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Kernel: Save/restore the SSE context on context switch.

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This commit is contained in:
Andreas Kling 2019-03-27 15:27:45 +01:00
parent 44e1e7423f
commit e9f2cc3595
4 changed files with 10 additions and 15 deletions
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6
Kernel/Thread.cpp
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@ -15,7 +15,7 @@ Thread::Thread(Process& process)
{
dbgprintf("Thread: New thread TID=%u in %s(%u)\n", m_tid, process.name().characters(), process.pid());
set_default_signal_dispositions();
memset(&m_fpu_state, 0, sizeof(FPUState));
m_fpu_state = (FPUState*)kmalloc_aligned(sizeof(FPUState), 16);
memset(&m_tss, 0, sizeof(m_tss));
// Only IF is set when a process boots.
@ -68,6 +68,7 @@ Thread::Thread(Process& process)
Thread::~Thread()
{
dbgprintf("~Thread{%p}\n", this);
kfree_aligned(m_fpu_state);
{
InterruptDisabler disabler;
g_threads->remove(this);
@ -493,7 +494,8 @@ Thread* Thread::clone(Process& process)
auto* clone = new Thread(process);
memcpy(clone->m_signal_action_data, m_signal_action_data, sizeof(m_signal_action_data));
clone->m_signal_mask = m_signal_mask;
clone->m_fpu_state = m_fpu_state;
clone->m_fpu_state = (FPUState*)kmalloc_aligned(sizeof(FPUState), 16);
memcpy(clone->m_fpu_state, m_fpu_state, sizeof(FPUState));
clone->m_has_used_fpu = m_has_used_fpu;
return clone;
}