/* Evaluate expressions for GDB.
- Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
-#include <stdio.h>
#include "defs.h"
+#include "gdb_string.h"
#include "symtab.h"
+#include "gdbtypes.h"
#include "value.h"
#include "expression.h"
#include "target.h"
#include "frame.h"
+#include "language.h" /* For CAST_IS_CONVERSION */
+#include "f-lang.h" /* for array bound stuff */
+#include "cp-abi.h"
-#define NULL_TYPE ((struct type *)0)
+/* Defined in symtab.c */
+extern int hp_som_som_object_present;
+/* This is defined in valops.c */
+extern int overload_resolution;
+
+/* JYG: lookup rtti type of STRUCTOP_PTR when this is set to continue
+ on with successful lookup for member/method of the rtti type. */
+extern int objectprint;
+
+/* Prototypes for local functions. */
+
+static struct value *evaluate_subexp_for_sizeof (struct expression *, int *);
+
+static struct value *evaluate_subexp_for_address (struct expression *,
+ int *, enum noside);
+
+static struct value *evaluate_subexp (struct type *, struct expression *,
+ int *, enum noside);
+
+static char *get_label (struct expression *, int *);
+
+static struct value *evaluate_struct_tuple (struct value *,
+ struct expression *, int *,
+ enum noside, int);
+
+static LONGEST init_array_element (struct value *, struct value *,
+ struct expression *, int *, enum noside,
+ LONGEST, LONGEST);
+
+static struct value *
+evaluate_subexp (struct type *expect_type, register struct expression *exp,
+ register int *pos, enum noside noside)
+{
+ return (*exp->language_defn->evaluate_exp) (expect_type, exp, pos, noside);
+}
\f
/* Parse the string EXP as a C expression, evaluate it,
and return the result as a number. */
CORE_ADDR
-parse_and_eval_address (exp)
- char *exp;
+parse_and_eval_address (char *exp)
{
struct expression *expr = parse_expression (exp);
register CORE_ADDR addr;
- register struct cleanup *old_chain
- = make_cleanup (free_current_contents, &expr);
+ register struct cleanup *old_chain =
+ make_cleanup (free_current_contents, &expr);
- addr = value_as_pointer (evaluate_expression (expr));
+ addr = value_as_address (evaluate_expression (expr));
do_cleanups (old_chain);
return addr;
}
and advanced that variable across the characters parsed. */
CORE_ADDR
-parse_and_eval_address_1 (expptr)
- char **expptr;
+parse_and_eval_address_1 (char **expptr)
{
- struct expression *expr = parse_exp_1 (expptr, (struct block *)0, 0);
+ struct expression *expr = parse_exp_1 (expptr, (struct block *) 0, 0);
register CORE_ADDR addr;
- register struct cleanup *old_chain
- = make_cleanup (free_current_contents, &expr);
+ register struct cleanup *old_chain =
+ make_cleanup (free_current_contents, &expr);
- addr = value_as_pointer (evaluate_expression (expr));
+ addr = value_as_address (evaluate_expression (expr));
do_cleanups (old_chain);
return addr;
}
-value
-parse_and_eval (exp)
- char *exp;
+/* Like parse_and_eval_address, but treats the value of the expression
+ as an integer, not an address, returns a LONGEST, not a CORE_ADDR */
+LONGEST
+parse_and_eval_long (char *exp)
+{
+ struct expression *expr = parse_expression (exp);
+ register LONGEST retval;
+ register struct cleanup *old_chain =
+ make_cleanup (free_current_contents, &expr);
+
+ retval = value_as_long (evaluate_expression (expr));
+ do_cleanups (old_chain);
+ return (retval);
+}
+
+struct value *
+parse_and_eval (char *exp)
{
struct expression *expr = parse_expression (exp);
- register value val;
+ struct value *val;
register struct cleanup *old_chain
- = make_cleanup (free_current_contents, &expr);
+ = make_cleanup (free_current_contents, &expr);
val = evaluate_expression (expr);
do_cleanups (old_chain);
in the string EXPP as an expression, evaluate it, and return the value.
EXPP is advanced to point to the comma. */
-value
-parse_to_comma_and_eval (expp)
- char **expp;
+struct value *
+parse_to_comma_and_eval (char **expp)
{
struct expression *expr = parse_exp_1 (expp, (struct block *) 0, 1);
- register value val;
+ struct value *val;
register struct cleanup *old_chain
- = make_cleanup (free_current_contents, &expr);
+ = make_cleanup (free_current_contents, &expr);
val = evaluate_expression (expr);
do_cleanups (old_chain);
See expression.h for info on the format of an expression. */
-static value evaluate_subexp ();
-static value evaluate_subexp_for_address ();
-static value evaluate_subexp_for_sizeof ();
-static value evaluate_subexp_with_coercion ();
-
-/* 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). */
-};
-
-value
-evaluate_expression (exp)
- struct expression *exp;
+struct value *
+evaluate_expression (struct expression *exp)
{
int pc = 0;
return evaluate_subexp (NULL_TYPE, exp, &pc, EVAL_NORMAL);
/* Evaluate an expression, avoiding all memory references
and getting a value whose type alone is correct. */
-value
-evaluate_type (exp)
- struct expression *exp;
+struct value *
+evaluate_type (struct expression *exp)
{
int pc = 0;
return evaluate_subexp (NULL_TYPE, exp, &pc, EVAL_AVOID_SIDE_EFFECTS);
}
-static value
-evaluate_subexp (expect_type, exp, pos, noside)
- struct type *expect_type;
- register struct expression *exp;
- register int *pos;
- enum noside noside;
+/* If the next expression is an OP_LABELED, skips past it,
+ returning the label. Otherwise, does nothing and returns NULL. */
+
+static char *
+get_label (register struct expression *exp, int *pos)
+{
+ if (exp->elts[*pos].opcode == OP_LABELED)
+ {
+ int pc = (*pos)++;
+ char *name = &exp->elts[pc + 2].string;
+ int tem = longest_to_int (exp->elts[pc + 1].longconst);
+ (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
+ return name;
+ }
+ else
+ return NULL;
+}
+
+/* This function evaluates tuples (in Chill) or brace-initializers
+ (in C/C++) for structure types. */
+
+static struct value *
+evaluate_struct_tuple (struct value *struct_val,
+ register struct expression *exp,
+ register int *pos, enum noside noside, int nargs)
+{
+ struct type *struct_type = check_typedef (VALUE_TYPE (struct_val));
+ struct type *substruct_type = struct_type;
+ struct type *field_type;
+ int fieldno = -1;
+ int variantno = -1;
+ int subfieldno = -1;
+ while (--nargs >= 0)
+ {
+ int pc = *pos;
+ struct value *val = NULL;
+ int nlabels = 0;
+ int bitpos, bitsize;
+ char *addr;
+
+ /* Skip past the labels, and count them. */
+ while (get_label (exp, pos) != NULL)
+ nlabels++;
+
+ do
+ {
+ char *label = get_label (exp, &pc);
+ if (label)
+ {
+ for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type);
+ fieldno++)
+ {
+ char *field_name = TYPE_FIELD_NAME (struct_type, fieldno);
+ if (field_name != NULL && STREQ (field_name, label))
+ {
+ variantno = -1;
+ subfieldno = fieldno;
+ substruct_type = struct_type;
+ goto found;
+ }
+ }
+ for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type);
+ fieldno++)
+ {
+ char *field_name = TYPE_FIELD_NAME (struct_type, fieldno);
+ field_type = TYPE_FIELD_TYPE (struct_type, fieldno);
+ if ((field_name == 0 || *field_name == '\0')
+ && TYPE_CODE (field_type) == TYPE_CODE_UNION)
+ {
+ variantno = 0;
+ for (; variantno < TYPE_NFIELDS (field_type);
+ variantno++)
+ {
+ substruct_type
+ = TYPE_FIELD_TYPE (field_type, variantno);
+ if (TYPE_CODE (substruct_type) == TYPE_CODE_STRUCT)
+ {
+ for (subfieldno = 0;
+ subfieldno < TYPE_NFIELDS (substruct_type);
+ subfieldno++)
+ {
+ if (STREQ (TYPE_FIELD_NAME (substruct_type,
+ subfieldno),
+ label))
+ {
+ goto found;
+ }
+ }
+ }
+ }
+ }
+ }
+ error ("there is no field named %s", label);
+ found:
+ ;
+ }
+ else
+ {
+ /* Unlabelled tuple element - go to next field. */
+ if (variantno >= 0)
+ {
+ subfieldno++;
+ if (subfieldno >= TYPE_NFIELDS (substruct_type))
+ {
+ variantno = -1;
+ substruct_type = struct_type;
+ }
+ }
+ if (variantno < 0)
+ {
+ fieldno++;
+ subfieldno = fieldno;
+ if (fieldno >= TYPE_NFIELDS (struct_type))
+ error ("too many initializers");
+ field_type = TYPE_FIELD_TYPE (struct_type, fieldno);
+ if (TYPE_CODE (field_type) == TYPE_CODE_UNION
+ && TYPE_FIELD_NAME (struct_type, fieldno)[0] == '0')
+ error ("don't know which variant you want to set");
+ }
+ }
+
+ /* Here, struct_type is the type of the inner struct,
+ while substruct_type is the type of the inner struct.
