cvs commit: src/sys/alpha/alpha machdep.c src/sys/i386/i386 support.s src/sys/ia64/ia64 machdep.c src/sys/pc98/i386 machdep.c src/sys/powerpc/powerpc machdep.c src/sys/sparc64/sparc64 machdep.c src/sys/sys systm.h

[Jeff Roberson]

jeff        2003/03/31 16:18:56 PST

  FreeBSD src repository

  Modified files:
    sys/alpha/alpha      machdep.c 
    sys/i386/i386        support.s 
    sys/ia64/ia64        machdep.c 
    sys/pc98/i386        machdep.c 
    sys/powerpc/powerpc  machdep.c 
    sys/sparc64/sparc64  machdep.c 
    sys/sys              systm.h 
  Log:
   - Define a new md function 'casuptr'.  This atomically compares and sets
     a pointer that is in user space.  It will be used as the basic primitive
     for a kernel supported user space lock implementation.
   - Implement this function in x86's support.s
   - Provide stubs that return -1 in all other architectures.  Implementations
     will follow along shortly.
  
  Reviewed by:    jake
  
  Revision  Changes    Path
  1.199     +6 -0      src/sys/alpha/alpha/machdep.c
  1.94      +31 -0     src/sys/i386/i386/support.s
  1.128     +7 -0      src/sys/ia64/ia64/machdep.c
  1.312     +8 -0      src/sys/pc98/i386/machdep.c
  1.51      +8 -0      src/sys/powerpc/powerpc/machdep.c
  1.78      +7 -0      src/sys/sparc64/sparc64/machdep.c
  1.192     +1 -0      src/sys/sys/systm.h