static void ApCheckPackageElements ( const char *PredefinedName, ACPI_PARSE_OBJECT *Op, UINT8 Type1, UINT32 Count1, UINT8 Type2, UINT32 Count2) { UINT32 i; /* * Up to two groups of package elements are supported by the data * structure. All elements in each group must be of the same type. * The second group can have a count of zero. * * Aborts check upon a NULL package element, as this means (at compile * time) that the remainder of the package elements are also NULL * (This is the only way to create NULL package elements.) */ for (i = 0; (i < Count1) && Op; i++) { ApCheckObjectType (PredefinedName, Op, Type1, i); Op = Op->Asl.Next; } for (i = 0; (i < Count2) && Op; i++) { ApCheckObjectType (PredefinedName, Op, Type2, (i + Count1)); Op = Op->Asl.Next; } }
void ApCheckForPredefinedObject ( ACPI_PARSE_OBJECT *Op, char *Name) { UINT32 Index; ACPI_PARSE_OBJECT *ObjectOp; const ACPI_PREDEFINED_INFO *ThisName; /* * Check for a real predefined name -- not a resource descriptor name * or a predefined scope name */ Index = ApCheckForPredefinedName (Op, Name); switch (Index) { case ACPI_NOT_RESERVED_NAME: /* No underscore or _Txx or _xxx name not matched */ case ACPI_PREDEFINED_NAME: /* Resource Name or reserved scope name */ case ACPI_COMPILER_RESERVED_NAME: /* A _Txx that was not emitted by compiler */ /* Nothing to do */ return; case ACPI_EVENT_RESERVED_NAME: /* _Lxx/_Exx/_Wxx/_Qxx methods */ /* * These names must be control methods, by definition in ACPI spec. * Also because they are defined to return no value. None of them * require any arguments. */ AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op, "with zero arguments"); return; default: break; } /* A standard predefined ACPI name */ /* * If this predefined name requires input arguments, then * it must be implemented as a control method */ ThisName = &AcpiGbl_PredefinedMethods[Index]; if (METHOD_GET_ARG_COUNT (ThisName->Info.ArgumentList) > 0) { AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op, "with arguments"); return; } /* * If no return value is expected from this predefined name, then * it follows that it must be implemented as a control method * (with zero args, because the args > 0 case was handled above) * Examples are: _DIS, _INI, _IRC, _OFF, _ON, _PSx */ if (!ThisName->Info.ExpectedBtypes) { AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op, "with zero arguments"); return; } /* Typecheck the actual object, it is the next argument */ ObjectOp = Op->Asl.Child->Asl.Next; ApCheckObjectType (ThisName->Info.Name, Op->Asl.Child->Asl.Next, ThisName->Info.ExpectedBtypes, ACPI_NOT_PACKAGE_ELEMENT); /* For packages, check the individual package elements */ if (ObjectOp->Asl.ParseOpcode == PARSEOP_PACKAGE) { ApCheckPackage (ObjectOp, ThisName); } }
void ApCheckPredefinedReturnValue ( ACPI_PARSE_OBJECT *Op, ASL_METHOD_INFO *MethodInfo) { UINT32 Index; ACPI_PARSE_OBJECT *ReturnValueOp; const ACPI_PREDEFINED_INFO *ThisName; /* * Check parent method for a match against the predefined name list. * * Note: Disable compiler errors/warnings because any errors will be * caught when analyzing the parent method. Eliminates duplicate errors. */ Gbl_AllExceptionsDisabled = TRUE; Index = ApCheckForPredefinedName (MethodInfo->Op, MethodInfo->Op->Asl.NameSeg); Gbl_AllExceptionsDisabled = FALSE; switch (Index) { case ACPI_EVENT_RESERVED_NAME: /* _Lxx/_Exx/_Wxx/_Qxx methods */ /* No return value expected, warn if there is one */ ApCheckForUnexpectedReturnValue (Op, MethodInfo); return; case ACPI_NOT_RESERVED_NAME: /* No underscore or _Txx or _xxx name not matched */ case ACPI_PREDEFINED_NAME: /* Resource Name or reserved scope name */ case ACPI_COMPILER_RESERVED_NAME: /* A _Txx that was not emitted by compiler */ /* Just return, nothing to do */ return; default: /* A standard predefined ACPI name */ ThisName = &AcpiGbl_PredefinedMethods[Index]; if (!ThisName->Info.ExpectedBtypes) { /* No return value expected, warn if there is one */ ApCheckForUnexpectedReturnValue (Op, MethodInfo); return; } /* Get the object returned, it is the next argument */ ReturnValueOp = Op->Asl.Child; switch (ReturnValueOp->Asl.ParseOpcode) { case PARSEOP_ZERO: case PARSEOP_ONE: case PARSEOP_ONES: case PARSEOP_INTEGER: case PARSEOP_STRING_LITERAL: case PARSEOP_BUFFER: case PARSEOP_PACKAGE: /* Static data return object - check against expected type */ ApCheckObjectType (ThisName->Info.Name, ReturnValueOp, ThisName->Info.ExpectedBtypes, ACPI_NOT_PACKAGE_ELEMENT); /* For packages, check the individual package elements */ if (ReturnValueOp->Asl.ParseOpcode == PARSEOP_PACKAGE) { ApCheckPackage (ReturnValueOp, ThisName); } break; default: /* * All other ops are very difficult or impossible to typecheck at * compile time. These include all Localx, Argx, and method * invocations. Also, NAMESEG and NAMESTRING because the type of * any named object can be changed at runtime (for example, * CopyObject will change the type of the target object.) */ break; } } }
void ApCheckForPredefinedObject ( ACPI_PARSE_OBJECT *Op, char *Name) { UINT32 Index; /* * Check for a real predefined name -- not a resource descriptor name * or a predefined scope name */ Index = ApCheckForPredefinedName (Op, Name); switch (Index) { case ACPI_NOT_RESERVED_NAME: /* No underscore or _Txx or _xxx name not matched */ case ACPI_PREDEFINED_NAME: /* Resource Name or reserved scope name */ case ACPI_COMPILER_RESERVED_NAME: /* A _Txx that was not emitted by compiler */ /* Nothing to do */ return; case ACPI_EVENT_RESERVED_NAME: /* _Lxx/_Exx/_Wxx/_Qxx methods */ /* * These names must be control methods, by definition in ACPI spec. * Also because they are defined to return no value. None of them * require any arguments. */ AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op, "with zero arguments"); return; default: /* A standard predefined ACPI name */ /* * If this predefined name requires input arguments, then * it must be implemented as a control method */ if (PredefinedNames[Index].Info.ParamCount > 0) { AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op, "with arguments"); return; } /* * If no return value is expected from this predefined name, then * it follows that it must be implemented as a control method * (with zero args, because the args > 0 case was handled above) * Examples are: _DIS, _INI, _IRC, _OFF, _ON, _PSx */ if (!PredefinedNames[Index].Info.ExpectedBtypes) { AslError (ASL_ERROR, ASL_MSG_RESERVED_METHOD, Op, "with zero arguments"); return; } /* Typecheck the actual object, it is the next argument */ ApCheckObjectType (PredefinedNames[Index].Info.Name, Op->Asl.Child->Asl.Next, PredefinedNames[Index].Info.ExpectedBtypes); return; } }
