mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-05 02:47:05 +00:00
db034ac512
* NEWS: Menion that CHILL has been made obsolete. * gdbtypes.c (chill_varying_type): Make chill references obsolete. * gdbserver/Makefile.in: Ditto. * stabsread.c (read_range_type): Ditto. * gdbtypes.h: Ditto. * language.c (binop_type_check): Ditto. (binop_result_type): Ditto. (integral_type): Ditto. (character_type): Ditto. (string_type): Ditto. (boolean_type): Ditto. (structured_type): Ditto. (lang_bool_type): Ditto. (binop_type_check): Ditto. * language.h (_LANG_chill): Ditto. * dwarfread.c (set_cu_language): Ditto. * dwarfread.c (CHILL_PRODUCER): Ditto. * dwarfread.c (handle_producer): Ditto. * expression.h (enum exp_opcode): Ditto. * eval.c: Ditto for comments. * typeprint.c (typedef_print) [_LANG_chill]: Ditto. * expprint.c (print_subexp): Ditto. (print_subexp): Ditto. * valops.c (value_cast): Ditto. (search_struct_field): Ditto. * value.h (COERCE_VARYING_ARRAY): Ditto. * symfile.c (init_filename_language_table): Ditto. (add_psymbol_with_dem_name_to_list): Ditto. * valarith.c (value_binop): Ditto. (value_neg): Ditto. * valops.c (value_slice): Ditto. * symtab.h (union language_specific): Ditto. (SYMBOL_INIT_LANGUAGE_SPECIFIC): Ditto. (SYMBOL_DEMANGLED_NAME): Ditto. (SYMBOL_CHILL_DEMANGLED_NAME): Ditto. * defs.h (enum language): Ditto. * symtab.c (got_symtab): Ditto. * utils.c (fprintf_symbol_filtered): Ditto. * ch-typeprint.c: Make file obsolete. * ch-valprint.c: Make file obsolete. * ch-lang.h: Make file obsolete. * ch-exp.c: Make file obsolete. * ch-lang.c: Make file obsolete. * Makefile.in (FLAGS_TO_PASS): Do not pass CHILL or CHILLFLAGS or CHILL_LIB. (TARGET_FLAGS_TO_PASS): Ditto. (CHILLFLAGS): Obsolete. (CHILL): Obsolete. (CHILL_FOR_TARGET): Obsolete. (CHILL_LIB): Obsolete. (SFILES): Remove ch-exp.c, ch-lang.c, ch-typeprint.c and ch-valprint.c. (HFILES_NO_SRCDIR): Remove ch-lang.h. (COMMON_OBS): Remove ch-valprint.o, ch-typeprint.o, ch-exp.o and ch-lang.o. (ch-exp.o, ch-lang.o, ch-typeprint.o, ch-valprint.o): Delete targets. 2002-08-01 Andrew Cagney <cagney@redhat.com> * stabs.texinfo, gdb.texinfo, gdbint.texinfo: Obsolete references to CHILL. 2002-08-01 Andrew Cagney <cagney@redhat.com> * Makefile.in (TARGET_FLAGS_TO_PASS): Remove CHILLFLAGS, CHILL, CHILL_FOR_TARGET and CHILL_LIB. * configure.in (configdirs): Remove gdb.chill. * configure: Regenerate. * lib/gdb.exp: Obsolete references to chill. * gdb.fortran/types.exp: Ditto. * gdb.fortran/exprs.exp: Ditto.
387 lines
14 KiB
C
387 lines
14 KiB
C
/* Definitions for expressions stored in reversed prefix form, for GDB.
|
|
Copyright 1986, 1989, 1992, 1994, 2000 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 2 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, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#if !defined (EXPRESSION_H)
|
|
#define EXPRESSION_H 1
|
|
|
|
|
|
#include "symtab.h" /* Needed for "struct block" type. */
|
|
#include "doublest.h" /* Needed for DOUBLEST. */
|
|
|
|
|
|
/* Definitions for saved C expressions. */
|
|
|
|
/* An expression is represented as a vector of union exp_element's.
