2014-07-02 Jing Yu <jingyu@google.com>

    Initial patch to enable gold aarch64 backend.

    This patch is just a skeleton which almost does nothing.
    It does not support ILP32 now.

    gold/ChangeLog:
	* aarch64.cc: New file
	* Makefile.am (TARGETSOURCES): Add aarch64.cc
	(ALL_TARGETOBJS): Add aarch64.$(OBJEXT)
	* Makefile.in: Regenerate.
	* configure.tgt: Add entries for aarch64*.
	* configure.ac:  Likewise.
	* configure: Likewise.

    elfcpp/ChangeLog:
	* aarch64.h: New file. New enums for aarch64-elf64 relocations.
	* elfcpp.h (EM_AARCH64, SHT_AARCH64_ATTRIBUTES, PT_AARCH64_ARCHEXT,
	PT_AARCH64_UNWIND): New enum constant.

3 files changed, 198 insertions, 1 deletions

diff --git a/elfcpp/ChangeLog b/elfcpp/ChangeLog
index f14ed9b3cae..d7dc3c3f798 100644
--- a/elfcpp/ChangeLog
+++ b/elfcpp/ChangeLog
@@ -1,3 +1,9 @@
+2014-07-02  Jing Yu  <jingyu@google.com>
+
+	* aarch64.h: New file. New enums for aarch64-elf64 relocations.
+	* elfcpp.h (EM_AARCH64, SHT_AARCH64_ATTRIBUTES, PT_AARCH64_ARCHEXT,
+	PT_AARCH64_UNWIND): New enum constant.
+
 2014-04-22  Christian Svensson  <blue@cmd.nu>
 
