| Current Path : /sys/contrib/dev/acpica/utilities/ |
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| Current File : //sys/contrib/dev/acpica/utilities/utmisc.c |
/*******************************************************************************
*
* Module Name: utmisc - common utility procedures
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2011, 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.
*/
#define __UTMISC_C__
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME ("utmisc")
/*******************************************************************************
*
* FUNCTION: AcpiUtValidateException
*
* PARAMETERS: Status - The ACPI_STATUS code to be formatted
*
* RETURN: A string containing the exception text. NULL if exception is
* not valid.
*
* DESCRIPTION: This function validates and translates an ACPI exception into
* an ASCII string.
*
******************************************************************************/
const char *
AcpiUtValidateException (
ACPI_STATUS Status)
{
UINT32 SubStatus;
const char *Exception = NULL;
ACPI_FUNCTION_ENTRY ();
/*
* Status is composed of two parts, a "type" and an actual code
*/
SubStatus = (Status & ~AE_CODE_MASK);
switch (Status & AE_CODE_MASK)
{
case AE_CODE_ENVIRONMENTAL:
if (SubStatus <= AE_CODE_ENV_MAX)
{
Exception = AcpiGbl_ExceptionNames_Env [SubStatus];
}
break;
case AE_CODE_PROGRAMMER:
if (SubStatus <= AE_CODE_PGM_MAX)
{
Exception = AcpiGbl_ExceptionNames_Pgm [SubStatus];
}
break;
case AE_CODE_ACPI_TABLES:
if (SubStatus <= AE_CODE_TBL_MAX)
{
Exception = AcpiGbl_ExceptionNames_Tbl [SubStatus];
}
break;
case AE_CODE_AML:
if (SubStatus <= AE_CODE_AML_MAX)
{
Exception = AcpiGbl_ExceptionNames_Aml [SubStatus];
}
break;
case AE_CODE_CONTROL:
if (SubStatus <= AE_CODE_CTRL_MAX)
{
Exception = AcpiGbl_ExceptionNames_Ctrl [SubStatus];
}
break;
default:
break;
}
return (ACPI_CAST_PTR (const char, Exception));
}
/*******************************************************************************
*
* FUNCTION: AcpiUtIsPciRootBridge
*
* PARAMETERS: Id - The HID/CID in string format
*
* RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
*
* DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
*
******************************************************************************/
BOOLEAN
AcpiUtIsPciRootBridge (
char *Id)
{
/*
* Check if this is a PCI root bridge.
* ACPI 3.0+: check for a PCI Express root also.
*/
if (!(ACPI_STRCMP (Id,
PCI_ROOT_HID_STRING)) ||
!(ACPI_STRCMP (Id,
PCI_EXPRESS_ROOT_HID_STRING)))
{
return (TRUE);
}
return (FALSE);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtIsAmlTable
*
* PARAMETERS: Table - An ACPI table
*
* RETURN: TRUE if table contains executable AML; FALSE otherwise
*
* DESCRIPTION: Check ACPI Signature for a table that contains AML code.
* Currently, these are DSDT,SSDT,PSDT. All other table types are
* data tables that do not contain AML code.
*
******************************************************************************/
BOOLEAN
AcpiUtIsAmlTable (
ACPI_TABLE_HEADER *Table)
{
/* These are the only tables that contain executable AML */
if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT) ||
ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_PSDT) ||
ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_SSDT))
{
return (TRUE);
}
return (FALSE);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtAllocateOwnerId
*
* PARAMETERS: OwnerId - Where the new owner ID is returned
*
* RETURN: Status
*
* DESCRIPTION: Allocate a table or method owner ID. The owner ID is used to
* track objects created by the table or method, to be deleted
* when the method exits or the table is unloaded.
*
******************************************************************************/
ACPI_STATUS
AcpiUtAllocateOwnerId (
ACPI_OWNER_ID *OwnerId)
{
UINT32 i;
UINT32 j;
UINT32 k;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (UtAllocateOwnerId);
/* Guard against multiple allocations of ID to the same location */
if (*OwnerId)
{
ACPI_ERROR ((AE_INFO, "Owner ID [0x%2.2X] already exists", *OwnerId));
return_ACPI_STATUS (AE_ALREADY_EXISTS);
}
/* Mutex for the global ID mask */
Status = AcpiUtAcquireMutex (ACPI_MTX_CACHES);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* Find a free owner ID, cycle through all possible IDs on repeated
* allocations. (ACPI_NUM_OWNERID_MASKS + 1) because first index may have
* to be scanned twice.
