blob: a0de51f62354a2fb0e279581b4d483f5a0feddb7 [file] [log] [blame]
/* LoongArch-specific support for ELF.
Copyright (C) 2021 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)
/* This does not include any relocation information, but should be
good enough for GDB or objdump to read the file. */
static reloc_howto_type howto_table[] =
{
#define LOONGARCH_HOWTO(r_name) \
HOWTO (R_LARCH_##r_name, 0, 2, 32, false, 0, complain_overflow_signed, \
bfd_elf_generic_reloc, "R_LARCH_" #r_name, false, 0, 0xffffffff, false)
/* No relocation. */
HOWTO (R_LARCH_NONE, /* type (0). */
0, /* rightshift */
3, /* 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 */
/* 32 bit relocation. */
HOWTO (R_LARCH_32, /* type (1). */
0, /* rightshift */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
/* 64 bit relocation. */
HOWTO (R_LARCH_64, /* type (2). */
0, /* rightshift */
4, /* 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 */
HOWTO (R_LARCH_RELATIVE, /* type (3). */
0, /* rightshift */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
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 */
HOWTO (R_LARCH_JUMP_SLOT, /* type (5). */
0, /* rightshift */
4, /* 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 */
/* Dynamic TLS relocations. */
HOWTO (R_LARCH_TLS_DTPMOD32, /* type (6). */
0, /* rightshift */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_LARCH_TLS_DTPMOD64, /* type (7). */
0, /* rightshift */
4, /* 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 */
HOWTO (R_LARCH_TLS_DTPREL32, /* type (8). */
0, /* rightshift */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_LARCH_TLS_DTPREL64, /* type (9). */
0, /* rightshift */
4, /* 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 */
HOWTO (R_LARCH_TLS_TPREL32, /* type (10). */
0, /* rightshift */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_LARCH_TLS_TPREL64, /* type (11). */
0, /* rightshift */
4, /* 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 */
HOWTO (R_LARCH_IRELATIVE, /* type (12). */
0, /* rightshift */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
EMPTY_HOWTO(13),
EMPTY_HOWTO(14),
EMPTY_HOWTO(15),
EMPTY_HOWTO(16),
EMPTY_HOWTO(17),
EMPTY_HOWTO(18),
EMPTY_HOWTO(19),
HOWTO (R_LARCH_MARK_LA, /* type (20). */
0, /* rightshift. */
3, /* 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. */
HOWTO (R_LARCH_MARK_PCREL, /* type (21). */
0, /* rightshift. */
3, /* 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. */
HOWTO (R_LARCH_SOP_PUSH_PCREL, /* type (22). */
2, /* rightshift. */
2, /* 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. */
/* type 23-37. */
LOONGARCH_HOWTO (SOP_PUSH_ABSOLUTE),
LOONGARCH_HOWTO (SOP_PUSH_DUP),
LOONGARCH_HOWTO (SOP_PUSH_GPREL),
LOONGARCH_HOWTO (SOP_PUSH_TLS_TPREL),
LOONGARCH_HOWTO (SOP_PUSH_TLS_GOT),
LOONGARCH_HOWTO (SOP_PUSH_TLS_GD),
LOONGARCH_HOWTO (SOP_PUSH_PLT_PCREL),
LOONGARCH_HOWTO (SOP_ASSERT),
LOONGARCH_HOWTO (SOP_NOT),
LOONGARCH_HOWTO (SOP_SUB),
LOONGARCH_HOWTO (SOP_SL),
LOONGARCH_HOWTO (SOP_SR),
LOONGARCH_HOWTO (SOP_ADD),
LOONGARCH_HOWTO (SOP_AND),
LOONGARCH_HOWTO (SOP_IF_ELSE),
HOWTO (R_LARCH_SOP_POP_32_S_10_5, /* type (38). */
0, /* rightshift. */
2, /* 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. */
HOWTO (R_LARCH_SOP_POP_32_U_10_12, /* type (39). */
0, /* rightshift. */
2, /* 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_U_10_12", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0x3ffc00, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_SOP_POP_32_S_10_12, /* type (40). */
0, /* rightshift. */
2, /* 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. */
HOWTO (R_LARCH_SOP_POP_32_S_10_16, /* type (41). */
0, /* rightshift. */
2, /* 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. */
HOWTO (R_LARCH_SOP_POP_32_S_10_16_S2, /* type (42). */
2, /* rightshift. */
2, /* 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. */
HOWTO (R_LARCH_SOP_POP_32_S_5_20, /* type (43). */
0, /* rightshift. */
2, /* 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 */
0x1fffe0, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_SOP_POP_32_S_0_5_10_16_S2, /* type (44). */
2, /* rightshift. */
