gold aarch64 patch to enable linking hello_wolrd.

elfcpp/ChangeLog:
2014-08-08  Han Shen  <shenhan@google.com>

	* aarch64.h (withdrawn): Replaced with R_AARCH64_withdrawn.

2014-08-08  Jing Yu  <jingyu@google.com>
	    Han Shen  <shenhan@google.com>

	* Makefile.am (HFILES): Add aarch64-reloc-property.h.
	(DEFFILES): add aarch64-reloc.def.
	(TARGETSOURCES): Add aarch64-reloc-property.cc.
	(ALL_TARGETOBJS): Add aarch64-reloc-property.$(OBJEXT).
	* Makefile.in: Regenerate.
	* aarch64-reloc-property.cc: New file.
	* aarch64-reloc-property.h: New file.
	* aarch64-reloc.def: New file.
	* aarch64.cc: Include aarch64-reloc-property.h. Replace spaces
	with tab to make the format consistent.
	(Output_data_got_aarch64::symbol_table_): New method.
	(Target_aarch64::do_plt_address_for_global): New method.
	(Target_aarch64::do_plt_address_for_local): New method.
	(Target_aarch64::do_select_as_default_target): New method.
	(Target_aarch64::do_make_data_plt): New method.
	(Target_aarch64::make_data_plt): New method.
	(Output_data_plt_aarch64::has_irelative_section): New method.
	(Output_data_plt_aarch64::address_for_global): New method.
	(Output_data_plt_aarch64::address_for_local): New method.
	(Output_data_plt_aarch64::irelative_rel_): New parameter.
	(Output_data_plt_aarch64::add_entry): Implement contents.
	(Output_data_plt_aarch64::set_final_data_size): Fix typo.
	(Output_data_plt_aarch64::do_write): Remove useless got_base. Set
	the got_pov entry to plt0.
	(Output_data_plt_aarch64_standard::do_fill_first_plt_entry):
	Implement contents.
	(Output_data_plt_aarch64_standard::do_fill_plt_entry): Implement.
	(AArch64_howto): New struct.
	(aarch64_howto[]): New static const array.
	(AArch64_relocate_functions): New class.
	(Target_aarch64::Scan::get_reference_flags): Remove method.
	(Target_aarch64::Scan::local): Implement to support a few relocations.
	(Target_aarch64::Scan::global): Implement to support a few relocations.
	(Target_aarch64::make_plt_section): Implement contents.
	(Target_aarch64::make_plt_entry): Implement contents.
	(Target_aarch64::do_finalize_sections): Implement contents.
	(Target_aarch64::Relocate::relocate): Implement a few relocations.
	(Target_aarch64::relocate_section): Implement contents.