+ These are the same for normal structures, but a variant struct
+ contains anonymous union fields that contain substruct fields.
+ The value fieldno is the index of the top-level (normal or
+ anonymous union) field in struct_field, while the value
+ subfieldno is the index of the actual real (named inner) field
+ in substruct_type. */
+
+ field_type = TYPE_FIELD_TYPE (substruct_type, subfieldno);
+ if (val == 0)
+ val = evaluate_subexp (field_type, exp, pos, noside);
+
+ /* Now actually set the field in struct_val. */
+
+ /* Assign val to field fieldno. */
+ if (VALUE_TYPE (val) != field_type)
+ val = value_cast (field_type, val);
+
+ bitsize = TYPE_FIELD_BITSIZE (substruct_type, subfieldno);
+ bitpos = TYPE_FIELD_BITPOS (struct_type, fieldno);
+ if (variantno >= 0)
+ bitpos += TYPE_FIELD_BITPOS (substruct_type, subfieldno);
+ addr = VALUE_CONTENTS (struct_val) + bitpos / 8;
+ if (bitsize)
+ modify_field (addr, value_as_long (val),
+ bitpos % 8, bitsize);
+ else
+ memcpy (addr, VALUE_CONTENTS (val),
+ TYPE_LENGTH (VALUE_TYPE (val)));
+ }
+ while (--nlabels > 0);
+ }
+ return struct_val;
+}
+
+/* Recursive helper function for setting elements of array tuples for Chill.
+ The target is ARRAY (which has bounds LOW_BOUND to HIGH_BOUND);
+ the element value is ELEMENT;
+ EXP, POS and NOSIDE are as usual.
+ Evaluates index expresions and sets the specified element(s) of
+ ARRAY to ELEMENT.
+ Returns last index value. */
+
+static LONGEST
+init_array_element (struct value *array, struct value *element,
+ register struct expression *exp, register int *pos,
+ enum noside noside, LONGEST low_bound, LONGEST high_bound)
+{
+ LONGEST index;
+ int element_size = TYPE_LENGTH (VALUE_TYPE (element));
+ if (exp->elts[*pos].opcode == BINOP_COMMA)
+ {
+ (*pos)++;
+ init_array_element (array, element, exp, pos, noside,
+ low_bound, high_bound);
+ return init_array_element (array, element,
+ exp, pos, noside, low_bound, high_bound);
+ }
+ else if (exp->elts[*pos].opcode == BINOP_RANGE)
+ {
+ LONGEST low, high;
+ (*pos)++;
+ low = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ high = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ if (low < low_bound || high > high_bound)
+ error ("tuple range index out of range");
+ for (index = low; index <= high; index++)
+ {
+ memcpy (VALUE_CONTENTS_RAW (array)
+ + (index - low_bound) * element_size,
+ VALUE_CONTENTS (element), element_size);
+ }
+ }
+ else
+ {
+ index = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ if (index < low_bound || index > high_bound)
+ error ("tuple index out of range");
+ memcpy (VALUE_CONTENTS_RAW (array) + (index - low_bound) * element_size,
+ VALUE_CONTENTS (element), element_size);
+ }
+ return index;
+}
+
+struct value *
+evaluate_subexp_standard (struct type *expect_type,
+ register struct expression *exp, register int *pos,
+ enum noside noside)
{
enum exp_opcode op;
- int tem;
- register int pc, pc2, oldpos;
- register value arg1, arg2, arg3;
+ int tem, tem2, tem3;
+ register int pc, pc2 = 0, oldpos;
+ struct value *arg1 = NULL;
+ struct value *arg2 = NULL;
+ struct value *arg3;
+ struct type *type;
int nargs;
- value *argvec;
+ struct value **argvec;
+ int upper, lower, retcode;
+ int code;
+ int ix;
+ long mem_offset;
+ struct type **arg_types;
+ int save_pos1;
pc = (*pos)++;
op = exp->elts[pc].opcode;
switch (op)
{
case OP_SCOPE:
- tem = strlen (&exp->elts[pc + 2].string);
- (*pos) += 3 + ((tem + sizeof (union exp_element))
- / sizeof (union exp_element));
- arg1 = value_static_field (exp->elts[pc + 1].type,
- &exp->elts[pc + 2].string, -1);
+ tem = longest_to_int (exp->elts[pc + 2].longconst);
+ (*pos) += 4 + BYTES_TO_EXP_ELEM (tem + 1);
+ arg1 = value_struct_elt_for_reference (exp->elts[pc + 1].type,
+ 0,
+ exp->elts[pc + 1].type,
+ &exp->elts[pc + 3].string,
+ NULL_TYPE);
if (arg1 == NULL)
- error ("There is no field named %s", &exp->elts[pc + 2].string);
+ error ("There is no field named %s", &exp->elts[pc + 3].string);
return arg1;
case OP_LONG:
(*pos) += 3;
return value_from_longest (exp->elts[pc + 1].type,
- exp->elts[pc + 2].longconst);
+ exp->elts[pc + 2].longconst);
case OP_DOUBLE:
(*pos) += 3;
exp->elts[pc + 2].doubleconst);
case OP_VAR_VALUE:
- (*pos) += 2;
+ (*pos) += 3;
if (noside == EVAL_SKIP)
goto nosideret;
- if (noside == EVAL_AVOID_SIDE_EFFECTS)
- {
- struct symbol * sym = exp->elts[pc + 1].symbol;
- enum lval_type lv;
- switch (SYMBOL_CLASS (sym))
- {
- case LOC_CONST:
- case LOC_LABEL:
- case LOC_CONST_BYTES:
- lv = not_lval;
- break;
-
- case LOC_REGISTER:
- case LOC_REGPARM:
- lv = lval_register;
- break;
-
- default:
- lv = lval_memory;
- break;
- }
+ /* JYG: We used to just return value_zero of the symbol type
+ if we're asked to avoid side effects. Otherwise we return
+ value_of_variable (...). However I'm not sure if
+ value_of_variable () has any side effect.
