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
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
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
AcpiDsLoad1EndOp (
ACPI_WALK_STATE *WalkState)
{
ACPI_PARSE_OBJECT *Op;
ACPI_OBJECT_TYPE ObjectType;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE (DsLoad1EndOp);
Op = WalkState->Op;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
/* We are only interested in opcodes that have an associated name */
if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD)))
{
return_ACPI_STATUS (AE_OK);
}
/* Get the object type to determine if we should pop the scope */
ObjectType = WalkState->OpInfo->ObjectType;
#ifndef ACPI_NO_METHOD_EXECUTION
if (WalkState->OpInfo->Flags & AML_FIELD)
{
/*
* If we are executing a method, do not create any namespace objects
* during the load phase, only during execution.
*/
if (!WalkState->MethodNode)
{
if (WalkState->Opcode == AML_FIELD_OP ||
WalkState->Opcode == AML_BANK_FIELD_OP ||
WalkState->Opcode == AML_INDEX_FIELD_OP)
{
Status = AcpiDsInitFieldObjects (Op, WalkState);
}
}
return_ACPI_STATUS (Status);
}
/*
* If we are executing a method, do not create any namespace objects
* during the load phase, only during execution.
*/
if (!WalkState->MethodNode)
{
if (Op->Common.AmlOpcode == AML_REGION_OP)
{
Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
(ACPI_ADR_SPACE_TYPE) ((Op->Common.Value.Arg)->Common.Value.Integer),
WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
{
Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
ACPI_ADR_SPACE_DATA_TABLE, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
}
#endif
if (Op->Common.AmlOpcode == AML_NAME_OP)
{
/* For Name opcode, get the object type from the argument */
if (Op->Common.Value.Arg)
{
ObjectType = (AcpiPsGetOpcodeInfo (
(Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType;
/* Set node type if we have a namespace node */
if (Op->Common.Node)
{
Op->Common.Node->Type = (UINT8) ObjectType;
}
}
}
/*
* If we are executing a method, do not create any namespace objects
* during the load phase, only during execution.
*/
if (!WalkState->MethodNode)
{
if (Op->Common.AmlOpcode == AML_METHOD_OP)
{
/*
* MethodOp PkgLength NameString MethodFlags TermList
*
* Note: We must create the method node/object pair as soon as we
* see the method declaration. This allows later pass1 parsing
* of invocations of the method (need to know the number of
* arguments.)
*/
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"LOADING-Method: State=%p Op=%p NamedObj=%p\n",
WalkState, Op, Op->Named.Node));
if (!AcpiNsGetAttachedObject (Op->Named.Node))
{
WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
WalkState->NumOperands = 1;
Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
if (ACPI_SUCCESS (Status))
{
Status = AcpiExCreateMethod (Op->Named.Data,
Op->Named.Length, WalkState);
}
WalkState->Operands[0] = NULL;
WalkState->NumOperands = 0;
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
}
ACPI_STATUS
AcpiDsExecEndControlOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *ControlState;
ACPI_FUNCTION_NAME (DsExecEndControlOp);
switch (Op->Common.AmlOpcode)
{
case AML_IF_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", Op));
/*
* Save the result of the predicate in case there is an
* ELSE to come
*/
WalkState->LastPredicate =
(BOOLEAN) WalkState->ControlState->Common.Value;
/*
* Pop the control state that was created at the start
* of the IF and free it
*/
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
break;
case AML_ELSE_OP:
break;
case AML_WHILE_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", Op));
ControlState = WalkState->ControlState;
if (ControlState->Common.Value)
{
/* Predicate was true, the body of the loop was just executed */
/*
* This infinite loop detection mechanism allows the interpreter
* to escape possibly infinite loops. This can occur in poorly
* written AML when the hardware does not respond within a while
* loop and the loop does not implement a timeout.