*/
for (i = 0, j = AcpiGbl_LastOwnerIdIndex;
i < (ACPI_NUM_OWNERID_MASKS + 1);
i++, j++)
{
if (j >= ACPI_NUM_OWNERID_MASKS)
{
j = 0; /* Wraparound to start of mask array */
}
for (k = AcpiGbl_NextOwnerIdOffset; k < 32; k++)
{
if (AcpiGbl_OwnerIdMask[j] == ACPI_UINT32_MAX)
{
/* There are no free IDs in this mask */
break;
}
if (!(AcpiGbl_OwnerIdMask[j] & (1 << k)))
{
/*
* Found a free ID. The actual ID is the bit index plus one,
* making zero an invalid Owner ID. Save this as the last ID
* allocated and update the global ID mask.
*/
AcpiGbl_OwnerIdMask[j] |= (1 << k);
AcpiGbl_LastOwnerIdIndex = (UINT8) j;
AcpiGbl_NextOwnerIdOffset = (UINT8) (k + 1);
/*
* Construct encoded ID from the index and bit position
*
* Note: Last [j].k (bit 255) is never used and is marked
* permanently allocated (prevents +1 overflow)
*/
*OwnerId = (ACPI_OWNER_ID) ((k + 1) + ACPI_MUL_32 (j));
ACPI_DEBUG_PRINT ((ACPI_DB_VALUES,
"Allocated OwnerId: %2.2X\n", (unsigned int) *OwnerId));
goto Exit;
}
}
AcpiGbl_NextOwnerIdOffset = 0;
}
/*
* All OwnerIds have been allocated. This typically should
* not happen since the IDs are reused after deallocation. The IDs are
* allocated upon table load (one per table) and method execution, and
* they are released when a table is unloaded or a method completes
* execution.
*
* If this error happens, there may be very deep nesting of invoked control
* methods, or there may be a bug where the IDs are not released.
*/
Status = AE_OWNER_ID_LIMIT;
ACPI_ERROR ((AE_INFO,
"Could not allocate new OwnerId (255 max), AE_OWNER_ID_LIMIT"));
Exit:
(void) AcpiUtReleaseMutex (ACPI_MTX_CACHES);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtReleaseOwnerId
*
* PARAMETERS: OwnerIdPtr - Pointer to a previously allocated OwnerID
*
* RETURN: None. No error is returned because we are either exiting a
* control method or unloading a table. Either way, we would
* ignore any error anyway.
*
* DESCRIPTION: Release a table or method owner ID. Valid IDs are 1 - 255
*
******************************************************************************/
void
AcpiUtReleaseOwnerId (
ACPI_OWNER_ID *OwnerIdPtr)
{
ACPI_OWNER_ID OwnerId = *OwnerIdPtr;
ACPI_STATUS Status;
UINT32 Index;
UINT32 Bit;
ACPI_FUNCTION_TRACE_U32 (UtReleaseOwnerId, OwnerId);
/* Always clear the input OwnerId (zero is an invalid ID) */
*OwnerIdPtr = 0;
/* Zero is not a valid OwnerID */
if (OwnerId == 0)
{
ACPI_ERROR ((AE_INFO, "Invalid OwnerId: 0x%2.2X", OwnerId));
return_VOID;
}
/* Mutex for the global ID mask */
Status = AcpiUtAcquireMutex (ACPI_MTX_CACHES);
if (ACPI_FAILURE (Status))
{
return_VOID;
}
/* Normalize the ID to zero */
OwnerId--;
/* Decode ID to index/offset pair */
Index = ACPI_DIV_32 (OwnerId);
Bit = 1 << ACPI_MOD_32 (OwnerId);
/* Free the owner ID only if it is valid */
if (AcpiGbl_OwnerIdMask[Index] & Bit)
{
AcpiGbl_OwnerIdMask[Index] ^= Bit;
}
else
{
ACPI_ERROR ((AE_INFO,
"Release of non-allocated OwnerId: 0x%2.2X", OwnerId + 1));
}
(void) AcpiUtReleaseMutex (ACPI_MTX_CACHES);
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: AcpiUtStrupr (strupr)
*
* PARAMETERS: SrcString - The source string to convert
*
* RETURN: None
*
* DESCRIPTION: Convert string to uppercase
*
* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
*
******************************************************************************/
void
AcpiUtStrupr (
char *SrcString)
{
char *String;
ACPI_FUNCTION_ENTRY ();
if (!SrcString)
{
return;
}
/* Walk entire string, uppercasing the letters */
for (String = SrcString; *String; String++)
{
*String = (char) ACPI_TOUPPER (*String);
}
return;
}
#ifdef ACPI_ASL_COMPILER
/*******************************************************************************
*
* FUNCTION: AcpiUtStrlwr (strlwr)
*
* PARAMETERS: SrcString - The source string to convert
*
* RETURN: None
*
* DESCRIPTION: Convert string to lowercase
*
* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
*
******************************************************************************/
void
AcpiUtStrlwr (
char *SrcString)
{
char *String;
ACPI_FUNCTION_ENTRY ();
if (!SrcString)
{
return;
}
/* Walk entire string, lowercasing the letters */
for (String = SrcString; *String; String++)
{
*String = (char) ACPI_TOLOWER (*String);
}
return;
}
#endif
/*******************************************************************************
*
* FUNCTION: AcpiUtPrintString
*
* PARAMETERS: String - Null terminated ASCII string
* MaxLength - Maximum output length
*
* RETURN: None
*
* DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
* sequences.
