | #include <Library/PcdLib.h>\r | |
21 | #include <Library/GdbSerialLib.h>\r | |
22 | #include <Library/PrintLib.h>\r | |
23 | \r | |
24 | #include <Protocol/DebugSupport.h>\r | |
25 | #include <Protocol/SerialIo.h>\r | |
26 | #include <Protocol/LoadedImage.h>\r | |
27 | #include <Protocol/LoadedImage.h>\r | |
28 | #include <Guid/DebugImageInfoTable.h>\r | |
29 | #include <IndustryStandard/PeImage.h>\r | |
30 | \r | |
31 | extern CONST CHAR8 mHexToStr[];\r | |
32 | \r | |
33 | // maximum size of input and output buffers\r | |
3402aac7 | 34 | // This value came from the show remote command of the gdb we tested against\r |
1e57a462 | 35 | #define MAX_BUF_SIZE 2000\r |
36 | \r | |
37 | // maximum size of address buffer\r | |
38 | #define MAX_ADDR_SIZE 32\r | |
39 | \r | |
40 | // maximum size of register number buffer\r | |
41 | #define MAX_REG_NUM_BUF_SIZE 32\r | |
42 | \r | |
43 | // maximum size of length buffer\r | |
44 | #define MAX_LENGTH_SIZE 32\r | |
45 | \r | |
46 | // maximum size of T signal members\r | |
47 | #define MAX_T_SIGNAL_SIZE 64\r | |
48 | \r | |
49 | // the mask used to clear all the cache\r | |
50 | #define TF_BIT 0x00000100\r | |
51 | \r | |
52 | \r | |
53 | //\r | |
54 | // GDB Signal definitions - generic names for interrupts\r | |
55 | //\r | |
3402aac7 | 56 | #define GDB_SIGILL 4 // Illegal instruction\r |
1e57a462 | 57 | #define GDB_SIGTRAP 5 // Trace Trap (Breakpoint and SingleStep)\r |
58 | #define GDB_SIGEMT 7 // Emulator Trap\r | |
59 | #define GDB_SIGFPE 8 // Floating point exception\r | |
6f711615 | 60 | #define GDB_SIGSEGV 11 // Segment violation, page fault\r |
1e57a462 | 61 | \r |
62 | \r | |
63 | //\r | |
64 | // GDB File I/O Error values, zero means no error\r | |
65 | // Includes all general GDB Unix like error values\r | |
66 | //\r | |
67 | #define GDB_EBADMEMADDRBUFSIZE 11 // the buffer that stores memory Address to be read from/written to is not the right size\r | |
3402aac7 | 68 | #define GDB_EBADMEMLENGBUFSIZE 12 // the buffer that stores Length is not the right size\r |
1e57a462 | 69 | #define GDB_EBADMEMLENGTH 13 // Length, the given number of bytes to read or write, is not the right size\r |
c6a72cd7 | 70 | #define GDB_EBADMEMDATA 14 // one of the bytes or nibbles of the memory is less than 0\r |
1e57a462 | 71 | #define GDB_EBADMEMDATASIZE 15 // the memory data, 'XX..', is too short or too long\r |
72 | #define GDB_EBADBUFSIZE 21 // the buffer created is not the correct size\r | |
73 | #define GDB_EINVALIDARG 31 // argument is invalid\r | |
74 | #define GDB_ENOSPACE 41 //\r | |
75 | #define GDB_EINVALIDBRKPOINTTYPE 51 // the breakpoint type is not recognized\r | |
76 | #define GDB_EINVALIDREGNUM 61 // given register number is not valid: either <0 or >=Number of Registers\r | |
77 | #define GDB_EUNKNOWN 255 // unknown\r | |
78 | \r | |
79 | \r | |
80 | //\r | |
81 | // These devices are open by GDB so we can just read and write to them\r | |
82 | //\r | |
83 | #define GDB_STDIN 0x00\r | |
84 | #define GDB_STDOUT 0x01\r | |
85 | #define GDB_STDERR 0x02\r | |
86 | \r | |
87 | //\r | |
88 | //Define Register size for different architectures\r | |
89 | //\r | |
3402aac7 | 90 | #if defined (MDE_CPU_IA32)\r |
1e57a462 | 91 | #define REG_SIZE 32\r |
92 | #elif defined (MDE_CPU_X64)\r | |
