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c60b380679
Allows aarch64-pe to be targeted natively, not having to use objcopy to convert it from ELF to PE. Based on initial work by Jedidiah Thompson Co-authored-by: Jedidiah Thompson <wej22007@outlook.com> Co-authored-by: Zac Walker <zac.walker@linaro.org>
287 lines
8.2 KiB
C
287 lines
8.2 KiB
C
/* BFD back-end for AArch64 COFF files.
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Copyright (C) 2021-2022 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef COFF_WITH_peAArch64
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#define COFF_WITH_peAArch64
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#endif
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/* Note we have to make sure not to include headers twice.
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Not all headers are wrapped in #ifdef guards, so we define
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PEI_HEADERS to prevent double including here. */
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#ifndef PEI_HEADERS
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "coff/aarch64.h"
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#include "coff/internal.h"
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#include "coff/pe.h"
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#include "libcoff.h"
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#include "libiberty.h"
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#endif
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#include "libcoff.h"
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/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
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#define MINUS_ONE (~ (bfd_vma) 0)
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static const reloc_howto_type arm64_reloc_howto_64 = HOWTO(IMAGE_REL_ARM64_ADDR64, 0, 8, 64, false, 0,
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complain_overflow_bitfield,
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NULL, "64",
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false, MINUS_ONE, MINUS_ONE, false);
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static const reloc_howto_type arm64_reloc_howto_32 = HOWTO (IMAGE_REL_ARM64_ADDR32, 0, 4, 32, false, 0,
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complain_overflow_bitfield,
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NULL, "32",
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false, 0xffffffff, 0xffffffff, false);
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static const reloc_howto_type arm64_reloc_howto_32_pcrel = HOWTO (IMAGE_REL_ARM64_REL32, 0, 4, 32, true, 0,
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complain_overflow_bitfield,
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NULL, "DISP32",
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false, 0xffffffff, 0xffffffff, true);
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static const reloc_howto_type arm64_reloc_howto_branch26 = HOWTO (IMAGE_REL_ARM64_BRANCH26, 0, 4, 26, true, 0,
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complain_overflow_bitfield,
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NULL, "BRANCH26",
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false, 0x03ffffff, 0x03ffffff, true);
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static const reloc_howto_type arm64_reloc_howto_page21 = HOWTO (IMAGE_REL_ARM64_PAGEBASE_REL21, 12, 4, 21, true, 0,
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complain_overflow_signed,
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NULL, "PAGE21",
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false, 0x1fffff, 0x1fffff, false);
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static const reloc_howto_type arm64_reloc_howto_lo21 = HOWTO (IMAGE_REL_ARM64_REL21, 0, 4, 21, true, 0,
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complain_overflow_signed,
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NULL, "LO21",
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false, 0x1fffff, 0x1fffff, true);
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static const reloc_howto_type arm64_reloc_howto_pgoff12 = HOWTO (IMAGE_REL_ARM64_PAGEOFFSET_12L, 1, 4, 12, true, 0,
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complain_overflow_signed,
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NULL, "PGOFF12",
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false, 0xffe, 0xffe, true);
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static const reloc_howto_type arm64_reloc_howto_branch19 = HOWTO (IMAGE_REL_ARM64_BRANCH19, 2, 4, 19, true, 0,
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complain_overflow_signed,
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NULL, "BRANCH19",
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false, 0x7ffff, 0x7ffff, true);
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static const reloc_howto_type* const arm64_howto_table[] = {
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&arm64_reloc_howto_64,
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&arm64_reloc_howto_32,
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&arm64_reloc_howto_32_pcrel,
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&arm64_reloc_howto_branch26,
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&arm64_reloc_howto_page21,
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&arm64_reloc_howto_lo21,
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&arm64_reloc_howto_pgoff12,
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&arm64_reloc_howto_branch19
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};
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#ifndef NUM_ELEM
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#define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0]))
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#endif
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#define NUM_RELOCS NUM_ELEM (arm64_howto_table)
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#define coff_bfd_reloc_type_lookup coff_aarch64_reloc_type_lookup
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#define coff_bfd_reloc_name_lookup coff_aarch64_reloc_name_lookup
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static reloc_howto_type *
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coff_aarch64_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
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{
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switch (code)
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{
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case BFD_RELOC_64:
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return &arm64_reloc_howto_64;
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case BFD_RELOC_32:
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return &arm64_reloc_howto_32;
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case BFD_RELOC_32_PCREL:
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return &arm64_reloc_howto_32_pcrel;
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case BFD_RELOC_AARCH64_CALL26:
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case BFD_RELOC_AARCH64_JUMP26:
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return &arm64_reloc_howto_branch26;
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case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
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return &arm64_reloc_howto_page21;
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case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
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return &arm64_reloc_howto_lo21;
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case BFD_RELOC_AARCH64_LDST16_LO12:
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return &arm64_reloc_howto_pgoff12;
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case BFD_RELOC_AARCH64_BRANCH19:
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return &arm64_reloc_howto_branch19;
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default:
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BFD_FAIL ();
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return NULL;
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}
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return NULL;
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}
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static reloc_howto_type *
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coff_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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const char *r_name)
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{
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unsigned int i;
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for (i = 0; i < NUM_RELOCS; i++)
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if (arm64_howto_table[i]->name != NULL
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&& strcasecmp (arm64_howto_table[i]->name, r_name) == 0)
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return arm64_howto_table[i];
