275 lines
8.3 KiB
C
275 lines
8.3 KiB
C
/* NFP-specific support for 64-bit ELF
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Copyright (C) 2017-2022 Free Software Foundation, Inc.
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Contributed by Francois H. Theron <francois.theron@netronome.com>
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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,
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Boston, MA 02110-1301, USA. */
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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 "elf-bfd.h"
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#include "elf/nfp.h"
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static bfd_reloc_status_type
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elf64_nfp_reloc (bfd * abfd ATTRIBUTE_UNUSED,
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arelent * reloc_entry,
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asymbol * symbol,
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void *data ATTRIBUTE_UNUSED,
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asection * input_section,
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bfd * output_bfd,
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char **error_message ATTRIBUTE_UNUSED);
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/* We don't actually apply any relocations in this toolset
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so we make them all do nothing, but at least display useful
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names.
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Most of these are mainly used by the NFP toolchain to resolve things
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before the final ELF file is created. */
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static reloc_howto_type elf_nfp_howto_table[] =
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{
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HOWTO (R_NFP_NOTYPE, /* Type. */
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0, /* Rightshift. */
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3, /* Size. */
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0, /* Bitsize. */
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false, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont,/* Complain_on_overflow. */
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elf64_nfp_reloc, /* Special_function. */
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"R_NFP_NOTYPE", /* Name. */
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false, /* Partial_inplace. */
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0, /* Src_mask. */
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0, /* Dst_mask. */
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false), /* PCrel_offset. */
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HOWTO (R_NFP_W32LE, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W32LE",
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false, 0, 0, false),
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HOWTO (R_NFP_SRC8_A, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_SRC8_A",
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false, 0, 0, false),
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HOWTO (R_NFP_SRC8_B, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_SRC8_B",
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false, 0, 0, false),
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HOWTO (R_NFP_IMMED8_I, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_IMMED8_I",
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false, 0, 0, false),
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HOWTO (R_NFP_SC, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_SC",
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false, 0, 0, false),
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HOWTO (R_NFP_IMMED_LO16_I_A, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_IMMED_LO16_I_A",
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false, 0, 0, false),
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HOWTO (R_NFP_IMMED_LO16_I_B, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_IMMED_LO16_I_B",
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true, 0, 0, false),
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HOWTO (R_NFP_SRC7_B, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_SRC7_B",
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false, 0, 0, false),
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HOWTO (R_NFP_SRC7_A, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_SRC7_A",
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false, 0, 0, false),
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HOWTO (R_NFP_SRC8_I_B, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_SRC8_I_B",
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false, 0, 0, false),
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HOWTO (R_NFP_SRC8_I_A, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_SRC8_I_A",
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false, 0, 0, false),
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HOWTO (R_NFP_IMMED_HI16_I_A, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_IMMED_HI16_I_A",
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false, 0, 0, false),
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HOWTO (R_NFP_IMMED_HI16_I_B, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_IMMED_HI16_I_B",
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false, 0, 0, false),
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HOWTO (R_NFP_W64LE, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W64LE",
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false, 0, 0, false),
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HOWTO (R_NFP_SH_INFO, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_SH_INFO",
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false, 0, 0, false),
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HOWTO (R_NFP_W32BE, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W32BE",
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false, 0, 0, false),
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HOWTO (R_NFP_W64BE, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W64BE",
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false, 0, 0, false),
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HOWTO (R_NFP_W32_29_24, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W32_29_24",
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false, 0, 0, false),
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HOWTO (R_NFP_W32LE_AND, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W32LE_AND",
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false, 0, 0, false),
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HOWTO (R_NFP_W32BE_AND, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W32BE_AND",
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false, 0, 0, false),
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HOWTO (R_NFP_W32LE_OR, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W32LE_OR",
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false, 0, 0, false),
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HOWTO (R_NFP_W32BE_OR, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W32BE_OR",
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false, 0, 0, false),
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HOWTO (R_NFP_W64LE_AND, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W64LE_AND",
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false, 0, 0, false),
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HOWTO (R_NFP_W64BE_AND, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W64BE_AND",
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false, 0, 0, false),
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HOWTO (R_NFP_W64LE_OR, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W64LE_OR",
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false, 0, 0, false),
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HOWTO (R_NFP_W64BE_OR, 0, 3, 0, false, 0,
