Resolves a vtable slot to its mangled symbol for MWCC PowerPC classes.
npx skills add https://github.com/freeqaz/rb3 --skill resolve-vcall
Please help me install this Agent Skill. Skill: resolve-vcall Source: https://github.com/freeqaz/rb3/tree/main/.claude/skills/resolve-vcall Command: npx skills add https://github.com/freeqaz/rb3 --skill resolve-vcall
Resolve a single vcall slot to its function symbol for a named class. In MWCC PowerPC binaries, the vtable layout can be opaque, and pinpointing the exact symbol a call resolves to helps verify overrides and detect misalignments.
Provide CLASS, SUB_OBJECT_OFFSET, and SLOT to retrieve the corresponding mangled symbol from the vtable.
High-intent search queries and answers about installing and using this skill.
To resolve a vtable slot, provide the class name, sub-object offset, and slot index to retrieve the corresponding mangled symbol from the vtable. This validates slot indices against the initial vtable header to avoid misreads.
A vcall mismatch occurs when objdiff shows an r12 load from a vptr that differs from the expected function. You pinpoint the exact function by resolving the specific vtable slot using the class name and sub-object offset.
Vtable slot validation for sub-objects checks the specified slot index against the initial vtable header, including RTTI and offset_to_top values, ensuring you accurately retrieve the correct mangled function symbol.
You need to provide the class name, the sub-object offset, and the slot index. These three inputs allow the tool to locate the exact vtable entry and return the corresponding mangled symbol.
Yes, you can use this to debug objdiff mismatches by verifying specific slots in both primary and sub-object vtables. It resolves the exact function symbol a vcall targets to detect overrides and misalignments.
Your vtable slot index misreads the function symbol because the initial vtable header containing RTTI and offset_to_top values was not accounted for. Validating the slot index against this header prevents the misalignment.
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