AArch64: Add support for AArch64 EFI (efi-*-aarch64).

This adds support for efi-*-aarch64 by virtue of adding a new PEI target
pei-aarch64-little.  This is not a full target 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.  This format has been added to elf based aarch64 targets
such that efi images can be made natively on Linux.

However this target is not valid for use with gas but only with objcopy.

With these changes the resulting file is recognized as an efi image by
third party tools:

>  pecli info hello.efi

Metadata
================================================================================
MD5:            598c32a778b0f0deebe977fef8578c4e
SHA1:           4580121edd5cb4dc40f51b28f171fd15250df84c
SHA256:         3154bd7cf42433d1c957f6bf55a17ad8c57ed41b29df2d485703349fd6ff1d5c
Imphash:
Size:           47561 bytes
Type:           PE32+ executable (EFI application) (stripped to external PDB), for MS Windows
Compile Time:   1970-01-01 00:00:00 (UTC - 0x0       )
Entry point:    0x2000 (section .text)

Sections
================================================================================
Name      RWX  VirtSize   VirtAddr   RawAddr   RawSize   Entropy  md5
.text     R-X  0x5bb0     0x2000     0x400     0x5c00      6.39 551fbc264256a3f387de8a891500ae0d
.reloc    R--  0xc        0x8000     0x6000    0x200       0.02 0c45f6d812d079821c1d54c09ab89e1d
.data     RW-  0x1d88     0x9000     0x6200    0x1e00      4.18 5d1137c09f01289dc62bf754f7290db3
.dynamic  RW-  0xf0       0xb000     0x8000    0x200       0.34 5c94ed3206f05a277e6f04fbf131f131
.rela     R--  0xe58      0xc000     0x8200    0x1000      1.87 8b5c6bc30f3acb7ca7bf2e6789d68519
.dynsym   R--  0x138      0xd000     0x9200    0x200       0.96 bdcf5101da51aadc663ca8859f88138c

Imports
================================================================================

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/26206
	* .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/26206
	* NEWS: Add new support.
	* 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/26206
	* coff/aarch64.h: New file.
	* coff/pe.h (IMAGE_FILE_MACHINE_ARM64): New.

1 files changed, 36 insertions, 0 deletions

diff --git a/bfd/libpei.h b/bfd/libpei.h
index 4de0c9f..26589e8 100644
--- a/bfd/libpei.h
+++ b/bfd/libpei.h
@@ -275,6 +275,41 @@
 #define _bfd_XXi_write_codeview_record			_bfd_pepi_write_codeview_record
 #define _bfd_XXi_slurp_codeview_record			_bfd_pepi_slurp_codeview_record
 
+#elif defined COFF_WITH_peAArch64
+
+#define GET_OPTHDR_IMAGE_BASE		 H_GET_64
+#define PUT_OPTHDR_IMAGE_BASE		 H_PUT_64
+#define GET_OPTHDR_SIZE_OF_STACK_RESERVE H_GET_64
+#define PUT_OPTHDR_SIZE_OF_STACK_RESERVE H_PUT_64
+#define GET_OPTHDR_SIZE_OF_STACK_COMMIT	 H_GET_64
+#define PUT_OPTHDR_SIZE_OF_STACK_COMMIT	 H_PUT_64
+#define GET_OPTHDR_SIZE_OF_HEAP_RESERVE	 H_GET_64
+#define PUT_OPTHDR_SIZE_OF_HEAP_RESERVE	 H_PUT_64
+#define GET_OPTHDR_SIZE_OF_HEAP_COMMIT	 H_GET_64
+#define PUT_OPTHDR_SIZE_OF_HEAP_COMMIT	 H_PUT_64
+#define GET_PDATA_ENTRY			 bfd_get_32
+
+#define _bfd_XX_bfd_copy_private_bfd_data_common	_bfd_peAArch64_bfd_copy_private_bfd_data_common
+#define _bfd_XX_bfd_copy_private_section_data		_bfd_peAArch64_bfd_copy_private_section_data
+#define _bfd_XX_get_symbol_info				_bfd_peAArch64_get_symbol_info
+#define _bfd_XX_only_swap_filehdr_out			_bfd_peAArch64_only_swap_filehdr_out
+#define _bfd_XX_print_private_bfd_data_common		_bfd_peAArch64_print_private_bfd_data_common
+#define _bfd_XXi_final_link_postscript			_bfd_peAArch64i_final_link_postscript
+#define _bfd_XXi_only_swap_filehdr_out			_bfd_peAArch64i_only_swap_filehdr_out
+#define _bfd_XXi_swap_aouthdr_in			_bfd_peAArch64i_swap_aouthdr_in
+#define _bfd_XXi_swap_aouthdr_out			_bfd_peAArch64i_swap_aouthdr_out
+#define _bfd_XXi_swap_aux_in				_bfd_peAArch64i_swap_aux_in
+#define _bfd_XXi_swap_aux_out				_bfd_peAArch64i_swap_aux_out
+#define _bfd_XXi_swap_lineno_in				_bfd_peAArch64i_swap_lineno_in
+#define _bfd_XXi_swap_lineno_out			_bfd_peAArch64i_swap_lineno_out
+#define _bfd_XXi_swap_scnhdr_out			_bfd_peAArch64i_swap_scnhdr_out
+#define _bfd_XXi_swap_sym_in				_bfd_peAArch64i_swap_sym_in
+#define _bfd_XXi_swap_sym_out				_bfd_peAArch64i_swap_sym_out
+#define _bfd_XXi_swap_debugdir_in			_bfd_peAArch64i_swap_debugdir_in
+#define _bfd_XXi_swap_debugdir_out			_bfd_peAArch64i_swap_debugdir_out
+#define _bfd_XXi_write_codeview_record			_bfd_peAArch64i_write_codeview_record
+#define _bfd_XXi_slurp_codeview_record			_bfd_peAArch64i_slurp_codeview_record
+
 #else /* !COFF_WITH_pep */
 
 #define GET_OPTHDR_IMAGE_BASE H_GET_32
@@ -369,5 +404,6 @@ bool _bfd_XX_bfd_copy_private_section_data
 bool _bfd_pe_print_ce_compressed_pdata (bfd *, void *);
 bool _bfd_pe64_print_ce_compressed_pdata (bfd *, void *);
 bool _bfd_pex64_print_ce_compressed_pdata (bfd *, void *);
+bool _bfd_peAArch64_print_ce_compressed_pdata (bfd *, void *);
 bool _bfd_pep_print_ce_compressed_pdata (bfd *, void *);