| | 1 | /** @file\r |
| | 2 | UEFI Debug Lib that sends messages to the Standard Error Device in the EFI System Table.\r |
| | 3 | \r |
| | 4 | Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r |
| | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| | 6 | \r |
| | 7 | **/\r |
| | 8 | \r |
| | 9 | \r |
| | 10 | #include <Uefi.h>\r |
| | 11 | \r |
| | 12 | #include <Library/DebugLib.h>\r |
| | 13 | #include <Library/PrintLib.h>\r |
| | 14 | #include <Library/PcdLib.h>\r |
| | 15 | #include <Library/BaseLib.h>\r |
| | 16 | #include <Library/BaseMemoryLib.h>\r |
| | 17 | #include <Library/DebugPrintErrorLevelLib.h>\r |
| | 18 | \r |
| | 19 | //\r |
| | 20 | // Define the maximum debug and assert message length that this library supports\r |
| | 21 | //\r |
| | 22 | #define MAX_DEBUG_MESSAGE_LENGTH 0x100\r |
| | 23 | \r |
| | 24 | \r |
| | 25 | //\r |
| | 26 | // VA_LIST can not initialize to NULL for all compiler, so we use this to\r |
| | 27 | // indicate a null VA_LIST\r |
| | 28 | //\r |
| | 29 | VA_LIST mVaListNull;\r |
| | 30 | \r |
| | 31 | extern BOOLEAN mPostEBS;\r |
| | 32 | extern EFI_SYSTEM_TABLE *mDebugST;\r |
| | 33 | \r |
| | 34 | /**\r |
| | 35 | Prints a debug message to the debug output device if the specified error level is enabled.\r |
| | 36 | \r |
| | 37 | If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r |
| | 38 | GetDebugPrintErrorLevel (), then print the message specified by Format and the\r |
| | 39 | associated variable argument list to the debug output device.\r |
| | 40 | \r |
| | 41 | If Format is NULL, then ASSERT().\r |
| | 42 | \r |
| | 43 | @param ErrorLevel The error level of the debug message.\r |
| | 44 | @param Format The format string for the debug message to print.\r |
| | 45 | @param ... The variable argument list whose contents are accessed\r |
| | 46 | based on the format string specified by Format.\r |
| | 47 | \r |
| | 48 | **/\r |
| | 49 | VOID\r |
| | 50 | EFIAPI\r |
| | 51 | DebugPrint (\r |
| | 52 | IN UINTN ErrorLevel,\r |
| | 53 | IN CONST CHAR8 *Format,\r |
| | 54 | ...\r |
| | 55 | )\r |
| | 56 | {\r |
| | 57 | VA_LIST Marker;\r |
| | 58 | \r |
| | 59 | VA_START (Marker, Format);\r |
| | 60 | DebugVPrint (ErrorLevel, Format, Marker);\r |
| | 61 | VA_END (Marker);\r |
| | 62 | }\r |
| | 63 | \r |
| | 64 | \r |
| | 65 | /**\r |
| | 66 | Prints a debug message to the debug output device if the specified\r |
| | 67 | error level is enabled base on Null-terminated format string and a\r |
| | 68 | VA_LIST argument list or a BASE_LIST argument list.\r |
| | 69 | \r |
| | 70 | If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r |
| | 71 | GetDebugPrintErrorLevel (), then print the message specified by Format and\r |
| | 72 | the associated variable argument list to the debug output device.\r |
| | 73 | \r |
| | 74 | If Format is NULL, then ASSERT().\r |
| | 75 | \r |
| | 76 | @param ErrorLevel The error level of the debug message.\r |
| | 77 | @param Format Format string for the debug message to print.\r |
| | 78 | @param VaListMarker VA_LIST marker for the variable argument list.\r |
| | 79 | @param BaseListMarker BASE_LIST marker for the variable argument list.\r |
| | 80 | \r |
| | 81 | **/\r |
| | 82 | VOID\r |
| | 83 | DebugPrintMarker (\r |
| | 84 | IN UINTN ErrorLevel,\r |
| | 85 | IN CONST CHAR8 *Format,\r |
| | 86 | IN VA_LIST VaListMarker,\r |
| | 87 | IN BASE_LIST BaseListMarker\r |
| | 88 | )\r |
| | 89 | {\r |
| | 90 | CHAR16 Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r |
| | 91 | \r |
| | 92 | if (!mPostEBS) {\r |
| | 93 | //\r |
