/*
* badcode.asl
*
* This file contains examples of the extended error checking and
* typechecking capabilities of the iASL compiler. Other ASL compilers
* may ignore these errors completely. Note - this is not an exhaustive
* list of errors detected by iASL, it shows many of the errors that
* are not detected by other ASL compilers.
*
* To compile, use:
* iasl badcode.asl
*/
DefinitionBlock ("badcode.aml", "DSDT", 1, "Intel", "Example", 0x00000001)
{
Name (INT1, 0)
Name (BUF1, Buffer() {0,1,2,3})
Event (EVT1)
// Invalid SyncLevel in Mutex declaration
Mutex (MTX1, 32)
// Integer beyond the table integer size (32 bits)
Name (BIG, 0x1234567887654321)
// CPackage length does not match initializer list length
Name (PKG1, Package(5) {0,1})
// Inadvertent use of single backslash in a string
Name (PATH, Buffer() {"\_SB_.PCI2._CRS"})
// Invalid hex escape sequence
Name (ESC1, "abcdefg\x00hijklmn")
// Field access beyond region bounds
OperationRegion (OPR1, SystemMemory, 0x2000, 6)
Field (OPR1, DWordAcc, NoLock, Preserve)
{
Offset (4),
FLD1, 8
}
// Some address spaces support only ByteAcc or BufferAcc
OperationRegion (OPR2, EmbeddedControl, 0x4000, 8)
Field (OPR2, DWordAcc, NoLock, Preserve)
{
FLD2, 8
}
OperationRegion (OPR3, SMBus, 0x8000, 16)
Field (OPR3, WordAcc, NoLock, Preserve)
{
FLD3, 8
}
// Invalid SyncLevel in method declaration
Method (MTH1, 0, NotSerialized, 32)
{
// Invalid arguments and uninitialized locals
Store (Arg3, Local0)
Store (Local1, Local2)
// Parameter typechecking (MTX1 is invalid type)
Subtract (MTX1, 4, Local3)
// Various invalid parameters
CreateField (BUF1, 0, Subtract (4, 4), FLD1)
// Unchecked mutex and event timeouts
Acquire (MTX1, 100)
Wait (EVT1, 1)
// Result from operation is not used - statement has no effect
Add (INT1, 8)
// Unreachable code
Return (0)
Store (5, INT1)
}
Method (MTH2)
{
// Switch with no Case statements
Switch (ToInteger (INT1))
{
Default
{
}
}
if (LEqual (INT1, 0))
{
Return (INT1)
}
// Fallthrough exit path does not return a value
}
Method (MTH3)
{
// Method MTH2 above does not always return a value
Store (MTH2 (), Local0)
}
// Method MTH4 does not explicitly return a value
Method (MTH4) {Return}
Method (MTH5) {Store (MTH4(), Local0)}
// Invalid _HID values
Device (H1)
{
Name (_HID, "*PNP0C0A") // Illegal leading asterisk
}
Device (H2)
{
Name (_HID, "PNP") // Too short, must be 7 or 8 chars
}
Device (H3)
{
Name (_HID, "MYDEVICE01") // Too long, must be 7 or 8 chars
}
Device (H4)
{
Name (_HID, "acpi0001") // non-hex chars must be uppercase
}
Device (H5)
{
Name (_HID, "PNP-123") // HID must be alphanumeric
}
Device (H6)
{
Name (_HID, "") // Illegal Null HID
Name (_CID, "") // Illegal Null CID
}
// Predefined Name typechecking
Name (_PRW, 4)
Name (_FDI, Buffer () {0})
// Predefined Name argument count validation
// and return value validation
Method (_OSC, 5)
{
}
// Predefined Names that must be implemented as control methods
Name (_L01, 1)
Name (_E02, 2)
Name (_Q03, 3)
Name (_ON, 0)
Name (_INI, 1)
Name (_PTP, 2)
// GPE methods that cause type collision (L vs. E)
Scope (\_GPE)
{
Method (_L1D)
{
}
Method (_E1D)
{
}
}
// Predefined names that should not have a return value
Method (_FDM, 1)
{
Return (Buffer(1){0x33})
}
Method (_Q22)
{
Return ("Unexpected Return Value")
}
// _REG must have a corresponding Operation Region declaration
// within the same scope
Device (EC)
{
Method (_REG, 2)
{
}
}
/*
* Resource Descriptor error checking
*/
Name (RSC1, ResourceTemplate ()
{
// Illegal nested StartDependent macros
StartDependentFn (0, 0)
{
StartDependentFn (0, 0)
{
}
}
// Missing EndDependentFn macro
})
Name (RSC2, ResourceTemplate ()
{
// AddressMin is larger than AddressMax
IO (Decode16,
0x07D0, // Range Minimum
