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 <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>

diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 0db9fdc..0f7ff93 100644 (file)
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -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