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Kernel: Remove some more unnecessary Thread members.

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This commit is contained in:
Andreas Kling 2019-04-20 19:29:48 +02:00
parent b2ebf6c798
commit 5562ab3f5a
2 changed files with 6 additions and 13 deletions
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12
Kernel/Thread.cpp
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@ -44,14 +44,12 @@ 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...
dword stack_bottom = (dword)kmalloc_eternal(default_kernel_stack_size);
m_stack_top0 = (stack_bottom + default_kernel_stack_size) & 0xffffff8;
m_tss.esp = m_stack_top0;
m_tss.esp = (stack_bottom + default_kernel_stack_size) & 0xffffff8;
} else {
// Ring3 processes need a separate stack for Ring0.
m_kernel_stack = kmalloc(default_kernel_stack_size);
m_stack_top0 = ((dword)m_kernel_stack + default_kernel_stack_size) & 0xffffff8;
m_tss.ss0 = 0x10;
m_tss.esp0 = m_stack_top0;
m_tss.esp0 = ((dword)m_kernel_stack + default_kernel_stack_size) & 0xffffff8;
}
// HACK: Ring2 SS in the TSS is the current PID.
@ -433,8 +431,7 @@ void Thread::make_userspace_stack_for_main_thread(Vector<String> arguments, Vect
{
auto* region = m_process.allocate_region(LinearAddress(), default_userspace_stack_size, "stack");
ASSERT(region);
m_stack_top3 = region->laddr().offset(default_userspace_stack_size).get();
m_tss.esp = m_stack_top3;
m_tss.esp = region->laddr().offset(default_userspace_stack_size).get();
char* stack_base = (char*)region->laddr().get();
int argc = arguments.size();
@ -480,8 +477,7 @@ void Thread::make_userspace_stack_for_secondary_thread(void *argument)
{
auto* region = m_process.allocate_region(LinearAddress(), default_userspace_stack_size, String::format("Thread %u Stack", tid()));
ASSERT(region);
m_stack_top3 = region->laddr().offset(default_userspace_stack_size).get();
m_tss.esp = m_stack_top3;
m_tss.esp = region->laddr().offset(default_userspace_stack_size).get();
// NOTE: The stack needs to be 16-byte aligned.
push_value_on_stack((dword)argument);

7
Kernel/Thread.h
View file

@ -45,7 +45,7 @@ public:
void finalize();
enum State {
enum State : byte {
Invalid = 0,
Runnable,
Running,
@ -78,7 +78,6 @@ public:
dword frame_ptr() const { return m_tss.ebp; }
dword stack_ptr() const { return m_tss.esp; }
dword stack_top() const { return m_tss.ss == 0x10 ? m_stack_top0 : m_stack_top3; }
word selector() const { return m_far_ptr.selector; }
TSS32& tss() { return m_tss; }
@ -143,8 +142,6 @@ private:
FarPtr m_far_ptr;
dword m_ticks { 0 };
dword m_ticks_left { 0 };
dword m_stack_top0 { 0 };
dword m_stack_top3 { 0 };
qword m_wakeup_time { 0 };
dword m_times_scheduled { 0 };
dword m_pending_signals { 0 };
@ -161,8 +158,8 @@ private:
Vector<int> m_select_read_fds;
Vector<int> m_select_write_fds;
Vector<int> m_select_exceptional_fds;
State m_state { Invalid };
FPUState* m_fpu_state { nullptr };
State m_state { Invalid };
bool m_select_has_timeout { false };
bool m_has_used_fpu { false };
bool m_was_interrupted_while_blocked { false };