diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trampoline.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/trampoline.S b/kernel/trampoline.S index f47c3ff..b113bf6 100644 --- a/kernel/trampoline.S +++ b/kernel/trampoline.S @@ -70,7 +70,7 @@ uservec: # make tp hold the current hartid, from p->tf->kernel_hartid ld tp, 32(a0) - # remember the address of usertrap(), p->tf->kernel_trap + # load the address of usertrap(), p->tf->kernel_trap ld t0, 16(a0) # restore kernel page table from p->tf->kernel_satp @@ -79,7 +79,7 @@ uservec: sfence.vma zero, zero # a0 is no longer valid, since the kernel page - # table does not specially map p->td. + # table does not specially map p->tf. # jump to usertrap(), which does not return jr t0 @@ -89,8 +89,8 @@ userret: # userret(TRAPFRAME, pagetable) # switch from kernel to user. # usertrapret() calls here. - # a0: TRAPFRAME, in user page table - # a1: user page table, for satp + # a0: TRAPFRAME, in user page table. + # a1: user page table, for satp. # switch to the user page table. csrw satp, a1 |