GPLv2 release

[centaur.git] / include / libelfu / generic.h

diff --git a/include/libelfu/generic.h b/include/libelfu/generic.h
index 9d9aefb0249e8636d04d340fd69478cb114bf0f0..67e1bc66ba7bd572e68b55ea3ef7bfae7cd03c47 100644 (file)
--- a/include/libelfu/generic.h
+++ b/include/libelfu/generic.h
@@ -1,9 +1,62 @@
+/* This file is part of centaur.
+ *
+ * centaur is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License 2 as
+ * published by the Free Software Foundation.
+
+ * centaur 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 centaur.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef __LIBELFU_GENERIC_H__
 #define __LIBELFU_GENERIC_H__
 
 #include <gelf.h>
 
 
-size_t elfu_gScnSizeFile(const GElf_Shdr *shdr);
+#ifndef MIN
+  #define MIN(x, y) ((x) < (y) ? (x) : (y))
+#endif
+
+#ifndef MAX
+  #define MAX(x, y) ((x) > (y) ? (x) : (y))
+#endif
+
+#ifndef ROUNDUP
+  #define ROUNDUP(x, align) ((x) + ((align) - ((x) % (align))) % (align))
+#endif
+
+
+#define OFFS_END(off, sz) ((off) + (sz))
+
+#define OVERLAPPING(off1, sz1, off2, sz2) \
+  (!((off1) == (off2) && ((sz1 == 0) || (sz2 == 0))) \
+   && (((off1) <= (off2) && (off2) < OFFS_END((off1), (sz1))) \
+       || ((off2) <= (off1) && (off1) < OFFS_END((off2), (sz2)))) \
+  )
+
+#define FULLY_OVERLAPPING(off1, sz1, off2, sz2) \
+  (((off1) <= (off2) && OFFS_END((off2), (sz2)) <= OFFS_END((off1), (sz1))) \
+   || ((off2) <= (off1) && OFFS_END((off1), (sz1)) <= OFFS_END((off2), (sz2))))
+
+
+
+#define SCNFILESIZE(shdr) ((shdr)->sh_type == SHT_NOBITS ? 0 : (shdr)->sh_size)
+
+
+
+#define PHDR_CONTAINS_SCN_IN_MEMORY(phdr, shdr) \
+  (((phdr)->p_vaddr) <= ((shdr)->sh_addr) \
+   && OFFS_END((shdr)->sh_addr, (shdr)->sh_size) <= OFFS_END((phdr)->p_vaddr, (phdr)->p_memsz))
+
+#define PHDR_CONTAINS_SCN_IN_FILE(phdr, shdr) \
+  (((phdr)->p_offset) <= ((shdr)->sh_offset) \
+   && OFFS_END((shdr)->sh_offset, SCNFILESIZE(shdr)) <= OFFS_END((phdr)->p_offset, (phdr)->p_filesz))
+
 
 #endif