prometeu-runtime/files/TODOs.md

PR-5.6 — Syscall Multi-Return Tests

Briefing

We must ensure multi-return syscalls behave correctly with the slot-based ABI.

Target

• Add deterministic tests covering multi-return behavior.

Work items

• Create or adapt at least one syscall with ret_slots > 1.

• Add tests:

  • Verify correct stack results after syscall.
  • Verify incorrect caller expectations fail verification.

Acceptance checklist

• Multi-return syscalls behave correctly.
• Verifier catches mismatches.
• cargo test passes.

Tests

• New multi-return syscall tests.

Junie instructions

You MAY:

• Add deterministic tests.
• Use existing syscalls or create a simple test-only syscall.

You MUST NOT:

• Modify syscall semantics to satisfy tests.
• Add nondeterministic behavior.

If unclear:

• Ask before introducing new test syscalls.