93 | #define REG_SIZE 64\r | |
94 | #elif defined (MDE_CPU_ARM)\r | |
95 | #define REG_SIZE 32\r | |
96 | #endif\r | |
97 | \r | |
98 | #define GDB_SERIAL_DEV_SIGNATURE SIGNATURE_32 ('g', 'd', 'b', 's')\r | |
99 | \r | |
100 | typedef struct {\r | |
101 | VENDOR_DEVICE_PATH VendorDevice;\r | |
c6a72cd7 | 102 | UINT32 Index; // Support more than one\r |
1e57a462 | 103 | EFI_DEVICE_PATH_PROTOCOL End;\r |
104 | } GDB_SERIAL_DEVICE_PATH;\r | |
105 | \r | |
106 | //\r | |
107 | // Name: SERIAL_DEV\r | |
108 | // Purpose: To provide device specific information\r | |
109 | // Fields:\r | |
110 | // Signature UINTN: The identity of the serial device\r | |
111 | // SerialIo SERIAL_IO_PROTOCOL: Serial I/O protocol interface\r | |
112 | // SerialMode SERIAL_IO_MODE:\r | |
113 | // DevicePath EFI_DEVICE_PATH_PROTOCOL *: Device path of the serial device\r | |
114 | //\r | |
115 | typedef struct {\r | |
116 | UINTN Signature;\r | |
117 | EFI_HANDLE Handle;\r | |
118 | EFI_SERIAL_IO_PROTOCOL SerialIo;\r | |
119 | EFI_SERIAL_IO_MODE SerialMode;\r | |
120 | GDB_SERIAL_DEVICE_PATH DevicePath;\r | |
121 | INTN InFileDescriptor;\r | |
122 | INTN OutFileDescriptor;\r | |
123 | } GDB_SERIAL_DEV;\r | |
124 | \r | |
125 | \r | |
126 | #define GDB_SERIAL_DEV_FROM_THIS(a) CR (a, GDB_SERIAL_DEV, SerialIo, GDB_SERIAL_DEV_SIGNATURE)\r | |
127 | \r | |
128 | \r | |
129 | typedef struct {\r | |
130 | EFI_EXCEPTION_TYPE Exception;\r | |
131 | UINT8 SignalNo;\r | |
132 | } EFI_EXCEPTION_TYPE_ENTRY;\r | |
133 | \r | |
134 | \r | |
135 | #if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)\r | |
136 | \r | |
137 | //\r | |
138 | // Byte packed structure for DR6\r | |
139 | // 32-bits on IA-32\r | |
140 | // 64-bits on X64. The upper 32-bits on X64 are reserved\r | |
141 | //\r | |
142 | typedef union {\r | |
143 | struct {\r | |
144 | UINT32 B0:1; // Breakpoint condition detected\r | |
145 | UINT32 B1:1; // Breakpoint condition detected\r | |
146 | UINT32 B2:1; // Breakpoint condition detected\r | |
147 | UINT32 B3:1; // Breakpoint condition detected\r | |
3402aac7 | 148 | UINT32 Reserved_1:9; // Reserved\r |
1e57a462 | 149 | UINT32 BD:1; // Debug register access detected\r |
150 | UINT32 BS:1; // Single step\r | |
151 | UINT32 BT:1; // Task switch\r | |
152 | UINT32 Reserved_2:16; // Reserved\r | |
153 | } Bits;\r | |
154 | UINTN UintN;\r | |
155 | } IA32_DR6;\r | |
156 | \r | |
157 | //\r | |
158 | // Byte packed structure for DR7\r | |
159 | // 32-bits on IA-32\r | |
160 | // 64-bits on X64. The upper 32-bits on X64 are reserved\r | |
161 | //\r | |
162 | typedef union {\r | |
163 | struct {\r | |
164 | UINT32 L0:1; // Local breakpoint enable\r | |
165 | UINT32 G0:1; // Global breakpoint enable\r | |
166 | UINT32 L1:1; // Local breakpoint enable\r | |
167 | UINT32 G1:1; // Global breakpoint enable\r | |
168 | UINT32 L2:1; // Local breakpoint enable\r | |
169 | UINT32 G2:1; // Global breakpoint enable\r | |
170 | UINT32 L3:1; // Local breakpoint enable\r | |
171 | UINT32 G3:1; // Global breakpoint enable\r | |
172 | UINT32 LE:1; // Local exact breakpoint enable\r | |
173 | UINT32 GE:1; // Global exact breakpoint enable\r | |
174 | UINT32 Reserved_1:3; // Reserved\r | |
175 | UINT32 GD:1; // Global detect enable\r | |
176 | UINT32 Reserved_2:2; // Reserved\r | |
