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gnu / binutils-gdb / b7ee8ec914c612587b080e9ad416315307f094fd / . / bfd / elf32-tic6x.c
blob: 5c00318cd152f140afd51356009c4be1ca1b5fb1 [file] [log] [blame]
/* 32-bit ELF support for TI C6X
Copyright (C) 2010-2024 Free Software Foundation, Inc.
Contributed by Joseph Myers <joseph@codesourcery.com>
Bernd Schmidt <bernds@codesourcery.com>
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. */
#include "sysdep.h"
#include <limits.h>
#include "bfd.h"
#include "libbfd.h"
#include "libiberty.h"
#include "elf-bfd.h"
#include "elf/tic6x.h"
#include "elf32-tic6x.h"
#define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
/* DSBT binaries have a default 128K stack. */
#define DEFAULT_STACK_SIZE 0x20000
/* The size in bytes of an entry in the procedure linkage table. */
#define PLT_ENTRY_SIZE 24
/* TI C6X ELF linker hash table. */
struct elf32_tic6x_link_hash_table
{
struct elf_link_hash_table elf;
/* C6X specific command line arguments. */
struct elf32_tic6x_params params;
/* The output BFD, for convenience. */
bfd *obfd;
/* The .dsbt section. */
asection *dsbt;
};
/* Get the TI C6X ELF linker hash table from a link_info structure. */
#define elf32_tic6x_hash_table(p) \
((struct elf32_tic6x_link_hash_table *) ((p)->hash))
typedef enum
{
DELETE_EXIDX_ENTRY,
INSERT_EXIDX_CANTUNWIND_AT_END
}
tic6x_unwind_edit_type;
/* A (sorted) list of edits to apply to an unwind table. */
typedef struct tic6x_unwind_table_edit
{
tic6x_unwind_edit_type type;
/* Note: we sometimes want to insert an unwind entry corresponding to a
section different from the one we're currently writing out, so record the
(text) section this edit relates to here. */
asection *linked_section;
unsigned int index;
struct tic6x_unwind_table_edit *next;
}
tic6x_unwind_table_edit;
typedef struct _tic6x_elf_section_data
{
/* Information about mapping symbols. */
struct bfd_elf_section_data elf;
/* Information about unwind tables. */
union
{
/* Unwind info attached to a text section. */
struct
{
asection *tic6x_exidx_sec;
} text;
/* Unwind info attached to an .c6xabi.exidx section. */
struct
{
tic6x_unwind_table_edit *unwind_edit_list;
tic6x_unwind_table_edit *unwind_edit_tail;
} exidx;
} u;
}
_tic6x_elf_section_data;
#define elf32_tic6x_section_data(sec) \
((_tic6x_elf_section_data *) elf_section_data (sec))
struct elf32_tic6x_obj_tdata
{
struct elf_obj_tdata root;
/* Whether to use RELA relocations when generating relocations.
This is a per-object flag to allow the assembler to generate REL
relocations for use in linker testcases. */
bool use_rela_p;
};
#define elf32_tic6x_tdata(abfd) \
((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any)
#define is_tic6x_elf(bfd) \
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
&& elf_tdata (bfd) != NULL \
&& elf_object_id (bfd) == TIC6X_ELF_DATA)
/* C6X ELF uses two common sections. One is the usual one, and the
other is for small objects. All the small objects are kept
together, and then referenced via the gp pointer, which yields
faster assembler code. This is what we use for the small common
section. This approach is copied from ecoff.c. */
static asection tic6x_elf_scom_section;
static const asymbol tic6x_elf_scom_symbol =
GLOBAL_SYM_INIT (".scommon", &tic6x_elf_scom_section);
static asection tic6x_elf_scom_section =
BFD_FAKE_SECTION (tic6x_elf_scom_section, &tic6x_elf_scom_symbol,
".scommon", 0, SEC_IS_COMMON | SEC_SMALL_DATA);
static reloc_howto_type elf32_tic6x_howto_table[] =
{
HOWTO (R_C6000_NONE, /* type */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_NONE", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS32, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS32", /* name */
false, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS16, /* type */
0, /* rightshift */
2, /* size */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS16", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS8, /* type */
0, /* rightshift */
1, /* size */
8, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS8", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x000000ff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_PCR_S21, /* type */
2, /* rightshift */
4, /* size */
21, /* bitsize */
true, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S21", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x0fffff80, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_PCR_S12, /* type */
2, /* rightshift */
4, /* size */
12, /* bitsize */
true, /* pc_relative */
16, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S12", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x0fff0000, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_PCR_S10, /* type */
2, /* rightshift */
4, /* size */
10, /* bitsize */
true, /* pc_relative */
13, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S10", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fe000, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_PCR_S7, /* type */
2, /* rightshift */
4, /* size */
7, /* bitsize */
true, /* pc_relative */
16, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S7", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007f0000, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_ABS_S16, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS_S16", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS_L16, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS_L16", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS_H16, /* type */
16, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS_H16", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_U15_B, /* type */
0, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_B", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_U15_H, /* type */
1, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_H", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_U15_W, /* type */
2, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_W", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_S16, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_S16", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_B, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_B", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_H, /* type */
1, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_H", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_W, /* type */
2, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_W", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_H16_B, /* type */
16, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_H16_B", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_H16_H, /* type */
17, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_H16_H", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_H16_W, /* type */
18, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_H16_W", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
2, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_GOT_U15_W",/* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
2, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_GOT_L16_W",/* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_GOT_H16_W, /* type */
18, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_GOT_H16_W",/* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_DSBT_INDEX, /* type */
0, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_DSBT_INDEX", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_PREL31, /* type */
1, /* rightshift */
4, /* size */
31, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PREL31", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x7fffffff, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_COPY, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_COPY", /* name */
false, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_JUMP_SLOT, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_JUMP_SLOT", /* name */
false, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_EHTYPE, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_EHTYPE", /* name */
false, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_PCR_H16, /* type */
16, /* rightshift */
4, /* size */
16, /* bitsize */
true, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_H16", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_PCR_L16, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
true, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_L16", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
true), /* pcrel_offset */
EMPTY_HOWTO (31),
EMPTY_HOWTO (32),
EMPTY_HOWTO (33),
EMPTY_HOWTO (34),
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EMPTY_HOWTO (219),
EMPTY_HOWTO (220),
EMPTY_HOWTO (221),
EMPTY_HOWTO (222),
EMPTY_HOWTO (223),
EMPTY_HOWTO (224),
EMPTY_HOWTO (225),
EMPTY_HOWTO (226),
EMPTY_HOWTO (227),
EMPTY_HOWTO (228),
EMPTY_HOWTO (229),
EMPTY_HOWTO (230),
EMPTY_HOWTO (231),
EMPTY_HOWTO (232),
EMPTY_HOWTO (233),
EMPTY_HOWTO (234),
EMPTY_HOWTO (235),
EMPTY_HOWTO (236),
EMPTY_HOWTO (237),
EMPTY_HOWTO (238),
EMPTY_HOWTO (239),
EMPTY_HOWTO (240),
EMPTY_HOWTO (241),
EMPTY_HOWTO (242),
EMPTY_HOWTO (243),
EMPTY_HOWTO (244),
EMPTY_HOWTO (245),
EMPTY_HOWTO (246),
EMPTY_HOWTO (247),
EMPTY_HOWTO (248),
EMPTY_HOWTO (249),
EMPTY_HOWTO (250),
EMPTY_HOWTO (251),
EMPTY_HOWTO (252),
HOWTO (R_C6000_ALIGN, /* type */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ALIGN", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_FPHEAD, /* type */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_FPHEAD", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_NOCMP, /* type */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_NOCMP", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false) /* pcrel_offset */
};
static reloc_howto_type elf32_tic6x_howto_table_rel[] =
{
HOWTO (R_C6000_NONE, /* type */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_NONE", /* name */
true, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS32, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS16, /* type */
0, /* rightshift */
2, /* size */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS16", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS8, /* type */
0, /* rightshift */
1, /* size */
8, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS8", /* name */
true, /* partial_inplace */
0x000000ff, /* src_mask */
0x000000ff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_PCR_S21, /* type */
2, /* rightshift */
4, /* size */
21, /* bitsize */
true, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S21", /* name */
true, /* partial_inplace */
0x0fffff80, /* src_mask */
0x0fffff80, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_PCR_S12, /* type */
2, /* rightshift */
4, /* size */
12, /* bitsize */
true, /* pc_relative */
16, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S12", /* name */
true, /* partial_inplace */
0x0fff0000, /* src_mask */
0x0fff0000, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_PCR_S10, /* type */
2, /* rightshift */
4, /* size */
10, /* bitsize */
true, /* pc_relative */
13, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S10", /* name */
true, /* partial_inplace */
0x007fe000, /* src_mask */
0x007fe000, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_PCR_S7, /* type */
2, /* rightshift */
4, /* size */
7, /* bitsize */
true, /* pc_relative */
16, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S7", /* name */
true, /* partial_inplace */
0x007f0000, /* src_mask */
0x007f0000, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_ABS_S16, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS_S16", /* name */
true, /* partial_inplace */
0x007fff80, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_ABS_L16, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS_L16", /* name */
true, /* partial_inplace */
0x007fff80, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
EMPTY_HOWTO (R_C6000_ABS_H16),
HOWTO (R_C6000_SBR_U15_B, /* type */
0, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_B", /* name */
true, /* partial_inplace */
0x007fff00, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_U15_H, /* type */
1, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_H", /* name */
true, /* partial_inplace */
0x007fff00, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_U15_W, /* type */
2, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_W", /* name */
true, /* partial_inplace */
0x007fff00, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_S16, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_S16", /* name */
true, /* partial_inplace */
0x007fff80, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_B, /* type */
0, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_B", /* name */
true, /* partial_inplace */
0x007fff80, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_H, /* type */
1, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_H", /* name */
true, /* partial_inplace */
0x007fff80, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_W, /* type */
2, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_W", /* name */
true, /* partial_inplace */
0x007fff80, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
EMPTY_HOWTO (R_C6000_SBR_H16_B),
EMPTY_HOWTO (R_C6000_SBR_H16_H),
EMPTY_HOWTO (R_C6000_SBR_H16_W),
HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
2, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_GOT_U15_W",/* name */
true, /* partial_inplace */
0x007fff00, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
2, /* rightshift */
4, /* size */
16, /* bitsize */
false, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_GOT_L16_W",/* name */
true, /* partial_inplace */
0x007fff80, /* src_mask */
0x007fff80, /* dst_mask */
false), /* pcrel_offset */
EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W),
HOWTO (R_C6000_DSBT_INDEX, /* type */
0, /* rightshift */
4, /* size */
15, /* bitsize */
false, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_DSBT_INDEX", /* name */
true, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_PREL31, /* type */
1, /* rightshift */
4, /* size */
31, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PREL31", /* name */
true, /* partial_inplace */
0, /* src_mask */
0x7fffffff, /* dst_mask */
true), /* pcrel_offset */
HOWTO (R_C6000_COPY, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_COPY", /* name */
true, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_JUMP_SLOT, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_JUMP_SLOT", /* name */
false, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_EHTYPE, /* type */
0, /* rightshift */
4, /* size */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_EHTYPE", /* name */
false, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
EMPTY_HOWTO (R_C6000_PCR_H16),
EMPTY_HOWTO (R_C6000_PCR_L16),
EMPTY_HOWTO (31),
EMPTY_HOWTO (32),
EMPTY_HOWTO (33),
EMPTY_HOWTO (34),
EMPTY_HOWTO (35),
EMPTY_HOWTO (36),
EMPTY_HOWTO (37),
EMPTY_HOWTO (38),
EMPTY_HOWTO (39),
EMPTY_HOWTO (40),
EMPTY_HOWTO (41),
EMPTY_HOWTO (42),
EMPTY_HOWTO (43),
EMPTY_HOWTO (44),
EMPTY_HOWTO (45),
EMPTY_HOWTO (46),
EMPTY_HOWTO (47),
EMPTY_HOWTO (48),
EMPTY_HOWTO (49),
EMPTY_HOWTO (50),
EMPTY_HOWTO (51),
EMPTY_HOWTO (52),
EMPTY_HOWTO (53),
EMPTY_HOWTO (54),
EMPTY_HOWTO (55),
EMPTY_HOWTO (56),
EMPTY_HOWTO (57),
EMPTY_HOWTO (58),
EMPTY_HOWTO (59),
EMPTY_HOWTO (60),
EMPTY_HOWTO (61),
EMPTY_HOWTO (62),
EMPTY_HOWTO (63),
EMPTY_HOWTO (64),
