/* NDS32 ELF support for BFD.
  Copyright (C) 2012-2024 Free Software Foundation, Inc.
  Contributed by Andes Technology Corporation.

  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 _ELF_NDS32_H
#define _ELF_NDS32_H

#include "elf/reloc-macros.h"

START_RELOC_NUMBERS (elf_nds32_reloc_type)
 /* These used for relocations.  */
 RELOC_NUMBER (R_NDS32_NONE, 0)
 /* REL relocations.  */
 RELOC_NUMBER (R_NDS32_16, 1)
 RELOC_NUMBER (R_NDS32_32, 2)
 RELOC_NUMBER (R_NDS32_20, 3)
 RELOC_NUMBER (R_NDS32_9_PCREL, 4)
 RELOC_NUMBER (R_NDS32_15_PCREL, 5)
 RELOC_NUMBER (R_NDS32_17_PCREL, 6)
 RELOC_NUMBER (R_NDS32_25_PCREL, 7)
 RELOC_NUMBER (R_NDS32_HI20, 8)
 RELOC_NUMBER (R_NDS32_LO12S3, 9)
 RELOC_NUMBER (R_NDS32_LO12S2, 10)
 RELOC_NUMBER (R_NDS32_LO12S1, 11)
 RELOC_NUMBER (R_NDS32_LO12S0, 12)
 RELOC_NUMBER (R_NDS32_SDA15S3, 13)
 RELOC_NUMBER (R_NDS32_SDA15S2, 14)
 RELOC_NUMBER (R_NDS32_SDA15S1, 15)
 RELOC_NUMBER (R_NDS32_SDA15S0, 16)
 RELOC_NUMBER (R_NDS32_GNU_VTINHERIT, 17)
 RELOC_NUMBER (R_NDS32_GNU_VTENTRY, 18)
 /* RELA relocations.  */
 RELOC_NUMBER (R_NDS32_16_RELA, 19)
 RELOC_NUMBER (R_NDS32_32_RELA, 20)
 RELOC_NUMBER (R_NDS32_20_RELA, 21)
 RELOC_NUMBER (R_NDS32_9_PCREL_RELA, 22)
 RELOC_NUMBER (R_NDS32_15_PCREL_RELA, 23)
 RELOC_NUMBER (R_NDS32_17_PCREL_RELA, 24)
 RELOC_NUMBER (R_NDS32_25_PCREL_RELA, 25)
 RELOC_NUMBER (R_NDS32_HI20_RELA, 26)
 RELOC_NUMBER (R_NDS32_LO12S3_RELA, 27)
 RELOC_NUMBER (R_NDS32_LO12S2_RELA, 28)
 RELOC_NUMBER (R_NDS32_LO12S1_RELA, 29)
 RELOC_NUMBER (R_NDS32_LO12S0_RELA, 30)
 RELOC_NUMBER (R_NDS32_SDA15S3_RELA, 31)
 RELOC_NUMBER (R_NDS32_SDA15S2_RELA, 32)
 RELOC_NUMBER (R_NDS32_SDA15S1_RELA, 33)
 RELOC_NUMBER (R_NDS32_SDA15S0_RELA, 34)
 RELOC_NUMBER (R_NDS32_RELA_GNU_VTINHERIT, 35)
 RELOC_NUMBER (R_NDS32_RELA_GNU_VTENTRY, 36)
 /* GOT and PLT.  */
 RELOC_NUMBER (R_NDS32_GOT20, 37)
 RELOC_NUMBER (R_NDS32_25_PLTREL, 38)
 RELOC_NUMBER (R_NDS32_COPY, 39)
 RELOC_NUMBER (R_NDS32_GLOB_DAT, 40)
 RELOC_NUMBER (R_NDS32_JMP_SLOT, 41)
 RELOC_NUMBER (R_NDS32_RELATIVE, 42)
 RELOC_NUMBER (R_NDS32_GOTOFF, 43)
 RELOC_NUMBER (R_NDS32_GOTPC20, 44)
 RELOC_NUMBER (R_NDS32_GOT_HI20, 45)
 RELOC_NUMBER (R_NDS32_GOT_LO12, 46)
 RELOC_NUMBER (R_NDS32_GOTPC_HI20, 47)
 RELOC_NUMBER (R_NDS32_GOTPC_LO12, 48)
 RELOC_NUMBER (R_NDS32_GOTOFF_HI20, 49)
 RELOC_NUMBER (R_NDS32_GOTOFF_LO12, 50)
 /* 32_to_16 relaxations.  */
 RELOC_NUMBER (R_NDS32_INSN16, 51)
 /* Alignment tag.  */
 RELOC_NUMBER (R_NDS32_LABEL, 52)
 RELOC_NUMBER (R_NDS32_LONGCALL1, 53)          /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_LONGCALL2, 54)          /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_LONGCALL3, 55)          /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_LONGJUMP1, 56)          /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_LONGJUMP2, 57)          /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_LONGJUMP3, 58)          /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_LOADSTORE, 59)          /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_9_FIXED_RELA, 60)
