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\ Hypervisor Software File: init-c9.fth
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\ ========== Copyright Header End ============================================
id: @(#)init-c9.fth 1.9 00/02/15
purpose: 
copyright: Copyright 1999 Sun Microsystems, Inc.  All Rights Reserved

headerless
0 value c-stack

\
\ If OBP takes an exception fairly early, the exception handler tries to
\ use this before we have allocated enough state to cope.
\
: init-c-stack  ( -- )
   c-stack 0= if  exit  then   
   lock[
      7 cleanwin!  0 otherwin!
      0 wstate!    0 canrestore!
      6 cansave!   0 cwp!
      c-stack %o6!
      0 %i6!   0 %i7!
      c-stack  /entry-frame negate  0  fill
   ]unlock
;

: create-c-stack  ( -- )
   \ Establish the C stack
   mmu-pagesize dup 0                           ( align size virt )
   [ also client-services ] claim [ previous ]  ( stack-bottom-adr )
   dup mmu-pagesize erase
   mmu-pagesize + d# 7 invert and
   /entry-frame +  V9_SP_BIAS -  to  c-stack
   init-c-stack
;

stand-init: Creating C stack
   create-c-stack
;
headers