void ApCheckPredefinedReturnValue ( ACPI_PARSE_OBJECT *Op, ASL_METHOD_INFO *MethodInfo) { UINT32 Index; ACPI_PARSE_OBJECT *ReturnValueOp; /* Check parent method for a match against the predefined name list */ Index = ApCheckForPredefinedName (MethodInfo->Op, MethodInfo->Op->Asl.NameSeg); switch (Index) { case ACPI_EVENT_RESERVED_NAME: /* _Lxx/_Exx/_Wxx/_Qxx methods */ /* No return value expected, warn if there is one */ ApCheckForUnexpectedReturnValue (Op, MethodInfo); return; case ACPI_NOT_RESERVED_NAME: /* No underscore or _Txx or _xxx name not matched */ case ACPI_PREDEFINED_NAME: /* Resource Name or reserved scope name */ case ACPI_COMPILER_RESERVED_NAME: /* A _Txx that was not emitted by compiler */ /* Just return, nothing to do */ return; default: /* A standard predefined ACPI name */ if (!PredefinedNames[Index].Info.ExpectedBtypes) { /* No return value expected, warn if there is one */ ApCheckForUnexpectedReturnValue (Op, MethodInfo); return; } /* Get the object returned, it is the next argument */ ReturnValueOp = Op->Asl.Child; switch (ReturnValueOp->Asl.ParseOpcode) { case PARSEOP_ZERO: case PARSEOP_ONE: case PARSEOP_ONES: case PARSEOP_INTEGER: case PARSEOP_STRING_LITERAL: case PARSEOP_BUFFER: case PARSEOP_PACKAGE: /* Static data return object - check against expected type */ ApCheckObjectType (PredefinedNames[Index].Info.Name, ReturnValueOp, PredefinedNames[Index].Info.ExpectedBtypes); break; default: /* * All other ops are very difficult or impossible to typecheck at * compile time. These include all Localx, Argx, and method * invocations. Also, NAMESEG and NAMESTRING because the type of * any named object can be changed at runtime (for example, * CopyObject will change the type of the target object.) */ break; } } }
static void ApCheckPackageList ( const char *PredefinedName, ACPI_PARSE_OBJECT *ParentOp, const ACPI_PREDEFINED_INFO *Package, UINT32 StartIndex, UINT32 ParentCount) { ACPI_PARSE_OBJECT *SubPackageOp = ParentOp; ACPI_PARSE_OBJECT *Op; ACPI_STATUS Status; UINT32 Count; UINT32 ExpectedCount; UINT32 i; UINT32 j; /* * Validate each subpackage in the parent Package * * Note: We ignore NULL package elements on the assumption that * they will be initialized by the BIOS or other ASL code. */ for (i = 0; (i < ParentCount) && SubPackageOp; i++) { /* Each object in the list must be of type Package */ Status = ApCheckObjectType (PredefinedName, SubPackageOp, ACPI_RTYPE_PACKAGE, i + StartIndex); if (ACPI_FAILURE (Status)) { goto NextSubpackage; } /* Examine the different types of expected subpackages */ Op = SubPackageOp->Asl.Child; /* First child is the package length */ Count = (UINT32) Op->Asl.Value.Integer; Op = Op->Asl.Next; /* The subpackage must have at least one element */ if (!Count) { ApZeroLengthPackage (PredefinedName, SubPackageOp); goto NextSubpackage; } /* * Decode the package type. * PTYPE2 indicates that a "package of packages" is expected for * this name. The various flavors of PTYPE2 indicate the number * and format of the subpackages. */ switch (Package->RetInfo.Type) { case ACPI_PTYPE2: case ACPI_PTYPE2_PKG_COUNT: case ACPI_PTYPE2_REV_FIXED: /* Each subpackage has a fixed number of elements */ ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; if (Count < ExpectedCount) { ApPackageTooSmall (PredefinedName, SubPackageOp, Count, ExpectedCount); break; } if (Count > ExpectedCount) { ApPackageTooLarge (PredefinedName, SubPackageOp, Count, ExpectedCount); break; } ApCheckPackageElements (PredefinedName, Op, Package->RetInfo.ObjectType1, Package->RetInfo.Count1, Package->RetInfo.ObjectType2, Package->RetInfo.Count2); break; case ACPI_PTYPE2_FIX_VAR: /* * Each subpackage has a fixed number of elements and an * optional element */ ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; if (Count < ExpectedCount) { ApPackageTooSmall (PredefinedName, SubPackageOp, Count, ExpectedCount); break; } ApCheckPackageElements (PredefinedName, Op, Package->RetInfo.ObjectType1, Package->RetInfo.Count1, Package->RetInfo.ObjectType2, Count - Package->RetInfo.Count1); break; case ACPI_PTYPE2_FIXED: /* Each subpackage has a fixed length */ ExpectedCount = Package->RetInfo2.Count; if (Count < ExpectedCount) { ApPackageTooSmall (PredefinedName, SubPackageOp, Count, ExpectedCount); break; } if (Count > ExpectedCount) { ApPackageTooLarge (PredefinedName, SubPackageOp, Count, ExpectedCount); break; } /* Check each object/type combination */ for (j = 0; j < ExpectedCount; j++) { ApCheckObjectType (PredefinedName, Op, Package->RetInfo2.ObjectType[j], j); Op = Op->Asl.Next; } break; case ACPI_PTYPE2_MIN: /* Each subpackage has a variable but minimum length */ ExpectedCount = Package->RetInfo.Count1; if (Count < ExpectedCount) { ApPackageTooSmall (PredefinedName, SubPackageOp, Count, ExpectedCount); break; } /* Check the type of each subpackage element */ ApCheckPackageElements (PredefinedName, Op, Package->RetInfo.ObjectType1, Count, 0, 0); break; case ACPI_PTYPE2_COUNT: /* * First element is the (Integer) count of elements, including * the count field (the ACPI name is NumElements) */ Status = ApCheckObjectType (PredefinedName, Op, ACPI_RTYPE_INTEGER, 0); /* We must have an integer count from above (otherwise, use Count) */ if (ACPI_SUCCESS (Status)) { /* * Make sure package is large enough for the Count and is * is as large as the minimum size */ ExpectedCount = (UINT32) Op->Asl.Value.Integer; if (Count < ExpectedCount) { ApPackageTooSmall (PredefinedName, SubPackageOp, Count, ExpectedCount); break; } else if (Count > ExpectedCount) { ApPackageTooLarge (PredefinedName, SubPackageOp, Count, ExpectedCount); } /* Some names of this type have a minimum length */ if (Count < Package->RetInfo.Count1) { ExpectedCount = Package->RetInfo.Count1; ApPackageTooSmall (PredefinedName, SubPackageOp, Count, ExpectedCount); break; } Count = ExpectedCount; } /* Check the type of each subpackage element */ Op = Op->Asl.Next; ApCheckPackageElements (PredefinedName, Op, Package->RetInfo.ObjectType1, (Count - 1), 0, 0); break; default: break; } NextSubpackage: SubPackageOp = SubPackageOp->Asl.Next; } }
void ApCheckPackage ( ACPI_PARSE_OBJECT *ParentOp, const ACPI_PREDEFINED_INFO *Predefined) { ACPI_PARSE_OBJECT *Op; const ACPI_PREDEFINED_INFO *Package; ACPI_STATUS Status; UINT32 ExpectedCount; UINT32 Count; UINT32 i; /* The package info for this name is in the next table entry */ Package = Predefined + 1; /* First child is the package length */ Op = ParentOp->Asl.Child; Count = (UINT32) Op->Asl.Value.Integer; /* * Many of the variable-length top-level packages are allowed to simply * have zero elements. This allows the BIOS to tell the host that even * though the predefined name/method exists, the feature is not supported. * Other package types require one or more elements. In any case, there * is no need to continue validation. */ if (!Count) { switch (Package->RetInfo.Type) { case ACPI_PTYPE1_FIXED: case ACPI_PTYPE1_OPTION: case ACPI_PTYPE2_PKG_COUNT: case ACPI_PTYPE2_REV_FIXED: ApZeroLengthPackage (Predefined->Info.Name, ParentOp); break; case ACPI_PTYPE1_VAR: case ACPI_PTYPE2: case ACPI_PTYPE2_COUNT: case ACPI_PTYPE2_FIXED: case ACPI_PTYPE2_MIN: case ACPI_PTYPE2_FIX_VAR: default: break; } return; } /* Get the first element of the package */ Op = Op->Asl.Next; /* Decode the package type */ switch (Package->RetInfo.Type) { case ACPI_PTYPE1_FIXED: /* * The package count is fixed and there are no subpackages * * If package is too