diff options
Diffstat (limited to 'src/glibext')
| -rw-r--r-- | src/glibext/Makefile.am | 1 | ||||
| -rw-r--r-- | src/glibext/objhole.h | 71 |
2 files changed, 72 insertions, 0 deletions
diff --git a/src/glibext/Makefile.am b/src/glibext/Makefile.am index 127f60c..af4f876 100644 --- a/src/glibext/Makefile.am +++ b/src/glibext/Makefile.am @@ -25,6 +25,7 @@ libglibext_la_SOURCES = \ linegen-int.h \ linegen.h linegen.c \ linesegment.h linesegment.c \ + objhole.h \ proto.h \ seq.h seq.c \ signal.h signal.c diff --git a/src/glibext/objhole.h b/src/glibext/objhole.h new file mode 100644 index 0000000..184e599 --- /dev/null +++ b/src/glibext/objhole.h @@ -0,0 +1,71 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * objhole.h - prototypes pour l'utilisation d'un espace inutilisé dans la structure GObject + * + * Copyright (C) 2019 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * Chrysalide 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 3 of the License, or + * (at your option) any later version. + * + * Chrysalide 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 Chrysalide. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _GLIBEXT_OBJHOLE_H +#define _GLIBEXT_OBJHOLE_H + + +#include <glib-object.h> + + +#include "../common/cpp.h" + + + +/** + * Une structure GObject a la définition suivante : + * + * struct _GObject + * { + * GTypeInstance g_type_instance; + * volatile guint ref_count; + * GData *qdata; + * }; + * + * L'espace entre les deux derniers champs est exploité ici. + */ + + +#define INIT_GOBJECT_EXTRA(obj) \ + do \ + { \ + guint *___space; \ + ___space = (((guint *)&obj->ref_count) + 1); \ + BUILD_BUG_ON((___space + 1) == (guint *)&obj->qdata); \ + *___space = 0; \ + } \ + while (0) + + +#define GET_GOBJECT_EXTRA(obj, tp) \ + ({ \ + BUILD_BUG_ON(sizeof(tp) > sizeof(guint)); \ + tp *___result; \ + ___result = (tp *)(((guint *)&obj->ref_count) + 1); \ + BUILD_BUG_ON((___result + 1) == (tp *)&obj->qdata); \ + ___result; \ + }) + + + +#endif /* _GLIBEXT_OBJHOLE_H */ |