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Retro68/binutils/bfd/elfxx-loongarch.c

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/* LoongArch-specific support for ELF.
Copyright (C) 2021-2022 Free Software Foundation, Inc.
Contributed by Loongson Ltd.
Based on RISC-V target.
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; see the file COPYING3. If not,
see <http://www.gnu.org/licenses/>. */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/loongarch.h"
#include "elfxx-loongarch.h"
#define ALL_ONES (~ (bfd_vma) 0)
typedef struct loongarch_reloc_howto_type_struct
{
/* The first must be reloc_howto_type! */
reloc_howto_type howto;
bfd_reloc_code_real_type bfd_type;
bool (*adjust_reloc_bits)(reloc_howto_type *, bfd_vma *);
}loongarch_reloc_howto_type;
#define LOONGARCH_DEFAULT_HOWTO(r_name) \
{ HOWTO (R_LARCH_##r_name, 0, 4, 32, false, 0, complain_overflow_signed, \
bfd_elf_generic_reloc, "R_LARCH_" #r_name, false, 0, ALL_ONES, \
false), BFD_RELOC_LARCH_##r_name, NULL }
#define LOONGARCH_HOWTO(type, right, size, bits, pcrel, left, ovf, func, \
name, inplace, src_mask, dst_mask, pcrel_off, btype, afunc) \
{ HOWTO(type, right, size, bits, pcrel, left, ovf, func, name, \
inplace, src_mask, dst_mask, pcrel_off), btype, afunc }
#define LOONGARCH_EMPTY_HOWTO(C) \
{ EMPTY_HOWTO(C), BFD_RELOC_NONE, NULL }
bool loongarch_gen_adjust_reloc_bits (reloc_howto_type *howto, bfd_vma *val);
bool loongarch_adjust_reloc_bits_l16_xx5_h5 (reloc_howto_type *howto,
bfd_vma *fix_val);
bool loongarch_adjust_reloc_bits_l16_h10 (reloc_howto_type *howto,
bfd_vma *val);
/* This does not include any relocation information, but should be
good enough for GDB or objdump to read the file. */
static loongarch_reloc_howto_type loongarch_howto_table[] =
{
/* No relocation. */
LOONGARCH_HOWTO (R_LARCH_NONE, /* type (0). */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_NONE", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_NONE, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
/* 32 bit relocation. */
LOONGARCH_HOWTO (R_LARCH_32, /* type (1). */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_32", /* name */
false, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_32, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
/* 64 bit relocation. */
LOONGARCH_HOWTO (R_LARCH_64, /* type (2). */
0, /* rightshift */
8, /* size */
64, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_64", /* name */
false, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_64, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_RELATIVE, /* type (3). */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_RELATIVE", /* name */
false, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_NONE, /* undefined? */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_COPY, /* type (4). */
0, /* rightshift */
0, /* this one is variable size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_COPY", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_NONE, /* undefined? */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_JUMP_SLOT, /* type (5). */
0, /* rightshift */
8, /* size */
64, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_JUMP_SLOT", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_NONE, /* undefined? */
NULL), /* adjust_reloc_bits */
/* Dynamic TLS relocations. */
LOONGARCH_HOWTO (R_LARCH_TLS_DTPMOD32, /* type (6). */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_TLS_DTPMOD32", /* name */
false, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_TLS_DTPMOD32, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_TLS_DTPMOD64, /* type (7). */
0, /* rightshift */
8, /* size */
64, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_TLS_DTPMOD64", /* name */
false, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_TLS_DTPMOD64, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_TLS_DTPREL32, /* type (8). */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_TLS_DTPREL32", /* name */
true, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_TLS_DTPREL32, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_TLS_DTPREL64, /* type (9). */
0, /* rightshift */
8, /* size */
64, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_TLS_DTPREL64", /* name */
true, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_TLS_DTPREL64, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_TLS_TPREL32, /* type (10). */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_TLS_TPREL32", /* name */
false, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_TLS_TPREL32, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_TLS_TPREL64, /* type (11). */
0, /* rightshift */
8, /* size */
64, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_TLS_TPREL64", /* name */
false, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_TLS_TPREL64, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_IRELATIVE, /* type (12). */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_LARCH_IRELATIVE", /* name */
false, /* partial_inplace */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_NONE, /* undefined? */
NULL), /* adjust_reloc_bits */
LOONGARCH_EMPTY_HOWTO(13),
LOONGARCH_EMPTY_HOWTO(14),
LOONGARCH_EMPTY_HOWTO(15),
LOONGARCH_EMPTY_HOWTO(16),
LOONGARCH_EMPTY_HOWTO(17),
LOONGARCH_EMPTY_HOWTO(18),
LOONGARCH_EMPTY_HOWTO(19),
