8a1a01128d
* wrapper.c (gdb_value_assign): New function. Longjump-free
version of value_assign.
(wrap_value_assign): New function. Wrapper for value_assign.
* wrapper.h: Add declaration for the above.
* varobj.c (varobj_set_value): Use gdb_value_assign, not
value_assign which can longjump. Do not change varobj value if
assign fails.
297 lines
6.7 KiB
C
297 lines
6.7 KiB
C
/* Longjump free calls to gdb internal routines.
|
|
Copyright 1999 Free Software Foundation, Inc.
|
|
|
|
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. */
|
|
|
|
#include "defs.h"
|
|
#include "value.h"
|
|
#include "frame.h"
|
|
#include "wrapper.h"
|
|
|
|
/* Use this struct to pass arguments to wrapper routines. We assume
|
|
(arbitrarily) that no gdb function takes more than ten arguments. */
|
|
struct gdb_wrapper_arguments
|
|
{
|
|
|
|
/* Pointer to some result from the gdb function call, if any */
|
|
union wrapper_results
|
|
{
|
|
int integer;
|
|
void *pointer;
|
|
} result;
|
|
|
|
|
|
/* The list of arguments. */
|
|
union wrapper_args
|
|
{
|
|
int integer;
|
|
void *pointer;
|
|
} args[10];
|
|
};
|
|
|
|
static int wrap_parse_exp_1 (char *);
|
|
|
|
static int wrap_evaluate_expression (char *);
|
|
|
|
static int wrap_value_fetch_lazy (char *);
|
|
|
|
static int wrap_value_equal (char *);
|
|
|
|
static int wrap_value_assign (char *);
|
|
|
|
static int wrap_value_subscript (char *);
|
|
|
|
static int wrap_value_ind (char *opaque_arg);
|
|
|
|
static int wrap_parse_and_eval_type (char *);
|
|
|
|
int
|
|
gdb_parse_exp_1 (char **stringptr, struct block *block, int comma,
|
|
struct expression **expression)
|
|
{
|
|
struct gdb_wrapper_arguments args;
|
|
args.args[0].pointer = stringptr;
|
|
args.args[1].pointer = block;
|
|
args.args[2].integer = comma;
|
|
|
|
if (!catch_errors ((catch_errors_ftype *) wrap_parse_exp_1, &args,
|
|
"", RETURN_MASK_ERROR))
|
|
{
|
|
/* An error occurred */
|
|
return 0;
|
|
}
|
|
|
|
*expression = (struct expression *) args.result.pointer;
|
|
return 1;
|
|
|
|
}
|
|
|
|
static int
|
|
wrap_parse_exp_1 (char *argptr)
|
|
{
|
|
struct gdb_wrapper_arguments *args
|
|
= (struct gdb_wrapper_arguments *) argptr;
|
|
args->result.pointer = parse_exp_1((char **) args->args[0].pointer,
|
|
(struct block *) args->args[1].pointer,
|
|
args->args[2].integer);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
gdb_evaluate_expression (struct expression *exp, value_ptr *value)
|
|
{
|
|
struct gdb_wrapper_arguments args;
|
|
args.args[0].pointer = exp;
|
|
|
|
if (!catch_errors ((catch_errors_ftype *) wrap_evaluate_expression, &args,
|
|
"", RETURN_MASK_ERROR))
|
|
{
|
|
/* An error occurred */
|
|
return 0;
|
|
}
|
|
|
|
*value = (value_ptr) args.result.pointer;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
wrap_evaluate_expression (char *a)
|
|
{
|
|
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
|
|
|
|
(args)->result.pointer =
|
|
(char *) evaluate_expression ((struct expression *) args->args[0].pointer);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
gdb_value_fetch_lazy (value_ptr value)
|
|
{
|
|
struct gdb_wrapper_arguments args;
|
|
|
|
args.args[0].pointer = value;
|
|
return catch_errors ((catch_errors_ftype *) wrap_value_fetch_lazy, &args,
|
|
"", RETURN_MASK_ERROR);
|
|
}
|
|
|
|
static int
|
|
wrap_value_fetch_lazy (char *a)
|
|
{
|
|
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
|
|
|
|
value_fetch_lazy ((value_ptr) (args)->args[0].pointer);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
gdb_value_equal (value_ptr val1, value_ptr val2, int *result)
|
|
{
|
|
struct gdb_wrapper_arguments args;
|
|
|
|