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return NULL;
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}
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2
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#define COFF_PAGE_SIZE 0x1000
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static reloc_howto_type *
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coff_aarch64_rtype_lookup (unsigned int code)
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{
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switch (code)
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{
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case IMAGE_REL_ARM64_ADDR64:
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return &arm64_reloc_howto_64;
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case IMAGE_REL_ARM64_ADDR32:
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return &arm64_reloc_howto_32;
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case IMAGE_REL_ARM64_REL32:
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return &arm64_reloc_howto_32_pcrel;
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case IMAGE_REL_ARM64_BRANCH26:
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return &arm64_reloc_howto_branch26;
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case IMAGE_REL_ARM64_PAGEBASE_REL21:
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return &arm64_reloc_howto_page21;
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case IMAGE_REL_ARM64_REL21:
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return &arm64_reloc_howto_lo21;
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case IMAGE_REL_ARM64_PAGEOFFSET_12L:
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return &arm64_reloc_howto_pgoff12;
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case IMAGE_REL_ARM64_BRANCH19:
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return &arm64_reloc_howto_branch19;
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default:
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BFD_FAIL ();
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return NULL;
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}
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return NULL;
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}
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#define RTYPE2HOWTO(cache_ptr, dst) \
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((cache_ptr)->howto = coff_aarch64_rtype_lookup((dst)->r_type))
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#define SELECT_RELOC(x,howto) { (x).r_type = (howto)->type; }
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#ifndef bfd_pe_print_pdata
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#define bfd_pe_print_pdata NULL
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#endif
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/* Handle include/coff/aarch64.h external_reloc. */
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#define SWAP_IN_RELOC_OFFSET H_GET_32
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#define SWAP_OUT_RELOC_OFFSET H_PUT_32
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/* Return TRUE if this relocation should
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appear in the output .reloc section. */
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static bool
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in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
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reloc_howto_type * howto)
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{
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return !howto->pc_relative;
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}
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#include "coffcode.h"
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/* Target vectors. */
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const bfd_target
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#ifdef TARGET_SYM
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TARGET_SYM =
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#else
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# error "target symbol name not specified"
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#endif
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{
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#ifdef TARGET_NAME
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TARGET_NAME,
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#else
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# error "target name not specified"
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#endif
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bfd_target_coff_flavour,
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BFD_ENDIAN_LITTLE, /* Data byte order is little. */
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BFD_ENDIAN_LITTLE, /* Header byte order is little. */
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(HAS_RELOC | EXEC_P /* Object flags. */
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| HAS_LINENO | HAS_DEBUG
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| HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */
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#if defined(COFF_WITH_PE)
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| SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
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#endif
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| SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
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#ifdef TARGET_UNDERSCORE
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TARGET_UNDERSCORE, /* Leading underscore. */
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#else
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0, /* Leading underscore. */
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#endif
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'/', /* Ar_pad_char. */
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15, /* Ar_max_namelen. */
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0, /* match priority. */
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TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
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/* Data conversion functions. */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */
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/* Header conversion functions. */
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bfd_getl64, bfd_getl_signed_64, bfd_putl64,
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bfd_getl32, bfd_getl_signed_32, bfd_putl32,
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bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs. */
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/* Note that we allow an object file to be treated as a core file as well. */
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{ /* bfd_check_format. */
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_bfd_dummy_target,
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coff_object_p,
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bfd_generic_archive_p,
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coff_object_p
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},
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{ /* bfd_set_format. */
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_bfd_bool_bfd_false_error,
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coff_mkobject,
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_bfd_generic_mkarchive,
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_bfd_bool_bfd_false_error
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},
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{ /* bfd_write_contents. */
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_bfd_bool_bfd_false_error,
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coff_write_object_contents,
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_bfd_write_archive_contents,
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_bfd_bool_bfd_false_error
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},
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BFD_JUMP_TABLE_GENERIC (coff),
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BFD_JUMP_TABLE_COPY (coff),
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BFD_JUMP_TABLE_CORE (_bfd_nocore),
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BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
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BFD_JUMP_TABLE_SYMBOLS (coff),
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BFD_JUMP_TABLE_RELOCS (coff),
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BFD_JUMP_TABLE_WRITE (coff),
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BFD_JUMP_TABLE_LINK (coff),
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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NULL,
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COFF_SWAP_TABLE
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};
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