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Kernel: Usespace threads now have an interrupt stack

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Bananymous
2023-04-25 14:48:58 +03:00
parent f1a0625b61
commit dc0f8b383f
2 changed files with 34 additions and 14 deletions
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20
kernel/kernel/Thread.cpp
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@@ -38,6 +38,12 @@ namespace Kernel
ASSERT_NOT_REACHED();
}, (void*)entry, process
));
thread->m_interrupt_stack = kmalloc(m_interrupt_stack_size, PAGE_SIZE);
if (thread->m_interrupt_stack == nullptr)
{
delete thread;
return BAN::Error::from_errno(ENOMEM);
}
process->mmu().map_range(thread->stack_base(), thread->stack_size(), MMU::Flags::UserSupervisor | MMU::Flags::ReadWrite | MMU::Flags::Present);
return thread;
}
@@ -75,6 +81,8 @@ namespace Kernel
Thread::~Thread()
{
dprintln("thread {} ({}) exit", tid(), m_process->pid());
if (m_interrupt_stack)
kfree(m_interrupt_stack);
kfree(m_stack_base);
}
@@ -83,6 +91,18 @@ namespace Kernel
thread_jump_userspace(rsp(), rip);
}
void Thread::validate_stack() const
{
if (stack_base() <= m_rsp && m_rsp <= stack_base() + stack_size())
return;
if (interrupt_stack_base() <= m_rsp && m_rsp <= interrupt_stack_base() + interrupt_stack_size())
return;
Kernel::panic("rsp {8H}, stack {8H}->{8H}, interrupt_stack {8H}->{8H}", m_rsp,
stack_base(), stack_base() + stack_size(),
interrupt_stack_base(), interrupt_stack_base() + interrupt_stack_size()
);
}
void Thread::on_exit()
{
if (m_process)