diff --git a/libexec/rtld-elf/rtld.c b/libexec/rtld-elf/rtld.c
index cd8385d1d74d..62ca650116a3 100644
--- a/libexec/rtld-elf/rtld.c
+++ b/libexec/rtld-elf/rtld.c
@@ -162,6 +162,9 @@ static Elf_Sym sym_zero;	/* For resolving undefined weak refs. */
 
 extern Elf_Dyn _DYNAMIC;
 #pragma weak _DYNAMIC
+#ifndef RTLD_IS_DYNAMIC
+#define	RTLD_IS_DYNAMIC()	(&_DYNAMIC != NULL)
+#endif
 
 /*
  * These are the functions the dynamic linker exports to application
@@ -1008,7 +1011,7 @@ init_rtld(caddr_t mapbase)
 #ifdef PIC
     objtmp.relocbase = mapbase;
 #endif
-    if (&_DYNAMIC != 0) {
+    if (RTLD_IS_DYNAMIC()) {
 	objtmp.dynamic = rtld_dynamic(&objtmp);
 	digest_dynamic(&objtmp, 1);
 	assert(objtmp.needed == NULL);
diff --git a/libexec/rtld-elf/sparc64/rtld_machdep.h b/libexec/rtld-elf/sparc64/rtld_machdep.h
index d92055c71381..27276eeb860f 100644
--- a/libexec/rtld-elf/sparc64/rtld_machdep.h
+++ b/libexec/rtld-elf/sparc64/rtld_machdep.h
@@ -37,7 +37,9 @@
 struct Struct_Obj_Entry;
 
 /* Return the address of the .dynamic section in the dynamic linker. */
-Elf_Dyn *rtld_dynamic(const struct Struct_Obj_Entry *);
+Elf_Dyn *rtld_dynamic_addr();
+#define	rtld_dynamic(obj)	rtld_dynamic_addr()
+#define	RTLD_IS_DYNAMIC()	(rtld_dynamic_addr() != NULL)
 
 Elf_Addr reloc_jmpslot(Elf_Addr *, Elf_Addr,
 		       const struct Struct_Obj_Entry *,
diff --git a/libexec/rtld-elf/sparc64/rtld_start.S b/libexec/rtld-elf/sparc64/rtld_start.S
index 146c6314fc63..58bdd1bbc944 100644
--- a/libexec/rtld-elf/sparc64/rtld_start.S
+++ b/libexec/rtld-elf/sparc64/rtld_start.S
@@ -71,8 +71,9 @@ END(.rtld_start)
  * Find the address of _DYNAMIC by disassembling a call instruction to it.
  * Binutils may not fill in the GOT as expected on other architectures.
  */
+.weak	_DYNAMIC
 
-ENTRY(rtld_dynamic)
+ENTRY(rtld_dynamic_addr)
 	save	%sp, -CCFSZ, %sp
 	call	1f
 	 nop
@@ -82,7 +83,7 @@ ENTRY(rtld_dynamic)
 	sra	%o0, 0, %o0
 	ret
 	 restore %o0, %o7, %o0
-END(rtld_dynamic)
+END(rtld_dynamic_addr)
 
 	/*
 	 * We have two separate entry points to the runtime linker.