1/* NDS32 ELF support for BFD. 2 Copyright (C) 2012-2022 Free Software Foundation, Inc. 3 Contributed by Andes Technology Corporation. 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, MA 20 02110-1301, USA. */ 21 22#ifndef _ELF_NDS32_H 23#define _ELF_NDS32_H 24 25#include "elf/reloc-macros.h" 26 27START_RELOC_NUMBERS (elf_nds32_reloc_type) 28 /* These used for relocations. */ 29 RELOC_NUMBER (R_NDS32_NONE, 0) 30 /* REL relocations. */ 31 RELOC_NUMBER (R_NDS32_16, 1) 32 RELOC_NUMBER (R_NDS32_32, 2) 33 RELOC_NUMBER (R_NDS32_20, 3) 34 RELOC_NUMBER (R_NDS32_9_PCREL, 4) 35 RELOC_NUMBER (R_NDS32_15_PCREL, 5) 36 RELOC_NUMBER (R_NDS32_17_PCREL, 6) 37 RELOC_NUMBER (R_NDS32_25_PCREL, 7) 38 RELOC_NUMBER (R_NDS32_HI20, 8) 39 RELOC_NUMBER (R_NDS32_LO12S3, 9) 40 RELOC_NUMBER (R_NDS32_LO12S2, 10) 41 RELOC_NUMBER (R_NDS32_LO12S1, 11) 42 RELOC_NUMBER (R_NDS32_LO12S0, 12) 43 RELOC_NUMBER (R_NDS32_SDA15S3, 13) 44 RELOC_NUMBER (R_NDS32_SDA15S2, 14) 45 RELOC_NUMBER (R_NDS32_SDA15S1, 15) 46 RELOC_NUMBER (R_NDS32_SDA15S0, 16) 47 RELOC_NUMBER (R_NDS32_GNU_VTINHERIT, 17) 48 RELOC_NUMBER (R_NDS32_GNU_VTENTRY, 18) 49 /* RELA relocations. */ 50 RELOC_NUMBER (R_NDS32_16_RELA, 19) 51 RELOC_NUMBER (R_NDS32_32_RELA, 20) 52 RELOC_NUMBER (R_NDS32_20_RELA, 21) 53 RELOC_NUMBER (R_NDS32_9_PCREL_RELA, 22) 54 RELOC_NUMBER (R_NDS32_15_PCREL_RELA, 23) 55 RELOC_NUMBER (R_NDS32_17_PCREL_RELA, 24) 56 RELOC_NUMBER (R_NDS32_25_PCREL_RELA, 25) 57 RELOC_NUMBER (R_NDS32_HI20_RELA, 26) 58 RELOC_NUMBER (R_NDS32_LO12S3_RELA, 27) 59 RELOC_NUMBER (R_NDS32_LO12S2_RELA, 28) 60 RELOC_NUMBER (R_NDS32_LO12S1_RELA, 29) 61 RELOC_NUMBER (R_NDS32_LO12S0_RELA, 30) 62 RELOC_NUMBER (R_NDS32_SDA15S3_RELA, 31) 63 RELOC_NUMBER (R_NDS32_SDA15S2_RELA, 32) 64 RELOC_NUMBER (R_NDS32_SDA15S1_RELA, 33) 65 RELOC_NUMBER (R_NDS32_SDA15S0_RELA, 34) 66 RELOC_NUMBER (R_NDS32_RELA_GNU_VTINHERIT, 35) 67 RELOC_NUMBER (R_NDS32_RELA_GNU_VTENTRY, 36) 68 /* GOT and PLT. */ 69 RELOC_NUMBER (R_NDS32_GOT20, 37) 70 RELOC_NUMBER (R_NDS32_25_PLTREL, 38) 71 RELOC_NUMBER (R_NDS32_COPY, 39) 72 RELOC_NUMBER (R_NDS32_GLOB_DAT, 40) 73 RELOC_NUMBER (R_NDS32_JMP_SLOT, 41) 74 RELOC_NUMBER (R_NDS32_RELATIVE, 42) 75 RELOC_NUMBER (R_NDS32_GOTOFF, 43) 76 RELOC_NUMBER (R_NDS32_GOTPC20, 44) 77 RELOC_NUMBER (R_NDS32_GOT_HI20, 45) 78 RELOC_NUMBER (R_NDS32_GOT_LO12, 46) 79 RELOC_NUMBER (R_NDS32_GOTPC_HI20, 47) 80 RELOC_NUMBER (R_NDS32_GOTPC_LO12, 48) 81 RELOC_NUMBER (R_NDS32_GOTOFF_HI20, 49) 82 RELOC_NUMBER (R_NDS32_GOTOFF_LO12, 50) 83 /* 32_to_16 relaxations. */ 84 RELOC_NUMBER (R_NDS32_INSN16, 51) 85 /* Alignment