assembly language
Enable an agent to identify an assembly-language dialect, assess whether its source can be interpreted and translated for a specified target, and determine which modifications or uses are justified.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to identify an assembly-language dialect, assess whether its source can be interpreted and translated for a specified target, and determine which modifications or uses are justified.
Assembly language is an architecture-specific programming language that represents machine instructions and operands symbolically, usually alongside labels and assembler directives, for translation into machine code by an assembler.
It can be Identify a source dialect and enumerate the target assumptions needed to interpret it.; Check mnemonic, operand and directive usage against a specified dialect and target profile.; Expand assembly-time constructs and inspect how statements map to emitted instructions and data.; Assemble source in a controlled environment and inspect symbols, sections, relocations and diagnostics.; Translate between dialects while recording semantic differences and unresolved equivalence claims.; Assess whether a proposed edit preserves instruction behavior, layout constraints and interface obligations..
Distinguishing features
Ordinary executable statements name target instructions and operands, although macros and pseudo-instructions can prevent a one-statement-to-one-instruction correspondence.
Source interpretation depends on an identified instruction set and dialect; a mnemonic alone does not establish a compatible language.
The source contains symbolic names and assembly-time constructs, distinguishing it from encoded machine instructions.
Register and addressing notation expose target-specific execution resources more directly than typical higher-level languages.
Disassembler output qualifies as reusable source only when its syntax and retained information satisfy a particular assembler.
Scope
+ Relationships among an assembly-language dialect, instruction-set architecture, architecture revision and execution mode
+ Mnemonic, operand, register, literal, label and expression notation
+ Assembler directives, macros, conditional assembly and pseudo-instructions
+ Rules for resolving symbols, selecting encodings and emitting sections or relocation records
+ Requirements for interpreting, translating and modifying assembly source under an identified toolchain
- Processor hardware design and microarchitecture except where they constrain source interpretation
- Machine-code formats and instruction-set specifications as independently maintained things
- Assembler, linker and debugger implementations as software products
- Application-specific algorithms and program behavior beyond their expression in assembly
- Natural-language speaker populations, orthographies and official-language status
- Compiler intermediate representations and higher-level programming languages
Characteristics
- Target instruction-set binding
- Architecture, revision, execution mode and enabled extensions Determines which instructions, registers and operand forms can be interpreted.
- Dialect and syntax profile
- Named dialect plus operand order, register notation, literal syntax and case rules Superficially similar statements can be parsed differently across dialects.
- Assembler compatibility
- Assembler implementation, version, options and documented support Makes claims about accepted syntax and emitted output reproducible.
- Assembly-time capabilities
- Supported directives, expressions, macros, conditional assembly and pseudo-instructions Identifies transformations that occur before executable instructions exist.
- Emission context
- Object format or raw-image format, section conventions and relocation model Determines how symbolic source becomes an artifact that can be linked or loaded.
- Address and operand widths
- Bits, qualified by target mode and instruction form Constrains operand interpretation, addressing and representable values.
- Execution prerequisites
- Required privilege level, processor features, runtime environment and interface conventions Separates successful assembly from eligibility to execute in a particular environment.
- Compatibility evidence state
- Unassessed, documented, assembly-tested, execution-tested or contradicted, with explicit scope Prevents a successful test for one configuration from becoming an unsupported general compatibility claim.
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.assembly-language
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 16 findings · 28 questions.
Dialect and target identity Establish which assembly language is meant and the machine context that gives its statements meaning.
Assembly language is a family designation; reliable interpretation requires a dialect and target profile.
Dialect boundaries
Separate family names, syntax variants and implementation-specific language extensions.
Identify dialect authority
Record the evidence that defines the dialect and distinguish documented syntax from inferred source recognition.
- Which dialect, syntax mode and documentation version define the source being modeled? definition
- Which language rules come from an architecture specification, and which come from an assembler implementation? provenance
Architecture profile
Capture the instruction-set and execution-mode assumptions required for interpretation.
Resolve target profile
Bind instruction availability and operand interpretation to a sufficiently precise machine target.
- Which architecture revision, execution mode and optional instruction-set extensions are assumed? definition
- Which source constructs become invalid or change meaning when that profile changes? boundary
Source notation and instruction meaning Describe how text denotes instructions, operands and symbolic values.
Recognizing mnemonics is insufficient when operand order, widths or addressing notation can alter meaning.
Statement and symbol syntax
Identify lexical rules, statement forms and name resolution within source.
Parse statements unambiguously
Record how instructions, labels, literals, comments and expressions are distinguished.
- What are the rules for operand order, register prefixes, numeric literals and comments? definition
- How do case sensitivity, local-label scope and expression precedence affect symbol interpretation? definition
Operands and instruction effects
Connect parsed instructions to target-defined operand forms and execution effects.
Resolve instruction form
Determine the selected instruction form, including implicit operands and width assumptions.
- How are operand widths, addressing modes and overloaded mnemonic forms resolved? definition
- Which explicit and implicit registers, flags, memory locations or control-flow effects must an agent consider before changing this instruction? action
Assembly-time transformation Capture source processing that produces instructions, data and layout before execution.
Assembly source may generate, suppress or rearrange output through constructs that are not machine instructions.
Macros and pseudo-instructions
Distinguish directly encoded instructions from source constructs expanded by the assembler.
Trace source expansion
Record expansion rules and configuration-dependent differences in emitted code.