|
|
Each exp_element is an opcode, except that some opcodes cause
|
|
the following exp_element to be treated as a long or double constant
|
|
or as a variable. The opcodes are obeyed, using a stack for temporaries.
|
|
The value is left on the temporary stack at the end. */
|
|
|
|
/* When it is necessary to include a string,
|
|
it can occupy as many exp_elements as it needs.
|
|
We find the length of the string using strlen,
|
|
divide to find out how many exp_elements are used up,
|
|
and skip that many. Strings, like numbers, are indicated
|
|
by the preceding opcode. */
|
|
|
|
enum exp_opcode
|
|
{
|
|
/* Used when it's necessary to pass an opcode which will be ignored,
|
|
or to catch uninitialized values. */
|
|
OP_NULL,
|
|
|
|
/* BINOP_... operate on two values computed by following subexpressions,
|
|
replacing them by one result value. They take no immediate arguments. */
|
|
|
|
BINOP_ADD, /* + */
|
|
BINOP_SUB, /* - */
|
|
BINOP_MUL, /* * */
|
|
BINOP_DIV, /* / */
|
|
BINOP_REM, /* % */
|
|
BINOP_MOD, /* mod (Knuth 1.2.4) */
|
|
BINOP_LSH, /* << */
|
|
BINOP_RSH, /* >> */
|
|
BINOP_LOGICAL_AND, /* && */
|
|
BINOP_LOGICAL_OR, /* || */
|
|
BINOP_BITWISE_AND, /* & */
|
|
BINOP_BITWISE_IOR, /* | */
|
|
BINOP_BITWISE_XOR, /* ^ */
|
|
BINOP_EQUAL, /* == */
|
|
BINOP_NOTEQUAL, /* != */
|
|
BINOP_LESS, /* < */
|
|
BINOP_GTR, /* > */
|
|
BINOP_LEQ, /* <= */
|
|
BINOP_GEQ, /* >= */
|
|
BINOP_REPEAT, /* @ */
|
|
BINOP_ASSIGN, /* = */
|
|
BINOP_COMMA, /* , */
|
|
BINOP_SUBSCRIPT, /* x[y] */
|
|
BINOP_EXP, /* Exponentiation */
|
|
|
|
/* C++. */
|
|
|
|
BINOP_MIN, /* <? */
|
|
BINOP_MAX, /* >? */
|
|
|
|
/* STRUCTOP_MEMBER is used for pointer-to-member constructs.
|
|
X . * Y translates into X STRUCTOP_MEMBER Y. */
|
|
STRUCTOP_MEMBER,
|
|
|
|
/* STRUCTOP_MPTR is used for pointer-to-member constructs
|
|
when X is a pointer instead of an aggregate. */
|
|
STRUCTOP_MPTR,
|
|
|
|
/* end of C++. */
|
|
|
|
/* For Modula-2 integer division DIV */
|
|
BINOP_INTDIV,
|
|
|
|
BINOP_ASSIGN_MODIFY, /* +=, -=, *=, and so on.
|
|
The following exp_element is another opcode,
|
|
a BINOP_, saying how to modify.
|
|
Then comes another BINOP_ASSIGN_MODIFY,
|
|
making three exp_elements in total. */
|
|
|
|
/* Modula-2 standard (binary) procedures */
|
|
BINOP_VAL,
|
|
BINOP_INCL,
|
|
BINOP_EXCL,
|
|
|
|
/* Concatenate two operands, such as character strings or bitstrings.