 RELOC_NUMBER (R_NDS32_15_FIXED_RELA, 61)
 RELOC_NUMBER (R_NDS32_17_FIXED_RELA, 62)
 RELOC_NUMBER (R_NDS32_25_FIXED_RELA, 63)
 RELOC_NUMBER (R_NDS32_PLTREL_HI20, 64)        /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_PLTREL_LO12, 65)        /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_PLT_GOTREL_HI20, 66)
 RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO12, 67)
 RELOC_NUMBER (R_NDS32_SDA12S2_DP_RELA, 68)
 RELOC_NUMBER (R_NDS32_SDA12S2_SP_RELA, 69)
 RELOC_NUMBER (R_NDS32_LO12S2_DP_RELA, 70)
 RELOC_NUMBER (R_NDS32_LO12S2_SP_RELA, 71)
 RELOC_NUMBER (R_NDS32_LO12S0_ORI_RELA, 72)
 RELOC_NUMBER (R_NDS32_SDA16S3_RELA, 73)
 RELOC_NUMBER (R_NDS32_SDA17S2_RELA, 74)
 RELOC_NUMBER (R_NDS32_SDA18S1_RELA, 75)
 RELOC_NUMBER (R_NDS32_SDA19S0_RELA, 76)
 RELOC_NUMBER (R_NDS32_DWARF2_OP1_RELA, 77)    /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_DWARF2_OP2_RELA, 78)    /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_DWARF2_LEB_RELA, 79)    /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_UPDATE_TA_RELA, 80)     /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_9_PLTREL, 81)
 RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO20, 82)
 RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO15, 83)
 RELOC_NUMBER (R_NDS32_PLT_GOTREL_LO19, 84)
 RELOC_NUMBER (R_NDS32_GOT_LO15, 85)
 RELOC_NUMBER (R_NDS32_GOT_LO19, 86)
 RELOC_NUMBER (R_NDS32_GOTOFF_LO15, 87)
 RELOC_NUMBER (R_NDS32_GOTOFF_LO19, 88)
 RELOC_NUMBER (R_NDS32_GOT15S2_RELA, 89)
 RELOC_NUMBER (R_NDS32_GOT17S2_RELA, 90)
 RELOC_NUMBER (R_NDS32_5_RELA, 91)
 RELOC_NUMBER (R_NDS32_10_UPCREL_RELA, 92)     /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_SDA_FP7U2_RELA, 93)
 RELOC_NUMBER (R_NDS32_WORD_9_PCREL_RELA, 94)
 RELOC_NUMBER (R_NDS32_25_ABS_RELA, 95)
 RELOC_NUMBER (R_NDS32_17IFC_PCREL_RELA, 96)   /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_10IFCU_PCREL_RELA, 97)  /* This is obsoleted.  */
 /* TLS support.  */
 RELOC_NUMBER (R_NDS32_TLS_LE_HI20, 98)
 RELOC_NUMBER (R_NDS32_TLS_LE_LO12, 99)
 RELOC_NUMBER (R_NDS32_TLS_IE_HI20, 100)
 RELOC_NUMBER (R_NDS32_TLS_IE_LO12S2, 101)
 RELOC_NUMBER (R_NDS32_TLS_TPOFF, 102)
 RELOC_NUMBER (R_NDS32_TLS_LE_20, 103)
 RELOC_NUMBER (R_NDS32_TLS_LE_15S0, 104)
 RELOC_NUMBER (R_NDS32_TLS_LE_15S1, 105)
 RELOC_NUMBER (R_NDS32_TLS_LE_15S2, 106)
 RELOC_NUMBER (R_NDS32_LONGCALL4, 107)
 RELOC_NUMBER (R_NDS32_LONGCALL5, 108)
 RELOC_NUMBER (R_NDS32_LONGCALL6, 109)
 RELOC_NUMBER (R_NDS32_LONGJUMP4, 110)
 RELOC_NUMBER (R_NDS32_LONGJUMP5, 111)
 RELOC_NUMBER (R_NDS32_LONGJUMP6, 112)
 RELOC_NUMBER (R_NDS32_LONGJUMP7, 113)
 /* Reserved numbers: 114.  */
 /* TLS support */
 RELOC_NUMBER (R_NDS32_TLS_IE_LO12, 115)
 RELOC_NUMBER (R_NDS32_TLS_IEGP_HI20, 116)
 RELOC_NUMBER (R_NDS32_TLS_IEGP_LO12, 117)
 RELOC_NUMBER (R_NDS32_TLS_IEGP_LO12S2, 118)
 RELOC_NUMBER (R_NDS32_TLS_DESC, 119)
 RELOC_NUMBER (R_NDS32_TLS_DESC_HI20, 120)
 RELOC_NUMBER (R_NDS32_TLS_DESC_LO12, 121)
 RELOC_NUMBER (R_NDS32_TLS_DESC_20, 122)
 RELOC_NUMBER (R_NDS32_TLS_DESC_SDA17S2, 123)
 /* Reserved numbers: 124-191.  */