EMPTY_HOWTO (65),
EMPTY_HOWTO (66),
EMPTY_HOWTO (67),
EMPTY_HOWTO (68),
EMPTY_HOWTO (69),
EMPTY_HOWTO (70),
EMPTY_HOWTO (71),
EMPTY_HOWTO (72),
EMPTY_HOWTO (73),
EMPTY_HOWTO (74),
EMPTY_HOWTO (75),
EMPTY_HOWTO (76),
EMPTY_HOWTO (77),
EMPTY_HOWTO (78),
EMPTY_HOWTO (79),
EMPTY_HOWTO (80),
EMPTY_HOWTO (81),
EMPTY_HOWTO (82),
EMPTY_HOWTO (83),
EMPTY_HOWTO (84),
EMPTY_HOWTO (85),
EMPTY_HOWTO (86),
EMPTY_HOWTO (87),
EMPTY_HOWTO (88),
EMPTY_HOWTO (89),
EMPTY_HOWTO (90),
EMPTY_HOWTO (91),
EMPTY_HOWTO (92),
EMPTY_HOWTO (93),
EMPTY_HOWTO (94),
EMPTY_HOWTO (95),
EMPTY_HOWTO (96),
EMPTY_HOWTO (97),
EMPTY_HOWTO (98),
EMPTY_HOWTO (99),
EMPTY_HOWTO (100),
EMPTY_HOWTO (101),
EMPTY_HOWTO (102),
EMPTY_HOWTO (103),
EMPTY_HOWTO (104),
EMPTY_HOWTO (105),
EMPTY_HOWTO (106),
EMPTY_HOWTO (107),
EMPTY_HOWTO (108),
EMPTY_HOWTO (109),
EMPTY_HOWTO (110),
EMPTY_HOWTO (111),
EMPTY_HOWTO (112),
EMPTY_HOWTO (113),
EMPTY_HOWTO (114),
EMPTY_HOWTO (115),
EMPTY_HOWTO (116),
EMPTY_HOWTO (117),
EMPTY_HOWTO (118),
EMPTY_HOWTO (119),
EMPTY_HOWTO (120),
EMPTY_HOWTO (121),
EMPTY_HOWTO (122),
EMPTY_HOWTO (123),
EMPTY_HOWTO (124),
EMPTY_HOWTO (125),
EMPTY_HOWTO (126),
EMPTY_HOWTO (127),
EMPTY_HOWTO (128),
EMPTY_HOWTO (129),
EMPTY_HOWTO (130),
EMPTY_HOWTO (131),
EMPTY_HOWTO (132),
EMPTY_HOWTO (133),
EMPTY_HOWTO (134),
EMPTY_HOWTO (135),
EMPTY_HOWTO (136),
EMPTY_HOWTO (137),
EMPTY_HOWTO (138),
EMPTY_HOWTO (139),
EMPTY_HOWTO (140),
EMPTY_HOWTO (141),
EMPTY_HOWTO (142),
EMPTY_HOWTO (143),
EMPTY_HOWTO (144),
EMPTY_HOWTO (145),
EMPTY_HOWTO (146),
EMPTY_HOWTO (147),
EMPTY_HOWTO (148),
EMPTY_HOWTO (149),
EMPTY_HOWTO (150),
EMPTY_HOWTO (151),
EMPTY_HOWTO (152),
EMPTY_HOWTO (153),
EMPTY_HOWTO (154),
EMPTY_HOWTO (155),
EMPTY_HOWTO (156),
EMPTY_HOWTO (157),
EMPTY_HOWTO (158),
EMPTY_HOWTO (159),
EMPTY_HOWTO (160),
EMPTY_HOWTO (161),
EMPTY_HOWTO (162),
EMPTY_HOWTO (163),
EMPTY_HOWTO (164),
EMPTY_HOWTO (165),
EMPTY_HOWTO (166),
EMPTY_HOWTO (167),
EMPTY_HOWTO (168),
EMPTY_HOWTO (169),
EMPTY_HOWTO (170),
EMPTY_HOWTO (171),
EMPTY_HOWTO (172),
EMPTY_HOWTO (173),
EMPTY_HOWTO (174),
EMPTY_HOWTO (175),
EMPTY_HOWTO (176),
EMPTY_HOWTO (177),
EMPTY_HOWTO (178),
EMPTY_HOWTO (179),
EMPTY_HOWTO (180),
EMPTY_HOWTO (181),
EMPTY_HOWTO (182),
EMPTY_HOWTO (183),
EMPTY_HOWTO (184),
EMPTY_HOWTO (185),
EMPTY_HOWTO (186),
EMPTY_HOWTO (187),
EMPTY_HOWTO (188),
EMPTY_HOWTO (189),
EMPTY_HOWTO (190),
EMPTY_HOWTO (191),
EMPTY_HOWTO (192),
EMPTY_HOWTO (193),
EMPTY_HOWTO (194),
EMPTY_HOWTO (195),
EMPTY_HOWTO (196),
EMPTY_HOWTO (197),
EMPTY_HOWTO (198),
EMPTY_HOWTO (199),
EMPTY_HOWTO (200),
EMPTY_HOWTO (201),
EMPTY_HOWTO (202),
EMPTY_HOWTO (203),
EMPTY_HOWTO (204),
EMPTY_HOWTO (205),
EMPTY_HOWTO (206),
EMPTY_HOWTO (207),
EMPTY_HOWTO (208),
EMPTY_HOWTO (209),
EMPTY_HOWTO (210),
EMPTY_HOWTO (211),
EMPTY_HOWTO (212),
EMPTY_HOWTO (213),
EMPTY_HOWTO (214),
EMPTY_HOWTO (215),
EMPTY_HOWTO (216),
EMPTY_HOWTO (217),
EMPTY_HOWTO (218),
EMPTY_HOWTO (219),
EMPTY_HOWTO (220),
EMPTY_HOWTO (221),
EMPTY_HOWTO (222),
EMPTY_HOWTO (223),
EMPTY_HOWTO (224),
EMPTY_HOWTO (225),
EMPTY_HOWTO (226),
EMPTY_HOWTO (227),
EMPTY_HOWTO (228),
EMPTY_HOWTO (229),
EMPTY_HOWTO (230),
EMPTY_HOWTO (231),
EMPTY_HOWTO (232),
EMPTY_HOWTO (233),
EMPTY_HOWTO (234),
EMPTY_HOWTO (235),
EMPTY_HOWTO (236),
EMPTY_HOWTO (237),
EMPTY_HOWTO (238),
EMPTY_HOWTO (239),
EMPTY_HOWTO (240),
EMPTY_HOWTO (241),
EMPTY_HOWTO (242),
EMPTY_HOWTO (243),
EMPTY_HOWTO (244),
EMPTY_HOWTO (245),
EMPTY_HOWTO (246),
EMPTY_HOWTO (247),
EMPTY_HOWTO (248),
EMPTY_HOWTO (249),
EMPTY_HOWTO (250),
EMPTY_HOWTO (251),
EMPTY_HOWTO (252),
HOWTO (R_C6000_ALIGN, /* type */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ALIGN", /* name */
true, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_FPHEAD, /* type */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_FPHEAD", /* name */
true, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
HOWTO (R_C6000_NOCMP, /* type */
0, /* rightshift */
0, /* size */
0, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_NOCMP", /* name */
true, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false) /* pcrel_offset */
};
/* Map BFD relocations to ELF relocations. */
typedef struct
{
bfd_reloc_code_real_type bfd_reloc_val;
enum elf_tic6x_reloc_type elf_reloc_val;
} tic6x_reloc_map;
static const tic6x_reloc_map elf32_tic6x_reloc_map[] =
{
{ BFD_RELOC_NONE, R_C6000_NONE },
{ BFD_RELOC_32, R_C6000_ABS32 },
{ BFD_RELOC_16, R_C6000_ABS16 },
{ BFD_RELOC_8, R_C6000_ABS8 },
{ BFD_RELOC_C6000_PCR_S21, R_C6000_PCR_S21 },
{ BFD_RELOC_C6000_PCR_S12, R_C6000_PCR_S12 },
{ BFD_RELOC_C6000_PCR_S10, R_C6000_PCR_S10 },
{ BFD_RELOC_C6000_PCR_S7, R_C6000_PCR_S7 },
{ BFD_RELOC_C6000_ABS_S16, R_C6000_ABS_S16 },
{ BFD_RELOC_C6000_ABS_L16, R_C6000_ABS_L16 },
{ BFD_RELOC_C6000_ABS_H16, R_C6000_ABS_H16 },
{ BFD_RELOC_C6000_SBR_U15_B, R_C6000_SBR_U15_B },
{ BFD_RELOC_C6000_SBR_U15_H, R_C6000_SBR_U15_H },
{ BFD_RELOC_C6000_SBR_U15_W, R_C6000_SBR_U15_W },
{ BFD_RELOC_C6000_SBR_S16, R_C6000_SBR_S16 },
{ BFD_RELOC_C6000_SBR_L16_B, R_C6000_SBR_L16_B },
{ BFD_RELOC_C6000_SBR_L16_H, R_C6000_SBR_L16_H },
{ BFD_RELOC_C6000_SBR_L16_W, R_C6000_SBR_L16_W },
{ BFD_RELOC_C6000_SBR_H16_B, R_C6000_SBR_H16_B },
{ BFD_RELOC_C6000_SBR_H16_H, R_C6000_SBR_H16_H },
{ BFD_RELOC_C6000_SBR_H16_W, R_C6000_SBR_H16_W },
{ BFD_RELOC_C6000_SBR_GOT_U15_W, R_C6000_SBR_GOT_U15_W },
{ BFD_RELOC_C6000_SBR_GOT_L16_W, R_C6000_SBR_GOT_L16_W },
{ BFD_RELOC_C6000_SBR_GOT_H16_W, R_C6000_SBR_GOT_H16_W },
{ BFD_RELOC_C6000_DSBT_INDEX, R_C6000_DSBT_INDEX },
{ BFD_RELOC_C6000_PREL31, R_C6000_PREL31 },
{ BFD_RELOC_C6000_COPY, R_C6000_COPY },
{ BFD_RELOC_C6000_JUMP_SLOT, R_C6000_JUMP_SLOT },
{ BFD_RELOC_C6000_EHTYPE, R_C6000_EHTYPE },
{ BFD_RELOC_C6000_PCR_H16, R_C6000_PCR_H16 },
{ BFD_RELOC_C6000_PCR_L16, R_C6000_PCR_L16 },
{ BFD_RELOC_C6000_ALIGN, R_C6000_ALIGN },
{ BFD_RELOC_C6000_FPHEAD, R_C6000_FPHEAD },
{ BFD_RELOC_C6000_NOCMP, R_C6000_NOCMP }
};
static reloc_howto_type *
elf32_tic6x_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (elf32_tic6x_reloc_map); i++)
if (elf32_tic6x_reloc_map[i].bfd_reloc_val == code)
{
enum elf_tic6x_reloc_type elf_reloc_val;
reloc_howto_type *howto;
elf_reloc_val = elf32_tic6x_reloc_map[i].elf_reloc_val;
if (elf32_tic6x_tdata (abfd)->use_rela_p)
howto = &elf32_tic6x_howto_table[elf_reloc_val];
else
howto = &elf32_tic6x_howto_table_rel[elf_reloc_val];
/* Some relocations are RELA-only; do not return them for
REL. */
if (howto->name == NULL)
howto = NULL;
return howto;
}
return NULL;
}
static reloc_howto_type *
elf32_tic6x_reloc_name_lookup (bfd *abfd, const char *r_name)
{
if (elf32_tic6x_tdata (abfd)->use_rela_p)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table); i++)
if (elf32_tic6x_howto_table[i].name != NULL
&& strcasecmp (elf32_tic6x_howto_table[i].name, r_name) == 0)
return &elf32_tic6x_howto_table[i];
}
else
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table_rel); i++)
if (elf32_tic6x_howto_table_rel[i].name != NULL
&& strcasecmp (elf32_tic6x_howto_table_rel[i].name, r_name) == 0)
return &elf32_tic6x_howto_table_rel[i];
}
return NULL;
}
static bool
elf32_tic6x_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
Elf_Internal_Rela *elf_reloc)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (elf_reloc->r_info);
if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table))
{
/* xgettext:c-format */
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
abfd, r_type);
bfd_set_error (bfd_error_bad_value);
return false;
}
bfd_reloc->howto = &elf32_tic6x_howto_table[r_type];
if (bfd_reloc->howto == NULL || bfd_reloc->howto->name == NULL)
{
/* xgettext:c-format */
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
abfd, r_type);
bfd_set_error (bfd_error_bad_value);
return false;