*
******************************************************************************/
void
AcpiUtPrintString (
char *String,
UINT8 MaxLength)
{
UINT32 i;
if (!String)
{
AcpiOsPrintf ("<\"NULL STRING PTR\">");
return;
}
AcpiOsPrintf ("\"");
for (i = 0; String[i] && (i < MaxLength); i++)
{
/* Escape sequences */
switch (String[i])
{
case 0x07:
AcpiOsPrintf ("\\a"); /* BELL */
break;
case 0x08:
AcpiOsPrintf ("\\b"); /* BACKSPACE */
break;
case 0x0C:
AcpiOsPrintf ("\\f"); /* FORMFEED */
break;
case 0x0A:
AcpiOsPrintf ("\\n"); /* LINEFEED */
break;
case 0x0D:
AcpiOsPrintf ("\\r"); /* CARRIAGE RETURN*/
break;
case 0x09:
AcpiOsPrintf ("\\t"); /* HORIZONTAL TAB */
break;
case 0x0B:
AcpiOsPrintf ("\\v"); /* VERTICAL TAB */
break;
case '\'': /* Single Quote */
case '\"': /* Double Quote */
case '\\': /* Backslash */
AcpiOsPrintf ("\\%c", (int) String[i]);
break;
default:
/* Check for printable character or hex escape */
if (ACPI_IS_PRINT (String[i]))
{
/* This is a normal character */
AcpiOsPrintf ("%c", (int) String[i]);
}
else
{
/* All others will be Hex escapes */
AcpiOsPrintf ("\\x%2.2X", (INT32) String[i]);
}
break;
}
}
AcpiOsPrintf ("\"");
if (i == MaxLength && String[i])
{
AcpiOsPrintf ("...");
}
}
/*******************************************************************************
*
* FUNCTION: AcpiUtDwordByteSwap
*
* PARAMETERS: Value - Value to be converted
*
* RETURN: UINT32 integer with bytes swapped
*
* DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
*
******************************************************************************/
UINT32
AcpiUtDwordByteSwap (
UINT32 Value)
{
union
{
UINT32 Value;
UINT8 Bytes[4];
} Out;
union
{
UINT32 Value;
UINT8 Bytes[4];
} In;
ACPI_FUNCTION_ENTRY ();
In.Value = Value;
Out.Bytes[0] = In.Bytes[3];
Out.Bytes[1] = In.Bytes[2];
Out.Bytes[2] = In.Bytes[1];
Out.Bytes[3] = In.Bytes[0];
return (Out.Value);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtSetIntegerWidth
*
* PARAMETERS: Revision From DSDT header
*
* RETURN: None
*
* DESCRIPTION: Set the global integer bit width based upon the revision
* of the DSDT. For Revision 1 and 0, Integers are 32 bits.
* For Revision 2 and above, Integers are 64 bits. Yes, this
* makes a difference.
