f8df10f4f5
* elflink.h (elf_link_input_bfd): Don't consider empty merged sections as removed in relocation tests. * elf-bfd.h (_bfd_elf_rela_local_sym): Add prototype. * elf32-i386.c (elf_i386_relocate_section): Handle relocs against STT_SECTION symbol of SHF_MERGE section. * elf32-arm.h (elf32_arm_relocate_section): Likewise. * elf32-avr.c (elf32_avr_relocate_section): Call _bfd_elf_rela_local_sym. * elf32-cris.c (cris_elf_relocate_section): Likewise. * elf32-d10v.c (elf32_d10v_relocate_section): Likewise. * elf32-fr30.c (fr30_final_link_relocate): Likewise. * elf32-h8300.c (elf32_h8_relocate_section): Likewise. * elf32-hppa.c (elf32_hppa_relocate_section): Likewise. * elf32-i370.c (i370_elf_relocate_section): Likewise. * elf32-i860.c (elf32_i860_relocate_section): Likewise. * elf32-m32r.c (m32r_elf_relocate_section): Likewise. * elf32-m68k.c (elf_m68k_relocate_section): Likewise. * elf32-mcore.c (mcore_elf_relocate_section): Likewise. * elf32-openrisc.c (openrisc_elf_relocate_section): Likewise. * elf32-ppc.c (ppc_elf_relocate_section): Likewise. * elf32-s390.c (elf_s390_relocate_section): Likewise. * elf32-sparc.c (elf32_sparc_relocate_section): Likewise. * elf32-v850.c (v850_elf_relocate_section): Likewise. * elf64-alpha.c (elf64_alpha_relocate_section): Likewise. * elf64-mmix.c (mmix_elf_relocate_section): Likewise. * elf64-ppc.c (ppc64_elf_relocate_section): Likewise. * elf64-s390.c (elf_s390_relocate_section): Likewise. * elf64-sparc.c (sparc64_elf_relocate_section): Likewise. * elf64-x86-64.c (elf64_x86_64_relocate_section): Likewise. * elf-hppa.h (elf_hppa_relocate_section): Likewise. * elf-m10200.c (mn10200_elf_relocate_section): Likewise. * elf-m10300.c (mn10300_elf_relocate_section): Likewise. * elfxx-ia64.c (elfNN_ia64_relocate_section): Likewise. * elf32-sh.c (sh_elf_relocate_section): Likewise for !partial_inplace relocs. Handle relocs against STT_SECTION symbol of SHF_MERGE for partial_inplace relocs. * config/tc-alpha.c (tc_gen_reloc): Remove SEC_MERGE test. * write.c (adjust_reloc_syms): Don't handle relocs against SEC_MERGE section symbols specially. (fixup_segment): Likewise.
1738 lines
52 KiB
C
1738 lines
52 KiB
C
/* MMIX-specific support for 64-bit ELF.
|
||
Copyright (C) 2001 Free Software Foundation, Inc.
|
||
Contributed by Hans-Peter Nilsson <hp@bitrange.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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
/* No specific ABI or "processor-specific supplement" defined. */
|
||
|
||
/* TODO:
|
||
- Linker relaxation.
|
||
- On-demand register allocation (from R_MMIX_BASE_PLUS_OFFSET). */
|
||
|
||
#include "bfd.h"
|
||
#include "sysdep.h"
|
||
#include "libbfd.h"
|
||
#include "elf-bfd.h"
|
||
#include "elf/mmix.h"
|
||
#include "opcode/mmix.h"
|
||
|
||
#define MINUS_ONE (((bfd_vma) 0) - 1)
|
||
|
||
/* Put these everywhere in new code. */
|
||
#define FATAL_DEBUG \
|
||
_bfd_abort (__FILE__, __LINE__, \
|
||
"Internal: Non-debugged code (test-case missing)")
|
||
|
||
#define BAD_CASE(x) \
|
||
_bfd_abort (__FILE__, __LINE__, \
|
||
"bad case for " #x)
|
||
|
||
static boolean mmix_elf_link_output_symbol_hook
|
||
PARAMS ((bfd *, struct bfd_link_info *, const char *,
|
||
Elf_Internal_Sym *, asection *));
|
||
|
||
static bfd_reloc_status_type mmix_elf_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static reloc_howto_type *bfd_elf64_bfd_reloc_type_lookup
|
||
PARAMS ((bfd *, bfd_reloc_code_real_type));
|
||
|
||
static void mmix_info_to_howto_rela
|
||
PARAMS ((bfd *, arelent *, Elf64_Internal_Rela *));
|
||
|
||
static int mmix_elf_sort_relocs PARAMS ((const PTR, const PTR));
|
||
|
||
static boolean mmix_elf_check_relocs
|
||
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
||
const Elf_Internal_Rela *));
|
||
|
||
static boolean mmix_elf_relocate_section
|
||
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
||
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
|
||
|
||
static asection * mmix_elf_gc_mark_hook
|
||
PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
|
||
struct elf_link_hash_entry *, Elf_Internal_Sym *));
|
||
|
||
static bfd_reloc_status_type mmix_final_link_relocate
|
||
PARAMS ((reloc_howto_type *, asection *, bfd_byte *,
|
||
bfd_vma, bfd_signed_vma, bfd_vma, const char *, asection *));
|
||
|
||
static bfd_reloc_status_type mmix_elf_perform_relocation
|
||
PARAMS ((asection *, reloc_howto_type *, PTR, bfd_vma, bfd_vma));
|
||
|
||
static boolean mmix_elf_section_from_bfd_section
|
||
PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *, int *));
|
||
|
||
static boolean mmix_elf_add_symbol_hook
|
||
PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
|
||
const char **, flagword *, asection **, bfd_vma *));
|
||
|
||
static boolean mmix_elf_is_local_label_name
|
||
PARAMS ((bfd *, const char *));
|
||
|
||
extern boolean mmix_elf_final_link PARAMS ((bfd *, struct bfd_link_info *));
|
||
|
||
extern void mmix_elf_symbol_processing PARAMS ((bfd *, asymbol *));
|
||
|
||
/* Watch out: this currently needs to have elements with the same index as
|
||
their R_MMIX_ number. */
|
||
static reloc_howto_type elf_mmix_howto_table[] =
|
||
{
|
||
/* This reloc does nothing. */
|
||
HOWTO (R_MMIX_NONE, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_NONE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* An 8 bit absolute relocation. */
|
||
HOWTO (R_MMIX_8, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_8", /* name */
|
||
false, /* partial_inplace */
|
||
0xff, /* src_mask */
|
||
0xff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* An 16 bit absolute relocation. */
|
||
HOWTO (R_MMIX_16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_16", /* name */
|
||
false, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* An 24 bit absolute relocation. */
|
||
HOWTO (R_MMIX_24, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
24, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_24", /* name */
|
||
false, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 32 bit absolute relocation. */
|
||
HOWTO (R_MMIX_32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_32", /* name */
|
||
false, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 64 bit relocation. */
|
||
HOWTO (R_MMIX_64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_64", /* name */
|
||
false, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* An 8 bit PC-relative relocation. */
|
||
HOWTO (R_MMIX_PC_8, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_PC_8", /* name */
|
||
false, /* partial_inplace */
|
||
0xff, /* src_mask */
|
||
