parisc: use constants instead of numbers in assembly
Helge Deller
maintainerPATCH 1/1 parisc: use constants instead of numbers in assembly
A few small fixups:
* _PAGE_SIZE_ENCODING_DEFAULT is wrong here, as one might assume that it's possible to define the page size that way. This is wrong. Use 0 instead.
* use constants instead of hardcoded numerical values in depi and extru while building the PFN out of the pte entry
* use SHRREG instead of extru (iitlba expects the PFN at bits {7..26})
Still wondering why we can use the same register (pte) as extru source and target register, but it seems to work on PA1.1 and PA2.0...
Signed-off-by Helge Deller <[email protected]>
arch/parisc/kernel/entry.S +4 -4
@@ -563,8 +563,8 @@ /* Get rid of prot bits and convert to page addr for iitlba */ - depi _PAGE_SIZE_ENCODING_DEFAULT,31,ASM_PFN_PTE_SHIFT,\pte - extru \pte,24,25,\pte + depi 0,31,ASM_PFN_PTE_SHIFT,\pte + SHRREG \pte,(ASM_PFN_PTE_SHIFT-(31-26)),\pte .endm /* This is for ILP32 PA2.0 only. The TLB insertion needs
@@ -1337,8 +1337,8 @@ nadtlb_check_flush_11: /* Get rid of prot bits and convert to page addr for idtlba */ - depi 0,31,12,pte - extru pte,24,25,pte + depi 0,31,ASM_PFN_PTE_SHIFT,pte + SHRREG pte,(ASM_PFN_PTE_SHIFT-(31-26)),pte mfsp %sr1,t0 /* Save sr1 so we can use it in tlb inserts */ mtsp spc,%sr1