args.args[0].pointer = val1;
|
|
args.args[1].pointer = val2;
|
|
|
|
if (!catch_errors ((catch_errors_ftype *) wrap_value_equal, &args,
|
|
"", RETURN_MASK_ERROR))
|
|
{
|
|
/* An error occurred */
|
|
return 0;
|
|
}
|
|
|
|
*result = args.result.integer;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
wrap_value_equal (char *a)
|
|
{
|
|
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
|
|
value_ptr val1, val2;
|
|
|
|
val1 = (value_ptr) (args)->args[0].pointer;
|
|
val2 = (value_ptr) (args)->args[1].pointer;
|
|
|
|
(args)->result.integer = value_equal (val1, val2);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
gdb_value_assign (val1, val2, result)
|
|
value_ptr val1;
|
|
value_ptr val2;
|
|
value_ptr *result;
|
|
{
|
|
struct gdb_wrapper_arguments args;
|
|
|
|
args.args[0].pointer = val1;
|
|
args.args[1].pointer = val2;
|
|
|
|
if (!catch_errors ((catch_errors_ftype *) wrap_value_assign, &args,
|
|
"", RETURN_MASK_ERROR))
|
|
{
|
|
/* An error occurred */
|
|
return 0;
|
|
}
|
|
|
|
*result = (value_ptr) args.result.pointer;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
wrap_value_assign (a)
|
|
char *a;
|
|
{
|
|
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
|
|
value_ptr val1, val2;
|
|
|
|
val1 = (value_ptr) (args)->args[0].pointer;
|
|
val2 = (value_ptr) (args)->args[1].pointer;
|
|
|
|
(args)->result.pointer = value_assign (val1, val2);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
gdb_value_subscript (value_ptr val1, value_ptr val2, value_ptr *rval)
|
|
{
|
|
struct gdb_wrapper_arguments args;
|
|
|
|
args.args[0].pointer = val1;
|
|
args.args[1].pointer = val2;
|
|
|
|
if (!catch_errors ((catch_errors_ftype *) wrap_value_subscript, &args,
|
|
"", RETURN_MASK_ERROR))
|
|
{
|
|
/* An error occurred */
|
|
return 0;
|
|
}
|
|
|
|
*rval = (value_ptr) args.result.pointer;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
wrap_value_subscript (char *a)
|
|
{
|
|
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
|
|
value_ptr val1, val2;
|
|
|
|
val1 = (value_ptr) (args)->args[0].pointer;
|
|
val2 = (value_ptr) (args)->args[1].pointer;
|
|
|
|
(args)->result.pointer = value_subscript (val1, val2);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
gdb_value_ind (value_ptr val, value_ptr *rval)
|
|
{
|
|
struct gdb_wrapper_arguments args;
|
|
|
|
args.args[0].pointer = val;
|
|
|
|
if (!catch_errors ((catch_errors_ftype *) wrap_value_ind, &args,
|
|
"", RETURN_MASK_ERROR))
|
|
{
|
|
/* An error occurred */
|
|
return 0;
|
|
}
|
|
|
|
*rval = (value_ptr) args.result.pointer;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
wrap_value_ind (char *opaque_arg)
|
|
{
|
|
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) opaque_arg;
|
|
value_ptr val;
|
|
|
|
val = (value_ptr) (args)->args[0].pointer;
|
|
(args)->result.pointer = value_ind (val);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
gdb_parse_and_eval_type (char *p, int length, struct type **type)
|
|
{
|
|
struct gdb_wrapper_arguments args;
|
|
args.args[0].pointer = p;
|
|
args.args[1].integer = length;
|
|
|
|
if (!catch_errors ((catch_errors_ftype *) wrap_parse_and_eval_type, &args,
|
|
"", RETURN_MASK_ALL))
|
|
{
|
|
/* An error occurred */
|
|
return 0;
|
|
}
|
|
|
|
*type = (struct type *) args.result.pointer;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
wrap_parse_and_eval_type (char *a)
|
|
{
|
|
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
|
|
|
|
char *p = (char *) args->args[0].pointer;
|
|
int length = args->args[1].integer;
|
|
|
|
args->result.pointer = (char *) parse_and_eval_type (p, length);
|
|
|
|
return 1;
|
|
}
|