 /* These used only for relaxations  */
 RELOC_NUMBER (R_NDS32_RELAX_ENTRY, 192)
 RELOC_NUMBER (R_NDS32_GOT_SUFF, 193)
 RELOC_NUMBER (R_NDS32_GOTOFF_SUFF, 194)
 RELOC_NUMBER (R_NDS32_PLT_GOT_SUFF, 195)
 RELOC_NUMBER (R_NDS32_MULCALL_SUFF, 196)      /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_PTR, 197)
 RELOC_NUMBER (R_NDS32_PTR_COUNT, 198)
 RELOC_NUMBER (R_NDS32_PTR_RESOLVED, 199)
 RELOC_NUMBER (R_NDS32_PLTBLOCK, 200)          /* This is obsoleted.  */
 RELOC_NUMBER (R_NDS32_RELAX_REGION_BEGIN, 201)
 RELOC_NUMBER (R_NDS32_RELAX_REGION_END, 202)
 RELOC_NUMBER (R_NDS32_MINUEND, 203)
 RELOC_NUMBER (R_NDS32_SUBTRAHEND, 204)
 RELOC_NUMBER (R_NDS32_DIFF8, 205)
 RELOC_NUMBER (R_NDS32_DIFF16, 206)
 RELOC_NUMBER (R_NDS32_DIFF32, 207)
 RELOC_NUMBER (R_NDS32_DIFF_ULEB128, 208)
 RELOC_NUMBER (R_NDS32_DATA, 209)
 RELOC_NUMBER (R_NDS32_TRAN, 210)
 /* TLS support */
 RELOC_NUMBER (R_NDS32_TLS_LE_ADD, 211)
 RELOC_NUMBER (R_NDS32_TLS_LE_LS, 212)
 RELOC_NUMBER (R_NDS32_EMPTY, 213)
 RELOC_NUMBER (R_NDS32_TLS_DESC_ADD, 214)
 RELOC_NUMBER (R_NDS32_TLS_DESC_FUNC, 215)
 RELOC_NUMBER (R_NDS32_TLS_DESC_CALL, 216)
 RELOC_NUMBER (R_NDS32_TLS_DESC_MEM, 217)
 RELOC_NUMBER (R_NDS32_RELAX_REMOVE, 218)
 RELOC_NUMBER (R_NDS32_RELAX_GROUP, 219)
 RELOC_NUMBER (R_NDS32_TLS_IEGP_LW, 220)
 RELOC_NUMBER (R_NDS32_LSI, 221)
 /* Reserved numbers: 222-255.  */