LOONGARCH_HOWTO (R_LARCH_MARK_LA, /* type (20). */
0, /* rightshift. */
0, /* size. */
0, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_MARK_LA", /* name. */
false, /* partial_inplace. */
0, /* src_mask. */
0, /* dst_mask. */
false, /* pcrel_offset */
BFD_RELOC_LARCH_MARK_LA, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_MARK_PCREL, /* type (21). */
0, /* rightshift. */
0, /* size. */
0, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_MARK_PCREL", /* name. */
false, /* partial_inplace. */
0, /* src_mask. */
0, /* dst_mask. */
false, /* pcrel_offset */
BFD_RELOC_LARCH_MARK_PCREL, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_PUSH_PCREL, /* type (22). */
2, /* rightshift. */
4, /* size. */
32, /* bitsize. */
true /* FIXME: somewhat use this. */, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_PUSH_PCREL", /* name. */
false, /* partial_inplace. */
0x03ffffff, /* src_mask. */
0x03ffffff, /* dst_mask. */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_PUSH_PCREL, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
/* type 23-37. */
LOONGARCH_DEFAULT_HOWTO (SOP_PUSH_ABSOLUTE),
LOONGARCH_DEFAULT_HOWTO (SOP_PUSH_DUP),
LOONGARCH_DEFAULT_HOWTO (SOP_PUSH_GPREL),
LOONGARCH_DEFAULT_HOWTO (SOP_PUSH_TLS_TPREL),
LOONGARCH_DEFAULT_HOWTO (SOP_PUSH_TLS_GOT),
LOONGARCH_DEFAULT_HOWTO (SOP_PUSH_TLS_GD),
LOONGARCH_DEFAULT_HOWTO (SOP_PUSH_PLT_PCREL),
LOONGARCH_DEFAULT_HOWTO (SOP_ASSERT),
LOONGARCH_DEFAULT_HOWTO (SOP_NOT),
LOONGARCH_DEFAULT_HOWTO (SOP_SUB),
LOONGARCH_DEFAULT_HOWTO (SOP_SL),
LOONGARCH_DEFAULT_HOWTO (SOP_SR),
LOONGARCH_DEFAULT_HOWTO (SOP_ADD),
LOONGARCH_DEFAULT_HOWTO (SOP_AND),
LOONGARCH_DEFAULT_HOWTO (SOP_IF_ELSE),
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_10_5, /* type (38). */
0, /* rightshift. */
4, /* size. */
5, /* bitsize. */
false, /* pc_relative. */
10, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_10_5", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0x7c00, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_10_5, /* bfd_reloc_code_real_type */
loongarch_gen_adjust_reloc_bits), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_U_10_12, /* type (39). */
0, /* rightshift. */
4, /* size. */
12, /* bitsize. */
false, /* pc_relative. */
10, /* bitpos. */
complain_overflow_unsigned, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_U_10_12", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0x3ffc00, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_U_10_12, /* bfd_reloc_code_real_type */
loongarch_gen_adjust_reloc_bits), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_10_12, /* type (40). */
0, /* rightshift. */
4, /* size. */
12, /* bitsize. */
false, /* pc_relative. */
10, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_10_12", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0x3ffc00, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_10_12, /* bfd_reloc_code_real_type */
loongarch_gen_adjust_reloc_bits), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_10_16, /* type (41). */
0, /* rightshift. */
4, /* size. */
16, /* bitsize. */
false, /* pc_relative. */
10, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_10_16", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0x3fffc00, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_10_16, /* bfd_reloc_code_real_type */
loongarch_gen_adjust_reloc_bits), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_10_16_S2, /* type (42). */
2, /* rightshift. */
4, /* size. */
16, /* bitsize. */
false, /* pc_relative. */
10, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_10_16_S2", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0x3fffc00, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_10_16_S2, /* bfd_reloc_code_real_type */
loongarch_gen_adjust_reloc_bits), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_5_20, /* type (43). */
0, /* rightshift. */
4, /* size. */
20, /* bitsize. */
false, /* pc_relative. */
5, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_5_20", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0x1ffffe0, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_5_20, /* bfd_reloc_code_real_type */
loongarch_gen_adjust_reloc_bits), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_0_5_10_16_S2,
/* type (44). */
2, /* rightshift. */
4, /* size. */
21, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_0_5_10_16_S2", /* name. */
false, /* partial_inplace. */
0xfc0003e0, /* src_mask */
0xfc0003e0, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_0_5_10_16_S2,
/* bfd_reloc_code_real_type */
loongarch_adjust_reloc_bits_l16_xx5_h5), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_S_0_10_10_16_S2, /* type (45). */
2, /* rightshift. */
4, /* size. */
26, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_0_10_10_16_S2", /* name. */
false, /* partial_inplace. */
0xfc000000, /* src_mask */
0xfc000000, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_S_0_10_10_16_S2,
/* bfd_reloc_code_real_type */
loongarch_adjust_reloc_bits_l16_h10), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SOP_POP_32_U, /* type (46). */
0, /* rightshift. */
4, /* size. */
32, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_unsigned, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_U", /* name. */
false, /* partial_inplace. */
0xffffffff00000000, /* src_mask */
