ACPI_STATUS
AcpiExOpcode_2A_2T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc1 = NULL;
ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_2T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
/* Execute the opcode */
switch (WalkState->Opcode)
{
case AML_DIVIDE_OP:
/* Divide (Dividend, Divisor, RemainderResult QuotientResult) */
ReturnDesc1 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc1)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
ReturnDesc2 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc2)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Quotient to ReturnDesc1, remainder to ReturnDesc2 */
Status = AcpiUtDivide (Operand[0]->Integer.Value,
Operand[1]->Integer.Value,
&ReturnDesc1->Integer.Value,
&ReturnDesc2->Integer.Value);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
/* Store the results to the target reference operands */
Status = AcpiExStore (ReturnDesc2, Operand[2], WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
Status = AcpiExStore (ReturnDesc1, Operand[3], WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
Cleanup:
/*
* Since the remainder is not returned indirectly, remove a reference to
* it. Only the quotient is returned indirectly.
*/
AcpiUtRemoveReference (ReturnDesc2);
if (ACPI_FAILURE (Status))
{
/* Delete the return object */
AcpiUtRemoveReference (ReturnDesc1);
}
/* Save return object (the remainder) on success */
else
{
WalkState->ResultObj = ReturnDesc1;
}
return_ACPI_STATUS (Status);
}
acpi_status
acpi_ex_opcode_6A_0T_1R (
struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
acpi_status status = AE_OK;
u32 index;
union acpi_operand_object *this_element;
ACPI_FUNCTION_TRACE_STR ("ex_opcode_6A_0T_1R", acpi_ps_get_opcode_name (walk_state->opcode));
switch (walk_state->opcode) {
case AML_MATCH_OP:
/*
* Match (search_package[0], match_op1[1], match_object1[2],
* match_op2[3], match_object2[4], start_index[5])
*/
/* Validate match comparison sub-opcodes */
if ((operand[1]->integer.value > MAX_MATCH_OPERATOR) ||
(operand[3]->integer.value > MAX_MATCH_OPERATOR)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "operation encoding out of range\n"));
status = AE_AML_OPERAND_VALUE;
goto cleanup;
}
index = (u32) operand[5]->integer.value;
if (index >= (u32) operand[0]->package.count) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Index beyond package end\n"));
status = AE_AML_PACKAGE_LIMIT;
goto cleanup;
}
return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Default return value if no match found */
return_desc->integer.value = ACPI_INTEGER_MAX;
/*
* Examine each element until a match is found. Within the loop,
* "continue" signifies that the current element does not match
* and the next should be examined.
*
* Upon finding a match, the loop will terminate via "break" at
* the bottom. If it terminates "normally", match_value will be -1
* (its initial value) indicating that no match was found. When
* returned as a Number, this will produce the Ones value as specified.
*/
for ( ; index < operand[0]->package.count; index++) {
this_element = operand[0]->package.elements[index];
/*
* Treat any NULL or non-numeric elements as non-matching.
*/
if (!this_element ||
ACPI_GET_OBJECT_TYPE (this_element) != ACPI_TYPE_INTEGER) {
continue;
}
/*
* "continue" (proceed to next iteration of enclosing
* "for" loop) signifies a non-match.
*/
if (!acpi_ex_do_match ((u32) operand[1]->integer.value,
this_element->integer.value, operand[2]->integer.value)) {
continue;
}
if (!acpi_ex_do_match ((u32) operand[3]->integer.value,
this_element->integer.value, operand[4]->integer.value)) {
continue;
}
/* Match found: Index is the return value */
return_desc->integer.value = index;
break;
}
break;
case AML_LOAD_TABLE_OP:
status = acpi_ex_load_table_op (walk_state, &return_desc);
break;
default:
ACPI_REPORT_ERROR (("acpi_ex_opcode_3A_0T_0R: Unknown opcode %X\n",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
walk_state->result_obj = return_desc;
cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (status)) {
acpi_ut_remove_reference (return_desc);
}
return_ACPI_STATUS (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_strtoul64
*
* PARAMETERS: string - Null terminated input string,
* must be a valid pointer
* return_value - Where the converted integer is
* returned. Must be a valid pointer
*
* RETURN: Status and converted integer. Returns an exception on a
* 64-bit numeric overflow
*
* DESCRIPTION: Convert a string into an unsigned integer. Always performs a
* full 64-bit conversion, regardless of the current global
* integer width. Supports Decimal, Hex, and Octal strings.
*
* Current users of this function:
*
* iASL - Preprocessor (constants and math expressions)
* iASL - Main ASL parser, conversion of ASL constants to integers
* iASL - Data Table Compiler parser (constants and math expressions)
* interpreter - Repair code for return values from predefined names
* acpi_dump - ACPI table physical addresses
* acpi_exec - Support for namespace overrides
*
******************************************************************************/
acpi_status acpi_ut_strtoul64(char *string, u64 *return_value)
{
acpi_status status = AE_OK;
u8 original_bit_width;
u32 base = 10; /* Default is decimal */
ACPI_FUNCTION_TRACE_STR(ut_strtoul64, string);
*return_value = 0;
/* A NULL return string returns a value of zero */
if (*string == 0) {
return_ACPI_STATUS(AE_OK);
}
if (!acpi_ut_remove_whitespace(&string)) {
return_ACPI_STATUS(AE_OK);
}
/*
* 1) Check for a hex constant. A "0x" prefix indicates base 16.
*/
if (acpi_ut_detect_hex_prefix(&string)) {
base = 16;
}
/*
* 2) Check for an octal constant, defined to be a leading zero
* followed by sequence of octal digits (0-7)
*/
else if (acpi_ut_detect_octal_prefix(&string)) {
base = 8;
}
if (!acpi_ut_remove_leading_zeros(&string)) {
return_ACPI_STATUS(AE_OK); /* Return value 0 */
}
/*
* Force a full 64-bit conversion. The caller (usually iASL) must
* check for a 32-bit overflow later as necessary (If current mode
* is 32-bit, meaning a 32-bit DSDT).
*/
original_bit_width = acpi_gbl_integer_bit_width;
acpi_gbl_integer_bit_width = 64;
/*
* Perform the base 8, 10, or 16 conversion. A 64-bit numeric overflow
* will return an exception (to allow iASL to flag the statement).
*/
switch (base) {
case 8:
status = acpi_ut_convert_octal_string(string, return_value);
break;
case 10:
status = acpi_ut_convert_decimal_string(string, return_value);
break;
case 16:
default:
status = acpi_ut_convert_hex_string(string, return_value);
break;
}
/* Only possible exception from above is a 64-bit overflow */
acpi_gbl_integer_bit_width = original_bit_width;
return_ACPI_STATUS(status);
}
ACPI_STATUS
AcpiExOpcode_1A_0T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *TempDesc;
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
ACPI_STATUS Status = AE_OK;
UINT32 Type;
ACPI_INTEGER Value;
ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
/* Examine the AML opcode */
switch (WalkState->Opcode)
{
case AML_LNOT_OP: /* LNot (Operand) */
ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) 0);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Set result to ONES (TRUE) if Value == 0. Note:
* ReturnDesc->Integer.Value is initially == 0 (FALSE) from above.
*/
if (!Operand[0]->Integer.Value)
{
ReturnDesc->Integer.Value = ACPI_INTEGER_MAX;
}
break;
case AML_DECREMENT_OP: /* Decrement (Operand) */
case AML_INCREMENT_OP: /* Increment (Operand) */
/*
* Create a new integer. Can't just get the base integer and
* increment it because it may be an Arg or Field.
*/
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Since we are expecting a Reference operand, it can be either a
* NS Node or an internal object.
*/
TempDesc = Operand[0];
if (ACPI_GET_DESCRIPTOR_TYPE (TempDesc) == ACPI_DESC_TYPE_OPERAND)
{
/* Internal reference object - prevent deletion */
AcpiUtAddReference (TempDesc);
}
/*
* Convert the Reference operand to an Integer (This removes a
* reference on the Operand[0] object)
*
* NOTE: We use LNOT_OP here in order to force resolution of the
* reference operand to an actual integer.
*/
Status = AcpiExResolveOperands (AML_LNOT_OP, &TempDesc, WalkState);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"While resolving operands for [%s]",
AcpiPsGetOpcodeName (WalkState->Opcode)));
goto Cleanup;
}
/*
* TempDesc is now guaranteed to be an Integer object --
* Perform the actual increment or decrement
*/
if (WalkState->Opcode == AML_INCREMENT_OP)
{
ReturnDesc->Integer.Value = TempDesc->Integer.Value +1;
}
else
{
ReturnDesc->Integer.Value = TempDesc->Integer.Value -1;
}
/* Finished with this Integer object */
AcpiUtRemoveReference (TempDesc);
/*
* Store the result back (indirectly) through the original
* Reference object
*/
Status = AcpiExStore (ReturnDesc, Operand[0], WalkState);
break;
case AML_TYPE_OP: /* ObjectType (SourceObject) */
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value. For example, we don't
* want to resolve a FieldUnit to its value, we want the actual
* FieldUnit object.
*/
/* Get the type of the base object */
Status = AcpiExResolveMultiple (WalkState, Operand[0], &Type, NULL);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Allocate a descriptor to hold the type. */
ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) Type);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
break;
case AML_SIZE_OF_OP: /* SizeOf (SourceObject) */
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value.
*/
/* Get the base object */
Status = AcpiExResolveMultiple (WalkState,
Operand[0], &Type, &TempDesc);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/*
* The type of the base object must be integer, buffer, string, or
* package. All others are not supported.
*
* NOTE: Integer is not specifically supported by the ACPI spec,
* but is supported implicitly via implicit operand conversion.
* rather than bother with conversion, we just use the byte width
* global (4 or 8 bytes).