177 | UINT32 RW0:2; // Read/Write field\r | |
178 | UINT32 LEN0:2; // Length field\r | |
179 | UINT32 RW1:2; // Read/Write field\r | |
180 | UINT32 LEN1:2; // Length field\r | |
181 | UINT32 RW2:2; // Read/Write field\r | |
182 | UINT32 LEN2:2; // Length field\r | |
183 | UINT32 RW3:2; // Read/Write field\r | |
184 | UINT32 LEN3:2; // Length field\r | |
185 | } Bits;\r | |
186 | UINTN UintN;\r | |
187 | } IA32_DR7;\r | |
188 | \r | |
189 | #endif /* if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64) */\r | |
190 | \r | |
191 | typedef enum {\r | |
192 | InstructionExecution, //Hardware breakpoint\r | |
193 | DataWrite, //watch\r | |
194 | DataRead, //rwatch\r | |
195 | DataReadWrite, //awatch\r | |
196 | SoftwareBreakpoint, //Software breakpoint\r | |
197 | NotSupported\r | |
198 | } BREAK_TYPE;\r | |
199 | \r | |
200 | //\r | |
201 | // Array of exception types that need to be hooked by the debugger\r | |
202 | //\r | |
203 | extern EFI_EXCEPTION_TYPE_ENTRY gExceptionType[];\r | |
204 | \r | |
205 | //\r | |
206 | // Set TRUE if F Reply package signals a ctrl-c. We can not process the Ctrl-c\r | |
3402aac7 | 207 | // here we need to wait for the periodic callback to do this.\r |
1e57a462 | 208 | //\r |
209 | extern BOOLEAN gCtrlCBreakFlag;\r | |
210 | \r | |
211 | //\r | |
212 | // If the periodic callback is called while we are processing an F packet we need\r | |
c6a72cd7 AC |
213 | // to let the callback know to not read from the serial stream as it could steal\r |
214 | // characters from the F response packet\r | |
1e57a462 | 215 | //\r |
216 | extern BOOLEAN gProcessingFPacket;\r | |
217 | \r | |
218 | \r | |
219 | // The offsets of registers SystemContext.\r | |
220 | // The fields in the array are in the gdb ordering.\r | |
221 | //\r | |
222 | extern UINTN gRegisterOffsets[];\r | |
223 | \r | |
224 | /**\r | |
225 | Return the number of entries in the gExceptionType[]\r | |
3402aac7 RC |
226 | \r |
227 | @retval UINTN, the number of entries in the gExceptionType[] array.\r | |
1e57a462 | 228 | **/\r |
229 | UINTN\r | |
230 | MaxEfiException (\r | |
231 | VOID\r | |
232 | );\r | |
233 | \r | |
234 | \r | |
235 | /**\r | |
236 | Return the number of entries in the gRegisters[]\r | |
3402aac7 RC |
237 | \r |
238 | @retval UINTN, the number of entries (registers) in the gRegisters[] array.\r | |
1e57a462 | 239 | **/\r |
240 | UINTN\r | |
241 | MaxRegisterCount (\r | |
242 | VOID\r | |
243 | );\r | |
244 | \r | |
245 | \r | |
246 | /**\r | |
3402aac7 | 247 | Check to see if the ISA is supported.\r |
1e57a462 | 248 | ISA = Instruction Set Architecture\r |
3402aac7 | 249 | \r |
1e57a462 | 250 | @retval TRUE if Isa is supported,\r |
251 | FALSE otherwise.\r | |
252 | **/\r | |
253 | BOOLEAN\r | |
254 | CheckIsa (\r | |
255 | IN EFI_INSTRUCTION_SET_ARCHITECTURE Isa\r | |
256 | );\r | |
257 | \r | |
258 | \r | |
259 | /**\r | |
260 | Send the T signal with the given exception type (in gdb order) and possibly with n:r pairs related to the watchpoints\r | |
3402aac7 | 261 | \r |
1e57a462 | 262 | @param SystemContext Register content at time of the exception\r |
263 | @param GdbExceptionType GDB exception type\r | |
264 | **/\r | |
265 | \r | |
266 | VOID\r | |
267 | GdbSendTSignal (\r | |
