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LibC/DynamicLoader: Add support for dynamically loaded TLS

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Previously I failed to dlopen if any of the objects contained TLS
section
This commit is contained in:
Bananymous
2026-03-17 20:01:51 +02:00
parent 05b2424fca
commit 1d07d8e08e
5 changed files with 193 additions and 70 deletions
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18
kernel/kernel/Process.cpp
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@@ -379,7 +379,7 @@ namespace Kernel
const auto [master_addr, master_size] = master_tls;
ASSERT(master_size % alignof(uthread) == 0);
const size_t tls_size = master_size + PAGE_SIZE;
const size_t tls_size = master_size + sizeof(uthread);
auto region = TRY(MemoryBackedRegion::create(
page_table,
@@ -408,28 +408,26 @@ namespace Kernel
bytes_copied += to_copy;
}
const uthread uthread {
auto uthread = TRY(BAN::UniqPtr<struct uthread>::create());
*uthread = {
.self = reinterpret_cast<struct uthread*>(region->vaddr() + master_size),
.master_tls_addr = reinterpret_cast<void*>(master_addr),
.master_tls_size = master_size,
.master_tls_module_count = 1,
.dynamic_tls = nullptr,
.cleanup_stack = nullptr,
.id = 0,
.errno_ = 0,
.cancel_type = 0,
.cancel_state = 0,
.canceled = 0,
.dtv = { 0, region->vaddr() }
};
const uintptr_t dtv[2] { 1, region->vaddr() };
TRY(region->copy_data_to_region(
master_size,
reinterpret_cast<const uint8_t*>(&uthread),
sizeof(uthread)
));
TRY(region->copy_data_to_region(
master_size + sizeof(uthread),
reinterpret_cast<const uint8_t*>(&dtv),
sizeof(dtv)
reinterpret_cast<const uint8_t*>(uthread.ptr()),
sizeof(struct uthread)
));
TLSResult result;