tag. */ 86 RELOC_NUMBER (R_NDS32_LABEL, 52) 87 RELOC_NUMBER (R_NDS32_LONGCALL1, 53) /* This is obsoleted. */ 88 RELOC_NUMBER (R_NDS32_LONGCALL2, 54) /* This is obsoleted. */ 89 RELOC_NUMBER (R_NDS32_LONGCALL3, 55) /* This is obsoleted. */ 90 RELOC_NUMBER (R_NDS32_LONGJUMP1, 56) /* This is obsoleted. */ 91 RELOC_NUMBER (R_NDS32_LONGJUMP2, 57) /* This is obsoleted. */ 92 RELOC_NUMBER (R_NDS32_LONGJUMP3, 58) /* This is obsoleted. */ 93 RELOC_NUMBER (R_NDS32_LOADSTORE, 59) /* This is obsoleted. */ 94 RELOC_NUMBER (R_NDS32_9_FIXED_RELA, 60) 95 RELOC_NUMBER (R_NDS32_15_FIXED_RELA, 61) 96 RELOC_NUMBER (R_NDS32_17_FIXED_RELA, 62) 97 RELOC_NUMBER (R_NDS32_25_FIXED_RELA, 63) 98 RELOC_NUMBER (R_NDS32_PLTREL_HI20, 64) /* This is obsoleted. */ 99 RELOC_NUMBER (R_NDS32_PLTREL_LO12, 65) /* This is obsoleted. */ 100 RELOC_NUMBER (R_NDS32_PLT_GOTREL_HI20, 66) 101 RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO12, 67) 102 RELOC_NUMBER (R_NDS32_SDA12S2_DP_RELA, 68) 103 RELOC_NUMBER (R_NDS32_SDA12S2_SP_RELA, 69) 104 RELOC_NUMBER (R_NDS32_LO12S2_DP_RELA, 70) 105 RELOC_NUMBER (R_NDS32_LO12S2_SP_RELA, 71) 106 RELOC_NUMBER (R_NDS32_LO12S0_ORI_RELA, 72) 107 RELOC_NUMBER (R_NDS32_SDA16S3_RELA, 73) 108 RELOC_NUMBER (R_NDS32_SDA17S2_RELA, 74) 109 RELOC_NUMBER (R_NDS32_SDA18S1_RELA, 75) 110 RELOC_NUMBER (R_NDS32_SDA19S0_RELA, 76) 111 RELOC_NUMBER (R_NDS32_DWARF2_OP1_RELA, 77) /* This is obsoleted. */ 112 RELOC_NUMBER (R_NDS32_DWARF2_OP2_RELA, 78) /* This is obsoleted. */ 113 RELOC_NUMBER (R_NDS32_DWARF2_LEB_RELA, 79) /* This is obsoleted. */ 114 RELOC_NUMBER (R_NDS32_UPDATE_TA_RELA, 80) /* This is obsoleted. */ 115 RELOC_NUMBER (R_NDS32_9_PLTREL, 81) 116 RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO20, 82) 117 RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO15, 83) 118 RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO19, 84) 119 RELOC_NUMBER (R_NDS32_GOT_LO15, 85) 120 RELOC_NUMBER (R_NDS32_GOT_LO19, 86) 121 RELOC_NUMBER (R_NDS32_GOTOFF_LO15, 87) 122 RELOC_NUMBER (R_NDS32_GOTOFF_LO19, 88) 123 RELOC_NUMBER (R_NDS32_GOT15S2_RELA, 89) 124 RELOC_NUMBER (R_NDS32_GOT17S2_RELA, 90) 125 RELOC_NUMBER (R_NDS32_5_RELA, 91) 126 RELOC_NUMBER (R_NDS32_10_UPCREL_RELA, 92) /* This is obsoleted. */ 127 RELOC_NUMBER (R_NDS32_SDA_FP7U2_RELA, 93) 128 RELOC_NUMBER (R_NDS32_WORD_9_PCREL_RELA, 94) 129 RELOC_NUMBER (R_NDS32_25_ABS_RELA, 95) 130 RELOC_NUMBER (R_NDS32_17IFC_PCREL_RELA, 96) /* This is obsoleted. */ 131 RELOC_NUMBER (R_NDS32_10IFCU_PCREL_RELA, 97) /* This is obsoleted. */ 132 /* TLS support. */ 133 RELOC_NUMBER (R_NDS32_TLS_LE_HI20, 