}
return true;
}
static bool
elf32_tic6x_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
Elf_Internal_Rela *elf_reloc)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (elf_reloc->r_info);
if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table_rel))
{
/* xgettext:c-format */
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
abfd, r_type);
bfd_set_error (bfd_error_bad_value);
return false;
}
bfd_reloc->howto = &elf32_tic6x_howto_table_rel[r_type];
if (bfd_reloc->howto == NULL || bfd_reloc->howto->name == NULL)
{
/* xgettext:c-format */
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
abfd, r_type);
bfd_set_error (bfd_error_bad_value);
return false;
}
return true;
}
void
elf32_tic6x_set_use_rela_p (bfd *abfd, bool use_rela_p)
{
elf32_tic6x_tdata (abfd)->use_rela_p = use_rela_p;
}
/* Create a C6X ELF linker hash table. */
static struct bfd_link_hash_table *
elf32_tic6x_link_hash_table_create (bfd *abfd)
{
struct elf32_tic6x_link_hash_table *ret;
size_t amt = sizeof (struct elf32_tic6x_link_hash_table);
ret = bfd_zmalloc (amt);
if (ret == NULL)
return NULL;
if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
_bfd_elf_link_hash_newfunc,
sizeof (struct elf_link_hash_entry),
TIC6X_ELF_DATA))
{
free (ret);
return NULL;
}
ret->obfd = abfd;
ret->elf.is_relocatable_executable = 1;
return &ret->elf.root;
}
static bool
elf32_tic6x_final_link (bfd *abfd, struct bfd_link_info *info)
{
if (bfd_link_pic (info))
{
obj_attribute *out_attr;
out_attr = elf_known_obj_attributes_proc (abfd);
if (out_attr[Tag_ABI_PIC].i == 0)
{
_bfd_error_handler (_("warning: generating a shared library "
"containing non-PIC code"));
}
if (out_attr[Tag_ABI_PID].i == 0)
{
_bfd_error_handler (_("warning: generating a shared library "
"containing non-PID code"));
}
}
/* Invoke the regular ELF backend linker to do all the work. */
if (!bfd_elf_final_link (abfd, info))
return false;
return true;
}
/* Called to pass PARAMS to the backend. We store them in the hash table
associated with INFO. */
void
elf32_tic6x_setup (struct bfd_link_info *info,
struct elf32_tic6x_params *params)
{
struct elf32_tic6x_link_hash_table *htab = elf32_tic6x_hash_table (info);
htab->params = *params;
}
/* Determine if we're dealing with a DSBT object. */
static bool
elf32_tic6x_using_dsbt (bfd *abfd)
{
return bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC,
Tag_ABI_DSBT);
}
/* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
sections in DYNOBJ, and set up shortcuts to them in our hash
table. */
static bool
elf32_tic6x_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
{
struct elf32_tic6x_link_hash_table *htab;
flagword flags;
htab = elf32_tic6x_hash_table (info);
if (htab == NULL)
return false;
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
return false;
/* Create .dsbt */
flags = (SEC_ALLOC | SEC_LOAD
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
htab->dsbt = bfd_make_section_anyway_with_flags (dynobj, ".dsbt",
flags);
if (htab->dsbt == NULL
|| !bfd_set_section_alignment (htab->dsbt, 2)
|| !bfd_set_section_alignment (htab->elf.splt, 5))
return false;
return true;
}
static bool
elf32_tic6x_mkobject (bfd *abfd)
{
bool ret;
ret = bfd_elf_allocate_object (abfd, sizeof (struct elf32_tic6x_obj_tdata),
TIC6X_ELF_DATA);
if (ret)
elf32_tic6x_set_use_rela_p (abfd, true);
return ret;
}
/* Install relocation RELA into section SRELA, incrementing its
reloc_count. */
static void
elf32_tic6x_install_rela (bfd *output_bfd, asection *srela,
Elf_Internal_Rela *rela)
{
bfd_byte *loc;
bfd_vma off = srela->reloc_count++ * sizeof (Elf32_External_Rela);
loc = srela->contents + off;
BFD_ASSERT (off < srela->size);
bfd_elf32_swap_reloca_out (output_bfd, rela, loc);
}
/* Create a dynamic reloc against the GOT at offset OFFSET. The contents
of the GOT at this offset have been initialized with the relocation. */
static void
elf32_tic6x_make_got_dynreloc (bfd *output_bfd,
struct elf32_tic6x_link_hash_table *htab,
asection *sym_sec, bfd_vma offset)
{
asection *sgot = htab->elf.sgot;
Elf_Internal_Rela outrel;
int dynindx;
outrel.r_offset = sgot->output_section->vma + sgot->output_offset + offset;
outrel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
if (sym_sec && sym_sec->output_section
&& ! bfd_is_abs_section (sym_sec->output_section)
&& ! bfd_is_und_section (sym_sec->output_section))
{
dynindx = elf_section_data (sym_sec->output_section)->dynindx;
outrel.r_addend -= sym_sec->output_section->vma;
}
else
{
dynindx = 0;
}
outrel.r_info = ELF32_R_INFO (dynindx, R_C6000_ABS32);
elf32_tic6x_install_rela (output_bfd, htab->elf.srelgot, &outrel);
}
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
static bool
elf32_tic6x_finish_dynamic_symbol (bfd * output_bfd,
struct bfd_link_info *info,
struct elf_link_hash_entry *h,
Elf_Internal_Sym * sym)
{
struct elf32_tic6x_link_hash_table *htab;
htab = elf32_tic6x_hash_table (info);
if (h->plt.offset != (bfd_vma) -1)
{
bfd_vma plt_index;
bfd_vma got_section_offset, got_dp_offset, rela_offset;
Elf_Internal_Rela rela;
bfd_byte *loc;
asection *plt, *gotplt, *relplt;
const struct elf_backend_data *bed;
bed = get_elf_backend_data (output_bfd);
BFD_ASSERT (htab->elf.splt != NULL);
plt = htab->elf.splt;
gotplt = htab->elf.sgotplt;
relplt = htab->elf.srelplt;
/* This symbol has an entry in the procedure linkage table. Set
it up. */
if ((h->dynindx == -1
&& !((h->forced_local || bfd_link_executable (info))
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
|| plt == NULL
|| gotplt == NULL
|| relplt == NULL)
abort ();
/* Get the index in the procedure linkage table which
corresponds to this symbol. This is the index of this symbol
in all the symbols for which we are making plt entries. The
first entry in the procedure linkage table is reserved.
Get the offset into the .got table of the entry that
corresponds to this function. Each .got entry is 4 bytes.
The first three are reserved.
For static executables, we don't reserve anything. */
plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
got_section_offset = plt_index + bed->got_header_size / 4;
got_dp_offset = got_section_offset + htab->params.dsbt_size;
rela_offset = plt_index * sizeof (Elf32_External_Rela);
got_section_offset *= 4;
/* Fill in the entry in the procedure linkage table. */
/* ldw .d2t2 *+B14($GOT(f)), b2 */
bfd_put_32 (output_bfd, got_dp_offset << 8 | 0x0100006e,
plt->contents + h->plt.offset);
/* mvk .s2 low(rela_offset), b0 */
bfd_put_32 (output_bfd, (rela_offset & 0xffff) << 7 | 0x0000002a,
plt->contents + h->plt.offset + 4);
/* mvkh .s2 high(rela_offset), b0 */
bfd_put_32 (output_bfd, ((rela_offset >> 16) & 0xffff) << 7 | 0x0000006a,
plt->contents + h->plt.offset + 8);
/* nop 2 */
bfd_put_32 (output_bfd, 0x00002000,
plt->contents + h->plt.offset + 12);
/* b .s2 b2 */
bfd_put_32 (output_bfd, 0x00080362,
plt->contents + h->plt.offset + 16);
/* nop 5 */
bfd_put_32 (output_bfd, 0x00008000,
plt->contents + h->plt.offset + 20);
/* Fill in the entry in the global offset table. */
bfd_put_32 (output_bfd,
(plt->output_section->vma + plt->output_offset),
gotplt->contents + got_section_offset);
/* Fill in the entry in the .rel.plt section. */
rela.r_offset = (gotplt->output_section->vma
+ gotplt->output_offset
+ got_section_offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_C6000_JUMP_SLOT);
rela.r_addend = 0;
loc = relplt->contents + rela_offset;
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
if (!h->def_regular)
{
/* Mark the symbol as undefined, rather than as defined in
the .plt section. */
sym->st_shndx = SHN_UNDEF;
sym->st_value = 0;
}
}
if (h->got.offset != (bfd_vma) -1)
{
asection *sgot;
asection *srela;
/* This symbol has an entry in the global offset table.
