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/* 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;

}