ACPI_STATUS
AcpiDsEvalTableRegionOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT **Operand;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
ACPI_TABLE_HEADER *Table;
UINT32 TableIndex;
ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
/*
* This is where we evaluate the Signature string, OemId string,
* and OemTableId string of the Data Table Region declaration
*/
Node = Op->Common.Node;
/* NextOp points to Signature string op */
NextOp = Op->Common.Value.Arg;
/*
* Evaluate/create the Signature string, OemId string,
* and OemTableId string operands
*/
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Operand = &WalkState->Operands[0];
/*
* Resolve the Signature string, OemId string,
* and OemTableId string operands
*/
Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
ACPI_WALK_OPERANDS, WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Find the ACPI table */
Status = AcpiTbFindTable (
Operand[0]->String.Pointer,
Operand[1]->String.Pointer,
Operand[2]->String.Pointer, &TableIndex);
if (ACPI_FAILURE (Status))
{
if (Status == AE_NOT_FOUND)
{
ACPI_ERROR ((AE_INFO,
"ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT",
Operand[0]->String.Pointer,
Operand[1]->String.Pointer,
Operand[2]->String.Pointer));
}
goto Cleanup;
}
Status = AcpiGetTableByIndex (TableIndex, &Table);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
Status = AE_NOT_EXIST;
goto Cleanup;
}
ObjDesc->Region.Address = ACPI_PTR_TO_PHYSADDR (Table);
ObjDesc->Region.Length = Table->Length;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
ObjDesc->Region.Length));
/* Now the address and length are valid for this opregion */
ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
Cleanup:
AcpiUtRemoveReference (Operand[0]);
AcpiUtRemoveReference (Operand[1]);
AcpiUtRemoveReference (Operand[2]);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDsEvalDataObjectOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op,
ACPI_OPERAND_OBJECT *ObjDesc)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ArgDesc;
UINT32 Length;
ACPI_FUNCTION_TRACE (DsEvalDataObjectOperands);
/* The first operand (for all of these data objects) is the length */
/*
* Set proper index into operand stack for AcpiDsObjStackPush
* invoked inside AcpiDsCreateOperand.
*/
WalkState->OperandIndex = WalkState->NumOperands;
Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Status = AcpiExResolveOperands (WalkState->Opcode,
&(WalkState->Operands [WalkState->NumOperands -1]),
WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Extract length operand */
ArgDesc = WalkState->Operands [WalkState->NumOperands - 1];
Length = (UINT32) ArgDesc->Integer.Value;
/* Cleanup for length operand */
Status = AcpiDsObjStackPop (1, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
AcpiUtRemoveReference (ArgDesc);
/*
* Create the actual data object
*/
switch (Op->Common.AmlOpcode)
{
case AML_BUFFER_OP:
Status = AcpiDsBuildInternalBufferObj (WalkState, Op, Length, &ObjDesc);
break;
case AML_PACKAGE_OP:
case AML_VAR_PACKAGE_OP:
Status = AcpiDsBuildInternalPackageObj (WalkState, Op, Length, &ObjDesc);
break;
default:
return_ACPI_STATUS (AE_AML_BAD_OPCODE);
}
if (ACPI_SUCCESS (Status))
{
/*
* Return the object in the WalkState, unless the parent is a package -
* in this case, the return object will be stored in the parse tree
* for the package.