+ We need a full value object returned here for whatis_exp ()
+ to call evaluate_type () and then pass the full value to
+ value_rtti_target_type () if we are dealing with a pointer
+ or reference to a base class and print object is on. */
- return value_zero (SYMBOL_TYPE (sym), lv);
- }
- else
- return value_of_variable (exp->elts[pc + 1].symbol);
+ return value_of_variable (exp->elts[pc + 2].symbol,
+ exp->elts[pc + 1].block);
case OP_LAST:
(*pos) += 2;
access_value_history (longest_to_int (exp->elts[pc + 1].longconst));
case OP_REGISTER:
+ {
+ int regno = longest_to_int (exp->elts[pc + 1].longconst);
+ struct value *val = value_of_register (regno);
+
+ (*pos) += 2;
+ if (val == NULL)
+ error ("Value of register %s not available.", REGISTER_NAME (regno));
+ else
+ return val;
+ }
+ case OP_BOOL:
(*pos) += 2;
- return value_of_register (longest_to_int (exp->elts[pc + 1].longconst));
+ return value_from_longest (LA_BOOL_TYPE,
+ exp->elts[pc + 1].longconst);
case OP_INTERNALVAR:
(*pos) += 2;
return value_of_internalvar (exp->elts[pc + 1].internalvar);
case OP_STRING:
- tem = strlen (&exp->elts[pc + 1].string);
- (*pos) += 2 + ((tem + sizeof (union exp_element))
- / sizeof (union exp_element));
+ tem = longest_to_int (exp->elts[pc + 1].longconst);
+ (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ return value_string (&exp->elts[pc + 2].string, tem);
+
+ case OP_BITSTRING:
+ tem = longest_to_int (exp->elts[pc + 1].longconst);
+ (*pos)
+ += 3 + BYTES_TO_EXP_ELEM ((tem + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT);
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ return value_bitstring (&exp->elts[pc + 2].string, tem);
+ break;
+
+ case OP_ARRAY:
+ (*pos) += 3;
+ tem2 = longest_to_int (exp->elts[pc + 1].longconst);
+ tem3 = longest_to_int (exp->elts[pc + 2].longconst);
+ nargs = tem3 - tem2 + 1;
+ type = expect_type ? check_typedef (expect_type) : NULL_TYPE;
+
+ if (expect_type != NULL_TYPE && noside != EVAL_SKIP
+ && TYPE_CODE (type) == TYPE_CODE_STRUCT)
+ {
+ struct value *rec = allocate_value (expect_type);
+ memset (VALUE_CONTENTS_RAW (rec), '\0', TYPE_LENGTH (type));
+ return evaluate_struct_tuple (rec, exp, pos, noside, nargs);
+ }
+
+ if (expect_type != NULL_TYPE && noside != EVAL_SKIP
+ && TYPE_CODE (type) == TYPE_CODE_ARRAY)
+ {
+ struct type *range_type = TYPE_FIELD_TYPE (type, 0);
+ struct type *element_type = TYPE_TARGET_TYPE (type);
+ struct value *array = allocate_value (expect_type);
+ int element_size = TYPE_LENGTH (check_typedef (element_type));
+ LONGEST low_bound, high_bound, index;
+ if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0)
+ {
+ low_bound = 0;
+ high_bound = (TYPE_LENGTH (type) / element_size) - 1;
+ }
+ index = low_bound;
+ memset (VALUE_CONTENTS_RAW (array), 0, TYPE_LENGTH (expect_type));
+ for (tem = nargs; --nargs >= 0;)
+ {
+ struct value *element;
+ int index_pc = 0;
+ if (exp->elts[*pos].opcode == BINOP_RANGE)
+ {
+ index_pc = ++(*pos);
+ evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
+ }
+ element = evaluate_subexp (element_type, exp, pos, noside);
+ if (VALUE_TYPE (element) != element_type)
+ element = value_cast (element_type, element);
+ if (index_pc)
+ {
+ int continue_pc = *pos;
+ *pos = index_pc;
+ index = init_array_element (array, element, exp, pos, noside,
+ low_bound, high_bound);
+ *pos = continue_pc;
+ }
+ else
+ {
+ if (index > high_bound)
+ /* to avoid memory corruption */
+ error ("Too many array elements");
+ memcpy (VALUE_CONTENTS_RAW (array)
+ + (index - low_bound) * element_size,
+ VALUE_CONTENTS (element),
+ element_size);
+ }
+ index++;
+ }
+ return array;
+ }
+
+ if (expect_type != NULL_TYPE && noside != EVAL_SKIP
+ && TYPE_CODE (type) == TYPE_CODE_SET)
+ {
+ struct value *set = allocate_value (expect_type);
+ char *valaddr = VALUE_CONTENTS_RAW (set);
+ struct type *element_type = TYPE_INDEX_TYPE (type);
+ struct type *check_type = element_type;
+ LONGEST low_bound, high_bound;
+
+ /* get targettype of elementtype */
+ while (TYPE_CODE (check_type) == TYPE_CODE_RANGE ||
+ TYPE_CODE (check_type) == TYPE_CODE_TYPEDEF)
+ check_type = TYPE_TARGET_TYPE (check_type);
+
+ if (get_discrete_bounds (element_type, &low_bound, &high_bound) < 0)
+ error ("(power)set type with unknown size");
+ memset (valaddr, '\0', TYPE_LENGTH (type));
+ for (tem = 0; tem < nargs; tem++)
+ {
+ LONGEST range_low, range_high;
+ struct type *range_low_type, *range_high_type;
+ struct value *elem_val;
+ if (exp->elts[*pos].opcode == BINOP_RANGE)
+ {
+ (*pos)++;
+ elem_val = evaluate_subexp (element_type, exp, pos, noside);
+ range_low_type = VALUE_TYPE (elem_val);
+ range_low = value_as_long (elem_val);
+ elem_val = evaluate_subexp (element_type, exp, pos, noside);
+ range_high_type = VALUE_TYPE (elem_val);
+ range_high = value_as_long (elem_val);
+ }
+ else
+ {
+ elem_val = evaluate_subexp (element_type, exp, pos, noside);
+ range_low_type = range_high_type = VALUE_TYPE (elem_val);
+ range_low = range_high = value_as_long (elem_val);
+ }
+ /* check types of elements to avoid mixture of elements from
+ different types. Also check if type of element is "compatible"
+ with element type of powerset */
+ if (TYPE_CODE (range_low_type) == TYPE_CODE_RANGE)
+ range_low_type = TYPE_TARGET_TYPE (range_low_type);
+ if (TYPE_CODE (range_high_type) == TYPE_CODE_RANGE)
+ range_high_type = TYPE_TARGET_TYPE (range_high_type);
+ if ((TYPE_CODE (range_low_type) != TYPE_CODE (range_high_type)) ||
+ (TYPE_CODE (range_low_type) == TYPE_CODE_ENUM &&
+ (range_low_type != range_high_type)))
+ /* different element modes */
+ error ("POWERSET tuple elements of different mode");
+ if ((TYPE_CODE (check_type) != TYPE_CODE (range_low_type)) ||
+ (TYPE_CODE (check_type) == TYPE_CODE_ENUM &&
+ range_low_type != check_type))
+ error ("incompatible POWERSET tuple elements");
+ if (range_low > range_high)
+ {
+ warning ("empty POWERSET tuple range");
+ continue;
+ }
+ if (range_low < low_bound || range_high > high_bound)
+ error ("POWERSET tuple element out of range");
+ range_low -= low_bound;
+ range_high -= low_bound;
+ for (; range_low <= range_high; range_low++)
+ {
+ int bit_index = (unsigned) range_low % TARGET_CHAR_BIT;
+ if (BITS_BIG_ENDIAN)
+ bit_index = TARGET_CHAR_BIT - 1 - bit_index;
+ valaddr[(unsigned) range_low / TARGET_CHAR_BIT]
+ |= 1 << bit_index;
+ }
+ }
+ return set;
+ }
+
+ argvec = (value_ptr *) alloca (sizeof (value_ptr) * nargs);
+ for (tem = 0; tem < nargs; tem++)
+ {
+ /* Ensure that array expressions are coerced into pointer objects. */
+ argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside);
+ }
if (noside == EVAL_SKIP)
goto nosideret;
- return value_string (&exp->elts[pc + 1].string, tem);
+ return value_array (tem2, tem3, argvec);
+
+ case TERNOP_SLICE:
+ {
+ struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ int lowbound
+ = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ int upper
+ = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ return value_slice (array, lowbound, upper - lowbound + 1);
+ }
+
+ case TERNOP_SLICE_COUNT:
+ {
+ struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ int lowbound
+ = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ int length
+ = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
+ return value_slice (array, lowbound, length);
+ }
case TERNOP_COND:
/* Skip third and second args to evaluate the first one. */
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- if (value_zerop (arg1))
+ if (value_logical_not (arg1))
{
evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
return evaluate_subexp (NULL_TYPE, exp, pos, noside);
case OP_FUNCALL:
(*pos) += 2;
op = exp->elts[*pos].opcode;
+ nargs = longest_to_int (exp->elts[pc + 1].longconst);
+ /* Allocate arg vector, including space for the function to be
+ called in argvec[0] and a terminating NULL */
+ argvec = (value_ptr *) alloca (sizeof (value_ptr) * (nargs + 3));
if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR)
{
- int fnptr;
+ LONGEST fnptr;
- nargs = longest_to_int (exp->elts[pc + 1].longconst) + 1;
+ /* 1997-08-01 Currently we do not support function invocation
+ via pointers-to-methods with HP aCC. Pointer does not point
+ to the function, but possibly to some thunk. */
+ if (hp_som_som_object_present)
+ {
+ error ("Not implemented: function invocation through pointer to method with HP aCC");
+ }
+
+ nargs++;
/* First, evaluate the structure into arg2 */
pc2 = (*pos)++;
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- fnptr = longest_to_int (value_as_long (arg1));
- /* FIXME-tiemann: this is way obsolete. */
- if (fnptr < 128)
+ fnptr = value_as_long (arg1);
+
+ if (METHOD_PTR_IS_VIRTUAL (fnptr))
{
+ int fnoffset = METHOD_PTR_TO_VOFFSET (fnptr);
struct type *basetype;
+ struct type *domain_type =
+ TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (VALUE_TYPE (arg1)));
int i, j;
basetype = TYPE_TARGET_TYPE (VALUE_TYPE (arg2));
- basetype = TYPE_VPTR_BASETYPE (basetype);
+ if (domain_type != basetype)
+ arg2 = value_cast (lookup_pointer_type (domain_type), arg2);
+ basetype = TYPE_VPTR_BASETYPE (domain_type);
for (i = TYPE_NFN_FIELDS (basetype) - 1; i >= 0; i--)
{
struct fn_field *f = TYPE_FN_FIELDLIST1 (basetype, i);
/* If one is virtual, then all are virtual. */
if (TYPE_FN_FIELD_VIRTUAL_P (f, 0))
for (j = TYPE_FN_FIELDLIST_LENGTH (basetype, i) - 1; j >= 0; --j)
- if (TYPE_FN_FIELD_VOFFSET (f, j) == fnptr)
+ if ((int) TYPE_FN_FIELD_VOFFSET (f, j) == fnoffset)
{
- value vtbl;
- value base = value_ind (arg2);
- struct type *fntype = lookup_pointer_type (TYPE_FN_FIELD_TYPE (f, j));
-
- if (TYPE_VPTR_FIELDNO (basetype) < 0)
- fill_in_vptr_fieldno (basetype);
-
- VALUE_TYPE (base) = basetype;
- vtbl = value_field (base, TYPE_VPTR_FIELDNO (basetype));
- VALUE_TYPE (vtbl) = lookup_pointer_type (fntype);
- VALUE_TYPE (arg1) = builtin_type_int;
- arg1 = value_subscript (vtbl, arg1);
- VALUE_TYPE (arg1) = fntype;
+ struct value *temp = value_ind (arg2);
+ arg1 = value_virtual_fn_field (&temp, f, j, domain_type, 0);
+ arg2 = value_addr (temp);
goto got_it;
}
}
if (i < 0)
- error ("virtual function at index %d not found", fnptr);
+ error ("virtual function at index %d not found", fnoffset);
}
else
{
/* Hair for method invocations */
int tem2;
- nargs = longest_to_int (exp->elts[pc + 1].longconst) + 1;
+ nargs++;
/* First, evaluate the structure into arg2 */
pc2 = (*pos)++;
- tem2 = strlen (&exp->elts[pc2 + 1].string);
- *pos += 2 + (tem2 + sizeof (union exp_element)) / sizeof (union exp_element);
+ tem2 = longest_to_int (exp->elts[pc2 + 1].longconst);
+ *pos += 3 + BYTES_TO_EXP_ELEM (tem2 + 1);
if (noside == EVAL_SKIP)
goto nosideret;
if (op == STRUCTOP_STRUCT)
{
+ /* If v is a variable in a register, and the user types
+ v.method (), this will produce an error, because v has
+ no address.
