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kolibrios/drivers/devman/acpica/compiler/aslutils.c

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acpica library git-svn-id: svn://kolibrios.org@1498 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-06-18 16:39:07 +02:00
/******************************************************************************
*
* Module Name: aslutils -- compiler utilities
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#include "aslcompiler.h"
#include "aslcompiler.y.h"
#include "acnamesp.h"
#include "amlcode.h"
#define _COMPONENT ACPI_COMPILER
ACPI_MODULE_NAME ("aslutils")
#ifdef _USE_BERKELEY_YACC
extern const char * const AslCompilername[];
static const char * const *yytname = &AslCompilername[254];
#else
extern const char * const yytname[];
#endif
char HexLookup[] =
{
'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
};
/* Local prototypes */
static ACPI_STATUS
UtStrtoul64 (
char *String,
UINT32 Base,
UINT64 *RetInteger);
static void
UtPadNameWithUnderscores (
char *NameSeg,
char *PaddedNameSeg);
static void
UtAttachNameseg (
ACPI_PARSE_OBJECT *Op,
char *Name);
/*******************************************************************************
*
* FUNCTION: AcpiPsDisplayConstantOpcodes
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Print AML opcodes that can be used in constant expressions.
*
******************************************************************************/
void
UtDisplayConstantOpcodes (
void)
{
UINT32 i;
printf ("Constant expression opcode information\n\n");
for (i = 0; i < sizeof (AcpiGbl_AmlOpInfo) / sizeof (ACPI_OPCODE_INFO); i++)
{
if (AcpiGbl_AmlOpInfo[i].Flags & AML_CONSTANT)
{
printf ("%s\n", AcpiGbl_AmlOpInfo[i].Name);
}
}
}
/*******************************************************************************
*
* FUNCTION: UtLocalCalloc
*
* PARAMETERS: Size - Bytes to be allocated
*
* RETURN: Pointer to the allocated memory. Guaranteed to be valid.
*
* DESCRIPTION: Allocate zero-initialized memory. Aborts the compile on an
* allocation failure, on the assumption that nothing more can be
* accomplished.
*
******************************************************************************/
void *
UtLocalCalloc (
UINT32 Size)
{
void *Allocated;
Allocated = ACPI_ALLOCATE_ZEROED (Size);
if (!Allocated)
{
AslCommonError (ASL_ERROR, ASL_MSG_MEMORY_ALLOCATION,
Gbl_CurrentLineNumber, Gbl_LogicalLineNumber,
Gbl_InputByteCount, Gbl_CurrentColumn,
Gbl_Files[ASL_FILE_INPUT].Filename, NULL);
CmCleanupAndExit ();
exit (1);
}
TotalAllocations++;
TotalAllocated += Size;
return (Allocated);
}
/*******************************************************************************
*
* FUNCTION: UtBeginEvent
*
* PARAMETERS: Name - Ascii name of this event
*
* RETURN: Event - Event number (integer index)
*
* DESCRIPTION: Saves the current time with this event
*
******************************************************************************/
UINT8
UtBeginEvent (
char *Name)
{
if (AslGbl_NextEvent >= ASL_NUM_EVENTS)
{
AcpiOsPrintf ("Ran out of compiler event structs!\n");
return (AslGbl_NextEvent);
}
/* Init event with current (start) time */
AslGbl_Events[AslGbl_NextEvent].StartTime = AcpiOsGetTimer ();
AslGbl_Events[AslGbl_NextEvent].EventName = Name;
AslGbl_Events[AslGbl_NextEvent].Valid = TRUE;
return (AslGbl_NextEvent++);
}
/*******************************************************************************
*
* FUNCTION: UtEndEvent
*
* PARAMETERS: Event - Event number (integer index)
*
* RETURN: None
*
* DESCRIPTION: Saves the current time (end time) with this event
*
******************************************************************************/
void
UtEndEvent (
UINT8 Event)
{
if (Event >= ASL_NUM_EVENTS)
{
return;
}
/* Insert end time for event */
AslGbl_Events[Event].EndTime = AcpiOsGetTimer ();
}
/*******************************************************************************
*
* FUNCTION: UtHexCharToValue
*
* PARAMETERS: HexChar - Hex character in Ascii
*
* RETURN: The binary value of the hex character
*
* DESCRIPTION: Perform ascii-to-hex translation
*
******************************************************************************/
UINT8
UtHexCharToValue (
int HexChar)
{
if (HexChar <= 0x39)
{
return ((UINT8) (HexChar - 0x30));
}
if (HexChar <= 0x46)
{
return ((UINT8) (HexChar - 0x37));
}
return ((UINT8) (HexChar - 0x57));
}
/*******************************************************************************
*
* FUNCTION: UtConvertByteToHex
*
* PARAMETERS: RawByte - Binary data
* Buffer - Pointer to where the hex bytes will be stored
*
* RETURN: Ascii hex byte is stored in Buffer.