*/
if ((!Op->Common.Parent) ||
((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) &&
(Op->Common.Parent->Common.AmlOpcode != AML_VAR_PACKAGE_OP) &&
(Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP)))
{
WalkState->ResultObj = ObjDesc;
}
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDsEvalRegionOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT *OperandDesc;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op);
/*
* This is where we evaluate the address and length fields of the
* OpRegion declaration
*/
Node = Op->Common.Node;
/* NextOp points to the op that holds the SpaceID */
NextOp = Op->Common.Value.Arg;
/* NextOp points to address op */
NextOp = NextOp->Common.Next;
/* Evaluate/create the address and length operands */
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Resolve the length and address operands to numbers */
Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
ACPI_WALK_OPERANDS, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/*
* Get the length operand and save it
* (at Top of stack)
*/
OperandDesc = WalkState->Operands[WalkState->NumOperands - 1];
ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value;
AcpiUtRemoveReference (OperandDesc);
/*
* Get the address and save it
* (at top of stack - 1)
*/
OperandDesc = WalkState->Operands[WalkState->NumOperands - 2];
ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS)
OperandDesc->Integer.Value;
AcpiUtRemoveReference (OperandDesc);
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
ObjDesc,
ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
ObjDesc->Region.Length));
/* Now the address and length are valid for this opregion */
ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDsEvalBufferFieldOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
ACPI_FUNCTION_TRACE_PTR (DsEvalBufferFieldOperands, Op);
/*
* This is where we evaluate the address and length fields of the
* CreateXxxField declaration
*/
Node = Op->Common.Node;
/* NextOp points to the op that holds the Buffer */
NextOp = Op->Common.Value.Arg;
/* Evaluate/create the address and length operands */
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
/* Resolve the operands */
Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
ACPI_WALK_OPERANDS, WalkState);
if (ACPI_FAILURE (Status))
{
ACPI_ERROR ((AE_INFO, "(%s) bad operand(s), status 0x%X",
AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status));
return_ACPI_STATUS (Status);
}
/* Initialize the Buffer Field */
if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
{
/* NOTE: Slightly different operands for this opcode */
Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
WalkState->Operands[0], WalkState->Operands[1],
WalkState->Operands[2], WalkState->Operands[3]);
}
else
{
/* All other, CreateXxxField opcodes */
Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
WalkState->Operands[0], WalkState->Operands[1],
NULL, WalkState->Operands[2]);
}
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;
UINT64 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_UINT64_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_OBJECT_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 = AcpiNsGetNodeUnlocked (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)
{
/*
* Element is NULL, do not allow the dereference.
* This provides compatibility with other ACPI
* implementations.
*/
return_ACPI_STATUS (AE_AML_UNINITIALIZED_ELEMENT);
}
AcpiUtAddReference (ReturnDesc);
break;
default:
ACPI_ERROR ((AE_INFO,
"Unknown Index TargetType 0x%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);
if (!ReturnDesc)
{
break;
}
/*
* June 2013:
* BufferFields/FieldUnits require additional resolution
*/
switch (ReturnDesc->Common.Type)
{
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
Status = AcpiExReadDataFromField (
WalkState, ReturnDesc, &TempDesc);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
ReturnDesc = TempDesc;
break;
default:
/* Add another reference to the object */
AcpiUtAddReference (ReturnDesc);
break;
}
}
break;
default:
ACPI_ERROR ((AE_INFO,
"Unknown class in reference(%p) - 0x%2.2X",
Operand[0], Operand[0]->Reference.Class));
Status = AE_TYPE;
goto Cleanup;
}
}
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%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
AcpiDsExecEndOp (
ACPI_WALK_STATE *WalkState)
{
ACPI_PARSE_OBJECT *Op;
ACPI_STATUS Status = AE_OK;
UINT32 OpType;
UINT32 OpClass;
ACPI_PARSE_OBJECT *NextOp;
ACPI_PARSE_OBJECT *FirstArg;
ACPI_FUNCTION_TRACE_PTR (DsExecEndOp, WalkState);
Op = WalkState->Op;
OpType = WalkState->OpInfo->Type;
OpClass = WalkState->OpInfo->Class;
if (OpClass == AML_CLASS_UNKNOWN)
{
ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%X", Op->Common.AmlOpcode));
return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
}
FirstArg = Op->Common.Value.Arg;
/* Init the walk state */
WalkState->NumOperands = 0;
WalkState->OperandIndex = 0;
WalkState->ReturnDesc = NULL;
WalkState->ResultObj = NULL;
/* Call debugger for single step support (DEBUG build only) */
Status = AcpiDbSingleStep (WalkState, Op, OpClass);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Decode the Opcode Class */
switch (OpClass)
{
case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */
if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
{
Status = AcpiDsEvaluateNamePath (WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
}
break;
case AML_CLASS_EXECUTE: /* Most operators with arguments */
/* Build resolved operand stack */
Status = AcpiDsCreateOperands (WalkState, FirstArg);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/*
* All opcodes require operand resolution, with the only exceptions
* being the ObjectType and SizeOf operators.
*/
if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE))
{
/* Resolve all operands */
Status = AcpiExResolveOperands (WalkState->Opcode,
&(WalkState->Operands [WalkState->NumOperands -1]),
WalkState);
}
if (ACPI_SUCCESS (Status))
{
/*
* Dispatch the request to the appropriate interpreter handler
* routine. There is one routine per opcode "type" based upon the
* number of opcode arguments and return type.