98) 134 RELOC_NUMBER (R_NDS32_TLS_LE_LO12, 99) 135 RELOC_NUMBER (R_NDS32_TLS_IE_HI20, 100) 136 RELOC_NUMBER (R_NDS32_TLS_IE_LO12S2, 101) 137 RELOC_NUMBER (R_NDS32_TLS_TPOFF, 102) 138 RELOC_NUMBER (R_NDS32_TLS_LE_20, 103) 139 RELOC_NUMBER (R_NDS32_TLS_LE_15S0, 104) 140 RELOC_NUMBER (R_NDS32_TLS_LE_15S1, 105) 141 RELOC_NUMBER (R_NDS32_TLS_LE_15S2, 106) 142 RELOC_NUMBER (R_NDS32_LONGCALL4, 107) 143 RELOC_NUMBER (R_NDS32_LONGCALL5, 108) 144 RELOC_NUMBER (R_NDS32_LONGCALL6, 109) 145 RELOC_NUMBER (R_NDS32_LONGJUMP4, 110) 146 RELOC_NUMBER (R_NDS32_LONGJUMP5, 111) 147 RELOC_NUMBER (R_NDS32_LONGJUMP6, 112) 148 RELOC_NUMBER (R_NDS32_LONGJUMP7, 113) 149 /* Reserved numbers: 114. */ 150 /* TLS support */ 151 RELOC_NUMBER (R_NDS32_TLS_IE_LO12, 115) 152 RELOC_NUMBER (R_NDS32_TLS_IEGP_HI20, 116) 153 RELOC_NUMBER (R_NDS32_TLS_IEGP_LO12, 117) 154 RELOC_NUMBER (R_NDS32_TLS_IEGP_LO12S2, 118) 155 RELOC_NUMBER (R_NDS32_TLS_DESC, 119) 156 RELOC_NUMBER (R_NDS32_TLS_DESC_HI20, 120) 157 RELOC_NUMBER (R_NDS32_TLS_DESC_LO12, 121) 158 RELOC_NUMBER (R_NDS32_TLS_DESC_20, 122) 159 RELOC_NUMBER (R_NDS32_TLS_DESC_SDA17S2, 123) 160 /* Reserved numbers: 124-191. */ 161 162 /* These used only for relaxations */ 163 RELOC_NUMBER (R_NDS32_RELAX_ENTRY, 192) 164 RELOC_NUMBER (R_NDS32_GOT_SUFF, 193) 165 RELOC_NUMBER (R_NDS32_GOTOFF_SUFF, 194) 166 RELOC_NUMBER (R_NDS32_PLT_GOT_SUFF, 195) 167 RELOC_NUMBER (R_NDS32_MULCALL_SUFF, 196) /* This is obsoleted. */ 168 RELOC_NUMBER (R_NDS32_PTR, 197) 169 RELOC_NUMBER (R_NDS32_PTR_COUNT, 198) 170 RELOC_NUMBER (R_NDS32_PTR_RESOLVED, 199) 171 RELOC_NUMBER (R_NDS32_PLTBLOCK, 200) /* This is obsoleted. */ 172 RELOC_NUMBER (R_NDS32_RELAX_REGION_BEGIN, 201) 173 RELOC_NUMBER (R_NDS32_RELAX_REGION_END, 202) 174 RELOC_NUMBER (R_NDS32_MINUEND, 203) 175 RELOC_NUMBER (R_NDS32_SUBTRAHEND, 204) 176 RELOC_NUMBER (R_NDS32_DIFF8, 205) 177 RELOC_NUMBER (R_NDS32_DIFF16, 206) 178 RELOC_NUMBER (R_NDS32_DIFF32, 207) 179 RELOC_NUMBER (R_NDS32_DIFF_ULEB128, 208) 180 RELOC_NUMBER (R_NDS32_DATA, 209) 181 RELOC_NUMBER (R_NDS32_TRAN, 210) 182 /* TLS support */ 183 RELOC_NUMBER (R_NDS32_TLS_LE_ADD, 211) 184 RELOC_NUMBER (R_NDS32_TLS_LE_LS, 212) 185 RELOC_NUMBER (R_NDS32_EMPTY, 213) 186 RELOC_NUMBER (R_NDS32_TLS_DESC_ADD, 214) 187 RELOC_NUMBER (R_NDS32_TLS_DESC_FUNC, 215) 188 RELOC_NUMBER (R_NDS32_TLS_DESC_CALL, 216) 189 RELOC_NUMBER (R_NDS32_TLS_DESC_MEM, 217) 190 RELOC_NUMBER (R_NDS32_RELAX_REMOVE, 218) 191 RELOC_NUMBER (R_NDS32_RELAX_GROUP, 219) 192 RELOC_NUMBER (R_NDS32_TLS_IEGP_LW, 220) 193 RELOC_NUMBER (R_NDS32_LSI, 221) 194 /* Reserved numbers: 222-255. */ 195 196END_RELOC_NUMBERS (R_NDS32_max) 197 198/* Processor specific section indices. These sections do not actually 199 exist. Symbols with a st_shndx field corresponding to one of these 200 values have a special meaning. */ 201 202/* Processor specific flags for the ELF header e_flags field. 