0xff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* An 16 bit PC-relative relocation. */
|
||
HOWTO (R_MMIX_PC_16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_PC_16", /* name */
|
||
false, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* An 24 bit PC-relative relocation. */
|
||
HOWTO (R_MMIX_PC_24, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
24, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_PC_24", /* name */
|
||
false, /* partial_inplace */
|
||
0xffffff, /* src_mask */
|
||
0xffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* A 32 bit absolute PC-relative relocation. */
|
||
HOWTO (R_MMIX_PC_32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_PC_32", /* name */
|
||
false, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* 64 bit PC-relative relocation. */
|
||
HOWTO (R_MMIX_PC_64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MMIX_PC_64", /* name */
|
||
false, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable hierarchy. */
|
||
HOWTO (R_MMIX_GNU_VTINHERIT, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"R_MMIX_GNU_VTINHERIT", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable member usage. */
|
||
HOWTO (R_MMIX_GNU_VTENTRY, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
||
"R_MMIX_GNU_VTENTRY", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* The GETA relocation is supposed to get any address that could
|
||
possibly be reached by the GETA instruction. It can silently expand
|
||
to get a 64-bit operand, but will complain if any of the two least
|
||
significant bits are set. The howto members reflect a simple GETA. */
|
||
HOWTO (R_MMIX_GETA, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_GETA", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_GETA_1, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_GETA_1", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_GETA_2, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_GETA_2", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_GETA_3, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_GETA_3", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* The conditional branches are supposed to reach any (code) address.
|
||
It can silently expand to a 64-bit operand, but will emit an error if
|
||
any of the two least significant bits are set. The howto members
|
||
reflect a simple branch. */
|
||
HOWTO (R_MMIX_CBRANCH, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_CBRANCH", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_CBRANCH_J, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_CBRANCH_J", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_CBRANCH_1, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_CBRANCH_1", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_CBRANCH_2, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_CBRANCH_2", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_CBRANCH_3, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_CBRANCH_3", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* The PUSHJ instruction can reach any (code) address, as long as it's
|
||
the beginning of a function (no usable restriction). It can silently
|
||
expand to a 64-bit operand, but will emit an error if any of the two
|
||
least significant bits are set. The howto members reflect a simple
|
||
PUSHJ. */
|
||
HOWTO (R_MMIX_PUSHJ, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_PUSHJ", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_PUSHJ_1, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_PUSHJ_1", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_PUSHJ_2, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_PUSHJ_2", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_PUSHJ_3, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_PUSHJ_3", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* A JMP is supposed to reach any (code) address. By itself, it can
|
||
reach +-64M; the expansion can reach all 64 bits. Note that the 64M
|
||
limit is soon reached if you link the program in wildly different
|
||
memory segments. The howto members reflect a trivial JMP. */
|
||
HOWTO (R_MMIX_JMP, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
27, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_JMP", /* name */
|
||
false, /* partial_inplace */
|
||
0x1ffffff, /* src_mask */
|
||
0x1ffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_JMP_1, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
27, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_JMP_1", /* name */
|
||
false, /* partial_inplace */
|
||
0x1ffffff, /* src_mask */
|
||
0x1ffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_JMP_2, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
27, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_JMP_2", /* name */
|
||
false, /* partial_inplace */
|
||
0x1ffffff, /* src_mask */
|
||
0x1ffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (R_MMIX_JMP_3, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
27, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_JMP_3", /* name */
|
||
false, /* partial_inplace */
|
||
0x1ffffff, /* src_mask */
|
||
0x1ffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* When we don't emit link-time-relaxable code from the assembler, or
|
||
when relaxation has done all it can do, these relocs are used. For
|
||
GETA/PUSHJ/branches. */
|
||
HOWTO (R_MMIX_ADDR19, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
19, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_ADDR19", /* name */
|
||
false, /* partial_inplace */
|
||
0x0100ffff, /* src_mask */
|
||
0x0100ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* For JMP. */
|
||
HOWTO (R_MMIX_ADDR27, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
27, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_ADDR27", /* name */
|
||
false, /* partial_inplace */
|
||
0x1ffffff, /* src_mask */
|
||
0x1ffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* A general register or the value 0..255. If a value, then the
|
||
instruction (offset -3) needs adjusting. */
|
||
HOWTO (R_MMIX_REG_OR_BYTE, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_REG_OR_BYTE", /* name */
|
||
false, /* partial_inplace */
|
||
0xff, /* src_mask */
|
||
0xff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A general register. */
|
||
HOWTO (R_MMIX_REG, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_REG", /* name */
|
||
false, /* partial_inplace */
|
||
0xff, /* src_mask */
|
||
0xff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A register plus an index, corresponding to the relocation expression.