0x00000000ffffffff, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SOP_POP_32_U, /* bfd_reloc_code_real_type */
loongarch_gen_adjust_reloc_bits), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_ADD8, /* type (47). */
0, /* rightshift. */
4, /* size. */
8, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_ADD8", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_ADD8, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_ADD16, /* type (48). */
0, /* rightshift. */
4, /* size. */
16, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_ADD16", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_ADD16, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_ADD24, /* type (49). */
0, /* rightshift. */
4, /* size. */
24, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_ADD24", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_ADD24, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_ADD32, /* type (50). */
0, /* rightshift. */
4, /* size. */
32, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_ADD32", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_ADD32, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_ADD64, /* type (51). */
0, /* rightshift. */
8, /* size. */
64, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_ADD64", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_ADD64, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SUB8, /* type (52). */
0, /* rightshift. */
4, /* size. */
8, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SUB8", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SUB8, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SUB16, /* type (53). */
0, /* rightshift. */
4, /* size. */
16, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SUB16", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SUB16, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SUB24, /* type (54). */
0, /* rightshift. */
4, /* size. */
24, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SUB24", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SUB24, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SUB32, /* type (55). */
0, /* rightshift. */
4, /* size. */
32, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SUB32", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SUB32, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_SUB64, /* type (56). */
0, /* rightshift. */
8, /* size. */
64, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SUB64", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
ALL_ONES, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_LARCH_SUB64, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_GNU_VTINHERIT, /* type (57). */
0, /* rightshift. */
0, /* size. */
0, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_GNU_VTINHERIT", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_NONE, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
LOONGARCH_HOWTO (R_LARCH_GNU_VTENTRY, /* type (58). */
0, /* rightshift. */
0, /* size. */
0, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
NULL, /* special_function. */
"R_LARCH_GNU_VTENTRY", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0, /* dst_mask */
false, /* pcrel_offset */
BFD_RELOC_NONE, /* bfd_reloc_code_real_type */
NULL), /* adjust_reloc_bits */
};
reloc_howto_type *
loongarch_elf_rtype_to_howto (bfd *abfd, unsigned int r_type)
{
if(r_type < R_LARCH_count)
{
/* For search table fast. */
BFD_ASSERT (ARRAY_SIZE (loongarch_howto_table) == R_LARCH_count);
if (loongarch_howto_table[r_type].howto.type == r_type)
return (reloc_howto_type *)&loongarch_howto_table[r_type];
BFD_ASSERT (loongarch_howto_table[r_type].howto.type == r_type);
for (size_t i = 0; i < ARRAY_SIZE (loongarch_howto_table); i++)
if (loongarch_howto_table[i].howto.type == r_type)
return (reloc_howto_type *)&loongarch_howto_table[i];
}
(*_bfd_error_handler) (_("%pB: unsupported relocation type %#x"),
abfd, r_type);
bfd_set_error (bfd_error_bad_value);
return NULL;
}
reloc_howto_type *
loongarch_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
{
BFD_ASSERT (ARRAY_SIZE (loongarch_howto_table) == R_LARCH_count);
for (size_t i = 0; i < ARRAY_SIZE (loongarch_howto_table); i++)
if (loongarch_howto_table[i].howto.name
&& strcasecmp (loongarch_howto_table[i].howto.name, r_name) == 0)
return (reloc_howto_type *)&loongarch_howto_table[i];
(*_bfd_error_handler) (_("%pB: unsupported relocation type %s"),
abfd, r_name);
bfd_set_error (bfd_error_bad_value);
return NULL;
}
/* Cost so much. */
reloc_howto_type *
loongarch_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
BFD_ASSERT (ARRAY_SIZE (loongarch_howto_table) == R_LARCH_count);
for (size_t i = 0; i < ARRAY_SIZE (loongarch_howto_table); i++)
if (loongarch_howto_table[i].bfd_type == code)
return (reloc_howto_type *)&loongarch_howto_table[i];
(*_bfd_error_handler) (_("%pB: unsupported bfd relocation type %#x"),
abfd, code);
bfd_set_error (bfd_error_bad_value);
return NULL;
}
#define LARCH_RELOC_BFD_VMA_BIT_MASK(bitsize) \
(~((((bfd_vma)0x1) << (bitsize)) - 1))
/* Adjust val to perform insn
* BFD_RELOC_LARCH_SOP_POP_32_S_10_5
* BFD_RELOC_LARCH_SOP_POP_32_S_10_12
* BFD_RELOC_LARCH_SOP_POP_32_U_10_12
* BFD_RELOC_LARCH_SOP_POP_32_S_10_16
* BFD_RELOC_LARCH_SOP_POP_32_S_10_16_S2
* BFD_RELOC_LARCH_SOP_POP_32_S_5_20
* BFD_RELOC_LARCH_SOP_POP_32_U.
