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195 lines
4.5 KiB
C
195 lines
4.5 KiB
C
/* ARC-specific header file for PLT support.
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Copyright (C) 2016-2023 Free Software Foundation, Inc.
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Contributed by Cupertino Miranda (cmiranda@synopsys.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, Boston,
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MA 02110-1301, USA. */
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#ifndef ARC_PLT_H
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#define ARC_PLT_H
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/* Instructions appear in memory as a sequence of half-words (16 bit);
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individual half-words are represented on the target in target byte order.
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We use 'unsigned short' on the host to represent the PLT templates,
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and translate to target byte order as we copy to the target. */
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typedef uint16_t insn_hword;
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enum plt_reloc_symbol
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{
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LAST_RELOC = 0,
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SGOT = 1,
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RELATIVE = (1 << 8),
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RELATIVE_INSN_32 = (1 << 9),
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RELATIVE_INSN_24 = (1 << 10),
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MIDDLE_ENDIAN = (1 << 11)
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};
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#define IS_RELATIVE(S) ((S & (RELATIVE | RELATIVE_INSN_24 | RELATIVE_INSN_32)) != 0)
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#define IS_INSN_32(S) ((S & RELATIVE_INSN_32) != 0)
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#define IS_INSN_24(S) ((S & RELATIVE_INSN_24) != 0)
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#define IS_MIDDLE_ENDIAN(S) ((S & MIDDLE_ENDIAN) != 0)
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#define SYM_ONLY(S) (S & 0xFF)
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struct plt_reloc
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{
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bfd_vma offset;
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bfd_vma size;
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bfd_vma mask;
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enum plt_reloc_symbol symbol;
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bfd_vma addend;
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};
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#define PLT_TYPE_START(NAME) NAME,
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#define PLT_TYPE_END(NAME)
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#define PLT_ENTRY(...)
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#define PLT_ELEM(...)
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#define ENTRY_RELOC(...)
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#define ELEM_RELOC(...)
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enum plt_types_enum
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{
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PLT_START = -1,
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#include "arc-plt.def"
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PLT_MAX
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};
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#undef PLT_TYPE_START
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#undef PLT_TYPE_END
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#undef PLT_ENTRY
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#undef PLT_ELEM
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#undef ENTRY_RELOC
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#undef ELEM_RELOC
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typedef insn_hword insn_hword_array[];
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struct plt_version_t
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{
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const insn_hword_array *entry;
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const bfd_vma entry_size;
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const insn_hword_array *elem;
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const bfd_vma elem_size;
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const struct plt_reloc *entry_relocs;
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const struct plt_reloc *elem_relocs;
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};
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#define PLT_TYPE_START(NAME) \
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const insn_hword NAME##_plt_entry[] = {
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#define PLT_TYPE_END(NAME) };
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#define PLT_ENTRY(...) __VA_ARGS__,
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#define PLT_ELEM(...)
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#define ENTRY_RELOC(...)
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#define ELEM_RELOC(...)
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#include "arc-plt.def"
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#undef PLT_TYPE_START
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#undef PLT_TYPE_END
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#undef PLT_ENTRY
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#undef PLT_ELEM
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#undef ENTRY_RELOC
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#undef ELEM_RELOC
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#define PLT_TYPE_START(NAME) \
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const struct plt_reloc NAME##_plt_entry_relocs[] = {
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#define PLT_TYPE_END(NAME) \
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{0, 0, 0, LAST_RELOC, 0} \
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};
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#define PLT_ENTRY(...)
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#define PLT_ELEM(...)
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#define ENTRY_RELOC(...) { __VA_ARGS__ },
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#define ELEM_RELOC(...)
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#include "arc-plt.def"
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#undef PLT_TYPE_START
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#undef PLT_TYPE_END
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#undef PLT_ENTRY
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#undef PLT_ELEM
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#undef ENTRY_RELOC
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#undef ELEM_RELOC
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#define PLT_TYPE_START(NAME) \
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const insn_hword NAME##_plt_elem[] = {
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#define PLT_TYPE_END(NAME) };
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#define PLT_ENTRY(...)
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#define PLT_ELEM(...) __VA_ARGS__,
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#define ENTRY_RELOC(...)
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#define ELEM_RELOC(...)
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#include "arc-plt.def"
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#undef PLT_TYPE_START
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#undef PLT_TYPE_END
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#undef PLT_ENTRY
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#undef PLT_ELEM
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#undef ENTRY_RELOC
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#undef ELEM_RELOC
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#define PLT_TYPE_START(NAME) \
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const struct plt_reloc NAME##_plt_elem_relocs[] = {
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#define PLT_TYPE_END(NAME) \
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{0, 0, 0, LAST_RELOC, 0} \
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};
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#define PLT_ENTRY(...)
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#define PLT_ELEM(...)
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#define ENTRY_RELOC(...)
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#define ELEM_RELOC(...) { __VA_ARGS__ },
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#include "arc-plt.def"
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#undef PLT_TYPE_START
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#undef PLT_TYPE_END
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#undef PLT_ENTRY
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#undef PLT_ELEM
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#undef ENTRY_RELOC
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#undef ELEM_RELOC
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#define PLT_TYPE_START(NAME) \
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{ \
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.entry = &NAME##_plt_entry, \
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.entry_size = sizeof (NAME##_plt_entry), \
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.elem = &NAME##_plt_elem, \
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.elem_size = sizeof (NAME##_plt_elem), \
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.entry_relocs = NAME##_plt_entry_relocs, \
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.elem_relocs = NAME##_plt_elem_relocs
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#define PLT_TYPE_END(NAME) },
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#define PLT_ENTRY(...)
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#define PLT_ELEM(...)
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#define ENTRY_RELOC(...)
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#define ELEM_RELOC(...)
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const struct plt_version_t plt_versions[PLT_MAX] = {
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#include "arc-plt.def"
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};
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#undef PLT_TYPE_START
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#undef PLT_TYPE_END
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#undef PLT_ENTRY
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#undef PLT_ELEM
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#undef ENTRY_RELOC
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#undef ELEM_RELOC
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#endif /* ARC_PLT_H */
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