Weak symbol support from NetBSD. This should bring us in sync with the

NetBSD ld code except for local changes for dlopen() and friends and
the hashing on the minor value of the shlibs.  We should be binary
compatible now with all their libraries.

Obtained from: NetBSD

1 files changed, 10 insertions, 5 deletions

diff --git a/include/link.h b/include/link.h
index 9f04624c7412..38c9c4028ecb 100644
--- a/include/link.h
+++ b/include/link.h
@@ -27,7 +27,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *	$Id: link.h,v 1.2 1994/02/13 20:47:18 jkh Exp $
+ *	$Id: link.h,v 1.3 1995/02/07 13:26:39 jkh Exp $
  */
 
 /*
@@ -94,11 +94,14 @@ struct nzlist {
 };
 
 #define N_AUX(p)	((p)->n_other & 0xf)
-#define N_RESERVED(p)	(((unsigned int)(p)->n_other >> 4) & 0xf)
+#define N_BIND(p)	(((unsigned int)(p)->n_other >> 4) & 0xf)
 #define N_OTHER(r, v)	(((unsigned int)(r) << 4) | ((v) & 0xf))
 
 #define AUX_OBJECT	1
 #define AUX_FUNC	2
+/*#define BIND_LOCAL	0	not used */
+/*#define BIND_GLOBAL	1	not used */
+#define BIND_WEAK	2
 
 
 /*
@@ -196,7 +199,7 @@ struct	_dynamic {
 	union {
 		struct section_dispatch_table *d_sdt;
 	} d_un;
-	struct ld_entry *d_entry;
+	struct ld_entry *d_entry;	/* XXX */
 };
 
 #define LD_VERSION_SUN		(3)
@@ -230,16 +233,18 @@ struct crt_ldso {
 	struct _dynamic	*crt_dp;	/* Main's __DYNAMIC */
 	char		**crt_ep;	/* environment strings */
 	caddr_t		crt_bp;		/* Breakpoint if run from debugger */
-	char		*crt_prog;	/* Program name */
+	char		*crt_prog;	/* Program name (v3) */
+	char		*crt_ldso;	/* Link editor name (v4) */
+	struct ld_entry	*crt_ldentry;	/* dl*() access (v4) */
 };
 
 /*
  * Version passed from crt0 to ld.so (1st argument to _rtld()).
  */
 #define CRT_VERSION_SUN		1
-#define CRT_VERSION_BSD		2
 #define CRT_VERSION_BSD_2	2
 #define CRT_VERSION_BSD_3	3
+#define CRT_VERSION_BSD_4	4
 
 
 /*