*/
switch (Type)
{
case ACPI_TYPE_INTEGER:
Value = AcpiGbl_IntegerByteWidth;
break;
case ACPI_TYPE_STRING:
Value = TempDesc->String.Length;
break;
case ACPI_TYPE_BUFFER:
/* Buffer arguments may not be evaluated at this point */
Status = AcpiDsGetBufferArguments (TempDesc);
Value = TempDesc->Buffer.Length;
break;
case ACPI_TYPE_PACKAGE:
/* Package arguments may not be evaluated at this point */
Status = AcpiDsGetPackageArguments (TempDesc);
Value = TempDesc->Package.Count;
break;
default:
ACPI_ERROR ((AE_INFO,
"Operand must be Buffer/Integer/String/Package - found type %s",
AcpiUtGetTypeName (Type)));
Status = AE_AML_OPERAND_TYPE;
goto Cleanup;
}
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/*
* Now that we have the size of the object, create a result
* object to hold the value
*/
ReturnDesc = AcpiUtCreateIntegerObject (Value);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
break;
case AML_REF_OF_OP: /* RefOf (SourceObject) */
Status = AcpiExGetObjectReference (Operand[0], &ReturnDesc, WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
break;
case AML_DEREF_OF_OP: /* DerefOf (ObjReference | String) */
/* Check for a method local or argument, or standalone String */
if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED)
{
TempDesc = AcpiNsGetAttachedObject (
(ACPI_NAMESPACE_NODE *) Operand[0]);
if (TempDesc &&
((TempDesc->Common.Type == ACPI_TYPE_STRING) ||
(TempDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE)))
{
Operand[0] = TempDesc;
AcpiUtAddReference (TempDesc);
}
else
{
Status = AE_AML_OPERAND_TYPE;
goto Cleanup;
}
}
else
{
switch ((Operand[0])->Common.Type)
{
case ACPI_TYPE_LOCAL_REFERENCE:
/*
* This is a DerefOf (LocalX | ArgX)
*
* Must resolve/dereference the local/arg reference first
*/
switch (Operand[0]->Reference.Class)
{
case ACPI_REFCLASS_LOCAL:
case ACPI_REFCLASS_ARG:
/* Set Operand[0] to the value of the local/arg */
Status = AcpiDsMethodDataGetValue (
Operand[0]->Reference.Class,
Operand[0]->Reference.Value,
WalkState, &TempDesc);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/*
* Delete our reference to the input object and
* point to the object just retrieved
*/
AcpiUtRemoveReference (Operand[0]);
Operand[0] = TempDesc;
break;
case ACPI_REFCLASS_REFOF:
/* Get the object to which the reference refers */
TempDesc = Operand[0]->Reference.Object;
AcpiUtRemoveReference (Operand[0]);
Operand[0] = TempDesc;
break;
default:
/* Must be an Index op - handled below */
break;
}
break;
case ACPI_TYPE_STRING:
break;
default:
Status = AE_AML_OPERAND_TYPE;
goto Cleanup;
}
}
if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) != ACPI_DESC_TYPE_NAMED)
{
if ((Operand[0])->Common.Type == ACPI_TYPE_STRING)
{
/*
* This is a DerefOf (String). The string is a reference
* to a named ACPI object.
*
* 1) Find the owning Node
* 2) Dereference the node to an actual object. Could be a
* Field, so we need to resolve the node to a value.
*/
Status = AcpiNsGetNode (WalkState->ScopeInfo->Scope.Node,
Operand[0]->String.Pointer,
ACPI_NS_SEARCH_PARENT,
ACPI_CAST_INDIRECT_PTR (
ACPI_NAMESPACE_NODE, &ReturnDesc));
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
Status = AcpiExResolveNodeToValue (
ACPI_CAST_INDIRECT_PTR (
ACPI_NAMESPACE_NODE, &ReturnDesc),
WalkState);
goto Cleanup;
}
}
/* Operand[0] may have changed from the code above */
if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED)
{
/*
* This is a DerefOf (ObjectReference)
* Get the actual object from the Node (This is the dereference).
* This case may only happen when a LocalX or ArgX is
* dereferenced above.
*/
ReturnDesc = AcpiNsGetAttachedObject (
(ACPI_NAMESPACE_NODE *) Operand[0]);
AcpiUtAddReference (ReturnDesc);
}
else
{
/*
* This must be a reference object produced by either the
* Index() or RefOf() operator
*/
switch (Operand[0]->Reference.Class)
{
case ACPI_REFCLASS_INDEX:
/*
* The target type for the Index operator must be
* either a Buffer or a Package
*/
switch (Operand[0]->Reference.TargetType)
{
case ACPI_TYPE_BUFFER_FIELD:
TempDesc = Operand[0]->Reference.Object;
/*
* Create a new object that contains one element of the
* buffer -- the element pointed to by the index.
*
* NOTE: index into a buffer is NOT a pointer to a
* sub-buffer of the main buffer, it is only a pointer to a
* single element (byte) of the buffer!
*
* Since we are returning the value of the buffer at the
* indexed location, we don't need to add an additional
* reference to the buffer itself.
*/
ReturnDesc = AcpiUtCreateIntegerObject ((UINT64)
TempDesc->Buffer.Pointer[Operand[0]->Reference.Value]);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
break;
case ACPI_TYPE_PACKAGE:
/*
* Return the referenced element of the package. We must
* add another reference to the referenced object, however.
*/
ReturnDesc = *(Operand[0]->Reference.Where);
if (ReturnDesc)
{
AcpiUtAddReference (ReturnDesc);
}
break;
default:
ACPI_ERROR ((AE_INFO,
"Unknown Index TargetType %X in reference object %p",
Operand[0]->Reference.TargetType, Operand[0]));
Status = AE_AML_OPERAND_TYPE;
goto Cleanup;
}
break;
case ACPI_REFCLASS_REFOF:
ReturnDesc = Operand[0]->Reference.Object;
if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) ==
ACPI_DESC_TYPE_NAMED)
{
ReturnDesc = AcpiNsGetAttachedObject (
(ACPI_NAMESPACE_NODE *) ReturnDesc);
}
/* Add another reference to the object! */
AcpiUtAddReference (ReturnDesc);
break;
default:
ACPI_ERROR ((AE_INFO,
"Unknown class in reference(%p) - %2.2X",
Operand[0], Operand[0]->Reference.Class));
Status = AE_TYPE;
goto Cleanup;
}
}
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
Cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ReturnDesc);
}
/* Save return object on success */
else
{
WalkState->ResultObj = ReturnDesc;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExOpcode_3A_1T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
char *Buffer = NULL;
ACPI_STATUS Status = AE_OK;
UINT64 Index;
ACPI_SIZE Length;
ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_1T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
switch (WalkState->Opcode)
{
case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
/*
* Create the return object. The Source operand is guaranteed to be
* either a String or a Buffer, so just use its type.
*/
ReturnDesc = AcpiUtCreateInternalObject (
(Operand[0])->Common.Type);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Get the Integer values from the objects */
Index = Operand[1]->Integer.Value;
Length = (ACPI_SIZE) Operand[2]->Integer.Value;
/*
* If the index is beyond the length of the String/Buffer, or if the
* requested length is zero, return a zero-length String/Buffer
*/
if (Index >= Operand[0]->String.Length)
{
Length = 0;
}
/* Truncate request if larger than the actual String/Buffer */
else if ((Index + Length) > Operand[0]->String.Length)
{
Length = (ACPI_SIZE) Operand[0]->String.Length -
(ACPI_SIZE) Index;
}
/* Strings always have a sub-pointer, not so for buffers */
switch ((Operand[0])->Common.Type)
{
case ACPI_TYPE_STRING:
/* Always allocate a new buffer for the String */
Buffer = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) Length + 1);
if (!Buffer)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
break;
case ACPI_TYPE_BUFFER:
/* If the requested length is zero, don't allocate a buffer */
if (Length > 0)
{
/* Allocate a new buffer for the Buffer */
Buffer = ACPI_ALLOCATE_ZEROED (Length);
if (!Buffer)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
}
break;
default: /* Should not happen */
Status = AE_AML_OPERAND_TYPE;
goto Cleanup;
}
if (Buffer)
{
/* We have a buffer, copy the portion requested */
ACPI_MEMCPY (Buffer, Operand[0]->String.Pointer + Index,
Length);
}
/* Set the length of the new String/Buffer */
ReturnDesc->String.Pointer = Buffer;
ReturnDesc->String.Length = (UINT32) Length;
/* Mark buffer initialized */
ReturnDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
/* Store the result in the target */
Status = AcpiExStore (ReturnDesc, Operand[3], WalkState);
Cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (Status) || WalkState->ResultObj)
{
AcpiUtRemoveReference (ReturnDesc);
WalkState->ResultObj = NULL;
}
/* Set the return object and exit */
else
{
WalkState->ResultObj = ReturnDesc;
}
return_ACPI_STATUS (Status);
}
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);
}
}
ACPI_STATUS
AcpiExOpcode_1A_0T_0R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_0R,
AcpiPsGetOpcodeName (WalkState->Opcode));
/* Examine the AML opcode */
switch (WalkState->Opcode)
{
case AML_RELEASE_OP: /* Release (MutexObject) */
Status = AcpiExReleaseMutex (Operand[0], WalkState);
break;
case AML_RESET_OP: /* Reset (EventObject) */
Status = AcpiExSystemResetEvent (Operand[0]);
break;
case AML_SIGNAL_OP: /* Signal (EventObject) */
Status = AcpiExSystemSignalEvent (Operand[0]);
break;
case AML_SLEEP_OP: /* Sleep (MsecTime) */
Status = AcpiExSystemDoSuspend (Operand[0]->Integer.Value);
break;
case AML_STALL_OP: /* Stall (UsecTime) */
Status = AcpiExSystemDoStall ((UINT32) Operand[0]->Integer.Value);
break;
case AML_UNLOAD_OP: /* Unload (Handle) */
Status = AcpiExUnloadTable (Operand[0]);
break;
default: /* Unknown opcode */
ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
break;
}
return_ACPI_STATUS (Status);
}
acpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
union acpi_operand_object *return_desc2 = NULL;
u32 temp32;
u32 i;
acpi_integer power_of_ten;
acpi_integer digit;
ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_1T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
/* Examine the AML opcode */
switch (walk_state->opcode) {
case AML_BIT_NOT_OP:
case AML_FIND_SET_LEFT_BIT_OP:
case AML_FIND_SET_RIGHT_BIT_OP:
case AML_FROM_BCD_OP:
case AML_TO_BCD_OP:
case AML_COND_REF_OF_OP:
/* Create a return object of type Integer for these opcodes */
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
switch (walk_state->opcode) {
case AML_BIT_NOT_OP: /* Not (Operand, Result) */
return_desc->integer.value = ~operand[0]->integer.value;
break;
case AML_FIND_SET_LEFT_BIT_OP: /* find_set_left_bit (Operand, Result) */
return_desc->integer.value = operand[0]->integer.value;
/*
* Acpi specification describes Integer type as a little
* endian unsigned value, so this boundary condition is valid.
