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      1 /* NDS32 ELF support for BFD.
      2    Copyright (C) 2012-2014 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 /* Relocations.  */
     28 START_RELOC_NUMBERS (elf_nds32_reloc_type)
     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 
     50   /* RELA relocations.  */
     51   RELOC_NUMBER (R_NDS32_16_RELA, 19)
     52   RELOC_NUMBER (R_NDS32_32_RELA, 20)
     53   RELOC_NUMBER (R_NDS32_20_RELA, 21)
     54   RELOC_NUMBER (R_NDS32_9_PCREL_RELA, 22)
     55   RELOC_NUMBER (R_NDS32_15_PCREL_RELA, 23)
     56   RELOC_NUMBER (R_NDS32_17_PCREL_RELA, 24)
     57   RELOC_NUMBER (R_NDS32_25_PCREL_RELA, 25)
     58   RELOC_NUMBER (R_NDS32_HI20_RELA, 26)
     59   RELOC_NUMBER (R_NDS32_LO12S3_RELA, 27)
     60   RELOC_NUMBER (R_NDS32_LO12S2_RELA, 28)
     61   RELOC_NUMBER (R_NDS32_LO12S1_RELA, 29)
     62   RELOC_NUMBER (R_NDS32_LO12S0_RELA, 30)
     63   RELOC_NUMBER (R_NDS32_SDA15S3_RELA, 31)
     64   RELOC_NUMBER (R_NDS32_SDA15S2_RELA, 32)
     65   RELOC_NUMBER (R_NDS32_SDA15S1_RELA, 33)
     66   RELOC_NUMBER (R_NDS32_SDA15S0_RELA, 34)
     67   RELOC_NUMBER (R_NDS32_RELA_GNU_VTINHERIT, 35)
     68   RELOC_NUMBER (R_NDS32_RELA_GNU_VTENTRY, 36)
     69 
     70   RELOC_NUMBER (R_NDS32_GOT20, 37)
     71   RELOC_NUMBER (R_NDS32_25_PLTREL, 38)
     72   RELOC_NUMBER (R_NDS32_COPY, 39)
     73   RELOC_NUMBER (R_NDS32_GLOB_DAT, 40)
     74   RELOC_NUMBER (R_NDS32_JMP_SLOT, 41)
     75   RELOC_NUMBER (R_NDS32_RELATIVE, 42)
     76   RELOC_NUMBER (R_NDS32_GOTOFF, 43)
     77   RELOC_NUMBER (R_NDS32_GOTPC20, 44)
     78   RELOC_NUMBER (R_NDS32_GOT_HI20, 45)
     79   RELOC_NUMBER (R_NDS32_GOT_LO12, 46)
     80   RELOC_NUMBER (R_NDS32_GOTPC_HI20, 47)
     81   RELOC_NUMBER (R_NDS32_GOTPC_LO12, 48)
     82   RELOC_NUMBER (R_NDS32_GOTOFF_HI20, 49)
     83   RELOC_NUMBER (R_NDS32_GOTOFF_LO12, 50)
     84   RELOC_NUMBER (R_NDS32_INSN16, 51)
     85   RELOC_NUMBER (R_NDS32_LABEL, 52)
     86   RELOC_NUMBER (R_NDS32_LONGCALL1, 53)
     87   RELOC_NUMBER (R_NDS32_LONGCALL2, 54)
     88   RELOC_NUMBER (R_NDS32_LONGCALL3, 55)
     89   RELOC_NUMBER (R_NDS32_LONGJUMP1, 56)
     90   RELOC_NUMBER (R_NDS32_LONGJUMP2, 57)
     91   RELOC_NUMBER (R_NDS32_LONGJUMP3, 58)
     92   RELOC_NUMBER (R_NDS32_LOADSTORE, 59)
     93   RELOC_NUMBER (R_NDS32_9_FIXED_RELA, 60)
     94   RELOC_NUMBER (R_NDS32_15_FIXED_RELA, 61)
     95   RELOC_NUMBER (R_NDS32_17_FIXED_RELA, 62)
     96   RELOC_NUMBER (R_NDS32_25_FIXED_RELA, 63)
     97   RELOC_NUMBER (R_NDS32_PLTREL_HI20, 64)	/* This is obsoleted.  */
     98   RELOC_NUMBER (R_NDS32_PLTREL_LO12, 65)	/* This is obsoleted.  */
     99   RELOC_NUMBER (R_NDS32_PLT_GOTREL_HI20, 66)
    100   RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO12, 67)
