Fix AT register in context.S
@@ -26,13 +26,13 @@ switch_context:
sw sp, 13*4(sp)
la s0, root_page_table_ptr
- lw at, 0(s0)
- sw at, 4(sp)
+ lw AT, 0(s0)
+ sw AT, 4(sp)
// restore to's registers
lw sp, 0(a1)
- lw at, 4(sp)
- sw at, 0(s0)
+ lw AT, 4(sp)
+ sw AT, 0(s0)
lw ra, 0(sp)
lw s0, 2*4(sp)