*/
Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState);
}
else
{
/*
* Treat constructs of the form "Store(LocalX,LocalX)" as noops when the
* Local is uninitialized.
*/
if ((Status == AE_AML_UNINITIALIZED_LOCAL) &&
(WalkState->Opcode == AML_STORE_OP) &&
(WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
(WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
(WalkState->Operands[0]->Reference.Class ==
WalkState->Operands[1]->Reference.Class) &&
(WalkState->Operands[0]->Reference.Value ==
WalkState->Operands[1]->Reference.Value))
{
Status = AE_OK;
}
else
{
ACPI_EXCEPTION ((AE_INFO, Status,
"While resolving operands for [%s]",
AcpiPsGetOpcodeName (WalkState->Opcode)));
}
}
/* Always delete the argument objects and clear the operand stack */
AcpiDsClearOperands (WalkState);
/*
* If a result object was returned from above, push it on the
* current result stack
*/
if (ACPI_SUCCESS (Status) &&
WalkState->ResultObj)
{
Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
}
break;
default:
switch (OpType)
{
case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
/* 1 Operand, 0 ExternalResult, 0 InternalResult */
Status = AcpiDsExecEndControlOp (WalkState, Op);
break;
case AML_TYPE_METHOD_CALL:
/*
* If the method is referenced from within a package
* declaration, it is not a invocation of the method, just
* a reference to it.
*/
if ((Op->Asl.Parent) &&
((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) ||
(Op->Asl.Parent->Asl.AmlOpcode == AML_VAR_PACKAGE_OP)))
{
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Method Reference in a Package, Op=%p\n", Op));
Op->Common.Node = (ACPI_NAMESPACE_NODE *)
Op->Asl.Value.Arg->Asl.Node;
AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object);
return_ACPI_STATUS (AE_OK);
}
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Method invocation, Op=%p\n", Op));
/*
* (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
* the method Node pointer
*/
/* NextOp points to the op that holds the method name */
NextOp = FirstArg;
/* NextOp points to first argument op */
NextOp = NextOp->Common.Next;
/*
* Get the method's arguments and put them on the operand stack
*/
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
break;
}
/*
* Since the operands will be passed to another control method,
* we must resolve all local references here (Local variables,
* arguments to *this* method, etc.)
*/
Status = AcpiDsResolveOperands (WalkState);
if (ACPI_FAILURE (Status))
{
/* On error, clear all resolved operands */
AcpiDsClearOperands (WalkState);
break;
}
/*
* Tell the walk loop to preempt this running method and
* execute the new method
*/
Status = AE_CTRL_TRANSFER;
/*
* Return now; we don't want to disturb anything,
* especially the operand count!
*/
return_ACPI_STATUS (Status);
case AML_TYPE_CREATE_FIELD:
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Executing CreateField Buffer/Index Op=%p\n", Op));
Status = AcpiDsLoad2EndOp (WalkState);
if (ACPI_FAILURE (Status))
{
break;
}
Status = AcpiDsEvalBufferFieldOperands (WalkState, Op);
break;
case AML_TYPE_CREATE_OBJECT:
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Executing CreateObject (Buffer/Package) Op=%p\n", Op));
switch (Op->Common.Parent->Common.AmlOpcode)
{
case AML_NAME_OP:
/*
* Put the Node on the object stack (Contains the ACPI Name
* of this object)
*/
WalkState->Operands[0] = (void *)
Op->Common.Parent->Common.Node;
WalkState->NumOperands = 1;
Status = AcpiDsCreateNode (WalkState,
Op->Common.Parent->Common.Node, Op->Common.Parent);
if (ACPI_FAILURE (Status))
{
break;
}
/* Fall through */
/*lint -fallthrough */
case AML_INT_EVAL_SUBTREE_OP:
Status = AcpiDsEvalDataObjectOperands (WalkState, Op,
AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node));
break;
default:
Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL);
break;
}
/*
* If a result object was returned from above, push it on the
* current result stack
*/
if (WalkState->ResultObj)
{
Status = AcpiDsResultPush (WalkState->ResultObj, WalkState);
}
break;
case AML_TYPE_NAMED_FIELD:
case AML_TYPE_NAMED_COMPLEX:
case AML_TYPE_NAMED_SIMPLE:
case AML_TYPE_NAMED_NO_OBJ:
Status = AcpiDsLoad2EndOp (WalkState);
if (ACPI_FAILURE (Status))
{
break;
}