    101   RELOC_NUMBER (R_NDS32_SDA12S2_DP_RELA, 68)
    102   RELOC_NUMBER (R_NDS32_SDA12S2_SP_RELA, 69)
    103   RELOC_NUMBER (R_NDS32_LO12S2_DP_RELA, 70)
    104   RELOC_NUMBER (R_NDS32_LO12S2_SP_RELA, 71)
    105   RELOC_NUMBER (R_NDS32_LO12S0_ORI_RELA, 72)
    106   RELOC_NUMBER (R_NDS32_SDA16S3_RELA, 73)
    107   RELOC_NUMBER (R_NDS32_SDA17S2_RELA, 74)
    108   RELOC_NUMBER (R_NDS32_SDA18S1_RELA, 75)
    109   RELOC_NUMBER (R_NDS32_SDA19S0_RELA, 76)
    110   RELOC_NUMBER (R_NDS32_DWARF2_OP1_RELA, 77)
    111   RELOC_NUMBER (R_NDS32_DWARF2_OP2_RELA, 78)
    112   RELOC_NUMBER (R_NDS32_DWARF2_LEB_RELA, 79)
    113   RELOC_NUMBER (R_NDS32_UPDATE_TA_RELA, 80)	/* This is obsoleted.  */
    114   RELOC_NUMBER (R_NDS32_9_PLTREL, 81)
    115   RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO20, 82)
    116   RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO15, 83)
    117   RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO19, 84)
    118   RELOC_NUMBER (R_NDS32_GOT_LO15, 85)
    119   RELOC_NUMBER (R_NDS32_GOT_LO19, 86)
    120   RELOC_NUMBER (R_NDS32_GOTOFF_LO15, 87)
    121   RELOC_NUMBER (R_NDS32_GOTOFF_LO19, 88)
    122   RELOC_NUMBER (R_NDS32_GOT15S2_RELA, 89)
    123   RELOC_NUMBER (R_NDS32_GOT17S2_RELA, 90)
    124   RELOC_NUMBER (R_NDS32_5_RELA, 91)
    125   RELOC_NUMBER (R_NDS32_10_UPCREL_RELA, 92)	/* This is obsoleted.  */
    126   RELOC_NUMBER (R_NDS32_SDA_FP7U2_RELA, 93)
    127   RELOC_NUMBER (R_NDS32_WORD_9_PCREL_RELA, 94)
    128   RELOC_NUMBER (R_NDS32_25_ABS_RELA, 95)
    129   RELOC_NUMBER (R_NDS32_17IFC_PCREL_RELA, 96)
    130   RELOC_NUMBER (R_NDS32_10IFCU_PCREL_RELA, 97)
    131   RELOC_NUMBER (R_NDS32_TLS_LE_HI20, 98)
    132   RELOC_NUMBER (R_NDS32_TLS_LE_LO12, 99)
    133   RELOC_NUMBER (R_NDS32_TLS_IE_HI20, 100)
    134   RELOC_NUMBER (R_NDS32_TLS_IE_LO12S2, 101)
    135   RELOC_NUMBER (R_NDS32_TLS_TPOFF, 102)
    136   RELOC_NUMBER (R_NDS32_TLS_LE_20, 103)
    137   RELOC_NUMBER (R_NDS32_TLS_LE_15S0, 104)
    138   RELOC_NUMBER (R_NDS32_TLS_LE_15S1, 105)
    139   RELOC_NUMBER (R_NDS32_TLS_LE_15S2, 106)
    140   RELOC_NUMBER (R_NDS32_LONGCALL4, 107)
    141   RELOC_NUMBER (R_NDS32_LONGCALL5, 108)
    142   RELOC_NUMBER (R_NDS32_LONGCALL6, 109)
    143   RELOC_NUMBER (R_NDS32_LONGJUMP4, 110)
    144   RELOC_NUMBER (R_NDS32_LONGJUMP5, 111)
    145   RELOC_NUMBER (R_NDS32_LONGJUMP6, 112)
    146   RELOC_NUMBER (R_NDS32_LONGJUMP7, 113)
    147 
    148   RELOC_NUMBER (R_NDS32_RELAX_ENTRY, 192)
    149   RELOC_NUMBER (R_NDS32_GOT_SUFF, 193)
    150   RELOC_NUMBER (R_NDS32_GOTOFF_SUFF, 194)
    151   RELOC_NUMBER (R_NDS32_PLT_GOT_SUFF, 195)
    152   RELOC_NUMBER (R_NDS32_MULCALL_SUFF, 196)	/* This is obsoleted.  */
    153   RELOC_NUMBER (R_NDS32_PTR, 197)
    154   RELOC_NUMBER (R_NDS32_PTR_COUNT, 198)