 	* elfcpp.h: Remove openrisc and or32 support.
diff --git a/elfcpp/aarch64.h b/elfcpp/aarch64.h
new file mode 100644
index 00000000000..4d1898f44df
--- /dev/null
+++ b/elfcpp/aarch64.h
@@ -0,0 +1,183 @@
+// aarch64.h -- ELF definitions specific to AARCH64  -*- C++ -*-
+
+// Copyright (C) 2014 Free Software Foundation, Inc.
+// Written by Jing Yu (jingyu@google.com)
+
+// This file is part of elfcpp.
+
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public License
+// as published by the Free Software Foundation; either version 2, or
+// (at your option) any later version.
+
+// In addition to the permissions in the GNU Library General Public
+// License, the Free Software Foundation gives you unlimited
+// permission to link the compiled version of this file into
+// combinations with other programs, and to distribute those
+// combinations without any restriction coming from the use of this
+// file.  (The Library Public License restrictions do apply in other
+// respects; for example, they cover modification of the file, and
+/// distribution when not linked into a combined executable.)
+
+// 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
+// Library General Public License for more details.
+
+// You should have received a copy of the GNU Library 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.
+
+#ifndef ELFCPP_AARCH64_H
+#define ELFCPP_AARCH64_H
+
+namespace elfcpp
+{
+
+// The relocation type information is taken from:
+//
+//   ELF for the ARM 64-bit Architecture (AArch64)
+//   Document number: ARM IHI 0056B, current through AArch64 ABI release 1.0
+//   Date of Issue: 22nd May, 2013
+//
+
+enum
+{
+  // Null relocation codes
+  R_AARCH64_NONE = 0,		// None
+  withdrawn = 256,		// Treat as R_AARCH64_NONE
+
+  // Static relocations
+  R_AARCH64_ABS64 = 257,	// S + A
+  R_AARCH64_ABS32 = 258,	// S + A
+  R_AARCH64_ABS16 = 259,	// S + A
+  R_AARCH64_PREL64 = 260,	// S + A - P
+  R_AARCH64_PREL32 = 261,	// S + A - P
+  R_AARCH64_PREL16 = 262,	// S + A - P
+  R_AARCH64_MOVW_UABS_G0 = 263,		// S + A
+  R_AARCH64_MOVW_UABS_G0_NC = 264,	// S + A
+  R_AARCH64_MOVW_UABS_G1 = 265,		// S + A
+  R_AARCH64_MOVW_UABS_G1_NC = 266,	// S + A
+  R_AARCH64_MOVW_UABS_G2 = 267,		// S + A
+  R_AARCH64_MOVW_UABS_G2_NC = 268,	// S + A
+  R_AARCH64_MOVW_UABS_G3 = 269,		// S + A
+  R_AARCH64_MOVW_SABS_G0 = 270,		// S + A
+  R_AARCH64_MOVW_SABS_G1 = 271,		// S + A
+  R_AARCH64_MOVW_SABS_G2 = 272,		// S + A
+  R_AARCH64_LD_PREL_LO19 = 273,		// S + A - P
+  R_AARCH64_ADR_PREL_LO21 = 274,	// S + A - P
+  R_AARCH64_ADR_PREL_PG_HI21 = 275,	// Page(S+A) - Page(P)
+  R_AARCH64_ADR_PREL_PG_HI21_NC = 276,	// Page(S+A) - Page(P)
+  R_AARCH64_ADD_ABS_LO12_NC = 277,	// S + A
+  R_AARCH64_LDST8_ABS_LO12_NC = 278,	// S + A
+  R_AARCH64_TSTBR14 = 279,		// S + A - P
+  R_AARCH64_CONDBR19 = 280,		// S + A - P
+  R_AARCH64_JUMP26 = 282,		// S + A - P
+  R_AARCH64_CALL26 = 283,		// S + A - P
+  R_AARCH64_LDST16_ABS_LO12_NC = 284,	// S + A
+  R_AARCH64_LDST32_ABS_LO12_NC = 285,	// S + A
+  R_AARCH64_LDST64_ABS_LO12_NC = 286,	// S + A
+  R_AARCH64_MOVW_PREL_G0 = 287,		// S + A - P
+  R_AARCH64_MOVW_PREL_G0_NC = 288,	// S + A - P
+  R_AARCH64_MOVW_PREL_G1 = 289,		// S + A - P
+  R_AARCH64_MOVW_PREL_G1_NC = 290,	// S + A - P
