/* Definitions for expressions stored in reversed prefix form, for GDB.
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/* Definitions for expressions stored in reversed prefix form, for GDB.
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Copyright (C) 1986, 1989, 1992, 1994, 2000, 2003, 2005, 2007, 2008
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Copyright (C) 1986, 1989, 1992, 1994, 2000, 2003, 2005, 2007, 2008
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#if !defined (EXPRESSION_H)
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#if !defined (EXPRESSION_H)
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#define EXPRESSION_H 1
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#define EXPRESSION_H 1
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#include "symtab.h" /* Needed for "struct block" type. */
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#include "symtab.h" /* Needed for "struct block" type. */
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#include "doublest.h" /* Needed for DOUBLEST. */
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#include "doublest.h" /* Needed for DOUBLEST. */
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/* Definitions for saved C expressions. */
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/* Definitions for saved C expressions. */
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/* An expression is represented as a vector of union exp_element's.
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/* An expression is represented as a vector of union exp_element's.
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Each exp_element is an opcode, except that some opcodes cause
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Each exp_element is an opcode, except that some opcodes cause
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the following exp_element to be treated as a long or double constant
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the following exp_element to be treated as a long or double constant
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or as a variable. The opcodes are obeyed, using a stack for temporaries.
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or as a variable. The opcodes are obeyed, using a stack for temporaries.
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The value is left on the temporary stack at the end. */
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The value is left on the temporary stack at the end. */
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/* When it is necessary to include a string,
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/* When it is necessary to include a string,
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it can occupy as many exp_elements as it needs.
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it can occupy as many exp_elements as it needs.
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We find the length of the string using strlen,
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We find the length of the string using strlen,
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divide to find out how many exp_elements are used up,
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divide to find out how many exp_elements are used up,
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and skip that many. Strings, like numbers, are indicated
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and skip that many. Strings, like numbers, are indicated
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by the preceding opcode. */
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by the preceding opcode. */
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enum exp_opcode
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enum exp_opcode
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{
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{
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/* Used when it's necessary to pass an opcode which will be ignored,
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/* Used when it's necessary to pass an opcode which will be ignored,
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or to catch uninitialized values. */
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or to catch uninitialized values. */
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OP_NULL,
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OP_NULL,
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/* BINOP_... operate on two values computed by following subexpressions,
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/* BINOP_... operate on two values computed by following subexpressions,
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replacing them by one result value. They take no immediate arguments. */
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replacing them by one result value. They take no immediate arguments. */
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BINOP_ADD, /* + */
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BINOP_ADD, /* + */
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BINOP_SUB, /* - */
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BINOP_SUB, /* - */
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BINOP_MUL, /* * */
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BINOP_MUL, /* * */
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BINOP_DIV, /* / */
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BINOP_DIV, /* / */
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BINOP_REM, /* % */
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BINOP_REM, /* % */
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BINOP_MOD, /* mod (Knuth 1.2.4) */
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BINOP_MOD, /* mod (Knuth 1.2.4) */
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BINOP_LSH, /* << */
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BINOP_LSH, /* << */
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BINOP_RSH, /* >> */
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BINOP_RSH, /* >> */
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BINOP_LOGICAL_AND, /* && */
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BINOP_LOGICAL_AND, /* && */
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BINOP_LOGICAL_OR, /* || */
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BINOP_LOGICAL_OR, /* || */
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BINOP_BITWISE_AND, /* & */
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BINOP_BITWISE_AND, /* & */
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BINOP_BITWISE_IOR, /* | */
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BINOP_BITWISE_IOR, /* | */
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BINOP_BITWISE_XOR, /* ^ */
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BINOP_BITWISE_XOR, /* ^ */
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BINOP_EQUAL, /* == */
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BINOP_EQUAL, /* == */
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BINOP_NOTEQUAL, /* != */
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BINOP_NOTEQUAL, /* != */
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BINOP_LESS, /* < */
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BINOP_LESS, /* < */
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BINOP_GTR, /* > */
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BINOP_GTR, /* > */
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BINOP_LEQ, /* <= */
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BINOP_LEQ, /* <= */
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BINOP_GEQ, /* >= */
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BINOP_GEQ, /* >= */
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BINOP_REPEAT, /* @ */
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BINOP_REPEAT, /* @ */
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BINOP_ASSIGN, /* = */
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BINOP_ASSIGN, /* = */
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BINOP_COMMA, /* , */
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BINOP_COMMA, /* , */
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BINOP_SUBSCRIPT, /* x[y] */
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BINOP_SUBSCRIPT, /* x[y] */
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BINOP_EXP, /* Exponentiation */
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BINOP_EXP, /* Exponentiation */
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/* C++. */
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/* C++. */
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BINOP_MIN, /* <? */
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BINOP_MIN, /* <? */
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BINOP_MAX, /* >? */
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BINOP_MAX, /* >? */
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/* STRUCTOP_MEMBER is used for pointer-to-member constructs.
