binutils-gdb/gdb/wrapper.c

334 lines
7.9 KiB
C

/* Longjump free calls to gdb internal routines.
Copyright 1999, 2000 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 "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];
};
struct captured_value_struct_elt_args
{
struct value **argp;
struct value **args;
char *name;
int *static_memfuncp;
char *err;
struct value **result_ptr;
};
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 do_captured_value_struct_elt (struct ui_out *uiout, void *data);
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, struct value **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 = (struct value *) 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 (struct value *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 ((struct value *) (args)->args[0].pointer);
return 1;
}
int
gdb_value_equal (struct value *val1, struct value *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;
struct value *val1;
struct value *val2;
val1 = (struct value *) (args)->args[0].pointer;
val2 = (struct value *) (args)->args[1].pointer;
(args)->result.integer = value_equal (val1, val2);
return 1;
}
int
gdb_value_assign (struct value *val1, struct value *val2, struct value **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 = (struct value *) args.result.pointer;
return 1;
}
static int
wrap_value_assign (char *a)
{
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
struct value *val1;
struct value *val2;
val1 = (struct value *) (args)->args[0].pointer;
val2 = (struct value *) (args)->args[1].pointer;
(args)->result.pointer = value_assign (val1, val2);
return 1;
}
int
gdb_value_subscript (struct value *val1, struct value *val2, struct value **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 = (struct value *) args.result.pointer;
return 1;
}
static int
wrap_value_subscript (char *a)
{
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
struct value *val1;
struct value *val2;
val1 = (struct value *) (args)->args[0].pointer;
val2 = (struct value *) (args)->args[1].pointer;
(args)->result.pointer = value_subscript (val1, val2);
return 1;
}
int
gdb_value_ind (struct value *val, struct value **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 = (struct value *) args.result.pointer;
return 1;
}
static int
wrap_value_ind (char *opaque_arg)
{
struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) opaque_arg;
struct value *val;
val = (struct value *) (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;
}
enum gdb_rc
gdb_value_struct_elt (struct ui_out *uiout, struct value **result, struct value **argp,
struct value **args, char *name, int *static_memfuncp,
char *err)
{
struct captured_value_struct_elt_args cargs;
cargs.argp = argp;
cargs.args = args;
cargs.name = name;
cargs.static_memfuncp = static_memfuncp;
cargs.err = err;
cargs.result_ptr = result;
return catch_exceptions (uiout, do_captured_value_struct_elt, &cargs,
NULL, RETURN_MASK_ALL);
}
static int
do_captured_value_struct_elt (struct ui_out *uiout, void *data)
{
struct captured_value_struct_elt_args *cargs = data;
*cargs->result_ptr = value_struct_elt (cargs->argp, cargs->args, cargs->name,
cargs->static_memfuncp, cargs->err);
return GDB_RC_OK;
}