Objective-C, NeXT: Adjust symbol marking to match host tools.

Current host tools mark some additional symbols as 'no dead strip' and also
expose one additional group to the linker.  This does not affect older Darwin
versions or x86_64, but omitting these changes results in link errors for
aarch64.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
gcc/ChangeLog:

	* config/darwin.c (darwin_label_is_anonymous_local_objc_name): Make
	protocol class methods linker-visible.

gcc/objc/ChangeLog:

	* objc-next-runtime-abi-02.c (next_runtime_abi_02_protocol_decl): Do
	not dead-strip the runtime meta-data symbols.
	(build_v2_classrefs_table): Likewise.
	(build_v2_protocol_list_address_table): Likewise.

(cherry picked from commit ecd5727c0a662a8fea6b5f8eac6f3f15bf5ef851)

diff --git a/gcc/config/darwin.c b/gcc/config/darwin.c
index b79c0d1d2b41bdc9f6172c026c798aeb984a3341..dedf84d6247395ad4f9182b038c93a3ba0b3fa58 100644 (file)
--- a/gcc/config/darwin.c
+++ b/gcc/config/darwin.c
@@ -1933,6 +1933,8 @@ darwin_label_is_anonymous_local_objc_name (const char *name)
     }
   else if (!strncmp ((const char *)p, "ClassMethods", 12))
     return false;
+  else if (!strncmp ((const char *)p, "ClassProtocols", 14))
+    return false;
   else if (!strncmp ((const char *)p, "Instance", 8))
     {
       if (p[8] == 'I' || p[8] == 'M')

diff --git a/gcc/objc/objc-next-runtime-abi-02.c b/gcc/objc/objc-next-runtime-abi-02.c
index 19f137c632efb1d46bdb1526c236fba63fb09f81..f1c858b2cd7c5ef816455c33be9178d9ba83e9f8 100644 (file)
--- a/gcc/objc/objc-next-runtime-abi-02.c
+++ b/gcc/objc/objc-next-runtime-abi-02.c
@@ -1035,6 +1035,7 @@ next_runtime_abi_02_protocol_decl (tree p)
   else
     decl = start_var_decl (objc_v2_protocol_template, buf);
   OBJCMETA (decl, objc_meta, meta_protocol);
+  DECL_PRESERVE_P (decl) = 1;
   return decl;
 }
 
@@ -2124,8 +2125,8 @@ build_v2_classrefs_table (void)
          expr = convert (objc_class_type, build_fold_addr_expr (expr));
        }
       /* The runtime wants this, even if it appears unused, so we must force the
-        output.
-      DECL_PRESERVE_P (decl) = 1; */
+        output.  */
+      DECL_PRESERVE_P (decl) = 1;
       finish_var_decl (decl, expr);
     }
 }
@@ -2327,6 +2328,7 @@ build_v2_protocol_list_address_table (void)
       expr = convert (objc_protocol_type, build_fold_addr_expr (ref->refdecl));
       OBJCMETA (decl, objc_meta, meta_label_protocollist);
       finish_var_decl (decl, expr);
+      DECL_PRESERVE_P (decl) = 1;
     }
 
     /* TODO: delete the vec.  */