*
* DESCRIPTION: Perform hex-to-ascii translation. The return data is prefixed
* with "0x"
*
******************************************************************************/
void
UtConvertByteToHex (
UINT8 RawByte,
UINT8 *Buffer)
{
Buffer[0] = '0';
Buffer[1] = 'x';
Buffer[2] = (UINT8) HexLookup[(RawByte >> 4) & 0xF];
Buffer[3] = (UINT8) HexLookup[RawByte & 0xF];
}
/*******************************************************************************
*
* FUNCTION: UtConvertByteToAsmHex
*
* PARAMETERS: RawByte - Binary data
* Buffer - Pointer to where the hex bytes will be stored
*
* RETURN: Ascii hex byte is stored in Buffer.
*
* DESCRIPTION: Perform hex-to-ascii translation. The return data is prefixed
* with "0x"
*
******************************************************************************/
void
UtConvertByteToAsmHex (
UINT8 RawByte,
UINT8 *Buffer)
{
Buffer[0] = '0';
Buffer[1] = (UINT8) HexLookup[(RawByte >> 4) & 0xF];
Buffer[2] = (UINT8) HexLookup[RawByte & 0xF];
Buffer[3] = 'h';
}
/*******************************************************************************
*
* FUNCTION: DbgPrint
*
* PARAMETERS: Type - Type of output
* Fmt - Printf format string
* ... - variable printf list
*
* RETURN: None
*
* DESCRIPTION: Conditional print statement. Prints to stderr only if the
* debug flag is set.
*
******************************************************************************/
void
DbgPrint (
UINT32 Type,
char *Fmt,
...)
{
va_list Args;
va_start (Args, Fmt);
if (!Gbl_DebugFlag)
{
return;
}
if ((Type == ASL_PARSE_OUTPUT) &&
(!(AslCompilerdebug)))
{
return;
}
(void) vfprintf (stderr, Fmt, Args);
va_end (Args);
return;
}
/*******************************************************************************
*
* FUNCTION: UtPrintFormattedName
*
* PARAMETERS: ParseOpcode - Parser keyword ID
* Level - Indentation level
*
* RETURN: None
*
* DESCRIPTION: Print the ascii name of the parse opcode.
*
******************************************************************************/
#define TEXT_OFFSET 10
void
UtPrintFormattedName (
UINT16 ParseOpcode,
UINT32 Level)
{
if (Level)
{
DbgPrint (ASL_TREE_OUTPUT,
"%*s", (3 * Level), " ");
}
DbgPrint (ASL_TREE_OUTPUT,
" %-20.20s", UtGetOpName (ParseOpcode));
if (Level < TEXT_OFFSET)
{
DbgPrint (ASL_TREE_OUTPUT,
"%*s", (TEXT_OFFSET - Level) * 3, " ");
}
}
/*******************************************************************************
*
* FUNCTION: UtSetParseOpName
*
* PARAMETERS: Op
*
* RETURN: None
*
* DESCRIPTION: Insert the ascii name of the parse opcode
*
******************************************************************************/
void
UtSetParseOpName (
ACPI_PARSE_OBJECT *Op)
{
strncpy (Op->Asl.ParseOpName, UtGetOpName (Op->Asl.ParseOpcode),
ACPI_MAX_PARSEOP_NAME);
}
/*******************************************************************************
*
* FUNCTION: UtGetOpName
*
* PARAMETERS: ParseOpcode - Parser keyword ID
*
* RETURN: Pointer to the opcode name
*
* DESCRIPTION: Get the ascii name of the parse opcode
*
******************************************************************************/
char *
UtGetOpName (
UINT32 ParseOpcode)
{
/*
* First entries (ASL_YYTNAME_START) in yytname are special reserved names.
