Module lc3_ensemble::ast

Components relating to the abstract syntax trees (ASTs) used in representing assembly instructions.

These components together are used to construct…

• asm::AsmInstr (a data structure holding an assembly source code instruction),
• asm::Directive (a data structure holding an assembly source code directive),
• and sim::SimInstr (a data structure holding a bytecode instruction).

Modules

• asm
  This module holds the AST for statements from assembly source code.
• reg_consts
  Register constants!
• sim
  This module is used for holding simulation instructions (SimInstr), which are instructions that directly map to bytecode.

Structs

• Label
  A label.
• Offset
  A value representing an offset or an immediate value.
• Reg
  A register. Must be between 0 and 7.

Enums

• ImmOrReg
  A value representing either an immediate value or a register.
• OffsetNewErr
  The errors that can result from calling Offset::new.
• PCOffset
  An offset or a label.

Type Aliases

• CondCode
  A condition code (used for BR), must be between 0 and 7.
• IOffset
  A value representing a signed offset or a signed immediate value.
• TrapVect8
  An unsigned 8-bit trap vector (used for TRAP).