From 03fd21e05b8bc2f6db3ccad69f0e12436a6dea7a Mon Sep 17 00:00:00 2001
From: jkh <jkh@FreeBSD.org>
Date: Wed, 22 Dec 1993 23:28:35 +0000
Subject: C++ support changes (+misc fixes) from Paul K.

---
 libexec/rtld-aout/rtld.c | 55 +++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 43 insertions(+), 12 deletions(-)

(limited to 'libexec')

diff --git a/libexec/rtld-aout/rtld.c b/libexec/rtld-aout/rtld.c
index fd48fb7..422646f 100644
--- a/libexec/rtld-aout/rtld.c
+++ b/libexec/rtld-aout/rtld.c
@@ -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: rtld.c,v 1.10 1993/12/11 20:08:39 jkh Exp $
+ *	$Id: rtld.c,v 1.11 1993/12/11 21:06:00 jkh Exp $
  */
 
 #include <machine/vmparam.h>
@@ -141,6 +141,7 @@ static void		check_text_reloc __P((	struct relocation_info *,
 						caddr_t));
 static void		reloc_maps __P((void));
 static void		reloc_copy __P((void));
+static void		init_maps __P((void));
 static char		*rtfindlib __P((char *, int, int, int *));
 void			binder_entry __P((void));
 long			binder __P((jmpslot_t *));
@@ -216,6 +217,7 @@ struct link_dynamic	*dp;
 	/* Relocate all loaded objects according to their RRS segments */
 	reloc_maps();
 	reloc_copy();
+	init_maps();
 
 	/* Fill in some field in main's __DYNAMIC structure */
 	crtp->crt_dp->ld_entry = &ld_entry;
@@ -295,7 +297,7 @@ struct crt_ldso	*crtp;
 			printf("\t%s => %s (%#x)\n", name, path, lmp->lm_addr);
 	}
 
-	_exit(0);
+	exit(0);
 }
 
 /*
@@ -438,15 +440,18 @@ reloc_maps()
 			check_text_reloc(r, lmp, addr);
 
 			if (RELOC_EXTERN_P(r)) {
-				struct link_map	*src_map;
-				struct nzlist	*np;
+				struct link_map	*src_map = NULL;
+				struct nzlist	*p, *np;
 				long	relocation = md_get_addend(r, addr);
 
 				if (RELOC_LAZY_P(r))
 					continue;
 
-				sym = LM_STRINGS(lmp) +
-					LM_SYMBOL(lmp,RELOC_SYMBOL(r))->nz_strx;
+				p = LM_SYMBOL(lmp,RELOC_SYMBOL(r));
+				if (p->nz_type == (N_SETV + N_EXT))
+					src_map = lmp;
+
+				sym = LM_STRINGS(lmp) + p->nz_strx;
 
 				np = lookup(sym, &src_map, 0/*XXX-jumpslots!*/);
 				if (np == NULL)
@@ -481,7 +486,9 @@ src_map->lm_addr, np->nz_value, sym, addr, relocation, np->nz_size);
 					continue;
 				}
 #if DEBUG
-xprintf("RELOCATE(%s) external: %s at %#x, reloc = %#x\n", lmp->lm_name, sym, addr, relocation);
+if (sym[2]=='_'&&(sym[3]=='C'||sym[3]=='D')&&sym[4]=='T')
+xprintf("RELOCATE(%s) external: %s at %#x, reloc = %#x in %s\n",
+lmp->lm_name, sym, addr, relocation, src_map?src_map->lm_name:"(NUL)");
 #endif
 				md_relocate(r, relocation, addr, 0);
 
@@ -564,23 +571,43 @@ caddr_t			addr;
 	lmp->lm_rwt = 1;
 }
 
+static void
+init_maps()
+{
+	struct link_map		*lmp, *src_map;
+	struct nzlist		*np;
+	void			(*func)();
+
+	for (lmp = link_map_head; lmp; lmp = lmp->lm_next) {
+		src_map = lmp;
+		np = lookup("___init", &src_map, 1);
+#if DEBUG
+if (np)
+xprintf("Calling __init in %s at %#x\n", src_map->lm_name, np->nz_value+src_map->lm_addr);
+#endif
+		if (np) {
+			func = (void (*)())(src_map->lm_addr + np->nz_value);
+			(*func)();
+		}
+	}
+}
+
 /*
  * Lookup NAME in the link maps. The link map producing a definition
- * is returned in SRC_MAP. If STRONG is set, the symbol returned must
+ * is returned in SRC_MAP. If SRC_MAP is not NULL on entry the search is
+ * confined to that map. If STRONG is set, the symbol returned must
  * have a proper type (used by binder()).
  */
 static struct nzlist *
 lookup(name, src_map, strong)
 char		*name;
-struct link_map	**src_map;
+struct link_map	**src_map;	/* IN/OUT */
 int		strong;
 {
 	long			common_size = 0;
 	struct link_map		*lmp;
 	struct rt_symbol	*rtsp;
 
-	*src_map = NULL;
-
 	if ((rtsp = lookup_rts(name)) != NULL)
 		return rtsp->rt_sp;
 
@@ -594,6 +621,9 @@ int		strong;
 		char		*cp;
 		struct	nzlist	*np;
 
+		if (*src_map && lmp != *src_map)
+			continue;
+
 		/*
 		 * Compute bucket in which the symbol might be found.
 		 */
@@ -672,7 +702,7 @@ long
 binder(jsp)
 jmpslot_t	*jsp;
 {
-	struct link_map	*lmp, *src_map;
+	struct link_map	*lmp, *src_map = NULL;
 	long		addr;
 	char		*sym;
 	struct nzlist	*np;
@@ -1004,3 +1034,4 @@ char	*fmt;
 	(void)write(1, buf, strlen(buf));
 	va_end(ap);
 }
+
-- 
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