- more nof libs on ppc

[packages/gcc.git] / gcc32-i386-pic-label-thunk.patch

2002-06-04  Richard Henderson  <rth@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	* config/i386/i386.c (USE_HIDDEN_LINKONCE): New.
	(ix86_asm_file_end): If USE_HIDDEN_LINKONCE, emit get_pc thunks
	into linkonce sections.
	(load_pic_register): Set up pic_label_name for it.

--- gcc/config/i386/i386.c.jj	Mon Jun  3 17:24:13 2002
+++ gcc/config/i386/i386.c	Tue Jun  4 15:49:17 2002
@@ -3786,6 +3786,12 @@ ix86_setup_frame_addresses ()
   cfun->machine->accesses_prev_frame = 1;
 }
 \f
+#if defined(HAVE_GAS_HIDDEN) && defined(SUPPORTS_ONE_ONLY)
+# define USE_HIDDEN_LINKONCE 1
+#else
+# define USE_HIDDEN_LINKONCE 0
+#endif
+
 static char pic_label_name[32];
 
 /* This function generates code for -fpic that loads %ebx with
@@ -3800,10 +3806,6 @@ ix86_asm_file_end (file)
   if (! TARGET_DEEP_BRANCH_PREDICTION || pic_label_name[0] == 0)
     return;
 
-  /* ??? Binutils 2.10 and earlier has a linkonce elimination bug related
-     to updating relocations to a section being discarded such that this
-     doesn't work.  Ought to detect this at configure time.  */
-#if 0
   /* The trick here is to create a linkonce section containing the
      pic label thunk, but to refer to it with an internal label.
      Because the label is internal, we don't have inter-dso name
@@ -3811,28 +3813,27 @@ ix86_asm_file_end (file)
 
      In order to use these macros, however, we must create a fake
      function decl.  */
-  if (targetm.have_named_sections)
+  if (USE_HIDDEN_LINKONCE && targetm.have_named_sections)
     {
       tree decl = build_decl (FUNCTION_DECL,
-			      get_identifier ("i686.get_pc_thunk"),
+			      get_identifier (pic_label_name),
 			      error_mark_node);
+      TREE_PUBLIC (decl) = 1;
+      TREE_STATIC (decl) = 1;
       DECL_ONE_ONLY (decl) = 1;
       UNIQUE_SECTION (decl, 0);
-      named_section (decl, NULL);
+      named_section (decl, NULL, 0);
+      ASM_GLOBALIZE_LABEL (file, pic_label_name);
+      fputs ("\t.hidden\t", file);
+      assemble_name (file, pic_label_name);
+      fputc ('\n', file);
+      ASM_DECLARE_FUNCTION_NAME (file, pic_label_name, decl);
     }
   else
-#else
-    text_section ();
-#endif
-
-  /* This used to call ASM_DECLARE_FUNCTION_NAME() but since it's an
-     internal (non-global) label that's being emitted, it didn't make
-     sense to have .type information for local labels.   This caused
-     the SCO OpenServer 5.0.4 ELF assembler grief (why are you giving
-     me debug info for a label that you're declaring non-global?) this
-     was changed to call ASM_OUTPUT_LABEL() instead.  */
-
-  ASM_OUTPUT_LABEL (file, pic_label_name);
+    {
+      text_section ();
+      ASM_OUTPUT_LABEL (file, pic_label_name);
+    }
 
   xops[0] = pic_offset_table_rtx;
   xops[1] = gen_rtx_MEM (SImode, stack_pointer_rtx);
@@ -3853,7 +3854,12 @@ load_pic_register ()
   if (TARGET_DEEP_BRANCH_PREDICTION)
     {
       if (! pic_label_name[0])
-	ASM_GENERATE_INTERNAL_LABEL (pic_label_name, "LPR", 0);
+	{
+	  if (USE_HIDDEN_LINKONCE && targetm.have_named_sections)
+	    strcpy (pic_label_name, "__i686.get_pc_thunk.bx");
+	  else
+	    ASM_GENERATE_INTERNAL_LABEL (pic_label_name, "LPR", 0);
+	}
       pclab = gen_rtx_MEM (QImode, gen_rtx_SYMBOL_REF (Pmode, pic_label_name));
     }
   else