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* ld-scripts/phdrs.exp: Expect to fail for the RX. * elf32-rx.c: Add support for PID mode. (rx_elf_relocate_section): Add checks for unsafe PID relocations. Include addend in R_RX_SYM relocations. * config/rx-defs.h (rx_pid_register): New. (rx_gp_register): New. * config/rx-parse.y (rx_lex): Add support for %gpreg and %pidreg. (displacement): Add PID support. * config/tc-rx.c (rx_pid_mode): New. (rx_num_int_regs): New. (rx_pid_register): New. (rx_gp_register): New. (options): Add -mpid and -mint-register= options. (md_longopts): Likewise. (md_parse_option): Likewise. (md_show_usage): Likewise. (rx_pid_symbol): New. (rx_pidreg_symbol): New. (rx_gpreg_symbol): New. (md_begin): Support PID. (rx_validate_fix_sub): Support PID. (tc_gen_reloc): Support PID. * doc/c-rx.texi: Document PID support. * rx.h (E_FLAG_RX_PID): New.
136 lines
6.4 KiB
C
136 lines
6.4 KiB
C
/* RX ELF support for BFD.
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Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef _ELF_RX_H
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#define _ELF_RX_H
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#include "elf/reloc-macros.h"
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/* Note that there are a few internal relocation types used by the
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linker to do link-time relaxation. If you update this file, please
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check elf32-rx.c to see if any of the internal relocations need to
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be, er, relocated. */
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/* Preliminary relocations. */
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START_RELOC_NUMBERS (elf_rx_reloc_type)
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RELOC_NUMBER (R_RX_NONE, 0x00)
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/* These are for data, and are bi-endian. */
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RELOC_NUMBER (R_RX_DIR32, 0x01) /* Was: R_RX_32. */
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RELOC_NUMBER (R_RX_DIR24S, 0x02) /* Was: R_RX_24. */
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RELOC_NUMBER (R_RX_DIR16, 0x03)
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RELOC_NUMBER (R_RX_DIR16U, 0x04) /* Was: R_RX_16_UNS. */
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RELOC_NUMBER (R_RX_DIR16S, 0x05) /* Was: R_RX_16. */
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RELOC_NUMBER (R_RX_DIR8, 0x06)
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RELOC_NUMBER (R_RX_DIR8U, 0x07) /* Was: R_RX_8_UNS. */
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RELOC_NUMBER (R_RX_DIR8S, 0x08) /* Was: R_RX_8. */
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/* Signed pc-relative values. */
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RELOC_NUMBER (R_RX_DIR24S_PCREL, 0x09) /* Was: R_RX_24_PCREL. */
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RELOC_NUMBER (R_RX_DIR16S_PCREL, 0x0a) /* Was: R_RX_16_PCREL. */
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RELOC_NUMBER (R_RX_DIR8S_PCREL, 0x0b) /* Was: R_RX_8_PCREL. */
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/* These are for fields in the instructions. */
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RELOC_NUMBER (R_RX_DIR16UL, 0x0c)
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RELOC_NUMBER (R_RX_DIR16UW, 0x0d)
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RELOC_NUMBER (R_RX_DIR8UL, 0x0e)
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RELOC_NUMBER (R_RX_DIR8UW, 0x0f)
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RELOC_NUMBER (R_RX_DIR32_REV, 0x10)
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RELOC_NUMBER (R_RX_DIR16_REV, 0x11)
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RELOC_NUMBER (R_RX_DIR3U_PCREL, 0x12)
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/* These are extensions added by Red Hat. */
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RELOC_NUMBER (R_RX_RH_3_PCREL, 0x20) /* Like R_RX_DIR8S_PCREL but only 3-bits. */
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RELOC_NUMBER (R_RX_RH_16_OP, 0x21) /* Like R_RX_DIR16 but for opcodes - always big endian. */
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RELOC_NUMBER (R_RX_RH_24_OP, 0x22) /* Like R_RX_DIR24S but for opcodes - always big endian. */
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RELOC_NUMBER (R_RX_RH_32_OP, 0x23) /* Like R_RX_DIR32 but for opcodes - always big endian. */
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RELOC_NUMBER (R_RX_RH_24_UNS, 0x24) /* Like R_RX_DIR24S but for unsigned values. */
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RELOC_NUMBER (R_RX_RH_8_NEG, 0x25) /* Like R_RX_DIR8 but -x is stored. */
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RELOC_NUMBER (R_RX_RH_16_NEG, 0x26) /* Like R_RX_DIR16 but -x is stored. */
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RELOC_NUMBER (R_RX_RH_24_NEG, 0x27) /* Like R_RX_DIR24S but -x is stored. */
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RELOC_NUMBER (R_RX_RH_32_NEG, 0x28) /* Like R_RX_DIR32 but -x is stored. */
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RELOC_NUMBER (R_RX_RH_DIFF, 0x29) /* Subtract from a previous relocation. */
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RELOC_NUMBER (R_RX_RH_GPRELB, 0x2a) /* Byte value, relative to __gp. */
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RELOC_NUMBER (R_RX_RH_GPRELW, 0x2b) /* Word value, relative to __gp. */
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RELOC_NUMBER (R_RX_RH_GPRELL, 0x2c) /* Long value, relative to __gp. */
