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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);
+}