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ch4 ok on qemu/k210 && Remove some comments.

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This commit is contained in:
Yifan Wu 2020-12-08 01:35:08 +08:00
parent 485db04a2b
commit 9e861c2819
8 changed files with 0 additions and 48 deletions
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9
os/src/task/task.rs
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@ -22,20 +22,15 @@ impl TaskControlBlock {
self.memory_set.token()
}
pub fn new(elf_data: &[u8], app_id: usize) -> Self {
//println!("into TCB::new");
// memory_set with elf program headers/trampoline/trap context/user stack
let (memory_set, user_sp, entry_point) = MemorySet::from_elf(elf_data);
//println!("user_sp={:#x},entry_point={:#}", user_sp, entry_point);
let trap_cx_ppn = memory_set
.translate(VirtAddr::from(TRAP_CONTEXT).into())
.unwrap()
.ppn();
//println!("trap_cx_ppn={:?}", trap_cx_ppn);
let task_status = TaskStatus::Ready;
// map a kernel-stack in kernel space
//println!("mapping kernel-stack!");
let (kernel_stack_bottom, kernel_stack_top) = kernel_stack_position(app_id);
//println!("kernel_stack={:#x},{:#x}", kernel_stack_bottom, kernel_stack_top);
KERNEL_SPACE
.lock()
.insert_framed_area(
@ -44,10 +39,7 @@ impl TaskControlBlock {
MapPermission::R | MapPermission::W,
);
let task_cx_ptr = (kernel_stack_top - core::mem::size_of::<TaskContext>()) as *mut TaskContext;
//println!("task_cx size={}", core::mem::size_of::<TaskContext>());
//println!("init task_cx, ptr={:p}", task_cx_ptr);
unsafe { *task_cx_ptr = TaskContext::goto_trap_return(); }
//println!("after init task_cx");
let task_control_block = Self {
task_cx_ptr: task_cx_ptr as usize,
task_status,
@ -56,7 +48,6 @@ impl TaskControlBlock {
base_size: user_sp,
};
// prepare TrapContext in user space
//println!("preparing trap_cx");
let trap_cx = task_control_block.get_trap_cx();
*trap_cx = TrapContext::app_init_context(
entry_point,