END_RELOC_NUMBERS (R_NDS32_max)

/* Processor specific section indices.  These sections do not actually
  exist.  Symbols with a st_shndx field corresponding to one of these
  values have a special meaning.  */

/* Processor specific flags for the ELF header e_flags field.

  31   28 27                 8 7   4 3       0
  ---------------------------------------------
  | ARCH | CONFUGURAION FIELD | ABI | ELF_VER |
  ---------------------------------------------  */

/* Architechure definition.  */

/* 4-bit (b31-b28) nds32 architecture field.
  We can have up to 15 architectures; 0000 is for unknown.  */
#define EF_NDS_ARCH                             0xF0000000
#define EF_NDS_ARCH_SHIFT                       28
/* There could be more architectures. For now, only n1 and n1h.  */
#define E_NDS_ARCH_STAR_RESERVED                0x00000000
#define E_NDS_ARCH_STAR_V1_0                    0x10000000
#define E_NDS_ARCH_STAR_V2_0                    0x20000000
#define E_NDS_ARCH_STAR_V3_0                    0x30000000
#define E_NDS_ARCH_STAR_V3_M                    0x40000000
#define E_NDS_ARCH_STAR_V0_9                    0x90000000      /* Obsoleted.  */
/* n1 code.  */
#define E_N1_ARCH                       E_NDS_ARCH_STAR_V0_9
/* n1h code.  */
#define E_N1H_ARCH                      E_NDS_ARCH_STAR_V1_0


/* Configuration field definitioans.  */
#define EF_NDS_INST                             0x0FFFFF00

/* E_NDS_ARCH_STAR_V1_0 configuration fields.

  E_NDS_ARCH_STAR_V2_0 configuration fields.
  These are discarded in v2.
    * E_NDS32_HAS_MFUSR_PC_INST        0x00000100
    * E_NDS32_HAS_DIV_INST             0x00002000
    * E_NDS32_HAS_NO_MAC_INST          0x00100000
  These are added in v2.
    * E_NDS32_HAS_DIV_DX_INST          0x00002000
    * E_NDS32_HAS_MAC_DX_INST          0x00100000  */