    155   RELOC_NUMBER (R_NDS32_PTR_RESOLVED, 199)
    156   RELOC_NUMBER (R_NDS32_PLTBLOCK, 200)		/* This is obsoleted.  */
    157   RELOC_NUMBER (R_NDS32_RELAX_REGION_BEGIN, 201)
    158   RELOC_NUMBER (R_NDS32_RELAX_REGION_END, 202)
    159   RELOC_NUMBER (R_NDS32_MINUEND, 203)
    160   RELOC_NUMBER (R_NDS32_SUBTRAHEND, 204)
    161   RELOC_NUMBER (R_NDS32_DIFF8, 205)
    162   RELOC_NUMBER (R_NDS32_DIFF16, 206)
    163   RELOC_NUMBER (R_NDS32_DIFF32, 207)
    164   RELOC_NUMBER (R_NDS32_DIFF_ULEB128, 208)
    165   RELOC_NUMBER (R_NDS32_DATA, 209)
    166   RELOC_NUMBER (R_NDS32_TRAN, 210)
    167   RELOC_NUMBER (R_NDS32_TLS_LE_ADD, 211)
    168   RELOC_NUMBER (R_NDS32_TLS_LE_LS, 212)
    169   RELOC_NUMBER (R_NDS32_EMPTY, 213)
    170 
    171 END_RELOC_NUMBERS (R_NDS32_max)
    172 
    173 /* Processor specific section indices.  These sections do not actually
    174    exist.  Symbols with a st_shndx field corresponding to one of these
    175    values have a special meaning.  */
    176 
    177 /* Processor specific flags for the ELF header e_flags field.
    178 
    179    31   28 27		      8 7   4 3       0
    180    ---------------------------------------------
    181    | ARCH | CONFUGURAION FIELD | ABI | ELF_VER |
    182    ---------------------------------------------  */
    183 
    184 /* Architechure definition.  */
    185 
    186 /* 4-bit (b31-b28) nds32 architecture field.
    187    We can have up to 15 architectures; 0000 is for unknown.  */
    188 #define EF_NDS_ARCH				0xF0000000
    189 #define EF_NDS_ARCH_SHIFT			28
    190 /* There could be more architectures. For now, only n1 and n1h.  */
    191 #define E_NDS_ARCH_STAR_RESERVED		0x00000000
    192 #define E_NDS_ARCH_STAR_V1_0			0x10000000
    193 #define E_NDS_ARCH_STAR_V2_0			0x20000000
    194 #define E_NDS_ARCH_STAR_V3_0			0x30000000
    195 #define E_NDS_ARCH_STAR_V3_M			0x40000000
    196 #define E_NDS_ARCH_STAR_V0_9			0x90000000	/* Obsoleted.  */
    197 /* n1 code.  */
    198 #define E_N1_ARCH			E_NDS_ARCH_STAR_V0_9
    199 /* n1h code.  */
    200 #define E_N1H_ARCH			E_NDS_ARCH_STAR_V1_0
    201 
    202 
    203 /* Configuration field definitioans.  */
    204 #define EF_NDS_INST				0x0FFFFF00
    205 
    206 /* E_NDS_ARCH_STAR_V1_0 configuration fields.
    207 
    208    E_NDS_ARCH_STAR_V2_0 configuration fields.
    209    These are discarded in v2.
    210      * E_NDS32_HAS_MFUSR_PC_INST	0x00000100
    211      * E_NDS32_HAS_DIV_INST		0x00002000
    212      * E_NDS32_HAS_NO_MAC_INST		0x00100000
    213    These are added in v2.
    214      * E_NDS32_HAS_DIV_DX_INST		0x00002000
    215      * E_NDS32_HAS_MAC_DX_INST		0x00100000  */
    216 
    217 /* MFUSR rt, PC and correct ISYNC, MSYNC instructions.
