Replace all local calling convention declarations (const fc/tc/sc)
with hook.cc.fastcall/thiscall/stdcall from zhook. Migrate remaining
17 hook.fastcall() inline asm call sites to hook.call() with typed
function pointers.
Replace hand-written inline asm blocks with hook.call() typed function
pointer dispatch across 10 files. Also migrates 4 D3D9 COM vtable
NULL-dispatch blocks using ?*anyopaque optional pointers.
Net removal: ~350 lines of inline asm replaced by single-line calls.
Root cause: hook.fastcall used "r" constraints + explicit MOV to set
ECX/EDX. LLVM can allocate "r" inputs to clobbered registers, causing
cross-assignment (ecx_in→EDX, edx_in→ECX) or function address stomping
when func lands in ECX/EDX. Debug works by luck (trivial regalloc);
Release optimizes aggressively and hits the conflicts.
Fix: explicit "{ecx}", "{edx}", "{eax}" register constraints in zhook
fastcall — compiler places values directly, no MOV needed, no ambiguity.
Also fix 9 inline asm blocks across main.zig, interact.zig,
screenshot.zig, markers.zig missing ECX/EDX clobbers after CALL
instructions. Without clobbers the optimizer assumes registers retain
input values after the call — stale reuse in release builds.
Other changes in this commit:
- Rename markers→worldmarkers (build flag, DLL, Lua table)
- Rename assetfix→looseassets
- lua.zig: add .never_tail to pushcclosure, pcall, openlib, pushnumber
- Move internal marker functions into WorldMarkers Lua table via openlib
- Remove unused GetCurrentAreaId function
- Fix cleanup_file_handle_hook.original() → .callOriginal()
Move Lua C API wrappers from main.zig's lua struct into src/lua.zig
so both main.zig and markers.zig import from the same source. Remove
duplicate lapi struct from markers.zig.
Add DLL-side permission gating on WorldMarker/ClearWorldMarker: calls
WoW's IsPartyLeader (0x4e9130) and IsRaidOfficer (0x4bb910) C
functions directly. Requires party leader, raid leader, or raid
assist to place or clear markers. SetMarkerDef/ClearMarkerDef remain
ungated (addon validates sender before calling).
MarcelineVQ