1 files changed, 3 insertions, 0 deletions
diff --git a/tcc.h b/tcc.h
index ed0afaa..c7d6dd5 100644
--- a/tcc.h
+++ b/tcc.h
@@ -1325,6 +1325,9 @@ ST_FUNC void tccelf_new(TCCState *s);
 ST_FUNC void tccelf_delete(TCCState *s);
 ST_FUNC void tccelf_stab_new(TCCState *s);
 
+/* return offset of 'ptr' from start of section 'sec' */
+#define OFFSET_FROM_SECTION_START(sec, ptr) ((size_t)ptr - (size_t)sec->data)
+
 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags);
 ST_FUNC void section_realloc(Section *sec, unsigned long new_size);
 ST_FUNC void *section_ptr_add(Section *sec, addr_t size);