203 204 31 28 27 8 7 4 3 0 205 --------------------------------------------- 206 | ARCH | CONFUGURAION FIELD | ABI | ELF_VER | 207 --------------------------------------------- */ 208 209/* Architechure definition. */ 210 211/* 4-bit (b31-b28) nds32 architecture field. 212 We can have up to 15 architectures; 0000 is for unknown. */ 213#define EF_NDS_ARCH 0xF0000000 214#define EF_NDS_ARCH_SHIFT 28 215/* There could be more architectures. For now, only n1 and n1h. */ 216#define E_NDS_ARCH_STAR_RESERVED 0x00000000 217#define E_NDS_ARCH_STAR_V1_0 0x10000000 218#define E_NDS_ARCH_STAR_V2_0 0x20000000 219#define E_NDS_ARCH_STAR_V3_0 0x30000000 220#define E_NDS_ARCH_STAR_V3_M 0x40000000 221#define E_NDS_ARCH_STAR_V0_9 0x90000000 /* Obsoleted. */ 222/* n1 code. */ 223#define E_N1_ARCH E_NDS_ARCH_STAR_V0_9 224/* n1h code. */ 225#define E_N1H_ARCH E_NDS_ARCH_STAR_V1_0 226 227 228/* Configuration field definitioans. */ 229#define EF_NDS_INST 0x0FFFFF00 230 231/* E_NDS_ARCH_STAR_V1_0 configuration fields. 232 233 E_NDS_ARCH_STAR_V2_0 configuration fields. 234 These are discarded in v2. 235 * E_NDS32_HAS_MFUSR_PC_INST 0x00000100 236 * E_NDS32_HAS_DIV_INST 0x00002000 237 * E_NDS32_HAS_NO_MAC_INST 0x00100000 238 These are added in v2. 239 * E_NDS32_HAS_DIV_DX_INST 0x00002000 240 * E_NDS32_HAS_MAC_DX_INST 0x00100000 */ 241 242/* MFUSR rt, PC and correct ISYNC, MSYNC instructions. 243 Old N1213HC has no such instructions. */ 244#define E_NDS32_HAS_MFUSR_PC_INST 0x00000100 /* Reclaimed. */ 245/* C/C++ performance extension instructions. */ 246#define E_NDS32_HAS_EXT_INST 0x00000200 247/* Performance extension set II instructions. */ 248#define E_NDS32_HAS_EXT2_INST 0x00000400 249/* Single precision Floating point processor instructions. */ 250#define E_NDS32_HAS_FPU_INST 0x00000800 251/* Audio instructions with 32-bit audio dx.lo register. */ 252#define E_NDS32_HAS_AUDIO_INST 0x00001000 253/* DIV instructions. */ 254#define E_NDS32_HAS_DIV_INST 0x00002000 /* Reclaimed. */ 255/* DIV instructions using d0/d1. */ 256#define E_NDS32_HAS_DIV_DX_INST 0x00002000 /* v2. */ 257/* 16-bit instructions. */ 258#define E_NDS32_HAS_16BIT_INST 0x00004000 /* Reclaimed. */ 259/* String operation instructions. */ 260#define E_NDS32_HAS_STRING_INST 