--- /dev/null
+/** @file\r
+\r
+ Copyright (c) 2008-2009, Apple Inc. All rights reserved.\r
+ \r
+ All rights reserved. This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+/** @file\r
+ UEFI Debug Library that uses PrintLib to send messages to STDERR.\r
+\r
+ Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
+ All rights reserved. This program and the accompanying materials \r
+ are licensed and made available under the terms and conditions of the BSD License \r
+ which accompanies this distribution. The full text of the license may be found at \r
+ http://opensource.org/licenses/bsd-license.php \r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
+\r
+**/\r
+\r
+\r
+#include <Uefi.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/PrintLib.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/BaseLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/SemihostLib.h>\r
+\r
+//\r
+// Define the maximum debug and assert message length that this library supports \r
+//\r
+#define MAX_DEBUG_MESSAGE_LENGTH 0x100\r
+\r
+/**\r
+\r
+ Prints a debug message to the debug output device if the specified error level is enabled.\r
+\r
+ If any bit in ErrorLevel is also set in PcdDebugPrintErrorLevel, then print \r
+ the message specified by Format and the associated variable argument list to \r
+ the debug output device.\r
+\r
+ If Format is NULL, then ASSERT().\r
+\r
+ @param ErrorLevel The error level of the debug message.\r
+ @param Format Format string for the debug message to print.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+DebugPrint (\r
+ IN UINTN ErrorLevel,\r
+ IN CONST CHAR8 *Format,\r
+ ...\r
+ )\r
+{\r
+ CHAR8 AsciiBuffer[MAX_DEBUG_MESSAGE_LENGTH];\r
+ VA_LIST Marker;\r
+\r
+ //\r
+ // If Format is NULL, then ASSERT().\r
+ //\r
+ ASSERT (Format != NULL);\r
+\r
+ //\r
+ // Check driver debug mask value and global mask\r
+ //\r
+ if ((ErrorLevel & PcdGet32(PcdDebugPrintErrorLevel)) == 0) {\r
+ return;\r
+ }\r
+\r
+ //\r
+ // Convert the DEBUG() message to a Unicode String\r
+ //\r
+ VA_START (Marker, Format);\r
+ AsciiVSPrint (AsciiBuffer, sizeof (AsciiBuffer), Format, Marker);\r
+ VA_END (Marker);\r
+\r
+ SemihostWriteString (AsciiBuffer);\r
+}\r
+\r
+\r
+/**\r
+\r
+ Prints an assert message containing a filename, line number, and description. \r
+ This may be followed by a breakpoint or a dead loop.\r
+\r
+ Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n" \r
+ to the debug output device. If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of \r
+ PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if \r
+ DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then \r
+ CpuDeadLoop() is called. If neither of these bits are set, then this function \r
+ returns immediately after the message is printed to the debug output device.\r
+ DebugAssert() must actively prevent recusrsion. If DebugAssert() is called while\r
+ processing another DebugAssert(), then DebugAssert() must return immediately.\r
+\r
+ If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.\r
+\r
+ If Description is NULL, then a <Description> string of "(NULL) Description" is printed.\r
+\r
+ @param FileName Pointer to the name of the source file that generated the assert condition.\r
+ @param LineNumber The line number in the source file that generated the assert condition\r
+ @param Description Pointer to the description of the assert condition.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+DebugAssert (\r
+ IN CONST CHAR8 *FileName,\r
+ IN UINTN LineNumber,\r
+ IN CONST CHAR8 *Description\r
+ )\r
+{\r
+ CHAR8 AsciiBuffer[MAX_DEBUG_MESSAGE_LENGTH];\r
+\r
+ //\r
+ // Generate the ASSERT() message in Unicode format\r
+ //\r
+ AsciiSPrint (AsciiBuffer, sizeof (AsciiBuffer), "ASSERT %a(%d): %a\n", FileName, LineNumber, Description);\r
+\r
+ SemihostWriteString (AsciiBuffer);\r
+\r
+ //\r
+ // Generate a Breakpoint, DeadLoop, or NOP based on PCD settings\r
+ //\r
+ if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {\r
+ CpuBreakpoint ();\r
+ } else if ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {\r
+ CpuDeadLoop ();\r
+ }\r
+}\r
+\r
+\r
+/**\r
+\r
+ Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.\r
+\r
+ This function fills Length bytes of Buffer with the value specified by \r
+ PcdDebugClearMemoryValue, and returns Buffer.\r
+\r
+ If Buffer is NULL, then ASSERT().\r
+\r
+ If Length is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r
+\r
+ @param Buffer Pointer to the target buffer to fill with PcdDebugClearMemoryValue.\r
+ @param Length Number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue. \r
+\r
+ @return Buffer\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+DebugClearMemory (\r
+ OUT VOID *Buffer,\r
+ IN UINTN Length\r
+ )\r
+{\r
+ //\r
+ // If Buffer is NULL, then ASSERT().\r
+ //\r
+ ASSERT (Buffer != NULL);\r
+\r
+ //\r
+ // SetMem() checks for the the ASSERT() condition on Length and returns Buffer\r
+ //\r
+ return SetMem (Buffer, Length, PcdGet8(PcdDebugClearMemoryValue));\r
+}\r
+\r
+\r
+/**\r
+ \r
+ Returns TRUE if ASSERT() macros are enabled.\r
+\r
+ This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of \r
+ PcdDebugProperyMask is set. Otherwise FALSE is returned.\r
+\r
+ @retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.\r
+ @retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+DebugAssertEnabled (\r
+ VOID\r
+ )\r
+{\r
+ return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);\r
+}\r
+\r
+\r
+/**\r
+ \r
+ Returns TRUE if DEBUG()macros are enabled.\r
+\r
+ This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of \r
+ PcdDebugProperyMask is set. Otherwise FALSE is returned.\r
+\r
+ @retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.\r
+ @retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+DebugPrintEnabled (\r
+ VOID\r
+ )\r
+{\r
+ return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);\r
+}\r
+\r
+\r
+/**\r
+ \r
+ Returns TRUE if DEBUG_CODE()macros are enabled.\r
+\r
+ This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of \r
+ PcdDebugProperyMask is set. Otherwise FALSE is returned.\r
+\r
+ @retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.\r
+ @retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+DebugCodeEnabled (\r
+ VOID\r
+ )\r
+{\r
+ return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);\r
+}\r
+\r
+\r
+/**\r
+ \r
+ Returns TRUE if DEBUG_CLEAR_MEMORY()macro is enabled.\r
+\r
+ This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CLEAR_MEMORY_ENABLED bit of \r
+ PcdDebugProperyMask is set. Otherwise FALSE is returned.\r
+\r
+ @retval TRUE The DEBUG_PROPERTY_DEBUG_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.\r
+ @retval FALSE The DEBUG_PROPERTY_DEBUG_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+DebugClearMemoryEnabled (\r
+ VOID\r
+ )\r
+{\r
+ return (BOOLEAN) ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);\r
+}\r
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