* Ignore first 8 characters of the name
*/
return ((char *) yytname
[(ParseOpcode - ASL_FIRST_PARSE_OPCODE) + ASL_YYTNAME_START] + 8);
}
/*******************************************************************************
*
* FUNCTION: UtDisplaySummary
*
* PARAMETERS: FileID - ID of outpout file
*
* RETURN: None
*
* DESCRIPTION: Display compilation statistics
*
******************************************************************************/
void
UtDisplaySummary (
UINT32 FileId)
{
if (FileId != ASL_FILE_STDOUT)
{
/* Compiler name and version number */
FlPrintFile (FileId, "%s version %X [%s]\n",
CompilerId, (UINT32) ACPI_CA_VERSION, __DATE__);
}
if (Gbl_FileType == ASL_INPUT_TYPE_ASCII_DATA)
{
FlPrintFile (FileId,
"Table Input: %s - %u lines, %u bytes, %u fields\n",
Gbl_Files[ASL_FILE_INPUT].Filename, Gbl_CurrentLineNumber,
Gbl_InputByteCount, Gbl_InputFieldCount);
if ((Gbl_ExceptionCount[ASL_ERROR] == 0) || (Gbl_IgnoreErrors))
{
FlPrintFile (FileId,
"Binary Output: %s - %u bytes\n\n",
Gbl_Files[ASL_FILE_AML_OUTPUT].Filename, Gbl_TableLength);
}
}
else
{
/* Input/Output summary */
FlPrintFile (FileId,
"ASL Input: %s - %u lines, %u bytes, %u keywords\n",
Gbl_Files[ASL_FILE_INPUT].Filename, Gbl_CurrentLineNumber,
Gbl_InputByteCount, TotalKeywords);
/* AML summary */
if ((Gbl_ExceptionCount[ASL_ERROR] == 0) || (Gbl_IgnoreErrors))
{
FlPrintFile (FileId,
"AML Output: %s - %u bytes, %u named objects, %u executable opcodes\n\n",
Gbl_Files[ASL_FILE_AML_OUTPUT].Filename, Gbl_TableLength,
TotalNamedObjects, TotalExecutableOpcodes);
}
}
/* Error summary */
FlPrintFile (FileId,
"Compilation complete. %u Errors, %u Warnings, %u Remarks",
Gbl_ExceptionCount[ASL_ERROR],
Gbl_ExceptionCount[ASL_WARNING] +
Gbl_ExceptionCount[ASL_WARNING2] +
Gbl_ExceptionCount[ASL_WARNING3],
Gbl_ExceptionCount[ASL_REMARK]);
if (Gbl_FileType != ASL_INPUT_TYPE_ASCII_DATA)
{
FlPrintFile (FileId,
", %u Optimizations", Gbl_ExceptionCount[ASL_OPTIMIZATION]);
}
FlPrintFile (FileId, "\n");
}
/*******************************************************************************
*
* FUNCTION: UtDisplaySummary
*
* PARAMETERS: Op - Integer parse node
* LowValue - Smallest allowed value
* HighValue - Largest allowed value
*
* RETURN: Op if OK, otherwise NULL
*
* DESCRIPTION: Check integer for an allowable range
*
******************************************************************************/
ACPI_PARSE_OBJECT *
UtCheckIntegerRange (
ACPI_PARSE_OBJECT *Op,
UINT32 LowValue,
UINT32 HighValue)
{
char *ParseError = NULL;
char Buffer[64];
if (!Op)
{
return NULL;
}
if (Op->Asl.Value.Integer < LowValue)
{
ParseError = "Value below valid range";
Op->Asl.Value.Integer = LowValue;
}
if (Op->Asl.Value.Integer > HighValue)
{
ParseError = "Value above valid range";
Op->Asl.Value.Integer = HighValue;
}
if (ParseError)
{
sprintf (Buffer, "%s 0x%X-0x%X", ParseError, LowValue, HighValue);
AslCompilererror (Buffer);
return NULL;
}
return Op;
}
/*******************************************************************************
*
* FUNCTION: UtGetStringBuffer
*
* PARAMETERS: Length - Size of buffer requested
*
* RETURN: Pointer to the buffer. Aborts on allocation failure
*
* DESCRIPTION: Allocate a string buffer. Bypass the local
* dynamic memory manager for performance reasons (This has a
* major impact on the speed of the compiler.)