| | 94 | // If Format is NULL, then ASSERT().\r |
| | 95 | //\r |
| | 96 | ASSERT (Format != NULL);\r |
| | 97 | \r |
| | 98 | //\r |
| | 99 | // Check driver debug mask value and global mask\r |
| | 100 | //\r |
| | 101 | if ((ErrorLevel & GetDebugPrintErrorLevel ()) == 0) {\r |
| | 102 | return;\r |
| | 103 | }\r |
| | 104 | \r |
| | 105 | //\r |
| | 106 | // Convert the DEBUG() message to a Unicode String\r |
| | 107 | //\r |
| | 108 | if (BaseListMarker == NULL) {\r |
| | 109 | UnicodeVSPrintAsciiFormat (Buffer, sizeof (Buffer), Format, VaListMarker);\r |
| | 110 | } else {\r |
| | 111 | UnicodeBSPrintAsciiFormat (Buffer, sizeof (Buffer), Format, BaseListMarker);\r |
| | 112 | }\r |
| | 113 | \r |
| | 114 | //\r |
| | 115 | // Send the print string to the Standard Error device\r |
| | 116 | //\r |
| | 117 | if ((mDebugST != NULL) && (mDebugST->StdErr != NULL)) {\r |
| | 118 | mDebugST->StdErr->OutputString (mDebugST->StdErr, Buffer);\r |
| | 119 | }\r |
| | 120 | }\r |
| | 121 | }\r |
| | 122 | \r |
| | 123 | \r |
| | 124 | /**\r |
| | 125 | Prints a debug message to the debug output device if the specified\r |
| | 126 | error level is enabled.\r |
| | 127 | \r |
| | 128 | If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r |
| | 129 | GetDebugPrintErrorLevel (), then print the message specified by Format and\r |
| | 130 | the associated variable argument list to the debug output device.\r |
| | 131 | \r |
| | 132 | If Format is NULL, then ASSERT().\r |
| | 133 | \r |
| | 134 | @param ErrorLevel The error level of the debug message.\r |
| | 135 | @param Format Format string for the debug message to print.\r |
| | 136 | @param VaListMarker VA_LIST marker for the variable argument list.\r |
| | 137 | \r |
| | 138 | **/\r |
| | 139 | VOID\r |
| | 140 | EFIAPI\r |
| | 141 | DebugVPrint (\r |
| | 142 | IN UINTN ErrorLevel,\r |
| | 143 | IN CONST CHAR8 *Format,\r |
| | 144 | IN VA_LIST VaListMarker\r |
| | 145 | )\r |
| | 146 | {\r |
| | 147 | DebugPrintMarker (ErrorLevel, Format, VaListMarker, NULL);\r |
| | 148 | }\r |
| | 149 | \r |
| | 150 | \r |
| | 151 | /**\r |
| | 152 | Prints a debug message to the debug output device if the specified\r |
| | 153 | error level is enabled.\r |
| | 154 | This function use BASE_LIST which would provide a more compatible\r |
| | 155 | service than VA_LIST.\r |
| | 156 | \r |
| | 157 | If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function\r |
| | 158 | GetDebugPrintErrorLevel (), then print the message specified by Format and\r |
| | 159 | the associated variable argument list to the debug output device.\r |
| | 160 | \r |
| | 161 | If Format is NULL, then ASSERT().\r |
| | 162 | \r |
| | 163 | @param ErrorLevel The error level of the debug message.\r |
| | 164 | @param Format Format string for the debug message to print.\r |
| | 165 | @param BaseListMarker BASE_LIST marker for the variable argument list.\r |
| | 166 | \r |
| | 167 | **/\r |
| | 168 | VOID\r |
| | 169 | EFIAPI\r |
| | 170 | DebugBPrint (\r |
| | 171 | IN UINTN ErrorLevel,\r |
| | 172 | IN CONST CHAR8 *Format,\r |
| | 173 | IN BASE_LIST BaseListMarker\r |
| | 174 | )\r |
| | 175 | {\r |
| | 176 | DebugPrintMarker (ErrorLevel, Format, mVaListNull, BaseListMarker);\r |
| | 177 | }\r |
| | 178 | \r |
| | 179 | \r |
| | 180 | /**\r |
| | 181 | Prints an assert message containing a filename, line number, and description.\r |
| | 182 | This may be followed by a breakpoint or a dead loop.\r |
| | 183 | \r |
| | 184 | Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n"\r |
| | 185 | to the debug output device. If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of\r |