+
+ A possible way around this would be to allocate a
+ copy of the variable on the stack, copy in the
+ contents, call the function, and copy out the
+ contents. I.e. convert this from call by reference
+ to call by copy-return (or whatever it's called).
+ However, this does not work because it is not the
+ same: the method being called could stash a copy of
+ the address, and then future uses through that address
+ (after the method returns) would be expected to
+ use the variable itself, not some copy of it. */
arg2 = evaluate_subexp_for_address (exp, pos, noside);
}
else
}
else
{
- nargs = longest_to_int (exp->elts[pc + 1].longconst);
- tem = 0;
+ /* Non-method function call */
+ save_pos1 = *pos;
+ argvec[0] = evaluate_subexp_with_coercion (exp, pos, noside);
+ tem = 1;
+ type = VALUE_TYPE (argvec[0]);
+ if (type && TYPE_CODE (type) == TYPE_CODE_PTR)
+ type = TYPE_TARGET_TYPE (type);
+ if (type && TYPE_CODE (type) == TYPE_CODE_FUNC)
+ {
+ for (; tem <= nargs && tem <= TYPE_NFIELDS (type); tem++)
+ {
+ /* pai: FIXME This seems to be coercing arguments before
+ * overload resolution has been done! */
+ argvec[tem] = evaluate_subexp (TYPE_FIELD_TYPE (type, tem - 1),
+ exp, pos, noside);
+ }
+ }
}
- argvec = (value *) alloca (sizeof (value) * (nargs + 2));
+
+ /* Evaluate arguments */
for (; tem <= nargs; tem++)
- /* Ensure that array expressions are coerced into pointer objects. */
- argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside);
+ {
+ /* Ensure that array expressions are coerced into pointer objects. */
+ argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside);
+ }
/* signal end of arglist */
argvec[tem] = 0;
if (op == STRUCTOP_STRUCT || op == STRUCTOP_PTR)
{
int static_memfuncp;
- value temp = arg2;
+ struct value *temp = arg2;
+ char tstr[256];
+
+ /* Method invocation : stuff "this" as first parameter */
+ /* pai: this used to have lookup_pointer_type for some reason,
+ * but temp is already a pointer to the object */
+ argvec[1]
+ = value_from_pointer (VALUE_TYPE (temp),
+ VALUE_ADDRESS (temp) + VALUE_OFFSET (temp));
+ /* Name of method from expression */
+ strcpy (tstr, &exp->elts[pc2 + 2].string);
+
+ if (overload_resolution && (exp->language_defn->la_language == language_cplus))
+ {
+ /* Language is C++, do some overload resolution before evaluation */
+ struct value *valp = NULL;
- argvec[1] = arg2;
- argvec[0] =
- value_struct_elt (&temp, argvec+1, &exp->elts[pc2 + 1].string,
- &static_memfuncp,
- op == STRUCTOP_STRUCT
- ? "structure" : "structure pointer");
- if (VALUE_OFFSET (temp))
+ /* Prepare list of argument types for overload resolution */
+ arg_types = (struct type **) xmalloc (nargs * (sizeof (struct type *)));
+ for (ix = 1; ix <= nargs; ix++)
+ arg_types[ix - 1] = VALUE_TYPE (argvec[ix]);
+
+ (void) find_overload_match (arg_types, nargs, tstr,
+ 1 /* method */ , 0 /* strict match */ ,
+ arg2 /* the object */ , NULL,
+ &valp, NULL, &static_memfuncp);
+
+
+ argvec[1] = arg2; /* the ``this'' pointer */
+ argvec[0] = valp; /* use the method found after overload resolution */
+ }
+ else
+ /* Non-C++ case -- or no overload resolution */
{
- arg2 = value_from_longest (lookup_pointer_type (VALUE_TYPE (temp)),
- value_as_long (arg2)+VALUE_OFFSET (temp));
- argvec[1] = arg2;
+ temp = arg2;
+ argvec[0] = value_struct_elt (&temp, argvec + 1, tstr,
+ &static_memfuncp,
+ op == STRUCTOP_STRUCT
+ ? "structure" : "structure pointer");
+ argvec[1] = arg2; /* the ``this'' pointer */
}
+
if (static_memfuncp)
{
argvec[1] = argvec[0];
argvec[1] = arg2;
argvec[0] = arg1;
}
+ else if (op == OP_VAR_VALUE)
+ {
+ /* Non-member function being called */
+ /* fn: This can only be done for C++ functions. A C-style function
+ in a C++ program, for instance, does not have the fields that
+ are expected here */
+
+ if (overload_resolution && (exp->language_defn->la_language == language_cplus))
+ {
+ /* Language is C++, do some overload resolution before evaluation */
+ struct symbol *symp;
+
+ /* Prepare list of argument types for overload resolution */
+ arg_types = (struct type **) xmalloc (nargs * (sizeof (struct type *)));
+ for (ix = 1; ix <= nargs; ix++)
+ arg_types[ix - 1] = VALUE_TYPE (argvec[ix]);
+
+ (void) find_overload_match (arg_types, nargs, NULL /* no need for name */ ,
+ 0 /* not method */ , 0 /* strict match */ ,
+ NULL, exp->elts[save_pos1+2].symbol /* the function */ ,
+ NULL, &symp, NULL);
+
+ /* Now fix the expression being evaluated */
+ exp->elts[save_pos1+2].symbol = symp;
+ argvec[0] = evaluate_subexp_with_coercion (exp, &save_pos1, noside);
+ }
+ else
+ {
+ /* Not C++, or no overload resolution allowed */
+ /* nothing to be done; argvec already correctly set up */
+ }
+ }
+ else
+ {
+ /* It is probably a C-style function */
+ /* nothing to be done; argvec already correctly set up */
+ }
+
+ do_call_it:
if (noside == EVAL_SKIP)
goto nosideret;
it won't offer it. */
struct type *ftype =
- TYPE_TARGET_TYPE (VALUE_TYPE (argvec[0]));
+ TYPE_TARGET_TYPE (VALUE_TYPE (argvec[0]));
if (ftype)
return allocate_value (TYPE_TARGET_TYPE (VALUE_TYPE (argvec[0])));
else
error ("Expression of type other than \"Function returning ...\" used as function");
}
+ if (argvec[0] == NULL)
+ error ("Cannot evaluate function -- may be inlined");
return call_function_by_hand (argvec[0], nargs, argvec + 1);
+ /* pai: FIXME save value from call_function_by_hand, then adjust pc by adjust_fn_pc if +ve */
+
+ case OP_F77_UNDETERMINED_ARGLIST:
+
+ /* Remember that in F77, functions, substring ops and
+ array subscript operations cannot be disambiguated
+ at parse time. We have made all array subscript operations,
+ substring operations as well as function calls come here
+ and we now have to discover what the heck this thing actually was.