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/* STRUCTOP_MEMBER is used for pointer-to-member constructs.
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X . * Y translates into X STRUCTOP_MEMBER Y. */
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X . * Y translates into X STRUCTOP_MEMBER Y. */
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STRUCTOP_MEMBER,
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STRUCTOP_MEMBER,
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/* STRUCTOP_MPTR is used for pointer-to-member constructs
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/* STRUCTOP_MPTR is used for pointer-to-member constructs
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when X is a pointer instead of an aggregate. */
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when X is a pointer instead of an aggregate. */
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STRUCTOP_MPTR,
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STRUCTOP_MPTR,
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/* end of C++. */
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/* end of C++. */
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/* For Modula-2 integer division DIV */
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/* For Modula-2 integer division DIV */
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BINOP_INTDIV,
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BINOP_INTDIV,
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BINOP_ASSIGN_MODIFY, /* +=, -=, *=, and so on.
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BINOP_ASSIGN_MODIFY, /* +=, -=, *=, and so on.
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The following exp_element is another opcode,
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The following exp_element is another opcode,
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a BINOP_, saying how to modify.
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a BINOP_, saying how to modify.
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Then comes another BINOP_ASSIGN_MODIFY,
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Then comes another BINOP_ASSIGN_MODIFY,
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making three exp_elements in total. */
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making three exp_elements in total. */
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/* Modula-2 standard (binary) procedures */
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/* Modula-2 standard (binary) procedures */
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BINOP_VAL,
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BINOP_VAL,
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BINOP_INCL,
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BINOP_INCL,
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BINOP_EXCL,
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BINOP_EXCL,
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/* Concatenate two operands, such as character strings or bitstrings.
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/* Concatenate two operands, such as character strings or bitstrings.
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If the first operand is a integer expression, then it means concatenate
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If the first operand is a integer expression, then it means concatenate
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the second operand with itself that many times. */
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the second operand with itself that many times. */
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BINOP_CONCAT,
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BINOP_CONCAT,
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/* For (the deleted) Chill and Pascal. */
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/* For (the deleted) Chill and Pascal. */
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BINOP_IN, /* Returns 1 iff ARG1 IN ARG2. */
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BINOP_IN, /* Returns 1 iff ARG1 IN ARG2. */
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/* This is the "colon operator" used various places in (the
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/* This is the "colon operator" used various places in (the
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deleted) Chill. */
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deleted) Chill. */
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BINOP_RANGE,
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BINOP_RANGE,
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/* This must be the highest BINOP_ value, for expprint.c. */
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/* This must be the highest BINOP_ value, for expprint.c. */
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BINOP_END,
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BINOP_END,
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/* Operates on three values computed by following subexpressions. */
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/* Operates on three values computed by following subexpressions. */
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TERNOP_COND, /* ?: */
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TERNOP_COND, /* ?: */
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/* A sub-string/sub-array. (the deleted) Chill syntax:
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/* A sub-string/sub-array. (the deleted) Chill syntax:
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OP1(OP2:OP3). Return elements OP2 through OP3 of OP1. */
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OP1(OP2:OP3). Return elements OP2 through OP3 of OP1. */
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TERNOP_SLICE,
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TERNOP_SLICE,
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/* A sub-string/sub-array. (The deleted) Chill syntax: OP1(OP2 UP
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/* A sub-string/sub-array. (The deleted) Chill syntax: OP1(OP2 UP
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OP3). Return OP3 elements of OP1, starting with element
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OP3). Return OP3 elements of OP1, starting with element
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OP2. */
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OP2. */
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TERNOP_SLICE_COUNT,
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TERNOP_SLICE_COUNT,
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/* Multidimensional subscript operator, such as Modula-2 x[a,b,...].
