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Kernel: save and load sse context in more spaces

This commit is contained in:
Bananymous 2025-04-02 12:51:27 +03:00
parent be786be67d
commit a0123e7c2d
4 changed files with 15 additions and 0 deletions
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2
kernel/arch/i686/Thread.S
View File

@ -36,6 +36,8 @@ start_kernel_thread:
.global start_userspace_thread
start_userspace_thread:
call load_thread_sse
call get_thread_start_sp
movl %eax, %esp

2
kernel/arch/x86_64/Thread.S
View File

@ -27,6 +27,8 @@ start_kernel_thread:
.global start_userspace_thread
start_userspace_thread:
call load_thread_sse
call get_thread_start_sp
movq %rax, %rsp

4
kernel/kernel/IDT.cpp
View File

@ -354,6 +354,8 @@ namespace Kernel
asm volatile("cli; 1: hlt; jmp 1b");
}
Thread::current().save_sse();
ASSERT(InterruptController::get().is_in_service(IRQ_TIMER - IRQ_VECTOR_BASE));
InterruptController::get().eoi(IRQ_TIMER - IRQ_VECTOR_BASE);
@ -365,6 +367,8 @@ namespace Kernel
auto& current_thread = Thread::current();
if (current_thread.can_add_signal_to_execute())
current_thread.handle_signal();
Thread::current().load_sse();
}
extern "C" void cpp_irq_handler(uint32_t irq)

7
kernel/kernel/Thread.cpp
View File

@ -34,6 +34,11 @@ namespace Kernel
return Thread::current().userspace_stack_top() - 4 * sizeof(uintptr_t);
}
extern "C" void load_thread_sse()
{
Thread::current().load_sse();
}
static pid_t s_next_tid = 1;
alignas(16) static uint8_t s_default_sse_storage[512];
@ -168,6 +173,7 @@ namespace Kernel
{
auto* thread = TRY(create_userspace(m_process, m_process->page_table()));
save_sse();
memcpy(thread->m_sse_storage, m_sse_storage, sizeof(m_sse_storage));
thread->setup_exec_impl(
@ -202,6 +208,7 @@ namespace Kernel
thread->m_interrupt_stack.sp = sp;
thread->m_interrupt_stack.ss = 0x10;
save_sse();
memcpy(thread->m_sse_storage, m_sse_storage, sizeof(m_sse_storage));
#if ARCH(x86_64)