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audk/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Print/Print.c

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/*++
Copyright (c) 2004, Intel Corporation
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.
Module Name:
Print.c
Abstract:
Basic Ascii AvSPrintf() function named AvSPrint(). AvSPrint() enables very
simple implemenation of debug prints.
You can not Print more than PEI_LIB_MAX_PRINT_BUFFER characters at a
time. This makes the implementation very simple.
AvSPrint format specification has the follwoing form
%[flags][width]type
flags:
'-' - Left justify
'+' - Prefix a sign
' ' - Prefix a blank
',' - Place commas in numberss
'0' - Prefix for width with zeros
'l' - UINT64
'L' - UINT64
width:
'*' - Get width from a UINTN argumnet from the argument list
Decimal number that represents width of print
type:
'p' - arugment is VOID *; printed as hex number
'X' - argument is a UINTN hex number, prefix '0'
'x' - argument is a hex number
'd' - argument is a decimal number
'a' - argument is an ascii string
'S', 's' - argument is an Unicode string
'g' - argument is a pointer to an EFI_GUID
't' - argument is a pointer to an EFI_TIME structure
'c' - argument is an ascii character
'r' - argument is EFI_STATUS
'%' - Print a %
--*/
#include "Tiano.h"
#include "Pei.h"
#include "PeiLib.h"
#include "Print.h"
STATIC
CHAR8 *
GetFlagsAndWidth (
IN CHAR8 *Format,
OUT UINTN *Flags,
OUT UINTN *Width,
IN OUT VA_LIST *Marker
);
STATIC
UINTN
ValueToString (
IN OUT CHAR8 *Buffer,
IN INT64 Value,
IN UINTN Flags,
IN UINTN Width
);
STATIC
UINTN
ValueTomHexStr (
IN OUT CHAR8 *Buffer,
IN UINT64 Value,
IN UINTN Flags,
IN UINTN Width
);
STATIC
UINTN
GuidToString (
IN EFI_GUID *Guid,
IN OUT CHAR8 *Buffer,
IN UINTN BufferSize
);
STATIC
UINTN
TimeToString (
IN EFI_TIME *Time,
IN OUT CHAR8 *Buffer,
IN UINTN BufferSize
);
STATIC
UINTN
EfiStatusToString (
IN EFI_STATUS Status,
OUT CHAR8 *Buffer,
IN UINTN BufferSize
);
UINTN
ASPrint (
OUT CHAR8 *Buffer,
IN UINTN BufferSize,
IN CONST CHAR8 *Format,
...
)
/*++
Routine Description:
ASPrint function to process format and place the results in Buffer.
Arguments:
Buffer - Ascii buffer to print the results of the parsing of Format into.
BufferSize - Maximum number of characters to put into buffer. Zero means no
limit.
Format - Ascii format string see file header for more details.
... - Vararg list consumed by processing Format.
Returns:
Number of characters printed.
--*/
{
UINTN Return;
VA_LIST Marker;
VA_START(Marker, Format);
Return = AvSPrint(Buffer, BufferSize, Format, Marker);
VA_END (Marker);
return Return;
}
UINTN
AvSPrint (
OUT CHAR8 *StartOfBuffer,
IN UINTN BufferSize,
IN CONST CHAR8 *FormatString,
IN VA_LIST Marker
)
/*++
Routine Description:
AvSPrint function to process format and place the results in Buffer. Since a
VA_LIST is used this rountine allows the nesting of Vararg routines. Thus
this is the main print working routine
Arguments:
StartOfBuffer - Ascii buffer to print the results of the parsing of Format into.
BufferSize - Maximum number of characters to put into buffer. Zero means
no limit.
FormatString - Ascii format string see file header for more details.
Marker - Vararg list consumed by processing Format.
Returns:
Number of characters printed.