+ If it is a function, we process just as if we got an OP_FUNCALL. */
+
+ nargs = longest_to_int (exp->elts[pc + 1].longconst);
+ (*pos) += 2;
+
+ /* First determine the type code we are dealing with. */
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ type = check_typedef (VALUE_TYPE (arg1));
+ code = TYPE_CODE (type);
+
+ switch (code)
+ {
+ case TYPE_CODE_ARRAY:
+ goto multi_f77_subscript;
+
+ case TYPE_CODE_STRING:
+ goto op_f77_substr;
+
+ case TYPE_CODE_PTR:
+ case TYPE_CODE_FUNC:
+ /* It's a function call. */
+ /* Allocate arg vector, including space for the function to be
+ called in argvec[0] and a terminating NULL */
+ argvec = (value_ptr *) alloca (sizeof (value_ptr) * (nargs + 2));
+ argvec[0] = arg1;
+ tem = 1;
+ for (; tem <= nargs; tem++)
+ argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside);
+ argvec[tem] = 0; /* signal end of arglist */
+ goto do_call_it;
+
+ default:
+ error ("Cannot perform substring on this type");
+ }
+
+ op_f77_substr:
+ /* We have a substring operation on our hands here,
+ let us get the string we will be dealing with */
+
+ /* Now evaluate the 'from' and 'to' */
+
+ arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
+
+ if (nargs < 2)
+ return value_subscript (arg1, arg2);
+
+ arg3 = evaluate_subexp_with_coercion (exp, pos, noside);
+
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+
+ tem2 = value_as_long (arg2);
+ tem3 = value_as_long (arg3);
+
+ return value_slice (arg1, tem2, tem3 - tem2 + 1);
+
+ case OP_COMPLEX:
+ /* We have a complex number, There should be 2 floating
+ point numbers that compose it */
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+
+ return value_literal_complex (arg1, arg2, builtin_type_f_complex_s16);
case STRUCTOP_STRUCT:
- tem = strlen (&exp->elts[pc + 1].string);
- (*pos) += 2 + ((tem + sizeof (union exp_element))
- / sizeof (union exp_element));
+ tem = longest_to_int (exp->elts[pc + 1].longconst);
+ (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
if (noside == EVAL_AVOID_SIDE_EFFECTS)
return value_zero (lookup_struct_elt_type (VALUE_TYPE (arg1),
- &exp->elts[pc + 1].string,
- 1),
+ &exp->elts[pc + 2].string,
+ 0),
lval_memory);
else
{
- value temp = arg1;
- return value_struct_elt (&temp, (value *)0, &exp->elts[pc + 1].string,
- (int *) 0, "structure");
+ struct value *temp = arg1;
+ return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string,
+ NULL, "structure");
}
case STRUCTOP_PTR:
- tem = strlen (&exp->elts[pc + 1].string);
- (*pos) += 2 + (tem + sizeof (union exp_element)) / sizeof (union exp_element);
+ tem = longest_to_int (exp->elts[pc + 1].longconst);
+ (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
+
+ /* JYG: if print object is on we need to replace the base type
+ with rtti type in order to continue on with successful
+ lookup of member / method only available in the rtti type. */
+ {
+ struct type *type = VALUE_TYPE (arg1);
+ struct type *real_type;
+ int full, top, using_enc;
+
+ if (objectprint && TYPE_TARGET_TYPE(type) &&
+ (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS))
+ {
+ real_type = value_rtti_target_type (arg1, &full, &top, &using_enc);
+ if (real_type)
+ {
+ if (TYPE_CODE (type) == TYPE_CODE_PTR)
+ real_type = lookup_pointer_type (real_type);
+ else
+ real_type = lookup_reference_type (real_type);
+
+ arg1 = value_cast (real_type, arg1);
+ }
+ }
+ }
+
if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return value_zero (lookup_struct_elt_type (TYPE_TARGET_TYPE
- (VALUE_TYPE (arg1)),
- &exp->elts[pc + 1].string,
- 1),
+ return value_zero (lookup_struct_elt_type (VALUE_TYPE (arg1),
+ &exp->elts[pc + 2].string,
+ 0),
lval_memory);
else
{
- value temp = arg1;
- return value_struct_elt (&temp, (value *)0, &exp->elts[pc + 1].string,
- (int *) 0, "structure pointer");
+ struct value *temp = arg1;
+ return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string,
+ NULL, "structure pointer");
}
case STRUCTOP_MEMBER:
arg1 = evaluate_subexp_for_address (exp, pos, noside);
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- if (noside == EVAL_SKIP)
- goto nosideret;
- /* Now, convert these values to an address. */
- if (TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_PTR
- || ((TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg2)))
- != TYPE_CODE_MEMBER)
- && (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg2)))
- != TYPE_CODE_METHOD)))
- error ("non-pointer-to-member value used in pointer-to-member construct");
- arg3 = value_from_longest (
- lookup_pointer_type (TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (VALUE_TYPE (arg2)))),
- value_as_long (arg1) + value_as_long (arg2));
- return value_ind (arg3);
+
+ /* With HP aCC, pointers to methods do not point to the function code */
+ if (hp_som_som_object_present &&
+ (TYPE_CODE (VALUE_TYPE (arg2)) == TYPE_CODE_PTR) &&
+ (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg2))) == TYPE_CODE_METHOD))
+ error ("Pointers to methods not supported with HP aCC"); /* 1997-08-19 */
+
+ mem_offset = value_as_long (arg2);
+ goto handle_pointer_to_member;
case STRUCTOP_MPTR:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+
+ /* With HP aCC, pointers to methods do not point to the function code */
+ if (hp_som_som_object_present &&
+ (TYPE_CODE (VALUE_TYPE (arg2)) == TYPE_CODE_PTR) &&
+ (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg2))) == TYPE_CODE_METHOD))
+ error ("Pointers to methods not supported with HP aCC"); /* 1997-08-19 */
+
+ mem_offset = value_as_long (arg2);
+
+ handle_pointer_to_member:
+ /* HP aCC generates offsets that have bit #29 set; turn it off to get
+ a real offset to the member. */
+ if (hp_som_som_object_present)
+ {
+ if (!mem_offset) /* no bias -> really null */
+ error ("Attempted dereference of null pointer-to-member");
+ mem_offset &= ~0x20000000;
+ }
if (noside == EVAL_SKIP)
goto nosideret;
+ type = check_typedef (VALUE_TYPE (arg2));
+ if (TYPE_CODE (type) != TYPE_CODE_PTR)
+ goto bad_pointer_to_member;
+ type = check_typedef (TYPE_TARGET_TYPE (type));
+ if (TYPE_CODE (type) == TYPE_CODE_METHOD)
+ error ("not implemented: pointer-to-method in pointer-to-member construct");
+ if (TYPE_CODE (type) != TYPE_CODE_MEMBER)
+ goto bad_pointer_to_member;
/* Now, convert these values to an address. */
- if (TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_PTR
- || (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg2))) != TYPE_CODE_MEMBER
- && TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg2))) != TYPE_CODE_METHOD))
- error ("non-pointer-to-member value used in pointer-to-member construct");
- arg3 = value_from_longest (
- lookup_pointer_type (TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (VALUE_TYPE (arg2)))),
- value_as_long (arg1) + value_as_long (arg2));
+ arg1 = value_cast (lookup_pointer_type (TYPE_DOMAIN_TYPE (type)),
+ arg1);
+ arg3 = value_from_pointer (lookup_pointer_type (TYPE_TARGET_TYPE (type)),
+ value_as_long (arg1) + mem_offset);
return value_ind (arg3);
+ bad_pointer_to_member:
+ error ("non-pointer-to-member value used in pointer-to-member construct");
+
+ case BINOP_CONCAT:
+ arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
+ arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ if (binop_user_defined_p (op, arg1, arg2))
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
+ else
+ return value_concat (arg1, arg2);
case BINOP_ASSIGN:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside);
+
+ /* Do special stuff for HP aCC pointers to members */
+ if (hp_som_som_object_present)
+ {
+ /* 1997-08-19 Can't assign HP aCC pointers to methods. No details of
+ the implementation yet; but the pointer appears to point to a code
+ sequence (thunk) in memory -- in any case it is *not* the address
+ of the function as it would be in a naive implementation. */
+ if ((TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_PTR) &&
+ (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg1))) == TYPE_CODE_METHOD))
+ error ("Assignment to pointers to methods not implemented with HP aCC");
+
+ /* HP aCC pointers to data members require a constant bias */
+ if ((TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_PTR) &&
+ (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg1))) == TYPE_CODE_MEMBER))
+ {
+ unsigned int *ptr = (unsigned int *) VALUE_CONTENTS (arg2); /* forces evaluation */
+ *ptr |= 0x20000000; /* set 29th bit */
+ }
+ }
+
if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS)
return arg1;
