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macho linker: adjust symbol priority

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strong symbols always take precedence over weak symbols.
This commit is contained in:
Andrew Kelley
2025-01-17 15:11:21 -08:00
parent acf7043955
commit f7f6217df9
1 changed files with 6 additions and 14 deletions
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20
src/link/MachO/file.zig
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@@ -45,29 +45,21 @@ pub const File = union(enum) {
/// Encodes symbol rank so that the following ordering applies:
/// * strong in object
/// * weak in object
/// * tentative in object
/// * strong in archive/dylib
/// * weak in object
/// * weak in archive/dylib
/// * tentative in object
/// * tentative in archive
/// * unclaimed
/// Ties are broken by file priority.
pub fn getSymbolRank(file: File, args: struct {
archive: bool = false,
weak: bool = false,
tentative: bool = false,
}) u32 {
if (file != .dylib and !args.archive) {
const base: u32 = blk: {
if (args.tentative) break :blk 3;
break :blk if (args.weak) 2 else 1;
};
return (base << 16) + file.getIndex();
}
const base: u32 = blk: {
if (args.tentative) break :blk 3;
break :blk if (args.weak) 2 else 1;
};
return base + (file.getIndex() << 24);
const archive_or_dylib = @as(u32, @intFromBool(file == .dylib or args.archive)) << 29;
const strength: u32 = if (args.tentative) 0b10 << 30 else if (args.weak) 0b01 << 30 else 0b00 << 30;
return strength | archive_or_dylib | file.getIndex();
}
pub fn getAtom(file: File, atom_index: Atom.Index) ?*Atom {