0x00008000 261/* Reduced register file. */ 262#define E_NDS32_HAS_REDUCED_REGS 0x00010000 263/* Video instructions. */ 264#define E_NDS32_HAS_VIDEO_INST 0x00020000 /* Reclaimed. */ 265#define E_NDS32_HAS_SATURATION_INST 0x00020000 /* v3, ELF 1.4. */ 266/* Encription instructions. */ 267#define E_NDS32_HAS_ENCRIPT_INST 0x00040000 268/* Doulbe Precision Floating point processor instructions. */ 269#define E_NDS32_HAS_FPU_DP_INST 0x00080000 270/* No MAC instruction used. */ 271#define E_NDS32_HAS_NO_MAC_INST 0x00100000 /* Reclaimed when V2/V3. */ 272/* MAC instruction using d0/d1. */ 273#define E_NDS32_HAS_MAC_DX_INST 0x00100000 /* v2. */ 274/* L2 cache instruction. */ 275#define E_NDS32_HAS_L2C_INST 0x00200000 276/* FPU registers configuration when FPU SP/DP presents; 0x00c00000. */ 277#define E_NDS32_FPU_REG_CONF_SHIFT 22 278#define E_NDS32_FPU_REG_CONF (0x3 << E_NDS32_FPU_REG_CONF_SHIFT) 279#define E_NDS32_FPU_REG_8SP_4DP 0x0 280#define E_NDS32_FPU_REG_16SP_8DP 0x1 281#define E_NDS32_FPU_REG_32SP_16DP 0x2 282#define E_NDS32_FPU_REG_32SP_32DP 0x3 283/* FPU MAC instruction used. */ 284#define E_NDS32_HAS_FPU_MAC_INST 0x01000000 285/* DSP extension. */ 286#define E_NDS32_HAS_DSP_INST 0x02000000 287/* PIC enabled. */ 288#define E_NDS32_HAS_PIC 0x04000000 289/* Use custom section. */ 290#define E_NDS32_HAS_CUSTOM_SEC 0x08000000 291/* Hardware zero-overhead loop enabled. */ 292#define E_NDS32_HAS_ZOL (1 << 26) 293 294/* 4-bit for ABI signature, allow up to 16 ABIs 295 0: for OLD ABI V0, phase out 296 1: for V1 , starting with V0 toolchain 297 2: for V2 298 3: for V2FP (fs0, fs1 as function parameter) 299 4: for AABI */ 300/* Only old N1213HC use V0. 301 New ABI is used due to return register is changed to r0 from r5. */ 302#define EF_NDS_ABI 0x000000F0 303#define EF_NDS_ABI_SHIFT 4 304#define E_NDS_ABI_V0 0x00000000 305#define E_NDS_ABI_V1 0x00000010 306#define E_NDS_ABI_V2 0x00000020 307#define E_NDS_ABI_V2FP 0x00000030 308#define E_NDS_ABI_AABI 0x00000040 309#define E_NDS_ABI_V2FP_PLUS 0x00000050 310 311/* This flag signifies the version of Andes ELF. 312 Some more information may exist somewhere which is TBD. */ 313#define EF_NDS32_ELF_VERSION 0x0000000F 314#define EF_NDS32_ELF_VERSION_SHIFT 0 315 316/* Andes ELF Version 1.3 and before. */ 317#define E_NDS32_ELF_VER_1_2 0x0 318/* Andes ELF Version 1.31. */ 319#define E_NDS32_ELF_VER_1_3 0x1 320/* Andes ELF Version 1.4. Change the way we fix .debug_* and .gcc_except_table. 321 Change three bit for SAT. */ 322#define E_NDS32_ELF_VER_1_4 0x2 323 324#endif 325