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sched: implement user-configurable fs and gs segment base addresses

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This commit is contained in:
max 🍓
2026-03-18 21:07:05 +00:00
parent 63703a3d34
commit 24f9ef85bf
14 changed files with 274 additions and 9 deletions
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2
syscall/dispatch.c
View File

@@ -11,6 +11,8 @@ static const virt_addr_t syscall_table[] = {
SYSCALL_TABLE_ENTRY(TASK_CREATE_THREAD, task_create_thread),
SYSCALL_TABLE_ENTRY(TASK_GET_ADDRESS_SPACE, task_get_address_space),
SYSCALL_TABLE_ENTRY(THREAD_START, thread_start),
SYSCALL_TABLE_ENTRY(THREAD_CONFIG_GET, thread_config_get),
SYSCALL_TABLE_ENTRY(THREAD_CONFIG_SET, thread_config_set),
SYSCALL_TABLE_ENTRY(VM_OBJECT_CREATE, vm_object_create),
SYSCALL_TABLE_ENTRY(VM_OBJECT_READ, vm_object_read),
SYSCALL_TABLE_ENTRY(VM_OBJECT_WRITE, vm_object_write),

72
syscall/task.c
View File

@@ -287,3 +287,75 @@ kern_status_t sys_thread_start(kern_handle_t thread_handle)
return KERN_OK;
}
kern_status_t sys_thread_config_get(
kern_handle_t thread_handle,
kern_config_key_t key,
void *ptr,
size_t len)
{
unsigned long flags;
struct task *self = current_task();
if (!validate_access_w(self, ptr, len)) {
return KERN_MEMORY_FAULT;
}
struct object *thread_obj;
handle_flags_t thread_flags;
task_lock_irqsave(self, &flags);
kern_status_t status = task_resolve_handle(
self,
thread_handle,
&thread_obj,
&thread_flags);
if (status != KERN_OK) {
task_unlock_irqrestore(self, flags);
return status;
}
struct thread *thread = thread_cast(thread_obj);
task_unlock_irqrestore(self, flags);
status = thread_config_get(thread, key, ptr, len);
object_unref(thread_obj);
return status;
}
kern_status_t sys_thread_config_set(
kern_handle_t thread_handle,
kern_config_key_t key,
const void *ptr,
size_t len)
{
unsigned long flags;
struct task *self = current_task();
if (!validate_access_w(self, ptr, len)) {
return KERN_MEMORY_FAULT;
}
struct object *thread_obj;
handle_flags_t thread_flags;
task_lock_irqsave(self, &flags);
kern_status_t status = task_resolve_handle(
self,
thread_handle,
&thread_obj,
&thread_flags);
if (status != KERN_OK) {
task_unlock_irqrestore(self, flags);
return status;
}
struct thread *thread = thread_cast(thread_obj);
task_unlock_irqrestore(self, flags);
status = thread_config_set(thread, key, ptr, len);
object_unref(thread_obj);
return status;
}