1 /* ARC-specific header file for PLT support. 2 Copyright (C) 2016 Free Software Foundation, Inc. 3 Contributed by Cupertino Miranda (cmiranda@synopsys.com). 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22 #ifndef ARC_PLT_H 23 #define ARC_PLT_H 24 25 #include <stdint.h> 26 27 /* Instructions appear in memory as a sequence of half-words (16 bit); 28 individual half-words are represented on the target in target byte order. 29 We use 'unsigned short' on the host to represent the PLT templates, 30 and translate to target byte order as we copy to the target. */ 31 typedef uint16_t insn_hword; 32 33 enum plt_reloc_symbol 34 { 35 LAST_RELOC = 0, 36 37 SGOT = 1, 38 39 RELATIVE = (1 << 8), 40 RELATIVE_INSN_32 = (1 << 9), 41 RELATIVE_INSN_24 = (1 << 10), 42 43 MIDDLE_ENDIAN = (1 << 11) 44 }; 45 46 #define IS_RELATIVE(S) ((S & (RELATIVE | RELATIVE_INSN_24 | RELATIVE_INSN_32)) != 0) 47 #define IS_INSN_32(S) ((S & RELATIVE_INSN_32) != 0) 48 #define IS_INSN_24(S) ((S & RELATIVE_INSN_24) != 0) 49 #define IS_MIDDLE_ENDIAN(S) ((S & MIDDLE_ENDIAN) != 0) 50 #define SYM_ONLY(S) (S & 0xFF) 51 52 struct plt_reloc 53 { 54 bfd_vma offset; 55 bfd_vma size; 56 bfd_vma mask; 57 enum plt_reloc_symbol symbol; 58 bfd_vma addend; 59 }; 60 61 62 #define PLT_TYPE_START(NAME) NAME, 63 #define PLT_TYPE_END(NAME) 64 #define PLT_ENTRY(...) 65 #define PLT_ELEM(...) 66 #define ENTRY_RELOC(...) 67 #define ELEM_RELOC(...) 68 69 enum plt_types_enum 70 { 71 PLT_START = -1, 72 #include "arc-plt.def" 73 PLT_MAX 74 }; 75 76 #undef PLT_TYPE_START 77 #undef PLT_TYPE_END 78 #undef PLT_ENTRY 79 #undef PLT_ELEM 80 #undef ENTRY_RELOC 81 #undef ELEM_RELOC 82 83 typedef insn_hword insn_hword_array[]; 84 85 struct plt_version_t 86 { 87 const insn_hword_array *entry; 88 const bfd_vma entry_size; 89 const insn_hword_array *elem; 90 const bfd_vma elem_size; 91 92 const struct plt_reloc *entry_relocs; 93 const struct plt_reloc *elem_relocs; 94 }; 95 96 #define PLT_TYPE_START(NAME) \ 97 const insn_hword NAME##_plt_entry[] = { 98 #define PLT_TYPE_END(NAME) }; 99 #define PLT_ENTRY(...) __VA_ARGS__, 100 #define PLT_ELEM(...) 101 #define ENTRY_RELOC(...) 102 #define ELEM_RELOC(...) 103 104 #include "arc-plt.def" 105 106 #undef PLT_TYPE_START 107 #undef PLT_TYPE_END 108 #undef PLT_ENTRY 109 #undef PLT_ELEM 110 #undef ENTRY_RELOC 111 #undef ELEM_RELOC 112 113 #define PLT_TYPE_START(NAME) \ 114 const struct plt_reloc NAME##_plt_entry_relocs[] = { 115 #define PLT_TYPE_END(NAME) \ 116 {0, 0, 0, LAST_RELOC, 0} \ 117 }; 118 #define PLT_ENTRY(...) 119 #define PLT_ELEM(...) 120 #define ENTRY_RELOC(...) { __VA_ARGS__ }, 121 #define ELEM_RELOC(...) 122 123 #include "arc-plt.def" 124 125 #undef PLT_TYPE_START 126 #undef PLT_TYPE_END 127 #undef PLT_ENTRY 128 #undef PLT_ELEM 129 #undef ENTRY_RELOC 130 #undef ELEM_RELOC 131 132 133 #define PLT_TYPE_START(NAME) \ 134 const insn_hword NAME##_plt_elem[] = { 135 #define PLT_TYPE_END(NAME) }; 136 #define PLT_ENTRY(...) 137 #define PLT_ELEM(...) __VA_ARGS__, 138 #define ENTRY_RELOC(...) 139 #define ELEM_RELOC(...) 140 141 #include "arc-plt.def" 142 143 #undef PLT_TYPE_START 144 #undef PLT_TYPE_END 145 #undef PLT_ENTRY 146 #undef PLT_ELEM 147 #undef ENTRY_RELOC 148 #undef ELEM_RELOC 149 150 #define PLT_TYPE_START(NAME) \ 151 const struct plt_reloc NAME##_plt_elem_relocs[] = { 152 #define PLT_TYPE_END(NAME) \ 153 {0, 0, 0, LAST_RELOC, 0} \ 154 }; 155 #define PLT_ENTRY(...) 156 #define PLT_ELEM(...) 157 #define ENTRY_RELOC(...) 158 #define ELEM_RELOC(...) { __VA_ARGS__ }, 159 160 #include "arc-plt.def" 161 162 #undef PLT_TYPE_START 163 #undef PLT_TYPE_END 164 #undef PLT_ENTRY 165 #undef PLT_ELEM 166 #undef ENTRY_RELOC 167 #undef ELEM_RELOC 168 169 170 #define PLT_TYPE_START(NAME) \ 171 { \ 172 .entry = &NAME##_plt_entry, \ 173 .entry_size = sizeof (NAME##_plt_entry), \ 174 .elem = &NAME##_plt_elem, \ 175 .elem_size = sizeof (NAME##_plt_elem), \ 176 .entry_relocs = NAME##_plt_entry_relocs, \ 177 .elem_relocs = NAME##_plt_elem_relocs 178 #define PLT_TYPE_END(NAME) }, 179 #define PLT_ENTRY(...) 180 #define PLT_ELEM(...) 181 #define ENTRY_RELOC(...) 182 #define ELEM_RELOC(...) 183 struct plt_version_t plt_versions[PLT_MAX] = { 184 185 #include "arc-plt.def" 186 187 }; 188 #undef PLT_TYPE_START 189 #undef PLT_TYPE_END 190 #undef PLT_ENTRY 191 #undef PLT_ELEM 192 #undef ENTRY_RELOC 193 #undef ELEM_RELOC 194 195 196 #endif /* ARC_PLT_H */ 197