text: # Copyright (c) 2007-2008 The Hewlett-Packard Development Company
  # All rights reserved.
  #
  # The license below extends only to copyright in the software and shall
  # not be construed as granting a license to any other intellectual
  # property including but not limited to intellectual property relating
  # to a hardware implementation of the functionality of the software
  # licensed hereunder.  You may use the software subject to the license
  # terms below provided that you ensure that this notice is replicated
  # unmodified and in its entirety in all distributions of the software,
  # modified or unmodified, in source code or in binary form.
  #
  # Copyright (c) 2008 The Regents of The University of Michigan
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are
  # met: redistributions of source code must retain the above copyright
  # notice, this list of conditions and the following disclaimer;
  # redistributions in binary form must reproduce the above copyright
  # notice, this list of conditions and the following disclaimer in the
  # documentation and/or other materials provided with the distribution;
  # neither the name of the copyright holders nor the names of its
  # contributors may be used to endorse or promote products derived from
  # this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  microcode = '''
  def macroop RDMSR
  {
      ld t2, intseg, [8, rcx, t0], "IntAddrPrefixMSR << 3", \
          dataSize=8, addressSize=8
      mov rax, rax, t2, dataSize=4
      srli t2, t2, 32, dataSize=8
      mov rdx, rdx, t2, dataSize=4
  };
  
  def macroop WRMSR
  {
      .serialize_after
      mov t2, t2, rax, dataSize=4
      slli t3, rdx, 32, dataSize=8
      or t2, t2, t3, dataSize=8
      st t2, intseg, [8, rcx, t0], "IntAddrPrefixMSR << 3", \
          dataSize=8, addressSize=8
  };
  
  def macroop RDTSC
  {
      .serialize_before
      rdtsc t1
      mov rax, rax, t1, dataSize=4
      srli rdx, t1, 32, dataSize=8
  };
  
  def macroop RDTSCP
  {
      .serialize_before
      mfence
      rdtsc t1
      mov rax, rax, t1, dataSize=4
      srli rdx, t1, 32, dataSize=8
      rdval rcx, "InstRegIndex(MISCREG_TSC_AUX)", dataSize=4
  };
  '''
  