*
******************************************************************************/
void
AcpiUtSetIntegerWidth (
UINT8 Revision)
{
if (Revision < 2)
{
/* 32-bit case */
AcpiGbl_IntegerBitWidth = 32;
AcpiGbl_IntegerNybbleWidth = 8;
AcpiGbl_IntegerByteWidth = 4;
}
else
{
/* 64-bit case (ACPI 2.0+) */
AcpiGbl_IntegerBitWidth = 64;
AcpiGbl_IntegerNybbleWidth = 16;
AcpiGbl_IntegerByteWidth = 8;
}
}
#ifdef ACPI_DEBUG_OUTPUT
/*******************************************************************************
*
* FUNCTION: AcpiUtDisplayInitPathname
*
* PARAMETERS: Type - Object type of the node
* ObjHandle - Handle whose pathname will be displayed
* Path - Additional path string to be appended.
* (NULL if no extra path)
*
* RETURN: ACPI_STATUS
*
* DESCRIPTION: Display full pathname of an object, DEBUG ONLY
*
******************************************************************************/
void
AcpiUtDisplayInitPathname (
UINT8 Type,
ACPI_NAMESPACE_NODE *ObjHandle,
char *Path)
{
ACPI_STATUS Status;
ACPI_BUFFER Buffer;
ACPI_FUNCTION_ENTRY ();
/* Only print the path if the appropriate debug level is enabled */
if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES))
{
return;
}
/* Get the full pathname to the node */
Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
Status = AcpiNsHandleToPathname (ObjHandle, &Buffer);
if (ACPI_FAILURE (Status))
{
return;
}
/* Print what we're doing */
switch (Type)
{
case ACPI_TYPE_METHOD:
AcpiOsPrintf ("Executing ");
break;
default:
AcpiOsPrintf ("Initializing ");
break;
}
/* Print the object type and pathname */
AcpiOsPrintf ("%-12s %s",
AcpiUtGetTypeName (Type), (char *) Buffer.Pointer);
/* Extra path is used to append names like _STA, _INI, etc. */
if (Path)
{
AcpiOsPrintf (".%s", Path);
}
AcpiOsPrintf ("\n");
ACPI_FREE (Buffer.Pointer);
}
#endif
/*******************************************************************************
*
* FUNCTION: AcpiUtValidAcpiChar
*
* PARAMETERS: Char - The character to be examined
* Position - Byte position (0-3)
*
* RETURN: TRUE if the character is valid, FALSE otherwise
*
* DESCRIPTION: Check for a valid ACPI character. Must be one of:
* 1) Upper case alpha
* 2) numeric
* 3) underscore
*
* We allow a '!' as the last character because of the ASF! table
*
******************************************************************************/
BOOLEAN
AcpiUtValidAcpiChar (
char Character,
UINT32 Position)
{
if (!((Character >= 'A' && Character <= 'Z') ||
(Character >= '0' && Character <= '9') ||
(Character == '_')))
{
/* Allow a '!' in the last position */
if (Character == '!' && Position == 3)
{
return (TRUE);
}
return (FALSE);
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtValidAcpiName
*
* PARAMETERS: Name - The name to be examined
*
* RETURN: TRUE if the name is valid, FALSE otherwise
*
* DESCRIPTION: Check for a valid ACPI name. Each character must be one of:
* 1) Upper case alpha
* 2) numeric
* 3) underscore
*
******************************************************************************/
BOOLEAN
AcpiUtValidAcpiName (
UINT32 Name)
{
UINT32 i;
ACPI_FUNCTION_ENTRY ();
for (i = 0; i < ACPI_NAME_SIZE; i++)
{
if (!AcpiUtValidAcpiChar ((ACPI_CAST_PTR (char, &Name))[i], i))
{
return (FALSE);
}
}
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtRepairName
*
* PARAMETERS: Name - The ACPI name to be repaired
*
* RETURN: Repaired version of the name
*
* DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
* return the new name. NOTE: the Name parameter must reside in
* read/write memory, cannot be a const.
*
* An ACPI Name must consist of valid ACPI characters. We will repair the name
* if necessary because we don't want to abort because of this, but we want
* all namespace names to be printable. A warning message is appropriate.
*
* This issue came up because there are in fact machines that exhibit
* this problem, and we want to be able to enable ACPI support for them,
* even though there are a few bad names.
*
******************************************************************************/
void
AcpiUtRepairName (
char *Name)
{
UINT32 i;
BOOLEAN FoundBadChar = FALSE;
ACPI_FUNCTION_NAME (UtRepairName);
/* Check each character in the name */
for (i = 0; i < ACPI_NAME_SIZE; i++)
{
if (AcpiUtValidAcpiChar (Name[i], i))
{
continue;
}
/*
* Replace a bad character with something printable, yet technically
* still invalid. This prevents any collisions with existing "good"
* names in the namespace.
