d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
895f26a936
freebsd-dev/sys/contrib/dev/acpica/compiler/aslutils.c
Jung-uk Kim efcc2a3054 Merge ACPICA 20130117.
2013-01-17 23:56:43 +00:00

1111 lines
28 KiB
C
Raw Blame History

/******************************************************************************
*
* Module Name: aslutils -- compiler utilities
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2013, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <contrib/dev/acpica/compiler/aslcompiler.h>
#include "aslcompiler.y.h"
#include <contrib/dev/acpica/include/acdisasm.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acapps.h>
#define _COMPONENT ACPI_COMPILER
ACPI_MODULE_NAME ("aslutils")
/* Local prototypes */
static void
UtPadNameWithUnderscores (
char *NameSeg,
char *PaddedNameSeg);
static void
UtAttachNameseg (
ACPI_PARSE_OBJECT *Op,
char *Name);
/*******************************************************************************
*
* FUNCTION: UtDisplaySupportedTables
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Print all supported ACPI table names.
*
******************************************************************************/
#define ACPI_TABLE_HELP_FORMAT "%8u) %s %s\n"
void
UtDisplaySupportedTables (
void)
{
ACPI_DMTABLE_DATA *TableData;
UINT32 i;
printf ("\nACPI tables supported by iASL version %8.8X:\n"
" (Compiler, Disassembler, Template Generator)\n\n",
ACPI_CA_VERSION);
/* Special tables */
printf (" Special tables and AML tables:\n");
printf (ACPI_TABLE_HELP_FORMAT, 1, ACPI_RSDP_NAME, "Root System Description Pointer");
printf (ACPI_TABLE_HELP_FORMAT, 2, ACPI_SIG_FACS, "Firmware ACPI Control Structure");
printf (ACPI_TABLE_HELP_FORMAT, 3, ACPI_SIG_DSDT, "Differentiated System Description Table");
printf (ACPI_TABLE_HELP_FORMAT, 4, ACPI_SIG_SSDT, "Secondary System Description Table");
/* All data tables with common table header */
printf ("\n Standard ACPI data tables:\n");
for (TableData = AcpiDmTableData, i = 5; TableData->Signature; TableData++, i++)
{
printf (ACPI_TABLE_HELP_FORMAT, i, TableData->Signature, TableData->Name);
}
}
/*******************************************************************************
*
* FUNCTION: UtDisplayConstantOpcodes
*
* 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 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) AslHexLookup[(RawByte >> 4) & 0xF];
Buffer[3] = (UINT8) AslHexLookup[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) AslHexLookup[(RawByte >> 4) & 0xF];
Buffer[2] = (UINT8) AslHexLookup[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 - Parse op to be named.
*
* 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: UtDisplaySummary
*
* PARAMETERS: FileID - ID of outpout file
*
* RETURN: None
*
* DESCRIPTION: Display compilation statistics
*
******************************************************************************/
void
UtDisplaySummary (
UINT32 FileId)
{
UINT32 i;
if (FileId != ASL_FILE_STDOUT)
{
/* Compiler name and version number */
FlPrintFile (FileId, "%s version %X%s\n\n",
ASL_COMPILER_NAME, (UINT32) ACPI_CA_VERSION, ACPI_WIDTH);
}
/* Summary of main input and output files */
if (Gbl_FileType == ASL_INPUT_TYPE_ASCII_DATA)
{
FlPrintFile (FileId,
"%-14s %s - %u lines, %u bytes, %u fields\n",
"Table Input:",
Gbl_Files[ASL_FILE_INPUT].Filename, Gbl_CurrentLineNumber,
Gbl_InputByteCount, Gbl_InputFieldCount);
if ((Gbl_ExceptionCount[ASL_ERROR] == 0) || (Gbl_IgnoreErrors))
{
FlPrintFile (FileId,
"%-14s %s - %u bytes\n",
"Binary Output:",
Gbl_Files[ASL_FILE_AML_OUTPUT].Filename, Gbl_TableLength);
}
}
else
{
FlPrintFile (FileId,
"%-14s %s - %u lines, %u bytes, %u keywords\n",
"ASL Input:",
Gbl_Files[ASL_FILE_INPUT].Filename, Gbl_CurrentLineNumber,
