include/elf/nds32.h

   1 /* NDS32 ELF support for BFD.
   2    Copyright (C) 2012-2021 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
  27 START_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
 196 END_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