*/
if (ACPI_TIME_AFTER (AcpiOsGetTimer (),
ControlState->Control.LoopTimeout))
{
Status = AE_AML_LOOP_TIMEOUT;
break;
}
/*
* Go back and evaluate the predicate and maybe execute the loop
* another time
*/
Status = AE_CTRL_PENDING;
WalkState->AmlLastWhile =
ControlState->Control.AmlPredicateStart;
break;
}
/* Predicate was false, terminate this while loop */
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"[WHILE_OP] termination! Op=%p\n",Op));
/* Pop this control state and free it */
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
break;
case AML_RETURN_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"[RETURN_OP] Op=%p Arg=%p\n",Op, Op->Common.Value.Arg));
/*
* One optional operand -- the return value
* It can be either an immediate operand or a result that
* has been bubbled up the tree
*/
if (Op->Common.Value.Arg)
{
/* Since we have a real Return(), delete any implicit return */
AcpiDsClearImplicitReturn (WalkState);
/* Return statement has an immediate operand */
Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*/
Status = AcpiExResolveToValue (
&WalkState->Operands [0], WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* Get the return value and save as the last result
* value. This is the only place where WalkState->ReturnDesc
* is set to anything other than zero!
*/
WalkState->ReturnDesc = WalkState->Operands[0];
}
else if (WalkState->ResultCount)
{
/* Since we have a real Return(), delete any implicit return */
AcpiDsClearImplicitReturn (WalkState);
/*
* The return value has come from a previous calculation.
*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*
* Allow references created by the Index operator to return
* unchanged.
*/
if ((ACPI_GET_DESCRIPTOR_TYPE (WalkState->Results->Results.ObjDesc[0]) ==
ACPI_DESC_TYPE_OPERAND) &&
((WalkState->Results->Results.ObjDesc [0])->Common.Type ==
ACPI_TYPE_LOCAL_REFERENCE) &&
((WalkState->Results->Results.ObjDesc [0])->Reference.Class !=
ACPI_REFCLASS_INDEX))
{
Status = AcpiExResolveToValue (
&WalkState->Results->Results.ObjDesc [0], WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
WalkState->ReturnDesc = WalkState->Results->Results.ObjDesc [0];
}
else
{
/* No return operand */
if (WalkState->NumOperands)
{
AcpiUtRemoveReference (WalkState->Operands [0]);
}
WalkState->Operands[0] = NULL;
WalkState->NumOperands = 0;
WalkState->ReturnDesc = NULL;
}
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Completed RETURN_OP State=%p, RetVal=%p\n",
WalkState, WalkState->ReturnDesc));
/* End the control method execution right now */
Status = AE_CTRL_TERMINATE;
break;
case AML_NOOP_OP:
/* Just do nothing! */
break;
case AML_BREAKPOINT_OP:
AcpiDbSignalBreakPoint (WalkState);
/* Call to the OSL in case OS wants a piece of the action */
Status = AcpiOsSignal (ACPI_SIGNAL_BREAKPOINT,
"Executed AML Breakpoint opcode");
break;
case AML_BREAK_OP:
case AML_CONTINUE_OP: /* ACPI 2.0 */
/* Pop and delete control states until we find a while */
while (WalkState->ControlState &&
(WalkState->ControlState->Control.Opcode != AML_WHILE_OP))
{
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
}
/* No while found? */
if (!WalkState->ControlState)
{
return (AE_AML_NO_WHILE);
}
/* Was: WalkState->AmlLastWhile = WalkState->ControlState->Control.AmlPredicateStart; */
WalkState->AmlLastWhile =
WalkState->ControlState->Control.PackageEnd;
/* Return status depending on opcode */
if (Op->Common.AmlOpcode == AML_BREAK_OP)
{
Status = AE_CTRL_BREAK;
}
else
{
Status = AE_CTRL_CONTINUE;
}
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown control opcode=0x%X Op=%p",
Op->Common.AmlOpcode, Op));
Status = AE_AML_BAD_OPCODE;
break;
}
return (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);
}
ACPI_STATUS
AcpiDsExecEndControlOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *ControlState;
ACPI_FUNCTION_NAME ("DsExecEndControlOp");
