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// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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//
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// version 2 for more details (a copy is included in the LICENSE file that
// accompanied this code).
//
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// 2 along with this work; if not, write to the Free Software Foundation,
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//

// AMD64 Win32 Architecture Description File

//----------OS-DEPENDENT ENCODING BLOCK-----------------------------------------------------
// This block specifies the encoding classes used by the compiler to output
// byte streams.  Encoding classes generate functions which are called by
// Machine Instruction Nodes in order to generate the bit encoding of the
// instruction.  Operands specify their base encoding interface with the
// interface keyword.  There are currently supported four interfaces,
// REG_INTER, CONST_INTER, MEMORY_INTER, & COND_INTER.  REG_INTER causes an
// operand to generate a function which returns its register number when
// queried.   CONST_INTER causes an operand to generate a function which
// returns the value of the constant when queried.  MEMORY_INTER causes an
// operand to generate four functions which return the Base Register, the
// Index Register, the Scale Value, and the Offset Value of the operand when
// queried.  COND_INTER causes an operand to generate six functions which
// return the encoding code (ie - encoding bits for the instruction)
// associated with each basic boolean condition for a conditional instruction.
// Instructions specify two basic values for encoding.  They use the
// ins_encode keyword to specify their encoding class (which must be one of
// the class names specified in the encoding block), and they use the
// opcode keyword to specify, in order, their primary, secondary, and
// tertiary opcode.  Only the opcode sections which a particular instruction
// needs for encoding need to be specified.
encode %{
  // Build emit functions for each basic byte or larger field in the intel
  // encoding scheme (opcode, rm, sib, immediate), and call them from C++
  // code in the enc_class source block.  Emit functions will live in the
  // main source block for now.  In future, we can generalize this by
  // adding a syntax that specifies the sizes of fields in an order,
  // so that the adlc can build the emit functions automagically

%}


// Platform dependent source

source %{

%}
