Find CEngineServer_GetFrameTimeAmnesty (Agent fallback)

Recover the single output of find-CEngineServer_GetFrameTimeAmnesty-inlined using the assigned IDA Pro MCP database. The preprocessor ida_preprocessor_scripts/find-CEngineServer_GetFrameTimeAmnesty-inlined.py remains the normal fast path.

Realworld Function References

Read the applicable current inputs and the annotated references below. Source-owned 14192 YAMLs and stored disassembly are reference-build evidence; verify addresses, slot indices and semantics in the assigned binary. Never copy a reference target YAML into the active output directory as a substitute for analysis.

• bin_artifacts/14192/engine/CEngineServer_vtable.windows.yaml
• bin_artifacts/14192/engine/CEngineServer_vtable.linux.yaml
• bin_artifacts/14192/engine/GetFrameTimeAmnesty.windows.yaml
• bin_artifacts/14192/engine/GetFrameTimeAmnesty.linux.yaml

Output inventory

Module: engine. Platform scope: Windows and Linux. Analyze only the platform of the assigned database; the runner invokes platforms separately.

Platform	Output filename	14192 reference entry	Reference slot / offset
windows	CEngineServer_GetFrameTimeAmnesty.windows.yaml	0x180075980	26 / 0xd0
linux	CEngineServer_GetFrameTimeAmnesty.linux.yaml	0x538910	26 / 0xd0

Output metadata uses exactly vtable_name=CEngineServer_vtable; the concrete table artifact is CEngineServer_vtable.<platform>.yaml. Generate a validated function signature after identifying the current entry.

Step 0. Bind the task and skip an existing output

Call idb_list and reuse the database assigned by the runner. Confirm the input path, image base and platform with IDA; do not open, switch, close or quit the runner's database. The binary is engine2.dll / libengine2.so. Resolve the active artifact module directory from CS2VIBE_ARTIFACT_DIR (also visible inside IDA's environment). If unset, stop and request the assigned artifact directory; never write YAML beside the binary. For the current platform, skip the output if it already exists there and parses as a non-empty mapping. Do not overwrite a result produced by an earlier alternative.

Load the platform-specific configured inputs named above from that active artifact root, not from the 14192 reference tree. Resolve ../client or ../server relative to the active module directory. Missing required inputs must be reported; do not open another binary to reconstruct them.

Step 1. Locate and verify the target

Search for !engine_frametime_warnings_enable and inspect its code references and their callers. The target is the CEngineServer_vtable interface entry implementing the frame-time warning amnesty query, not any arbitrary user of the warning convar.

Handle both compiler shapes. If the warning/amnesty operation is inside the vfunc, verify it there. If it resides in a standalone GetFrameTimeAmnesty, load that helper through /get-func-from-yaml when its current artifact exists, otherwise identify it from the string, and find the wrapper that calls or tail-jumps to it. On 14192 both platforms use a tiny wrapper forwarding the boolean parameter, at reference slot 26. Do not emit the helper as the wrapper, and do not claim removal because the string is absent from the wrapper. The -inlined suffix describes the preferred finder path; this fallback must also recover the non-inlined shape when the noinline producer failed.

GetFrameTimeAmnesty is an optional helper input: its YAML may legitimately be absent. Only the vtable is a configured required input.

Step 2. Handle missing IDA function boundaries

A vtable YAML can exist even though IDA has not defined its target functions. For each plausible entry, verify the live 64-bit slot pointer, executable segment and decoded instruction boundary. If no function owns the entry, use conservative function definition and wait for analysis, then require the resulting function start to equal the slot pointer. Never delete bytes, split an existing function, or normalize an interior pointer to a neighbouring function's start. If a function already owns an unexpected interior entry, inspect and report the boundary conflict instead of forcing it.

Treat short adjusting thunks as legitimate vtable entrypoints. Follow their destinations for semantic verification, but preserve the slot's actual entry address in the artifact. Distinct-address candidate counts are not vtable slot counts. Confirm the target's slot by live pointer equality; use /get-vtable-index where helpful, and report multiple plausible slots rather than selecting an arbitrary duplicate.

Signatures and YAML output

Use /generate-signature-for-function on the verified current entry. Validate uniqueness in the assigned binary; do not copy the baseline signature. Keep the finder's existing generation options: these targets do not enable func_sig_allow_across_function_boundary, func_sig_resolve_jmp_thunk or func_sig_skip_degenerate; do not add those directives. If the fully wildcarded head is ambiguous, compare the competing matches and refine only distinguishing wildcard bytes within the verified function body, following the canonical refinement in ida_analyze_util.preprocess_gen_func_sig_via_mcp. Revalidate the pattern at the exact entry. If no valid unique body signature can be obtained, report the unresolved output instead of extending into neighbouring functions. Use /write-vfunc-as-yaml through its IDA py_eval implementation in the assigned session to write the YAML; do not substitute CLI shell or file-edit tools. Parameters:

• artifact_name=CEngineServer_GetFrameTimeAmnesty and func_name=CEngineServer_GetFrameTimeAmnesty.
• func_addr: the verified concrete entry in the assigned binary; emit func_va, func_rva = VA - image_base and the verified current func_size. Never emit a bodyless slot-only result for this target.
• vtable_name=CEngineServer_vtable, current vfunc_index and vfunc_offset = index * 8.
• vfunc_sig=None and vfunc_sig_disp=None; this target describes a concrete function, not a caller's vcall.
• func_sig: the validated current function signature.

Write only CEngineServer_GetFrameTimeAmnesty.windows.yaml / CEngineServer_GetFrameTimeAmnesty.linux.yaml as applicable, under the active artifact module directory. The trusted analyzer validates and canonicalizes this semantic payload. Read back the output and verify its name, fields, slot (when applicable), RVA and platform against the live database before reporting success.

Failure handling

If required inputs are missing, candidates remain ambiguous, entry recovery is unsafe, or no standalone entry can be verified, stop and report the exact missing output plus the semantic evidence examined. Do not invent a signature/address, create a placeholder YAML, disable config entries, or claim that a failed lookup proves the game removed the function. Do not run the failed preprocessor as the fallback's solution.