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From: Jake Burkholder <jake@FreeBSD.org>
Date: Sun, 30 Sep 2001 12:41:20 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/sparc64/sparc64 exception.s genassym.c trap.c
         src/sys/sparc64/include intr_machdep.h
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jake        2001/09/30 12:41:20 PDT

  Modified files:
    sys/sparc64/sparc64  exception.s genassym.c trap.c 
    sys/sparc64/include  intr_machdep.h 
  Log:
  Split the low level trap code into trap, interrupt and syscall, its
  easier and hopefully this code is done changing radically.
  
  Don't use the mmu tlb register to address the kernel page table, nor
  the 8k pointer register.  The hardware will do some of the page table
  lookup by storing the the base address in an internal register and
  calculating the address of the tte in the table.  However it is limited
  to a 1 meg tsb, which only maps 512 megs.  The kernel page table only
  has one level, so its easy to just do it by hand, which has the advantage
  of supporting abitrary amounts of kvm and only costs a few more instructions.
  
  Increase kvm to 1 gig now that its easy to do so and so we don't waste
  most of a 4 meg page.
  
  Fix some traces.  Fix more proc locking.
  
  Call tsb_stte_promote if we get a soft fault on a mapping in the upper
  levels of the tsb.  If there is an invalid or unreferenced mapping
  in the primary tsb, it will be replaced.
  
  Immediately fail for faults occuring in {f,s}uswintr.
  
  Revision  Changes    Path
  1.3       +2 -1      src/sys/sparc64/include/intr_machdep.h
  1.9       +302 -87   src/sys/sparc64/sparc64/exception.s
  1.10      +12 -12    src/sys/sparc64/sparc64/genassym.c
  1.13      +80 -55    src/sys/sparc64/sparc64/trap.c


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