RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 08:48:11 +00:00
Code Issues Activity Actions

Kernel: Allocate kernel signal stacks using the region allocator as well.

Browse source
This commit is contained in:
Andreas Kling 2019-05-14 12:06:09 +02:00
parent c8a216b107
commit 486c675850
3 changed files with 7 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

13
Kernel/Thread.cpp
View file

@ -79,11 +79,6 @@ Thread::~Thread()
if (selector())
gdt_free_entry(selector());
if (m_kernel_stack_for_signal_handler) {
kfree(m_kernel_stack_for_signal_handler);
m_kernel_stack_for_signal_handler = nullptr;
}
}
void Thread::unblock()
@ -360,14 +355,14 @@ ShouldUnblockThread Thread::dispatch_signal(byte signal)
m_signal_stack_user_region = m_process.allocate_region(LinearAddress(), default_userspace_stack_size, "Signal stack (user)");
ASSERT(m_signal_stack_user_region);
}
if (!m_kernel_stack_for_signal_handler) {
m_kernel_stack_for_signal_handler = kmalloc(default_kernel_stack_size);
ASSERT(m_kernel_stack_for_signal_handler);
if (!m_kernel_stack_for_signal_handler_region) {
m_kernel_stack_for_signal_handler_region = MM.allocate_kernel_region(default_kernel_stack_size, String::format("Kernel Stack (Thread %d)", m_tid));
m_kernel_stack_for_signal_handler_region->commit();
}
m_tss.ss = 0x23;
m_tss.esp = m_signal_stack_user_region->laddr().offset(default_userspace_stack_size).get();
m_tss.ss0 = 0x10;
m_tss.esp0 = (dword)m_kernel_stack_for_signal_handler + default_kernel_stack_size;
m_tss.esp0 = m_kernel_stack_for_signal_handler_region->laddr().offset(default_kernel_stack_size).get();
push_value_on_stack(0);
} else {