gdb/infcall.h

   1 /* Perform an inferior function call, for GDB, the GNU debugger.
   2
   3    Copyright (C) 2003-2018 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef INFCALL_H
  21 #define INFCALL_H
  22
  23 #include "dummy-frame.h"
  24
  25 struct value;
  26 struct type;
  27
  28 /* Determine a function's address and its return type from its value.
  29    If the function is a GNU ifunc, then return the address of the
  30    target function, and set *FUNCTION_TYPE to the target function's
  31    type, and *RETVAL_TYPE to the target function's return type.
  32    Calls error() if the function is not valid for calling.  */
  33
  34 extern CORE_ADDR find_function_addr (struct value *function,
  35                                      struct type **retval_type,
  36                                      struct type **function_type = NULL);
  37
  38 /* Perform a function call in the inferior.
  39
  40    ARGS is a vector of values of arguments (NARGS of them).  FUNCTION
  41    is a value, the function to be called.  Returns a value
  42    representing what the function returned.  May fail to return, if a
  43    breakpoint or signal is hit during the execution of the function.
  44
  45    DFEAULT_RETURN_TYPE is used as function return type if the return
  46    type is unknown.  This is used when calling functions with no debug
  47    info.
  48
  49    ARGS is modified to contain coerced values.  */
  50
  51 extern struct value *call_function_by_hand (struct value *function,
  52                                             type *default_return_type,
  53                                             int nargs,
  54                                             struct value **args);
  55
  56 /* Similar to call_function_by_hand and additional call
  57    register_dummy_frame_dtor with DUMMY_DTOR and DUMMY_DTOR_DATA for the
  58    created inferior call dummy frame.  */
  59
  60 extern struct value *
  61   call_function_by_hand_dummy (struct value *function,
  62                                type *default_return_type,
  63                                int nargs,
  64                                struct value **args,
  65                                dummy_frame_dtor_ftype *dummy_dtor,
  66                                void *dummy_dtor_data);
  67
  68 /* Throw an error indicating that the user tried to call a function
  69    that has unknown return type.  FUNC_NAME is the name of the
  70    function to be included in the error message; may be NULL, in which
  71    case the error message doesn't include a function name.  */
  72
  73 extern void error_call_unknown_return_type (const char *func_name);
  74
  75 #endif