*/
for (temp32 = 0; return_desc->integer.value &&
temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) {
return_desc->integer.value >>= 1;
}
return_desc->integer.value = temp32;
break;
case AML_FIND_SET_RIGHT_BIT_OP: /* find_set_right_bit (Operand, Result) */
return_desc->integer.value = operand[0]->integer.value;
/*
* The Acpi specification describes Integer type as a little
* endian unsigned value, so this boundary condition is valid.
*/
for (temp32 = 0; return_desc->integer.value &&
temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) {
return_desc->integer.value <<= 1;
}
/* Since the bit position is one-based, subtract from 33 (65) */
return_desc->integer.value =
temp32 ==
0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - temp32;
break;
case AML_FROM_BCD_OP: /* from_bcd (BCDValue, Result) */
/*
* The 64-bit ACPI integer can hold 16 4-bit BCD characters
* (if table is 32-bit, integer can hold 8 BCD characters)
* Convert each 4-bit BCD value
*/
power_of_ten = 1;
return_desc->integer.value = 0;
digit = operand[0]->integer.value;
/* Convert each BCD digit (each is one nybble wide) */
for (i = 0;
(i < acpi_gbl_integer_nybble_width) && (digit > 0);
i++) {
/* Get the least significant 4-bit BCD digit */
temp32 = ((u32) digit) & 0xF;
/* Check the range of the digit */
if (temp32 > 9) {
ACPI_ERROR((AE_INFO,
"BCD digit too large (not decimal): 0x%X",
temp32));
status = AE_AML_NUMERIC_OVERFLOW;
goto cleanup;
}
/* Sum the digit into the result with the current power of 10 */
return_desc->integer.value +=
(((acpi_integer) temp32) * power_of_ten);
/* Shift to next BCD digit */
digit >>= 4;
/* Next power of 10 */
power_of_ten *= 10;
}
break;
case AML_TO_BCD_OP: /* to_bcd (Operand, Result) */
return_desc->integer.value = 0;
digit = operand[0]->integer.value;
/* Each BCD digit is one nybble wide */
for (i = 0;
(i < acpi_gbl_integer_nybble_width) && (digit > 0);
i++) {
(void)acpi_ut_short_divide(digit, 10, &digit,
&temp32);
/*
* Insert the BCD digit that resides in the
* remainder from above
*/
return_desc->integer.value |=
(((acpi_integer) temp32) << ACPI_MUL_4(i));
}
/* Overflow if there is any data left in Digit */
if (digit > 0) {
ACPI_ERROR((AE_INFO,
"Integer too large to convert to BCD: %8.8X%8.8X",
ACPI_FORMAT_UINT64(operand[0]->
integer.value)));
status = AE_AML_NUMERIC_OVERFLOW;
goto cleanup;
}
break;
case AML_COND_REF_OF_OP: /* cond_ref_of (source_object, Result) */
/*
* This op is a little strange because the internal return value is
* different than the return value stored in the result descriptor
* (There are really two return values)
*/
if ((struct acpi_namespace_node *)operand[0] ==
acpi_gbl_root_node) {
/*
* This means that the object does not exist in the namespace,
* return FALSE
*/
return_desc->integer.value = 0;
goto cleanup;
}
/* Get the object reference, store it, and remove our reference */
status = acpi_ex_get_object_reference(operand[0],
&return_desc2,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
status =
acpi_ex_store(return_desc2, operand[1], walk_state);
acpi_ut_remove_reference(return_desc2);
/* The object exists in the namespace, return TRUE */
return_desc->integer.value = ACPI_INTEGER_MAX;
goto cleanup;
default:
/* No other opcodes get here */
break;
}
break;
case AML_STORE_OP: /* Store (Source, Target) */
/*
* A store operand is typically a number, string, buffer or lvalue
* Be careful about deleting the source object,
* since the object itself may have been stored.
*/
status = acpi_ex_store(operand[0], operand[1], walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* It is possible that the Store already produced a return object */
if (!walk_state->result_obj) {
/*
* Normally, we would remove a reference on the Operand[0]
* parameter; But since it is being used as the internal return
* object (meaning we would normally increment it), the two
* cancel out, and we simply don't do anything.
*/
walk_state->result_obj = operand[0];
walk_state->operands[0] = NULL; /* Prevent deletion */
}
return_ACPI_STATUS(status);
/*
* ACPI 2.0 Opcodes
*/
case AML_COPY_OP: /* Copy (Source, Target) */
status =
acpi_ut_copy_iobject_to_iobject(operand[0], &return_desc,
walk_state);
break;
case AML_TO_DECSTRING_OP: /* to_decimal_string (Data, Result) */
status = acpi_ex_convert_to_string(operand[0], &return_desc,
ACPI_EXPLICIT_CONVERT_DECIMAL);
if (return_desc == operand[0]) {
/* No conversion performed, add ref to handle return value */
acpi_ut_add_reference(return_desc);
}
break;
case AML_TO_HEXSTRING_OP: /* to_hex_string (Data, Result) */
status = acpi_ex_convert_to_string(operand[0], &return_desc,
ACPI_EXPLICIT_CONVERT_HEX);
if (return_desc == operand[0]) {
/* No conversion performed, add ref to handle return value */
acpi_ut_add_reference(return_desc);
}
break;
case AML_TO_BUFFER_OP: /* to_buffer (Data, Result) */
status = acpi_ex_convert_to_buffer(operand[0], &return_desc);
if (return_desc == operand[0]) {
/* No conversion performed, add ref to handle return value */
acpi_ut_add_reference(return_desc);
}
break;
case AML_TO_INTEGER_OP: /* to_integer (Data, Result) */
status = acpi_ex_convert_to_integer(operand[0], &return_desc,
ACPI_ANY_BASE);
if (return_desc == operand[0]) {
/* No conversion performed, add ref to handle return value */
acpi_ut_add_reference(return_desc);
}
break;
case AML_SHIFT_LEFT_BIT_OP: /* shift_left_bit (Source, bit_num) */
case AML_SHIFT_RIGHT_BIT_OP: /* shift_right_bit (Source, bit_num) */
/* These are two obsolete opcodes */
ACPI_ERROR((AE_INFO,
"%s is obsolete and not implemented",
acpi_ps_get_opcode_name(walk_state->opcode)));
status = AE_SUPPORT;
goto cleanup;
default: /* Unknown opcode */
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
if (ACPI_SUCCESS(status)) {
/* Store the return value computed above into the target object */
status = acpi_ex_store(return_desc, operand[1], walk_state);
}
cleanup:
/* Delete return object on error */
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(return_desc);
}
/* Save return object on success */
else if (!walk_state->result_obj) {
walk_state->result_obj = return_desc;
}
return_ACPI_STATUS(status);
}
acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *temp_desc;
union acpi_operand_object *return_desc = NULL;
acpi_status status = AE_OK;
u32 type;
acpi_integer value;
ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_0T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
/* Examine the AML opcode */
switch (walk_state->opcode) {
case AML_LNOT_OP: /* LNot (Operand) */
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/*
* Set result to ONES (TRUE) if Value == 0. Note:
* return_desc->Integer.Value is initially == 0 (FALSE) from above.
*/
if (!operand[0]->integer.value) {
return_desc->integer.value = ACPI_INTEGER_MAX;
}
break;
case AML_DECREMENT_OP: /* Decrement (Operand) */
case AML_INCREMENT_OP: /* Increment (Operand) */
/*
* Create a new integer. Can't just get the base integer and
* increment it because it may be an Arg or Field.
*/
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/*
* Since we are expecting a Reference operand, it can be either a
* NS Node or an internal object.
*/
temp_desc = operand[0];
if (ACPI_GET_DESCRIPTOR_TYPE(temp_desc) ==
ACPI_DESC_TYPE_OPERAND) {
/* Internal reference object - prevent deletion */
acpi_ut_add_reference(temp_desc);
}
/*
* Convert the Reference operand to an Integer (This removes a
* reference on the Operand[0] object)
*
* NOTE: We use LNOT_OP here in order to force resolution of the
* reference operand to an actual integer.
*/
status =
acpi_ex_resolve_operands(AML_LNOT_OP, &temp_desc,
walk_state);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"While resolving operands for [%s]",
acpi_ps_get_opcode_name(walk_state->
opcode)));
goto cleanup;
}
/*
* temp_desc is now guaranteed to be an Integer object --
* Perform the actual increment or decrement
*/
if (walk_state->opcode == AML_INCREMENT_OP) {
return_desc->integer.value =
temp_desc->integer.value + 1;
} else {
return_desc->integer.value =
temp_desc->integer.value - 1;
}
/* Finished with this Integer object */
acpi_ut_remove_reference(temp_desc);
/*
* Store the result back (indirectly) through the original
* Reference object
*/
status = acpi_ex_store(return_desc, operand[0], walk_state);
break;
case AML_TYPE_OP: /* object_type (source_object) */
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value. For example, we don't
* want to resolve a field_unit to its value, we want the actual
* field_unit object.