if (binop_user_defined_p (op, arg1, arg2))
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
else
return value_assign (arg1, arg2);
return arg1;
op = exp->elts[pc + 1].opcode;
if (binop_user_defined_p (op, arg1, arg2))
- return value_x_binop (arg1, arg2, BINOP_ASSIGN_MODIFY, op);
+ return value_x_binop (arg1, arg2, BINOP_ASSIGN_MODIFY, op, noside);
else if (op == BINOP_ADD)
arg2 = value_add (arg1, arg2);
else if (op == BINOP_SUB)
if (noside == EVAL_SKIP)
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
else
return value_add (arg1, arg2);
if (noside == EVAL_SKIP)
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
else
return value_sub (arg1, arg2);
case BINOP_MUL:
case BINOP_DIV:
case BINOP_REM:
+ case BINOP_MOD:
case BINOP_LSH:
case BINOP_RSH:
- case BINOP_LOGAND:
- case BINOP_LOGIOR:
- case BINOP_LOGXOR:
+ case BINOP_BITWISE_AND:
+ case BINOP_BITWISE_IOR:
+ case BINOP_BITWISE_XOR:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
- return value_x_binop (arg1, arg2, op, OP_NULL);
- else
- if (noside == EVAL_AVOID_SIDE_EFFECTS
- && op == BINOP_DIV)
- return value_zero (VALUE_TYPE (arg1), not_lval);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
+ else if (noside == EVAL_AVOID_SIDE_EFFECTS
+ && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD))
+ return value_zero (VALUE_TYPE (arg1), not_lval);
else
return value_binop (arg1, arg2, op);
+ case BINOP_RANGE:
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ error ("':' operator used in invalid context");
+
case BINOP_SUBSCRIPT:
arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
- if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return value_zero (TYPE_TARGET_TYPE (VALUE_TYPE (arg1)),
- VALUE_LVAL (arg1));
-
if (binop_user_defined_p (op, arg1, arg2))
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
else
- return value_subscript (arg1, arg2);
-
- case BINOP_AND:
+ {
+ /* If the user attempts to subscript something that is not an
+ array or pointer type (like a plain int variable for example),
+ then report this as an error. */
+
+ COERCE_REF (arg1);
+ type = check_typedef (VALUE_TYPE (arg1));
+ if (TYPE_CODE (type) != TYPE_CODE_ARRAY
+ && TYPE_CODE (type) != TYPE_CODE_PTR)
+ {
+ if (TYPE_NAME (type))
+ error ("cannot subscript something of type `%s'",
+ TYPE_NAME (type));
+ else
+ error ("cannot subscript requested type");
+ }
+
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
+ else
+ return value_subscript (arg1, arg2);
+ }
+
+ case BINOP_IN:
+ arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
+ arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ return value_in (arg1, arg2);
+
+ case MULTI_SUBSCRIPT:
+ (*pos) += 2;
+ nargs = longest_to_int (exp->elts[pc + 1].longconst);
+ arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
+ while (nargs-- > 0)
+ {
+ arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
+ /* FIXME: EVAL_SKIP handling may not be correct. */
+ if (noside == EVAL_SKIP)
+ {
+ if (nargs > 0)
+ {
+ continue;
+ }
+ else
+ {
+ goto nosideret;
+ }
+ }
+ /* FIXME: EVAL_AVOID_SIDE_EFFECTS handling may not be correct. */
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ {
+ /* If the user attempts to subscript something that has no target
+ type (like a plain int variable for example), then report this
+ as an error. */
+
+ type = TYPE_TARGET_TYPE (check_typedef (VALUE_TYPE (arg1)));
+ if (type != NULL)
+ {
+ arg1 = value_zero (type, VALUE_LVAL (arg1));
+ noside = EVAL_SKIP;
+ continue;
+ }
+ else
+ {
+ error ("cannot subscript something of type `%s'",
+ TYPE_NAME (VALUE_TYPE (arg1)));
+ }
+ }
+
+ if (binop_user_defined_p (op, arg1, arg2))
+ {
+ arg1 = value_x_binop (arg1, arg2, op, OP_NULL, noside);
+ }
+ else
+ {
+ arg1 = value_subscript (arg1, arg2);
+ }
+ }
+ return (arg1);
+
+ multi_f77_subscript:
+ {
+ int subscript_array[MAX_FORTRAN_DIMS + 1]; /* 1-based array of
+ subscripts, max == 7 */
+ int array_size_array[MAX_FORTRAN_DIMS + 1];
+ int ndimensions = 1, i;
+ struct type *tmp_type;
+ int offset_item; /* The array offset where the item lives */
+
+ if (nargs > MAX_FORTRAN_DIMS)
+ error ("Too many subscripts for F77 (%d Max)", MAX_FORTRAN_DIMS);
+
+ tmp_type = check_typedef (VALUE_TYPE (arg1));
+ ndimensions = calc_f77_array_dims (type);
+
+ if (nargs != ndimensions)
+ error ("Wrong number of subscripts");
+
+ /* Now that we know we have a legal array subscript expression
+ let us actually find out where this element exists in the array. */
+
+ offset_item = 0;
+ for (i = 1; i <= nargs; i++)
+ {
+ /* Evaluate each subscript, It must be a legal integer in F77 */
+ arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
+
+ /* Fill in the subscript and array size arrays */
+
+ subscript_array[i] = value_as_long (arg2);
+
+ retcode = f77_get_dynamic_upperbound (tmp_type, &upper);
+ if (retcode == BOUND_FETCH_ERROR)
+ error ("Cannot obtain dynamic upper bound");
+
+ retcode = f77_get_dynamic_lowerbound (tmp_type, &lower);
+ if (retcode == BOUND_FETCH_ERROR)
+ error ("Cannot obtain dynamic lower bound");
+
+ array_size_array[i] = upper - lower + 1;
+
+ /* Zero-normalize subscripts so that offsetting will work. */
+
+ subscript_array[i] -= lower;
+
+ /* If we are at the bottom of a multidimensional
+ array type then keep a ptr to the last ARRAY
+ type around for use when calling value_subscript()
+ below. This is done because we pretend to value_subscript
+ that we actually have a one-dimensional array
+ of base element type that we apply a simple
+ offset to. */
+
+ if (i < nargs)
+ tmp_type = check_typedef (TYPE_TARGET_TYPE (tmp_type));
+ }
+
+ /* Now let us calculate the offset for this item */
+
+ offset_item = subscript_array[ndimensions];
+
+ for (i = ndimensions - 1; i >= 1; i--)
+ offset_item =
+ array_size_array[i] * offset_item + subscript_array[i];
+
+ /* Construct a value node with the value of the offset */
+
+ arg2 = value_from_longest (builtin_type_f_integer, offset_item);
+
+ /* Let us now play a dirty trick: we will take arg1
+ which is a value node pointing to the topmost level
+ of the multidimensional array-set and pretend
+ that it is actually a array of the final element
+ type, this will ensure that value_subscript()
+ returns the correct type value */
+
+ VALUE_TYPE (arg1) = tmp_type;
+ return value_ind (value_add (value_coerce_array (arg1), arg2));
+ }
+
+ case BINOP_LOGICAL_AND:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
{
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
goto nosideret;
}
-
+
oldpos = *pos;
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
*pos = oldpos;
-
- if (binop_user_defined_p (op, arg1, arg2))
+
+ if (binop_user_defined_p (op, arg1, arg2))
{
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
- tem = value_zerop (arg1);
+ tem = value_logical_not (arg1);
arg2 = evaluate_subexp (NULL_TYPE, exp, pos,
(tem ? EVAL_SKIP : noside));
- return value_from_longest (builtin_type_int,
- (LONGEST) (!tem && !value_zerop (arg2)));
+ return value_from_longest (LA_BOOL_TYPE,
+ (LONGEST) (!tem && !value_logical_not (arg2)));
}
- case BINOP_OR:
+ case BINOP_LOGICAL_OR:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
{
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
goto nosideret;
}
-
+
oldpos = *pos;
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
*pos = oldpos;
-
- if (binop_user_defined_p (op, arg1, arg2))
+
+ if (binop_user_defined_p (op, arg1, arg2))
{
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
- tem = value_zerop (arg1);
+ tem = value_logical_not (arg1);
arg2 = evaluate_subexp (NULL_TYPE, exp, pos,
(!tem ? EVAL_SKIP : noside));
- return value_from_longest (builtin_type_int,
- (LONGEST) (!tem || !value_zerop (arg2)));
+ return value_from_longest (LA_BOOL_TYPE,
+ (LONGEST) (!tem || !value_logical_not (arg2)));
}
case BINOP_EQUAL:
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
{
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
tem = value_equal (arg1, arg2);
- return value_from_longest (builtin_type_int, (LONGEST) tem);
+ return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem);
}
case BINOP_NOTEQUAL:
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
{
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
tem = value_equal (arg1, arg2);
- return value_from_longest (builtin_type_int, (LONGEST) ! tem);
+ return value_from_longest (LA_BOOL_TYPE, (LONGEST) ! tem);
}
case BINOP_LESS:
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
{
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
