RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 03:57:44 +00:00
Code Issues Activity Actions

Kernel: Add x86_64 support for fork()

Browse source
This commit is contained in:
Gunnar Beutner 2021-06-29 02:56:07 +02:00 • committed by Andreas Kling
parent 811f9d562d
commit df9e73de25
4 changed files with 42 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

16
Kernel/Arch/x86/i386/Processor.cpp
View file

@ -17,7 +17,6 @@ namespace Kernel {
#define ENTER_THREAD_CONTEXT_ARGS_SIZE (2 * 4) // to_thread, from_thread
extern "C" void thread_context_first_enter(void);
extern "C" void do_assume_context(Thread* thread, u32 flags);
extern "C" void exit_kernel_thread(void);
// clang-format off
@ -236,21 +235,6 @@ void Processor::switch_context(Thread*& from_thread, Thread*& to_thread)
Processor::current().restore_in_critical(to_thread->saved_critical());
}
void Processor::assume_context(Thread& thread, FlatPtr flags)
{
dbgln_if(CONTEXT_SWITCH_DEBUG, "Assume context for thread {} {}", VirtualAddress(&thread), thread);
VERIFY_INTERRUPTS_DISABLED();
Scheduler::prepare_after_exec();
// in_critical() should be 2 here. The critical section in Process::exec
// and then the scheduler lock
VERIFY(Processor::current().in_critical() == 2);
do_assume_context(&thread, flags);
VERIFY_NOT_REACHED();
}
UNMAP_AFTER_INIT void Processor::initialize_context_switching(Thread& initial_thread)
{
VERIFY(initial_thread.process().is_kernel_process());