*/
/* Get the type of the base object */
status =
acpi_ex_resolve_multiple(walk_state, operand[0], &type,
NULL);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/* Allocate a descriptor to hold the type. */
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
return_desc->integer.value = type;
break;
case AML_SIZE_OF_OP: /* size_of (source_object) */
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value.
*/
/* Get the base object */
status = acpi_ex_resolve_multiple(walk_state,
operand[0], &type,
&temp_desc);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/*
* The type of the base object must be integer, buffer, string, or
* package. All others are not supported.
*
* NOTE: Integer is not specifically supported by the ACPI spec,
* but is supported implicitly via implicit operand conversion.
* rather than bother with conversion, we just use the byte width
* global (4 or 8 bytes).
*/
switch (type) {
case ACPI_TYPE_INTEGER:
value = acpi_gbl_integer_byte_width;
break;
case ACPI_TYPE_BUFFER:
value = temp_desc->buffer.length;
break;
case ACPI_TYPE_STRING:
value = temp_desc->string.length;
break;
case ACPI_TYPE_PACKAGE:
value = temp_desc->package.count;
break;
default:
ACPI_ERROR((AE_INFO,
"Operand is not Buf/Int/Str/Pkg - found type %s",
acpi_ut_get_type_name(type)));
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
/*
* Now that we have the size of the object, create a result
* object to hold the value
*/
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
return_desc->integer.value = value;
break;
case AML_REF_OF_OP: /* ref_of (source_object) */
status =
acpi_ex_get_object_reference(operand[0], &return_desc,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
break;
case AML_DEREF_OF_OP: /* deref_of (obj_reference | String) */
/* Check for a method local or argument, or standalone String */
if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) ==
ACPI_DESC_TYPE_NAMED) {
temp_desc =
acpi_ns_get_attached_object((struct
acpi_namespace_node *)
operand[0]);
if (temp_desc
&&
((ACPI_GET_OBJECT_TYPE(temp_desc) ==
ACPI_TYPE_STRING)
|| (ACPI_GET_OBJECT_TYPE(temp_desc) ==
ACPI_TYPE_LOCAL_REFERENCE))) {
operand[0] = temp_desc;
acpi_ut_add_reference(temp_desc);
} else {
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
} else {
switch (ACPI_GET_OBJECT_TYPE(operand[0])) {
case ACPI_TYPE_LOCAL_REFERENCE:
/*
* This is a deref_of (local_x | arg_x)
*
* Must resolve/dereference the local/arg reference first
*/
switch (operand[0]->reference.opcode) {
case AML_LOCAL_OP:
case AML_ARG_OP:
/* Set Operand[0] to the value of the local/arg */
status =
acpi_ds_method_data_get_value
(operand[0]->reference.opcode,
operand[0]->reference.offset,
walk_state, &temp_desc);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/*
* Delete our reference to the input object and
* point to the object just retrieved
*/
acpi_ut_remove_reference(operand[0]);
operand[0] = temp_desc;
break;
case AML_REF_OF_OP:
/* Get the object to which the reference refers */
temp_desc =
operand[0]->reference.object;
acpi_ut_remove_reference(operand[0]);
operand[0] = temp_desc;
break;
default:
/* Must be an Index op - handled below */
break;
}
break;
case ACPI_TYPE_STRING:
break;
default:
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
}
if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) !=
ACPI_DESC_TYPE_NAMED) {
if (ACPI_GET_OBJECT_TYPE(operand[0]) ==
ACPI_TYPE_STRING) {
/*
* This is a deref_of (String). The string is a reference
* to a named ACPI object.
*
* 1) Find the owning Node
* 2) Dereference the node to an actual object. Could be a
* Field, so we need to resolve the node to a value.
*/
status =
acpi_ns_get_node(walk_state->scope_info->
scope.node,
operand[0]->string.pointer,
ACPI_NS_SEARCH_PARENT,
ACPI_CAST_INDIRECT_PTR
(struct
acpi_namespace_node,
&return_desc));
if (ACPI_FAILURE(status)) {
goto cleanup;
}
status =
acpi_ex_resolve_node_to_value
(ACPI_CAST_INDIRECT_PTR
(struct acpi_namespace_node, &return_desc),
walk_state);
goto cleanup;
}
}
/* Operand[0] may have changed from the code above */
if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) ==
ACPI_DESC_TYPE_NAMED) {
/*
* This is a deref_of (object_reference)
* Get the actual object from the Node (This is the dereference).
* This case may only happen when a local_x or arg_x is
* dereferenced above.
*/
return_desc = acpi_ns_get_attached_object((struct
acpi_namespace_node
*)
operand[0]);
acpi_ut_add_reference(return_desc);
} else {
/*
* This must be a reference object produced by either the
* Index() or ref_of() operator
*/
switch (operand[0]->reference.opcode) {
case AML_INDEX_OP:
/*
* The target type for the Index operator must be
* either a Buffer or a Package
*/
switch (operand[0]->reference.target_type) {
case ACPI_TYPE_BUFFER_FIELD:
temp_desc =
operand[0]->reference.object;
/*
* Create a new object that contains one element of the
* buffer -- the element pointed to by the index.
*
* NOTE: index into a buffer is NOT a pointer to a
* sub-buffer of the main buffer, it is only a pointer to a
* single element (byte) of the buffer!
*/
return_desc =
acpi_ut_create_internal_object
(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/*
* Since we are returning the value of the buffer at the
* indexed location, we don't need to add an additional
* reference to the buffer itself.
*/
return_desc->integer.value =
temp_desc->buffer.
pointer[operand[0]->reference.
offset];
break;
case ACPI_TYPE_PACKAGE:
/*
* Return the referenced element of the package. We must
* add another reference to the referenced object, however.
*/
return_desc =
*(operand[0]->reference.where);
if (return_desc) {
acpi_ut_add_reference
(return_desc);
}
break;
default:
ACPI_ERROR((AE_INFO,
"Unknown Index TargetType %X in obj %p",
operand[0]->reference.
target_type, operand[0]));
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
break;
case AML_REF_OF_OP:
return_desc = operand[0]->reference.object;
if (ACPI_GET_DESCRIPTOR_TYPE(return_desc) ==
ACPI_DESC_TYPE_NAMED) {
return_desc =
acpi_ns_get_attached_object((struct
acpi_namespace_node
*)
return_desc);
}
/* Add another reference to the object! */
acpi_ut_add_reference(return_desc);
break;
default:
ACPI_ERROR((AE_INFO,
"Unknown opcode in reference(%p) - %X",
operand[0],
operand[0]->reference.opcode));
status = AE_TYPE;
goto cleanup;
}
}
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_3A_0T_0R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute Triadic operator (3 operands)
*
******************************************************************************/
acpi_status acpi_ex_opcode_3A_0T_0R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
struct acpi_signal_fatal_info *fatal;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_STR(ex_opcode_3A_0T_0R,
acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
case AML_FATAL_OP: /* Fatal (fatal_type fatal_code fatal_arg) */
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"FatalOp: Type %X Code %X Arg %X "
"<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
(u32)operand[0]->integer.value,
(u32)operand[1]->integer.value,
(u32)operand[2]->integer.value));
fatal = ACPI_ALLOCATE(sizeof(struct acpi_signal_fatal_info));
if (fatal) {
fatal->type = (u32) operand[0]->integer.value;
fatal->code = (u32) operand[1]->integer.value;
fatal->argument = (u32) operand[2]->integer.value;
}
/* Always signal the OS! */
status = acpi_os_signal(ACPI_SIGNAL_FATAL, fatal);
/* Might return while OS is shutting down, just continue */
ACPI_FREE(fatal);
goto cleanup;
case AML_EXTERNAL_OP:
/*
* If the interpreter sees this opcode, just ignore it. The External
* op is intended for use by disassemblers in order to properly
* disassemble control method invocations. The opcode or group of
* opcodes should be surrounded by an "if (0)" clause to ensure that
* AML interpreters never see the opcode. Thus, something is
* wrong if an external opcode ever gets here.
*/
ACPI_ERROR((AE_INFO, "Executed External Op"));
status = AE_OK;
goto cleanup;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
cleanup:
return_ACPI_STATUS(status);
}
acpi_status acpi_ex_opcode_6A_0T_1R(struct acpi_walk_state * walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
acpi_status status = AE_OK;
acpi_integer index;
union acpi_operand_object *this_element;
ACPI_FUNCTION_TRACE_STR("ex_opcode_6A_0T_1R",
acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
case AML_MATCH_OP:
/*
* Match (search_pkg[0], match_op1[1], match_obj1[2],
* match_op2[3], match_obj2[4], start_index[5])
*/
/* Validate both Match Term Operators (MTR, MEQ, etc.) */
if ((operand[1]->integer.value > MAX_MATCH_OPERATOR) ||
(operand[3]->integer.value > MAX_MATCH_OPERATOR)) {
ACPI_ERROR((AE_INFO, "Match operator out of range"));
status = AE_AML_OPERAND_VALUE;
goto cleanup;
}
/* Get the package start_index, validate against the package length */
index = operand[5]->integer.value;
if (index >= operand[0]->package.count) {
ACPI_ERROR((AE_INFO,
"Index (%X%8.8X) beyond package end (%X)",
ACPI_FORMAT_UINT64(index),
operand[0]->package.count));
status = AE_AML_PACKAGE_LIMIT;
goto cleanup;
}
/* Create an integer for the return value */
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Default return value if no match found */
return_desc->integer.value = ACPI_INTEGER_MAX;
/*
* Examine each element until a match is found. Both match conditions
* must be satisfied for a match to occur. Within the loop,
* "continue" signifies that the current element does not match
* and the next should be examined.
