/* RX ELF support for BFD.
Copyright (C) 2008-2024 Free Software Foundation, Inc.
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_RX_H
#define _ELF_RX_H
#include "elf/reloc-macros.h"
/* Note that there are a few internal relocation types used by the
linker to do link-time relaxation. If you update this file, please
check elf32-rx.c to see if any of the internal relocations need to
be, er, relocated. */
/* These are for fields in the instructions. */
RELOC_NUMBER (R_RX_DIR16UL, 0x0c)
RELOC_NUMBER (R_RX_DIR16UW, 0x0d)
RELOC_NUMBER (R_RX_DIR8UL, 0x0e)
RELOC_NUMBER (R_RX_DIR8UW, 0x0f)
RELOC_NUMBER (R_RX_DIR32_REV, 0x10)
RELOC_NUMBER (R_RX_DIR16_REV, 0x11)
RELOC_NUMBER (R_RX_DIR3U_PCREL, 0x12)
/* These are extensions added by Red Hat. */
RELOC_NUMBER (R_RX_RH_3_PCREL, 0x20) /* Like R_RX_DIR8S_PCREL but only 3-bits. */
RELOC_NUMBER (R_RX_RH_16_OP, 0x21) /* Like R_RX_DIR16 but for opcodes - always big endian. */
RELOC_NUMBER (R_RX_RH_24_OP, 0x22) /* Like R_RX_DIR24S but for opcodes - always big endian. */
RELOC_NUMBER (R_RX_RH_32_OP, 0x23) /* Like R_RX_DIR32 but for opcodes - always big endian. */
RELOC_NUMBER (R_RX_RH_24_UNS, 0x24) /* Like R_RX_DIR24S but for unsigned values. */
RELOC_NUMBER (R_RX_RH_8_NEG, 0x25) /* Like R_RX_DIR8 but -x is stored. */
RELOC_NUMBER (R_RX_RH_16_NEG, 0x26) /* Like R_RX_DIR16 but -x is stored. */
RELOC_NUMBER (R_RX_RH_24_NEG, 0x27) /* Like R_RX_DIR24S but -x is stored. */
RELOC_NUMBER (R_RX_RH_32_NEG, 0x28) /* Like R_RX_DIR32 but -x is stored. */
RELOC_NUMBER (R_RX_RH_DIFF, 0x29) /* Subtract from a previous relocation. */
RELOC_NUMBER (R_RX_RH_GPRELB, 0x2a) /* Byte value, relative to __gp. */
RELOC_NUMBER (R_RX_RH_GPRELW, 0x2b) /* Word value, relative to __gp. */
RELOC_NUMBER (R_RX_RH_GPRELL, 0x2c) /* Long value, relative to __gp. */
RELOC_NUMBER (R_RX_RH_RELAX, 0x2d) /* Marks opcodes suitable for linker relaxation. */
#define EF_RX_CPU_RX 0x00000079 /* FIXME: this collides with the E_FLAG_RX_... values below. */
#define EF_RX_CPU_MASK 0x000003FF /* specific cpu bits. */
#define EF_RX_ALL_FLAGS (EF_RX_CPU_MASK)
/* Values for the e_flags field in the ELF header. */
#define E_FLAG_RX_64BIT_DOUBLES (1 << 0)
#define E_FLAG_RX_DSP (1 << 1) /* Defined in the RX CPU Object file specification, but not explained. */
#define E_FLAG_RX_PID (1 << 2) /* Unofficial - DJ */
#define E_FLAG_RX_ABI (1 << 3) /* Binary passes stacked arguments using natural alignment. Unofficial - NC. */
#define E_FLAG_RX_SINSNS_SET (1 << 6) /* Set if bit-5 is significant. */
#define E_FLAG_RX_SINSNS_YES (1 << 7) /* Set if string instructions are used in the binary. */
#define E_FLAG_RX_SINSNS_NO 0 /* Bit-5 if this binary must not be linked with a string instruction using binary. */
#define E_FLAG_RX_SINSNS_MASK (3 << 6) /* Mask of bits used to determine string instruction use. */
#define E_FLAG_RX_V2 (1 << 8) /* RX v2 instructions */
#define E_FLAG_RX_V3 (1 << 9) /* RX v3 instructions */
/* These define the addend field of R_RX_RH_RELAX relocations. */
#define RX_RELAXA_IMM6 0x00000010 /* Imm8/16/24/32 at bit offset 6. */
#define RX_RELAXA_IMM12 0x00000020 /* Imm8/16/24/32 at bit offset 12. */
#define RX_RELAXA_DSP4 0x00000040 /* Dsp0/8/16 at bit offset 4. */
#define RX_RELAXA_DSP6 0x00000080 /* Dsp0/8/16 at bit offset 6. */
#define RX_RELAXA_DSP14 0x00000100 /* Dsp0/8/16 at bit offset 14. */
#define RX_RELAXA_BRA 0x00000200 /* Any type of branch (must be decoded). */
#define RX_RELAXA_RNUM 0x0000000f /* Number of associated relocations. */
/* These mark the place where alignment is requested, and the place where the filler bytes end. */
#define RX_RELAXA_ALIGN 0x10000000 /* Start alignment; the remaining bits are the alignment value. */
#define RX_RELAXA_ELIGN 0x20000000 /* End alignment; the remaining bits are the alignment value. */
#define RX_RELAXA_ANUM 0x00ffffff /* Alignment amount, in bytes (i.e. .balign). */