Set it up. */
sgot = htab->elf.sgot;
srela = htab->elf.srelgot;
BFD_ASSERT (sgot != NULL && srela != NULL);
/* If this is a -Bsymbolic link, and the symbol is defined
locally, we just want to emit a RELATIVE reloc. Likewise if
the symbol was forced to be local because of a version file.
The entry in the global offset table will already have been
initialized in the relocate_section function. */
if (bfd_link_pic (info)
&& (SYMBOLIC_BIND (info, h)
|| h->dynindx == -1 || h->forced_local) && h->def_regular)
{
asection *s = h->root.u.def.section;
elf32_tic6x_make_got_dynreloc (output_bfd, htab, s,
h->got.offset & ~(bfd_vma) 1);
}
else
{
Elf_Internal_Rela outrel;
bfd_put_32 (output_bfd, (bfd_vma) 0,
sgot->contents + (h->got.offset & ~(bfd_vma) 1));
outrel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
+ (h->got.offset & ~(bfd_vma) 1));
outrel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_ABS32);
outrel.r_addend = 0;
elf32_tic6x_install_rela (output_bfd, srela, &outrel);
}
}
if (h->needs_copy)
{
Elf_Internal_Rela rel;
asection *s;
/* This symbol needs a copy reloc. Set it up. */
if (h->dynindx == -1
|| (h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak)
|| htab->elf.srelbss == NULL
|| htab->elf.sreldynrelro == NULL)
abort ();
rel.r_offset = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
rel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_COPY);
rel.r_addend = 0;
if (h->root.u.def.section == htab->elf.sdynrelro)
s = htab->elf.sreldynrelro;
else
s = htab->elf.srelbss;
elf32_tic6x_install_rela (output_bfd, s, &rel);
}
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
if (h == elf_hash_table (info)->hdynamic
|| h == elf_hash_table (info)->hgot)
sym->st_shndx = SHN_ABS;
return true;
}
/* Unwinding tables are not referenced directly. This pass marks them as
required if the corresponding code section is marked. */
static bool
elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info *info,
elf_gc_mark_hook_fn gc_mark_hook)
{
bfd *sub;
Elf_Internal_Shdr **elf_shdrp;
bool again;
_bfd_elf_gc_mark_extra_sections (info, gc_mark_hook);
/* Marking EH data may cause additional code sections to be marked,
requiring multiple passes. */
again = true;
while (again)
{
again = false;
for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
{
asection *o;
if (! is_tic6x_elf (sub))
continue;
elf_shdrp = elf_elfsections (sub);
for (o = sub->sections; o != NULL; o = o->next)
{
Elf_Internal_Shdr *hdr;
hdr = &elf_section_data (o)->this_hdr;
if (hdr->sh_type == SHT_C6000_UNWIND
&& hdr->sh_link
&& hdr->sh_link < elf_numsections (sub)
&& !o->gc_mark
&& elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
{
again = true;
if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
return false;
}
}
}
}
return true;
}
/* Return TRUE if this is an unwinding table index. */
static bool
is_tic6x_elf_unwind_section_name (const char *name)
{
return (startswith (name, ELF_STRING_C6000_unwind)
|| startswith (name, ELF_STRING_C6000_unwind_once));
}
/* Set the type and flags for an unwinding index table. We do this by
the section name, which is a hack, but ought to work. */
static bool
elf32_tic6x_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
Elf_Internal_Shdr *hdr, asection *sec)
{
const char * name;
name = bfd_section_name (sec);
if (is_tic6x_elf_unwind_section_name (name))
{
hdr->sh_type = SHT_C6000_UNWIND;
hdr->sh_flags |= SHF_LINK_ORDER;
}
return true;
}
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
change the definition to something the rest of the link can
understand. */
static bool
elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info *info,
struct elf_link_hash_entry *h)
{
struct elf32_tic6x_link_hash_table *htab;
bfd *dynobj;
asection *s, *srel;
dynobj = elf_hash_table (info)->dynobj;
/* Make sure we know what is going on here. */
BFD_ASSERT (dynobj != NULL
&& (h->needs_plt
|| h->is_weakalias
|| (h->def_dynamic && h->ref_regular && !h->def_regular)));
/* If this is a function, put it in the procedure linkage table. We
will fill in the contents of the procedure linkage table later,
when we know the address of the .got section. */
if (h->type == STT_FUNC
|| h->needs_plt)
{
if (h->plt.refcount <= 0
|| SYMBOL_CALLS_LOCAL (info, h)
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& h->root.type == bfd_link_hash_undefweak))
{
/* This case can occur if we saw a PLT32 reloc in an input
file, but the symbol was never referred to by a dynamic
object, or if all references were garbage collected. In
such a case, we don't actually need to build a procedure
linkage table, and we can just do a PC32 reloc instead. */
h->plt.offset = (bfd_vma) -1;
h->needs_plt = 0;
}
return true;
}
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
if (h->is_weakalias)
{
struct elf_link_hash_entry *def = weakdef (h);
BFD_ASSERT (def->root.type == bfd_link_hash_defined);
h->root.u.def.section = def->root.u.def.section;
h->root.u.def.value = def->root.u.def.value;
h->non_got_ref = def->non_got_ref;
return true;
}
/* This is a reference to a symbol defined by a dynamic object which
is not a function. */
/* If we are creating a shared library, we must presume that the
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
if (bfd_link_pic (info))
return true;
/* If there are no references to this symbol that do not use the
GOT, we don't need to generate a copy reloc. */
if (!h->non_got_ref)
return true;
/* If -z nocopyreloc was given, we won't generate them either. */
if (info->nocopyreloc)
{
h->non_got_ref = 0;
return true;
}
htab = elf32_tic6x_hash_table (info);
if (htab == NULL)
return false;
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
object will contain position independent code, so all references
from the dynamic object to this symbol will go through the global
offset table. The dynamic linker will use the .dynsym entry to
determine the address it must put in the global offset table, so
both the dynamic object and the regular object will refer to the
same memory location for the variable. */
/* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
copy the initial value out of the dynamic object and into the
runtime process image. */
if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
{
s = htab->elf.sdynrelro;
srel = htab->elf.sreldynrelro;
}
else
{
s = htab->elf.sdynbss;
srel = htab->elf.srelbss;
}
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
{
srel->size += sizeof (Elf32_External_Rela);
h->needs_copy = 1;
}
return _bfd_elf_adjust_dynamic_copy (info, h, s);
}
static bool
elf32_tic6x_new_section_hook (bfd *abfd, asection *sec)
{
bool ret;
/* Allocate target specific section data. */
if (!sec->used_by_bfd)
{
_tic6x_elf_section_data *sdata;
size_t amt = sizeof (*sdata);
sdata = (_tic6x_elf_section_data *) bfd_zalloc (abfd, amt);
if (sdata == NULL)
return false;
sec->used_by_bfd = sdata;
}
ret = _bfd_elf_new_section_hook (abfd, sec);
sec->use_rela_p = elf32_tic6x_tdata (abfd)->use_rela_p;
return ret;
}
/* Return true if relocation REL against section SEC is a REL rather
than RELA relocation. RELOCS is the first relocation in the
section and ABFD is the bfd that contains SEC. */
static bool
elf32_tic6x_rel_relocation_p (bfd *abfd, asection *sec,
const Elf_Internal_Rela *relocs,
const Elf_Internal_Rela *rel)
{
Elf_Internal_Shdr *rel_hdr;
const struct elf_backend_data *bed;
/* To determine which flavor of relocation this is, we depend on the
fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
rel_hdr = elf_section_data (sec)->rel.hdr;
if (rel_hdr == NULL)
return false;
bed = get_elf_backend_data (abfd);
return ((size_t) (rel - relocs)
< NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel);
}
/* We need dynamic symbols for every section, since segments can
relocate independently. */
static bool