|
||
The sizes must correspond to the valid range of the expression, while
|
||
the bitmasks correspond to what we store in the image. */
|
||
HOWTO (R_MMIX_BASE_PLUS_OFFSET, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_BASE_PLUS_OFFSET", /* name */
|
||
false, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A "magic" relocation for a LOCAL expression, asserting that the
|
||
expression is less than the number of global registers. No actual
|
||
modification of the contents is done. Implementing this as a
|
||
relocation was less intrusive than e.g. putting such expressions in a
|
||
section to discard *after* relocation. */
|
||
HOWTO (R_MMIX_LOCAL, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mmix_elf_reloc, /* special_function */
|
||
"R_MMIX_LOCAL", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
};
|
||
|
||
|
||
/* Map BFD reloc types to MMIX ELF reloc types. */
|
||
|
||
struct mmix_reloc_map
|
||
{
|
||
bfd_reloc_code_real_type bfd_reloc_val;
|
||
enum elf_mmix_reloc_type elf_reloc_val;
|
||
};
|
||
|
||
|
||
static const struct mmix_reloc_map mmix_reloc_map[] =
|
||
{
|
||
{BFD_RELOC_NONE, R_MMIX_NONE},
|
||
{BFD_RELOC_8, R_MMIX_8},
|
||
{BFD_RELOC_16, R_MMIX_16},
|
||
{BFD_RELOC_24, R_MMIX_24},
|
||
{BFD_RELOC_32, R_MMIX_32},
|
||
{BFD_RELOC_64, R_MMIX_64},
|
||
{BFD_RELOC_8_PCREL, R_MMIX_PC_8},
|
||
{BFD_RELOC_16_PCREL, R_MMIX_PC_16},
|
||
{BFD_RELOC_24_PCREL, R_MMIX_PC_24},
|
||
{BFD_RELOC_32_PCREL, R_MMIX_PC_32},
|
||
{BFD_RELOC_64_PCREL, R_MMIX_PC_64},
|
||
{BFD_RELOC_VTABLE_INHERIT, R_MMIX_GNU_VTINHERIT},
|
||
{BFD_RELOC_VTABLE_ENTRY, R_MMIX_GNU_VTENTRY},
|
||
{BFD_RELOC_MMIX_GETA, R_MMIX_GETA},
|
||
{BFD_RELOC_MMIX_CBRANCH, R_MMIX_CBRANCH},
|
||
{BFD_RELOC_MMIX_PUSHJ, R_MMIX_PUSHJ},
|
||
{BFD_RELOC_MMIX_JMP, R_MMIX_JMP},
|
||
{BFD_RELOC_MMIX_ADDR19, R_MMIX_ADDR19},
|
||
{BFD_RELOC_MMIX_ADDR27, R_MMIX_ADDR27},
|
||
{BFD_RELOC_MMIX_REG_OR_BYTE, R_MMIX_REG_OR_BYTE},
|
||
{BFD_RELOC_MMIX_REG, R_MMIX_REG},
|
||
{BFD_RELOC_MMIX_BASE_PLUS_OFFSET, R_MMIX_BASE_PLUS_OFFSET},
|
||
{BFD_RELOC_MMIX_LOCAL, R_MMIX_LOCAL}
|
||
};
|
||
|
||
static reloc_howto_type *
|
||
bfd_elf64_bfd_reloc_type_lookup (abfd, code)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = 0;
|
||
i < sizeof (mmix_reloc_map) / sizeof (mmix_reloc_map[0]);
|
||
i++)
|
||
{
|
||
if (mmix_reloc_map[i].bfd_reloc_val == code)
|
||
return &elf_mmix_howto_table[mmix_reloc_map[i].elf_reloc_val];
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
|
||
/* This function performs the actual bitfiddling and sanity check for a
|
||
final relocation. Each relocation gets its *worst*-case expansion
|
||
in size when it arrives here; any reduction in size should have been
|
||
caught in linker relaxation earlier. When we get here, the relocation
|
||
looks like the smallest instruction with SWYM:s (nop:s) appended to the
|
||
max size. We fill in those nop:s.
|
||
|
||
R_MMIX_GETA: (FIXME: Relaxation should break this up in 1, 2, 3 tetra)
|
||
GETA $N,foo
|
||
->
|
||
SETL $N,foo & 0xffff
|
||
INCML $N,(foo >> 16) & 0xffff
|
||
INCMH $N,(foo >> 32) & 0xffff
|
||
INCH $N,(foo >> 48) & 0xffff
|
||
|
||
R_MMIX_CBRANCH: (FIXME: Relaxation should break this up, but
|
||
condbranches needing relaxation might be rare enough to not be
|
||
worthwhile.)
|
||
[P]Bcc $N,foo
|
||
->
|
||
[~P]B~cc $N,.+20
|
||
SETL $255,foo & ...
|
||
INCML ...
|
||
INCMH ...
|
||
INCH ...
|
||
GO $255,$255,0
|
||
|
||
R_MMIX_PUSHJ: (FIXME: Relaxation...)
|
||
PUSHJ $N,foo
|
||
->
|
||
SETL $255,foo & ...
|
||
INCML ...
|
||
INCMH ...
|
||
INCH ...
|
||
PUSHGO $N,$255,0
|
||
|
||
R_MMIX_JMP: (FIXME: Relaxation...)
|
||
JMP foo
|
||
->
|
||
SETL $255,foo & ...
|
||
INCML ...
|
||
INCMH ...
|
||
INCH ...
|
||
GO $255,$255,0
|
||
|
||
R_MMIX_ADDR19 and R_MMIX_ADDR27 are just filled in. */
|
||
|
||
static bfd_reloc_status_type
|
||
mmix_elf_perform_relocation (isec, howto, datap, addr, value)
|
||
asection *isec;
|
||
reloc_howto_type *howto;
|
||
PTR datap;
|
||
bfd_vma addr ATTRIBUTE_UNUSED;
|
||
bfd_vma value;
|
||
{
|
||
bfd *abfd = isec->owner;
|
||
bfd_reloc_status_type flag = bfd_reloc_ok;
|
||
bfd_reloc_status_type r;
|
||
int offs = 0;
|
||
int reg = 255;
|
||
|
||
/* The worst case bits are all similar SETL/INCML/INCMH/INCH sequences.
|
||
We handle the differences here and the common sequence later. */
|
||
switch (howto->type)
|
||
{
|
||
case R_MMIX_GETA:
|
||
offs = 0;
|
||
reg = bfd_get_8 (abfd, (bfd_byte *) datap + 1);
|
||
|
||
/* We change to an absolute value. */
|
||
value += addr;
|
||
break;
|
||
|
||
case R_MMIX_CBRANCH:
|
||
{
|
||
int in1 = bfd_get_16 (abfd, (bfd_byte *) datap) << 16;
|
||
|
||
/* Invert the condition and prediction bit, and set the offset
|
||
to five instructions ahead.
