mirror of https://github.com/acidanthera/audk.git
301 lines
8.4 KiB
C
301 lines
8.4 KiB
C
/** @file
|
||
UEFI Debug Library that uses PrintLib to send messages to CONOUT.
|
||
|
||
Copyright (c) 2006, Intel Corporation<BR>
|
||
All rights reserved. This program and the accompanying materials
|
||
are licensed and made available under the terms and conditions of the BSD License
|
||
which accompanies this distribution. The full text of the license may be found at
|
||
http://opensource.org/licenses/bsd-license.php
|
||
|
||
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||
|
||
**/
|
||
|
||
//
|
||
// Define the maximum debug and assert message length that this library supports.
|
||
//
|
||
#define MAX_DEBUG_MESSAGE_LENGTH 0x100
|
||
|
||
STATIC BOOLEAN mDebugLevelInstalled = FALSE;
|
||
STATIC EFI_DEBUG_LEVEL_PROTOCOL mDebugLevel = { 0 };
|
||
|
||
/**
|
||
Installs Debug Level Protocol.
|
||
|
||
The constructor function installs Debug Level Protocol on the ImageHandle.
|
||
It will ASSERT() if the installation fails and will always return EFI_SUCCESS.
|
||
|
||
@param ImageHandle The firmware allocated handle for the EFI image.
|
||
@param SystemTable A pointer to the EFI System Table.
|
||
|
||
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
|
||
|
||
**/
|
||
EFI_STATUS
|
||
EFIAPI
|
||
DebugLibConstructor (
|
||
IN EFI_HANDLE ImageHandle,
|
||
IN EFI_SYSTEM_TABLE *SystemTable
|
||
)
|
||
{
|
||
EFI_STATUS Status;
|
||
|
||
//
|
||
// Initialize Debug Level Protocol.
|
||
//
|
||
mDebugLevel.DebugLevel = PcdGet32(PcdDebugPrintErrorLevel);
|
||
|
||
//
|
||
// Install Debug Level Protocol.
|
||
//
|
||
Status = gBS->InstallMultipleProtocolInterfaces (
|
||
&ImageHandle,
|
||
&gEfiDebugLevelProtocolGuid,
|
||
&mDebugLevel,
|
||
NULL
|
||
);
|
||
ASSERT_EFI_ERROR (Status);
|
||
|
||
//
|
||
// Set flag to show that the Debug Level Protocol has been installed.
|
||
//
|
||
mDebugLevelInstalled = TRUE;
|
||
|
||
return Status;
|
||
}
|
||
|
||
/**
|
||
|
||
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 PcdDebugPrintErrorLevel, 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.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
DebugPrint (
|
||
IN UINTN ErrorLevel,
|
||
IN CONST CHAR8 *Format,
|
||
...
|
||
)
|
||
{
|
||
CHAR16 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
|
||
VA_LIST Marker;
|
||
|
||
//
|
||
// If Format is NULL, then ASSERT().
|
||
//
|
||
ASSERT (Format != NULL);
|
||
|
||
//
|
||
// Check driver Debug Level value and global debug level
|
||
//
|
||
if (mDebugLevelInstalled) {
|
||
if ((ErrorLevel & mDebugLevel.DebugLevel) == 0) {
|
||
return;
|
||
}
|
||
} else {
|
||
if ((ErrorLevel & PcdGet32(PcdDebugPrintErrorLevel)) == 0) {
|
||
return;
|
||
}
|
||
}
|
||
|
||
//
|
||
// Convert the DEBUG() message to a Unicode String
|
||
//
|
||
VA_START (Marker, Format);
|
||
UnicodeVSPrintAsciiFormat (Buffer, sizeof (Buffer), Format, Marker);
|
||
VA_END (Marker);
|
||
|
||
//
|
||
// Send the print string to the Console Output device if CONOUT is available.
|
||
//
|
||
if (gST->ConOut != NULL) {
|
||
gST->ConOut->OutputString (gST->ConOut, 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
|
||
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 recusrsion. 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 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 Pointer to the description of the assert condition.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
DebugAssert (
|
||
IN CONST CHAR8 *FileName,
|
||
IN UINTN LineNumber,
|
||
IN CONST CHAR8 *Description
|
||
)
|
||
{
|
||
CHAR16 Buffer[MAX_DEBUG_MESSAGE_LENGTH];
|
||
|
||
//
|
||
// Generate the ASSERT() message in Unicode format
|
||
//
|
||
UnicodeSPrintAsciiFormat (Buffer, sizeof (Buffer), "ASSERT %s(%d): %s\n", FileName, LineNumber, Description);
|
||
|
||
//
|
||
// Send the print string to the Console Output device if CONOUT is available.
|
||
//
|
||
if (gST->ConOut != NULL) {
|
||
gST->ConOut->OutputString (gST->ConOut, 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 <20> Buffer + 1), then ASSERT().
|
||
|
||
@param Buffer Pointer to the target buffer to fill with PcdDebugClearMemoryValue.
|
||
@param Length Number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.
|
||
|
||
@return Buffer
|
||
|
||
**/
|
||
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 ((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 ((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 ((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_DEBUG_CLEAR_MEMORY_ENABLED bit of
|
||
PcdDebugProperyMask is set. Otherwise FALSE is returned.
|
||
|
||
@retval TRUE The DEBUG_PROPERTY_DEBUG_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
|
||
@retval FALSE The DEBUG_PROPERTY_DEBUG_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.
|
||
|
||
**/
|
||
BOOLEAN
|
||
EFIAPI
|
||
DebugClearMemoryEnabled (
|
||
VOID
|
||
)
|
||
{
|
||
return ((PcdGet8(PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);
|
||
}
|