*
* Upon finding a match, the loop will terminate via "break" at
* the bottom. If it terminates "normally", match_value will be
* ACPI_INTEGER_MAX (Ones) (its initial value) indicating that no
* match was found.
*/
for (; index < operand[0]->package.count; index++) {
/* Get the current package element */
this_element = operand[0]->package.elements[index];
/* Treat any uninitialized (NULL) elements as non-matching */
if (!this_element) {
continue;
}
/*
* Both match conditions must be satisfied. Execution of a continue
* (proceed to next iteration of enclosing for loop) signifies a
* non-match.
*/
if (!acpi_ex_do_match((u32) operand[1]->integer.value,
this_element, operand[2])) {
continue;
}
if (!acpi_ex_do_match((u32) operand[3]->integer.value,
this_element, operand[4])) {
continue;
}
/* Match found: Index is the return value */
return_desc->integer.value = index;
break;
}
break;
case AML_LOAD_TABLE_OP:
status = acpi_ex_load_table_op(walk_state, &return_desc);
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
walk_state->result_obj = return_desc;
cleanup:
/* Delete return object on error */
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(return_desc);
}
return_ACPI_STATUS(status);
}
ACPI_STATUS
AcpiUtStrtoul64 (
char *String,
UINT64 *ReturnValue)
{
ACPI_STATUS Status = AE_OK;
UINT8 OriginalBitWidth;
UINT32 Base = 10; /* Default is decimal */
ACPI_FUNCTION_TRACE_STR (UtStrtoul64, String);
*ReturnValue = 0;
/* A NULL return string returns a value of zero */
if (*String == 0)
{
return_ACPI_STATUS (AE_OK);
}
if (!AcpiUtRemoveWhitespace (&String))
{
return_ACPI_STATUS (AE_OK);
}
/*
* 1) Check for a hex constant. A "0x" prefix indicates base 16.
*/
if (AcpiUtDetectHexPrefix (&String))
{
Base = 16;
}
/*
* 2) Check for an octal constant, defined to be a leading zero
* followed by sequence of octal digits (0-7)
*/
else if (AcpiUtDetectOctalPrefix (&String))
{
Base = 8;
}
if (!AcpiUtRemoveLeadingZeros (&String))
{
return_ACPI_STATUS (AE_OK); /* Return value 0 */
}
/*
* Force a full 64-bit conversion. The caller (usually iASL) must
* check for a 32-bit overflow later as necessary (If current mode
* is 32-bit, meaning a 32-bit DSDT).
*/
OriginalBitWidth = AcpiGbl_IntegerBitWidth;
AcpiGbl_IntegerBitWidth = 64;
/*
* Perform the base 8, 10, or 16 conversion. A 64-bit numeric overflow
* will return an exception (to allow iASL to flag the statement).
*/
switch (Base)
{
case 8:
Status = AcpiUtConvertOctalString (String, ReturnValue);
break;
case 10:
Status = AcpiUtConvertDecimalString (String, ReturnValue);
break;
case 16:
default:
Status = AcpiUtConvertHexString (String, ReturnValue);
break;
}
/* Only possible exception from above is a 64-bit overflow */
AcpiGbl_IntegerBitWidth = OriginalBitWidth;
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExOpcode_2A_0T_0R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_NAMESPACE_NODE *Node;
UINT32 Value;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_0R,
AcpiPsGetOpcodeName (WalkState->Opcode));
/* Examine the opcode */
switch (WalkState->Opcode)
{
case AML_NOTIFY_OP: /* Notify (NotifyObject, NotifyValue) */
/* The first operand is a namespace node */
Node = (ACPI_NAMESPACE_NODE *) Operand[0];
/* Second value is the notify value */
Value = (UINT32) Operand[1]->Integer.Value;
/* Are notifies allowed on this object? */
if (!AcpiEvIsNotifyObject (Node))
{
ACPI_ERROR ((AE_INFO,
"Unexpected notify object type [%s]",
AcpiUtGetTypeName (Node->Type)));
Status = AE_AML_OPERAND_TYPE;
break;
}
#ifdef ACPI_GPE_NOTIFY_CHECK
/*
* GPE method wake/notify check. Here, we want to ensure that we
* don't receive any "DeviceWake" Notifies from a GPE _Lxx or _Exx
* GPE method during system runtime. If we do, the GPE is marked
* as "wake-only" and disabled.
*
* 1) Is the Notify() value == DeviceWake?
* 2) Is this a GPE deferred method? (An _Lxx or _Exx method)
* 3) Did the original GPE happen at system runtime?
* (versus during wake)
*
* If all three cases are true, this is a wake-only GPE that should
* be disabled at runtime.
*/
if (Value == 2) /* DeviceWake */
{
Status = AcpiEvCheckForWakeOnlyGpe (WalkState->GpeEventInfo);
if (ACPI_FAILURE (Status))
{
/* AE_WAKE_ONLY_GPE only error, means ignore this notify */
return_ACPI_STATUS (AE_OK)
}
}
#endif
/*
* Dispatch the notify to the appropriate handler
* NOTE: the request is queued for execution after this method
* completes. The notify handlers are NOT invoked synchronously
* from this thread -- because handlers may in turn run other
* control methods.
*/
Status = AcpiEvQueueNotifyRequest (Node, Value);
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
}
acpi_status acpi_ex_opcode_6A_0T_1R(struct acpi_walk_state * walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
acpi_status status = AE_OK;
acpi_integer index;
union acpi_operand_object *this_element;
ACPI_FUNCTION_TRACE_STR(ex_opcode_6A_0T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
case AML_MATCH_OP:
if ((operand[1]->integer.value > MAX_MATCH_OPERATOR) ||
(operand[3]->integer.value > MAX_MATCH_OPERATOR)) {
ACPI_ERROR((AE_INFO, "Match operator out of range"));
status = AE_AML_OPERAND_VALUE;
goto cleanup;
}
index = operand[5]->integer.value;
if (index >= operand[0]->package.count) {
ACPI_ERROR((AE_INFO,
"Index (%X%8.8X) beyond package end (%X)",
ACPI_FORMAT_UINT64(index),
operand[0]->package.count));
status = AE_AML_PACKAGE_LIMIT;
goto cleanup;
}
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
return_desc->integer.value = ACPI_INTEGER_MAX;
for (; index < operand[0]->package.count; index++) {
this_element = operand[0]->package.elements[index];
if (!this_element) {
continue;
}
if (!acpi_ex_do_match((u32) operand[1]->integer.value,
this_element, operand[2])) {
continue;
}
if (!acpi_ex_do_match((u32) operand[3]->integer.value,
this_element, operand[4])) {
continue;
}
return_desc->integer.value = index;
break;
}
break;
case AML_LOAD_TABLE_OP:
status = acpi_ex_load_table_op(walk_state, &return_desc);
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
cleanup:
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(return_desc);
}
else {
walk_state->result_obj = return_desc;
}
return_ACPI_STATUS(status);
}
ACPI_STATUS
AcpiExOpcode_2A_1T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
UINT64 Index;
ACPI_STATUS Status = AE_OK;
ACPI_SIZE Length = 0;
ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_1T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
/* Execute the opcode */
if (WalkState->OpInfo->Flags & AML_MATH)
{
/* All simple math opcodes (add, etc.) */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
ReturnDesc->Integer.Value = AcpiExDoMathOp (WalkState->Opcode,
Operand[0]->Integer.Value,
Operand[1]->Integer.Value);
goto StoreResultToTarget;
}
switch (WalkState->Opcode)
{
case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* ReturnDesc will contain the remainder */
Status = AcpiUtDivide (Operand[0]->Integer.Value,
Operand[1]->Integer.Value,
NULL,
&ReturnDesc->Integer.Value);
break;
case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */
Status = AcpiExDoConcatenate (Operand[0], Operand[1],
&ReturnDesc, WalkState);
break;
case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */
/*
* Input object is guaranteed to be a buffer at this point (it may have
* been converted.) Copy the raw buffer data to a new object of
* type String.
*/
/*
* Get the length of the new string. It is the smallest of:
* 1) Length of the input buffer
* 2) Max length as specified in the ToString operator
* 3) Length of input buffer up to a zero byte (null terminator)
*
* NOTE: A length of zero is ok, and will create a zero-length, null
* terminated string.
*/
while ((Length < Operand[0]->Buffer.Length) &&
(Length < Operand[1]->Integer.Value) &&
(Operand[0]->Buffer.Pointer[Length]))
{
Length++;
}
/* Allocate a new string object */
ReturnDesc = AcpiUtCreateStringObject (Length);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/*
* Copy the raw buffer data with no transform.
* (NULL terminated already)
*/
ACPI_MEMCPY (ReturnDesc->String.Pointer,
Operand[0]->Buffer.Pointer, Length);
break;
case AML_CONCAT_RES_OP:
/* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */
Status = AcpiExConcatTemplate (Operand[0], Operand[1],
&ReturnDesc, WalkState);
break;
case AML_INDEX_OP: /* Index (Source Index Result) */
/* Create the internal return object */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Initialize the Index reference object */
Index = Operand[1]->Integer.Value;
ReturnDesc->Reference.Value = (UINT32) Index;
ReturnDesc->Reference.Class = ACPI_REFCLASS_INDEX;
/*
* At this point, the Source operand is a String, Buffer, or Package.
* Verify that the index is within range.
