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 * Macro used to lower TL when a MMU trap is caused by
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 * Macro used to lower TL when a MMU trap is caused by
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 * the userspace register window spill or fill handler.
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 * the userspace register window spill or fill handler.
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 */
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 */
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.macro HANDLE_MMU_TRAPS_FROM_SPILL_OR_FILL
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.macro HANDLE_MMU_TRAPS_FROM_SPILL_OR_FILL
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    rdpr %tl, %g1
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    rdpr %tl, %g1
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    dec %g1
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    sub %g1, 1, %g2
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    brz %g1, 0f         ! if TL was 1, skip
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    brz %g2, 0f         ! if TL was 1, skip
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    nop
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    nop
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    wrpr %g1, 0, %tl        ! TL--
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    wrpr %g2, 0, %tl        ! TL--
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    rdpr %tt, %g2
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    rdpr %tt, %g3
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    cmp %g2, TT_SPILL_1_NORMAL
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    cmp %g3, TT_SPILL_1_NORMAL
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    be 0f               ! trap from spill_1_normal
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    be 0f               ! trap from spill_1_normal?
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    cmp %g2, TT_FILL_1_NORMAL
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    cmp %g3, TT_FILL_1_NORMAL
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    be 0f               ! trap from fill_1_normal
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    bne,a 0f            ! trap from fill_1_normal? (negated condition)
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    inc %g1
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    wrpr %g1, 0, %tl        ! another trap, TL++
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    wrpr %g1, 0, %tl        ! TL++
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0:
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0:
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.endm
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.endm
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#endif /* __ASM__ */
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#endif /* __ASM__ */
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