ACPI_STATUS AcpiDsEvaluateNamePath ( ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status = AE_OK; ACPI_PARSE_OBJECT *Op = WalkState->Op; ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_OPERAND_OBJECT *NewObjDesc; UINT8 Type; ACPI_FUNCTION_TRACE_PTR (DsEvaluateNamePath, WalkState); if (!Op->Common.Parent) { /* This happens after certain exception processing */ goto Exit; } if ((Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) || (Op->Common.Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP) || (Op->Common.Parent->Common.AmlOpcode == AML_REF_OF_OP)) { /* TBD: Should we specify this feature as a bit of OpInfo->Flags of these opcodes? */ goto Exit; } Status = AcpiDsCreateOperand (WalkState, Op, 0); if (ACPI_FAILURE (Status)) { goto Exit; } if (Op->Common.Flags & ACPI_PARSEOP_TARGET) { NewObjDesc = *Operand; goto PushResult; } Type = (*Operand)->Common.Type; Status = AcpiExResolveToValue (Operand, WalkState); if (ACPI_FAILURE (Status)) { goto Exit; } if (Type == ACPI_TYPE_INTEGER) { /* It was incremented by AcpiExResolveToValue */ AcpiUtRemoveReference (*Operand); Status = AcpiUtCopyIobjectToIobject (*Operand, &NewObjDesc, WalkState); if (ACPI_FAILURE (Status)) { goto Exit; } } else { /* * The object either was anew created or is * a Namespace node - don't decrement it. */ NewObjDesc = *Operand; } /* Cleanup for name-path operand */ Status = AcpiDsObjStackPop (1, WalkState); if (ACPI_FAILURE (Status)) { WalkState->ResultObj = NewObjDesc; goto Exit; } PushResult: WalkState->ResultObj = NewObjDesc; Status = AcpiDsResultPush (WalkState->ResultObj, WalkState); if (ACPI_SUCCESS (Status)) { /* Force to take it from stack */ Op->Common.Flags |= ACPI_PARSEOP_IN_STACK; } Exit: return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiDsCreateOperands ( ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *FirstArg) { ACPI_STATUS Status = AE_OK; ACPI_PARSE_OBJECT *Arg; ACPI_PARSE_OBJECT *Arguments[ACPI_OBJ_NUM_OPERANDS]; UINT32 ArgCount = 0; UINT32 Index = WalkState->NumOperands; UINT32 i; ACPI_FUNCTION_TRACE_PTR (DsCreateOperands, FirstArg); /* Get all arguments in the list */ Arg = FirstArg; while (Arg) { if (Index >= ACPI_OBJ_NUM_OPERANDS) { return_ACPI_STATUS (AE_BAD_DATA); } Arguments[Index] = Arg; WalkState->Operands [Index] = NULL; /* Move on to next argument, if any */ Arg = Arg->Common.Next; ArgCount++; Index++; } Index--; /* It is the appropriate order to get objects from the Result stack */ for (i = 0; i < ArgCount; i++) { Arg = Arguments[Index]; /* Force the filling of the operand stack in inverse order */ WalkState->OperandIndex = (UINT8) Index; Status = AcpiDsCreateOperand (WalkState, Arg, Index); if (ACPI_FAILURE (Status)) { goto Cleanup; } Index--; ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Arg #%u (%p) done, Arg1=%p\n", Index, Arg, FirstArg)); } return_ACPI_STATUS (Status); Cleanup: /* * We must undo everything done above; meaning that we must * pop everything off of the operand stack and delete those * objects */ AcpiDsObjStackPopAndDelete (ArgCount, WalkState); ACPI_EXCEPTION ((AE_INFO, Status, "While creating Arg %u", Index)); 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 AcpiDsEvalBankFieldOperands ( 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_PARSE_OBJECT *Arg; ACPI_FUNCTION_TRACE_PTR (DsEvalBankFieldOperands, Op); /* * This is where we evaluate the BankValue field of the * BankField declaration */ /* NextOp points to the op that holds the Region */ NextOp = Op->Common.Value.Arg; /* NextOp points to the op that holds the Bank Register */ NextOp = NextOp->Common.Next; /* NextOp points to the op that holds the Bank Value */ NextOp = NextOp->Common.Next; /* * Set proper index into operand stack for AcpiDsObjStackPush * invoked inside AcpiDsCreateOperand. * * We use WalkState->Operands[0] to store the evaluated BankValue */ WalkState->OperandIndex = 0; Status = AcpiDsCreateOperand (WalkState, NextOp, 0); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiExResolveToValue (&WalkState->Operands[0], WalkState); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 1); /* * Get the BankValue operand and save it * (at Top of stack) */ OperandDesc = WalkState->Operands[0]; /* Arg points to the start Bank Field */ Arg = AcpiPsGetArg (Op, 4); while (Arg) { /* Ignore OFFSET and ACCESSAS terms here */ if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP) { Node = Arg->Common.Node; ObjDesc = AcpiNsGetAttachedObject (Node); if (!ObjDesc) { return_ACPI_STATUS (AE_NOT_EXIST); } ObjDesc->BankField.Value = (UINT32) OperandDesc->Integer.Value; } /* Move to next field in the list */ Arg = Arg->Common.Next; } AcpiUtRemoveReference (OperandDesc); return_ACPI_STATUS (Status); }
ACPI_STATUS AcpiDsGetPredicateValue ( ACPI_WALK_STATE *WalkState, ACPI_OPERAND_OBJECT *ResultObj) { ACPI_STATUS Status = AE_OK; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *LocalObjDesc = NULL; ACPI_FUNCTION_TRACE_PTR (DsGetPredicateValue, WalkState); WalkState->ControlState->Common.State = 0; if (ResultObj) { Status = AcpiDsResultPop (&ObjDesc, WalkState); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "Could not get result from predicate evaluation")); return_ACPI_STATUS (Status); } } else { Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } ObjDesc = WalkState->Operands [0]; } if (!ObjDesc) { ACPI_ERROR ((AE_INFO, "No predicate ObjDesc=%p State=%p", ObjDesc, WalkState)); return_ACPI_STATUS (AE_AML_NO_OPERAND); } /* * Result of predicate evaluation must be an Integer * object. Implicitly convert the argument if necessary. */ Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc, 16); if (ACPI_FAILURE (Status)) { goto Cleanup; } if (LocalObjDesc->Common.Type != ACPI_TYPE_INTEGER) { ACPI_ERROR ((AE_INFO, "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X", ObjDesc, WalkState, ObjDesc->Common.Type)); Status = AE_AML_OPERAND_TYPE; goto Cleanup; } /* Truncate the predicate to 32-bits if necessary */ (void) AcpiExTruncateFor32bitTable (LocalObjDesc); /* * Save the result of the predicate evaluation on * the control stack */ if (LocalObjDesc->Integer.Value) { WalkState->ControlState->Common.Value = TRUE; } else { /* * Predicate is FALSE, we will just toss the * rest of the package */ WalkState->ControlState->Common.Value = FALSE; Status = AE_CTRL_FALSE; } /* Predicate can be used for an implicit return value */ (void) AcpiDsDoImplicitReturn (LocalObjDesc, WalkState, TRUE); Cleanup: ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", WalkState->ControlState->Common.Value, WalkState->Op)); /* Break to debugger to display result */ AcpiDbDisplayResultObject (LocalObjDesc, WalkState); /* * Delete the predicate result object (we know that * we don't need it anymore) */ if (LocalObjDesc != ObjDesc) { AcpiUtRemoveReference (LocalObjDesc); } AcpiUtRemoveReference (ObjDesc); WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL; return_ACPI_STATUS (Status); }