elf32_tic6x_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
asection *p)
{
switch (elf_section_data (p)->this_hdr.sh_type)
{
case SHT_PROGBITS:
case SHT_NOBITS:
/* If sh_type is yet undecided, assume it could be
SHT_PROGBITS/SHT_NOBITS. */
case SHT_NULL:
return false;
/* There shouldn't be section relative relocations
against any other section. */
default:
return true;
}
}
static int
elf32_tic6x_relocate_section (bfd *output_bfd,
struct bfd_link_info *info,
bfd *input_bfd,
asection *input_section,
bfd_byte *contents,
Elf_Internal_Rela *relocs,
Elf_Internal_Sym *local_syms,
asection **local_sections)
{
struct elf32_tic6x_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_vma *local_got_offsets;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
bool ok = true;
htab = elf32_tic6x_hash_table (info);
symtab_hdr = & elf_symtab_hdr (input_bfd);
sym_hashes = elf_sym_hashes (input_bfd);
local_got_offsets = elf_local_got_offsets (input_bfd);
relend = relocs + input_section->reloc_count;
for (rel = relocs; rel < relend; rel ++)
{
int r_type;
unsigned long r_symndx;
arelent bfd_reloc;
reloc_howto_type *howto;
Elf_Internal_Sym *sym;
asection *sec;
struct elf_link_hash_entry *h;
bfd_vma off, off2, relocation;
bool unresolved_reloc;
bfd_reloc_status_type r;
struct bfd_link_hash_entry *sbh;
bool is_rel;
bool res;
r_type = ELF32_R_TYPE (rel->r_info);
r_symndx = ELF32_R_SYM (rel->r_info);
is_rel = elf32_tic6x_rel_relocation_p (input_bfd, input_section,
relocs, rel);
if (is_rel)
res = elf32_tic6x_info_to_howto_rel (input_bfd, &bfd_reloc, rel);
else
res = elf32_tic6x_info_to_howto (input_bfd, &bfd_reloc, rel);
if (!res || (howto = bfd_reloc.howto) == NULL)
{
bfd_set_error (bfd_error_bad_value);
return false;
}
h = NULL;
sym = NULL;
sec = NULL;
unresolved_reloc = false;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
bool warned, ignored;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned, ignored);
}
if (sec != NULL && discarded_section (sec))
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
rel, 1, relend, howto, 0, contents);
if (bfd_link_relocatable (info))
{
if (is_rel
&& sym != NULL
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
rel->r_addend = 0;
relocation = sec->output_offset + sym->st_value;
r = _bfd_relocate_contents (howto, input_bfd, relocation,
contents + rel->r_offset);
goto done_reloc;
}
continue;
}
switch (r_type)
{
case R_C6000_NONE:
case R_C6000_ALIGN:
case R_C6000_FPHEAD:
case R_C6000_NOCMP:
/* No action needed. */
continue;
case R_C6000_PCR_S21:
/* A branch to an undefined weak symbol is turned into a
"b .s2 B3" instruction if the existing insn is of the
form "b .s2 symbol". */
if (h ? h->root.type == bfd_link_hash_undefweak
&& (htab->elf.splt == NULL || h->plt.offset == (bfd_vma) -1)
: r_symndx != STN_UNDEF && bfd_is_und_section (sec))
{
unsigned long oldval;
oldval = bfd_get_32 (input_bfd, contents + rel->r_offset);
if ((oldval & 0x7e) == 0x12)
{
oldval &= 0xF0000001;
bfd_put_32 (input_bfd, oldval | 0x000c0362,
contents + rel->r_offset);
r = bfd_reloc_ok;
goto done_reloc;
}
}
/* Fall through. */
case R_C6000_PCR_S12:
case R_C6000_PCR_S10:
case R_C6000_PCR_S7:
if (h != NULL
&& h->plt.offset != (bfd_vma) -1
&& htab->elf.splt != NULL)
{
relocation = (htab->elf.splt->output_section->vma
+ htab->elf.splt->output_offset
+ h->plt.offset);
}
/* Generic PC-relative handling produces a value relative to
the exact location of the relocation. Adjust it to be
relative to the start of the fetch packet instead. */
relocation += (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset) & 0x1f;
unresolved_reloc = false;
break;
case R_C6000_PCR_H16:
case R_C6000_PCR_L16:
off = (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset);
/* These must be calculated as R = S - FP(FP(PC) - A).
PC, here, is the value we just computed in OFF. RELOCATION
has the address of S + A. */
relocation -= rel->r_addend;
off2 = ((off & ~(bfd_vma)0x1f) - rel->r_addend) & (bfd_vma)~0x1f;
off2 = relocation - off2;
relocation = off + off2;
break;
case R_C6000_DSBT_INDEX:
relocation = elf32_tic6x_hash_table (info)->params.dsbt_index;
if (!bfd_link_pic (info) || relocation != 0)
break;
/* fall through */
case R_C6000_ABS32:
case R_C6000_ABS16:
case R_C6000_ABS8:
case R_C6000_ABS_S16:
case R_C6000_ABS_L16:
case R_C6000_ABS_H16:
/* When generating a shared object or relocatable executable, these
relocations are copied into the output file to be resolved at
run time. */
if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (output_bfd))
&& (input_section->flags & SEC_ALLOC)
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak))
{
Elf_Internal_Rela outrel;
bool skip, relocate;
asection *sreloc;
unresolved_reloc = false;
sreloc = elf_section_data (input_section)->sreloc;
BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
skip = false;
relocate = false;
outrel.r_offset =
_bfd_elf_section_offset (output_bfd, info, input_section,
rel->r_offset);
if (outrel.r_offset == (bfd_vma) -1)
skip = true;
else if (outrel.r_offset == (bfd_vma) -2)
skip = true, relocate = true;
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
if (skip)
memset (&outrel, 0, sizeof outrel);
else if (h != NULL
&& h->dynindx != -1
&& (!bfd_link_pic (info)
|| !SYMBOLIC_BIND (info, h)
|| !h->def_regular))
{
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
outrel.r_addend = rel->r_addend;
}
else
{
long indx;
outrel.r_addend = relocation + rel->r_addend;
if (bfd_is_abs_section (sec))
indx = 0;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
return false;
}
else
{
asection *osec;
osec = sec->output_section;
indx = elf_section_data (osec)->dynindx;
outrel.r_addend -= osec->vma;
BFD_ASSERT (indx != 0);
}
outrel.r_info = ELF32_R_INFO (indx, r_type);
}
elf32_tic6x_install_rela (output_bfd, sreloc, &outrel);
/* If this reloc is against an external symbol, we do not want to
fiddle with the addend. Otherwise, we need to include the symbol
value so that it becomes an addend for the dynamic reloc. */
if (! relocate)
continue;
}
/* Generic logic OK. */
break;
case R_C6000_SBR_U15_B:
case R_C6000_SBR_U15_H:
case R_C6000_SBR_U15_W:
case R_C6000_SBR_S16:
case R_C6000_SBR_L16_B:
case R_C6000_SBR_L16_H:
case R_C6000_SBR_L16_W:
case R_C6000_SBR_H16_B:
case R_C6000_SBR_H16_H:
case R_C6000_SBR_H16_W:
sbh = bfd_link_hash_lookup (info->hash, "__c6xabi_DSBT_BASE",
false, false, true);
if (sbh != NULL
&& (sbh->type == bfd_link_hash_defined
|| sbh->type == bfd_link_hash_defweak))
{
if (h ? (h->root.type == bfd_link_hash_undefweak
&& (htab->elf.splt == NULL
|| h->plt.offset == (bfd_vma) -1))
: r_symndx != STN_UNDEF && bfd_is_und_section (sec))
relocation = 0;
else
relocation -= (sbh->u.def.value
+ sbh->u.def.section->output_section->vma
+ sbh->u.def.section->output_offset);
}
else
{
_bfd_error_handler (_("%pB: SB-relative relocation but "
"__c6xabi_DSBT_BASE not defined"),
input_bfd);
ok = false;
continue;
}
break;
case R_C6000_SBR_GOT_U15_W:
case R_C6000_SBR_GOT_L16_W:
case R_C6000_SBR_GOT_H16_W:
case R_C6000_EHTYPE:
/* Relocation is to the entry for this symbol in the global
offset table. */
if (htab->elf.sgot == NULL)
abort ();
if (h != NULL)
{
bool dyn;
off = h->got.offset;
dyn = htab->elf.dynamic_sections_created;
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
bfd_link_pic (info),
h)
|| (bfd_link_pic (info)
&& SYMBOL_REFERENCES_LOCAL (info, h))
|| (ELF_ST_VISIBILITY (h->other)
&& h->root.type == bfd_link_hash_undefweak))
{
/* This is actually a static link, or it is a
-Bsymbolic link and the symbol is defined
locally, or the symbol was forced to be local
because of a version file. We must initialize
this entry in the global offset table. Since the
offset must always be a multiple of 4, we use the
least significant bit to record whether we have
initialized it already.