small, exit. * If package is larger than expected, issue warning but continue */ ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; if (Count < ExpectedCount) { goto PackageTooSmall; } else if (Count > ExpectedCount) { ApPackageTooLarge (Predefined->Info.Name, ParentOp, Count, ExpectedCount); } /* Validate all elements of the package */ ApCheckPackageElements (Predefined->Info.Name, Op, Package->RetInfo.ObjectType1, Package->RetInfo.Count1, Package->RetInfo.ObjectType2, Package->RetInfo.Count2); break; case ACPI_PTYPE1_VAR: /* * The package count is variable, there are no subpackages, * and all elements must be of the same type */ for (i = 0; i < Count; i++) { ApCheckObjectType (Predefined->Info.Name, Op, Package->RetInfo.ObjectType1, i); Op = Op->Asl.Next; } break; case ACPI_PTYPE1_OPTION: /* * The package count is variable, there are no subpackages. * There are a fixed number of required elements, and a variable * number of optional elements. * * Check if package is at least as large as the minimum required */ ExpectedCount = Package->RetInfo3.Count; if (Count < ExpectedCount) { goto PackageTooSmall; } /* Variable number of sub-objects */ for (i = 0; i < Count; i++) { if (i < Package->RetInfo3.Count) { /* These are the required package elements (0, 1, or 2) */ ApCheckObjectType (Predefined->Info.Name, Op, Package->RetInfo3.ObjectType[i], i); } else { /* These are the optional package elements */ ApCheckObjectType (Predefined->Info.Name, Op, Package->RetInfo3.TailObjectType, i); } Op = Op->Asl.Next; } break; case ACPI_PTYPE2_REV_FIXED: /* First element is the (Integer) revision */ ApCheckObjectType (Predefined->Info.Name, Op, ACPI_RTYPE_INTEGER, 0); Op = Op->Asl.Next; Count--; /* Examine the subpackages */ ApCheckPackageList (Predefined->Info.Name, Op, Package, 1, Count); break; case ACPI_PTYPE2_PKG_COUNT: /* First element is the (Integer) count of subpackages to follow */ Status = ApCheckObjectType (Predefined->Info.Name, Op, ACPI_RTYPE_INTEGER, 0); /* We must have an integer count from above (otherwise, use Count) */ if (ACPI_SUCCESS (Status)) { /* * Count cannot be larger than the parent package length, but * allow it to be smaller. The >= accounts for the Integer above. */ ExpectedCount = (UINT32) Op->Asl.Value.Integer; if (ExpectedCount >= Count) { goto PackageTooSmall; } Count = ExpectedCount; } Op = Op->Asl.Next; /* Examine the subpackages */ ApCheckPackageList (Predefined->Info.Name, Op, Package, 1, Count); break; case ACPI_PTYPE2_UUID_PAIR: /* The package contains a variable list of UUID Buffer/Package pairs */ /* The length of the package must be even */ if (Count & 1) { sprintf (MsgBuffer, "%4.4s: Package length, %d, must be even.", Predefined->Info.Name, Count); AslError (ASL_ERROR, ASL_MSG_RESERVED_PACKAGE_LENGTH, ParentOp->Asl.Child, MsgBuffer); } /* Validate the alternating types */ for (i = 0; i < Count; ++i) { if (i & 1) { ApCheckObjectType (Predefined->Info.Name, Op, Package->RetInfo.ObjectType2, i); } else { ApCheckObjectType (Predefined->Info.Name, Op, Package->RetInfo.ObjectType1, i); } Op = Op->Asl.Next; } break; case ACPI_PTYPE2: case ACPI_PTYPE2_FIXED: case ACPI_PTYPE2_MIN: case ACPI_PTYPE2_COUNT: case ACPI_PTYPE2_FIX_VAR: /* * These types all return a single Package that consists of a * variable number of subpackages. */ /* Examine the subpackages */ ApCheckPackageList (Predefined->Info.Name, Op, Package, 0, Count); break; default: return; } return; PackageTooSmall: ApPackageTooSmall (Predefined->Info.Name, ParentOp, Count, ExpectedCount); }