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* VADDR and TAG will be preserved and not clobbered by this macro.
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#define KERN_TSB_LOOKUP_TL1(VADDR, TAG, REG1, REG2, REG3, REG4, OK_LABEL) \
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or REG1, %lo(swapper_tsb), REG1; \
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srlx VADDR, PAGE_SHIFT, REG2; \
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and REG2, (KERNEL_TSB_NENTRIES - 1), REG2; \
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be,a,pt %xcc, OK_LABEL; \