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complain_overflow_dont, elf64_nfp_reloc,
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"R_NFP_W64BE_OR",
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false, 0, 0, false)
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};
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static bool
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elf64_nfp_object_p (bfd * abfd)
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{
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/* If the e_machine value is one of the unofficial ones, we convert
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it first and set e_flags accordingly for later consistency. */
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if (elf_elfheader (abfd)->e_machine == E_NFP_MACH_3200)
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{
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elf_elfheader (abfd)->e_machine = EM_NFP;
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elf_elfheader (abfd)->e_flags &= ~EF_NFP_SET_MACH (~0);
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elf_elfheader (abfd)->e_flags |= EF_NFP_SET_MACH (E_NFP_MACH_3200);
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}
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else if (elf_elfheader (abfd)->e_machine == E_NFP_MACH_6000)
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{
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elf_elfheader (abfd)->e_machine = EM_NFP;
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elf_elfheader (abfd)->e_flags &= ~EF_NFP_SET_MACH (~0);
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elf_elfheader (abfd)->e_flags |= EF_NFP_SET_MACH (E_NFP_MACH_6000);
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}
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if (elf_elfheader (abfd)->e_machine == EM_NFP)
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{
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int e_mach = EF_NFP_MACH (elf_elfheader (abfd)->e_flags);
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switch (e_mach)
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{
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case E_NFP_MACH_3200:
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case E_NFP_MACH_6000:
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if (!bfd_default_set_arch_mach (abfd, bfd_arch_nfp, e_mach))
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return false;
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default:
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break;
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}
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}
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return true;
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}
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static bool
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elf64_nfp_section_from_shdr (bfd * abfd,
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Elf_Internal_Shdr * hdr,
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const char *name, int shindex)
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{
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switch (hdr->sh_type)
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{
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case SHT_NFP_INITREG:
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case SHT_NFP_MECONFIG:
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case SHT_NFP_UDEBUG:
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return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
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default:
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return false;
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}
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}
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bfd_reloc_status_type
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elf64_nfp_reloc (bfd * abfd ATTRIBUTE_UNUSED,
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arelent * reloc_entry ATTRIBUTE_UNUSED,
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asymbol * symbol ATTRIBUTE_UNUSED,
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void *data ATTRIBUTE_UNUSED,
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asection * input_section ATTRIBUTE_UNUSED,
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bfd * output_bfd ATTRIBUTE_UNUSED,
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char **error_message ATTRIBUTE_UNUSED)
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{
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return bfd_reloc_ok;
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}
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static bool
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elf64_nfp_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
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arelent * cache_ptr, Elf_Internal_Rela * dst)
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{
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unsigned int r_type;
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r_type = ELF64_R_TYPE (dst->r_info);
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if (r_type >= R_NFP_MAX)
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{
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/* xgettext:c-format */
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_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
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abfd, r_type);
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bfd_set_error (bfd_error_bad_value);
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return false;
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}
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cache_ptr->howto = &elf_nfp_howto_table[r_type];
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return true;
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}
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static reloc_howto_type *
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elf64_nfp_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
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bfd_reloc_code_real_type code ATTRIBUTE_UNUSED)
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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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elf64_nfp_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED,
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const char *r_name ATTRIBUTE_UNUSED)
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{
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return NULL;
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}
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#define ELF_ARCH bfd_arch_nfp
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#define ELF_MACHINE_CODE EM_NFP
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#define ELF_MACHINE_ALT1 E_NFP_MACH_6000
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#define ELF_MACHINE_ALT2 E_NFP_MACH_3200
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#define ELF_MAXPAGESIZE 1
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#define TARGET_LITTLE_NAME "elf64-nfp"
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#define TARGET_LITTLE_SYM nfp_elf64_vec
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#define elf_backend_object_p elf64_nfp_object_p
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#define elf_backend_section_from_shdr elf64_nfp_section_from_shdr
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#define elf_info_to_howto elf64_nfp_info_to_howto
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#define bfd_elf64_bfd_reloc_type_lookup elf64_nfp_reloc_type_lookup
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#define bfd_elf64_bfd_reloc_name_lookup elf64_nfp_reloc_name_lookup
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#include "elf64-target.h"
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