4f13bd6733
A real model conflated an optimized CFG edge with the bytes at its instruction origin. Make provenance explicit and add bounded, batched instruction windows from the existing Kuna CLI, preserving exact bytes, per-window failures and Evidence. Record the task-cost comparison without treating the incomplete machine-path answer as an equal-quality win. Verified 33 focused tests, targeted lint, real stock/patched MCP decoding with mixed success, and a real 4096-row capacity run under the resource observer. BREAKING CHANGE: Experimental operation.address/addresses and block.start become origin_address/origin_addresses and origin_start. Printed CFG target_address becomes target_origin; historical source captures are unchanged. Co-authored-by: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com> Co-authored-by: Kaoru0822 <208281322+kaoru0822-kitauji@users.noreply.github.com>
Atomic RE through Code Mode
This is an in-progress experiment, not an integrated provider release. Branch
experiment/atomic-codemode-20261016 starts at main
42fc6c53ae188978deb3bedfe88287b6b316ba22 and carries the previous atomic-facts
prototype. Historical measurements in ../atomic-re-tools/ retain their original
baselines. No PR or merge is intended.
The goal is a real model completing reverse-engineering questions through composable facts, with Code Mode as the calling adapter. A configured feature flag, a scripted verifier or a small response does not prove that goal.
The reference is Hex-Rays IDA MCP:
an on-demand reference lookup and an execution entrypoint over a richer analysis
API. This experiment uses JavaScript and a QuickJS WASM environment rather than
Python in the host process. It exposes only declared static analysis capabilities.
It does not add target execution, patching or GUI control.
Three boundaries own the implementation:
provider.mjs,native-ir.mjs: existing REA native target/process owners and parsed Kuna string/reference/SSA facts, retained sources, freshness and cleanup.api.mjs: named, validated fact/relationship contracts and session admission. SDK callers, CLI scripts and both MCP adapters use these same methods.executor.mjs,server.mjs,cli.mjs: bounded JavaScript composition and presentation. No analysis is reimplemented in the execution environment.
The complete Code Mode MCP catalog is open_binary, reference,
execute_javascript, close_binary. Setting REA_ATOMIC_ADAPTER=direct exposes
the same fact API as facts_* MCP operations for comparison. This is a distinct
experimental server; the production REA catalog is not filtered or replaced.
Use the pinned Node, an existing REA build and a caller-supplied Kuna 1.833:
npm ci --prefix experiments/atomic-codemode --ignore-scripts
node --test experiments/atomic-codemode/*.test.mjs
REA_KUNA_COMMAND=/absolute/path/to/kuna node experiments/atomic-codemode/server.mjs
The local MCP registration for real model trials is named rea-codemode.
agent-trial.py --mcp-entrypoint /absolute/path/to/server.mjs --server-name rea-codemode --protocol-profile atomic --profile-parent /tmp creates an isolated
configuration, home and empty working directory for the model. Shell/file tools,
web search and delegation are disabled. No repository or oracle is placed in that
workspace. The copied authentication file is removed with the isolated profile.
Model output, actual MCP calls, original errors and usage remain in the trial
directory. REA_ATOMIC_TRACE and REA_ATOMIC_EVIDENCE_DIR retain actual API calls
and complete sources outside the model workspace when explicitly selected by the
evaluator. The ambient environment and credentials are not logged.
Current bounds: 64 MiB guest heap, 32 KiB code/output, 64 host calls per execution, 120 seconds wall deadline and 2 seconds of guest synchronous execution; native requests have existing supervision, an 8 MiB capture budget and 1 GiB function-memory limit. Retained source storage is 64 MiB per target, with two resident indexes (at most 2 MiB diagnostic or 8 MiB native source each). Sources are content-digested and retained until close; explicit evaluator copies survive close. Capacity failures are explicit, not clipped facts. Leases and snapshot handles prevent cross-session joins.
The diagnostic SSA format still has incomplete CFG and phi predecessor coverage.
The opt-in native recovered IR experiment adds full recovered
CFG edges, exact value/operand identities, phi incoming-edge bindings, selected
values/blocks reads and derived control dependence. It requires an explicitly
pinned patched engine; stock Kuna does not gain those capabilities from a wrapper.
Runtime successors, memory aliases and machine-semantic equivalence remain
unknown. Other providers are not yet wired to this experimental service.
The initial actual model comparison favors the focused traditional workflow. The seeded value-origin task has lower cumulative input and wall time through Code Mode, but also exposes an IR-to-machine-path error. An equal-quality whole-task advantage remains unproven; the representation fix needs a new trial.
instructions reads selected machine byte/decode windows through the same
owner. Recovered operations use origin_address and blocks origin_start;
these locations cannot be substituted for machine branch destinations. The
value-origin trial demonstrates why this boundary matters. The experiment
currently has eleven fact methods, still behind the same four-tool Code Mode
catalog.
Completion requires actual model Code Mode use, independently checked task answers, shared atomic/direct/Code Mode semantics, needed relation coverage, failure/cancellation/identity tests, and equivalent completed-task measurements including discovery/retries, actual model usage, cold/warm analysis, CPU and process-family peak memory. Negative cases such as the small SQLite function must remain in the comparison.