268 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
91c38d4e | 269 | IN UINT8 GdbExceptionType\r |
1e57a462 | 270 | );\r |
271 | \r | |
272 | \r | |
273 | /**\r | |
274 | Translates the EFI mapping to GDB mapping\r | |
3402aac7 | 275 | \r |
1e57a462 | 276 | @param EFIExceptionType EFI Exception that is being processed\r |
277 | @retval UINTN that corresponds to EFIExceptionType's GDB exception type number\r | |
278 | **/\r | |
279 | UINT8\r | |
3402aac7 | 280 | ConvertEFItoGDBtype (\r |
1e57a462 | 281 | IN EFI_EXCEPTION_TYPE EFIExceptionType\r |
282 | );\r | |
283 | \r | |
284 | \r | |
285 | /**\r | |
3402aac7 | 286 | Empties the given buffer\r |
1e57a462 | 287 | @param *Buf pointer to the first element in buffer to be emptied\r |
288 | **/\r | |
289 | VOID\r | |
3402aac7 | 290 | EmptyBuffer (\r |
1e57a462 | 291 | IN CHAR8 *Buf\r |
292 | );\r | |
293 | \r | |
294 | \r | |
295 | /**\r | |
296 | Converts an 8-bit Hex Char into a INTN.\r | |
3402aac7 | 297 | \r |
1e57a462 | 298 | @param Char - the hex character to be converted into UINTN\r |
c6a72cd7 | 299 | @retval a INTN, from 0 to 15, that corresponds to Char\r |
1e57a462 | 300 | -1 if Char is not a hex character\r |
301 | **/\r | |
302 | INTN\r | |
303 | HexCharToInt (\r | |
304 | IN CHAR8 Char\r | |
305 | );\r | |
306 | \r | |
307 | \r | |
308 | /** 'E NN'\r | |
309 | Send an error with the given error number after converting to hex.\r | |
310 | The error number is put into the buffer in hex. '255' is the biggest errno we can send.\r | |
311 | ex: 162 will be sent as A2.\r | |
3402aac7 | 312 | \r |
1e57a462 | 313 | @param errno the error number that will be sent\r |
314 | **/\r | |
315 | VOID\r | |
316 | EFIAPI\r | |
317 | SendError (\r | |
318 | IN UINT8 ErrorNum\r | |
319 | );\r | |
320 | \r | |
321 | \r | |
322 | /**\r | |
323 | Send 'OK' when the function is done executing successfully.\r | |
324 | **/\r | |
325 | VOID\r | |
7609c047 | 326 | EFIAPI\r |
1e57a462 | 327 | SendSuccess (\r |
328 | VOID\r | |
329 | );\r | |
330 | \r | |
331 | \r | |
332 | /**\r | |
333 | Send empty packet to specify that particular command/functionality is not supported.\r | |
334 | **/\r | |
335 | VOID\r | |
7609c047 | 336 | EFIAPI\r |
1e57a462 | 337 | SendNotSupported (\r |
338 | VOID\r | |
339 | );\r | |
340 | \r | |
3402aac7 RC |
341 | /** ‘p n’\r |
342 | Reads the n-th register's value into an output buffer and sends it as a packet\r | |
1e57a462 | 343 | @param SystemContext Register content at time of the exception\r |
344 | @param InBuffer This is the input buffer received from gdb server\r | |
345 | **/\r | |
346 | VOID\r | |
347 | ReadNthRegister (\r | |
348 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
349 | IN CHAR8 *InBuffer\r | |
350 | );\r | |
351 | \r | |
352 | \r | |
3402aac7 RC |
353 | /** ‘g’\r |
354 | Reads the general registers into an output buffer and sends it as a packet\r | |
1e57a462 | 355 | @param SystemContext Register content at time of the exception\r |
356 | **/\r | |
357 | VOID\r | |
7609c047 | 358 | EFIAPI\r |
3402aac7 | 359 | ReadGeneralRegisters (\r |
1e57a462 | 360 | IN EFI_SYSTEM_CONTEXT SystemContext\r |
361 | );\r | |
362 | \r | |
363 | \r | |
364 | /** ‘P n...=r...’\r | |
365 | Writes the new value of n-th register received into the input buffer to the n-th register\r | |