--*/
{
CHAR8 TempBuffer[CHARACTER_NUMBER_FOR_VALUE];
CHAR8 *Buffer;
CHAR8 *AsciiStr;
CHAR16 *UnicodeStr;
CHAR8 *Format;
UINTN Index;
UINTN Flags;
UINTN Width;
UINTN Count;
UINTN BufferLeft;
UINT64 Value;
EFI_GUID *TmpGUID;
//
// Process the format string. Stop if Buffer is over run.
//
Buffer = StartOfBuffer;
Format = (CHAR8 *) FormatString;
BufferLeft = BufferSize;
for (Index = 0; (*Format != '\0') && (Index < BufferSize - 1); Format++) {
if (*Format != '%') {
if ((*Format == '\n') && (Index < BufferSize - 2)) {
//
// If carage return add line feed
//
Buffer[Index++] = '\r';
BufferLeft -= sizeof (CHAR8);
}
Buffer[Index++] = *Format;
BufferLeft -= sizeof (CHAR8);
} else {
//
// Now it's time to parse what follows after %
//
Format = GetFlagsAndWidth (Format, &Flags, &Width, &Marker);
switch (*Format) {
case 'p':
//
// Flag space, +, 0, L & l are invalid for type p.
//
Flags &= ~(PREFIX_BLANK| PREFIX_SIGN | LONG_TYPE);
if (sizeof (VOID *) > 4) {
Flags |= LONG_TYPE;
Value = VA_ARG (Marker, UINT64);
} else {
Value = VA_ARG (Marker, UINTN);
}
Flags |= PREFIX_ZERO;
ValueTomHexStr (TempBuffer, Value, Flags, Width);
AsciiStr = TempBuffer;
for (; (*AsciiStr != '\0') && (Index < BufferSize - 1); AsciiStr++) {
Buffer[Index++] = *AsciiStr;
}
break;
case 'X':
Flags |= PREFIX_ZERO;
Width = sizeof (UINT64) * 2;
//
// break skiped on purpose
//
case 'x':
if ((Flags & LONG_TYPE) == LONG_TYPE) {
Value = VA_ARG (Marker, UINT64);
} else {
Value = VA_ARG (Marker, UINTN);
}
ValueTomHexStr (TempBuffer, Value, Flags, Width);
AsciiStr = TempBuffer;
for (; (*AsciiStr != '\0') && (Index < BufferSize - 1); AsciiStr++) {
Buffer[Index++] = *AsciiStr;
}
break;
case 'd':
if ((Flags & LONG_TYPE) == LONG_TYPE) {
Value = VA_ARG (Marker, UINT64);
} else {
Value = (UINTN) VA_ARG (Marker, UINTN);
}
ValueToString (TempBuffer, Value, Flags, Width);
AsciiStr = TempBuffer;
for (; (*AsciiStr != '\0') && (Index < BufferSize - 1); AsciiStr++) {
Buffer[Index++] = *AsciiStr;
}
break;
case 's':
case 'S':
UnicodeStr = (CHAR16 *) VA_ARG (Marker, CHAR8 *);
if (UnicodeStr == NULL) {
UnicodeStr = L"<null string>";
}
for (Count = 0; (*UnicodeStr != '\0') && (Index < BufferSize - 1); UnicodeStr++, Count++) {
Buffer[Index++] = (CHAR8) *UnicodeStr;
}
//
// Add padding if needed
//
for (; (Count < Width) && (Index < BufferSize - 1); Count++) {
Buffer[Index++] = ' ';
}
break;
case 'a':
AsciiStr = (CHAR8 *) VA_ARG (Marker, CHAR8 *);
if (AsciiStr == NULL) {
AsciiStr = "<null string>";
}
for (Count = 0; (*AsciiStr != '\0') && (Index < BufferSize - 1); AsciiStr++, Count++) {
Buffer[Index++] = *AsciiStr;
}
//
// Add padding if needed
//
for (; (Count < Width) && (Index < BufferSize - 1); Count++) {
Buffer[Index++] = ' ';
}
break;
case 'c':
Buffer[Index++] = (CHAR8) VA_ARG (Marker, UINTN);
break;
case 'g':
TmpGUID = VA_ARG (Marker, EFI_GUID *);
if (TmpGUID != NULL) {
Index += GuidToString (
TmpGUID,
&Buffer[Index],
BufferLeft
);
}
break;