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/* Multidimensional subscript operator, such as Modula-2 x[a,b,...].
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The dimensionality is encoded in the operator, like the number of
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The dimensionality is encoded in the operator, like the number of
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function arguments in OP_FUNCALL, I.E. <OP><dimension><OP>.
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function arguments in OP_FUNCALL, I.E. <OP><dimension><OP>.
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The value of the first following subexpression is subscripted
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The value of the first following subexpression is subscripted
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by each of the next following subexpressions, one per dimension. */
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by each of the next following subexpressions, one per dimension. */
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MULTI_SUBSCRIPT,
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MULTI_SUBSCRIPT,
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/* The OP_... series take immediate following arguments.
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/* The OP_... series take immediate following arguments.
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After the arguments come another OP_... (the same one)
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After the arguments come another OP_... (the same one)
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so that the grouping can be recognized from the end. */
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so that the grouping can be recognized from the end. */
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/* OP_LONG is followed by a type pointer in the next exp_element
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/* OP_LONG is followed by a type pointer in the next exp_element
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and the long constant value in the following exp_element.
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and the long constant value in the following exp_element.
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Then comes another OP_LONG.
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Then comes another OP_LONG.
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Thus, the operation occupies four exp_elements. */
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Thus, the operation occupies four exp_elements. */
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OP_LONG,
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OP_LONG,
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/* OP_DOUBLE is similar but takes a DOUBLEST constant instead of a long. */
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/* OP_DOUBLE is similar but takes a DOUBLEST constant instead of a long. */
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OP_DOUBLE,
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OP_DOUBLE,
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/* OP_VAR_VALUE takes one struct block * in the following element,
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/* OP_VAR_VALUE takes one struct block * in the following element,
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and one struct symbol * in the following exp_element, followed by
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and one struct symbol * in the following exp_element, followed by
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another OP_VAR_VALUE, making four exp_elements. If the block is
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another OP_VAR_VALUE, making four exp_elements. If the block is
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non-NULL, evaluate the symbol relative to the innermost frame
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non-NULL, evaluate the symbol relative to the innermost frame
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executing in that block; if the block is NULL use the selected frame. */
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executing in that block; if the block is NULL use the selected frame. */
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OP_VAR_VALUE,
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OP_VAR_VALUE,
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/* OP_LAST is followed by an integer in the next exp_element.
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/* OP_LAST is followed by an integer in the next exp_element.
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The integer is zero for the last value printed,
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The integer is zero for the last value printed,
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or it is the absolute number of a history element.
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or it is the absolute number of a history element.
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With another OP_LAST at the end, this makes three exp_elements. */
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With another OP_LAST at the end, this makes three exp_elements. */
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OP_LAST,
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OP_LAST,
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/* OP_REGISTER is followed by a string in the next exp_element.
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/* OP_REGISTER is followed by a string in the next exp_element.
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This is the name of a register to fetch. */
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This is the name of a register to fetch. */
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OP_REGISTER,
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OP_REGISTER,
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/* OP_INTERNALVAR is followed by an internalvar ptr in the next exp_element.
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/* OP_INTERNALVAR is followed by an internalvar ptr in the next exp_element.
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With another OP_INTERNALVAR at the end, this makes three exp_elements. */
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With another OP_INTERNALVAR at the end, this makes three exp_elements. */
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OP_INTERNALVAR,
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OP_INTERNALVAR,
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/* OP_FUNCALL is followed by an integer in the next exp_element.
