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wasm-link: ensure TLS global when resolved

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When a linked object contains references to the __tls_base symbol,
we lazily create this symbol. However, we wouldn't create the corresponding
Wasm global. This meant its address wasn't set correctly as well as fail
to output it into the `Names` section.
This commit is contained in:
Luuk de Gram 2023-11-06 17:09:42 +01:00
parent 2a32264533
commit f3626eb816
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1 changed files with 8 additions and 0 deletions
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8
src/link/Wasm.zig
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@ -1242,6 +1242,14 @@ fn resolveLazySymbols(wasm: *Wasm) !void {
if (wasm.undefs.fetchSwapRemove(name_offset)) |kv| {
const loc = try wasm.createSyntheticSymbolOffset(name_offset, .global);
try wasm.discarded.putNoClobber(wasm.base.allocator, kv.value, loc);
_ = wasm.resolved_symbols.swapRemove(kv.value);
const symbol = loc.getSymbol(wasm);
symbol.setFlag(.WASM_SYM_VISIBILITY_HIDDEN);
symbol.index = @intCast(wasm.imported_globals_count + wasm.wasm_globals.items.len);
try wasm.wasm_globals.append(wasm.base.allocator, .{
.global_type = .{ .valtype = .i32, .mutable = true },
.init = .{ .i32_const = undefined },
});
}
}
}