tem = value_less (arg1, arg2);
- return value_from_longest (builtin_type_int, (LONGEST) tem);
+ return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem);
}
case BINOP_GTR:
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
{
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
tem = value_less (arg2, arg1);
- return value_from_longest (builtin_type_int, (LONGEST) tem);
+ return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem);
}
case BINOP_GEQ:
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
{
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
- tem = value_less (arg1, arg2);
- return value_from_longest (builtin_type_int, (LONGEST) ! tem);
+ tem = value_less (arg2, arg1) || value_equal (arg1, arg2);
+ return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem);
}
case BINOP_LEQ:
goto nosideret;
if (binop_user_defined_p (op, arg1, arg2))
{
- return value_x_binop (arg1, arg2, op, OP_NULL);
+ return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
- else
+ else
{
- tem = value_less (arg2, arg1);
- return value_from_longest (builtin_type_int, (LONGEST) ! tem);
+ tem = value_less (arg1, arg2) || value_equal (arg1, arg2);
+ return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem);
}
case BINOP_REPEAT:
arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
- if (TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_INT)
+ type = check_typedef (VALUE_TYPE (arg2));
+ if (TYPE_CODE (type) != TYPE_CODE_INT)
error ("Non-integral right operand for \"@\" operator.");
if (noside == EVAL_AVOID_SIDE_EFFECTS)
- return allocate_repeat_value (VALUE_TYPE (arg1),
- longest_to_int (value_as_long (arg2)));
+ {
+ return allocate_repeat_value (VALUE_TYPE (arg1),
+ longest_to_int (value_as_long (arg2)));
+ }
else
return value_repeat (arg1, longest_to_int (value_as_long (arg2)));
if (noside == EVAL_SKIP)
goto nosideret;
if (unop_user_defined_p (op, arg1))
- return value_x_unop (arg1, op);
+ return value_x_unop (arg1, op, noside);
else
return value_neg (arg1);
- case UNOP_LOGNOT:
+ case UNOP_COMPLEMENT:
/* C++: check for and handle destructor names. */
op = exp->elts[*pos].opcode;
- /* FIXME-tiemann: this is a cop-out. */
- if (op == OP_SCOPE)
- error ("destructor in eval");
-
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
- if (unop_user_defined_p (UNOP_LOGNOT, arg1))
- return value_x_unop (arg1, UNOP_LOGNOT);
+ if (unop_user_defined_p (UNOP_COMPLEMENT, arg1))
+ return value_x_unop (arg1, UNOP_COMPLEMENT, noside);
else
- return value_lognot (arg1);
+ return value_complement (arg1);
- case UNOP_ZEROP:
+ case UNOP_LOGICAL_NOT:
arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
if (unop_user_defined_p (op, arg1))
- return value_x_unop (arg1, op);
+ return value_x_unop (arg1, op, noside);
else
- return value_from_longest (builtin_type_int,
- (LONGEST) value_zerop (arg1));
+ return value_from_longest (LA_BOOL_TYPE,
+ (LONGEST) value_logical_not (arg1));
case UNOP_IND:
if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR)
- expect_type = TYPE_TARGET_TYPE (expect_type);
+ expect_type = TYPE_TARGET_TYPE (check_typedef (expect_type));
arg1 = evaluate_subexp (expect_type, exp, pos, noside);
+ if ((TYPE_TARGET_TYPE (VALUE_TYPE (arg1))) &&
+ ((TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg1))) == TYPE_CODE_METHOD) ||
+ (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (arg1))) == TYPE_CODE_MEMBER)))
+ error ("Attempt to dereference pointer to member without an object");
if (noside == EVAL_SKIP)
goto nosideret;
- if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ if (unop_user_defined_p (op, arg1))
+ return value_x_unop (arg1, op, noside);
+ else if (noside == EVAL_AVOID_SIDE_EFFECTS)
{
- if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_PTR
- || TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_REF
- /* In C you can dereference an array to get the 1st elt. */
- || TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_ARRAY
- )
- return value_zero (TYPE_TARGET_TYPE (VALUE_TYPE (arg1)),
+ type = check_typedef (VALUE_TYPE (arg1));
+ if (TYPE_CODE (type) == TYPE_CODE_PTR
+ || TYPE_CODE (type) == TYPE_CODE_REF
+ /* In C you can dereference an array to get the 1st elt. */
+ || TYPE_CODE (type) == TYPE_CODE_ARRAY
+ )
+ return value_zero (TYPE_TARGET_TYPE (type),
lval_memory);
- else if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_INT)
+ else if (TYPE_CODE (type) == TYPE_CODE_INT)
/* GDB allows dereferencing an int. */
return value_zero (builtin_type_int, lval_memory);
else
case UNOP_ADDR:
/* C++: check for and handle pointer to members. */
-
+
op = exp->elts[*pos].opcode;
if (noside == EVAL_SKIP)
{
if (op == OP_SCOPE)
{
- char *name = &exp->elts[pc+3].string;
- int temm = strlen (name);
- (*pos) += 2 + (temm + sizeof (union exp_element)) / sizeof (union exp_element);
+ int temm = longest_to_int (exp->elts[pc + 3].longconst);
+ (*pos) += 3 + BYTES_TO_EXP_ELEM (temm + 1);
}
else
- evaluate_subexp (expect_type, exp, pos, EVAL_SKIP);
+ evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
goto nosideret;
}
-
- if (op == OP_SCOPE)
+ else
{
- char *name = &exp->elts[pc+3].string;
- int temm = strlen (name);
- struct type *domain = exp->elts[pc+2].type;
- (*pos) += 2 + (temm + sizeof (union exp_element)) / sizeof (union exp_element);
- arg1 = value_struct_elt_for_address (domain, expect_type, name);
- if (arg1)
- return arg1;
- error ("no field `%s' in structure", name);
+ struct value *retvalp = evaluate_subexp_for_address (exp, pos, noside);
+ /* If HP aCC object, use bias for pointers to members */
+ if (hp_som_som_object_present &&
+ (TYPE_CODE (VALUE_TYPE (retvalp)) == TYPE_CODE_PTR) &&
+ (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (retvalp))) == TYPE_CODE_MEMBER))
+ {
+ unsigned int *ptr = (unsigned int *) VALUE_CONTENTS (retvalp); /* forces evaluation */
+ *ptr |= 0x20000000; /* set 29th bit */
+ }
+ return retvalp;
}
- else
- return evaluate_subexp_for_address (exp, pos, noside);
case UNOP_SIZEOF:
if (noside == EVAL_SKIP)
case UNOP_CAST:
(*pos) += 2;
- arg1 = evaluate_subexp (expect_type, exp, pos, noside);
+ type = exp->elts[pc + 1].type;
+ arg1 = evaluate_subexp (type, exp, pos, noside);
if (noside == EVAL_SKIP)
goto nosideret;
- return value_cast (exp->elts[pc + 1].type, arg1);
+ if (type != VALUE_TYPE (arg1))
+ arg1 = value_cast (type, arg1);
+ return arg1;
case UNOP_MEMVAL:
(*pos) += 2;
return value_zero (exp->elts[pc + 1].type, lval_memory);
else
return value_at_lazy (exp->elts[pc + 1].type,
- value_as_pointer (arg1));
+ value_as_address (arg1),
+ NULL);
case UNOP_PREINCREMENT:
arg1 = evaluate_subexp (expect_type, exp, pos, noside);
return arg1;
else if (unop_user_defined_p (op, arg1))
{
- return value_x_unop (arg1, op);
+ return value_x_unop (arg1, op, noside);
}
else
{
- arg2 = value_add (arg1, value_from_longest (builtin_type_char,
- (LONGEST) 1));
+ arg2 = value_add (arg1, value_from_longest (builtin_type_char,
+ (LONGEST) 1));
return value_assign (arg1, arg2);
}
return arg1;
else if (unop_user_defined_p (op, arg1))
{
- return value_x_unop (arg1, op);
+ return value_x_unop (arg1, op, noside);
}
else
{
- arg2 = value_sub (arg1, value_from_longest (builtin_type_char,
- (LONGEST) 1));
+ arg2 = value_sub (arg1, value_from_longest (builtin_type_char,
+ (LONGEST) 1));
return value_assign (arg1, arg2);
}
return arg1;
else if (unop_user_defined_p (op, arg1))
{
- return value_x_unop (arg1, op);
+ return value_x_unop (arg1, op, noside);
}
else
{
- arg2 = value_add (arg1, value_from_longest (builtin_type_char,
- (LONGEST) 1));
+ arg2 = value_add (arg1, value_from_longest (builtin_type_char,
+ (LONGEST) 1));
value_assign (arg1, arg2);
return arg1;
}
return arg1;
else if (unop_user_defined_p (op, arg1))
{
- return value_x_unop (arg1, op);
+ return value_x_unop (arg1, op, noside);
}
else
{
- arg2 = value_sub (arg1, value_from_longest (builtin_type_char,
- (LONGEST) 1));
+ arg2 = value_sub (arg1, value_from_longest (builtin_type_char,
+ (LONGEST) 1));
value_assign (arg1, arg2);
return arg1;
}
-
+
case OP_THIS:
(*pos) += 1;
return value_of_this (1);
+ case OP_TYPE:
+ error ("Attempt to use a type name as an expression");
+
default:
- error ("internal error: I do not know how to evaluate what you gave me");
+ /* Removing this case and compiling with gcc -Wall reveals that
+ a lot of cases are hitting this case. Some of these should
+ probably be removed from expression.h; others are legitimate
+ expressions which are (apparently) not fully implemented.