switch (Op->Common.AmlOpcode)
{
case AML_IF_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", Op));
/*
* Save the result of the predicate in case there is an
* ELSE to come
*/
WalkState->LastPredicate =
(BOOLEAN) WalkState->ControlState->Common.Value;
/*
* Pop the control state that was created at the start
* of the IF and free it
*/
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
break;
case AML_ELSE_OP:
break;
case AML_WHILE_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", Op));
if (WalkState->ControlState->Common.Value)
{
/* Predicate was true, go back and evaluate it again! */
Status = AE_CTRL_PENDING;
}
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] termination! Op=%p\n", Op));
/* Pop this control state and free it */
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
WalkState->AmlLastWhile = ControlState->Control.AmlPredicateStart;
AcpiUtDeleteGenericState (ControlState);
break;
case AML_RETURN_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"[RETURN_OP] Op=%p Arg=%p\n",Op, Op->Common.Value.Arg));
/*
* One optional operand -- the return value
* It can be either an immediate operand or a result that
* has been bubbled up the tree
*/
if (Op->Common.Value.Arg)
{
/* Return statement has an immediate operand */
Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*/
Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* Get the return value and save as the last result
* value. This is the only place where WalkState->ReturnDesc
* is set to anything other than zero!
*/
WalkState->ReturnDesc = WalkState->Operands[0];
}
else if ((WalkState->Results) &&
(WalkState->Results->Results.NumResults > 0))
{
/*
* The return value has come from a previous calculation.
*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*
* Allow references created by the Index operator to return unchanged.
*/
if ((ACPI_GET_DESCRIPTOR_TYPE (WalkState->Results->Results.ObjDesc[0]) == ACPI_DESC_TYPE_OPERAND) &&
(ACPI_GET_OBJECT_TYPE (WalkState->Results->Results.ObjDesc [0]) == ACPI_TYPE_LOCAL_REFERENCE) &&
((WalkState->Results->Results.ObjDesc [0])->Reference.Opcode != AML_INDEX_OP))
{
Status = AcpiExResolveToValue (&WalkState->Results->Results.ObjDesc [0], WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
WalkState->ReturnDesc = WalkState->Results->Results.ObjDesc [0];
}
else
{
/* No return operand */
if (WalkState->NumOperands)
{
AcpiUtRemoveReference (WalkState->Operands [0]);
}
WalkState->Operands [0] = NULL;
WalkState->NumOperands = 0;
WalkState->ReturnDesc = NULL;
}
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Completed RETURN_OP State=%p, RetVal=%p\n",
WalkState, WalkState->ReturnDesc));
/* End the control method execution right now */
Status = AE_CTRL_TERMINATE;
break;
case AML_NOOP_OP:
/* Just do nothing! */
break;
case AML_BREAK_POINT_OP:
/* Call up to the OS service layer to handle this */
Status = AcpiOsSignal (ACPI_SIGNAL_BREAKPOINT, "Executed AML Breakpoint opcode");
/* If and when it returns, all done. */
break;
case AML_BREAK_OP:
case AML_CONTINUE_OP: /* ACPI 2.0 */
/* Pop and delete control states until we find a while */
while (WalkState->ControlState &&
(WalkState->ControlState->Control.Opcode != AML_WHILE_OP))
{
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
}
/* No while found? */
if (!WalkState->ControlState)
{
return (AE_AML_NO_WHILE);
}
/* Was: WalkState->AmlLastWhile = WalkState->ControlState->Control.AmlPredicateStart; */
WalkState->AmlLastWhile = WalkState->ControlState->Control.PackageEnd;
/* Return status depending on opcode */
if (Op->Common.AmlOpcode == AML_BREAK_OP)
{
Status = AE_CTRL_BREAK;
}
else
{
Status = AE_CTRL_CONTINUE;
}
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown control opcode=%X Op=%p\n",
Op->Common.AmlOpcode, Op));
Status = AE_AML_BAD_OPCODE;
break;
}
return (Status);
}