*/
Name[i] = '*';
FoundBadChar = TRUE;
}
if (FoundBadChar)
{
/* Report warning only if in strict mode or debug mode */
if (!AcpiGbl_EnableInterpreterSlack)
{
ACPI_WARNING ((AE_INFO,
"Found bad character(s) in name, repaired: [%4.4s]\n", Name));
}
else
{
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Found bad character(s) in name, repaired: [%4.4s]\n", Name));
}
}
}
/*******************************************************************************
*
* FUNCTION: AcpiUtStrtoul64
*
* PARAMETERS: String - Null terminated string
* Base - Radix of the string: 16 or ACPI_ANY_BASE;
* ACPI_ANY_BASE means 'in behalf of ToInteger'
* RetInteger - Where the converted integer is returned
*
* RETURN: Status and Converted value
*
* DESCRIPTION: Convert a string into an unsigned value. Performs either a
* 32-bit or 64-bit conversion, depending on the current mode
* of the interpreter.
* NOTE: Does not support Octal strings, not needed.
*
******************************************************************************/
ACPI_STATUS
AcpiUtStrtoul64 (
char *String,
UINT32 Base,
UINT64 *RetInteger)
{
UINT32 ThisDigit = 0;
UINT64 ReturnValue = 0;
UINT64 Quotient;
UINT64 Dividend;
UINT32 ToIntegerOp = (Base == ACPI_ANY_BASE);
UINT32 Mode32 = (AcpiGbl_IntegerByteWidth == 4);
UINT8 ValidDigits = 0;
UINT8 SignOf0x = 0;
UINT8 Term = 0;
ACPI_FUNCTION_TRACE_STR (UtStroul64, String);
switch (Base)
{
case ACPI_ANY_BASE:
case 16:
break;
default:
/* Invalid Base */
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
if (!String)
{
goto ErrorExit;
}
/* Skip over any white space in the buffer */
while ((*String) && (ACPI_IS_SPACE (*String) || *String == '\t'))
{
String++;
}
if (ToIntegerOp)
{
/*
* Base equal to ACPI_ANY_BASE means 'ToInteger operation case'.
* We need to determine if it is decimal or hexadecimal.
*/
if ((*String == '0') && (ACPI_TOLOWER (*(String + 1)) == 'x'))
{
SignOf0x = 1;
Base = 16;
/* Skip over the leading '0x' */
String += 2;
}
else
{
Base = 10;
}
}
/* Any string left? Check that '0x' is not followed by white space. */
if (!(*String) || ACPI_IS_SPACE (*String) || *String == '\t')
{
if (ToIntegerOp)
{
goto ErrorExit;
}
else
{
goto AllDone;
}
}
/*
* Perform a 32-bit or 64-bit conversion, depending upon the current
* execution mode of the interpreter
*/
Dividend = (Mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX;
/* Main loop: convert the string to a 32- or 64-bit integer */
while (*String)
{
if (ACPI_IS_DIGIT (*String))
{
/* Convert ASCII 0-9 to Decimal value */
ThisDigit = ((UINT8) *String) - '0';
}
else if (Base == 10)
{
/* Digit is out of range; possible in ToInteger case only */
Term = 1;
}
else
{
ThisDigit = (UINT8) ACPI_TOUPPER (*String);
if (ACPI_IS_XDIGIT ((char) ThisDigit))
{
/* Convert ASCII Hex char to value */
ThisDigit = ThisDigit - 'A' + 10;
}
else
{
Term = 1;
}
}
if (Term)
{
if (ToIntegerOp)
{
goto ErrorExit;
}
else
{
break;
}
}
else if ((ValidDigits == 0) && (ThisDigit == 0) && !SignOf0x)
{
/* Skip zeros */
String++;
continue;
}
ValidDigits++;
if (SignOf0x && ((ValidDigits > 16) || ((ValidDigits > 8) && Mode32)))
{
/*
* This is ToInteger operation case.
* No any restrictions for string-to-integer conversion,
* see ACPI spec.