case 't':
Index += TimeToString (
VA_ARG (Marker, EFI_TIME *),
&Buffer[Index],
BufferLeft
);
break;
case 'r':
Index += EfiStatusToString (
VA_ARG (Marker, EFI_STATUS),
&Buffer[Index],
BufferLeft
);
break;
case '%':
Buffer[Index++] = *Format;
break;
default:
//
// if the type is unknown print it to the screen
//
Buffer[Index++] = *Format;
}
BufferLeft = BufferSize - Index;
}
}
Buffer[Index++] = '\0';
return &Buffer[Index] - StartOfBuffer;
}
STATIC
CHAR8 *
GetFlagsAndWidth (
IN CHAR8 *Format,
OUT UINTN *Flags,
OUT UINTN *Width,
IN OUT VA_LIST *Marker
)
/*++
Routine Description:
AvSPrint worker function that parses flag and width information from the
Format string and returns the next index into the Format string that needs
to be parsed. See file headed for details of Flag and Width.
Arguments:
Format - Current location in the AvSPrint format string.
Flags - Returns flags
Width - Returns width of element
Marker - Vararg list that may be paritally consumed and returned.
Returns:
Pointer indexed into the Format string for all the information parsed
by this routine.
--*/
{
UINTN Count;
BOOLEAN Done;
*Flags = 0;
*Width = 0;
for (Done = FALSE; !Done; ) {
Format++;
switch (*Format) {
case '-': *Flags |= LEFT_JUSTIFY; break;
case '+': *Flags |= PREFIX_SIGN; break;
case ' ': *Flags |= PREFIX_BLANK; break;
case ',': *Flags |= COMMA_TYPE; break;
case 'L':
case 'l': *Flags |= LONG_TYPE; break;
case '*':
*Width = VA_ARG (*Marker, UINTN);
break;
case '0':
*Flags |= PREFIX_ZERO;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
Count = 0;
do {
Count = (Count * 10) + *Format - '0';
Format++;
} while ((*Format >= '0') && (*Format <= '9'));
Format--;
*Width = Count;
break;
default:
Done = TRUE;
}
}
return Format;
}
static CHAR8 mHexStr[] = { '0','1','2','3','4','5','6','7',
'8','9','A','B','C','D','E','F' };
STATIC
UINTN
ValueTomHexStr (
IN OUT CHAR8 *Buffer,
IN UINT64 Value,
IN UINTN Flags,
IN UINTN Width
)
/*++
Routine Description:
AvSPrint worker function that prints a Value as a hex number in Buffer
Arguments:
Buffer - Location to place ascii hex string of Value.
Value - Hex value to convert to a string in Buffer.
Flags - Flags to use in printing Hex string, see file header for details.
Width - Width of hex value.
Returns:
Number of characters printed.
--*/
{
CHAR8 TempBuffer[CHARACTER_NUMBER_FOR_VALUE];
CHAR8 *TempStr;
CHAR8 Prefix;
CHAR8 *BufferPtr;
UINTN Count;
UINTN Index;
TempStr = TempBuffer;
BufferPtr = Buffer;
//
// Count starts at one since we will null terminate. Each iteration of the
// loop picks off one nibble. Oh yea TempStr ends up backwards
//
Count = 0;
do {
*(TempStr++) = mHexStr[Value & 0x0f];
Value = RShiftU64 (Value, 4);
Count++;
} while (Value != 0);
if (Flags & PREFIX_ZERO) {
Prefix = '0';
} else if (!(Flags & LEFT_JUSTIFY)) {
Prefix = ' ';
} else {
Prefix = 0x00;
}
for (Index = Count; Index < Width; Index++) {
*(TempStr++) = Prefix;
}
//
// Reverse temp string into Buffer.