*
******************************************************************************/
char *
UtGetStringBuffer (
UINT32 Length)
{
char *Buffer;
if ((Gbl_StringCacheNext + Length) >= Gbl_StringCacheLast)
{
Gbl_StringCacheNext = UtLocalCalloc (ASL_STRING_CACHE_SIZE + Length);
Gbl_StringCacheLast = Gbl_StringCacheNext + ASL_STRING_CACHE_SIZE +
Length;
}
Buffer = Gbl_StringCacheNext;
Gbl_StringCacheNext += Length;
return (Buffer);
}
/*******************************************************************************
*
* FUNCTION: UtInternalizeName
*
* PARAMETERS: ExternalName - Name to convert
* ConvertedName - Where the converted name is returned
*
* RETURN: Status
*
* DESCRIPTION: Convert an external (ASL) name to an internal (AML) name
*
******************************************************************************/
ACPI_STATUS
UtInternalizeName (
char *ExternalName,
char **ConvertedName)
{
ACPI_NAMESTRING_INFO Info;
ACPI_STATUS Status;
if (!ExternalName)
{
return (AE_OK);
}
/* Get the length of the new internal name */
Info.ExternalName = ExternalName;
AcpiNsGetInternalNameLength (&Info);
/* We need a segment to store the internal name */
Info.InternalName = UtGetStringBuffer (Info.Length);
if (!Info.InternalName)
{
return (AE_NO_MEMORY);
}
/* Build the name */
Status = AcpiNsBuildInternalName (&Info);
if (ACPI_FAILURE (Status))
{
return (Status);
}
*ConvertedName = Info.InternalName;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: UtPadNameWithUnderscores
*
* PARAMETERS: NameSeg - Input nameseg
* PaddedNameSeg - Output padded nameseg
*
* RETURN: Padded nameseg.
*
* DESCRIPTION: Pads a NameSeg with underscores if necessary to form a full
* ACPI_NAME.
*
******************************************************************************/
static void
UtPadNameWithUnderscores (
char *NameSeg,
char *PaddedNameSeg)
{
UINT32 i;
for (i = 0; (i < ACPI_NAME_SIZE); i++)
{
if (*NameSeg)
{
*PaddedNameSeg = *NameSeg;
NameSeg++;
}
else
{
*PaddedNameSeg = '_';
}
PaddedNameSeg++;
}
}
/*******************************************************************************
*
* FUNCTION: UtAttachNameseg
*
* PARAMETERS: Op - Parent parse node
* Name - Full ExternalName
*
* RETURN: None; Sets the NameSeg field in parent node
*
* DESCRIPTION: Extract the last nameseg of the ExternalName and store it
* in the NameSeg field of the Op.
*
******************************************************************************/
static void
UtAttachNameseg (
ACPI_PARSE_OBJECT *Op,
char *Name)
{
char *NameSeg;
char PaddedNameSeg[4];
if (!Name)
{
return;
}
/* Look for the last dot in the namepath */
NameSeg = strrchr (Name, '.');
if (NameSeg)
{
/* Found last dot, we have also found the final nameseg */
NameSeg++;
UtPadNameWithUnderscores (NameSeg, PaddedNameSeg);
}
else
{
/* No dots in the namepath, there is only a single nameseg. */
/* Handle prefixes */
while ((*Name == '\\') || (*Name == '^'))
{
Name++;
}
/* Remaing string should be one single nameseg */
UtPadNameWithUnderscores (Name, PaddedNameSeg);
}
strncpy (Op->Asl.NameSeg, PaddedNameSeg, 4);
}
/*******************************************************************************
*
* FUNCTION: UtAttachNamepathToOwner
*
* PARAMETERS: Op - Parent parse node
* NameOp - Node that contains the name
*
* RETURN: Sets the ExternalName and Namepath in the parent node
*
* DESCRIPTION: Store the name in two forms in the parent node: The original
* (external) name, and the internalized name that is used within
* the ACPI namespace manager.
