Fix k210 alignment issue when push cmdargs when sys_exec

wyfcyx · wyfcyx · commit a43dbc4e34ae · 2021-02-28T08:51:31.000+08:00
diff --git a/os/src/task/task.rs b/os/src/task/task.rs
@@ -142,6 +142,8 @@ impl TaskControlBlock {
             }
             *translated_refmut(memory_set.token(), p as *mut u8) = 0;
         }
+        // make the user_sp aligned to 8B for k210 platform
+        user_sp -= user_sp % core::mem::size_of::<usize>();
 
         // **** hold current PCB lock
         let mut inner = self.acquire_inner_lock();

Original file line number	Diff line number	Diff line change
`@@ -142,6 +142,8 @@ impl TaskControlBlock {`
`142`	`142`	`}`
`143`	`143`	`translated_refmut(memory_set.token(), p as mut u8) = 0;`
`144`	`144`	`}`
	`145`	`+ // make the user_sp aligned to 8B for k210 platform`
	`146`	`+ user_sp -= user_sp % core::mem::size_of::<usize>();`
`145`	`147`
`146`	`148`	`// **** hold current PCB lock`
`147`	`149`	`let mut inner = self.acquire_inner_lock();`