AArch64: Add support for AArch64 EFI (efi-*-aarch64).users/ARM/efi-aarch64-support-binutils

This adds support for efi-*-aarch64 by virtue of adding a new PEI target
pei-aarch64-little.  This is not a full tagret and only exists to support EFI
at this time.

This means that this target does not support relocation processing and is mostly
a container format.

As such it's not valid for use with gas but only with objcopy.

Any magic number is based on the Microsoft PE specification [1].

[1] https://docs.microsoft.com/en-us/windows/win32/debug/pe-format

bfd/ChangeLog:

2021-10-21  Tamar Christina  <tamar.christina@arm.com>

	PR binutils/26218
	* .gitignore (pe-aarch64igen.c): New.
	* Makefile.am (pei-aarch64.lo, pe-aarch64igen.lo, pei-aarch64.c,
	pe-aarch64igen.c): Add support.
	* Makefile.in: Likewise.
	* bfd.c (bfd_get_sign_extend_vma): Add pei-aarch64-little.
	* coff-aarch64.c: New file.
	* coffcode.h (coff_set_arch_mach_hook, coff_set_flags,
	coff_write_object_contents) Add aarch64 (aarch64_pei_vec) support.
	* config.bfd: Likewise.
	* configure: Likewise.
	* configure.ac: Likewise.
	* libpei.h (GET_OPTHDR_IMAGE_BASE, PUT_OPTHDR_IMAGE_BASE,
	GET_OPTHDR_SIZE_OF_STACK_RESERVE, PUT_OPTHDR_SIZE_OF_STACK_RESERVE,
	GET_OPTHDR_SIZE_OF_STACK_COMMIT, PUT_OPTHDR_SIZE_OF_STACK_COMMIT,
	GET_OPTHDR_SIZE_OF_HEAP_RESERVE, PUT_OPTHDR_SIZE_OF_HEAP_RESERVE,
	GET_OPTHDR_SIZE_OF_HEAP_COMMIT, PUT_OPTHDR_SIZE_OF_HEAP_COMMIT,
	GET_PDATA_ENTRY, _bfd_peAArch64_bfd_copy_private_bfd_data_common,
	_bfd_peAArch64_bfd_copy_private_section_data,
	_bfd_peAArch64_get_symbol_info, _bfd_peAArch64_only_swap_filehdr_out,
	_bfd_peAArch64_print_private_bfd_data_common,
	_bfd_peAArch64i_final_link_postscript,
	_bfd_peAArch64i_only_swap_filehdr_out, _bfd_peAArch64i_swap_aouthdr_in,
	_bfd_peAArch64i_swap_aouthdr_out, _bfd_peAArch64i_swap_aux_in,
	_bfd_peAArch64i_swap_aux_out, _bfd_peAArch64i_swap_lineno_in,
	_bfd_peAArch64i_swap_lineno_out, _bfd_peAArch64i_swap_scnhdr_out,
	_bfd_peAArch64i_swap_sym_in, _bfd_peAArch64i_swap_sym_out,
	_bfd_peAArch64i_swap_debugdir_in, _bfd_peAArch64i_swap_debugdir_out,
	_bfd_peAArch64i_write_codeview_record,
	_bfd_peAArch64i_slurp_codeview_record,
	_bfd_peAArch64_print_ce_compressed_pdata): New.
	* peXXigen.c (_bfd_XXi_swap_aouthdr_in, _bfd_XXi_swap_aouthdr_out,
	pe_print_pdata, _bfd_XX_print_private_bfd_data_common,
	_bfd_XX_bfd_copy_private_section_data, _bfd_XXi_final_link_postscript):
	Support COFF_WITH_peAArch64,
	* pei-aarch64.c: New file.
	* peicode.h (coff_swap_scnhdr_in, pe_ILF_build_a_bfd, pe_ILF_object_p):
	Support COFF_WITH_peAArch64.
	(jtab): Add dummy entry that traps.
	* targets.c (aarch64_pei_vec): New.

binutils/ChangeLog:

2021-10-21  Tamar Christina  <tamar.christina@arm.com>

	PR binutils/26218
	* objcopy.c (convert_efi_target): Add efi-*-aarch64 support.
	* testsuite/binutils-all/aarch64/pei-aarch64-little.d: New test.
	* testsuite/binutils-all/aarch64/pei-aarch64-little.s: New test.

include/ChangeLog:

2021-10-21  Tamar Christina  <tamar.christina@arm.com>

	PR binutils/26218
	* coff/aarch64.h: New file.
	* coff/pe.h (IMAGE_FILE_MACHINE_ARM64): New.

1 files changed, 75 insertions, 0 deletions

diff --git a/bfd/pei-aarch64.c b/bfd/pei-aarch64.c
new file mode 100644
index 0000000..99326d1
--- /dev/null
+++ b/bfd/pei-aarch64.c
@@ -0,0 +1,75 @@
+/* BFD back-end for AArch64 PE IMAGE COFF files.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   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.  */
+
+#include "sysdep.h"
+#include "bfd.h"
+
+#define TARGET_SYM		aarch64_pei_vec
+#define TARGET_NAME		"pei-aarch64-little"
+#define TARGET_ARCHITECTURE	bfd_arch_aarch64
+#define TARGET_PAGESIZE		4096
+#define TARGET_BIG_ENDIAN	0
+#define TARGET_ARCHIVE		0
+#define TARGET_PRIORITY		0
+
+#define COFF_IMAGE_WITH_PE
+/* Rename the above into.. */
+#define COFF_WITH_peAArch64
+#define COFF_WITH_PE
+#define PCRELOFFSET	   true
+
+/* Long section names not allowed in executable images, only object files.  */
+#define COFF_LONG_SECTION_NAMES 0
+
+#define COFF_SECTION_ALIGNMENT_ENTRIES \
+{ COFF_SECTION_NAME_EXACT_MATCH (".bss"), \
+  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
+{ COFF_SECTION_NAME_EXACT_MATCH (".data"), \
+  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
+{ COFF_SECTION_NAME_EXACT_MATCH (".rdata"), \
+  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
+{ COFF_SECTION_NAME_EXACT_MATCH (".text"), \
+  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
+{ COFF_SECTION_NAME_PARTIAL_MATCH (".idata"), \
+  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
+{ COFF_SECTION_NAME_EXACT_MATCH (".pdata"), \
+  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 2 }, \
+{ COFF_SECTION_NAME_PARTIAL_MATCH (".debug"), \
+  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }, \
+{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi."), \
+  COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
+
+#define PEI_HEADERS
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "coff/aarch64.h"
+#include "coff/internal.h"
+#include "coff/pe.h"
+#include "libcoff.h"
+#include "libpei.h"
+#include "libiberty.h"
+
+/* Make sure we're setting a 64-bit format.  */
+#undef AOUTSZ
+#define AOUTSZ          PEPAOUTSZ
+#define PEAOUTHDR       PEPAOUTHDR
+
+#include "coff-aarch64.c"