*/
switch ((Operand[0])->Common.Type)
{
case ACPI_TYPE_STRING:
if (Index >= Operand[0]->String.Length)
{
Length = Operand[0]->String.Length;
Status = AE_AML_STRING_LIMIT;
}
ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
break;
case ACPI_TYPE_BUFFER:
if (Index >= Operand[0]->Buffer.Length)
{
Length = Operand[0]->Buffer.Length;
Status = AE_AML_BUFFER_LIMIT;
}
ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
break;
case ACPI_TYPE_PACKAGE:
if (Index >= Operand[0]->Package.Count)
{
Length = Operand[0]->Package.Count;
Status = AE_AML_PACKAGE_LIMIT;
}
ReturnDesc->Reference.TargetType = ACPI_TYPE_PACKAGE;
ReturnDesc->Reference.Where = &Operand[0]->Package.Elements [Index];
break;
default:
Status = AE_AML_INTERNAL;
goto Cleanup;
}
/* Failure means that the Index was beyond the end of the object */
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
ACPI_FORMAT_UINT64 (Index), (UINT32) Length));
goto Cleanup;
}
/*
* Save the target object and add a reference to it for the life
* of the index
*/
ReturnDesc->Reference.Object = Operand[0];
AcpiUtAddReference (Operand[0]);
/* Store the reference to the Target */
Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
/* Return the reference */
WalkState->ResultObj = ReturnDesc;
goto Cleanup;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
break;
}
StoreResultToTarget:
if (ACPI_SUCCESS (Status))
{
/*
* Store the result of the operation (which is now in ReturnDesc) into
* the Target descriptor.
*/
Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
if (!WalkState->ResultObj)
{
WalkState->ResultObj = ReturnDesc;
}
}
Cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ReturnDesc);
WalkState->ResultObj = NULL;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExOpcode_3A_0T_0R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_SIGNAL_FATAL_INFO *Fatal;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE_STR (ExOpcode_3A_0T_0R,
AcpiPsGetOpcodeName (WalkState->Opcode));
switch (WalkState->Opcode)
{
case AML_FATAL_OP: /* Fatal (FatalType FatalCode FatalArg) */
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"FatalOp: Type %X Code %X Arg %X "
"<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
(UINT32) Operand[0]->Integer.Value,
(UINT32) Operand[1]->Integer.Value,
(UINT32) Operand[2]->Integer.Value));
Fatal = ACPI_ALLOCATE (sizeof (ACPI_SIGNAL_FATAL_INFO));
if (Fatal)
{
Fatal->Type = (UINT32) Operand[0]->Integer.Value;
Fatal->Code = (UINT32) Operand[1]->Integer.Value;
Fatal->Argument = (UINT32) Operand[2]->Integer.Value;
}
/* Always signal the OS! */
Status = AcpiOsSignal (ACPI_SIGNAL_FATAL, Fatal);
/* Might return while OS is shutting down, just continue */
ACPI_FREE (Fatal);
goto Cleanup;
case AML_EXTERNAL_OP:
/*
* If the interpreter sees this opcode, just ignore it. The External
* op is intended for use by disassemblers in order to properly
* disassemble control method invocations. The opcode or group of
* opcodes should be surrounded by an "if (0)" clause to ensure that
* AML interpreters never see the opcode. Thus, something is
* wrong if an external opcode ever gets here.
*/
ACPI_ERROR ((AE_INFO, "Executed External Op"));
Status = AE_OK;
goto Cleanup;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
Cleanup:
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExOpcode_2A_0T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
ACPI_STATUS Status = AE_OK;
BOOLEAN LogicalResult = FALSE;
ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
/* Create the internal return object */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Execute the Opcode */
if (WalkState->OpInfo->Flags & AML_LOGICAL_NUMERIC)
{
/* LogicalOp (Operand0, Operand1) */
Status = AcpiExDoLogicalNumericOp (WalkState->Opcode,
Operand[0]->Integer.Value, Operand[1]->Integer.Value,
&LogicalResult);
goto StoreLogicalResult;
}
else if (WalkState->OpInfo->Flags & AML_LOGICAL)
{
/* LogicalOp (Operand0, Operand1) */
Status = AcpiExDoLogicalOp (WalkState->Opcode, Operand[0],
Operand[1], &LogicalResult);
goto StoreLogicalResult;
}
switch (WalkState->Opcode)
{
case AML_ACQUIRE_OP: /* Acquire (MutexObject, Timeout) */
Status = AcpiExAcquireMutex (Operand[1], Operand[0], WalkState);
if (Status == AE_TIME)
{
LogicalResult = TRUE; /* TRUE = Acquire timed out */
Status = AE_OK;
}
break;
case AML_WAIT_OP: /* Wait (EventObject, Timeout) */
Status = AcpiExSystemWaitEvent (Operand[1], Operand[0]);
if (Status == AE_TIME)
{
LogicalResult = TRUE; /* TRUE, Wait timed out */
Status = AE_OK;
}
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
StoreLogicalResult:
/*
* Set return value to according to LogicalResult. logical TRUE (all ones)
* Default is FALSE (zero)
*/
if (LogicalResult)
{
ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
}
Cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ReturnDesc);
}
/* Save return object on success */
else
{
WalkState->ResultObj = ReturnDesc;
}
return_ACPI_STATUS (Status);
}
union acpi_operand_object *acpi_ut_create_internal_object_dbg(const char
*module_name,
u32 line_number,
u32 component_id,
acpi_object_type
type)
{
union acpi_operand_object *object;
union acpi_operand_object *second_object;
ACPI_FUNCTION_TRACE_STR(ut_create_internal_object_dbg,
acpi_ut_get_type_name(type));
/* Allocate the raw object descriptor */
object =
acpi_ut_allocate_object_desc_dbg(module_name, line_number,
component_id);
if (!object) {
return_PTR(NULL);
}
switch (type) {
case ACPI_TYPE_REGION:
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
/* These types require a secondary object */
second_object = acpi_ut_allocate_object_desc_dbg(module_name,
line_number,
component_id);
if (!second_object) {
acpi_ut_delete_object_desc(object);
return_PTR(NULL);
}
second_object->common.type = ACPI_TYPE_LOCAL_EXTRA;
second_object->common.reference_count = 1;
/* Link the second object to the first */
object->common.next_object = second_object;
break;
default:
/* All others have no secondary object */
break;
}
/* Save the object type in the object descriptor */
object->common.type = (u8) type;
/* Init the reference count */
object->common.reference_count = 1;
/* Any per-type initialization should go here */
return_PTR(object);
}
acpi_status
acpi_ut_strtoul64(char *string,
u32 base, u32 max_integer_byte_width, u64 *ret_integer)
{
u32 this_digit = 0;
u64 return_value = 0;
u64 quotient;
u64 dividend;
u8 valid_digits = 0;
u8 sign_of0x = 0;
u8 term = 0;
ACPI_FUNCTION_TRACE_STR(ut_strtoul64, string);
switch (base) {
case ACPI_ANY_BASE:
case 10:
case 16:
break;
default:
/* Invalid Base */
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (!string) {
goto error_exit;
}
/* Skip over any white space in the buffer */
while ((*string) && (isspace((int)*string) || *string == '\t')) {
string++;
}
if (base == ACPI_ANY_BASE) {
/*
* Base equal to ACPI_ANY_BASE means 'Either decimal or hex'.
* We need to determine if it is decimal or hexadecimal.
*/
if ((*string == '0') && (tolower((int)*(string + 1)) == 'x')) {
sign_of0x = 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) || isspace((int)*string) || *string == '\t') {
if (base == ACPI_ANY_BASE) {
goto error_exit;
} else {
goto all_done;
}
}
/*
* Perform a 32-bit or 64-bit conversion, depending upon the input
* byte width
*/
dividend = (max_integer_byte_width <= ACPI_MAX32_BYTE_WIDTH) ?
ACPI_UINT32_MAX : ACPI_UINT64_MAX;
/* Main loop: convert the string to a 32- or 64-bit integer */
while (*string) {
if (isdigit((int)*string)) {
/* Convert ASCII 0-9 to Decimal value */
this_digit = ((u8)*string) - '0';
} else if (base == 10) {
/* Digit is out of range; possible in to_integer case only */
term = 1;
} else {
this_digit = (u8)toupper((int)*string);
if (isxdigit((int)this_digit)) {
/* Convert ASCII Hex char to value */
this_digit = this_digit - 'A' + 10;
} else {
term = 1;
}
}
if (term) {
if (base == ACPI_ANY_BASE) {
goto error_exit;
} else {
break;
}
} else if ((valid_digits == 0) && (this_digit == 0)
&& !sign_of0x) {
/* Skip zeros */
string++;
continue;
}
valid_digits++;
if (sign_of0x && ((valid_digits > 16) ||
((valid_digits > 8)
&& (max_integer_byte_width <=
ACPI_MAX32_BYTE_WIDTH)))) {
/*
* This is to_integer operation case.
* No restrictions for string-to-integer conversion,
* see ACPI spec.