When doing a dynamic link, we create a .rel.got
relocation entry to initialize the value. This
is done in the finish_dynamic_symbol routine. */
if ((off & 1) != 0)
off &= ~1;
else
{
bfd_put_32 (output_bfd, relocation,
htab->elf.sgot->contents + off);
h->got.offset |= 1;
if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
bfd_link_pic (info),
h)
&& !(ELF_ST_VISIBILITY (h->other)
&& h->root.type == bfd_link_hash_undefweak))
elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec,
off);
}
}
else
unresolved_reloc = false;
}
else
{
if (local_got_offsets == NULL)
abort ();
off = local_got_offsets[r_symndx];
/* The offset must always be a multiple of 4. We use
the least significant bit to record whether we have
already generated the necessary reloc. */
if ((off & 1) != 0)
off &= ~1;
else
{
bfd_put_32 (output_bfd, relocation,
htab->elf.sgot->contents + off);
if (bfd_link_pic (info) || elf32_tic6x_using_dsbt (output_bfd))
elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec, off);
local_got_offsets[r_symndx] |= 1;
}
}
if (off >= (bfd_vma) -2)
abort ();
if (htab->dsbt)
relocation = (htab->elf.sgot->output_section->vma
+ htab->elf.sgot->output_offset + off
- htab->dsbt->output_section->vma
- htab->dsbt->output_offset);
else
relocation = (htab->elf.sgot->output_section->vma
+ htab->elf.sgot->output_offset + off
- htab->elf.sgotplt->output_section->vma
- htab->elf.sgotplt->output_offset);
if (rel->r_addend != 0)
{
/* We can't do anything for a relocation which is against
a symbol *plus offset*. GOT holds relocations for
symbols. Make this an error; the compiler isn't
allowed to pass us these kinds of things. */
if (h == NULL)
_bfd_error_handler
/* xgettext:c-format */
(_("%pB, section %pA: relocation %s with non-zero addend %"
PRId64 " against local symbol"),
input_bfd,
input_section,
elf32_tic6x_howto_table[r_type].name,
(int64_t) rel->r_addend);
else
_bfd_error_handler
/* xgettext:c-format */
(_("%pB, section %pA: relocation %s with non-zero addend %"
PRId64 " against symbol `%s'"),
input_bfd,
input_section,
elf32_tic6x_howto_table[r_type].name,
(int64_t) rel->r_addend,
h->root.root.string[0] != '\0' ? h->root.root.string
: _("[whose name is lost]"));
bfd_set_error (bfd_error_bad_value);
return false;
}
break;
case R_C6000_PREL31:
if (h != NULL
&& h->plt.offset != (bfd_vma) -1
&& htab->elf.splt != NULL)
{
relocation = (htab->elf.splt->output_section->vma
+ htab->elf.splt->output_offset
+ h->plt.offset);
}
break;
case R_C6000_COPY:
/* Invalid in relocatable object. */
default:
/* Unknown relocation. */
/* xgettext:c-format */
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
input_bfd, r_type);
bfd_set_error (bfd_error_bad_value);
ok = false;
continue;
}
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
done_reloc:
if (r == bfd_reloc_ok
&& howto->complain_on_overflow == complain_overflow_bitfield)
{
/* Generic overflow handling accepts cases the ABI says
should be rejected for R_C6000_ABS16 and
R_C6000_ABS8. */
bfd_vma value = (relocation + rel->r_addend) & 0xffffffff;
bfd_vma sbit = 1 << (howto->bitsize - 1);
bfd_vma sbits = (-(bfd_vma) sbit) & 0xffffffff;
bfd_vma value_sbits = value & sbits;
if (value_sbits != 0
&& value_sbits != sbit
&& value_sbits != sbits)
r = bfd_reloc_overflow;
}
if (r != bfd_reloc_ok)
{
const char *name;
const char *error_message;
if (h != NULL)
name = h->root.root.string;
else
{
name = bfd_elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
sym->st_name);
if (name == NULL)
return false;
if (*name == '\0')
name = bfd_section_name (sec);
}
switch (r)
{
case bfd_reloc_overflow:
/* If the overflowing reloc was to an undefined symbol,
we have already printed one error message and there
is no point complaining again. */
if (!h || h->root.type != bfd_link_hash_undefined)
(*info->callbacks->reloc_overflow)
(info, (h ? &h->root : NULL), name, howto->name,
(bfd_vma) 0, input_bfd, input_section, rel->r_offset);
break;
case bfd_reloc_undefined:
(*info->callbacks->undefined_symbol) (info, name, input_bfd,
input_section,
rel->r_offset, true);
break;
case bfd_reloc_outofrange:
error_message = _("out of range");
goto common_error;
case bfd_reloc_notsupported:
error_message = _("unsupported relocation");
goto common_error;
case bfd_reloc_dangerous:
error_message = _("dangerous relocation");
goto common_error;
default:
error_message = _("unknown error");
/* Fall through. */
common_error:
BFD_ASSERT (error_message != NULL);
(*info->callbacks->reloc_dangerous)
(info, error_message, input_bfd, input_section, rel->r_offset);
break;
}
}
}
return ok;
}
/* Look through the relocs for a section during the first phase, and
calculate needed space in the global offset table, procedure linkage
table, and dynamic reloc sections. */
static bool
elf32_tic6x_check_relocs (bfd *abfd, struct bfd_link_info *info,
asection *sec, const Elf_Internal_Rela *relocs)
{
struct elf32_tic6x_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
if (bfd_link_relocatable (info))
return true;
htab = elf32_tic6x_hash_table (info);
symtab_hdr = &elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
/* Create dynamic sections for relocatable executables so that we can
copy relocations. */
if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (abfd))
&& ! htab->elf.dynamic_sections_created)
{
if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
return false;
}
sreloc = NULL;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
unsigned int r_type;
unsigned int r_symndx;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *isym;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
{
/* xgettext:c-format */
_bfd_error_handler (_("%pB: bad symbol index: %d"),
abfd, r_symndx);
return false;
}
if (r_symndx < symtab_hdr->sh_info)
{
/* A local symbol. */
isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache,
abfd, r_symndx);
if (isym == NULL)
return false;
h = NULL;
}
else
{
isym = NULL;
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
switch (r_type)
{
case R_C6000_PCR_S21:
case R_C6000_PREL31:
/* This symbol requires a procedure linkage table entry. We
actually build the entry in adjust_dynamic_symbol,
because this might be a case of linking PIC code which is
never referenced by a dynamic object, in which case we
don't need to generate a procedure linkage table entry
after all. */
/* If this is a local symbol, we resolve it directly without
creating a procedure linkage table entry. */
if (h == NULL)
continue;
h->needs_plt = 1;
h->plt.refcount += 1;
break;
case R_C6000_SBR_GOT_U15_W:
case R_C6000_SBR_GOT_L16_W:
case R_C6000_SBR_GOT_H16_W:
case R_C6000_EHTYPE:
/* This symbol requires a global offset table entry. */
if (h != NULL)
{
h->got.refcount += 1;
}
else
{
bfd_signed_vma *local_got_refcounts;
/* This is a global offset table entry for a local symbol. */
local_got_refcounts = elf_local_got_refcounts (abfd);
if (local_got_refcounts == NULL)
{
bfd_size_type size;
size = symtab_hdr->sh_info;
size *= (sizeof (bfd_signed_vma)
+ sizeof (bfd_vma) + sizeof(char));
local_got_refcounts = bfd_zalloc (abfd, size);
if (local_got_refcounts == NULL)
return false;
elf_local_got_refcounts (abfd) = local_got_refcounts;
}
local_got_refcounts[r_symndx] += 1;
}
if (htab->elf.sgot == NULL)
{
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
return false;
}
break;
case R_C6000_DSBT_INDEX:
/* We'd like to check for nonzero dsbt_index here, but it's
set up only after check_relocs is called. Instead, we
store the number of R_C6000_DSBT_INDEX relocs in the
pc_count field, and potentially discard the extra space
in elf32_tic6x_allocate_dynrelocs. */
if (!bfd_link_pic (info))
break;
/* fall through */
case R_C6000_ABS32:
case R_C6000_ABS16:
case R_C6000_ABS8:
case R_C6000_ABS_S16:
case R_C6000_ABS_L16:
case R_C6000_ABS_H16:
/* If we are creating a shared library, and this is a reloc
against a global symbol, or a non PC relative reloc
against a local symbol, then we need to copy the reloc
into the shared library. However, if we are linking with
-Bsymbolic, we do not need to copy a reloc against a
global symbol which is defined in an object we are
including in the link (i.e., DEF_REGULAR is set). At
this point we have not seen all the input files, so it is
possible that DEF_REGULAR is not set now but will be set
later (it is never cleared). In case of a weak definition,
DEF_REGULAR may be cleared later by a strong definition in
a shared library. We account for that possibility below by
storing information in the relocs_copied field of the hash
table entry. A similar situation occurs when creating
shared libraries and symbol visibility changes render the
symbol local.