//
if (Width > 0 && (UINTN) (TempStr - TempBuffer) > Width) {
TempStr = TempBuffer + Width;
}
Index = 0;
while (TempStr != TempBuffer) {
*(BufferPtr++) = *(--TempStr);
Index++;
}
*BufferPtr = 0;
return Index;
}
STATIC
UINTN
ValueToString (
IN OUT CHAR8 *Buffer,
IN INT64 Value,
IN UINTN Flags,
IN UINTN Width
)
/*++
Routine Description:
AvSPrint worker function that prints a Value as a decimal number in Buffer
Arguments:
Buffer - Location to place ascii decimal number string of Value.
Value - Decimal value to convert to a string in Buffer.
Flags - Flags to use in printing decimal string, see file header for details.
Width - Width of hex value.
Returns:
Number of characters printed.
--*/
{
CHAR8 TempBuffer[CHARACTER_NUMBER_FOR_VALUE];
CHAR8 *TempStr;
CHAR8 *BufferPtr;
UINTN Count;
UINTN NumberCount;
UINTN Remainder;
BOOLEAN Negative;
UINTN Index;
Negative = FALSE;
TempStr = TempBuffer;
BufferPtr = Buffer;
Count = 0;
NumberCount = 0;
if (Value < 0) {
Negative = TRUE;
Value = -Value;
}
do {
Value = (INT64)DivU64x32 ((UINT64)Value, 10, &Remainder);
*(TempStr++) = (CHAR8)(Remainder + '0');
Count++;
NumberCount++;
if ((Flags & COMMA_TYPE) == COMMA_TYPE) {
if (NumberCount % 3 == 0 && Value != 0) {
*(TempStr++) = ',';
Count++;
}
}
} while (Value != 0);
if (Negative) {
*(BufferPtr++) = '-';
Count++;
}
//
// Reverse temp string into Buffer.
//
if (Width > 0 && (UINTN) (TempStr - TempBuffer) > Width) {
TempStr = TempBuffer + Width;
}
Index = 0;
while (TempStr != TempBuffer) {
*(BufferPtr++) = *(--TempStr);
}
*BufferPtr = 0;
return Index;
}
STATIC
UINTN
GuidToString (
IN EFI_GUID *Guid,
IN CHAR8 *Buffer,
IN UINTN BufferSize
)
/*++
Routine Description:
AvSPrint worker function that prints an EFI_GUID.
Arguments:
Guid - Pointer to GUID to print.
Buffer - Buffe to print Guid into.
BufferSize - Size of Buffer.
Returns:
Number of characters printed.
--*/
{
UINTN Size;
Size = ASPrint (
Buffer,
BufferSize,
"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
(UINTN)Guid->Data1,
(UINTN)Guid->Data2,
(UINTN)Guid->Data3,
(UINTN)Guid->Data4[0],
(UINTN)Guid->Data4[1],
(UINTN)Guid->Data4[2],
(UINTN)Guid->Data4[3],
(UINTN)Guid->Data4[4],
(UINTN)Guid->Data4[5],
(UINTN)Guid->Data4[6],
(UINTN)Guid->Data4[7]
);
//
// ASPrint will null terminate the string. The -1 skips the null
//
return Size - 1;
}
STATIC
UINTN
TimeToString (
IN EFI_TIME *Time,
OUT CHAR8 *Buffer,
IN UINTN BufferSize
)
/*++
Routine Description:
AvSPrint worker function that prints EFI_TIME.
Arguments:
Time - Pointer to EFI_TIME sturcture to print.
Buffer - Buffer to print Time into.
BufferSize - Size of Buffer.
Returns:
Number of characters printed.