/* MFUSR rt, PC and correct ISYNC, MSYNC instructions.
  Old N1213HC has no such instructions.  */
#define E_NDS32_HAS_MFUSR_PC_INST               0x00000100 /* Reclaimed.  */
/* C/C++ performance extension instructions.  */
#define E_NDS32_HAS_EXT_INST                    0x00000200
/* Performance extension set II instructions.  */
#define E_NDS32_HAS_EXT2_INST                   0x00000400
/* Single precision Floating point processor instructions.  */
#define E_NDS32_HAS_FPU_INST                    0x00000800
/* Audio instructions with 32-bit audio dx.lo register.  */
#define E_NDS32_HAS_AUDIO_INST                  0x00001000
/* DIV instructions.  */
#define E_NDS32_HAS_DIV_INST                    0x00002000 /* Reclaimed.  */
/* DIV instructions using d0/d1.  */
#define E_NDS32_HAS_DIV_DX_INST                 0x00002000 /* v2.  */
/* 16-bit instructions.  */
#define E_NDS32_HAS_16BIT_INST                  0x00004000 /* Reclaimed.  */
/* String operation instructions.  */
#define E_NDS32_HAS_STRING_INST                 0x00008000
/* Reduced register file.  */
#define E_NDS32_HAS_REDUCED_REGS                0x00010000
/* Video instructions.  */
#define E_NDS32_HAS_VIDEO_INST                  0x00020000 /* Reclaimed.  */
#define E_NDS32_HAS_SATURATION_INST             0x00020000 /* v3, ELF 1.4.  */
/* Encription instructions.  */
#define E_NDS32_HAS_ENCRIPT_INST                0x00040000
/* Doulbe Precision Floating point processor instructions.  */
#define E_NDS32_HAS_FPU_DP_INST                 0x00080000
/* No MAC instruction used.  */
#define E_NDS32_HAS_NO_MAC_INST                 0x00100000 /* Reclaimed when V2/V3.  */
/* MAC instruction using d0/d1.  */
#define E_NDS32_HAS_MAC_DX_INST                 0x00100000 /* v2.  */
/* L2 cache instruction.  */
#define E_NDS32_HAS_L2C_INST                    0x00200000
/* FPU registers configuration when FPU SP/DP presents; 0x00c00000.  */
#define E_NDS32_FPU_REG_CONF_SHIFT              22
#define E_NDS32_FPU_REG_CONF                    (0x3 << E_NDS32_FPU_REG_CONF_SHIFT)
#define E_NDS32_FPU_REG_8SP_4DP                 0x0
#define E_NDS32_FPU_REG_16SP_8DP                0x1
#define E_NDS32_FPU_REG_32SP_16DP               0x2
#define E_NDS32_FPU_REG_32SP_32DP               0x3
/* FPU MAC instruction used.  */
#define E_NDS32_HAS_FPU_MAC_INST                0x01000000
/* DSP extension.  */
#define E_NDS32_HAS_DSP_INST                    0x02000000
/* PIC enabled.  */
#define E_NDS32_HAS_PIC                         0x04000000
/* Use custom section.  */
#define E_NDS32_HAS_CUSTOM_SEC                  0x08000000
/* Hardware zero-overhead loop enabled.  */
#define E_NDS32_HAS_ZOL                         (1 << 26)

/* 4-bit for ABI signature, allow up to 16 ABIs
  0: for OLD ABI V0, phase out
  1: for V1 , starting with V0 toolchain
  2: for V2
  3: for V2FP (fs0, fs1 as function parameter)
  4: for AABI  */
/* Only old N1213HC use V0.
  New ABI is used due to return register is changed to r0 from r5.  */
#define EF_NDS_ABI                              0x000000F0
#define EF_NDS_ABI_SHIFT                        4
#define E_NDS_ABI_V0                            0x00000000
#define E_NDS_ABI_V1                            0x00000010
#define E_NDS_ABI_V2                            0x00000020
#define E_NDS_ABI_V2FP                          0x00000030
#define E_NDS_ABI_AABI                          0x00000040
#define E_NDS_ABI_V2FP_PLUS                     0x00000050

/* This flag signifies the version of Andes ELF.
  Some more information may exist somewhere which is TBD.  */
#define EF_NDS32_ELF_VERSION                    0x0000000F
#define EF_NDS32_ELF_VERSION_SHIFT              0

/* Andes ELF Version 1.3 and before.  */
#define E_NDS32_ELF_VER_1_2                     0x0
/* Andes ELF Version 1.31.  */
#define E_NDS32_ELF_VER_1_3                     0x1
/* Andes ELF Version 1.4. Change the way we fix .debug_* and .gcc_except_table.
  Change three bit for SAT.  */
#define E_NDS32_ELF_VER_1_4                     0x2

#endif

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