Gbl_InputByteCount, TotalKeywords);
/* AML summary */
if ((Gbl_ExceptionCount[ASL_ERROR] == 0) || (Gbl_IgnoreErrors))
{
FlPrintFile (FileId,
"%-14s %s - %u bytes, %u named objects, %u executable opcodes\n",
"AML Output:",
Gbl_Files[ASL_FILE_AML_OUTPUT].Filename, Gbl_TableLength,
TotalNamedObjects, TotalExecutableOpcodes);
}
}
/* Display summary of any optional files */
for (i = ASL_FILE_SOURCE_OUTPUT; i <= ASL_MAX_FILE_TYPE; i++)
{
if (!Gbl_Files[i].Filename || !Gbl_Files[i].Handle)
{
continue;
}
/* .SRC is a temp file unless specifically requested */
if ((i == ASL_FILE_SOURCE_OUTPUT) && (!Gbl_SourceOutputFlag))
{
continue;
}
/* .I is a temp file unless specifically requested */
if ((i == ASL_FILE_PREPROCESSOR) && (!Gbl_PreprocessorOutputFlag))
{
continue;
}
FlPrintFile (FileId, "%14s %s - %u bytes\n",
Gbl_Files[i].ShortDescription,
Gbl_Files[i].Filename, FlGetFileSize (i));
}
/* Error summary */
FlPrintFile (FileId,
"\nCompilation 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: UtCheckIntegerRange
*
* 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)
{
if (!Op)
{
return (NULL);
}
if ((Op->Asl.Value.Integer < LowValue) ||
(Op->Asl.Value.Integer > HighValue))
{
sprintf (MsgBuffer, "0x%X, allowable: 0x%X-0x%X",
(UINT32) Op->Asl.Value.Integer, LowValue, HighValue);
AslError (ASL_ERROR, ASL_MSG_RANGE, Op, MsgBuffer);
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: UtExpandLineBuffers
*
* PARAMETERS: None. Updates global line buffer pointers.
*
* RETURN: None. Reallocates the global line buffers
*
* DESCRIPTION: Called if the current line buffer becomes filled. Reallocates
* all global line buffers and updates Gbl_LineBufferSize. NOTE:
* Also used for the initial allocation of the buffers, when
* all of the buffer pointers are NULL. Initial allocations are
* of size ASL_DEFAULT_LINE_BUFFER_SIZE
*
*****************************************************************************/
void
UtExpandLineBuffers (
void)
{
UINT32 NewSize;
/* Attempt to double the size of all line buffers */
NewSize = Gbl_LineBufferSize * 2;
if (Gbl_CurrentLineBuffer)
{
DbgPrint (ASL_DEBUG_OUTPUT,"Increasing line buffer size from %u to %u\n",
Gbl_LineBufferSize, NewSize);
}
Gbl_CurrentLineBuffer = realloc (Gbl_CurrentLineBuffer, NewSize);
Gbl_LineBufPtr = Gbl_CurrentLineBuffer;
if (!Gbl_CurrentLineBuffer)
{
goto ErrorExit;
}
Gbl_MainTokenBuffer = realloc (Gbl_MainTokenBuffer, NewSize);
if (!Gbl_MainTokenBuffer)
{
goto ErrorExit;
}
Gbl_MacroTokenBuffer = realloc (Gbl_MacroTokenBuffer, NewSize);
if (!Gbl_MacroTokenBuffer)
{
goto ErrorExit;
}
Gbl_ExpressionTokenBuffer = realloc (Gbl_ExpressionTokenBuffer, NewSize);
if (!Gbl_ExpressionTokenBuffer)
{
goto ErrorExit;
}
Gbl_LineBufferSize = NewSize;
return;
/* On error above, simply issue error messages and abort, cannot continue */
ErrorExit:
printf ("Could not increase line buffer size from %u to %u\n",
Gbl_LineBufferSize, Gbl_LineBufferSize * 2);
AslError (ASL_ERROR, ASL_MSG_BUFFER_ALLOCATION,
NULL, NULL);
AslAbort ();
}
/*******************************************************************************
*
* 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 (ACPI_IS_ROOT_PREFIX (*Name) ||
ACPI_IS_PARENT_PREFIX (*Name))
{
Name++;
}
/* Remaining string should be one single nameseg */
UtPadNameWithUnderscores (Name, PaddedNameSeg);
}
ACPI_MOVE_NAME (Op->Asl.NameSeg, PaddedNameSeg);
}
/*******************************************************************************
*
* 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.
*
******************************************************************************/
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);
}
Reference in New Issue View Git Blame Copy Permalink