- Which apparent instructions are aliases, pseudo-instructions or macros, and what determines their expansion? definition
- Can an expansion introduce temporary-register use, extra instructions or mode-dependent behavior that affects a proposed edit? action
Directives and layout
Model assembly-time control of sections, data, alignment and conditional inclusion.
Account for emitted layout
Identify which constructs emit bytes, reserve space or alter assembly state.
- Which directives control section selection, alignment, data encoding, includes and conditional assembly? definition
- How many bytes are emitted or reserved by each relevant construct under the selected configuration? measurement
- Which include files, macro definitions and external build values are required to reproduce that layout? provenance
Artifact and runtime contracts Describe the interfaces between assembly source, emitted artifacts and its intended execution environment.
Source can assemble successfully while producing an artifact that cannot link, load or satisfy its calling environment.
Symbols, relocations and output
Capture the assembly language's expression of linkable names and unresolved addresses.
Resolve artifact obligations
Record symbol visibility, relocation assumptions and output-format requirements without treating the linker as part of the language.
- How does the dialect declare exported, imported and local symbols, and which expressions may remain unresolved after assembly? definition
- Which object format, relocation types or load-address assumptions are required for the intended output? boundary
Calling and execution environment
Record external conventions and prerequisites that constrain usable assembly programs.
Check runtime obligations
Distinguish language acceptance from compliance with calling conventions and execution requirements.
- Which calling convention, register-preservation rules, stack alignment and unwind conventions apply to this use? boundary
- What processor-feature, privilege and environment checks are needed before executing the assembled code? action
Validation and change Define evidence for compatibility, interpretation and preservation of behavior during changes.
Assembly transformations can preserve readable intent while changing encodings, layout or machine-visible effects.
Reproducible translation
Tie acceptance and output claims to documented, repeatable toolchain configurations.
Establish translation evidence
Record the conditions and observations supporting a claim that source translates as intended.
- Which assembler version, options, target settings and input dependencies produced the inspected artifact? provenance
- Do emitted instruction bytes, section sizes and relocation records match the stated expectations? measurement
Porting and semantic preservation
Assess dialect conversion and edits against explicit equivalence requirements.
Bound transformation claims
Specify what a change must preserve and identify differences that require further evidence.
- Must the transformation preserve exact bytes, architectural behavior, interface behavior or another explicitly defined property? boundary
- Which syntax conversions, instruction substitutions or layout changes require assembly comparison, emulation or execution tests before acceptance? action
- Which dependencies on timing, self-modification, hardware state or undocumented behavior remain outside the equivalence evidence? boundary
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This entry covers the family of assembly languages, not a single architecture, assembler dialect or version.
- Syntax can vary within one architecture, as with Intel and AT&T syntax for x86; pseudo-instructions and macros also prevent a universal one-to-one correspondence between source statements and machine instructions.
- These statements are recalled knowledge, not researched findings; exact architecture revisions, assembler behavior and ABI applicability require verification.
- Which of these check these first hold for the sense of assembly language this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- x86 assembly
- Arm assembly
- RISC-V assembly
- MIPS assembly
- PowerPC assembly
- 6502 assembly
- Which of these kinds and varieties hold for the sense of assembly language this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- RISC-V International's instruction-set specifications define the instructions and encodings targeted by RISC-V assemblers; they do not constitute a universal assembly-language standard.
- Arm's Application Binary Interface specifications define interoperability requirements, including procedure-call conventions, for assembly code that interfaces with other compiled code.
- Which of these standards and regulation hold for the sense of assembly language this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Implementing processor startup code, interrupt handlers and low-level operating-system routines.
- Programming microcontrollers and other resource-constrained embedded systems.
- Writing selected performance-critical routines with direct control over instructions and registers.
- Inspectpecting compiled programs through disassembly for debugging and reverse engineering.
- Accessing processor features or instructions that a compiler does not conveniently expose.
- Which of these real-world use hold for the sense of assembly language this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Incorrect memory addressing can cause corruption, crashes or security vulnerabilities.
- Violating calling conventions, stack alignment or register-preservation rules can break interoperability.
- Instructions unavailable on the target processor can cause execution faults.
- Incorrect handling of concurrency, atomic operations or memory ordering can cause intermittent failures.
- Assembler syntax, directives and instruction-set differences can make source code nonportable.
- Which of these failure modes and hazards hold for the sense of assembly language this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- machine code - Machine code consists of encoded instructions executed by a processor; assembly language expresses instructions symbolically in source text.
- assembler - An assembler is a translation tool; assembly language is the language it accepts.
- instruction set architecture - An instruction set architecture specifies software-visible processor behavior; assembly language provides a symbolic notation targeting that architecture.
- high-level programming language - A high-level language generally expresses computation through abstractions less directly tied to a particular processor's instructions and registers.
- disassembly - Disassembly is the process or output of decoding machine code into assembly notation, rather than the language itself.
- natural language - Assembly language is a formal programming language; speaker populations, vernacular varieties and natural-language identifier schemes do not describe it appropriately.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of assembly language this model covers, and on what evidence? provenance
What the second pass must settle
- Does an existing Vercy world model already cover assembly language or its programming-language parent, requiring linkage or reuse rather than a second publication?
- Which documented dialects and assembler versions should serve as researched reference cases for this family-level model?
- How should the catalogue distinguish dialect identity from an assembler's selectable syntax modes and extensions?
- Should assembly-like languages for virtual machines fall within this entry, or be linked as neighboring language families?
- Which architecture manuals and assembler documentation establish authoritative boundaries among instruction aliases, pseudo-instructions, macros and directives?