Subversion Repositories openrisc_2011-10-31

/* Ada language operator definitions for GDB, the GNU debugger.

   Copyright (C) 1992, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   2007, 2008, 2009, 2010 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

    /* X IN A'RANGE(N).  N is an immediate operand, surrounded by 
       BINOP_IN_BOUNDS before and after.  A is an array, X an index 
       value.  Evaluates to true iff X is within range of the Nth
       dimension (1-based) of A.  (A multi-dimensional array
       type is represented as array of array of ...) */
    BINOP_IN_BOUNDS = OP_EXTENDED0,

    /* X IN L .. U.  True iff L <= X <= U.  */
    TERNOP_IN_RANGE,

    /* Ada attributes ('Foo). */
    OP_ATR_FIRST,
    OP_ATR_LAST,
    OP_ATR_LENGTH,
    OP_ATR_IMAGE,
    OP_ATR_MAX,
    OP_ATR_MIN,
    OP_ATR_MODULUS,
    OP_ATR_POS,
    OP_ATR_SIZE,
    OP_ATR_TAG,
    OP_ATR_VAL,

    /* Ada type qualification.  It is encoded as for UNOP_CAST, above, 
       and denotes the TYPE'(EXPR) construct. */
    UNOP_QUAL,

    /* X IN TYPE.  The `TYPE' argument is immediate, with 
       UNOP_IN_RANGE before and after it. True iff X is a member of 
       type TYPE (typically a subrange). */
    UNOP_IN_RANGE,

    /* An aggregate.   A single immediate operand, N>0, gives
       the number of component specifications that follow.  The
       immediate operand is followed by a second OP_AGGREGATE.  
       Next come N component specifications.  A component
       specification is either an OP_OTHERS (others=>...), an
       OP_CHOICES (for named associations), or other expression (for
       positional aggregates only).  Aggregates currently
       occur only as the right sides of assignments. */
    OP_AGGREGATE,

    /* An others clause.  Followed by a single expression. */
    OP_OTHERS,

    /* An aggregate component association.  A single immediate operand, N, 
       gives the number of choices that follow.  This is followed by a second
       OP_CHOICES operator.  Next come N operands, each of which is an
       expression, an OP_DISCRETE_RANGE, or an OP_NAME---the latter 
       for a simple name that must be a record component name and does 
       not correspond to a single existing symbol.  After the N choice 
       indicators comes an expression giving the value.

       In an aggregate such as (X => E1, ...), where X is a simple
       name, X could syntactically be either a component_selector_name 
       or an expression used as a discrete_choice, depending on the
       aggregate's type context.  Since this is not known at parsing
       time, we don't attempt to disambiguate X if it has multiple
       definitions, but instead supply an OP_NAME.  If X has a single
       definition, we represent it with an OP_VAR_VALUE, even though
       it may turn out to be within a record aggregate.  Aggregate 
       evaluation can use either OP_NAMEs or OP_VAR_VALUEs to get a
       record field name, and can evaluate OP_VAR_VALUE normally to
       get its value as an expression.  Unfortunately, we lose out in
       cases where X has multiple meanings and is part of an array
       aggregate.  I hope these are not common enough to annoy users,
       who can work around the problem in any case by putting
       parentheses around X. */
    OP_CHOICES,

    /* A positional aggregate component association.  The operator is 
       followed by a single integer indicating the position in the 
       aggregate (0-based), followed by a second OP_POSITIONAL.  Next 
       follows a single expression giving the component value.  */
    OP_POSITIONAL,

    /* A range of values.  Followed by two expressions giving the
       upper and lower bounds of the range. */
    OP_DISCRETE_RANGE,

    /* End marker */
    OP_ADA_LAST,