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-rw-r--r--sysdeps/generic/ldsodefs.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index e29e9d7ff0..3cac4fa362 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -66,14 +66,20 @@ __BEGIN_DECLS
/* Result of the lookup functions and how to retrieve the base address. */
typedef struct link_map *lookup_t;
#define LOOKUP_VALUE(map) map
-#define LOOKUP_VALUE_ADDRESS(map) ((map) ? (map)->l_addr : 0)
+#define LOOKUP_VALUE_ADDRESS(map, set) ((set) || (map) ? (map)->l_addr : 0)
+
+/* Calculate the address of symbol REF using the base address from map MAP,
+ if non-NULL. Don't check for NULL map if MAP_SET is TRUE. */
+#define SYMBOL_ADDRESS(map, ref, map_set) \
+ ((ref) == NULL ? 0 \
+ : LOOKUP_VALUE_ADDRESS (map, map_set) + (ref)->st_value)
/* On some architectures a pointer to a function is not just a pointer
to the actual code of the function but rather an architecture
specific descriptor. */
#ifndef ELF_FUNCTION_PTR_IS_SPECIAL
# define DL_SYMBOL_ADDRESS(map, ref) \
- (void *) (LOOKUP_VALUE_ADDRESS (map) + ref->st_value)
+ (void *) SYMBOL_ADDRESS (map, ref, false)
# define DL_LOOKUP_ADDRESS(addr) ((ElfW(Addr)) (addr))
# define DL_CALL_DT_INIT(map, start, argc, argv, env) \
((init_t) (start)) (argc, argv, env)