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/* OP_FUNCALL is followed by an integer in the next exp_element.
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The integer is the number of args to the function call.
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The integer is the number of args to the function call.
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That many plus one values from following subexpressions
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That many plus one values from following subexpressions
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are used, the first one being the function.
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are used, the first one being the function.
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The integer is followed by a repeat of OP_FUNCALL,
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The integer is followed by a repeat of OP_FUNCALL,
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making three exp_elements. */
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making three exp_elements. */
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OP_FUNCALL,
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OP_FUNCALL,
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/* OP_OBJC_MSGCALL is followed by a string in the next exp_element and then an
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/* OP_OBJC_MSGCALL is followed by a string in the next exp_element and then an
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integer. The string is the selector string. The integer is the number
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integer. The string is the selector string. The integer is the number
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of arguments to the message call. That many plus one values are used,
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of arguments to the message call. That many plus one values are used,
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the first one being the object pointer. This is an Objective C message */
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the first one being the object pointer. This is an Objective C message */
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OP_OBJC_MSGCALL,
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OP_OBJC_MSGCALL,
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/* This is EXACTLY like OP_FUNCALL but is semantically different.
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/* This is EXACTLY like OP_FUNCALL but is semantically different.
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In F77, array subscript expressions, substring expressions
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In F77, array subscript expressions, substring expressions
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and function calls are all exactly the same syntactically. They may
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and function calls are all exactly the same syntactically. They may
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only be disambiguated at runtime. Thus this operator, which
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only be disambiguated at runtime. Thus this operator, which
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indicates that we have found something of the form <name> ( <stuff> ) */
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indicates that we have found something of the form <name> ( <stuff> ) */
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OP_F77_UNDETERMINED_ARGLIST,
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OP_F77_UNDETERMINED_ARGLIST,
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/* The following OP is a special one, it introduces a F77 complex
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/* The following OP is a special one, it introduces a F77 complex
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literal. It is followed by exactly two args that are doubles. */
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literal. It is followed by exactly two args that are doubles. */
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OP_COMPLEX,
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OP_COMPLEX,
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/* OP_STRING represents a string constant.
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/* OP_STRING represents a string constant.
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Its format is the same as that of a STRUCTOP, but the string
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Its format is the same as that of a STRUCTOP, but the string
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data is just made into a string constant when the operation
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data is just made into a string constant when the operation
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is executed. */
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is executed. */
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OP_STRING,
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OP_STRING,
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/* OP_BITSTRING represents a packed bitstring constant.
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/* OP_BITSTRING represents a packed bitstring constant.
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Its format is the same as that of a STRUCTOP, but the bitstring
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Its format is the same as that of a STRUCTOP, but the bitstring
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data is just made into a bitstring constant when the operation
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data is just made into a bitstring constant when the operation
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is executed. */
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is executed. */
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OP_BITSTRING,
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OP_BITSTRING,
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/* OP_ARRAY creates an array constant out of the following subexpressions.
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/* OP_ARRAY creates an array constant out of the following subexpressions.
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It is followed by two exp_elements, the first containing an integer
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It is followed by two exp_elements, the first containing an integer
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that is the lower bound of the array and the second containing another
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that is the lower bound of the array and the second containing another
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integer that is the upper bound of the array. The second integer is
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integer that is the upper bound of the array. The second integer is
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followed by a repeat of OP_ARRAY, making four exp_elements total.
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followed by a repeat of OP_ARRAY, making four exp_elements total.
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The bounds are used to compute the number of following subexpressions
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The bounds are used to compute the number of following subexpressions
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to consume, as well as setting the bounds in the created array constant.
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to consume, as well as setting the bounds in the created array constant.
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The type of the elements is taken from the type of the first subexp,
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The type of the elements is taken from the type of the first subexp,
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and they must all match. */
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and they must all match. */
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OP_ARRAY,
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OP_ARRAY,
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/* UNOP_CAST is followed by a type pointer in the next exp_element.
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/* UNOP_CAST is followed by a type pointer in the next exp_element.
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With another UNOP_CAST at the end, this makes three exp_elements.