*/
goto error_exit;
}
/* Divide the digit into the correct position */
(void)acpi_ut_short_divide((dividend - (u64)this_digit), base,
"ient, NULL);
if (return_value > quotient) {
if (base == ACPI_ANY_BASE) {
goto error_exit;
} else {
break;
}
}
return_value *= base;
return_value += this_digit;
string++;
}
/* All done, normal exit */
all_done:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n",
ACPI_FORMAT_UINT64(return_value)));
*ret_integer = return_value;
return_ACPI_STATUS(AE_OK);
error_exit:
/* Base was set/validated above (10 or 16) */
if (base == 10) {
return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT);
} else {
return_ACPI_STATUS(AE_BAD_HEX_CONSTANT);
}
}
ACPI_STATUS
AcpiExOpcode_6A_0T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
ACPI_STATUS Status = AE_OK;
ACPI_INTEGER Index;
ACPI_OPERAND_OBJECT *ThisElement;
ACPI_FUNCTION_TRACE_STR (ExOpcode_6A_0T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
switch (WalkState->Opcode)
{
case AML_MATCH_OP:
/*
* Match (SearchPkg[0], MatchOp1[1], MatchObj1[2],
* MatchOp2[3], MatchObj2[4], StartIndex[5])
*/
/* Validate both Match Term Operators (MTR, MEQ, etc.) */
if ((Operand[1]->Integer.Value > MAX_MATCH_OPERATOR) ||
(Operand[3]->Integer.Value > MAX_MATCH_OPERATOR))
{
ACPI_ERROR ((AE_INFO, "Match operator out of range"));
Status = AE_AML_OPERAND_VALUE;
goto Cleanup;
}
/* Get the package StartIndex, validate against the package length */
Index = Operand[5]->Integer.Value;
if (Index >= Operand[0]->Package.Count)
{
ACPI_ERROR ((AE_INFO,
"Index (%X%8.8X) beyond package end (%X)",
ACPI_FORMAT_UINT64 (Index), Operand[0]->Package.Count));
Status = AE_AML_PACKAGE_LIMIT;
goto Cleanup;
}
/* Create an integer for the return value */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Default return value if no match found */
ReturnDesc->Integer.Value = ACPI_INTEGER_MAX;
/*
* Examine each element until a match is found. Both match conditions
* must be satisfied for a match to occur. Within the loop,
* "continue" signifies that the current element does not match
* and the next should be examined.
*
* Upon finding a match, the loop will terminate via "break" at
* the bottom. If it terminates "normally", MatchValue will be
* ACPI_INTEGER_MAX (Ones) (its initial value) indicating that no
* match was found.
*/
for ( ; Index < Operand[0]->Package.Count; Index++)
{
/* Get the current package element */
ThisElement = Operand[0]->Package.Elements[Index];
/* Treat any uninitialized (NULL) elements as non-matching */
if (!ThisElement)
{
continue;
}
/*
* Both match conditions must be satisfied. Execution of a continue
* (proceed to next iteration of enclosing for loop) signifies a
* non-match.
*/
if (!AcpiExDoMatch ((UINT32) Operand[1]->Integer.Value,
ThisElement, Operand[2]))
{
continue;
}
if (!AcpiExDoMatch ((UINT32) Operand[3]->Integer.Value,
ThisElement, Operand[4]))
{
continue;
}
/* Match found: Index is the return value */
ReturnDesc->Integer.Value = Index;
break;
}
break;
case AML_LOAD_TABLE_OP:
Status = AcpiExLoadTableOp (WalkState, &ReturnDesc);
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
Cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ReturnDesc);
}
/* Save return object on success */
else
{
WalkState->ResultObj = ReturnDesc;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiExOpcode_1A_1T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL;
UINT32 Temp32;
UINT32 i;
ACPI_INTEGER PowerOfTen;
ACPI_INTEGER Digit;
ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
/* Examine the AML opcode */
switch (WalkState->Opcode)
{
case AML_BIT_NOT_OP:
case AML_FIND_SET_LEFT_BIT_OP:
case AML_FIND_SET_RIGHT_BIT_OP:
case AML_FROM_BCD_OP:
case AML_TO_BCD_OP:
case AML_COND_REF_OF_OP:
/* Create a return object of type Integer for these opcodes */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
switch (WalkState->Opcode)
{
case AML_BIT_NOT_OP: /* Not (Operand, Result) */
ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value;
break;
case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */
ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
/*
* Acpi specification describes Integer type as a little
* endian unsigned value, so this boundary condition is valid.
*/
for (Temp32 = 0; ReturnDesc->Integer.Value &&
Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
{
ReturnDesc->Integer.Value >>= 1;
}
ReturnDesc->Integer.Value = Temp32;
break;
case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */
ReturnDesc->Integer.Value = Operand[0]->Integer.Value;
/*
* The Acpi specification describes Integer type as a little
* endian unsigned value, so this boundary condition is valid.
*/
for (Temp32 = 0; ReturnDesc->Integer.Value &&
Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
{
ReturnDesc->Integer.Value <<= 1;
}
/* Since the bit position is one-based, subtract from 33 (65) */
ReturnDesc->Integer.Value =
Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32;
break;
case AML_FROM_BCD_OP: /* FromBcd (BCDValue, Result) */
/*
* The 64-bit ACPI integer can hold 16 4-bit BCD characters
* (if table is 32-bit, integer can hold 8 BCD characters)
* Convert each 4-bit BCD value
*/
PowerOfTen = 1;
ReturnDesc->Integer.Value = 0;
Digit = Operand[0]->Integer.Value;
/* Convert each BCD digit (each is one nybble wide) */
for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
{
/* Get the least significant 4-bit BCD digit */
Temp32 = ((UINT32) Digit) & 0xF;
/* Check the range of the digit */
if (Temp32 > 9)
{
ACPI_ERROR ((AE_INFO,
"BCD digit too large (not decimal): 0x%X",
Temp32));
Status = AE_AML_NUMERIC_OVERFLOW;
goto Cleanup;
}
/* Sum the digit into the result with the current power of 10 */
ReturnDesc->Integer.Value +=
(((ACPI_INTEGER) Temp32) * PowerOfTen);
/* Shift to next BCD digit */
Digit >>= 4;
/* Next power of 10 */
PowerOfTen *= 10;
}
break;
case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */
ReturnDesc->Integer.Value = 0;
Digit = Operand[0]->Integer.Value;
/* Each BCD digit is one nybble wide */
for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
{
(void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32);
/*
* Insert the BCD digit that resides in the
* remainder from above
*/
ReturnDesc->Integer.Value |=
(((ACPI_INTEGER) Temp32) << ACPI_MUL_4 (i));
}
/* Overflow if there is any data left in Digit */
if (Digit > 0)
{
ACPI_ERROR ((AE_INFO,
"Integer too large to convert to BCD: %8.8X%8.8X",
ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value)));
Status = AE_AML_NUMERIC_OVERFLOW;
goto Cleanup;
}
break;
case AML_COND_REF_OF_OP: /* CondRefOf (SourceObject, Result) */
/*
* This op is a little strange because the internal return value is
* different than the return value stored in the result descriptor
* (There are really two return values)
*/
if ((ACPI_NAMESPACE_NODE *) Operand[0] == AcpiGbl_RootNode)
{
/*
* This means that the object does not exist in the namespace,
* return FALSE
*/
ReturnDesc->Integer.Value = 0;
goto Cleanup;
}
/* Get the object reference, store it, and remove our reference */
Status = AcpiExGetObjectReference (Operand[0],
&ReturnDesc2, WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState);
AcpiUtRemoveReference (ReturnDesc2);
/* The object exists in the namespace, return TRUE */
ReturnDesc->Integer.Value = ACPI_INTEGER_MAX;
goto Cleanup;
default:
/* No other opcodes get here */
break;
}
break;
case AML_STORE_OP: /* Store (Source, Target) */
/*
* A store operand is typically a number, string, buffer or lvalue
* Be careful about deleting the source object,
* since the object itself may have been stored.
*/
Status = AcpiExStore (Operand[0], Operand[1], WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* It is possible that the Store already produced a return object */
if (!WalkState->ResultObj)
{
/*
* Normally, we would remove a reference on the Operand[0]
* parameter; But since it is being used as the internal return
* object (meaning we would normally increment it), the two
* cancel out, and we simply don't do anything.
*/
WalkState->ResultObj = Operand[0];
WalkState->Operands[0] = NULL; /* Prevent deletion */
}
return_ACPI_STATUS (Status);
/*
* ACPI 2.0 Opcodes
*/
case AML_COPY_OP: /* Copy (Source, Target) */
Status = AcpiUtCopyIobjectToIobject (Operand[0], &ReturnDesc,
WalkState);
break;
case AML_TO_DECSTRING_OP: /* ToDecimalString (Data, Result) */
Status = AcpiExConvertToString (Operand[0], &ReturnDesc,
ACPI_EXPLICIT_CONVERT_DECIMAL);
if (ReturnDesc == Operand[0])
{
/* No conversion performed, add ref to handle return value */
AcpiUtAddReference (ReturnDesc);
}
break;
case AML_TO_HEXSTRING_OP: /* ToHexString (Data, Result) */
Status = AcpiExConvertToString (Operand[0], &ReturnDesc,
ACPI_EXPLICIT_CONVERT_HEX);
if (ReturnDesc == Operand[0])
{
/* No conversion performed, add ref to handle return value */
AcpiUtAddReference (ReturnDesc);
}
break;
case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */
Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc);
if (ReturnDesc == Operand[0])
{
/* No conversion performed, add ref to handle return value */
AcpiUtAddReference (ReturnDesc);
}
break;
case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */
Status = AcpiExConvertToInteger (Operand[0], &ReturnDesc,
ACPI_ANY_BASE);
if (ReturnDesc == Operand[0])
{
/* No conversion performed, add ref to handle return value */
AcpiUtAddReference (ReturnDesc);
}
break;
case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */
case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */
/* These are two obsolete opcodes */
ACPI_ERROR ((AE_INFO,
"%s is obsolete and not implemented",
AcpiPsGetOpcodeName (WalkState->Opcode)));
Status = AE_SUPPORT;
goto Cleanup;
default: /* Unknown opcode */
ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
if (ACPI_SUCCESS (Status))
{
/* Store the return value computed above into the target object */
Status = AcpiExStore (ReturnDesc, Operand[1], WalkState);
}
Cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ReturnDesc);
}
/* Save return object on success */
else if (!WalkState->ResultObj)
{
WalkState->ResultObj = ReturnDesc;
}
return_ACPI_STATUS (Status);
}
ACPI_OPERAND_OBJECT *
AcpiUtCreateInternalObjectDbg (
const char *ModuleName,
UINT32 LineNumber,
UINT32 ComponentId,
ACPI_OBJECT_TYPE Type)
{
ACPI_OPERAND_OBJECT *Object;
ACPI_OPERAND_OBJECT *SecondObject;
ACPI_FUNCTION_TRACE_STR (UtCreateInternalObjectDbg,
AcpiUtGetTypeName (Type));
/* Allocate the raw object descriptor */
Object = AcpiUtAllocateObjectDescDbg (
ModuleName, LineNumber, ComponentId);
if (!Object)
{
return_PTR (NULL);
}
switch (Type)
{
case ACPI_TYPE_REGION:
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
/* These types require a secondary object */
SecondObject = AcpiUtAllocateObjectDescDbg (
ModuleName, LineNumber, ComponentId);
if (!SecondObject)
{
AcpiUtDeleteObjectDesc (Object);
return_PTR (NULL);
}
SecondObject->Common.Type = ACPI_TYPE_LOCAL_EXTRA;
SecondObject->Common.ReferenceCount = 1;
/* Link the second object to the first */
Object->Common.NextObject = SecondObject;
break;
default:
/* All others have no secondary object */
break;
}
/* Save the object type in the object descriptor */
Object->Common.Type = (UINT8) Type;
/* Init the reference count */
Object->Common.ReferenceCount = 1;
/* Any per-type initialization should go here */
return_PTR (Object);
}
/*******************************************************************************
*
* FUNCTION: acpi_ex_opcode_2A_0T_0R
*
* PARAMETERS: walk_state - Current walk state
*
* RETURN: Status
*
* DESCRIPTION: Execute opcode with two arguments, no target, and no return
* value.
