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sh: Tidy up NEFF-based sign extension for SH-5.

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This consolidates all of the NEFF-based sign extension for SH-5.
In the future the other SH code will need to make use of this as well,
so make it generic in preparation for more 32/64 consolidation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2009-08-04 17:14:39 +09:00
parent c0fe478dbb
commit c7914834ef
6 changed files with 36 additions and 66 deletions
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11
arch/sh/mm/fault_64.c
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@@ -56,16 +56,7 @@ inline void __do_tlb_refill(unsigned long address,
/*
* Set PTEH register
*/
pteh = address & MMU_VPN_MASK;
/* Sign extend based on neff. */
#if (NEFF == 32)
/* Faster sign extension */
pteh = (unsigned long long)(signed long long)(signed long)pteh;
#else
/* General case */
pteh = (pteh & NEFF_SIGN) ? (pteh | NEFF_MASK) : pteh;
#endif
pteh = neff_sign_extend(address & MMU_VPN_MASK);
/* Set the ASID. */
pteh |= get_asid() << PTEH_ASID_SHIFT;