mirror of https://github.com/acidanthera/audk.git
378 lines
11 KiB
C
378 lines
11 KiB
C
/** @file
|
|
Base Debug library instance for QEMU debug port.
|
|
It uses PrintLib to send debug messages to a fixed I/O port.
|
|
|
|
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
|
|
Copyright (c) 2012, Red Hat, Inc.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include <Base.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/IoLib.h>
|
|
#include <Library/PrintLib.h>
|
|
#include <Library/PcdLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/DebugPrintErrorLevelLib.h>
|
|
#include "DebugLibDetect.h"
|
|
|
|
//
|
|
// Define the maximum debug and assert message length that this library supports
|
|
//
|
|
#define MAX_DEBUG_MESSAGE_LENGTH 0x100
|
|
|
|
//
|
|
// VA_LIST can not initialize to NULL for all compiler, so we use this to
|
|
// indicate a null VA_LIST
|
|
//
|
|
VA_LIST mVaListNull;
|
|
|
|
/**
|
|
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 ... 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 base on Null-terminated format string and a
|
|
VA_LIST argument list or a BASE_LIST argument 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 VaListMarker VA_LIST marker for the variable argument list.
|
|
@param BaseListMarker BASE_LIST marker for the variable argument list.
|
|
|
|
**/
|
|
VOID
|
|
DebugPrintMarker (
|
|
IN UINTN ErrorLevel,
|
|
IN CONST CHAR8 *Format,
|
|
IN VA_LIST VaListMarker,
|
|
IN BASE_LIST BaseListMarker
|
|
)
|
|
{
|
|
CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
|
|
UINTN Length;
|
|
|
|
//
|
|
// If Format is NULL, then ASSERT().
|
|
//
|
|
ASSERT (Format != NULL);
|
|
|
|
//
|
|
// Check if the global mask disables this message or the device is inactive
|
|
//
|
|
if ((ErrorLevel & GetDebugPrintErrorLevel ()) == 0 ||
|
|
!PlatformDebugLibIoPortFound ()) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Convert the DEBUG() message to an ASCII String
|
|
//
|
|
if (BaseListMarker == NULL) {
|
|
Length = AsciiVSPrint (Buffer, sizeof (Buffer), Format, VaListMarker);
|
|
} else {
|
|
Length = AsciiBSPrint (Buffer, sizeof (Buffer), Format, BaseListMarker);
|
|
}
|
|
|
|
//
|
|
// Send the print string to the debug I/O port
|
|
//
|
|
IoWriteFifo8 (PcdGet16 (PcdDebugIoPort), Length, Buffer);
|
|
}
|
|
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
DebugPrintMarker (ErrorLevel, Format, VaListMarker, NULL);
|
|
}
|
|
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
DebugPrintMarker (ErrorLevel, Format, mVaListNull, BaseListMarker);
|
|
}
|
|
|
|
|
|
/**
|
|
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
|
|
PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if
|
|
DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask 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
|
|
)
|
|
{
|
|
CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
|
|
UINTN Length;
|
|
|
|
//
|
|
// Generate the ASSERT() message in Ascii format
|
|
//
|
|
Length = AsciiSPrint (Buffer, sizeof Buffer, "ASSERT %a(%Lu): %a\n",
|
|
FileName, (UINT64)LineNumber, Description);
|
|
|
|
//
|
|
// Send the print string to the debug I/O port, if present
|
|
//
|
|
if (PlatformDebugLibIoPortFound ()) {
|
|
IoWriteFifo8 (PcdGet16 (PcdDebugIoPort), Length, Buffer);
|
|
}
|
|
|
|
//
|
|
// 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
|
|
PcdDebugProperyMask is set. Otherwise FALSE is returned.
|
|
|
|
@retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.
|
|
@retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask 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
|
|
PcdDebugProperyMask is set. Otherwise FALSE is returned.
|
|
|
|
@retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.
|
|
@retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask 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
|
|
PcdDebugProperyMask is set. Otherwise FALSE is returned.
|
|
|
|
@retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.
|
|
@retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask 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
|
|
PcdDebugProperyMask is set. Otherwise FALSE is returned.
|
|
|
|
@retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
|
|
@retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask 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);
|
|
}
|
|
|
|
/**
|
|
Return the result of detecting the debug I/O port device.
|
|
|
|
@retval TRUE if the debug I/O port device was detected.
|
|
@retval FALSE otherwise
|
|
|
|
**/
|
|
BOOLEAN
|
|
EFIAPI
|
|
PlatformDebugLibIoPortDetect (
|
|
VOID
|
|
)
|
|
{
|
|
return IoRead8 (PcdGet16 (PcdDebugIoPort)) == BOCHS_DEBUG_PORT_MAGIC;
|
|
}
|