*
* ALLOCATION: Deletes both operands
*
******************************************************************************/
acpi_status acpi_ex_opcode_2A_0T_0R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
struct acpi_namespace_node *node;
u32 value;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_0R,
acpi_ps_get_opcode_name(walk_state->opcode));
/* Examine the opcode */
switch (walk_state->opcode) {
case AML_NOTIFY_OP: /* Notify (notify_object, notify_value) */
/* The first operand is a namespace node */
node = (struct acpi_namespace_node *)operand[0];
/* Second value is the notify value */
value = (u32) operand[1]->integer.value;
/* Are notifies allowed on this object? */
if (!acpi_ev_is_notify_object(node)) {
ACPI_ERROR((AE_INFO,
"Unexpected notify object type [%s]",
acpi_ut_get_type_name(node->type)));
status = AE_AML_OPERAND_TYPE;
break;
}
#ifdef ACPI_GPE_NOTIFY_CHECK
/*
* GPE method wake/notify check. Here, we want to ensure that we
* don't receive any "DeviceWake" Notifies from a GPE _Lxx or _Exx
* GPE method during system runtime. If we do, the GPE is marked
* as "wake-only" and disabled.
*
* 1) Is the Notify() value == device_wake?
* 2) Is this a GPE deferred method? (An _Lxx or _Exx method)
* 3) Did the original GPE happen at system runtime?
* (versus during wake)
*
* If all three cases are true, this is a wake-only GPE that should
* be disabled at runtime.
*/
if (value == 2) { /* device_wake */
status =
acpi_ev_check_for_wake_only_gpe(walk_state->
gpe_event_info);
if (ACPI_FAILURE(status)) {
/* AE_WAKE_ONLY_GPE only error, means ignore this notify */
return_ACPI_STATUS(AE_OK)
}
}
#endif
/*
* Dispatch the notify to the appropriate handler
* NOTE: the request is queued for execution after this method
* completes. The notify handlers are NOT invoked synchronously
* from this thread -- because handlers may in turn run other
* control methods.
*/
status = acpi_ev_queue_notify_request(node, value);
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
}
acpi_status acpi_ut_strtoul64(char *string, u32 flags, u64 *return_value)
{
acpi_status status = AE_OK;
u32 base;
ACPI_FUNCTION_TRACE_STR(ut_strtoul64, string);
/* Parameter validation */
if (!string || !return_value) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
*return_value = 0;
/* Check for zero-length string, returns 0 */
if (*string == 0) {
return_ACPI_STATUS(AE_OK);
}
/* Skip over any white space at start of string */
while (isspace((int)*string)) {
string++;
}
/* End of string? return 0 */
if (*string == 0) {
return_ACPI_STATUS(AE_OK);
}
/*
* 1) The "0x" prefix indicates base 16. Per the ACPI specification,
* the "0x" prefix is only allowed for implicit (non-strict) conversions.
* However, we always allow it for compatibility with older ACPICA.
*/
if ((*string == ACPI_ASCII_ZERO) &&
(tolower((int)*(string + 1)) == 'x')) {
string += 2; /* Go past the 0x */
if (*string == 0) {
return_ACPI_STATUS(AE_OK); /* Return value 0 */
}
base = 16;
}
/* 2) Force to base 16 (implicit conversion case) */
else if (flags & ACPI_STRTOUL_BASE16) {
base = 16;
}
/* 3) Default fallback is to Base 10 */
else {
base = 10;
}
/* Skip all leading zeros */
while (*string == ACPI_ASCII_ZERO) {
string++;
if (*string == 0) {
return_ACPI_STATUS(AE_OK); /* Return value 0 */
}
}
/* Perform the base 16 or 10 conversion */
if (base == 16) {
*return_value = acpi_ut_strtoul_base16(string, flags);
} else {
*return_value = acpi_ut_strtoul_base10(string, flags);
}
return_ACPI_STATUS(status);
}
acpi_status acpi_ex_opcode_3A_1T_1R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
char *buffer = NULL;
acpi_status status = AE_OK;
acpi_integer index;
acpi_size length;
ACPI_FUNCTION_TRACE_STR(ex_opcode_3A_1T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
/*
* Create the return object. The Source operand is guaranteed to be
* either a String or a Buffer, so just use its type.
*/
return_desc =
acpi_ut_create_internal_object(ACPI_GET_OBJECT_TYPE
(operand[0]));
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
/* Get the Integer values from the objects */
index = operand[1]->integer.value;
length = (acpi_size) operand[2]->integer.value;
/*
* If the index is beyond the length of the String/Buffer, or if the
* requested length is zero, return a zero-length String/Buffer
*/
if (index >= operand[0]->string.length) {
length = 0;
}
/* Truncate request if larger than the actual String/Buffer */
else if ((index + length) > operand[0]->string.length) {
length = (acpi_size) operand[0]->string.length -
(acpi_size) index;
}
/* Strings always have a sub-pointer, not so for buffers */
switch (ACPI_GET_OBJECT_TYPE(operand[0])) {
case ACPI_TYPE_STRING:
/* Always allocate a new buffer for the String */
buffer = ACPI_ALLOCATE_ZEROED((acpi_size) length + 1);
if (!buffer) {
status = AE_NO_MEMORY;
goto cleanup;
}
break;
case ACPI_TYPE_BUFFER:
/* If the requested length is zero, don't allocate a buffer */
if (length > 0) {
/* Allocate a new buffer for the Buffer */
buffer = ACPI_ALLOCATE_ZEROED(length);
if (!buffer) {
status = AE_NO_MEMORY;
goto cleanup;
}
}
break;
default: /* Should not happen */
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
if (buffer) {
/* We have a buffer, copy the portion requested */
ACPI_MEMCPY(buffer, operand[0]->string.pointer + index,
length);
}
/* Set the length of the new String/Buffer */
return_desc->string.pointer = buffer;
return_desc->string.length = (u32) length;
/* Mark buffer initialized */
return_desc->buffer.flags |= AOPOBJ_DATA_VALID;
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
/* Store the result in the target */
status = acpi_ex_store(return_desc, operand[3], walk_state);
cleanup:
/* Delete return object on error */
if (ACPI_FAILURE(status) || walk_state->result_obj) {
acpi_ut_remove_reference(return_desc);
walk_state->result_obj = NULL;
}
/* Set the return object and exit */
else {
walk_state->result_obj = return_desc;
}
return_ACPI_STATUS(status);
}
acpi_status acpi_ex_opcode_3A_1T_1R(struct acpi_walk_state *walk_state)
{
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
char *buffer = NULL;
acpi_status status = AE_OK;
acpi_integer index;
acpi_size length;
ACPI_FUNCTION_TRACE_STR(ex_opcode_3A_1T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
switch (walk_state->opcode) {
case AML_MID_OP:
return_desc = acpi_ut_create_internal_object((operand[0])->
common.type);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
index = operand[1]->integer.value;
length = (acpi_size) operand[2]->integer.value;
if (index >= operand[0]->string.length) {
length = 0;
}
else if ((index + length) > operand[0]->string.length) {
length = (acpi_size) operand[0]->string.length -
(acpi_size) index;
}
switch ((operand[0])->common.type) {
case ACPI_TYPE_STRING:
buffer = ACPI_ALLOCATE_ZEROED((acpi_size) length + 1);
if (!buffer) {
status = AE_NO_MEMORY;
goto cleanup;
}
break;
case ACPI_TYPE_BUFFER:
if (length > 0) {
buffer = ACPI_ALLOCATE_ZEROED(length);
if (!buffer) {
status = AE_NO_MEMORY;
goto cleanup;
}
}
break;
default:
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
if (buffer) {
ACPI_MEMCPY(buffer, operand[0]->string.pointer + index,
length);
}
return_desc->string.pointer = buffer;
return_desc->string.length = (u32) length;
return_desc->buffer.flags |= AOPOBJ_DATA_VALID;
break;
default:
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
status = acpi_ex_store(return_desc, operand[3], walk_state);
cleanup:
if (ACPI_FAILURE(status) || walk_state->result_obj) {
acpi_ut_remove_reference(return_desc);
walk_state->result_obj = NULL;
}
else {
walk_state->result_obj = return_desc;
}
return_ACPI_STATUS(status);
}
