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| author | Drew Stratford <drewstratford@outlook.com> | 2019-09-04 14:31:38 +1200 |
|---|---|---|
| committer | Andreas Kling <awesomekling@gmail.com> | 2019-09-05 16:37:09 +0200 |
| commit | 259a1d56b04809690716fe0576fad9ea12782ce9 (patch) | |
| tree | aaa41d51efd7e97e35feb21ba01911572800cadb /Kernel/Thread.cpp | |
| parent | bf43d94a2f0fc761158b0049e97fb69d8d273c8c (diff) | |
| download | serenity-259a1d56b04809690716fe0576fad9ea12782ce9.zip | |
Thread: added member m_kernel_stack_top.
This value stores the top of a threads kernel_stack.
Diffstat (limited to 'Kernel/Thread.cpp')
| -rw-r--r-- | Kernel/Thread.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp index c90a796805..f9061c5930 100644 --- a/Kernel/Thread.cpp +++ b/Kernel/Thread.cpp @@ -57,14 +57,16 @@ Thread::Thread(Process& process) // FIXME: This memory is leaked. // But uh, there's also no kernel process termination, so I guess it's not technically leaked... m_kernel_stack_base = (u32)kmalloc_eternal(default_kernel_stack_size); - m_tss.esp = (m_kernel_stack_base + default_kernel_stack_size) & 0xfffffff8u; + m_kernel_stack_top = (m_kernel_stack_base + default_kernel_stack_size) & 0xfffffff8u; + m_tss.esp = m_kernel_stack_top; } else { // Ring3 processes need a separate stack for Ring0. m_kernel_stack_region = MM.allocate_kernel_region(default_kernel_stack_size, String::format("Kernel Stack (Thread %d)", m_tid)); m_kernel_stack_base = m_kernel_stack_region->vaddr().get(); + m_kernel_stack_top = m_kernel_stack_region->vaddr().offset(default_kernel_stack_size).get() & 0xfffffff8u; m_tss.ss0 = 0x10; - m_tss.esp0 = m_kernel_stack_region->vaddr().offset(default_kernel_stack_size).get() & 0xfffffff8u; + m_tss.esp0 = m_kernel_stack_top; } // HACK: Ring2 SS in the TSS is the current PID. |