diff options
Diffstat (limited to 'arch/xtensa/kernel/entry.S')
| -rw-r--r-- | arch/xtensa/kernel/entry.S | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index db5c1765b413..ab7904fd027f 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -789,36 +789,32 @@ ENTRY(debug_exception) movi a2, 1 << PS_EXCM_BIT or a2, a0, a2 - movi a0, debug_exception # restore a3, debug jump vector wsr a2, ps - xsr a0, SREG_EXCSAVE + XCHAL_DEBUGLEVEL /* Switch to kernel/user stack, restore jump vector, and save a0 */ bbsi.l a2, PS_UM_BIT, 2f # jump if user mode addi a2, a1, -16-PT_SIZE # assume kernel stack +3: + l32i a0, a3, DT_DEBUG_SAVE + s32i a1, a2, PT_AREG1 s32i a0, a2, PT_AREG0 movi a0, 0 - s32i a1, a2, PT_AREG1 s32i a0, a2, PT_DEPC # mark it as a regular exception + xsr a3, SREG_EXCSAVE + XCHAL_DEBUGLEVEL xsr a0, depc s32i a3, a2, PT_AREG3 s32i a0, a2, PT_AREG2 mov a1, a2 + + rsr a2, ps + bbsi.l a2, PS_UM_BIT, _user_exception j _kernel_exception 2: rsr a2, excsave1 l32i a2, a2, EXC_TABLE_KSTK # load kernel stack pointer - s32i a0, a2, PT_AREG0 - movi a0, 0 - s32i a1, a2, PT_AREG1 - s32i a0, a2, PT_DEPC - xsr a0, depc - s32i a3, a2, PT_AREG3 - s32i a0, a2, PT_AREG2 - mov a1, a2 - j _user_exception + j 3b /* Debug exception while in exception mode. */ 1: j 1b // FIXME!! |