iCache.hpp

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/* Copyright 1994, LongView Technologies L.L.C. $Revision: 1.3 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
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#ifdef DELTA_COMPILER

// Handle "self-modifying" code on processors with separate I-caches.
// To minimize the performance penalty of the flushes, the VM always
// does a sequence of selective flushes followed by a flushICache().
// If the CPU supports line-by-line flushes, implement flushICacheWord,
// otherwise flushICache.

#define HAVE_LINE_FLUSH         /* x86: don't need any flushing */


// For processors with a small I-cache / without selective cache invalidation,
// define flushICache to flush the entire I-cache.  Otherwise, make it a no-op.
# ifdef HAVE_LINE_FLUSH
  inline void flushICache() {}
# else
  void flushICache();
# endif

// For processors with selective cache invalidation, define the following two
// routines:
# ifdef HAVE_LINE_FLUSH
  void flushICacheWord(void* addr);             // flush one word (instruction)
  void flushICacheRange(void* start, void* end);// flush range [start, end)
# else
  inline void flushICacheWord(void* addr) { Unused(addr); }
  inline void flushICacheRange(void* start, void* end) {
    Unused(start); Unused(end); }
# endif

#endif

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