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With another UNOP_CAST at the end, this makes three exp_elements.
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It casts the value of the following subexpression. */
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It casts the value of the following subexpression. */
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UNOP_CAST,
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UNOP_CAST,
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/* UNOP_MEMVAL is followed by a type pointer in the next exp_element
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/* UNOP_MEMVAL is followed by a type pointer in the next exp_element
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With another UNOP_MEMVAL at the end, this makes three exp_elements.
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With another UNOP_MEMVAL at the end, this makes three exp_elements.
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It casts the contents of the word addressed by the value of the
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It casts the contents of the word addressed by the value of the
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following subexpression. */
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following subexpression. */
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UNOP_MEMVAL,
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UNOP_MEMVAL,
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/* UNOP_MEMVAL_TLS is followed by a `struct objfile' pointer in the next
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/* UNOP_MEMVAL_TLS is followed by a `struct objfile' pointer in the next
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exp_element and a type pointer in the following exp_element.
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exp_element and a type pointer in the following exp_element.
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With another UNOP_MEMVAL_TLS at the end, this makes four exp_elements.
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With another UNOP_MEMVAL_TLS at the end, this makes four exp_elements.
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It casts the contents of the word offsetted by the value of the
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It casts the contents of the word offsetted by the value of the
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following subexpression from the TLS specified by `struct objfile'. */
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following subexpression from the TLS specified by `struct objfile'. */
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UNOP_MEMVAL_TLS,
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UNOP_MEMVAL_TLS,
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/* UNOP_... operate on one value from a following subexpression
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/* UNOP_... operate on one value from a following subexpression
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and replace it with a result. They take no immediate arguments. */
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and replace it with a result. They take no immediate arguments. */
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UNOP_NEG, /* Unary - */
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UNOP_NEG, /* Unary - */
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UNOP_LOGICAL_NOT, /* Unary ! */
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UNOP_LOGICAL_NOT, /* Unary ! */
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UNOP_COMPLEMENT, /* Unary ~ */
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UNOP_COMPLEMENT, /* Unary ~ */
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UNOP_IND, /* Unary * */
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UNOP_IND, /* Unary * */
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UNOP_ADDR, /* Unary & */
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UNOP_ADDR, /* Unary & */
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UNOP_PREINCREMENT, /* ++ before an expression */
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UNOP_PREINCREMENT, /* ++ before an expression */
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UNOP_POSTINCREMENT, /* ++ after an expression */
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UNOP_POSTINCREMENT, /* ++ after an expression */
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UNOP_PREDECREMENT, /* -- before an expression */
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UNOP_PREDECREMENT, /* -- before an expression */
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UNOP_POSTDECREMENT, /* -- after an expression */
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UNOP_POSTDECREMENT, /* -- after an expression */
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UNOP_SIZEOF, /* Unary sizeof (followed by expression) */
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UNOP_SIZEOF, /* Unary sizeof (followed by expression) */
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UNOP_PLUS, /* Unary plus */
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UNOP_PLUS, /* Unary plus */
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UNOP_CAP, /* Modula-2 standard (unary) procedures */
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UNOP_CAP, /* Modula-2 standard (unary) procedures */
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UNOP_CHR,
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UNOP_CHR,
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UNOP_ORD,
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UNOP_ORD,
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UNOP_ABS,
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UNOP_ABS,
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UNOP_FLOAT,
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UNOP_FLOAT,
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UNOP_HIGH,
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UNOP_HIGH,
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UNOP_MAX,
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UNOP_MAX,
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UNOP_MIN,
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UNOP_MIN,
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UNOP_ODD,
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UNOP_ODD,
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UNOP_TRUNC,
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UNOP_TRUNC,
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/* (The deleted) Chill builtin functions. */
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/* (The deleted) Chill builtin functions. */
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UNOP_LOWER, UNOP_UPPER, UNOP_LENGTH, UNOP_CARD, UNOP_CHMAX, UNOP_CHMIN,
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UNOP_LOWER, UNOP_UPPER, UNOP_LENGTH, UNOP_CARD, UNOP_CHMAX, UNOP_CHMIN,
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OP_BOOL, /* Modula-2 builtin BOOLEAN type */
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OP_BOOL, /* Modula-2 builtin BOOLEAN type */
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OP_M2_STRING, /* Modula-2 string constants */
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OP_M2_STRING, /* Modula-2 string constants */
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/* STRUCTOP_... operate on a value from a following subexpression
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/* STRUCTOP_... operate on a value from a following subexpression
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by extracting a structure component specified by a string
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by extracting a structure component specified by a string
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that appears in the following exp_elements (as many as needed).