|
||
|
||
We *can* do better if we want to. If the branch is found to be
|
||
within limits, we could leave the branch as is; there'll just
|
||
be a bunch of NOP:s after it. But we shouldn't see this
|
||
sequence often enough that it's worth doing it. */
|
||
|
||
bfd_put_32 (abfd,
|
||
(((in1 ^ ((PRED_INV_BIT | COND_INV_BIT) << 24)) & ~0xffff)
|
||
| (24/4)),
|
||
(bfd_byte *) datap);
|
||
|
||
/* Put a "GO $255,$255,0" after the common sequence. */
|
||
bfd_put_32 (abfd,
|
||
((GO_INSN_BYTE | IMM_OFFSET_BIT) << 24) | 0xffff00,
|
||
(bfd_byte *) datap + 20);
|
||
|
||
/* Common sequence starts at offset 4. */
|
||
offs = 4;
|
||
|
||
/* We change to an absolute value. */
|
||
value += addr;
|
||
}
|
||
break;
|
||
|
||
case R_MMIX_PUSHJ:
|
||
{
|
||
int inreg = bfd_get_8 (abfd, (bfd_byte *) datap + 1);
|
||
|
||
/* Put a "PUSHGO $N,$255,0" after the common sequence. */
|
||
bfd_put_32 (abfd,
|
||
((PUSHGO_INSN_BYTE | IMM_OFFSET_BIT) << 24)
|
||
| (inreg << 16)
|
||
| 0xff00,
|
||
(bfd_byte *) datap + 16);
|
||
|
||
/* We change to an absolute value. */
|
||
value += addr;
|
||
}
|
||
break;
|
||
|
||
case R_MMIX_JMP:
|
||
/* This one is a little special. If we get here on a non-relaxing
|
||
link, and the destination is actually in range, we don't need to
|
||
execute the nops.
|
||
If so, we fall through to the bit-fiddling relocs.
|
||
|
||
FIXME: bfd_check_overflow seems broken; the relocation is
|
||
rightshifted before testing, so supply a zero rightshift. */
|
||
|
||
if (! ((value & 3) == 0
|
||
&& (r = bfd_check_overflow (complain_overflow_signed,
|
||
howto->bitsize,
|
||
0,
|
||
bfd_arch_bits_per_address (abfd),
|
||
value)) == bfd_reloc_ok))
|
||
{
|
||
/* If the relocation doesn't fit in a JMP, we let the NOP:s be
|
||
modified below, and put a "GO $255,$255,0" after the
|
||
address-loading sequence. */
|
||
bfd_put_32 (abfd,
|
||
((GO_INSN_BYTE | IMM_OFFSET_BIT) << 24)
|
||
| 0xffff00,
|
||
(bfd_byte *) datap + 16);
|
||
|
||
/* We change to an absolute value. */
|
||
value += addr;
|
||
break;
|
||
}
|
||
/* FALLTHROUGH. */
|
||
case R_MMIX_ADDR19:
|
||
case R_MMIX_ADDR27:
|
||
/* These must be in range, or else we emit an error. */
|
||
if ((value & 3) == 0
|
||
/* Note rightshift 0; see above. */
|
||
&& (r = bfd_check_overflow (complain_overflow_signed,
|
||
howto->bitsize,
|
||
0,
|
||
bfd_arch_bits_per_address (abfd),
|
||
value)) == bfd_reloc_ok)
|
||
{
|
||
bfd_vma in1
|
||
= bfd_get_32 (abfd, (bfd_byte *) datap);
|
||
bfd_vma highbit;
|
||
|
||
if ((bfd_signed_vma) value < 0)
|
||
{
|
||
highbit = (1 << 24);
|
||
value += (1 << (howto->bitsize - 1));
|
||
}
|
||
else
|
||
highbit = 0;
|
||
|
||
value >>= 2;
|
||
|
||
bfd_put_32 (abfd,
|
||
(in1 & ~howto->src_mask)
|
||
| highbit
|
||
| (value & howto->dst_mask),
|
||
(bfd_byte *) datap);
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
else
|
||
return bfd_reloc_overflow;
|
||
|
||
case R_MMIX_REG_OR_BYTE:
|
||
case R_MMIX_REG:
|
||
if (value > 255)
|
||
return bfd_reloc_overflow;
|
||
bfd_put_8 (abfd, value, datap);
|
||
return bfd_reloc_ok;
|
||
|
||
default:
|
||
BAD_CASE (howto->type);
|
||
}
|
||
|
||
/* This code adds the common SETL/INCML/INCMH/INCH worst-case
|
||
sequence. */
|
||
|
||
/* Lowest two bits must be 0. We return bfd_reloc_overflow for
|
||
everything that looks strange. */
|
||
if (value & 3)
|
||
flag = bfd_reloc_overflow;
|
||
|
||
bfd_put_32 (abfd,
|
||
(SETL_INSN_BYTE << 24) | (value & 0xffff) | (reg << 16),
|
||
(bfd_byte *) datap + offs);
|
||
bfd_put_32 (abfd,
|
||
(INCML_INSN_BYTE << 24) | ((value >> 16) & 0xffff) | (reg << 16),
|
||
(bfd_byte *) datap + offs + 4);
|
||
bfd_put_32 (abfd,
|
||
(INCMH_INSN_BYTE << 24) | ((value >> 32) & 0xffff) | (reg << 16),
|
||
(bfd_byte *) datap + offs + 8);
|
||
bfd_put_32 (abfd,
|
||
(INCH_INSN_BYTE << 24) | ((value >> 48) & 0xffff) | (reg << 16),
|
||
(bfd_byte *) datap + offs + 12);
|
||
|
||
return flag;
|
||
}
|
||
|
||
/* Set the howto pointer for an MMIX ELF reloc (type RELA). */
|
||
|
||
static void
|
||
mmix_info_to_howto_rela (abfd, cache_ptr, dst)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *cache_ptr;
|
||
Elf64_Internal_Rela *dst;
|
||
{
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF64_R_TYPE (dst->r_info);
|
||
BFD_ASSERT (r_type < (unsigned int) R_MMIX_max);
|
||
cache_ptr->howto = &elf_mmix_howto_table[r_type];
|
||
}
|
||
|
||
/* Any MMIX-specific relocation gets here at assembly time or when linking
|
||
to other formats (such as mmo); this is the relocation function from
|
||
the reloc_table. We don't get here for final pure ELF linking. */
|
||
|
||
static bfd_reloc_status_type
|
||
mmix_elf_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_vma relocation;
|
||
bfd_reloc_status_type r;
|
||
asection *reloc_target_output_section;
|
||
bfd_reloc_status_type flag = bfd_reloc_ok;
|
||
bfd_vma output_base = 0;
|
||
bfd_vma addr;
|
||
|
||
r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
/* If that was all that was needed (i.e. this isn't a final link, only
|
||
some segment adjustments), we're done. */
|
||
if (r != bfd_reloc_continue)
|
||
return r;
|
||
|
||
if (bfd_is_und_section (symbol->section)
|
||
&& (symbol->flags & BSF_WEAK) == 0
|
||
&& output_bfd == (bfd *) NULL)
|
||
return bfd_reloc_undefined;
|
||
|
||
/* Is the address of the relocation really within the section? */
|
||
if (reloc_entry->address > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
/* Work out which section the relocation is targetted at and the
|
||
initial relocation command value. */
|
||
|
||
/* Get symbol value. (Common symbols are special.) */
|
||
if (bfd_is_com_section (symbol->section))
|
||
relocation = 0;
|
||
else
|
||
relocation = symbol->value;
|
||
|
||
reloc_target_output_section = bfd_get_output_section (symbol);
|
||
|
||
/* Here the variable relocation holds the final address of the symbol we
|
||
are relocating against, plus any addend. */
|
||
if (output_bfd)
|
||
output_base = 0;
|
||
else
|
||
output_base = reloc_target_output_section->vma;
|
||
|
||
relocation += output_base + symbol->section->output_offset;
|
||
|
||
/* Get position of relocation. */
|
||
addr = (reloc_entry->address + input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
if (output_bfd != (bfd *) NULL)
|
||
{
|
||
/* Add in supplied addend. */
|
||
relocation += reloc_entry->addend;
|
||
|
||
/* This is a partial relocation, and we want to apply the
|
||
relocation to the reloc entry rather than the raw data.
