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Kernel: Properly update the stored thread rbp when switching contexts

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Tim Schumacher 2023-04-17 15:10:40 +02:00 • committed by Andreas Kling
parent 50b7183bd1
commit 0ee476948b
1 changed files with 2 additions and 0 deletions
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Kernel/Arch/x86_64/Processor.cpp
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@ -1723,6 +1723,7 @@ void Processor::switch_context(Thread*& from_thread, Thread*& to_thread)
"shrq $32, %%rbx \n" "shrq $32, %%rbx \n"
"movl %%ebx, %[tss_rsp0h] \n" "movl %%ebx, %[tss_rsp0h] \n"
"movq %[to_rsp], %%rsp \n" "movq %[to_rsp], %%rsp \n"
"movq %%rbp, %[from_rbp] \n"
"pushq %[to_thread] \n" "pushq %[to_thread] \n"
"pushq %[from_thread] \n" "pushq %[from_thread] \n"
"pushq %[to_rip] \n" "pushq %[to_rip] \n"
@ -1748,6 +1749,7 @@ void Processor::switch_context(Thread*& from_thread, Thread*& to_thread)
"popq %%rbx \n" "popq %%rbx \n"
"popfq \n" "popfq \n"
: [from_rsp] "=m" (from_thread->regs().rsp), : [from_rsp] "=m" (from_thread->regs().rsp),
[from_rbp] "=m" (from_thread->regs().rbp),
[from_rip] "=m" (from_thread->regs().rip), [from_rip] "=m" (from_thread->regs().rip),
[tss_rsp0l] "=m" (m_tss.rsp0l), [tss_rsp0l] "=m" (m_tss.rsp0l),
[tss_rsp0h] "=m" (m_tss.rsp0h), [tss_rsp0h] "=m" (m_tss.rsp0h),