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that appears in the following exp_elements (as many as needed).
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STRUCTOP_STRUCT is used for "." and STRUCTOP_PTR for "->".
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STRUCTOP_STRUCT is used for "." and STRUCTOP_PTR for "->".
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They differ only in the error message given in case the value is
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They differ only in the error message given in case the value is
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not suitable or the structure component specified is not found.
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not suitable or the structure component specified is not found.
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The length of the string follows the opcode, followed by
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The length of the string follows the opcode, followed by
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BYTES_TO_EXP_ELEM(length) elements containing the data of the
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BYTES_TO_EXP_ELEM(length) elements containing the data of the
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string, followed by the length again and the opcode again. */
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string, followed by the length again and the opcode again. */
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STRUCTOP_STRUCT,
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STRUCTOP_STRUCT,
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STRUCTOP_PTR,
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STRUCTOP_PTR,
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/* C++: OP_THIS is just a placeholder for the class instance variable.
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/* C++: OP_THIS is just a placeholder for the class instance variable.
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It just comes in a tight (OP_THIS, OP_THIS) pair. */
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It just comes in a tight (OP_THIS, OP_THIS) pair. */
|
OP_THIS,
|
OP_THIS,
|
|
|
/* Objective-C: OP_OBJC_SELF is just a placeholder for the class instance
|
/* Objective-C: OP_OBJC_SELF is just a placeholder for the class instance
|
variable. It just comes in a tight (OP_OBJC_SELF, OP_OBJC_SELF) pair. */
|
variable. It just comes in a tight (OP_OBJC_SELF, OP_OBJC_SELF) pair. */
|
OP_OBJC_SELF,
|
OP_OBJC_SELF,
|
|
|
/* Objective C: "@selector" pseudo-operator */
|
/* Objective C: "@selector" pseudo-operator */
|
OP_OBJC_SELECTOR,
|
OP_OBJC_SELECTOR,
|
|
|
/* OP_SCOPE surrounds a type name and a field name. The type
|
/* OP_SCOPE surrounds a type name and a field name. The type
|
name is encoded as one element, but the field name stays as
|
name is encoded as one element, but the field name stays as
|
a string, which, of course, is variable length. */
|
a string, which, of course, is variable length. */
|
OP_SCOPE,
|
OP_SCOPE,
|
|
|
/* Used to represent named structure field values in brace
|
/* Used to represent named structure field values in brace
|
initializers (or tuples as they are called in (the deleted)
|
initializers (or tuples as they are called in (the deleted)
|
Chill).
|
Chill).
|
|
|
The gcc C syntax is NAME:VALUE or .NAME=VALUE, the (the
|
The gcc C syntax is NAME:VALUE or .NAME=VALUE, the (the
|
deleted) Chill syntax is .NAME:VALUE. Multiple labels (as in
|
deleted) Chill syntax is .NAME:VALUE. Multiple labels (as in
|
the (the deleted) Chill syntax .NAME1,.NAME2:VALUE) is
|
the (the deleted) Chill syntax .NAME1,.NAME2:VALUE) is
|
represented as if it were .NAME1:(.NAME2:VALUE) (though that is
|
represented as if it were .NAME1:(.NAME2:VALUE) (though that is
|
not valid (the deleted) Chill syntax).
|
not valid (the deleted) Chill syntax).