1 files changed, 70 insertions, 0 deletions

diff --git a/gold/aarch64-reloc.def b/gold/aarch64-reloc.def
new file mode 100644
index 0000000..4f6710e
--- /dev/null
+++ b/gold/aarch64-reloc.def
@@ -0,0 +1,70 @@
+// aarch64-reloc.def -- AArch64 relocation definitions.
+
+// Copyright (C) 2014 Free Software Foundation, Inc.
+// Written by Han Shen <shenhan@google.com> and Jing Yu <jingyu@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+//
+//
+//
+// Insn modified by relocation, see enum Reloc_inst -------------------------------------------------------------------------+
+// Symbol reference type -----------------------------------------------------------------------------+		             |
+// Portion off X to retrieve -------------------------------------------------------------------+     |		             |
+// Checking function, see Note(A)---------------------------------------+                       |     |		             |
+// Group index---------------------------------------------------+      |                       |     |		             |
+// Implemented----------------------------------------------+    |      |                       |     |		             |
+// Class-------------------------------------+              |    |      |                       |     |		             |
+// Type----------------------------+         |              |    |      |                       |     |		             |
+// Name                            |         |              |    |      |                       |     |		             |
+//  |                              |         |              |    |      |                       |     |		             |
+ARD(ABS64                        , STATIC ,  DATA       ,   Y,  -1,    0,0                ,    0,0  , Symbol::ABSOLUTE_REF , DATA )
+ARD(ABS32                        , STATIC ,  DATA       ,   Y,  -1,   31,32               ,    0,0  , Symbol::ABSOLUTE_REF , DATA )
+ARD(ABS16                        , STATIC ,  DATA       ,   Y,  -1,   15,16               ,    0,0  , Symbol::ABSOLUTE_REF , DATA )
+ARD(PREL64                       , STATIC ,  DATA       ,   Y,  -1,    0,0                ,    0,0  , Symbol::RELATIVE_REF , DATA )
+ARD(PREL32                       , STATIC ,  DATA       ,   Y,  -1,   31,32               ,    0,0  , Symbol::RELATIVE_REF , DATA )
+ARD(PREL16                       , STATIC ,  DATA       ,   Y,  -1,   15,16               ,    0,0  , Symbol::RELATIVE_REF , DATA )
+// Above is from Table 4-6, Data relocations, 257-262.
+
+ARD(ADR_PREL_PG_HI21             , STATIC ,  AARCH64    ,   Y,  -1,   32,32               ,   12,32 , Symbol::RELATIVE_REF , ADRP )
+ARD(ADR_PREL_PG_HI21_NC          , STATIC ,  AARCH64    ,   Y,  -1,    0,0                ,   12,32 , Symbol::RELATIVE_REF , ADRP )
+ARD(LDST8_ABS_LO12_NC            , STATIC ,  AARCH64    ,   Y,  -1,    0,0                ,    0,11 , Symbol::ABSOLUTE_REF , LDST )
+ARD(LDST16_ABS_LO12_NC           , STATIC ,  AARCH64    ,   Y,  -1,    0,RL_CHECK_ALIGN2  ,    1,11 , Symbol::ABSOLUTE_REF , LDST )
+ARD(LDST32_ABS_LO12_NC           , STATIC ,  AARCH64    ,   Y,  -1,    0,RL_CHECK_ALIGN4  ,    2,11 , Symbol::ABSOLUTE_REF , LDST )
+ARD(LDST64_ABS_LO12_NC           , STATIC ,  AARCH64    ,   Y,  -1,    0,RL_CHECK_ALIGN8  ,    3,11 , Symbol::ABSOLUTE_REF , LDST )
+ARD(LDST128_ABS_LO12_NC          , STATIC ,  AARCH64    ,   Y,  -1,    0,RL_CHECK_ALIGN16 ,    4,11 , Symbol::ABSOLUTE_REF , LDST )
+ARD(ADD_ABS_LO12_NC              , STATIC ,  AARCH64    ,   Y,  -1,    0,0                ,    0,11 , Symbol::ABSOLUTE_REF , ADD )
+ARD(ADR_GOT_PAGE                 , STATIC ,  AARCH64    ,   Y,  -1,   32,32               ,   12,32 , Symbol::RELATIVE_REF , ADRP )
+ARD(LD64_GOT_LO12_NC             , STATIC ,  AARCH64    ,   Y,  -1,    0,RL_CHECK_ALIGN8  ,    3,11 , Symbol::ABSOLUTE_REF , LDST )
+ARD(TSTBR14                      , STATIC ,  CFLOW      ,   N,  -1,   15,15               ,    2,15 , Symbol::ABSOLUTE_REF , TBZNZ )
+ARD(CONDBR19                     , STATIC ,  CFLOW      ,   N,  -1,   20,20               ,    2,20 , Symbol::ABSOLUTE_REF , CONDB )
+ARD(CALL26                       , STATIC ,  CFLOW      ,   Y,  -1,   27,27               ,    2,27 , (Symbol::FUNCTION_CALL|Symbol::RELATIVE_REF) , CALL )
+ARD(JUMP26                       , STATIC ,  CFLOW      ,   Y,  -1,   27,27               ,    2,27 , (Symbol::FUNCTION_CALL|Symbol::RELATIVE_REF) , B )
+// Above is from Table 4-10, Relocations for control-flow instructions,
+// 279-283.
+
+ARD(TLSIE_MOVW_GOTTPREL_G1       , STATIC ,  AARCH64    ,   N,  -1,    0,0                ,   16,31 , Symbol::ABSOLUTE_REF , MOVW )
+ARD(TLSIE_MOVW_GOTTPREL_G0_NC    , STATIC ,  AARCH64    ,   N,  -1,    0,0                ,    0,15 , Symbol::ABSOLUTE_REF , MOVW )
+ARD(TLSIE_ADR_GOTTPREL_PAGE21    , STATIC ,  AARCH64    ,   Y,  -1,   32,32               ,   12,32 , Symbol::ABSOLUTE_REF , ADRP )
+ARD(TLSIE_LD64_GOTTPREL_LO12_NC  , STATIC ,  AARCH64    ,   N,  -1,   32,32               ,   12,32 , Symbol::ABSOLUTE_REF , LDST )
+ARD(TLSIE_LD_GOTTPREL_PREL19     , STATIC ,  AARCH64    ,   N,  -1,   20,20               ,    2,20 , Symbol::ABSOLUTE_REF , LD )
+// Above is from Table 4-17, Initial Exec TLS relocations, 539-543.
+
+// Note -
+// A - Checking X, (L,U), if L == 0 && U == 0, no check. Otherwise, L!=0,
+//     check that -2^L<=X<2^U. Also an extra alignment check could be embeded
+//     into U.