| | 186 | PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if\r |
| | 187 | DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then\r |
| | 188 | CpuDeadLoop() is called. If neither of these bits are set, then this function\r |
| | 189 | returns immediately after the message is printed to the debug output device.\r |
| | 190 | DebugAssert() must actively prevent recursion. If DebugAssert() is called while\r |
| | 191 | processing another DebugAssert(), then DebugAssert() must return immediately.\r |
| | 192 | \r |
| | 193 | If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.\r |
| | 194 | If Description is NULL, then a <Description> string of "(NULL) Description" is printed.\r |
| | 195 | \r |
| | 196 | @param FileName The pointer to the name of the source file that generated\r |
| | 197 | the assert condition.\r |
| | 198 | @param LineNumber The line number in the source file that generated the\r |
| | 199 | assert condition\r |
| | 200 | @param Description The pointer to the description of the assert condition.\r |
| | 201 | \r |
| | 202 | **/\r |
| | 203 | VOID\r |
| | 204 | EFIAPI\r |
| | 205 | DebugAssert (\r |
| | 206 | IN CONST CHAR8 *FileName,\r |
| | 207 | IN UINTN LineNumber,\r |
| | 208 | IN CONST CHAR8 *Description\r |
| | 209 | )\r |
| | 210 | {\r |
| | 211 | CHAR16 Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r |
| | 212 | \r |
| | 213 | if (!mPostEBS) {\r |
| | 214 | //\r |
| | 215 | // Generate the ASSERT() message in Unicode format\r |
| | 216 | //\r |
| | 217 | UnicodeSPrintAsciiFormat (\r |
| | 218 | Buffer,\r |
| | 219 | sizeof (Buffer),\r |
| | 220 | "ASSERT [%a] %a(%d): %a\n",\r |
| | 221 | gEfiCallerBaseName,\r |
| | 222 | FileName,\r |
| | 223 | LineNumber,\r |
| | 224 | Description\r |
| | 225 | );\r |
| | 226 | \r |
| | 227 | //\r |
| | 228 | // Send the print string to the Standard Error device\r |
| | 229 | //\r |
| | 230 | if ((mDebugST != NULL) && (mDebugST->StdErr != NULL)) {\r |
| | 231 | mDebugST->StdErr->OutputString (mDebugST->StdErr, Buffer);\r |
| | 232 | }\r |
| | 233 | \r |
| | 234 | //\r |
| | 235 | // Generate a Breakpoint, DeadLoop, or NOP based on PCD settings\r |
| | 236 | //\r |
| | 237 | if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {\r |
| | 238 | CpuBreakpoint ();\r |
| | 239 | } else if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {\r |
| | 240 | CpuDeadLoop ();\r |
| | 241 | }\r |
| | 242 | }\r |
| | 243 | }\r |
| | 244 | \r |
| | 245 | \r |
| | 246 | /**\r |
| | 247 | Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.\r |
| | 248 | \r |
| | 249 | This function fills Length bytes of Buffer with the value specified by\r |
| | 250 | PcdDebugClearMemoryValue, and returns Buffer.\r |
| | 251 | \r |
| | 252 | If Buffer is NULL, then ASSERT().\r |
| | 253 | If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
| | 254 | \r |
| | 255 | @param Buffer The pointer to the target buffer to be filled with PcdDebugClearMemoryValue.\r |
| | 256 | @param Length The number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.\r |
| | 257 | \r |
| | 258 | @return Buffer The pointer to the target buffer filled with PcdDebugClearMemoryValue.\r |
| | 259 | \r |
| | 260 | **/\r |
| | 261 | VOID *\r |
| | 262 | EFIAPI\r |
| | 263 | DebugClearMemory (\r |
| | 264 | OUT VOID *Buffer,\r |
| | 265 | IN UINTN Length\r |
| | 266 | )\r |
| | 267 | {\r |
| | 268 | //\r |
| | 269 | // If Buffer is NULL, then ASSERT().\r |
| | 270 | //\r |
| | 271 | ASSERT (Buffer != NULL);\r |
| | 272 | \r |
| | 273 | //\r |