--*/
{
UINTN Size;
Size = ASPrint (
Buffer,
BufferSize,
"%02d/%02d/%04d %02d:%02d",
(UINTN)Time->Month,
(UINTN)Time->Day,
(UINTN)Time->Year,
(UINTN)Time->Hour,
(UINTN)Time->Minute
);
//
// ASPrint will null terminate the string. The -1 skips the null
//
return Size - 1;
}
STATIC
UINTN
EfiStatusToString (
IN EFI_STATUS Status,
OUT CHAR8 *Buffer,
IN UINTN BufferSize
)
/*++
Routine Description:
AvSPrint worker function that prints EFI_STATUS as a string. If string is
not known a hex value will be printed.
Arguments:
Status - EFI_STATUS sturcture to print.
Buffer - Buffer to print EFI_STATUS message string into.
BufferSize - Size of Buffer.
Returns:
Number of characters printed.
--*/
{
UINTN Size;
CHAR8 *Desc;
if (Status == EFI_SUCCESS) {
Desc = "Success";
} else if (Status == EFI_LOAD_ERROR) {
Desc = "Load Error";
} else if (Status == EFI_INVALID_PARAMETER) {
Desc = "Invalid Parameter";
} else if (Status == EFI_UNSUPPORTED) {
Desc = "Unsupported";
} else if (Status == EFI_BAD_BUFFER_SIZE) {
Desc = "Bad Buffer Size";
} else if (Status == EFI_BUFFER_TOO_SMALL) {
Desc = "Buffer Too Small";
} else if (Status == EFI_NOT_READY) {
Desc = "Not Ready";
} else if (Status == EFI_DEVICE_ERROR) {
Desc = "Device Error";
} else if (Status == EFI_WRITE_PROTECTED) {
Desc = "Write Protected";
} else if (Status == EFI_OUT_OF_RESOURCES) {
Desc = "Out of Resources";
} else if (Status == EFI_VOLUME_CORRUPTED) {
Desc = "Volume Corrupt";
} else if (Status == EFI_VOLUME_FULL) {
Desc = "Volume Full";
} else if (Status == EFI_NO_MEDIA) {
Desc = "No Media";
} else if (Status == EFI_MEDIA_CHANGED) {
Desc = "Media changed";
} else if (Status == EFI_NOT_FOUND) {
Desc = "Not Found";
} else if (Status == EFI_ACCESS_DENIED) {
Desc = "Access Denied";
} else if (Status == EFI_NO_RESPONSE) {
Desc = "No Response";
} else if (Status == EFI_NO_MAPPING) {
Desc = "No mapping";
} else if (Status == EFI_TIMEOUT) {
Desc = "Time out";
} else if (Status == EFI_NOT_STARTED) {
Desc = "Not started";
} else if (Status == EFI_ALREADY_STARTED) {
Desc = "Already started";
} else if (Status == EFI_ABORTED) {
Desc = "Aborted";
} else if (Status == EFI_ICMP_ERROR) {
Desc = "ICMP Error";
} else if (Status == EFI_TFTP_ERROR) {
Desc = "TFTP Error";
} else if (Status == EFI_PROTOCOL_ERROR) {
Desc = "Protocol Error";
} else if (Status == EFI_WARN_UNKNOWN_GLYPH) {
Desc = "Warning Unknown Glyph";
} else if (Status == EFI_WARN_DELETE_FAILURE) {
Desc = "Warning Delete Failure";
} else if (Status == EFI_WARN_WRITE_FAILURE) {
Desc = "Warning Write Failure";
} else if (Status == EFI_WARN_BUFFER_TOO_SMALL) {
Desc = "Warning Buffer Too Small";
} else {
Desc = NULL;
}
//
// If we found a match, copy the message to the user's buffer. Otherwise
// sprint the hex status code to their buffer.
//
if (Desc != NULL) {
Size = ASPrint (Buffer, BufferSize, "%a", Desc);
} else {
Size = ASPrint (Buffer, BufferSize, "%X", Status);
}
return Size - 1;
}
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