/* NDS32 ELF support for BFD. Copyright (C) 2012-2021 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