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fix: force verified x86 fastcall ABI for 2.4-B1 GC

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Dusk-92
2026-09-03 10:34:29 +02:00
parent 762034301a
commit 232f37d762
1 changed files with 7 additions and 7 deletions
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experiments/wp24b-gc/main.zig
+7 -7
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@@ -30,10 +30,10 @@ const BATCH_HEADROOM: u32 = 128 * 1024;
const EXPECTED_IMAGE_BASE: usize = 0x00400000;
const EXPECTED_IMAGE_SIZE: u32 = 0x0092B000;
const CollectFn = fn (u32) callconv(hook.cc.fastcall) void;
const LuaCloseFn = fn (u32) callconv(hook.cc.fastcall) void;
const SweepAllFn = fn (u32, u32) callconv(hook.cc.fastcall) void;
const RemoveObjectsFn = fn (u32, u32, u32) callconv(hook.cc.fastcall) u32;
const CollectFn = fn (u32) callconv(X86_FASTCALL) void;
const LuaCloseFn = fn (u32) callconv(X86_FASTCALL) void;
const SweepAllFn = fn (u32, u32) callconv(X86_FASTCALL) void;
const RemoveObjectsFn = fn (u32, u32, u32) callconv(X86_FASTCALL) u32;
const lua_gc_full_collection: *const CollectFn = @ptrFromInt(0x6F73E0);
const lua_gc_shrink_memory: *const CollectFn = @ptrFromInt(0x6F7370);
@@ -201,7 +201,7 @@ fn nativeFallback(L: u32) void {
collect_hook.callOriginal(.{L});
}
fn collectGarbageDetour(L: u32) callconv(hook.cc.fastcall) void {
fn collectGarbageDetour(L: u32) callconv(X86_FASTCALL) void {
if (closing_lua) {
collect_hook.callOriginal(.{L});
return;
@@ -304,7 +304,7 @@ fn collectGarbageDetour(L: u32) callconv(hook.cc.fastcall) void {
writeU32(g + GS_GCTHRESHOLD, totalbytes + BATCH_HEADROOM);
}
fn luaCloseDetour(L: u32) callconv(hook.cc.fastcall) void {
fn luaCloseDetour(L: u32) callconv(X86_FASTCALL) void {
// lua_close may run native sweep paths that bypass luaC_collectgarbage.
// Reconnect every private fragment while the old Lua state is still valid.
closing_lua = true;
@@ -332,7 +332,7 @@ fn install() void {
installed = true;
}
const version: [*:0]const u8 = "2.4-B-gc-safe-sweep";
const version: [*:0]const u8 = "2.4-B1-gc-safe-sweep-abi";
pub export fn WeirdPerformanceGC24B_GetVersion() callconv(.c) [*:0]const u8 {
return version;