366 | @param SystemContext Register content at time of the exception\r | |
367 | @param InBuffer This is the input buffer received from gdb server\r | |
368 | **/\r | |
369 | VOID\r | |
7609c047 | 370 | EFIAPI\r |
1e57a462 | 371 | WriteNthRegister (\r |
372 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
373 | IN CHAR8 *InBuffer\r | |
374 | );\r | |
375 | \r | |
376 | \r | |
377 | /** ‘G XX...’\r | |
378 | Writes the new values received into the input buffer to the general registers\r | |
379 | @param SystemContext Register content at time of the exception\r | |
380 | @param InBuffer Pointer to the input buffer received from gdb server\r | |
381 | **/\r | |
382 | \r | |
383 | VOID\r | |
7609c047 | 384 | EFIAPI\r |
1e57a462 | 385 | WriteGeneralRegisters (\r |
386 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
387 | IN CHAR8 *InBuffer\r | |
388 | );\r | |
389 | \r | |
390 | \r | |
391 | /** ‘m addr,length ’\r | |
c6a72cd7 | 392 | Find the Length of the area to read and the start address. Finally, pass them to\r |
3402aac7 | 393 | another function, TransferFromMemToOutBufAndSend, that will read from that memory space and\r |
1e57a462 | 394 | send it as a packet.\r |
3402aac7 | 395 | \r |
1e57a462 | 396 | @param *PacketData Pointer to Payload data for the packet\r |
397 | **/\r | |
398 | VOID\r | |
7609c047 | 399 | EFIAPI\r |
1e57a462 | 400 | ReadFromMemory (\r |
401 | IN CHAR8 *PacketData\r | |
402 | );\r | |
403 | \r | |
404 | \r | |
405 | /** ‘M addr,length :XX...’\r | |
c6a72cd7 | 406 | Find the Length of the area in bytes to write and the start address. Finally, pass them to\r |
1e57a462 | 407 | another function, TransferFromInBufToMem, that will write to that memory space the info in\r |
408 | the input buffer.\r | |
3402aac7 | 409 | \r |
1e57a462 | 410 | @param PacketData Pointer to Payload data for the packet\r |
411 | **/\r | |
412 | VOID\r | |
7609c047 | 413 | EFIAPI\r |
1e57a462 | 414 | WriteToMemory (\r |
415 | IN CHAR8 *PacketData\r | |
416 | );\r | |
417 | \r | |
418 | \r | |
3402aac7 RC |
419 | /** ‘c [addr ]’\r |
420 | Continue. addr is Address to resume. If addr is omitted, resume at current\r | |
1e57a462 | 421 | Address.\r |
3402aac7 RC |
422 | \r |
423 | @param SystemContext Register content at time of the exception\r | |
1e57a462 | 424 | @param *PacketData Pointer to PacketData\r |
425 | **/\r | |
426 | \r | |
427 | VOID\r | |
7609c047 | 428 | EFIAPI\r |
1e57a462 | 429 | ContinueAtAddress (\r |
430 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
431 | IN CHAR8 *PacketData\r | |
432 | );\r | |
433 | \r | |
434 | \r | |
435 | /** ‘s [addr ]’\r | |
3402aac7 | 436 | Single step. addr is the Address at which to resume. If addr is omitted, resume\r |
1e57a462 | 437 | at same Address.\r |
3402aac7 | 438 | \r |
1e57a462 | 439 | @param SystemContext Register content at time of the exception\r |
440 | @param PacketData Pointer to Payload data for the packet\r | |
441 | **/\r | |
442 | VOID\r | |
7609c047 | 443 | EFIAPI\r |
1e57a462 | 444 | SingleStep (\r |
445 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
446 | IN CHAR8 *PacketData\r | |
447 | );\r | |
448 | \r | |
3402aac7 | 449 | /**\r |
1e57a462 | 450 | Insert Single Step in the SystemContext\r |
3402aac7 | 451 | \r |