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RELOC_NUMBER (R_RX_RH_RELAX, 0x2d) /* Marks opcodes suitable for linker relaxation. */
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/* These are for complex relocs. */
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RELOC_NUMBER (R_RX_ABS32, 0x41)
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RELOC_NUMBER (R_RX_ABS24S, 0x42)
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RELOC_NUMBER (R_RX_ABS16, 0x43)
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RELOC_NUMBER (R_RX_ABS16U, 0x44)
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RELOC_NUMBER (R_RX_ABS16S, 0x45)
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RELOC_NUMBER (R_RX_ABS8, 0x46)
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RELOC_NUMBER (R_RX_ABS8U, 0x47)
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RELOC_NUMBER (R_RX_ABS8S, 0x48)
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RELOC_NUMBER (R_RX_ABS24S_PCREL, 0x49)
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RELOC_NUMBER (R_RX_ABS16S_PCREL, 0x4a)
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RELOC_NUMBER (R_RX_ABS8S_PCREL, 0x4b)
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RELOC_NUMBER (R_RX_ABS16UL, 0x4c)
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RELOC_NUMBER (R_RX_ABS16UW, 0x4d)
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RELOC_NUMBER (R_RX_ABS8UL, 0x4e)
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RELOC_NUMBER (R_RX_ABS8UW, 0x4f)
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RELOC_NUMBER (R_RX_ABS32_REV, 0x50)
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RELOC_NUMBER (R_RX_ABS16_REV, 0x51)
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RELOC_NUMBER (R_RX_SYM, 0x80)
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RELOC_NUMBER (R_RX_OPneg, 0x81)
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RELOC_NUMBER (R_RX_OPadd, 0x82)
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RELOC_NUMBER (R_RX_OPsub, 0x83)
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RELOC_NUMBER (R_RX_OPmul, 0x84)
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RELOC_NUMBER (R_RX_OPdiv, 0x85)
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RELOC_NUMBER (R_RX_OPshla, 0x86)
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RELOC_NUMBER (R_RX_OPshra, 0x87)
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RELOC_NUMBER (R_RX_OPsctsize, 0x88)
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RELOC_NUMBER (R_RX_OPscttop, 0x8d)
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RELOC_NUMBER (R_RX_OPand, 0x90)
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RELOC_NUMBER (R_RX_OPor, 0x91)
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RELOC_NUMBER (R_RX_OPxor, 0x92)
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RELOC_NUMBER (R_RX_OPnot, 0x93)
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RELOC_NUMBER (R_RX_OPmod, 0x94)
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RELOC_NUMBER (R_RX_OPromtop, 0x95)
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RELOC_NUMBER (R_RX_OPramtop, 0x96)
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END_RELOC_NUMBERS (R_RX_max)
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#define EF_RX_CPU_RX 0x00000079 /* FIXME: correct value? */
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#define EF_RX_CPU_MASK 0x0000007F /* specific cpu bits. */
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#define EF_RX_ALL_FLAGS (EF_RX_CPU_MASK)
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/* Values for the e_flags field in the ELF header. */
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#define E_FLAG_RX_64BIT_DOUBLES (1 << 0)
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#define E_FLAG_RX_DSP (1 << 1) /* Defined in the RX CPU Object file specification, but not explained. */
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#define E_FLAG_RX_PID (1 << 2) /* Unofficial - DJ */
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/* These define the addend field of R_RX_RH_RELAX relocations. */
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#define RX_RELAXA_IMM6 0x00000010 /* Imm8/16/24/32 at bit offset 6. */
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#define RX_RELAXA_IMM12 0x00000020 /* Imm8/16/24/32 at bit offset 12. */
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#define RX_RELAXA_DSP4 0x00000040 /* Dsp0/8/16 at bit offset 4. */
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#define RX_RELAXA_DSP6 0x00000080 /* Dsp0/8/16 at bit offset 6. */
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#define RX_RELAXA_DSP14 0x00000100 /* Dsp0/8/16 at bit offset 14. */
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#define RX_RELAXA_BRA 0x00000200 /* Any type of branch (must be decoded). */
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#define RX_RELAXA_RNUM 0x0000000f /* Number of associated relocations. */
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/* These mark the place where alignment is requested, and the place where the filler bytes end. */
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#define RX_RELAXA_ALIGN 0x10000000 /* Start alignment; the remaining bits are the alignment value. */
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#define RX_RELAXA_ELIGN 0x20000000 /* End alignment; the remaining bits are the alignment value. */
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#define RX_RELAXA_ANUM 0x00ffffff /* Alignment amount, in bytes (i.e. .balign). */
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#endif /* _ELF_RX_H */
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