|
|
|
The NAME is represented as for STRUCTOP_STRUCT; VALUE follows. */
|
The NAME is represented as for STRUCTOP_STRUCT; VALUE follows. */
|
OP_LABELED,
|
OP_LABELED,
|
|
|
/* OP_TYPE is for parsing types, and used with the "ptype" command
|
/* OP_TYPE is for parsing types, and used with the "ptype" command
|
so we can look up types that are qualified by scope, either with
|
so we can look up types that are qualified by scope, either with
|
the GDB "::" operator, or the Modula-2 '.' operator. */
|
the GDB "::" operator, or the Modula-2 '.' operator. */
|
OP_TYPE,
|
OP_TYPE,
|
|
|
/* An un-looked-up identifier. */
|
/* An un-looked-up identifier. */
|
OP_NAME,
|
OP_NAME,
|
|
|
/* An Objective C Foundation Class NSString constant */
|
/* An Objective C Foundation Class NSString constant */
|
OP_OBJC_NSSTRING,
|
OP_OBJC_NSSTRING,
|
|
|
/* A F90 array range operator (for "exp:exp", "exp:", ":exp" and ":"). */
|
/* A F90 array range operator (for "exp:exp", "exp:", ":exp" and ":"). */
|
OP_F90_RANGE,
|
OP_F90_RANGE,
|
|
|
/* OP_DECFLOAT is followed by a type pointer in the next exp_element
|
/* OP_DECFLOAT is followed by a type pointer in the next exp_element
|
and a dec long constant value in the following exp_element.
|
and a dec long constant value in the following exp_element.
|
Then comes another OP_DECFLOAT. */
|
Then comes another OP_DECFLOAT. */
|
OP_DECFLOAT,
|
OP_DECFLOAT,
|
|
|
/* First extension operator. Individual language modules define
|
/* First extension operator. Individual language modules define
|
extra operators they need as constants with values
|
extra operators they need as constants with values
|
OP_LANGUAGE_SPECIFIC0 + k, for k >= 0, using a separate
|
OP_LANGUAGE_SPECIFIC0 + k, for k >= 0, using a separate
|
enumerated type definition:
|
enumerated type definition:
|
enum foo_extension_operator {
|
enum foo_extension_operator {
|
BINOP_MOGRIFY = OP_EXTENDED0,
|
BINOP_MOGRIFY = OP_EXTENDED0,
|
BINOP_FROB,
|
BINOP_FROB,
|
...
|
...
|
}; */
|
}; */
|
OP_EXTENDED0,
|
OP_EXTENDED0,
|
|
|
/* Last possible extension operator. Defined to provide an
|
/* Last possible extension operator. Defined to provide an
|
explicit and finite number of extended operators. */
|
explicit and finite number of extended operators. */
|
OP_EXTENDED_LAST = 0xff
|
OP_EXTENDED_LAST = 0xff
|
/* NOTE: Eventually, we expect to convert to an object-oriented
|
/* NOTE: Eventually, we expect to convert to an object-oriented
|
formulation for expression operators that does away with the
|
formulation for expression operators that does away with the
|
need for these extension operators, and indeed for this
|
need for these extension operators, and indeed for this
|
entire enumeration type. Therefore, consider the OP_EXTENDED
|
entire enumeration type. Therefore, consider the OP_EXTENDED
|
definitions to be a temporary measure. */
|
definitions to be a temporary measure. */
|
};
|
};
|
|
|
union exp_element
|
union exp_element
|
{
|
{
|
enum exp_opcode opcode;
|
enum exp_opcode opcode;
|
struct symbol *symbol;
|
struct symbol *symbol;
|
LONGEST longconst;
|
LONGEST longconst;
|
DOUBLEST doubleconst;
|
DOUBLEST doubleconst;
|
gdb_byte decfloatconst[16];
|
gdb_byte decfloatconst[16];
|
/* Really sizeof (union exp_element) characters (or less for the last
|
/* Really sizeof (union exp_element) characters (or less for the last
|
element of a string). */
|
element of a string). */
|
char string;
|
char string;
|
struct type *type;
|
struct type *type;
|
struct internalvar *internalvar;
|
struct internalvar *internalvar;
|
struct block *block;
|
struct block *block;
|
struct objfile *objfile;