2, /* 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. */
HOWTO (R_LARCH_SOP_POP_32_S_0_10_10_16_S2, /* type (45). */
2, /* rightshift. */
2, /* 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. */
HOWTO (R_LARCH_SOP_POP_32_U, /* type (46). */
0, /* rightshift. */
2, /* size. */
32, /* bitsize. */
false, /* pc_relative. */
0, /* bitpos. */
complain_overflow_signed, /* complain_on_overflow. */
bfd_elf_generic_reloc, /* special_function. */
"R_LARCH_SOP_POP_32_S_U", /* name. */
false, /* partial_inplace. */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_ADD8, /* type (47). */
0, /* rightshift. */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_ADD16, /* type (48). */
0, /* rightshift. */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_ADD24, /* type (49). */
0, /* rightshift. */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_ADD32, /* type (50). */
0, /* rightshift. */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_ADD64, /* type (51). */
0, /* rightshift. */
4, /* 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. */
HOWTO (R_LARCH_SUB8, /* type (52). */
0, /* rightshift. */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_SUB16, /* type (53). */
0, /* rightshift. */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_SUB24, /* type (54). */
0, /* rightshift. */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_SUB32, /* type (55). */
0, /* rightshift. */
2, /* 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 */
0xffffffff, /* dst_mask */
false), /* pcrel_offset. */
HOWTO (R_LARCH_SUB64, /* type (56). */
0, /* rightshift. */
4, /* 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. */
};
struct elf_reloc_map
{
bfd_reloc_code_real_type bfd_val;
enum elf_loongarch_reloc_type elf_val;
};
static const struct elf_reloc_map larch_reloc_map[] =
{
{ BFD_RELOC_NONE, R_LARCH_NONE },
{ BFD_RELOC_32, R_LARCH_32 },
{ BFD_RELOC_64, R_LARCH_64 },
#define LOONGARCH_reloc_map(r_name) \
{ \
BFD_RELOC_LARCH_##r_name, R_LARCH_##r_name \
}
LOONGARCH_reloc_map (TLS_DTPMOD32),
LOONGARCH_reloc_map (TLS_DTPMOD64),
LOONGARCH_reloc_map (TLS_DTPREL32),
LOONGARCH_reloc_map (TLS_DTPREL64),
LOONGARCH_reloc_map (TLS_TPREL32),
LOONGARCH_reloc_map (TLS_TPREL64),
LOONGARCH_reloc_map (MARK_LA),
LOONGARCH_reloc_map (MARK_PCREL),
LOONGARCH_reloc_map (SOP_PUSH_PCREL),
LOONGARCH_reloc_map (SOP_PUSH_ABSOLUTE),
LOONGARCH_reloc_map (SOP_PUSH_DUP),
LOONGARCH_reloc_map (SOP_PUSH_GPREL),
LOONGARCH_reloc_map (SOP_PUSH_TLS_TPREL),
LOONGARCH_reloc_map (SOP_PUSH_TLS_GOT),
LOONGARCH_reloc_map (SOP_PUSH_TLS_GD),
LOONGARCH_reloc_map (SOP_PUSH_PLT_PCREL),
LOONGARCH_reloc_map (SOP_ASSERT),
LOONGARCH_reloc_map (SOP_NOT),
LOONGARCH_reloc_map (SOP_SUB),
LOONGARCH_reloc_map (SOP_SL),
LOONGARCH_reloc_map (SOP_SR),
LOONGARCH_reloc_map (SOP_ADD),
LOONGARCH_reloc_map (SOP_AND),
LOONGARCH_reloc_map (SOP_IF_ELSE),
LOONGARCH_reloc_map (SOP_POP_32_S_10_5),
LOONGARCH_reloc_map (SOP_POP_32_U_10_12),
LOONGARCH_reloc_map (SOP_POP_32_S_10_12),
LOONGARCH_reloc_map (SOP_POP_32_S_10_16),
LOONGARCH_reloc_map (SOP_POP_32_S_10_16_S2),
LOONGARCH_reloc_map (SOP_POP_32_S_5_20),
LOONGARCH_reloc_map (SOP_POP_32_S_0_5_10_16_S2),
LOONGARCH_reloc_map (SOP_POP_32_S_0_10_10_16_S2),
LOONGARCH_reloc_map (SOP_POP_32_U),
LOONGARCH_reloc_map (ADD8),
LOONGARCH_reloc_map (ADD16),
LOONGARCH_reloc_map (ADD24),
LOONGARCH_reloc_map (ADD32),
LOONGARCH_reloc_map (ADD64),
LOONGARCH_reloc_map (SUB8),
LOONGARCH_reloc_map (SUB16),
LOONGARCH_reloc_map (SUB24),
LOONGARCH_reloc_map (SUB32),
LOONGARCH_reloc_map (SUB64),
};
reloc_howto_type *
loongarch_elf_rtype_to_howto (bfd *abfd, unsigned int r_type)
{
size_t i;
for (i = 0; i < ARRAY_SIZE (howto_table); i++)
if (howto_table[i].type == r_type)
return &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_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (larch_reloc_map); i++)
if (larch_reloc_map[i].bfd_val == code)
return loongarch_elf_rtype_to_howto (abfd,
(int) larch_reloc_map[i].elf_val);
return NULL;
}
reloc_howto_type *
loongarch_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (howto_table); i++)
if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0)
return &howto_table[i];
return NULL;
}