target-sparc: replace the last tlb entry when no free entries left
Implement the behavior described in the chapter 13.9.11 of UltraSPARC T1™ Supplement to the UltraSPARC Architecture 2005: "If a TLB Data-In replacement is attempted with all TLB entries locked and valid, the last TLB entry (entry 63) is replaced." Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
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@ -246,9 +246,11 @@ static void replace_tlb_1bit_lru(SparcTLBEntry *tlb,
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}
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#ifdef DEBUG_MMU
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DPRINTF_MMU("%s lru replacement failed: no entries available\n", strmmu);
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DPRINTF_MMU("%s lru replacement: no free entries available, "
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"replacing the last one\n", strmmu);
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#endif
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/* error state? */
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/* corner case: the last entry is replaced anyway */
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replace_tlb_entry(&tlb[63], tlb_tag, tlb_tte, env1);
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}
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#endif
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