+  R_AARCH64_MOVW_PREL_G2 = 291,		// S + A - P
+  R_AARCH64_MOVW_PREL_G2_NC = 292,	// S + A - P
+  R_AARCH64_MOVW_PREL_G3 = 293,		// S + A - P
+  R_AARCH64_LDST128_ABS_LO12_NC = 299,	// S + A
+  R_AARCH64_MOVW_GOTOFF_G0 = 300,	// G(GDAT(S+A))-GOT
+  R_AARCH64_MOVW_GOTOFF_G0_NC = 301,	// G(GDAT(S+A))-GOT
+  R_AARCH64_MOVW_GOTOFF_G1 = 302,	// G(GDAT(S+A))-GOT
+  R_AARCH64_MOVW_GOTOFF_G1_NC = 303,	// G(GDAT(S+A))-GOT
+  R_AARCH64_MOVW_GOTOFF_G2 = 304,	// G(GDAT(S+A))-GOT
+  R_AARCH64_MOVW_GOTOFF_G2_NC = 305,	// G(GDAT(S+A))-GOT
+  R_AARCH64_MOVW_GOTOFF_G3 = 306,	// G(GDAT(S+A))-GOT
+  R_AARCH64_GOTREL64 = 307,		// S + A - GOT
+  R_AARCH64_GOTREL32 = 308,		// S + A - GOT
+  R_AARCH64_GOT_LD_PREL19 = 309,	// G(GDAT(S+A))-P
+  R_AARCH64_LD64_GOTOFF_LO15 = 310,	// G(GDAT(S+A))-GOT
+  R_AARCH64_ADR_GOT_PAGE = 311,		// Page(G(GDAT(S+A)))-Page(P)
+  R_AARCH64_LD64_GOT_LO12_NC = 312,	// G(GDAT(S+A))
+  R_AARCH64_LD64_GOTPAGE_LO15 = 313,	// G(GDAT(S+A))-Page(GOT)
+
+  // Relocations for thread-local storage
+  R_AARCH64_TLSGD_ADR_PREL21 = 512,		// G(GTLSIDX(S,A)) - P
+  R_AARCH64_TLSGD_ADR_PAGE21 = 513,		// Page(G(GTLSIDX(S,A)))-Page(P)
+  R_AARCH64_TLSGD_ADD_LO12_NC = 514,		// G(GTLSICX(S,A))
+  R_AARCH64_TLSGD_MOVW_G1 = 515,		// G(GTLSIDX(S,A)) - GOT
+  R_AARCH64_TLSGD_MOVW_G0_NC = 516,		// G(GTLSIDX(S,A)) - GOT
+
+  R_AARCH64_TLSLD_ADR_PREL21 = 517,		// G(GLDM(S)) - P
+  R_AARCH64_TLSLD_ADR_PAGE21 = 518,		// Page(G(GLDM(S))) - Page(P)
+  R_AARCH64_TLSLD_ADD_LO12_NC = 519,		// G(GLDM(S))
+  R_AARCH64_TLSLD_MOVW_G1 = 520,		// G(GLDM(S)) - GOT
+  R_AARCH64_TLSLD_MOVW_G0_NC = 521,		// G(GLDM(S)) - GOT
+  R_AARCH64_TLSLD_LD_PREL19 = 522,		// G(GLDM(S)) - P
+  R_AARCH64_TLSLD_MOVW_DTPREL_G2 = 523,		// DTPREL(S+A)
+  R_AARCH64_TLSLD_MOVW_DTPREL_G1 = 524,		// DTPREL(S+A)
+  R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC = 525,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_MOVW_DTPREL_G0 = 526,		// DTPREL(S+A)
+  R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC = 527,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_ADD_DTPREL_HI12 = 528,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_ADD_DTPREL_LO12 = 529,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC = 530,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST8_DTPREL_LO12 = 531,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC = 532,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST16_DTPREL_LO12 = 533,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC = 534,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST32_DTPREL_LO12 = 535,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC = 536,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST64_DTPREL_LO12 = 537,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC = 538,	// DTPREL(S+A)
+  R_AARCH64_TLSIE_MOVW_GOTTPREL_G1 = 539,	// G(GTPREL(S+A)) - GOT
+  R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC = 540,	// G(GTPREL(S+A)) - GOT
+  R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 = 541,	// Page(G(GTPREL(S+A)))-Page(P)
+  R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC = 542,	// G(GTPREL(S+A))
+  R_AARCH64_TLSIE_LD_GOTTPREL_PREL19 = 543,	// G(GTPREL(S+A)) - P
+  R_AARCH64_TLSLE_MOVW_TPREL_G2 = 544,		// TPREL(S+A)
+  R_AARCH64_TLSLE_MOVW_TPREL_G1 = 545,		// TPREL(S+A)