    218    Old N1213HC has no such instructions.  */
    219 #define E_NDS32_HAS_MFUSR_PC_INST		0x00000100 /* Reclaimed.  */
    220 #define E_NDS32_HAS_EX9_INST			0x00000100 /* v3, ELF 1.4.  */
    221 /* C/C++ performance extension instructions.  */
    222 #define E_NDS32_HAS_EXT_INST			0x00000200
    223 /* Performance extension set II instructions.  */
    224 #define E_NDS32_HAS_EXT2_INST			0x00000400
    225 /* Single precision Floating point processor instructions.  */
    226 #define E_NDS32_HAS_FPU_INST			0x00000800
    227 /* Audio instructions with 32-bit audio dx.lo register.  */
    228 #define E_NDS32_HAS_AUDIO_INST			0x00001000
    229 /* DIV instructions.  */
    230 #define E_NDS32_HAS_DIV_INST			0x00002000 /* Reclaimed.  */
    231 /* DIV instructions using d0/d1.  */
    232 #define E_NDS32_HAS_DIV_DX_INST			0x00002000 /* v2.  */
    233 /* 16-bit instructions.  */
    234 #define E_NDS32_HAS_16BIT_INST			0x00004000 /* Reclaimed.  */
    235 #define E_NDS32_HAS_IFC_INST			0x00004000 /* v3, ELF 1.4.  */
    236 /* String operation instructions.  */
    237 #define E_NDS32_HAS_STRING_INST			0x00008000
    238 /* Reduced register file.  */
    239 #define E_NDS32_HAS_REDUCED_REGS		0x00010000
    240 /* Video instructions.  */
    241 #define E_NDS32_HAS_VIDEO_INST			0x00020000 /* Reclaimed.  */
    242 #define E_NDS32_HAS_SATURATION_INST		0x00020000 /* v3, ELF 1.4.  */
    243 /* Encription instructions.  */
    244 #define E_NDS32_HAS_ENCRIPT_INST		0x00040000
    245 /* Doulbe Precision Floating point processor instructions.  */
    246 #define E_NDS32_HAS_FPU_DP_INST			0x00080000
    247 /* No MAC instruction used.  */
    248 #define E_NDS32_HAS_NO_MAC_INST			0x00100000 /* Reclaimed when V2/V3.  */
    249 /* MAC instruction using d0/d1.  */
    250 #define E_NDS32_HAS_MAC_DX_INST			0x00100000 /* v2.  */
    251 /* L2 cache instruction.  */
    252 #define E_NDS32_HAS_L2C_INST			0x00200000
    253 /* FPU registers configuration when FPU SP/DP presents; 0x00c00000.  */
    254 #define E_NDS32_FPU_REG_CONF_SHIFT		22
    255 #define E_NDS32_FPU_REG_CONF			(0x3 << E_NDS32_FPU_REG_CONF_SHIFT)
    256 #define E_NDS32_FPU_REG_8SP_4DP			0x0
    257 #define E_NDS32_FPU_REG_16SP_8DP		0x1
    258 #define E_NDS32_FPU_REG_32SP_16DP		0x2
    259 #define E_NDS32_FPU_REG_32SP_32DP		0x3
    260 /* FPU MAC instruction used.  */
    261 #define E_NDS32_HAS_FPU_MAC_INST		0x01000000
    262 /* <<<Empty Check>>>.  */
    263 #define E_NDS32_NULL				0x02000000
    264 /* PIC enabled.  */
    265 #define E_NDS32_HAS_PIC				0x04000000
    266 /* Use custom section.  */
    267 #define E_NDS32_HAS_CUSTOM_SEC			0x08000000
    268 
    269 /* 4-bit for ABI signature, allow up to 16 ABIs
    270    0: for OLD ABI V0, phase out
    271    1: for V1 , starting with V0 toolchain
    272    2: for V2
    273    3: for V2FP (fs0, fs1 as function parameter)
    274    4: for AABI  */
    275 /* Only old N1213HC use V0.
    276    New ABI is used due to return register is changed to r0 from r5.  */
    277 #define EF_NDS_ABI				0x000000F0
    278 #define EF_NDS_ABI_SHIFT			4
    279 #define E_NDS_ABI_V0				0x00000000
    280 #define E_NDS_ABI_V1				0x00000010
    281 #define E_NDS_ABI_V2				0x00000020
    282 #define E_NDS_ABI_V2FP				0x00000030
    283 #define E_NDS_ABI_AABI				0x00000040
    284 #define E_NDS_ABI_V2FP_PLUS			0x00000050
    285 
    286 /* This flag signifies the version of Andes ELF.
    287    Some more information may exist somewhere which is TBD.  */
    288 #define EF_NDS32_ELF_VERSION			0x0000000F
    289 #define EF_NDS32_ELF_VERSION_SHIFT		0
    290 
    291 /* Andes ELF Version 1.3 and before.  */
    292 #define E_NDS32_ELF_VER_1_2			0x0
    293 /* Andes ELF Version 1.31.  */
    294 #define E_NDS32_ELF_VER_1_3			0x1
    295 /* Andes ELF Version 1.4. Change the way we fix .debug_* and .gcc_except_table.
    296    Change three bit for EX9, IFC and SAT.  */
    297 #define E_NDS32_ELF_VER_1_4			0x2
    298 
    299 #endif
    300