|
struct objfile *objfile;
|
};
|
};
|
|
|
struct expression
|
struct expression
|
{
|
{
|
const struct language_defn *language_defn; /* language it was entered in */
|
const struct language_defn *language_defn; /* language it was entered in */
|
int nelts;
|
int nelts;
|
union exp_element elts[1];
|
union exp_element elts[1];
|
};
|
};
|
|
|
/* Macros for converting between number of expression elements and bytes
|
/* Macros for converting between number of expression elements and bytes
|
to store that many expression elements. */
|
to store that many expression elements. */
|
|
|
#define EXP_ELEM_TO_BYTES(elements) \
|
#define EXP_ELEM_TO_BYTES(elements) \
|
((elements) * sizeof (union exp_element))
|
((elements) * sizeof (union exp_element))
|
#define BYTES_TO_EXP_ELEM(bytes) \
|
#define BYTES_TO_EXP_ELEM(bytes) \
|
(((bytes) + sizeof (union exp_element) - 1) / sizeof (union exp_element))
|
(((bytes) + sizeof (union exp_element) - 1) / sizeof (union exp_element))
|
|
|
/* From parse.c */
|
/* From parse.c */
|
|
|
extern struct expression *parse_expression (char *);
|
extern struct expression *parse_expression (char *);
|
|
|
extern struct expression *parse_exp_1 (char **, struct block *, int);
|
extern struct expression *parse_exp_1 (char **, struct block *, int);
|
|
|
/* The innermost context required by the stack and register variables
|
/* The innermost context required by the stack and register variables
|
we've encountered so far. To use this, set it to NULL, then call
|
we've encountered so far. To use this, set it to NULL, then call
|
parse_<whatever>, then look at it. */
|
parse_<whatever>, then look at it. */
|
extern struct block *innermost_block;
|
extern struct block *innermost_block;
|
|
|
/* From eval.c */
|
/* From eval.c */
|
|
|
/* Values of NOSIDE argument to eval_subexp. */
|
/* Values of NOSIDE argument to eval_subexp. */
|
|
|
enum noside
|
enum noside
|
{
|
{
|
EVAL_NORMAL,
|
EVAL_NORMAL,
|
EVAL_SKIP, /* Only effect is to increment pos. */
|
EVAL_SKIP, /* Only effect is to increment pos. */
|
EVAL_AVOID_SIDE_EFFECTS /* Don't modify any variables or
|
EVAL_AVOID_SIDE_EFFECTS /* Don't modify any variables or
|
call any functions. The value
|
call any functions. The value
|
returned will have the correct
|
returned will have the correct
|
type, and will have an
|
type, and will have an
|
approximately correct lvalue
|
approximately correct lvalue
|
type (inaccuracy: anything that is
|
type (inaccuracy: anything that is
|
listed as being in a register in
|
listed as being in a register in
|
the function in which it was
|
the function in which it was
|
declared will be lval_register). */
|
declared will be lval_register). */
|
};
|
};
|
|
|
extern struct value *evaluate_subexp_standard
|
extern struct value *evaluate_subexp_standard
|
(struct type *, struct expression *, int *, enum noside);
|
(struct type *, struct expression *, int *, enum noside);
|
|
|
/* From expprint.c */
|
/* From expprint.c */
|
|
|
extern void print_expression (struct expression *, struct ui_file *);
|
extern void print_expression (struct expression *, struct ui_file *);
|
|
|
extern char *op_string (enum exp_opcode);
|
extern char *op_string (enum exp_opcode);
|
|
|
extern void dump_raw_expression (struct expression *, struct ui_file *, char *);
|
extern void dump_raw_expression (struct expression *, struct ui_file *, char *);
|
extern void dump_prefix_expression (struct expression *, struct ui_file *);
|
extern void dump_prefix_expression (struct expression *, struct ui_file *);
|
|
|
#endif /* !defined (EXPRESSION_H) */
|
#endif /* !defined (EXPRESSION_H) */
|
|
|
