Sail ISA Specification Language

Tool

First seen 7/3/2026

Last seen 8/6/2026

Evidence 6 chunks

NEIGHBORHOOD

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RELATIONSHIPS

30 connections

BNF Grammar implements → 4e

Sail ISA Specification Language is defined by a BNF grammar covering all its syntactic constructs.

Let Binding implements → 3e

Sail implements let bindings both as expressions and as top-level definitions.

Pattern Matching implements → 3e

Sail implements pattern matching with rich atomic patterns including wildcards, literals, identifiers, and struct patterns.

Termination Measure implements → 2e

Sail implements termination measures for recursive functions both inline and as separate top-level definitions.

Attribute Annotation implements → 2e

Sail implements attribute annotations that can be attached to definitions and expressions.

Type Quantifier implements → 2e

Sail implements type quantifiers via forall binders in type schemes.

Function Definition implements → 2e

Sail implements function definitions with optional recursion measures and multiple clauses.

Value Specification implements → 2e

Sail implements value specifications for declaring types and optional external bindings of functions.

CPU Verification ← uses 90% 2e

Sail ISA specifications are used in CPU verification workflows.

Mapping Definition implements → 2e

Sail implements bidirectional mapping definitions with optional type schemes.

Expression Language implements → 2e

Sail implements a rich expression language including assignments, let bindings, conditionals, and returns.

Sail implements register types both as type-level constructs and top-level register definitions.

Union Type implements → 1e

Sail implements union (variant) types with optional type parameters.

Overload Definition implements → 1e

Sail implements overload definitions allowing a name to be resolved to multiple implementations.

Scattered Definition implements → 1e

Sail implements scattered definitions allowing constructs to be defined across multiple locations in a specification.

Vector Type implements → 1e

Sail implements vector types with indexing, slicing, and functional update expressions.

Bitvector Literal implements → 1e

Sail implements bitvector literals in both binary and hexadecimal notation.

ISA specification implements → 98% 1e

Sail is a specification language designed to implement formal ISA specifications.

Extern Binding implements → 1e

Sail implements extern bindings to map Sail identifiers to backend-specific string names.

ISA Semantics for ARMv8-A, RISC-V, and CHERI-MIPS (armstrong:popl19:2019) ← introduces 92% 1e

The paper presents ISA semantics using the Sail language for ARMv8-A, RISC-V, and CHERI-MIPS.

Detailed Models of ISAs: From Pseudocode to Formal Semantics (armstrong:arw:2018) ← uses 93% 1e

The paper uses Sail as the target formal language for ISA modeling.

Isla: Integrating Full-Scale ISA Semantics and Axiomatic Concurrency Models (armstrong:cav:2021) ← uses 93% 1e

Isla builds on Sail ISA specifications.

ISA Semantics implements → 97% 1e

Sail is used to express formal ISA semantics for various architectures.

Type System implements → 1e

Sail implements a type system expressed through type schemes, kinds, and quantifiers in its grammar.

Type Variable implements → 1e

Sail supports type variables as a first-class syntactic element in its type grammar.

Kind Annotation implements → 1e

Sail supports kind annotations on type variables, with kinds including Int, Type, Order, and Bool.

Bitfield Type implements → 1e

Sail implements bitfield types as named definitions with a base type and field body.

Effect System implements → 1e

Sail implements an effect system with explicit effect sets and a pure annotation in type schemes.

Struct Type implements → 1e

Sail implements struct types as named record types with typed fields.

Enum Type implements → 1e

Sail implements enum types with optional associated functions and expressions.