1e57a462 | 452 | @param SystemContext Register content at time of the exception\r |
453 | **/\r | |
454 | VOID\r | |
455 | AddSingleStep (\r | |
456 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
457 | );\r | |
3402aac7 RC |
458 | \r |
459 | /**\r | |
1e57a462 | 460 | Remove Single Step in the SystemContext\r |
3402aac7 | 461 | \r |
1e57a462 | 462 | @param SystemContext Register content at time of the exception\r |
463 | **/\r | |
464 | VOID\r | |
465 | RemoveSingleStep (\r | |
466 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
467 | );\r | |
3402aac7 RC |
468 | \r |
469 | \r | |
1e57a462 | 470 | /**\r |
471 | ‘Z1, [addr], [length]’\r | |
472 | ‘Z2, [addr], [length]’\r | |
473 | ‘Z3, [addr], [length]’\r | |
474 | ‘Z4, [addr], [length]’\r | |
475 | \r | |
476 | Insert hardware breakpoint/watchpoint at address addr of size length\r | |
477 | \r | |
478 | @param SystemContext Register content at time of the exception\r | |
479 | @param *PacketData Pointer to the Payload data for the packet\r | |
480 | \r | |
481 | **/\r | |
482 | VOID\r | |
483 | EFIAPI\r | |
484 | InsertBreakPoint(\r | |
485 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
486 | IN CHAR8 *PacketData\r | |
487 | );\r | |
488 | \r | |
489 | \r | |
490 | /**\r | |
491 | ‘z1, [addr], [length]’\r | |
492 | ‘z2, [addr], [length]’\r | |
493 | ‘z3, [addr], [length]’\r | |
494 | ‘z4, [addr], [length]’\r | |
495 | \r | |
496 | Remove hardware breakpoint/watchpoint at address addr of size length\r | |
497 | \r | |
498 | @param SystemContext Register content at time of the exception\r | |
499 | @param *PacketData Pointer to the Payload data for the packet\r | |
500 | \r | |
501 | **/\r | |
502 | VOID\r | |
503 | EFIAPI\r | |
504 | RemoveBreakPoint(\r | |
505 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
506 | IN CHAR8 *PacketData\r | |
507 | );\r | |
508 | \r | |
509 | \r | |
510 | /**\r | |
c6a72cd7 | 511 | Exception Handler for GDB. It will be called for all exceptions\r |
1e57a462 | 512 | registered via the gExceptionType[] array.\r |
3402aac7 | 513 | \r |
1e57a462 | 514 | @param ExceptionType Exception that is being processed\r |
3402aac7 RC |
515 | @param SystemContext Register content at time of the exception\r |
516 | \r | |
1e57a462 | 517 | **/\r |
518 | VOID\r | |
519 | EFIAPI\r | |
3402aac7 RC |
520 | GdbExceptionHandler (\r |
521 | IN EFI_EXCEPTION_TYPE ExceptionType,\r | |
522 | IN OUT EFI_SYSTEM_CONTEXT SystemContext\r | |
1e57a462 | 523 | );\r |
524 | \r | |
525 | \r | |
526 | /**\r | |
3402aac7 | 527 | Periodic callback for GDB. This function is used to catch a ctrl-c or other\r |
1e57a462 | 528 | break in type command from GDB.\r |
3402aac7 | 529 | \r |
1e57a462 | 530 | @param SystemContext Register content at time of the call\r |
3402aac7 | 531 | \r |
1e57a462 | 532 | **/\r |
533 | VOID\r | |
534 | EFIAPI\r | |
3402aac7 RC |
535 | GdbPeriodicCallBack (\r |
536 | IN OUT EFI_SYSTEM_CONTEXT SystemContext\r | |
1e57a462 | 537 | );\r |
538 | \r | |
539 | \r | |
540 | /**\r | |
c6a72cd7 | 541 | Make two serial consoles: 1) StdIn and StdOut via GDB. 2) StdErr via GDB.\r |
3402aac7 | 542 | \r |
1e57a462 | 543 | These console show up on the remote system running GDB\r |
544 | \r | |
545 | **/\r | |
546 | \r | |
547 | VOID\r | |
