#include <AArch64BaseInfo.h>

Inheritance diagram for llvm::AArch64NamedImmMapper:

Collaboration diagram for llvm::AArch64NamedImmMapper:

Classes
struct	Mapping
Public Member Functions
template<int N>
	AArch64NamedImmMapper (const Mapping(&Pairs)[N], uint32_t TooBigImm)
StringRef	toString (uint32_t Value, bool &Valid) const
uint32_t	fromString (StringRef Name, bool &Valid) const
bool	validImm (uint32_t Value) const
Protected Attributes
const Mapping *	Pairs
size_t	NumPairs
uint32_t	TooBigImm

Detailed Description

Instances of this class can perform bidirectional mapping from random identifier strings to operand encodings. For example "MSR" takes a named system-register which must be encoded somehow and decoded for printing. This central location means that the information for those transformations is not duplicated and remains in sync.

FIXME: currently the algorithm is a completely unoptimised linear search. Obviously this could be improved, but we would probably want to work out just how often these instructions are emitted before working on it. It might even be optimal to just reorder the tables for the common instructions rather than changing the algorithm.

Definition at line 279 of file AArch64BaseInfo.h.

Constructor & Destructor Documentation

template<int N>

llvm::AArch64NamedImmMapper::AArch64NamedImmMapper	(	const Mapping(&)	Pairs[N],
		uint32_t	TooBigImm
	)		`[inline]`

Definition at line 286 of file AArch64BaseInfo.h.

Member Function Documentation

uint32_t AArch64NamedImmMapper::fromString	(	StringRef	Name,
		bool &	Valid
	)		const

Definition at line 33 of file AArch64BaseInfo.cpp.

References llvm::StringRef::lower(), NumPairs, Pairs, and llvm::AArch64NamedImmMapper::Mapping::Value.

StringRef AArch64NamedImmMapper::toString	(	uint32_t	Value,
		bool &	Valid
	)		const

Definition at line 21 of file AArch64BaseInfo.cpp.

References llvm::AArch64NamedImmMapper::Mapping::Name, NumPairs, and Pairs.

Referenced by DecodeSystemPStateInstruction(), llvm::AArch64InstPrinter::printBarrierOption(), llvm::AArch64InstPrinter::printPrefetchOp(), and llvm::AArch64InstPrinter::printSystemPStateField().

bool AArch64NamedImmMapper::validImm ( uint32_t Value ) const

Many of the instructions allow an alternative assembly form consisting of a simple immediate. Currently the only valid forms are ranges [0, N) where N being 0 indicates no immediate syntax-form is allowed.

Definition at line 46 of file AArch64BaseInfo.cpp.

References TooBigImm.