|
||
Modify the reloc inplace to reflect what we now know. */
|
||
reloc_entry->addend = relocation;
|
||
reloc_entry->address += input_section->output_offset;
|
||
return flag;
|
||
}
|
||
|
||
return mmix_final_link_relocate (reloc_entry->howto, input_section,
|
||
data, reloc_entry->address,
|
||
reloc_entry->addend, relocation,
|
||
bfd_asymbol_name (symbol),
|
||
reloc_target_output_section);
|
||
}
|
||
|
||
/* Relocate an MMIX ELF section. Modified from elf32-fr30.c; look to it
|
||
for guidance if you're thinking of copying this. */
|
||
|
||
static boolean
|
||
mmix_elf_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, local_syms, local_sections)
|
||
bfd *output_bfd ATTRIBUTE_UNUSED;
|
||
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;
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
Elf_Internal_Rela *rel;
|
||
Elf_Internal_Rela *relend;
|
||
|
||
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (input_bfd);
|
||
relend = relocs + input_section->reloc_count;
|
||
|
||
for (rel = relocs; rel < relend; rel ++)
|
||
{
|
||
reloc_howto_type *howto;
|
||
unsigned long r_symndx;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sec;
|
||
struct elf_link_hash_entry *h;
|
||
bfd_vma relocation;
|
||
bfd_reloc_status_type r;
|
||
const char *name = NULL;
|
||
int r_type;
|
||
boolean undefined_signalled = false;
|
||
|
||
r_type = ELF64_R_TYPE (rel->r_info);
|
||
|
||
if (r_type == R_MMIX_GNU_VTINHERIT
|
||
|| r_type == R_MMIX_GNU_VTENTRY)
|
||
continue;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
|
||
if (info->relocateable)
|
||
{
|
||
/* This is a relocateable link. We don't have to change
|
||
anything, unless the reloc is against a section symbol,
|
||
in which case we have to adjust according to where the
|
||
section symbol winds up in the output section. */
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
sym = local_syms + r_symndx;
|
||
|
||
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
||
{
|
||
sec = local_sections [r_symndx];
|
||
rel->r_addend += sec->output_offset + sym->st_value;
|
||
}
|
||
}
|
||
|
||
continue;
|
||
}
|
||
|
||
/* This is a final link. */
|
||
howto = elf_mmix_howto_table + ELF64_R_TYPE (rel->r_info);
|
||
h = NULL;
|
||
sym = NULL;
|
||
sec = NULL;
|
||
|
||
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);
|
||
|
||
name = bfd_elf_string_from_elf_section
|
||
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
||
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
||
}
|
||
else
|
||
{
|
||
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;
|
||
|
||
name = h->root.root.string;
|
||
|
||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
{
|
||
sec = h->root.u.def.section;
|
||
relocation = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
}
|
||
else if (h->root.type == bfd_link_hash_undefweak)
|
||
relocation = 0;
|
||
else if (info->shared
|
||
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
||
relocation = 0;
|
||
else
|
||
{
|
||
/* The test on undefined_signalled is redundant at the
|
||
moment, but kept for symmetry. */
|
||
if (! undefined_signalled
|
||
&& ! ((*info->callbacks->undefined_symbol)
|
||
(info, h->root.root.string, input_bfd,
|
||
input_section, rel->r_offset, true)))
|
||
return false;
|
||
undefined_signalled = true;
|
||
relocation = 0;
|
||
}
|
||
}
|
||
|
||
r = mmix_final_link_relocate (howto, input_section,
|
||
contents, rel->r_offset,
|
||
rel->r_addend, relocation, name, sec);
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
boolean check_ok = true;
|
||
const char * msg = (const char *) NULL;
|
||
|
||
switch (r)
|
||
{
|
||
case bfd_reloc_overflow:
|
||
check_ok = info->callbacks->reloc_overflow
|
||
(info, name, howto->name, (bfd_vma) 0,
|
||
input_bfd, input_section, rel->r_offset);
|
||
break;
|
||
|
||
case bfd_reloc_undefined:
|
||
/* We may have sent this message above. */
|
||
if (! undefined_signalled)
|
||
check_ok = info->callbacks->undefined_symbol
|
||
(info, name, input_bfd, input_section, rel->r_offset,
|
||
true);
|
||
undefined_signalled = true;
|
||
break;
|
||
|
||
case bfd_reloc_outofrange:
|
||
msg = _("internal error: out of range error");
|
||
break;
|
||
|
||
case bfd_reloc_notsupported:
|
||
msg = _("internal error: unsupported relocation error");
|
||
break;
|
||
|
||
case bfd_reloc_dangerous:
|
||
msg = _("internal error: dangerous relocation");
|
||
break;
|
||
|
||
default:
|
||
msg = _("internal error: unknown error");
|
||
break;
|
||
}
|
||
|
||
if (msg)
|
||
check_ok = info->callbacks->warning
|
||
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
||
|
||
if (! check_ok)
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Perform a single relocation. By default we use the standard BFD
|
||
routines. A few relocs we have to do ourselves. */
|
||
|
||
static bfd_reloc_status_type
|
||
mmix_final_link_relocate (howto, input_section, contents,
|
||
r_offset, r_addend, relocation, symname, symsec)
|
||
reloc_howto_type *howto;
|
||
asection *input_section;
|
||
bfd_byte *contents;
|
||
bfd_vma r_offset;
|
||
bfd_signed_vma r_addend;
|
||
bfd_vma relocation;
|
||
const char *symname;
|
||
asection *symsec;
|
||
{
|
||
bfd_reloc_status_type r = bfd_reloc_ok;
|
||
bfd_vma addr
|
||
= (input_section->output_section->vma
|
||
+ input_section->output_offset
|
||
+ r_offset);
|
||
bfd_signed_vma srel
|
||
= (bfd_signed_vma) relocation + r_addend;
|
||
|
||
switch (howto->type)
|
||
{
|
||
/* All these are PC-relative. */
|
||
case R_MMIX_PUSHJ:
|
||
case R_MMIX_CBRANCH:
|
||
case R_MMIX_ADDR19:
|
||
case R_MMIX_GETA:
|
||
case R_MMIX_ADDR27:
|
||
case R_MMIX_JMP:
|
||
contents += r_offset;
|
||
|
||
srel -= (input_section->output_section->vma
|
||
+ input_section->output_offset
|
||
+ r_offset);
|
||
|
||
r = mmix_elf_perform_relocation (input_section, howto, contents,
|
||
addr, srel);
|
||
break;
|
||
|
||
case R_MMIX_REG_OR_BYTE:
|
||
case R_MMIX_REG:
|
||
/* For now, we handle these alike. They must refer to an register
|
||
symbol, which is either relative to the register section and in
|
||
the range 0..255, or is in the register contents section with vma
|
||
regno * 8. */
|
||
|
||
/* FIXME: A better way to check for reg contents section?