*/
bool loongarch_gen_adjust_reloc_bits (reloc_howto_type *howto, bfd_vma *fix_val)
{
bfd_vma val = *fix_val;
/* Check val low bits if rightshift != 0, before rightshift */
if (howto->rightshift
&& (((0x1UL << howto->rightshift) - 1) & val))
return false;
int bitsize = howto->bitsize + howto->rightshift;
/* Return false if overflow. */
if (howto->complain_on_overflow == complain_overflow_signed)
{
bfd_vma sig_bit = (val >> (bitsize - 1)) & 0x1;
/* If val < 0. */
if (sig_bit)
{
if ((LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
!= LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1))
return false;
}
else
{
if (LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
return false;
}
}
else if (howto->complain_on_overflow == complain_overflow_unsigned)
{
if (LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize) & val)
return false;
}
else
return false;
/* Perform insn bits field. */
val = (val & ((0x1U << bitsize) - 1)) >> howto->rightshift;
val <<= howto->bitpos;
*fix_val = val;
return true;
}
/* Reloc type R_LARCH_SOP_POP_32_S_0_5_10_16_S2. */
bool loongarch_adjust_reloc_bits_l16_xx5_h5 (reloc_howto_type *howto,
bfd_vma *fix_val)
{
bfd_vma val = *fix_val;
/* Check val low bits if rightshift != 0, before rightshift */
if (howto->rightshift
&& (((0x1UL << howto->rightshift) - 1) & val))
return false;
/* Return false if overflow. */
if (howto->complain_on_overflow != complain_overflow_signed)
return false;
int bitsize = howto->bitsize + howto->rightshift;
bfd_vma sig_bit = (val >> (bitsize - 1)) & 0x1;
/* If val < 0. */
if (sig_bit)
{
if ((LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
!= LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1))
return false;
}
else
{
if (LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
return false;
}
/* Perform insn bits field. */
val = (val & ((0x1U << bitsize) - 1)) >> howto->rightshift;
/* Perform insn bits field. 20:16>>16, 15:0<<10 */
val = ((val & 0xffff) << 10) | ((val >> 16) & 0x1f);
*fix_val = val;
return true;
}
/* Reloc type R_LARCH_SOP_POP_32_S_0_10_10_16_S2. */
bool loongarch_adjust_reloc_bits_l16_h10 (reloc_howto_type *howto,
bfd_vma *fix_val)
{
bfd_vma val = *fix_val;
/* Check val low bits if rightshift != 0, before rightshift */
if (howto->rightshift
&& (((0x1UL << howto->rightshift) - 1) & val))
return false;
/* Return false if overflow. */
if (howto->complain_on_overflow != complain_overflow_signed)
return false;
int bitsize = howto->bitsize + howto->rightshift;
bfd_vma sig_bit = (val >> (bitsize - 1)) & 0x1;
/* If val < 0. */
if (sig_bit)
{
if ((LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
!= LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1))
return false;
}
else
{
if (LARCH_RELOC_BFD_VMA_BIT_MASK (bitsize - 1) & val)
return false;
}
/* Perform insn bits field. */
val = (val & ((0x1U << bitsize) - 1)) >> howto->rightshift;
/* Perform insn bits field. 25:16>>16, 15:0<<10 */
val = ((val & 0xffff) << 10) | ((val >> 16) & 0x3ff);
*fix_val = val;
return true;
}
bool loongarch_adjust_reloc_bitsfield (reloc_howto_type *howto,
bfd_vma *fix_val)
{
BFD_ASSERT (((loongarch_reloc_howto_type *)howto)->adjust_reloc_bits);
return ((loongarch_reloc_howto_type *)
howto)->adjust_reloc_bits(howto, fix_val);
}
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