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Kernel: Handle running programs that don't have a TLS image

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Programs without a PT_TLS header won't have a master TLS image for us
to copy, so we shouldn't try to copy the m_master_tls_region then.
This commit is contained in:
Andreas Kling 2019-09-07 17:06:25 +02:00
parent a635619cc0
commit 899233a925
Notes: sideshowbarker 2024-07-19 12:14:05 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/899233a9253
1 changed files with 2 additions and 1 deletions
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Kernel/Thread.cpp
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@ -637,5 +637,6 @@ void Thread::make_thread_specific_region(Badge<Process>)
auto* thread_local_storage = (u8*)((u8*)thread_specific_data) - align_up_to(process().m_master_tls_size, process().m_master_tls_alignment);
m_thread_specific_data = VirtualAddress((u32)thread_specific_data);
thread_specific_data->self = thread_specific_data;
memcpy(thread_local_storage, process().m_master_tls_region->vaddr().as_ptr(), process().m_master_tls_size);
if (process().m_master_tls_size)
memcpy(thread_local_storage, process().m_master_tls_region->vaddr().as_ptr(), process().m_master_tls_size);
}