+
+ If there are any cases landing here which mean a user error,
+ then they should be separate cases, with more descriptive
+ error messages. */
+
+ error ("\
+GDB does not (yet) know how to evaluate that kind of expression");
}
- nosideret:
+nosideret:
return value_from_longest (builtin_type_long, (LONGEST) 1);
}
\f
NOSIDE may be EVAL_AVOID_SIDE_EFFECTS;
then only the type of the result need be correct. */
-static value
-evaluate_subexp_for_address (exp, pos, noside)
- register struct expression *exp;
- register int *pos;
- enum noside noside;
+static struct value *
+evaluate_subexp_for_address (register struct expression *exp, register int *pos,
+ enum noside noside)
{
enum exp_opcode op;
register int pc;
evaluate_subexp (NULL_TYPE, exp, pos, noside));
case OP_VAR_VALUE:
- var = exp->elts[pc + 1].symbol;
+ var = exp->elts[pc + 2].symbol;
/* C++: The "address" of a reference should yield the address
* of the object pointed to. Let value_addr() deal with it. */
if (TYPE_CODE (SYMBOL_TYPE (var)) == TYPE_CODE_REF)
- goto default_case;
+ goto default_case;
- (*pos) += 3;
+ (*pos) += 4;
if (noside == EVAL_AVOID_SIDE_EFFECTS)
{
struct type *type =
- lookup_pointer_type (SYMBOL_TYPE (var));
+ lookup_pointer_type (SYMBOL_TYPE (var));
enum address_class sym_class = SYMBOL_CLASS (var);
if (sym_class == LOC_CONST
|| sym_class == LOC_REGPARM)
error ("Attempt to take address of register or constant.");
- return
- value_zero (type, not_lval);
+ return
+ value_zero (type, not_lval);
}
else
- return locate_var_value (var, (FRAME) 0);
+ return
+ locate_var_value
+ (var,
+ block_innermost_frame (exp->elts[pc + 1].block));
default:
default_case:
if (noside == EVAL_AVOID_SIDE_EFFECTS)
{
- value x = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ struct value *x = evaluate_subexp (NULL_TYPE, exp, pos, noside);
if (VALUE_LVAL (x) == lval_memory)
return value_zero (lookup_pointer_type (VALUE_TYPE (x)),
not_lval);
}
/* Evaluate like `evaluate_subexp' except coercing arrays to pointers.
- When used in contexts where arrays will be coerced anyway,
- this is equivalent to `evaluate_subexp'
- but much faster because it avoids actually fetching array contents. */
-
-static value
-evaluate_subexp_with_coercion (exp, pos, noside)
- register struct expression *exp;
- register int *pos;
- enum noside noside;
+ When used in contexts where arrays will be coerced anyway, this is
+ equivalent to `evaluate_subexp' but much faster because it avoids
+ actually fetching array contents (perhaps obsolete now that we have
+ VALUE_LAZY).
+
+ Note that we currently only do the coercion for C expressions, where
+ arrays are zero based and the coercion is correct. For other languages,
+ with nonzero based arrays, coercion loses. Use CAST_IS_CONVERSION
+ to decide if coercion is appropriate.
+
+ */
+
+struct value *
+evaluate_subexp_with_coercion (register struct expression *exp,
+ register int *pos, enum noside noside)
{
register enum exp_opcode op;
register int pc;
- register value val;
+ struct value *val;
struct symbol *var;
pc = (*pos);
switch (op)
{
case OP_VAR_VALUE:
- var = exp->elts[pc + 1].symbol;
- if (TYPE_CODE (SYMBOL_TYPE (var)) == TYPE_CODE_ARRAY)
+ var = exp->elts[pc + 2].symbol;
+ if (TYPE_CODE (check_typedef (SYMBOL_TYPE (var))) == TYPE_CODE_ARRAY
+ && CAST_IS_CONVERSION)
{
- (*pos) += 3;
- val = locate_var_value (var, (FRAME) 0);
- return value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (SYMBOL_TYPE (var))),
+ (*pos) += 4;
+ val =
+ locate_var_value
+ (var, block_innermost_frame (exp->elts[pc + 1].block));
+ return value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (check_typedef (SYMBOL_TYPE (var)))),
val);
}
- default:
- return evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ /* FALLTHROUGH */
+
+ default:
+ return evaluate_subexp (NULL_TYPE, exp, pos, noside);
}
}
and return a value for the size of that subexpression.
Advance *POS over the subexpression. */
-static value
-evaluate_subexp_for_sizeof (exp, pos)
- register struct expression *exp;
- register int *pos;
+static struct value *
+evaluate_subexp_for_sizeof (register struct expression *exp, register int *pos)
{
enum exp_opcode op;
register int pc;
- value val;
+ struct type *type;
+ struct value *val;
pc = (*pos);
op = exp->elts[pc].opcode;
switch (op)
{
/* This case is handled specially
- so that we avoid creating a value for the result type.
- If the result type is very big, it's desirable not to
- create a value unnecessarily. */
+ so that we avoid creating a value for the result type.
+ If the result type is very big, it's desirable not to
+ create a value unnecessarily. */
case UNOP_IND:
(*pos)++;
val = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ type = check_typedef (VALUE_TYPE (val));
+ if (TYPE_CODE (type) != TYPE_CODE_PTR
+ && TYPE_CODE (type) != TYPE_CODE_REF
+ && TYPE_CODE (type) != TYPE_CODE_ARRAY)
+ error ("Attempt to take contents of a non-pointer value.");
+ type = check_typedef (TYPE_TARGET_TYPE (type));
return value_from_longest (builtin_type_int, (LONGEST)
- TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (val))));
+ TYPE_LENGTH (type));
case UNOP_MEMVAL:
(*pos) += 3;
- return value_from_longest (builtin_type_int,
- (LONGEST) TYPE_LENGTH (exp->elts[pc + 1].type));
+ type = check_typedef (exp->elts[pc + 1].type);
+ return value_from_longest (builtin_type_int,
+ (LONGEST) TYPE_LENGTH (type));
case OP_VAR_VALUE:
- (*pos) += 3;
- return value_from_longest (builtin_type_int,
- (LONGEST) TYPE_LENGTH (SYMBOL_TYPE (exp->elts[pc + 1].symbol)));
+ (*pos) += 4;
+ type = check_typedef (SYMBOL_TYPE (exp->elts[pc + 2].symbol));
+ return
+ value_from_longest (builtin_type_int, (LONGEST) TYPE_LENGTH (type));
default:
val = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
return value_from_longest (builtin_type_int,
- (LONGEST) TYPE_LENGTH (VALUE_TYPE (val)));
+ (LONGEST) TYPE_LENGTH (VALUE_TYPE (val)));
}
}
/* Parse a type expression in the string [P..P+LENGTH). */
struct type *
-parse_and_eval_type (p, length)
- char *p;
- int length;
+parse_and_eval_type (char *p, int length)
{
- char *tmp = (char *)alloca (length + 4);
- struct expression *expr;
- tmp[0] = '(';
- bcopy (p, tmp+1, length);
- tmp[length+1] = ')';
- tmp[length+2] = '0';
- tmp[length+3] = '\0';
- expr = parse_expression (tmp);
- if (expr->elts[0].opcode != UNOP_CAST)
- error ("Internal error in eval_type.");
- return expr->elts[1].type;
+ char *tmp = (char *) alloca (length + 4);
+ struct expression *expr;
+ tmp[0] = '(';
+ memcpy (tmp + 1, p, length);
+ tmp[length + 1] = ')';
+ tmp[length + 2] = '0';
+ tmp[length + 3] = '\0';
+ expr = parse_expression (tmp);
+ if (expr->elts[0].opcode != UNOP_CAST)
+ error ("Internal error in eval_type.");
+ return expr->elts[1].type;
+}
+
+int
+calc_f77_array_dims (struct type *array_type)
+{
+ int ndimen = 1;
+ struct type *tmp_type;
+
+ if ((TYPE_CODE (array_type) != TYPE_CODE_ARRAY))
+ error ("Can't get dimensions for a non-array type");
+
+ tmp_type = array_type;
+
+ while ((tmp_type = TYPE_TARGET_TYPE (tmp_type)))
+ {
+ if (TYPE_CODE (tmp_type) == TYPE_CODE_ARRAY)
+ ++ndimen;
+ }
+ return ndimen;
}
projects / deliverable / binutils-gdb.git / blobdiff