|
|
If the first operand is a integer expression, then it means concatenate
|
|
the second operand with itself that many times. */
|
|
BINOP_CONCAT,
|
|
|
|
/* For (OBSOLETE) Chill (OBSOLETE) and Pascal. */
|
|
BINOP_IN, /* Returns 1 iff ARG1 IN ARG2. */
|
|
|
|
/* This is the "colon operator" used various places in (OBSOLETE)
|
|
Chill (OBSOLETE). */
|
|
BINOP_RANGE,
|
|
|
|
/* This must be the highest BINOP_ value, for expprint.c. */
|
|
BINOP_END,
|
|
|
|
/* Operates on three values computed by following subexpressions. */
|
|
TERNOP_COND, /* ?: */
|
|
|
|
/* A sub-string/sub-array. (OBSOLETE) Chill (OBSOLETE) syntax:
|
|
OP1(OP2:OP3). Return elements OP2 through OP3 of OP1. */
|
|
TERNOP_SLICE,
|
|
|
|
/* A sub-string/sub-array. (OBSOLETE) Chill (OBSOLETE) syntax:
|
|
OP1(OP2 UP OP3). Return OP3 elements of OP1, starting with
|
|
element OP2. */
|
|
TERNOP_SLICE_COUNT,
|
|
|
|
/* Multidimensional subscript operator, such as Modula-2 x[a,b,...].
|
|
The dimensionality is encoded in the operator, like the number of
|
|
function arguments in OP_FUNCALL, I.E. <OP><dimension><OP>.
|
|
The value of the first following subexpression is subscripted
|
|
by each of the next following subexpressions, one per dimension. */
|
|
MULTI_SUBSCRIPT,
|
|
|
|
/* The OP_... series take immediate following arguments.
|
|
After the arguments come another OP_... (the same one)
|
|
so that the grouping can be recognized from the end. */
|
|
|
|
/* OP_LONG is followed by a type pointer in the next exp_element
|
|
and the long constant value in the following exp_element.
|
|
Then comes another OP_LONG.
|
|
Thus, the operation occupies four exp_elements. */
|
|
OP_LONG,
|
|
|
|
/* OP_DOUBLE is similar but takes a DOUBLEST constant instead of a long. */
|
|
OP_DOUBLE,
|
|
|
|
/* OP_VAR_VALUE takes one struct block * in the following element,
|
|
and one struct symbol * in the following exp_element, followed by
|
|
another OP_VAR_VALUE, making four exp_elements. If the block is
|
|
non-NULL, evaluate the symbol relative to the innermost frame
|
|
executing in that block; if the block is NULL use the selected frame. */
|
|
OP_VAR_VALUE,
|
|
|
|
/* OP_LAST is followed by an integer in the next exp_element.
|
|
The integer is zero for the last value printed,
|
|
or it is the absolute number of a history element.
|
|
With another OP_LAST at the end, this makes three exp_elements. */
|
|
OP_LAST,
|
|
|
|
/* OP_REGISTER is followed by an integer in the next exp_element.
|
|
This is the number of a register to fetch (as an int).
|
|
With another OP_REGISTER at the end, this makes three exp_elements. */
|
|
OP_REGISTER,
|
|
|
|
/* OP_INTERNALVAR is followed by an internalvar ptr in the next exp_element.
|
|
With another OP_INTERNALVAR at the end, this makes three exp_elements. */
|
|
OP_INTERNALVAR,
|
|
|
|
/* OP_FUNCALL is followed by an integer in the next exp_element.
|
|
The integer is the number of args to the function call.
|
|
That many plus one values from following subexpressions
|
|
are used, the first one being the function.
|
|
The integer is followed by a repeat of OP_FUNCALL,
|
|
making three exp_elements. */
|
|
OP_FUNCALL,
|
|
|
|
/* This is EXACTLY like OP_FUNCALL but is semantically different.
|
|
In F77, array subscript expressions, substring expressions
|
|
and function calls are all exactly the same syntactically. They may
|
|
only be dismabiguated at runtime. Thus this operator, which
|
|
indicates that we have found something of the form <name> ( <stuff> ) */
|
|
OP_F77_UNDETERMINED_ARGLIST,
|
|
|
|
/* The following OP is a special one, it introduces a F77 complex
|
|
literal. It is followed by exactly two args that are doubles. */
|
|
OP_COMPLEX,
|
|
|
|
/* OP_STRING represents a string constant.
|
|
Its format is the same as that of a STRUCTOP, but the string
|
|
data is just made into a string constant when the operation
|
|
is executed. */
|
|
OP_STRING,
|
|
|
|
/* OP_BITSTRING represents a packed bitstring constant.