+  R_AARCH64_TLSLE_MOVW_TPREL_G1_NC = 546,	// TPREL(S+A)
+  R_AARCH64_TLSLE_MOVW_TPREL_G0 = 547,		// TPREL(S+A)
+  R_AARCH64_TLSLE_MOVW_TPREL_G0_NC = 548,	// TPREL(S+A)
+  R_AARCH64_TLSLE_ADD_TPREL_HI12 = 549,		// TPREL(S+A)
+  R_AARCH64_TLSLE_ADD_TPREL_LO12 = 550,		// TPREL(S+A)
+  R_AARCH64_TLSLE_ADD_TPREL_LO12_NC = 551,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LDST8_TPREL_LO12 = 552,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC = 553,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LDST16_TPREL_LO12 = 554,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LSDT16_TPREL_LO12_NC = 555,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LDST32_TPREL_LO12 = 556,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC = 557,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LDST64_TPREL_LO12 = 558,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC = 559,	// TPREL(S+A)
+  R_AARCH64_TLSDESC_LD_PREL19 = 560,	// G(GTLSDESC(S+A)) - P
+  R_AARCH64_TLSDESC_ADR_PREL21 = 561,	// G(GTLSDESC(S+A)) - P
+  R_AARCH64_TLSDESC_ADR_PAGE21 = 562,	// Page(G(GTLSDESC(S+A)))-Page(P)
+  R_AARCH64_TLSDESC_LD64_LO12 = 563,	// G(GTLSDESC(S+A))
+  R_AARCH64_TLSDESC_ADD_LO12 = 564,	// G(GTLSDESC(S+A))
+  R_AARCH64_TLSDESC_OFF_G1 = 565,	// G(GTLSDESC(S+A)) - GOT
+  R_AARCH64_TLSDESC_OFF_G0_NC = 566,	// G(GTLSDESC(S+A)) - GOT
+  R_AARCH64_TLSDESC_LDR = 567,		// None
+  R_AARCH64_TLSDESC_ADD = 568,		// None
+  R_AARCH64_TLSDESC_CALL = 569,		// None
+  R_AARCH64_TLSLE_LDST128_TPREL_LO12 = 570,	// TPREL(S+A)
+  R_AARCH64_TLSLE_LDST128_TPREL_LO12_NC = 571,	// TPREL(S+A)
+  R_AARCH64_TLSLD_LDST128_DTPREL_LO12 = 572,	// DTPREL(S+A)
+  R_AARCH64_TLSLD_LDST128_DTPREL_LO12_NC = 573,	// DTPREL(S+A)
+
+  // Dynamic relocations
+  R_AARCH64_COPY = 1024,
+  R_AARCH64_GLOB_DAT = 1025,		// S + A
+  R_AARCH64_JUMP_SLOT = 1026,		// S + A
+  R_AARCH64_RELATIVE = 1027,		// Delta(S) + A
+  R_AARCH64_TLS_DTPREL64 = 1028,	// DTPREL(S+A)
+  R_AARCH64_TLS_DTPMOD64 = 1029,	// LDM(S)
+  R_AARCH64_TLS_TPREL64 = 1030,		// TPREL(S+A)
+  R_AARCH64_TLSDESC = 1031,		// TLSDESC(S+A)
+  R_AARCH64_IRELATIVE = 1032,		// Indirect(Delta(S) + A)
+};
+
+} // End namespace elfcpp.
+
+#endif // !defined(ELFCPP_AARCH64_H)
diff --git a/elfcpp/elfcpp.h b/elfcpp/elfcpp.h
index 561b54a9206..8e8e6759afb 100644
--- a/elfcpp/elfcpp.h
+++ b/elfcpp/elfcpp.h
@@ -268,6 +268,7 @@ enum EM
   EM_UNICORE = 110,
   EM_ALTERA_NIOS2 = 113,
   EM_CRX = 114,
+  EM_AARCH64 = 183,
   EM_TILEGX = 191,
   // The Morph MT.
   EM_MT = 0x2530,
@@ -406,6 +407,9 @@ enum SHT
   // Section contains miscellaneous options.
   SHT_MIPS_OPTIONS = 0x7000000d,
 
+  // AARCH64-specific section type.
+  SHT_AARCH64_ATTRIBUTES = 0x70000003,
+
   // Link editor is to sort the entries in this section based on the
   // address specified in the associated symbol table entry.
   SHT_ORDERED = 0x7fffffff
@@ -490,7 +494,11 @@ enum PT
   // Runtime procedure table.
   PT_MIPS_RTPROC = 0x70000001,
   // .MIPS.options section.
-  PT_MIPS_OPTIONS = 0x70000002
+  PT_MIPS_OPTIONS = 0x70000002,
+  // Platform architecture compatibility information
+  PT_AARCH64_ARCHEXT = 0x70000000,
+  // Exception unwind tables
+  PT_AARCH64_UNWIND = 0x70000001
 };
 
 // The valid bit flags found in the Phdr p_flags field.