| | 274 | // SetMem() checks for the the ASSERT() condition on Length and returns Buffer\r |
| | 275 | //\r |
| | 276 | return SetMem (Buffer, Length, PcdGet8(PcdDebugClearMemoryValue));\r |
| | 277 | }\r |
| | 278 | \r |
| | 279 | \r |
| | 280 | /**\r |
| | 281 | Returns TRUE if ASSERT() macros are enabled.\r |
| | 282 | \r |
| | 283 | This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of\r |
| | 284 | PcdDebugProperyMask is set. Otherwise FALSE is returned.\r |
| | 285 | \r |
| | 286 | @retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.\r |
| | 287 | @retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.\r |
| | 288 | \r |
| | 289 | **/\r |
| | 290 | BOOLEAN\r |
| | 291 | EFIAPI\r |
| | 292 | DebugAssertEnabled (\r |
| | 293 | VOID\r |
| | 294 | )\r |
| | 295 | {\r |
| | 296 | return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);\r |
| | 297 | }\r |
| | 298 | \r |
| | 299 | \r |
| | 300 | /**\r |
| | 301 | Returns TRUE if DEBUG() macros are enabled.\r |
| | 302 | \r |
| | 303 | This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of\r |
| | 304 | PcdDebugProperyMask is set. Otherwise FALSE is returned.\r |
| | 305 | \r |
| | 306 | @retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.\r |
| | 307 | @retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.\r |
| | 308 | \r |
| | 309 | **/\r |
| | 310 | BOOLEAN\r |
| | 311 | EFIAPI\r |
| | 312 | DebugPrintEnabled (\r |
| | 313 | VOID\r |
| | 314 | )\r |
| | 315 | {\r |
| | 316 | return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);\r |
| | 317 | }\r |
| | 318 | \r |
| | 319 | \r |
| | 320 | /**\r |
| | 321 | Returns TRUE if DEBUG_CODE() macros are enabled.\r |
| | 322 | \r |
| | 323 | This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of\r |
| | 324 | PcdDebugProperyMask is set. Otherwise FALSE is returned.\r |
| | 325 | \r |
| | 326 | @retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.\r |
| | 327 | @retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.\r |
| | 328 | \r |
| | 329 | **/\r |
| | 330 | BOOLEAN\r |
| | 331 | EFIAPI\r |
| | 332 | DebugCodeEnabled (\r |
| | 333 | VOID\r |
| | 334 | )\r |
| | 335 | {\r |
| | 336 | return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);\r |
| | 337 | }\r |
| | 338 | \r |
| | 339 | \r |
| | 340 | /**\r |
| | 341 | Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.\r |
| | 342 | \r |
| | 343 | This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of\r |
| | 344 | PcdDebugProperyMask is set. Otherwise FALSE is returned.\r |
| | 345 | \r |
| | 346 | @retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.\r |
| | 347 | @retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.\r |
| | 348 | \r |
| | 349 | **/\r |
| | 350 | BOOLEAN\r |
| | 351 | EFIAPI\r |
| | 352 | DebugClearMemoryEnabled (\r |
| | 353 | VOID\r |
| | 354 | )\r |
| | 355 | {\r |
| | 356 | return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);\r |
| | 357 | }\r |
| | 358 | \r |
| | 359 | /**\r |
| | 360 | Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.\r |
| | 361 | \r |
| | 362 | This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.\r |
| | 363 | \r |
| | 364 | @retval TRUE Current ErrorLevel is supported.\r |
| | 365 | @retval FALSE Current ErrorLevel is not supported.\r |
| | 366 | \r |
| | 367 | **/\r |
| | 368 | BOOLEAN\r |
| | 369 | EFIAPI\r |
| | 370 | DebugPrintLevelEnabled (\r |
| | 371 | IN CONST UINTN ErrorLevel\r |
| | 372 | )\r |
| | 373 | {\r |
| | 374 | return (BOOLEAN) ((ErrorLevel & PcdGet32(PcdFixedDebugPrintErrorLevel)) != 0);\r |
| | 375 | }\r |
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