|
|
Its format is the same as that of a STRUCTOP, but the bitstring
|
|
data is just made into a bitstring constant when the operation
|
|
is executed. */
|
|
OP_BITSTRING,
|
|
|
|
/* OP_ARRAY creates an array constant out of the following subexpressions.
|
|
It is followed by two exp_elements, the first containing an integer
|
|
that is the lower bound of the array and the second containing another
|
|
integer that is the upper bound of the array. The second integer is
|
|
followed by a repeat of OP_ARRAY, making four exp_elements total.
|
|
The bounds are used to compute the number of following subexpressions
|
|
to consume, as well as setting the bounds in the created array constant.
|
|
The type of the elements is taken from the type of the first subexp,
|
|
and they must all match. */
|
|
OP_ARRAY,
|
|
|
|
/* UNOP_CAST is followed by a type pointer in the next exp_element.
|
|
With another UNOP_CAST at the end, this makes three exp_elements.
|
|
It casts the value of the following subexpression. */
|
|
UNOP_CAST,
|
|
|
|
/* UNOP_MEMVAL is followed by a type pointer in the next exp_element
|
|
With another UNOP_MEMVAL at the end, this makes three exp_elements.
|
|
It casts the contents of the word addressed by the value of the
|
|
following subexpression. */
|
|
UNOP_MEMVAL,
|
|
|
|
/* UNOP_... operate on one value from a following subexpression
|
|
and replace it with a result. They take no immediate arguments. */
|
|
|
|
UNOP_NEG, /* Unary - */
|
|
UNOP_LOGICAL_NOT, /* Unary ! */
|
|
UNOP_COMPLEMENT, /* Unary ~ */
|
|
UNOP_IND, /* Unary * */
|
|
UNOP_ADDR, /* Unary & */
|
|
UNOP_PREINCREMENT, /* ++ before an expression */
|
|
UNOP_POSTINCREMENT, /* ++ after an expression */
|
|
UNOP_PREDECREMENT, /* -- before an expression */
|
|
UNOP_POSTDECREMENT, /* -- after an expression */
|
|
UNOP_SIZEOF, /* Unary sizeof (followed by expression) */
|
|
|
|
UNOP_PLUS, /* Unary plus */
|
|
|
|
UNOP_CAP, /* Modula-2 standard (unary) procedures */
|
|
UNOP_CHR,
|
|
UNOP_ORD,
|
|
UNOP_ABS,
|
|
UNOP_FLOAT,
|
|
UNOP_HIGH,
|
|
UNOP_MAX,
|
|
UNOP_MIN,
|
|
UNOP_ODD,
|
|
UNOP_TRUNC,
|
|
|
|
/* (OBSOLETE) Chill (OBSOLETE) builtin functions. */
|
|
UNOP_LOWER, UNOP_UPPER, UNOP_LENGTH, UNOP_CARD, UNOP_CHMAX, UNOP_CHMIN,
|
|
|
|
OP_BOOL, /* Modula-2 builtin BOOLEAN type */
|
|
OP_M2_STRING, /* Modula-2 string constants */
|
|
|
|
/* STRUCTOP_... operate on a value from a following subexpression
|
|
by extracting a structure component specified by a string
|
|
that appears in the following exp_elements (as many as needed).
|
|
STRUCTOP_STRUCT is used for "." and STRUCTOP_PTR for "->".
|
|
They differ only in the error message given in case the value is
|
|
not suitable or the structure component specified is not found.
|
|
|
|
The length of the string follows the opcode, followed by
|
|
BYTES_TO_EXP_ELEM(length) elements containing the data of the
|
|
string, followed by the length again and the opcode again. */
|
|
|
|
STRUCTOP_STRUCT,
|
|
STRUCTOP_PTR,
|
|
|
|
/* C++ */
|
|
/* OP_THIS is just a placeholder for the class instance variable.