|
||
FIXME: Postpone section->scaling to mmix_elf_perform_relocation? */
|
||
if (symsec == NULL)
|
||
return bfd_reloc_undefined;
|
||
|
||
if (strcmp (bfd_get_section_name (symsec->owner, symsec),
|
||
MMIX_REG_CONTENTS_SECTION_NAME) == 0)
|
||
{
|
||
if ((srel & 7) != 0 || srel < 32*8 || srel > 255*8)
|
||
{
|
||
/* The bfd_reloc_outofrange return value, though intuitively
|
||
a better value, will not get us an error. */
|
||
return bfd_reloc_overflow;
|
||
}
|
||
srel /= 8;
|
||
}
|
||
else if (strcmp (bfd_get_section_name (symsec->owner, symsec),
|
||
MMIX_REG_SECTION_NAME) == 0)
|
||
{
|
||
if (srel < 0 || srel > 255)
|
||
/* The bfd_reloc_outofrange return value, though intuitively a
|
||
better value, will not get us an error. */
|
||
return bfd_reloc_overflow;
|
||
}
|
||
else
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: register relocation against non-register symbol: %s in %s"),
|
||
bfd_get_filename (input_section->owner),
|
||
symname == NULL || *symname == 0 ? _("(unknown)") : symname,
|
||
bfd_get_section_name (symsec->owner, symsec));
|
||
|
||
/* The bfd_reloc_outofrange return value, though intuitively a
|
||
better value, will not get us an error. */
|
||
return bfd_reloc_overflow;
|
||
}
|
||
contents += r_offset;
|
||
r = mmix_elf_perform_relocation (input_section, howto, contents,
|
||
addr, srel);
|
||
break;
|
||
|
||
case R_MMIX_LOCAL:
|
||
/* This isn't a real relocation, it's just an assertion that the
|
||
final relocation value corresponds to a local register. We
|
||
ignore the actual relocation; nothing is changed. */
|
||
{
|
||
asection *regsec
|
||
= bfd_get_section_by_name (input_section->output_section->owner,
|
||
MMIX_REG_CONTENTS_SECTION_NAME);
|
||
bfd_vma first_global;
|
||
|
||
/* Check that this is an absolute value, or a reference to the
|
||
register contents section or the register (symbol) section.
|
||
Absolute numbers can get here as undefined section. Undefined
|
||
symbols are signalled elsewhere, so there's no conflict in us
|
||
accidentally handling it. */
|
||
if (!bfd_is_abs_section (symsec)
|
||
&& !bfd_is_und_section (symsec)
|
||
&& strcmp (bfd_get_section_name (symsec->owner, symsec),
|
||
MMIX_REG_CONTENTS_SECTION_NAME) != 0
|
||
&& strcmp (bfd_get_section_name (symsec->owner, symsec),
|
||
MMIX_REG_SECTION_NAME) != 0)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: directive LOCAL valid only with a register or absolute value"),
|
||
bfd_get_filename (input_section->owner));
|
||
|
||
return bfd_reloc_overflow;
|
||
}
|
||
|
||
/* If we don't have a register contents section, then $255 is the
|
||
first global register. */
|
||
if (regsec == NULL)
|
||
first_global = 255;
|
||
else
|
||
{
|
||
first_global = bfd_get_section_vma (abfd, regsec) / 8;
|
||
if (strcmp (bfd_get_section_name (symsec->owner, symsec),
|
||
MMIX_REG_CONTENTS_SECTION_NAME) == 0)
|
||
{
|
||
if ((srel & 7) != 0 || srel < 32*8 || srel > 255*8)
|
||
/* The bfd_reloc_outofrange return value, though
|
||
intuitively a better value, will not get us an error. */
|
||
return bfd_reloc_overflow;
|
||
srel /= 8;
|
||
}
|
||
}
|
||
|
||
if ((bfd_vma) srel >= first_global)
|
||
{
|
||
/* FIXME: Better error message. */
|
||
(*_bfd_error_handler)
|
||
(_("%s: LOCAL directive: Register $%ld is not a local register. First global register is $%ld."),
|
||
bfd_get_filename (input_section->owner), (long) srel, (long) first_global);
|
||
|
||
return bfd_reloc_overflow;
|
||
}
|
||
}
|
||
r = bfd_reloc_ok;
|
||
break;
|
||
|
||
default:
|
||
r = _bfd_final_link_relocate (howto, input_section->owner, input_section,
|
||
contents, r_offset,
|
||
relocation, r_addend);
|
||
}
|
||
|
||
return r;
|
||
}
|
||
|
||
/* Return the section that should be marked against GC for a given
|
||
relocation. */
|
||
|
||
static asection *
|
||
mmix_elf_gc_mark_hook (abfd, info, rel, h, sym)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
Elf_Internal_Rela *rel;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
{
|
||
if (h != NULL)
|
||
{
|
||
switch (ELF64_R_TYPE (rel->r_info))
|
||
{
|
||
case R_MMIX_GNU_VTINHERIT:
|
||
case R_MMIX_GNU_VTENTRY:
|
||
break;
|
||
|
||
default:
|
||
switch (h->root.type)
|
||
{
|
||
case bfd_link_hash_defined:
|
||
case bfd_link_hash_defweak:
|
||
return h->root.u.def.section;
|
||
|
||
case bfd_link_hash_common:
|
||
return h->root.u.c.p->section;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (!(elf_bad_symtab (abfd)
|
||
&& ELF_ST_BIND (sym->st_info) != STB_LOCAL)
|
||
&& ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
|
||
&& sym->st_shndx != SHN_COMMON))
|
||
{
|
||
return bfd_section_from_elf_index (abfd, sym->st_shndx);
|
||
}
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Sort register relocs to come before expanding relocs. */
|
||
|
||
static int
|
||
mmix_elf_sort_relocs (p1, p2)
|
||
const PTR p1;
|
||
const PTR p2;
|
||
{
|
||
const Elf_Internal_Rela *r1 = (const Elf_Internal_Rela *) p1;
|
||
const Elf_Internal_Rela *r2 = (const Elf_Internal_Rela *) p2;
|
||
int r1_is_reg, r2_is_reg;
|
||
|
||
/* Sort primarily on r_offset & ~3, so relocs are done to consecutive
