Kernel+Toolchain: Use .init_array section for global constructors

Before this change, our dynamic linker's global constructor handler relied on the GNU linker implicitly including the content of `.ctors` section inside `.init_array`. The mold linker does not do this, so global constructors would fail to be called in the mold-built userland. There is no point in sticking to `.ctors`, as most other systems already use the superior `.init_array` scheme. This commit changes the kernel linker script to not discard this new section, and enables it by default in our toolchain.
Author: https://github.com/BertalanD Commit: 5576e9c4c5 Pull-request: https://github.com/SerenityOS/serenity/pull/12049 Reviewed-by: https://github.com/ADKaster Reviewed-by: https://github.com/IdanHo Reviewed-by: https://github.com/alimpfard Reviewed-by: https://github.com/bgianfo ✅ Reviewed-by: https://github.com/linusg ✅
2025-09-10 03:26:10 +00:00 · 2022-01-19 19:12:50 +01:00 · 2022-01-19 19:12:50 +01:00 · 5576e9c4c5 · 2024-07-17 20:19:13 +09:00
commit 5576e9c4c5
parent eeb74e2578
3 changed files with 4 additions and 1 deletions
--- a/Kernel/linker.ld
+++ b/Kernel/linker.ld
@ -59,10 +59,12 @@ SECTIONS
    {
        start_heap_ctors = .;
        *libkernel_heap.a:*(.ctors)
+        *libkernel_heap.a:*(.init_array)
        end_heap_ctors = .;

        start_ctors = .;
        *(.ctors)
+        *(.init_array)
        end_ctors = .;

        *(.rodata*)