Remove powerpc.cc copy of use_plt_offset

This adds an extra flag for needs_dynamic_reloc() in order to remove
the copy of this function and use_plt_offset() in powerpc.cc, and
tweaks the powerpc get_reference_flags() to return the flag as
appropriate.  ELFv2 does not want ELFv1 behaviour here.

	* symtab.h (Symbol::Reference_flags): Add FUNC_DESC_ABI.
	(Symbol::needs_dynamic_reloc): Test new flag.
	* powerpc.cc (needs_dynamic_reloc, use_plt_offset): Delete.
	(Target_powerpc::Scan::get_reference_flags): Add target param.
	Return FUNC_DESC_ABI for 64-bit ELFv1.
	(Target_powerpc::Branch_info::make_stub): Adjust get_reference_flags
	call.
	(Target_powerpc::Scan::global): Use Symbol::needs_dynamic_reloc.
	(Target_powerpc::Relocate::relocate): Use Symbol::use_plt_offset.

1 files changed, 6 insertions, 2 deletions

diff --git a/gold/symtab.h b/gold/symtab.h
index 9299ea8..1232c97 100644
--- a/gold/symtab.h
+++ b/gold/symtab.h
@@ -638,7 +638,10 @@ class Symbol
     // A TLS-related reference.
     TLS_REF = 4,
     // A reference that can always be treated as a function call.
-    FUNCTION_CALL = 8
+    FUNCTION_CALL = 8,
+    // When set, says that dynamic relocations are needed even if a
+    // symbol has a plt entry.
+    FUNC_DESC_ABI = 16,
   };
 
   // Given a direct absolute or pc-relative static relocation against
@@ -675,7 +678,8 @@ class Symbol
 
     // A reference to any PLT entry in a non-position-independent executable
     // does not need a dynamic relocation.
-    if (!parameters->options().output_is_position_independent()
+    if (!(flags & FUNC_DESC_ABI)
+	&& !parameters->options().output_is_position_independent()
         && this->has_plt_offset())
       return false;