|
||
insns. */
|
||
if ((r1->r_offset & ~(bfd_vma) 3) > (r2->r_offset & ~(bfd_vma) 3))
|
||
return 1;
|
||
else if ((r1->r_offset & ~(bfd_vma) 3) < (r2->r_offset & ~(bfd_vma) 3))
|
||
return -1;
|
||
|
||
r1_is_reg
|
||
= (ELF64_R_TYPE (r1->r_info) == R_MMIX_REG_OR_BYTE
|
||
|| ELF64_R_TYPE (r1->r_info) == R_MMIX_REG);
|
||
r2_is_reg
|
||
= (ELF64_R_TYPE (r2->r_info) == R_MMIX_REG_OR_BYTE
|
||
|| ELF64_R_TYPE (r2->r_info) == R_MMIX_REG);
|
||
if (r1_is_reg != r2_is_reg)
|
||
return r2_is_reg - r1_is_reg;
|
||
|
||
/* Neither or both are register relocs. Then sort on full offset. */
|
||
if (r1->r_offset > r2->r_offset)
|
||
return 1;
|
||
else if (r1->r_offset < r2->r_offset)
|
||
return -1;
|
||
return 0;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase. */
|
||
|
||
static boolean
|
||
mmix_elf_check_relocs (abfd, info, sec, relocs)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
asection *sec;
|
||
const Elf_Internal_Rela *relocs;
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
|
||
if (info->relocateable)
|
||
return true;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf64_External_Sym);
|
||
if (!elf_bad_symtab (abfd))
|
||
sym_hashes_end -= symtab_hdr->sh_info;
|
||
|
||
/* First we sort the relocs so that any register relocs come before
|
||
expansion-relocs to the same insn. FIXME: Not done for mmo. */
|
||
qsort ((PTR) relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
|
||
mmix_elf_sort_relocs);
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
struct elf_link_hash_entry *h;
|
||
unsigned long r_symndx;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
h = NULL;
|
||
else
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
switch (ELF64_R_TYPE (rel->r_info))
|
||
{
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_MMIX_GNU_VTINHERIT:
|
||
if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
||
return false;
|
||
break;
|
||
|
||
/* This relocation describes which C++ vtable entries are actually
|
||
used. Record for later use during GC. */
|
||
case R_MMIX_GNU_VTENTRY:
|
||
if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return false;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Change symbols relative to the reg contents section to instead be to
|
||
the register section, and scale them down to correspond to the register
|
||
number. */
|
||
|
||
static boolean
|
||
mmix_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
const char *name ATTRIBUTE_UNUSED;
|
||
Elf_Internal_Sym *sym;
|
||
asection *input_sec;
|
||
{
|
||
if (input_sec != NULL
|
||
&& input_sec->name != NULL
|
||
&& ELF_ST_TYPE (sym->st_info) != STT_SECTION
|
||
&& strcmp (input_sec->name, MMIX_REG_CONTENTS_SECTION_NAME) == 0)
|
||
{
|
||
sym->st_value /= 8;
|
||
sym->st_shndx = SHN_REGISTER;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* We fake a register section that holds values that are register numbers.
|
||
Having a SHN_REGISTER and register section translates better to other
|
||
formats (e.g. mmo) than for example a STT_REGISTER attribute.
|
||
This section faking is based on a construct in elf32-mips.c. */
|
||
static asection mmix_elf_reg_section;
|
||
static asymbol mmix_elf_reg_section_symbol;
|
||
static asymbol *mmix_elf_reg_section_symbol_ptr;
|
||
|
||
/* Handle the special MIPS section numbers that a symbol may use.
|
||
This is used for both the 32-bit and the 64-bit ABI. */
|
||
|
||
void
|
||
mmix_elf_symbol_processing (abfd, asym)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
asymbol *asym;
|
||
{
|
||
elf_symbol_type *elfsym;
|
||
|
||
elfsym = (elf_symbol_type *) asym;
|
||
switch (elfsym->internal_elf_sym.st_shndx)
|
||
{
|
||
case SHN_REGISTER:
|
||
if (mmix_elf_reg_section.name == NULL)
|
||
{
|
||
/* Initialize the register section. */
|
||
mmix_elf_reg_section.name = MMIX_REG_SECTION_NAME;
|
||
mmix_elf_reg_section.flags = SEC_NO_FLAGS;
|
||
mmix_elf_reg_section.output_section = &mmix_elf_reg_section;
|
||
mmix_elf_reg_section.symbol = &mmix_elf_reg_section_symbol;
|
||
mmix_elf_reg_section.symbol_ptr_ptr = &mmix_elf_reg_section_symbol_ptr;
|
||
mmix_elf_reg_section_symbol.name = MMIX_REG_SECTION_NAME;
|
||
mmix_elf_reg_section_symbol.flags = BSF_SECTION_SYM;
|
||
mmix_elf_reg_section_symbol.section = &mmix_elf_reg_section;
|
||
mmix_elf_reg_section_symbol_ptr = &mmix_elf_reg_section_symbol;
|
||
}
|
||
asym->section = &mmix_elf_reg_section;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Given a BFD section, try to locate the corresponding ELF section
|
||
index. */
|
||
|
||
static boolean
|
||
mmix_elf_section_from_bfd_section (abfd, hdr, sec, retval)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
Elf64_Internal_Shdr * hdr ATTRIBUTE_UNUSED;
|
||
asection * sec;
|
||
int * retval;
|
||
{
|
||
if (strcmp (bfd_get_section_name (abfd, sec), MMIX_REG_SECTION_NAME) == 0)
|
||
*retval = SHN_REGISTER;
|
||
else
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Hook called by the linker routine which adds symbols from an object
|
||
file. We must handle the special SHN_REGISTER section number here.