if (Op->Common.AmlOpcode == AML_REGION_OP)
{
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Executing OpRegion Address/Length Op=%p\n", Op));
Status = AcpiDsEvalRegionOperands (WalkState, Op);
if (ACPI_FAILURE (Status))
{
break;
}
}
else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
{
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Executing DataTableRegion Strings Op=%p\n", Op));
Status = AcpiDsEvalTableRegionOperands (WalkState, Op);
if (ACPI_FAILURE (Status))
{
break;
}
}
else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
{
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Executing BankField Op=%p\n", Op));
Status = AcpiDsEvalBankFieldOperands (WalkState, Op);
if (ACPI_FAILURE (Status))
{
break;
}
}
break;
case AML_TYPE_UNDEFINED:
ACPI_ERROR ((AE_INFO,
"Undefined opcode type Op=%p", Op));
return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
case AML_TYPE_BOGUS:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Internal opcode=%X type Op=%p\n",
WalkState->Opcode, Op));
break;
default:
ACPI_ERROR ((AE_INFO,
"Unimplemented opcode, class=0x%X "
"type=0x%X Opcode=0x%X Op=%p",
OpClass, OpType, Op->Common.AmlOpcode, Op));
Status = AE_NOT_IMPLEMENTED;
break;
}
}
/*
* ACPI 2.0 support for 64-bit integers: Truncate numeric
* result value if we are executing from a 32-bit ACPI table
*/
(void) AcpiExTruncateFor32bitTable (WalkState->ResultObj);
/*
* Check if we just completed the evaluation of a
* conditional predicate
*/
if ((ACPI_SUCCESS (Status)) &&
(WalkState->ControlState) &&
(WalkState->ControlState->Common.State ==
ACPI_CONTROL_PREDICATE_EXECUTING) &&
(WalkState->ControlState->Control.PredicateOp == Op))
{
Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj);
WalkState->ResultObj = NULL;
}
Cleanup:
if (WalkState->ResultObj)
{
/* Break to debugger to display result */
AcpiDbDisplayResultObject (WalkState->ResultObj,WalkState);
/*
* Delete the result op if and only if:
* Parent will not use the result -- such as any
* non-nested type2 op in a method (parent will be method)
*/
AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState);
}
#ifdef _UNDER_DEVELOPMENT
if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd)
{
AcpiDbMethodEnd (WalkState);
}
#endif
/* Invoke exception handler on error */
if (ACPI_FAILURE (Status))
{
Status = AcpiDsMethodError (Status, WalkState);
}
/* Always clear the object stack */
WalkState->NumOperands = 0;
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDsEvalTableRegionOperands (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT **Operand;
ACPI_NAMESPACE_NODE *Node;
ACPI_PARSE_OBJECT *NextOp;
UINT32 TableIndex;
ACPI_TABLE_HEADER *Table;
ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
/*
* This is where we evaluate the SignatureString and OemIDString
* and OemTableIDString of the DataTableRegion declaration
*/
Node = Op->Common.Node;
/* NextOp points to SignatureString op */
NextOp = Op->Common.Value.Arg;
/*
* Evaluate/create the SignatureString and OemIDString
* and OemTableIDString operands
*/
Status = AcpiDsCreateOperands (WalkState, NextOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* Resolve the SignatureString and OemIDString
* and OemTableIDString operands
*/
Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
ACPI_WALK_OPERANDS, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Operand = &WalkState->Operands[0];
/* Find the ACPI table */
Status = AcpiTbFindTable (Operand[0]->String.Pointer,
Operand[1]->String.Pointer, Operand[2]->String.Pointer,
&TableIndex);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
AcpiUtRemoveReference (Operand[0]);
AcpiUtRemoveReference (Operand[1]);
AcpiUtRemoveReference (Operand[2]);
Status = AcpiGetTableByIndex (TableIndex, &Table);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
ObjDesc = AcpiNsGetAttachedObject (Node);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) ACPI_TO_INTEGER (Table);
ObjDesc->Region.Length = Table->Length;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
ObjDesc,
ACPI_FORMAT_NATIVE_UINT (ObjDesc->Region.Address),
ObjDesc->Region.Length));
/* Now the address and length are valid for this opregion */
ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
return_ACPI_STATUS (Status);
}
