1 /* Call module for 'compile' command. 2 3 Copyright (C) 2014-2015 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 #include "defs.h" 21 #include "compile-object-run.h" 22 #include "value.h" 23 #include "infcall.h" 24 #include "objfiles.h" 25 #include "compile-internal.h" 26 #include "dummy-frame.h" 27 28 /* Helper for do_module_cleanup. */ 29 30 struct do_module_cleanup 31 { 32 /* Boolean to set true upon a call of do_module_cleanup. 33 The pointer may be NULL. */ 34 int *executedp; 35 36 /* .c file OBJFILE was built from. It needs to be xfree-d. */ 37 char *source_file; 38 39 /* objfile_name of our objfile. */ 40 char objfile_name_string[1]; 41 }; 42 43 /* Cleanup everything after the inferior function dummy frame gets 44 discarded. */ 45 46 static dummy_frame_dtor_ftype do_module_cleanup; 47 static void 48 do_module_cleanup (void *arg) 49 { 50 struct do_module_cleanup *data = arg; 51 struct objfile *objfile; 52 53 if (data->executedp != NULL) 54 *data->executedp = 1; 55 56 ALL_OBJFILES (objfile) 57 if ((objfile->flags & OBJF_USERLOADED) == 0 58 && (strcmp (objfile_name (objfile), data->objfile_name_string) == 0)) 59 { 60 free_objfile (objfile); 61 62 /* It may be a bit too pervasive in this dummy_frame dtor callback. */ 63 clear_symtab_users (0); 64 65 break; 66 } 67 68 /* Delete the .c file. */ 69 unlink (data->source_file); 70 xfree (data->source_file); 71 72 /* Delete the .o file. */ 73 unlink (data->objfile_name_string); 74 xfree (data); 75 } 76 77 /* Perform inferior call of MODULE. This function may throw an error. 78 This function may leave files referenced by MODULE on disk until 79 the inferior call dummy frame is discarded. This function may throw errors. 80 Thrown errors and left MODULE files are unrelated events. Caller must no 81 longer touch MODULE's memory after this function has been called. */ 82 83 void 84 compile_object_run (struct compile_module *module) 85 { 86 struct value *func_val; 87 struct frame_id dummy_id; 88 struct cleanup *cleanups; 89 struct do_module_cleanup *data; 90 volatile struct gdb_exception ex; 91 const char *objfile_name_s = objfile_name (module->objfile); 92 int dtor_found, executed = 0; 93 CORE_ADDR func_addr = module->func_addr; 94 CORE_ADDR regs_addr = module->regs_addr; 95 96 data = xmalloc (sizeof (*data) + strlen (objfile_name_s)); 97 data->executedp = &executed; 98 data->source_file = xstrdup (module->source_file); 99 strcpy (data->objfile_name_string, objfile_name_s); 100 101 xfree (module->source_file); 102 xfree (module); 103 104 TRY_CATCH (ex, RETURN_MASK_ERROR) 105 { 106 func_val = value_from_pointer 107 (builtin_type (target_gdbarch ())->builtin_func_ptr, 108 func_addr); 109 110 if (regs_addr == 0) 111 call_function_by_hand_dummy (func_val, 0, NULL, 112 do_module_cleanup, data); 113 else 114 { 115 struct value *arg_val; 116 117 arg_val = value_from_pointer 118 (builtin_type (target_gdbarch ())->builtin_func_ptr, 119 regs_addr); 120 call_function_by_hand_dummy (func_val, 1, &arg_val, 121 do_module_cleanup, data); 122 } 123 } 124 dtor_found = find_dummy_frame_dtor (do_module_cleanup, data); 125 if (!executed) 126 data->executedp = NULL; 127 if (ex.reason >= 0) 128 gdb_assert (!dtor_found && executed); 129 else 130 { 131 /* In the case od DTOR_FOUND or in the case of EXECUTED nothing 132 needs to be done. */ 133 gdb_assert (!(dtor_found && executed)); 134 if (!dtor_found && !executed) 135 do_module_cleanup (data); 136 throw_exception (ex); 137 } 138 } 139