548 | GdbInitializeSerialConsole (\r | |
549 | VOID\r | |
550 | );\r | |
551 | \r | |
552 | \r | |
553 | /**\r | |
554 | Send a GDB Remote Serial Protocol Packet\r | |
3402aac7 RC |
555 | \r |
556 | $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',\r | |
c6a72cd7 | 557 | the packet terminating character '#' and the two digit checksum.\r |
3402aac7 RC |
558 | \r |
559 | If an ack '+' is not sent resend the packet, but timeout eventually so we don't end up\r | |
c6a72cd7 | 560 | in an infinite loop. This is so if you unplug the debugger code just keeps running\r |
1e57a462 | 561 | \r |
3402aac7 RC |
562 | @param PacketData Payload data for the packet\r |
563 | \r | |
1e57a462 | 564 | @retval Number of bytes of packet data sent.\r |
565 | \r | |
566 | **/\r | |
567 | UINTN\r | |
568 | SendPacket (\r | |
569 | IN CHAR8 *PacketData\r | |
570 | );\r | |
3402aac7 | 571 | \r |
1e57a462 | 572 | \r |
573 | /**\r | |
574 | Receive a GDB Remote Serial Protocol Packet\r | |
3402aac7 RC |
575 | \r |
576 | $PacketData#checksum PacketData is passed in and this function adds the packet prefix '$',\r | |
c6a72cd7 | 577 | the packet terminating character '#' and the two digit checksum.\r |
3402aac7 | 578 | \r |
4f0624e8 | 579 | If host re-starts sending a packet without ending the previous packet, only the last valid packet is processed.\r |
1e57a462 | 580 | (In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)\r |
3402aac7 | 581 | \r |
1e57a462 | 582 | If an ack '+' is not sent resend the packet\r |
3402aac7 RC |
583 | \r |
584 | @param PacketData Payload data for the packet\r | |
585 | \r | |
1e57a462 | 586 | @retval Number of bytes of packet data received.\r |
587 | \r | |
588 | **/\r | |
589 | UINTN\r | |
590 | ReceivePacket (\r | |
591 | OUT CHAR8 *PacketData,\r | |
592 | IN UINTN PacketDataSize\r | |
593 | );\r | |
3402aac7 | 594 | \r |
1e57a462 | 595 | \r |
596 | /**\r | |
3402aac7 | 597 | Read data from a FileDescriptor. On success number of bytes read is returned. Zero indicates\r |
1e57a462 | 598 | the end of a file. On error -1 is returned. If count is zero, GdbRead returns zero.\r |
599 | \r | |
600 | @param FileDescriptor Device to talk to.\r | |
601 | @param Buffer Buffer to hold Count bytes that were read\r | |
3402aac7 | 602 | @param Count Number of bytes to transfer.\r |
1e57a462 | 603 | \r |
604 | @retval -1 Error\r | |
605 | @retval {other} Number of bytes read.\r | |
606 | \r | |
607 | **/\r | |
608 | INTN\r | |
609 | GdbRead (\r | |
610 | IN INTN FileDescriptor,\r | |
611 | OUT VOID *Buffer,\r | |
612 | IN UINTN Count\r | |
613 | );\r | |
3402aac7 | 614 | \r |
1e57a462 | 615 | \r |
616 | /**\r | |
3402aac7 RC |
617 | Write data to a FileDescriptor. On success number of bytes written is returned. Zero indicates\r |
618 | nothing was written. On error -1 is returned.\r | |
1e57a462 | 619 | \r |
620 | @param FileDescriptor Device to talk to.\r | |
621 | @param Buffer Buffer to hold Count bytes that are to be written\r | |
3402aac7 | 622 | @param Count Number of bytes to transfer.\r |
1e57a462 | 623 | \r |
624 | @retval -1 Error\r | |
625 | @retval {other} Number of bytes written.\r | |
626 | \r | |
627 | **/\r | |
628 | INTN\r | |
629 | GdbWrite (\r | |
630 | IN INTN FileDescriptor,\r | |
631 | OUT CONST VOID *Buffer,\r | |
