1 /* RX ELF support for BFD. 2 Copyright (C) 2008-2020 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software Foundation, 18 Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 19 20 #ifndef _ELF_RX_H 21 #define _ELF_RX_H 22 23 #include "elf/reloc-macros.h" 24 25 /* Note that there are a few internal relocation types used by the 26 linker to do link-time relaxation. If you update this file, please 27 check elf32-rx.c to see if any of the internal relocations need to 28 be, er, relocated. */ 29 30 /* Preliminary relocations. */ 31 START_RELOC_NUMBERS (elf_rx_reloc_type) 32 33 RELOC_NUMBER (R_RX_NONE, 0x00) 34 /* These are for data, and are bi-endian. */ 35 RELOC_NUMBER (R_RX_DIR32, 0x01) /* Was: R_RX_32. */ 36 RELOC_NUMBER (R_RX_DIR24S, 0x02) /* Was: R_RX_24. */ 37 RELOC_NUMBER (R_RX_DIR16, 0x03) 38 RELOC_NUMBER (R_RX_DIR16U, 0x04) /* Was: R_RX_16_UNS. */ 39 RELOC_NUMBER (R_RX_DIR16S, 0x05) /* Was: R_RX_16. */ 40 RELOC_NUMBER (R_RX_DIR8, 0x06) 41 RELOC_NUMBER (R_RX_DIR8U, 0x07) /* Was: R_RX_8_UNS. */ 42 RELOC_NUMBER (R_RX_DIR8S, 0x08) /* Was: R_RX_8. */ 43 44 /* Signed pc-relative values. */ 45 RELOC_NUMBER (R_RX_DIR24S_PCREL, 0x09) /* Was: R_RX_24_PCREL. */ 46 RELOC_NUMBER (R_RX_DIR16S_PCREL, 0x0a) /* Was: R_RX_16_PCREL. */ 47 RELOC_NUMBER (R_RX_DIR8S_PCREL, 0x0b) /* Was: R_RX_8_PCREL. */ 48 49 /* These are for fields in the instructions. */ 50 RELOC_NUMBER (R_RX_DIR16UL, 0x0c) 51 RELOC_NUMBER (R_RX_DIR16UW, 0x0d) 52 RELOC_NUMBER (R_RX_DIR8UL, 0x0e) 53 RELOC_NUMBER (R_RX_DIR8UW, 0x0f) 54 RELOC_NUMBER (R_RX_DIR32_REV, 0x10) 55 RELOC_NUMBER (R_RX_DIR16_REV, 0x11) 56 RELOC_NUMBER (R_RX_DIR3U_PCREL, 0x12) 57 58 /* These are extensions added by Red Hat. */ 59 RELOC_NUMBER (R_RX_RH_3_PCREL, 0x20) /* Like R_RX_DIR8S_PCREL but only 3-bits. */ 60 RELOC_NUMBER (R_RX_RH_16_OP, 0x21) /* Like R_RX_DIR16 but for opcodes - always big endian. */ 61 RELOC_NUMBER (R_RX_RH_24_OP, 0x22) /* Like R_RX_DIR24S but for opcodes - always big endian. */ 62 RELOC_NUMBER (R_RX_RH_32_OP, 0x23) /* Like R_RX_DIR32 but for opcodes - always big endian. */ 63 RELOC_NUMBER (R_RX_RH_24_UNS, 0x24) /* Like R_RX_DIR24S but for unsigned values. */ 64 RELOC_NUMBER (R_RX_RH_8_NEG, 0x25) /* Like R_RX_DIR8 but -x is stored. */ 65 RELOC_NUMBER (R_RX_RH_16_NEG, 0x26) /* Like R_RX_DIR16 but -x is stored. */ 66 RELOC_NUMBER (R_RX_RH_24_NEG, 0x27) /* Like R_RX_DIR24S but -x is stored. */ 67 RELOC_NUMBER (R_RX_RH_32_NEG, 0x28) /* Like R_RX_DIR32 but -x is stored. */ 68 RELOC_NUMBER (R_RX_RH_DIFF, 0x29) /* Subtract from a previous relocation. */ 69 RELOC_NUMBER (R_RX_RH_GPRELB, 0x2a) /* Byte value, relative to __gp. */ 70 RELOC_NUMBER (R_RX_RH_GPRELW, 0x2b) /* Word value, relative to __gp. */ 71 RELOC_NUMBER (R_RX_RH_GPRELL, 0x2c) /* Long value, relative to __gp. */ 72 RELOC_NUMBER (R_RX_RH_RELAX, 0x2d) /* Marks opcodes suitable for linker relaxation. */ 73 74 /* These are for complex relocs. */ 75 RELOC_NUMBER (R_RX_ABS32, 0x41) 76 RELOC_NUMBER (R_RX_ABS24S, 0x42) 77 RELOC_NUMBER (R_RX_ABS16, 0x43) 78 RELOC_NUMBER (R_RX_ABS16U, 0x44) 79 RELOC_NUMBER (R_RX_ABS16S, 0x45) 80 RELOC_NUMBER (R_RX_ABS8, 0x46) 81 RELOC_NUMBER (R_RX_ABS8U, 0x47) 82 RELOC_NUMBER (R_RX_ABS8S, 0x48) 83 RELOC_NUMBER (R_RX_ABS24S_PCREL, 0x49) 84 RELOC_NUMBER (R_RX_ABS16S_PCREL, 0x4a) 85 RELOC_NUMBER (R_RX_ABS8S_PCREL, 0x4b) 86 RELOC_NUMBER (R_RX_ABS16UL, 0x4c) 87 RELOC_NUMBER (R_RX_ABS16UW, 0x4d) 88 RELOC_NUMBER (R_RX_ABS8UL, 0x4e) 89 RELOC_NUMBER (R_RX_ABS8UW, 0x4f) 90 RELOC_NUMBER (R_RX_ABS32_REV, 0x50) 91 RELOC_NUMBER (R_RX_ABS16_REV, 0x51) 92 93 RELOC_NUMBER (R_RX_SYM, 0x80) 94 RELOC_NUMBER (R_RX_OPneg, 0x81) 95 RELOC_NUMBER (R_RX_OPadd, 0x82) 96 RELOC_NUMBER (R_RX_OPsub, 0x83) 97 RELOC_NUMBER (R_RX_OPmul, 0x84) 98 RELOC_NUMBER (R_RX_OPdiv, 0x85) 99 RELOC_NUMBER (R_RX_OPshla, 0x86) 100 RELOC_NUMBER (R_RX_OPshra, 0x87) 101 RELOC_NUMBER (R_RX_OPsctsize, 0x88) 102 RELOC_NUMBER (R_RX_OPscttop, 0x8d) 103 RELOC_NUMBER (R_RX_OPand, 0x90) 104 RELOC_NUMBER (R_RX_OPor, 0x91) 105 RELOC_NUMBER (R_RX_OPxor, 0x92) 106 RELOC_NUMBER (R_RX_OPnot, 0x93) 107 RELOC_NUMBER (R_RX_OPmod, 0x94) 108 RELOC_NUMBER (R_RX_OPromtop, 0x95) 109 RELOC_NUMBER (R_RX_OPramtop, 0x96) 110 111 END_RELOC_NUMBERS (R_RX_max) 112 113 #define EF_RX_CPU_RX 0x00000079 /* FIXME: this collides with the E_FLAG_RX_... values below. */ 114 #define EF_RX_CPU_MASK 0x000003FF /* specific cpu bits. */ 115 #define EF_RX_ALL_FLAGS (EF_RX_CPU_MASK) 116 117 /* Values for the e_flags field in the ELF header. */ 118 #define E_FLAG_RX_64BIT_DOUBLES (1 << 0) 119 #define E_FLAG_RX_DSP (1 << 1) /* Defined in the RX CPU Object file specification, but not explained. */ 120 #define E_FLAG_RX_PID (1 << 2) /* Unofficial - DJ */ 121 #define E_FLAG_RX_ABI (1 << 3) /* Binary passes stacked arguments using natural alignment. Unofficial - NC. */ 122 #define E_FLAG_RX_SINSNS_SET (1 << 6) /* Set if bit-5 is significant. */ 123 #define E_FLAG_RX_SINSNS_YES (1 << 7) /* Set if string instructions are used in the binary. */ 124 #define E_FLAG_RX_SINSNS_NO 0 /* Bit-5 if this binary must not be linked with a string instruction using binary. */ 125 #define E_FLAG_RX_SINSNS_MASK (3 << 6) /* Mask of bits used to determine string instruction use. */ 126 #define E_FLAG_RX_V2 (1 << 8) /* RX v2 instructions */ 127 #define E_FLAG_RX_V3 (1 << 9) /* RX v3 instructions */ 128 129 /* These define the addend field of R_RX_RH_RELAX relocations. */ 130 #define RX_RELAXA_IMM6 0x00000010 /* Imm8/16/24/32 at bit offset 6. */ 131 #define RX_RELAXA_IMM12 0x00000020 /* Imm8/16/24/32 at bit offset 12. */ 132 #define RX_RELAXA_DSP4 0x00000040 /* Dsp0/8/16 at bit offset 4. */ 133 #define RX_RELAXA_DSP6 0x00000080 /* Dsp0/8/16 at bit offset 6. */ 134 #define RX_RELAXA_DSP14 0x00000100 /* Dsp0/8/16 at bit offset 14. */ 135 #define RX_RELAXA_BRA 0x00000200 /* Any type of branch (must be decoded). */ 136 #define RX_RELAXA_RNUM 0x0000000f /* Number of associated relocations. */ 137 /* These mark the place where alignment is requested, and the place where the filler bytes end. */ 138 #define RX_RELAXA_ALIGN 0x10000000 /* Start alignment; the remaining bits are the alignment value. */ 139 #define RX_RELAXA_ELIGN 0x20000000 /* End alignment; the remaining bits are the alignment value. */ 140 #define RX_RELAXA_ANUM 0x00ffffff /* Alignment amount, in bytes (i.e. .balign). */ 141 142 #endif /* _ELF_RX_H */ 143