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- /** @file
- Instance of Debug Library based on POSIX APIs
- Uses Print Library to produce formatted output strings sent to printf().
- Copyright (c) 2018 - 2020, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include <stdio.h>
- #include <Base.h>
- #include <Library/DebugLib.h>
- #include <Library/BaseLib.h>
- #include <Library/PrintLib.h>
- #include <Library/BaseMemoryLib.h>
- ///
- /// Define the maximum debug and assert message length that this library supports
- ///
- #define MAX_DEBUG_MESSAGE_LENGTH 0x100
- /**
- Prints a debug message to the debug output device if the specified error level is enabled.
- If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
- GetDebugPrintErrorLevel (), then print the message specified by Format and the
- associated variable argument list to the debug output device.
- If Format is NULL, then ASSERT().
- @param ErrorLevel The error level of the debug message.
- @param Format The format string for the debug message to print.
- @param ... The variable argument list whose contents are accessed
- based on the format string specified by Format.
- **/
- VOID
- EFIAPI
- DebugPrint (
- IN UINTN ErrorLevel,
- IN CONST CHAR8 *Format,
- ...
- )
- {
- VA_LIST Marker;
- VA_START (Marker, Format);
- DebugVPrint (ErrorLevel, Format, Marker);
- VA_END (Marker);
- }
- /**
- Prints a debug message to the debug output device if the specified
- error level is enabled.
- If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
- GetDebugPrintErrorLevel (), then print the message specified by Format and
- the associated variable argument list to the debug output device.
- If Format is NULL, then ASSERT().
- @param ErrorLevel The error level of the debug message.
- @param Format Format string for the debug message to print.
- @param VaListMarker VA_LIST marker for the variable argument list.
- **/
- VOID
- EFIAPI
- DebugVPrint (
- IN UINTN ErrorLevel,
- IN CONST CHAR8 *Format,
- IN VA_LIST VaListMarker
- )
- {
- CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
- AsciiVSPrint (Buffer, sizeof (Buffer), Format, VaListMarker);
- printf ("%s", Buffer);
- }
- /**
- Prints a debug message to the debug output device if the specified
- error level is enabled.
- This function use BASE_LIST which would provide a more compatible
- service than VA_LIST.
- If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function
- GetDebugPrintErrorLevel (), then print the message specified by Format and
- the associated variable argument list to the debug output device.
- If Format is NULL, then ASSERT().
- @param ErrorLevel The error level of the debug message.
- @param Format Format string for the debug message to print.
- @param BaseListMarker BASE_LIST marker for the variable argument list.
- **/
- VOID
- EFIAPI
- DebugBPrint (
- IN UINTN ErrorLevel,
- IN CONST CHAR8 *Format,
- IN BASE_LIST BaseListMarker
- )
- {
- CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
- AsciiBSPrint (Buffer, sizeof (Buffer), Format, BaseListMarker);
- printf ("%s", Buffer);
- }
- /**
- Prints an assert message containing a filename, line number, and description.
- This may be followed by a breakpoint or a dead loop.
- Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n"
- to the debug output device. If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of
- PcdDebugPropertyMask is set then CpuBreakpoint() is called. Otherwise, if
- DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugPropertyMask is set then
- CpuDeadLoop() is called. If neither of these bits are set, then this function
- returns immediately after the message is printed to the debug output device.
- DebugAssert() must actively prevent recursion. If DebugAssert() is called while
- processing another DebugAssert(), then DebugAssert() must return immediately.
- If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.
- If Description is NULL, then a <Description> string of "(NULL) Description" is printed.
- @param FileName The pointer to the name of the source file that generated the assert condition.
- @param LineNumber The line number in the source file that generated the assert condition
- @param Description The pointer to the description of the assert condition.
- **/
- VOID
- EFIAPI
- DebugAssert (
- IN CONST CHAR8 *FileName,
- IN UINTN LineNumber,
- IN CONST CHAR8 *Description
- )
- {
- printf ("ASSERT: %s(%d): %s\n", FileName, (INT32)(UINT32)LineNumber, Description);
- //
- // Generate a Breakpoint, DeadLoop, or NOP based on PCD settings
- //
- if ((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {
- CpuBreakpoint ();
- } else if ((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {
- CpuDeadLoop ();
- }
- }
- /**
- Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.
- This function fills Length bytes of Buffer with the value specified by
- PcdDebugClearMemoryValue, and returns Buffer.
- If Buffer is NULL, then ASSERT().
- If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
- @param Buffer The pointer to the target buffer to be filled with PcdDebugClearMemoryValue.
- @param Length The number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.
- @return Buffer The pointer to the target buffer filled with PcdDebugClearMemoryValue.
- **/
- VOID *
- EFIAPI
- DebugClearMemory (
- OUT VOID *Buffer,
- IN UINTN Length
- )
- {
- //
- // If Buffer is NULL, then ASSERT().
- //
- ASSERT (Buffer != NULL);
- //
- // SetMem() checks for the the ASSERT() condition on Length and returns Buffer
- //
- return SetMem (Buffer, Length, PcdGet8 (PcdDebugClearMemoryValue));
- }
- /**
- Returns TRUE if ASSERT() macros are enabled.
- This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of
- PcdDebugPropertyMask is set. Otherwise FALSE is returned.
- @retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugPropertyMask is set.
- @retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugPropertyMask is clear.
- **/
- BOOLEAN
- EFIAPI
- DebugAssertEnabled (
- VOID
- )
- {
- return (BOOLEAN)((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);
- }
- /**
- Returns TRUE if DEBUG() macros are enabled.
- This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of
- PcdDebugPropertyMask is set. Otherwise FALSE is returned.
- @retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugPropertyMask is set.
- @retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugPropertyMask is clear.
- **/
- BOOLEAN
- EFIAPI
- DebugPrintEnabled (
- VOID
- )
- {
- return (BOOLEAN)((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);
- }
- /**
- Returns TRUE if DEBUG_CODE() macros are enabled.
- This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of
- PcdDebugPropertyMask is set. Otherwise FALSE is returned.
- @retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugPropertyMask is set.
- @retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugPropertyMask is clear.
- **/
- BOOLEAN
- EFIAPI
- DebugCodeEnabled (
- VOID
- )
- {
- return (BOOLEAN)((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);
- }
- /**
- Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.
- This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of
- PcdDebugPropertyMask is set. Otherwise FALSE is returned.
- @retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugPropertyMask is set.
- @retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugPropertyMask is clear.
- **/
- BOOLEAN
- EFIAPI
- DebugClearMemoryEnabled (
- VOID
- )
- {
- return (BOOLEAN)((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);
- }
- /**
- Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.
- This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.
- @retval TRUE Current ErrorLevel is supported.
- @retval FALSE Current ErrorLevel is not supported.
- **/
- BOOLEAN
- EFIAPI
- DebugPrintLevelEnabled (
- IN CONST UINTN ErrorLevel
- )
- {
- return (BOOLEAN)((ErrorLevel & PcdGet32 (PcdFixedDebugPrintErrorLevel)) != 0);
- }
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