*/
goto ErrorExit;
}
/* Divide the digit into the correct position */
(void) AcpiUtShortDivide ((Dividend - (UINT64) ThisDigit),
Base, &Quotient, NULL);
if (ReturnValue > Quotient)
{
if (ToIntegerOp)
{
goto ErrorExit;
}
else
{
break;
}
}
ReturnValue *= Base;
ReturnValue += ThisDigit;
String++;
}
/* All done, normal exit */
AllDone:
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n",
ACPI_FORMAT_UINT64 (ReturnValue)));
*RetInteger = ReturnValue;
return_ACPI_STATUS (AE_OK);
ErrorExit:
/* Base was set/validated above */
if (Base == 10)
{
return_ACPI_STATUS (AE_BAD_DECIMAL_CONSTANT);
}
else
{
return_ACPI_STATUS (AE_BAD_HEX_CONSTANT);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiUtCreateUpdateStateAndPush
*
* PARAMETERS: Object - Object to be added to the new state
* Action - Increment/Decrement
* StateList - List the state will be added to
*
* RETURN: Status
*
* DESCRIPTION: Create a new state and push it
*
******************************************************************************/
ACPI_STATUS
AcpiUtCreateUpdateStateAndPush (
ACPI_OPERAND_OBJECT *Object,
UINT16 Action,
ACPI_GENERIC_STATE **StateList)
{
ACPI_GENERIC_STATE *State;
ACPI_FUNCTION_ENTRY ();
/* Ignore null objects; these are expected */
if (!Object)
{
return (AE_OK);
}
State = AcpiUtCreateUpdateState (Object, Action);
if (!State)
{
return (AE_NO_MEMORY);
}
AcpiUtPushGenericState (StateList, State);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtWalkPackageTree
*
* PARAMETERS: SourceObject - The package to walk
* TargetObject - Target object (if package is being copied)
* WalkCallback - Called once for each package element
* Context - Passed to the callback function
*
* RETURN: Status
*
* DESCRIPTION: Walk through a package
*
******************************************************************************/
ACPI_STATUS
AcpiUtWalkPackageTree (
ACPI_OPERAND_OBJECT *SourceObject,
void *TargetObject,
ACPI_PKG_CALLBACK WalkCallback,
void *Context)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *StateList = NULL;
ACPI_GENERIC_STATE *State;
UINT32 ThisIndex;
ACPI_OPERAND_OBJECT *ThisSourceObj;
ACPI_FUNCTION_TRACE (UtWalkPackageTree);
State = AcpiUtCreatePkgState (SourceObject, TargetObject, 0);
if (!State)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
while (State)
{
/* Get one element of the package */
ThisIndex = State->Pkg.Index;
ThisSourceObj = (ACPI_OPERAND_OBJECT *)
State->Pkg.SourceObject->Package.Elements[ThisIndex];
/*
* Check for:
* 1) An uninitialized package element. It is completely
* legal to declare a package and leave it uninitialized
* 2) Not an internal object - can be a namespace node instead
* 3) Any type other than a package. Packages are handled in else
* case below.
*/
if ((!ThisSourceObj) ||
(ACPI_GET_DESCRIPTOR_TYPE (ThisSourceObj) != ACPI_DESC_TYPE_OPERAND) ||
(ThisSourceObj->Common.Type != ACPI_TYPE_PACKAGE))
{
Status = WalkCallback (ACPI_COPY_TYPE_SIMPLE, ThisSourceObj,
State, Context);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
State->Pkg.Index++;
while (State->Pkg.Index >= State->Pkg.SourceObject->Package.Count)
{
/*
* We've handled all of the objects at this level, This means
* that we have just completed a package. That package may
* have contained one or more packages itself.
*
* Delete this state and pop the previous state (package).
*/
AcpiUtDeleteGenericState (State);
State = AcpiUtPopGenericState (&StateList);
/* Finished when there are no more states */
if (!State)
{
/*
* We have handled all of the objects in the top level
* package just add the length of the package objects
* and exit
*/
return_ACPI_STATUS (AE_OK);
}
/*
* Go back up a level and move the index past the just
* completed package object.
*/
State->Pkg.Index++;
}
}
else
{
/* This is a subobject of type package */
Status = WalkCallback (ACPI_COPY_TYPE_PACKAGE, ThisSourceObj,
State, Context);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* Push the current state and create a new one
* The callback above returned a new target package object.
*/
AcpiUtPushGenericState (&StateList, State);
State = AcpiUtCreatePkgState (ThisSourceObj,
State->Pkg.ThisTargetObj, 0);
if (!State)
{
/* Free any stacked Update State objects */
while (StateList)
{
State = AcpiUtPopGenericState (&StateList);
AcpiUtDeleteGenericState (State);
}
return_ACPI_STATUS (AE_NO_MEMORY);
}
}
}
/* We should never get here */
return_ACPI_STATUS (AE_AML_INTERNAL);
}