0x03E8, // Range Maximum
0x01, // Alignment
0x20, // Length
)
// Length larger than Min/Max window size
Memory32 (ReadOnly,
0x00001000, // Range Minimum
0x00002000, // Range Maximum
0x00000004, // Alignment
0x00002000, // Length
)
// Min and Max not multiples of alignment value
Memory32 (ReadOnly,
0x00001001, // Range Minimum
0x00002002, // Range Maximum
0x00000004, // Alignment
0x00000200, // Length
)
// 10-bit ISA I/O address has a max of 0x3FF
FixedIO (
0xFFFF, // Address
0x20, // Length
)
// Invalid AccessSize parameter
Register (SystemIO,
0x08, // Bit Width
0x00, // Bit Offset
0x0000000000000100, // Address
0x05 // Access Size
)
// Invalid ResourceType (0xB0)
QWordSpace (0xB0, ResourceConsumer, PosDecode, MinFixed, MaxFixed, 0xA5,
0x0000, // Granularity
0xA000, // Range Minimum
0xBFFF, // Range Maximum
0x0000, // Translation Offset
0x2000, // Length
,, )
// AddressMin is larger than AddressMax
WordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x0000, // Granularity
0x0200, // Range Minimum
0x0100, // Range Maximum
0x0000, // Translation Offset
0x0100, // Length
,, , TypeStatic)
// Length larger than Min/Max window size
DWordSpace (0xC3, ResourceConsumer, PosDecode, MinFixed, MaxFixed, 0xA5,
0x00000000, // Granularity
0x000C8000, // Range Minimum
0x000C9000, // Range Maximum
0x00000000, // Translation Offset
0x00001002, // Length
,, )
// Granularity must be (power-of-two -1)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxNotFixed, NonCacheable, ReadWrite,
0x00000010,
0x40000000,
0xFED9FFFF,
0x00000000,
0xBECA0000)
// Address Min (with zero length) not on granularity boundary
QWordIO (ResourceProducer, MinFixed, MaxNotFixed, PosDecode, EntireRange,
0x0000000000000003, // Granularity
0x0000000000000B02, // Range Minimum
0x0000000000000C00, // Range Maximum
0x0000000000000000, // Translation Offset
0x0000000000000000, // Length
,, , TypeStatic)
// Address Max (with zero length) not on (granularity boundary -1)
QWordMemory (ResourceProducer, PosDecode, MinNotFixed, MaxFixed, Cacheable, ReadWrite,
0x0000000000000001, // Granularity
0x0000000000100000, // Range Minimum
0x00000000002FFFFE, // Range Maximum
0x0000000000000000, // Translation Offset
0x0000000000000000, // Length
,, , AddressRangeMemory, TypeStatic)
// Invalid combination: zero length, both Min and Max are fixed
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x00000000, // Granularity
0x000C8000, // Range Minimum
0x000C8FFF, // Range Maximum
0x00000000, // Translation Offset
0x00000000, // Length
,, )
// Invalid combination: non-zero length, Min Fixed, Max not fixed
DWordIO (ResourceProducer, MinFixed, MaxNotFixed, PosDecode, EntireRange,
0x00000001, // Granularity
0x000C8000, // Range Minimum
0x000C8FFF, // Range Maximum
0x00000000, // Translation Offset
0x00000100, // Length
,, )
// Invalid combination: non-zero length, Min not Fixed, Max fixed
DWordIO (ResourceProducer, MinNotFixed, MaxFixed, PosDecode, EntireRange,
0x00000001, // Granularity
0x000C8000, // Range Minimum
0x000C8FFF, // Range Maximum
0x00000000, // Translation Offset
0x00000200, // Length
,, )
// Granularity must be zero if non-zero length, min/max fixed
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x0000000F, // Granularity
0x000C8000, // Range Minimum
0x000C8FFF, // Range Maximum
0x00000000, // Translation Offset
0x00001000, // Length
,, )
// Null descriptor (intended to be modified at runtime) must
// have a resource tag (to allow it to be modified at runtime)
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x00000000, // Granularity
0x00000000, // Range Minimum
0x00000000, // Range Maximum
0x00000000, // Translation Offset
0x00000000, // Length
,, )
// Missing StartDependentFn macro
EndDependentFn ()
})
}