632 | IN UINTN Count\r | |
633 | );\r | |
634 | \r | |
3402aac7 | 635 | UINTN *\r |
1e57a462 | 636 | FindPointerToRegister (\r |
637 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
3402aac7 | 638 | IN UINTN RegNumber\r |
1e57a462 | 639 | );\r |
640 | \r | |
3402aac7 | 641 | CHAR8 *\r |
1e57a462 | 642 | BasicReadRegister (\r |
643 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
644 | IN UINTN RegNumber,\r | |
645 | IN CHAR8 *OutBufPtr\r | |
646 | );\r | |
647 | \r | |
648 | VOID\r | |
649 | TransferFromInBufToMem (\r | |
650 | IN UINTN Length,\r | |
651 | IN UINT8 *Address,\r | |
652 | IN CHAR8 *NewData\r | |
653 | );\r | |
654 | \r | |
655 | VOID\r | |
656 | TransferFromMemToOutBufAndSend (\r | |
657 | IN UINTN Length,\r | |
658 | IN UINT8 *Address\r | |
659 | );\r | |
660 | \r | |
661 | CHAR8 *\r | |
662 | BasicWriteRegister (\r | |
663 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
664 | IN UINTN RegNumber,\r | |
665 | IN CHAR8 *InBufPtr\r | |
666 | );\r | |
667 | \r | |
3402aac7 | 668 | VOID\r |
1e57a462 | 669 | PrintReg (\r |
670 | EFI_SYSTEM_CONTEXT SystemContext\r | |
671 | );\r | |
672 | \r | |
673 | UINTN\r | |
674 | ParseBreakpointPacket (\r | |
675 | IN CHAR8 *PacketData,\r | |
676 | OUT UINTN *Type,\r | |
677 | OUT UINTN *Address,\r | |
678 | OUT UINTN *Length\r | |
679 | );\r | |
680 | \r | |
681 | UINTN\r | |
682 | GetBreakpointDataAddress (\r | |
683 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
3402aac7 | 684 | IN UINTN BreakpointNumber\r |
1e57a462 | 685 | );\r |
686 | \r | |
687 | UINTN\r | |
688 | GetBreakpointDetected (\r | |
689 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
690 | );\r | |
691 | \r | |
692 | BREAK_TYPE\r | |
693 | GetBreakpointType (\r | |
694 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
3402aac7 | 695 | IN UINTN BreakpointNumber\r |
1e57a462 | 696 | );\r |
697 | \r | |
698 | UINTN\r | |
699 | ConvertLengthData (\r | |
700 | IN UINTN Length\r | |
701 | );\r | |
702 | \r | |
703 | EFI_STATUS\r | |
704 | FindNextFreeDebugRegister (\r | |
705 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
706 | OUT UINTN *Register\r | |
707 | );\r | |
708 | \r | |
709 | EFI_STATUS\r | |
710 | EnableDebugRegister (\r | |
711 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
712 | IN UINTN Register,\r | |
713 | IN UINTN Address,\r | |
714 | IN UINTN Length,\r | |
715 | IN UINTN Type\r | |
716 | );\r | |
717 | \r | |
718 | EFI_STATUS\r | |
719 | FindMatchingDebugRegister (\r | |
720 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
721 | IN UINTN Address,\r | |
722 | IN UINTN Length,\r | |
723 | IN UINTN Type,\r | |
724 | OUT UINTN *Register\r | |
725 | );\r | |
726 | \r | |
727 | EFI_STATUS\r | |
728 | DisableDebugRegister (\r | |
729 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
730 | IN UINTN Register\r | |
731 | );\r | |
732 | \r | |
733 | VOID\r | |
734 | InitializeProcessor (\r | |
735 | VOID\r | |
736 | );\r | |
737 | \r | |
738 | BOOLEAN\r | |
739 | ValidateAddress (\r | |
740 | IN VOID *Address\r | |
741 | );\r | |
742 | \r | |
743 | BOOLEAN\r | |
744 | ValidateException (\r | |
3402aac7 RC |
745 | IN EFI_EXCEPTION_TYPE ExceptionType,\r |
746 | IN OUT EFI_SYSTEM_CONTEXT SystemContext\r | |
1e57a462 | 747 | );\r |
748 | \r | |
749 | #endif\r |