If on the other hand, we are creating an executable, we
may need to keep relocations for symbols satisfied by a
dynamic library if we manage to avoid copy relocs for the
symbol. */
if ((bfd_link_pic (info) || elf32_tic6x_using_dsbt (abfd))
&& (sec->flags & SEC_ALLOC) != 0)
{
struct elf_dyn_relocs *p;
struct elf_dyn_relocs **head;
/* We must copy these reloc types into the output file.
Create a reloc section in dynobj and make room for
this reloc. */
if (sreloc == NULL)
{
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
sreloc = _bfd_elf_make_dynamic_reloc_section
(sec, htab->elf.dynobj, 2, abfd, /*rela? */ true);
if (sreloc == NULL)
return false;
}
/* If this is a global symbol, we count the number of
relocations we need for this symbol. */
if (h != NULL)
{
head = &h->dyn_relocs;
}
else
{
/* Track dynamic relocs needed for local syms too.
We really need local syms available to do this
easily. Oh well. */
void **vpp;
asection *s;
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
if (s == NULL)
s = sec;
vpp = &elf_section_data (s)->local_dynrel;
head = (struct elf_dyn_relocs **)vpp;
}
p = *head;
if (p == NULL || p->sec != sec)
{
size_t amt = sizeof *p;
p = bfd_alloc (htab->elf.dynobj, amt);
if (p == NULL)
return false;
p->next = *head;
*head = p;
p->sec = sec;
p->count = 0;
p->pc_count = 0;
}
p->count += 1;
if (r_type == R_C6000_DSBT_INDEX)
p->pc_count += 1;
}
break;
case R_C6000_SBR_U15_B:
case R_C6000_SBR_U15_H:
case R_C6000_SBR_U15_W:
case R_C6000_SBR_S16:
case R_C6000_SBR_L16_B:
case R_C6000_SBR_L16_H:
case R_C6000_SBR_L16_W:
case R_C6000_SBR_H16_B:
case R_C6000_SBR_H16_H:
case R_C6000_SBR_H16_W:
{
/* These relocations implicitly reference __c6xabi_DSBT_BASE.
Add an explicit reference so that the symbol will be
provided by a linker script. */
struct bfd_link_hash_entry *bh = NULL;
if (!_bfd_generic_link_add_one_symbol (info, abfd,
"__c6xabi_DSBT_BASE",
BSF_GLOBAL,
bfd_und_section_ptr, 0,
NULL, false, false, &bh))
return false;
((struct elf_link_hash_entry *) bh)->non_elf = 0;
}
if (h != NULL && bfd_link_executable (info))
{
/* For B14-relative addresses, we might need a copy
reloc. */
h->non_got_ref = 1;
}
break;
default:
break;
}
}
return true;
}
static bool
elf32_tic6x_add_symbol_hook (bfd *abfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
Elf_Internal_Sym *sym,
const char **namep ATTRIBUTE_UNUSED,
flagword *flagsp ATTRIBUTE_UNUSED,
asection **secp,
bfd_vma *valp)
{
switch (sym->st_shndx)
{
case SHN_TIC6X_SCOMMON:
*secp = bfd_make_section_old_way (abfd, ".scommon");
(*secp)->flags |= SEC_IS_COMMON | SEC_SMALL_DATA;
*valp = sym->st_size;
bfd_set_section_alignment (*secp, bfd_log2 (sym->st_value));
break;
}
return true;
}
static void
elf32_tic6x_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
{
elf_symbol_type *elfsym;
elfsym = (elf_symbol_type *) asym;
switch (elfsym->internal_elf_sym.st_shndx)
{
case SHN_TIC6X_SCOMMON:
asym->section = &tic6x_elf_scom_section;
asym->value = elfsym->internal_elf_sym.st_size;
break;
}
}
static int
elf32_tic6x_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
const char *name ATTRIBUTE_UNUSED,
Elf_Internal_Sym *sym,
asection *input_sec,
struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
{
/* If we see a common symbol, which implies a relocatable link, then
if a symbol was small common in an input file, mark it as small
common in the output file. */
if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0)
sym->st_shndx = SHN_TIC6X_SCOMMON;
return 1;
}
static bool
elf32_tic6x_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
asection *sec,
int *retval)
{
if (strcmp (bfd_section_name (sec), ".scommon") == 0)
{
*retval = SHN_TIC6X_SCOMMON;
return true;
}
return false;
}
/* Allocate space in .plt, .got and associated reloc sections for
dynamic relocs. */
static bool
elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
{
struct bfd_link_info *info;
struct elf32_tic6x_link_hash_table *htab;
struct elf_dyn_relocs *p;
if (h->root.type == bfd_link_hash_indirect)
return true;
info = (struct bfd_link_info *) inf;
htab = elf32_tic6x_hash_table (info);
if (htab->elf.dynamic_sections_created && h->plt.refcount > 0)
{
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1 && !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return false;
}
if (bfd_link_pic (info)
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->elf.splt;
/* If this is the first .plt entry, make room for the special
first entry. */
if (s->size == 0)
s->size += PLT_ENTRY_SIZE;
h->plt.offset = s->size;
/* If this symbol is not defined in a regular file, and we are
not generating a shared library, then set the symbol to this
location in the .plt. This is required to make function
pointers compare as equal between the normal executable and
the shared library. */
if (! bfd_link_pic (info) && !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = h->plt.offset;
}
/* Make room for this entry. */
s->size += PLT_ENTRY_SIZE;
/* We also need to make an entry in the .got.plt section, which
will be placed in the .got section by the linker script. */
htab->elf.sgotplt->size += 4;
/* We also need to make an entry in the .rel.plt section. */
htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
}
else
{
h->plt.offset = (bfd_vma) -1;
h->needs_plt = 0;
}
}
else
{
h->plt.offset = (bfd_vma) -1;
h->needs_plt = 0;
}
if (h->got.refcount > 0)
{
asection *s;
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
&& !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return false;
}
s = htab->elf.sgot;
h->got.offset = s->size;
s->size += 4;
if (!(ELF_ST_VISIBILITY (h->other)
&& h->root.type == bfd_link_hash_undefweak))
htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
}
else
h->got.offset = (bfd_vma) -1;
if (h->dyn_relocs == NULL)
return true;
/* Discard relocs on undefined weak syms with non-default
visibility. */
if (bfd_link_pic (info) || elf32_tic6x_using_dsbt (htab->obfd))
{
/* We use the pc_count field to hold the number of
R_C6000_DSBT_INDEX relocs. */
if (htab->params.dsbt_index != 0)
{
struct elf_dyn_relocs **pp;
for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
{
p->count -= p->pc_count;
p->pc_count = 0;
if (p->count == 0)
*pp = p->next;
else
pp = &p->next;
}
}
if (h->dyn_relocs != NULL
&& h->root.type == bfd_link_hash_undefweak)
{
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
h->dyn_relocs = NULL;
/* Make sure undefined weak symbols are output as a dynamic
symbol in PIEs. */
else if (h->dynindx == -1
&& !h->forced_local)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return false;
}
}
}
/* Finally, allocate space. */
for (p = h->dyn_relocs; p != NULL; p = p->next)
{
asection *sreloc;
sreloc = elf_section_data (p->sec)->sreloc;
BFD_ASSERT (sreloc != NULL);
sreloc->size += p->count * sizeof (Elf32_External_Rela);
}
return true;
}
/* Set the sizes of the dynamic sections. */
static bool
elf32_tic6x_late_size_sections (bfd *output_bfd, struct bfd_link_info *info)
{
struct elf32_tic6x_link_hash_table *htab;
bfd *dynobj;
asection *s;
bool relocs;
bfd *ibfd;