| /* ARC-specific header file for PLT support. |
| Copyright (C) 2016-2021 Free Software Foundation, Inc. |
| Contributed by Cupertino Miranda (cmiranda@synopsys.com). |
| |
| 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. */ |
| |
| #ifndef ARC_PLT_H |
| #define ARC_PLT_H |
| |
| /* Instructions appear in memory as a sequence of half-words (16 bit); |
| individual half-words are represented on the target in target byte order. |
| We use 'unsigned short' on the host to represent the PLT templates, |
| and translate to target byte order as we copy to the target. */ |
| typedef uint16_t insn_hword; |
| |
| enum plt_reloc_symbol |
| { |
| LAST_RELOC = 0, |
| |
| SGOT = 1, |
| |
| RELATIVE = (1 << 8), |
| RELATIVE_INSN_32 = (1 << 9), |
| RELATIVE_INSN_24 = (1 << 10), |
| |
| MIDDLE_ENDIAN = (1 << 11) |
| }; |
| |
| #define IS_RELATIVE(S) ((S & (RELATIVE | RELATIVE_INSN_24 | RELATIVE_INSN_32)) != 0) |
| #define IS_INSN_32(S) ((S & RELATIVE_INSN_32) != 0) |
| #define IS_INSN_24(S) ((S & RELATIVE_INSN_24) != 0) |
| #define IS_MIDDLE_ENDIAN(S) ((S & MIDDLE_ENDIAN) != 0) |
| #define SYM_ONLY(S) (S & 0xFF) |
| |
| struct plt_reloc |
| { |
| bfd_vma offset; |
| bfd_vma size; |
| bfd_vma mask; |
| enum plt_reloc_symbol symbol; |
| bfd_vma addend; |
| }; |
| |
| |
| #define PLT_TYPE_START(NAME) NAME, |
| #define PLT_TYPE_END(NAME) |
| #define PLT_ENTRY(...) |
| #define PLT_ELEM(...) |
| #define ENTRY_RELOC(...) |
| #define ELEM_RELOC(...) |
| |
| enum plt_types_enum |
| { |
| PLT_START = -1, |
| #include "arc-plt.def" |
| PLT_MAX |
| }; |
| |
| #undef PLT_TYPE_START |
| #undef PLT_TYPE_END |
| #undef PLT_ENTRY |
| #undef PLT_ELEM |
| #undef ENTRY_RELOC |
| #undef ELEM_RELOC |
| |
| typedef insn_hword insn_hword_array[]; |
| |
| struct plt_version_t |
| { |
| const insn_hword_array *entry; |
| const bfd_vma entry_size; |
| const insn_hword_array *elem; |
| const bfd_vma elem_size; |
| |
| const struct plt_reloc *entry_relocs; |
| const struct plt_reloc *elem_relocs; |
| }; |
| |
| #define PLT_TYPE_START(NAME) \ |
| const insn_hword NAME##_plt_entry[] = { |
| #define PLT_TYPE_END(NAME) }; |
| #define PLT_ENTRY(...) __VA_ARGS__, |
| #define PLT_ELEM(...) |
| #define ENTRY_RELOC(...) |
| #define ELEM_RELOC(...) |
| |
| #include "arc-plt.def" |
| |
| #undef PLT_TYPE_START |
| #undef PLT_TYPE_END |
| #undef PLT_ENTRY |
| #undef PLT_ELEM |
| #undef ENTRY_RELOC |
| #undef ELEM_RELOC |
| |
| #define PLT_TYPE_START(NAME) \ |
| const struct plt_reloc NAME##_plt_entry_relocs[] = { |
| #define PLT_TYPE_END(NAME) \ |
| {0, 0, 0, LAST_RELOC, 0} \ |
| }; |
| #define PLT_ENTRY(...) |
| #define PLT_ELEM(...) |
| #define ENTRY_RELOC(...) { __VA_ARGS__ }, |
| #define ELEM_RELOC(...) |
| |
| #include "arc-plt.def" |
| |
| #undef PLT_TYPE_START |
| #undef PLT_TYPE_END |
| #undef PLT_ENTRY |
| #undef PLT_ELEM |
| #undef ENTRY_RELOC |
| #undef ELEM_RELOC |
| |
| |
| #define PLT_TYPE_START(NAME) \ |
| const insn_hword NAME##_plt_elem[] = { |
| #define PLT_TYPE_END(NAME) }; |
| #define PLT_ENTRY(...) |
| #define PLT_ELEM(...) __VA_ARGS__, |
| #define ENTRY_RELOC(...) |
| #define ELEM_RELOC(...) |
| |
| #include "arc-plt.def" |
| |
| #undef PLT_TYPE_START |
| #undef PLT_TYPE_END |
| #undef PLT_ENTRY |
| #undef PLT_ELEM |
| #undef ENTRY_RELOC |
| #undef ELEM_RELOC |
| |
| #define PLT_TYPE_START(NAME) \ |
| const struct plt_reloc NAME##_plt_elem_relocs[] = { |
| #define PLT_TYPE_END(NAME) \ |
| {0, 0, 0, LAST_RELOC, 0} \ |
| }; |
| #define PLT_ENTRY(...) |
| #define PLT_ELEM(...) |
| #define ENTRY_RELOC(...) |
| #define ELEM_RELOC(...) { __VA_ARGS__ }, |
| |
| #include "arc-plt.def" |
| |
| #undef PLT_TYPE_START |
| #undef PLT_TYPE_END |
| #undef PLT_ENTRY |
| #undef PLT_ELEM |
| #undef ENTRY_RELOC |
| #undef ELEM_RELOC |
| |
| |
| #define PLT_TYPE_START(NAME) \ |
| { \ |
| .entry = &NAME##_plt_entry, \ |
| .entry_size = sizeof (NAME##_plt_entry), \ |
| .elem = &NAME##_plt_elem, \ |
| .elem_size = sizeof (NAME##_plt_elem), \ |
| .entry_relocs = NAME##_plt_entry_relocs, \ |
| .elem_relocs = NAME##_plt_elem_relocs |
| #define PLT_TYPE_END(NAME) }, |
| #define PLT_ENTRY(...) |
| #define PLT_ELEM(...) |
| #define ENTRY_RELOC(...) |
| #define ELEM_RELOC(...) |
| const struct plt_version_t plt_versions[PLT_MAX] = { |
| |
| #include "arc-plt.def" |
| |
| }; |
| #undef PLT_TYPE_START |
| #undef PLT_TYPE_END |
| #undef PLT_ENTRY |
| #undef PLT_ELEM |
| #undef ENTRY_RELOC |
| #undef ELEM_RELOC |
| |
| |
| #endif /* ARC_PLT_H */ |