|
||
|
||
We also check that we only have *one* each of the section-start
|
||
symbols, since otherwise having two with the same value would cause
|
||
them to be "merged", but with the contents serialized. */
|
||
|
||
boolean
|
||
mmix_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
const Elf_Internal_Sym *sym;
|
||
const char **namep ATTRIBUTE_UNUSED;
|
||
flagword *flagsp ATTRIBUTE_UNUSED;
|
||
asection **secp;
|
||
bfd_vma *valp ATTRIBUTE_UNUSED;
|
||
{
|
||
if (sym->st_shndx == SHN_REGISTER)
|
||
*secp = bfd_make_section_old_way (abfd, MMIX_REG_SECTION_NAME);
|
||
else if ((*namep)[0] == '_' && (*namep)[1] == '_' && (*namep)[2] == '.'
|
||
&& strncmp (*namep, MMIX_LOC_SECTION_START_SYMBOL_PREFIX,
|
||
strlen (MMIX_LOC_SECTION_START_SYMBOL_PREFIX)) == 0)
|
||
{
|
||
/* See if we have another one. */
|
||
struct elf_link_hash_entry *h
|
||
= (struct elf_link_hash_entry *) bfd_link_hash_lookup (info->hash,
|
||
*namep,
|
||
false,
|
||
false, false);
|
||
|
||
if (h != NULL && h->root.type != bfd_link_hash_undefined)
|
||
{
|
||
/* How do we get the asymbol (or really: the filename) from h?
|
||
h->root.u.def.section->owner is NULL. */
|
||
((*_bfd_error_handler)
|
||
(_("%s: Error: multiple definition of `%s'; start of %s is set in a earlier linked file\n"),
|
||
bfd_get_filename (abfd), *namep,
|
||
*namep + strlen (MMIX_LOC_SECTION_START_SYMBOL_PREFIX)));
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* We consider symbols matching "L.*:[0-9]+" to be local symbols. */
|
||
|
||
boolean
|
||
mmix_elf_is_local_label_name (abfd, name)
|
||
bfd *abfd;
|
||
const char *name;
|
||
{
|
||
const char *colpos;
|
||
int digits;
|
||
|
||
/* Also include the default local-label definition. */
|
||
if (_bfd_elf_is_local_label_name (abfd, name))
|
||
return true;
|
||
|
||
if (*name != 'L')
|
||
return false;
|
||
|
||
/* If there's no ":", or more than one, it's not a local symbol. */
|
||
colpos = strchr (name, ':');
|
||
if (colpos == NULL || strchr (colpos + 1, ':') != NULL)
|
||
return false;
|
||
|
||
/* Check that there are remaining characters and that they are digits. */
|
||
if (colpos[1] == 0)
|
||
return false;
|
||
|
||
digits = strspn (colpos + 1, "0123456789");
|
||
return digits != 0 && colpos[1 + digits] == 0;
|
||
}
|
||
|
||
/* We get rid of the register section here. */
|
||
|
||
boolean
|
||
mmix_elf_final_link (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
/* We never output a register section, though we create one for
|
||
temporary measures. Check that nobody entered contents into it. */
|
||
asection *reg_section;
|
||
asection **secpp;
|
||
|
||
reg_section = bfd_get_section_by_name (abfd, MMIX_REG_SECTION_NAME);
|
||
|
||
if (reg_section != NULL)
|
||
{
|
||
/* FIXME: Pass error state gracefully. */
|
||
if (bfd_get_section_flags (abfd, reg_section) & SEC_HAS_CONTENTS)
|
||
_bfd_abort (__FILE__, __LINE__, _("Register section has contents\n"));
|
||
|
||
/* FIXME: This does not seem like the proper way to kill a section,
|
||
but it's the way it's done elsewhere, like elf64-alpha.c. */
|
||
/* Really remove the section. */
|
||
for (secpp = &abfd->sections;
|
||
*secpp != reg_section;
|
||
secpp = &(*secpp)->next)
|
||
;
|
||
*secpp = (*secpp)->next;
|
||
--abfd->section_count;
|
||
}
|
||
|
||
if (! bfd_elf64_bfd_final_link (abfd, info))
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
#define ELF_ARCH bfd_arch_mmix
|
||
#define ELF_MACHINE_CODE EM_MMIX
|
||
|
||
/* According to mmix-doc page 36 (paragraph 45), this should be (1LL << 48LL).
|
||
However, that's too much for something somewhere in the linker part of
|
||
BFD; perhaps the start-address has to be a non-zero multiple of this
|
||
number, or larger than this number. The symptom is that the linker
|
||
complains: "warning: allocated section `.text' not in segment". We
|
||
settle for 64k; the page-size used in examples is 8k.
|
||
#define ELF_MAXPAGESIZE 0x10000
|
||
|
||
Unfortunately, this causes excessive padding in the supposedly small
|
||
for-education programs that are the expected usage (where people would
|
||
inspect output). We stick to 256 bytes just to have *some* default
|
||
alignment. */
|
||
#define ELF_MAXPAGESIZE 0x100
|
||
|
||
#define TARGET_BIG_SYM bfd_elf64_mmix_vec
|
||
#define TARGET_BIG_NAME "elf64-mmix"
|
||
|
||
#define elf_info_to_howto_rel NULL
|
||
#define elf_info_to_howto mmix_info_to_howto_rela
|
||
#define elf_backend_relocate_section mmix_elf_relocate_section
|
||
#define elf_backend_gc_mark_hook mmix_elf_gc_mark_hook
|
||
#define elf_backend_link_output_symbol_hook \
|
||
mmix_elf_link_output_symbol_hook
|
||
#define elf_backend_add_symbol_hook mmix_elf_add_symbol_hook
|
||
|
||
#define elf_backend_check_relocs mmix_elf_check_relocs
|
||
#define elf_backend_symbol_processing mmix_elf_symbol_processing
|
||
|
||
#define bfd_elf64_bfd_is_local_label_name \
|
||
mmix_elf_is_local_label_name
|
||
|
||
#define elf_backend_may_use_rel_p 0
|
||
#define elf_backend_may_use_rela_p 1
|
||
#define elf_backend_default_use_rela_p 1
|
||
|
||
#define elf_backend_can_gc_sections 1
|
||
#define elf_backend_section_from_bfd_section \
|
||
mmix_elf_section_from_bfd_section
|
||
|
||
#define bfd_elf64_bfd_final_link mmix_elf_final_link
|
||
|
||
#include "elf64-target.h"
|