|
|
It just comes in a tight (OP_THIS, OP_THIS) pair. */
|
|
OP_THIS,
|
|
|
|
/* OP_SCOPE surrounds a type name and a field name. The type
|
|
name is encoded as one element, but the field name stays as
|
|
a string, which, of course, is variable length. */
|
|
OP_SCOPE,
|
|
|
|
/* Used to represent named structure field values in brace
|
|
initializers (or tuples as they are called in (OBSOLETE) Chill
|
|
(OBSOLETE)).
|
|
|
|
The gcc C syntax is NAME:VALUE or .NAME=VALUE, the (OBSOLETE)
|
|
Chill (OBSOLETE) syntax is .NAME:VALUE. Multiple labels (as in
|
|
the (OBSOLETE) Chill (OBSOLETE) syntax .NAME1,.NAME2:VALUE) is
|
|
represented as if it were .NAME1:(.NAME2:VALUE) (though that is
|
|
not valid (OBSOLETE) Chill (OBSOLETE) syntax).
|
|
|
|
The NAME is represented as for STRUCTOP_STRUCT; VALUE follows. */
|
|
OP_LABELED,
|
|
|
|
/* 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
|
|
the GDB "::" operator, or the Modula-2 '.' operator. */
|
|
OP_TYPE,
|
|
|
|
/* An un-looked-up identifier. */
|
|
OP_NAME,
|
|
|
|
/* An unparsed expression. Used for Scheme (for now at least) */
|
|
OP_EXPRSTRING
|
|
};
|
|
|
|
union exp_element
|
|
{
|
|
enum exp_opcode opcode;
|
|
struct symbol *symbol;
|
|
LONGEST longconst;
|
|
DOUBLEST doubleconst;
|
|
/* Really sizeof (union exp_element) characters (or less for the last
|
|
element of a string). */
|
|
char string;
|
|
struct type *type;
|
|
struct internalvar *internalvar;
|
|
struct block *block;
|
|
};
|
|
|
|
struct expression
|
|
{
|
|
const struct language_defn *language_defn; /* language it was entered in */
|
|
int nelts;
|
|
union exp_element elts[1];
|
|
};
|
|
|
|
/* Macros for converting between number of expression elements and bytes
|
|
to store that many expression elements. */
|
|
|
|
#define EXP_ELEM_TO_BYTES(elements) \
|
|
((elements) * sizeof (union exp_element))
|
|
#define BYTES_TO_EXP_ELEM(bytes) \
|
|
(((bytes) + sizeof (union exp_element) - 1) / sizeof (union exp_element))
|
|
|
|
/* From parse.c */
|
|
|
|
extern struct expression *parse_expression (char *);
|
|
|
|
extern struct expression *parse_exp_1 (char **, struct block *, int);
|
|
|
|
/* The innermost context required by the stack and register variables
|
|
we've encountered so far. To use this, set it to NULL, then call
|
|
parse_<whatever>, then look at it. */
|
|
extern struct block *innermost_block;
|
|
|
|
/* From eval.c */
|
|
|
|
/* Values of NOSIDE argument to eval_subexp. */
|
|
|
|
enum noside
|
|
{
|
|
EVAL_NORMAL,
|
|
EVAL_SKIP, /* Only effect is to increment pos. */
|
|
EVAL_AVOID_SIDE_EFFECTS /* Don't modify any variables or
|
|
call any functions. The value
|
|
returned will have the correct
|
|
type, and will have an
|
|
approximately correct lvalue
|
|
type (inaccuracy: anything that is
|
|
listed as being in a register in
|
|
the function in which it was
|
|
declared will be lval_register). */
|
|
};
|
|
|
|
extern struct value *evaluate_subexp_standard
|
|
(struct type *, struct expression *, int *, enum noside);
|
|
|
|
/* From expprint.c */
|
|
|
|
extern void print_expression (struct expression *, struct ui_file *);
|
|
|
|
extern char *op_string (enum exp_opcode);
|
|
|
|
extern void dump_prefix_expression (struct expression *,
|
|
struct ui_file *,
|
|
char *);
|
|
extern void dump_postfix_expression (struct expression *,
|
|
struct ui_file *,
|
|
char *);
|
|
|
|
#endif /* !defined (EXPRESSION_H) */
|