*
******************************************************************************/
void
UtAttachNamepathToOwner (
ACPI_PARSE_OBJECT *Op,
ACPI_PARSE_OBJECT *NameOp)
{
ACPI_STATUS Status;
/* Full external path */
Op->Asl.ExternalName = NameOp->Asl.Value.String;
/* Save the NameOp for possible error reporting later */
Op->Asl.ParentMethod = (void *) NameOp;
/* Last nameseg of the path */
UtAttachNameseg (Op, Op->Asl.ExternalName);
/* Create internalized path */
Status = UtInternalizeName (NameOp->Asl.Value.String, &Op->Asl.Namepath);
if (ACPI_FAILURE (Status))
{
/* TBD: abort on no memory */
}
}
/*******************************************************************************
*
* FUNCTION: UtDoConstant
*
* PARAMETERS: String - Hex, Octal, or Decimal string
*
* RETURN: Converted Integer
*
* DESCRIPTION: Convert a string to an integer. With error checking.
*
******************************************************************************/
UINT64
UtDoConstant (
char *String)
{
ACPI_STATUS Status;
UINT64 Converted;
char ErrBuf[64];
Status = UtStrtoul64 (String, 0, &Converted);
if (ACPI_FAILURE (Status))
{
sprintf (ErrBuf, "%s %s\n", "Conversion error:",
AcpiFormatException (Status));
AslCompilererror (ErrBuf);
}
return (Converted);
}
/* TBD: use version in ACPI CA main code base? */
/*******************************************************************************
*
* FUNCTION: UtStrtoul64
*
* PARAMETERS: String - Null terminated string
* Terminater - Where a pointer to the terminating byte is
* returned
* Base - Radix of the string
*
* RETURN: Converted value
*
* DESCRIPTION: Convert a string into an unsigned value.
*
******************************************************************************/
static ACPI_STATUS
UtStrtoul64 (
char *String,
UINT32 Base,
UINT64 *RetInteger)
{
UINT32 Index;
UINT32 Sign;
UINT64 ReturnValue = 0;
ACPI_STATUS Status = AE_OK;
*RetInteger = 0;
switch (Base)
{
case 0:
case 8:
case 10:
case 16:
break;
default:
/*
* The specified Base parameter is not in the domain of
* this function:
*/
return (AE_BAD_PARAMETER);
}
/* Skip over any white space in the buffer: */
while (isspace ((int) *String) || *String == '\t')
{
++String;
}
/*
* The buffer may contain an optional plus or minus sign.
* If it does, then skip over it but remember what is was:
*/
if (*String == '-')
{
Sign = NEGATIVE;
++String;
}
else if (*String == '+')
{
++String;
Sign = POSITIVE;
}
else
{
Sign = POSITIVE;
}
/*
* If the input parameter Base is zero, then we need to
* determine if it is octal, decimal, or hexadecimal:
*/
if (Base == 0)
{
if (*String == '0')
{
if (tolower ((int) *(++String)) == 'x')
{
Base = 16;
++String;
}
else
{
Base = 8;
}
}
else
{
Base = 10;
}
}
/*
* For octal and hexadecimal bases, skip over the leading
* 0 or 0x, if they are present.
*/
if (Base == 8 && *String == '0')
{
String++;
}
if (Base == 16 &&
*String == '0' &&
tolower ((int) *(++String)) == 'x')
{
String++;
}
/* Main loop: convert the string to an unsigned long */
while (*String)
{
if (isdigit ((int) *String))
{
Index = ((UINT8) *String) - '0';
}
else
{
Index = (UINT8) toupper ((int) *String);
if (isupper ((int) Index))
{
Index = Index - 'A' + 10;
}
else
{
goto ErrorExit;
}
}
if (Index >= Base)
{
goto ErrorExit;
}
/* Check to see if value is out of range: */
if (ReturnValue > ((ACPI_UINT64_MAX - (UINT64) Index) /
(UINT64) Base))
{
goto ErrorExit;
}
else
{
ReturnValue *= Base;
ReturnValue += Index;
}
++String;
}
/* If a minus sign was present, then "the conversion is negated": */
if (Sign == NEGATIVE)
{
ReturnValue = (ACPI_UINT32_MAX - ReturnValue) + 1;
}
*RetInteger = ReturnValue;
return (Status);
ErrorExit:
switch (Base)
{
case 8:
Status = AE_BAD_OCTAL_CONSTANT;
break;
case 10:
Status = AE_BAD_DECIMAL_CONSTANT;
break;
case 16:
Status = AE_BAD_HEX_CONSTANT;
break;
default:
/* Base validated above */
break;
}
return (Status);
}
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