/* MeP-specific support for 32-bit ELF.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 2001-2020 Free Software Foundation, Inc.
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
+ 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,
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#include "sysdep.h"
#include "bfd.h"
/* Private relocation functions. */
\f
#define MEPREL(type, size, bits, right, left, pcrel, overflow, mask) \
- {(unsigned)type, right, size, bits, pcrel, left, overflow, mep_reloc, #type, FALSE, 0, mask, 0 }
+ HOWTO (type, right, size, bits, pcrel, left, overflow, bfd_elf_generic_reloc, #type, FALSE, 0, mask, 0)
#define N complain_overflow_dont
#define S complain_overflow_signed
#define U complain_overflow_unsigned
-static bfd_reloc_status_type mep_reloc (bfd *, arelent *, struct bfd_symbol *,
- void *, asection *, bfd *, char **);
-
static reloc_howto_type mep_elf_howto_table [] =
{
/* type, size, bits, leftshift, rightshift, pcrel, OD/OS/OU, mask. */
- MEPREL (R_MEP_NONE, 0, 0, 0, 0, 0, N, 0),
- MEPREL (R_RELC, 0, 0, 0, 0, 0, N, 0),
+ MEPREL (R_MEP_NONE, 3, 0, 0, 0, 0, N, 0),
+ MEPREL (R_RELC, 0, 0, 0, 0, 0, N, 0),
/* MEPRELOC:HOWTO */
/* This section generated from bfd/mep-relocs.pl from include/elf/mep.h. */
- MEPREL (R_MEP_8, 0, 8, 0, 0, 0, U, 0xff),
- MEPREL (R_MEP_16, 1, 16, 0, 0, 0, U, 0xffff),
- MEPREL (R_MEP_32, 2, 32, 0, 0, 0, U, 0xffffffff),
+ MEPREL (R_MEP_8, 0, 8, 0, 0, 0, U, 0xff),
+ MEPREL (R_MEP_16, 1, 16, 0, 0, 0, U, 0xffff),
+ MEPREL (R_MEP_32, 2, 32, 0, 0, 0, U, 0xffffffff),
MEPREL (R_MEP_PCREL8A2, 1, 8, 1, 1, 1, S, 0x00fe),
MEPREL (R_MEP_PCREL12A2,1, 12, 1, 1, 1, S, 0x0ffe),
MEPREL (R_MEP_PCREL17A2,2, 17, 0, 1, 1, S, 0x0000ffff),
MEPREL (R_MEP_PCREL24A2,2, 24, 0, 1, 1, S, 0x07f0ffff),
MEPREL (R_MEP_PCABS24A2,2, 24, 0, 1, 0, U, 0x07f0ffff),
- MEPREL (R_MEP_LOW16, 2, 16, 0, 0, 0, N, 0x0000ffff),
- MEPREL (R_MEP_HI16U, 2, 32, 0,16, 0, N, 0x0000ffff),
- MEPREL (R_MEP_HI16S, 2, 32, 0,16, 0, N, 0x0000ffff),
- MEPREL (R_MEP_GPREL, 2, 16, 0, 0, 0, S, 0x0000ffff),
- MEPREL (R_MEP_TPREL, 2, 16, 0, 0, 0, S, 0x0000ffff),
- MEPREL (R_MEP_TPREL7, 1, 7, 0, 0, 0, U, 0x007f),
+ MEPREL (R_MEP_LOW16, 2, 16, 0, 0, 0, N, 0x0000ffff),
+ MEPREL (R_MEP_HI16U, 2, 32, 0,16, 0, N, 0x0000ffff),
+ MEPREL (R_MEP_HI16S, 2, 32, 0,16, 0, N, 0x0000ffff),
+ MEPREL (R_MEP_GPREL, 2, 16, 0, 0, 0, S, 0x0000ffff),
+ MEPREL (R_MEP_TPREL, 2, 16, 0, 0, 0, S, 0x0000ffff),
+ MEPREL (R_MEP_TPREL7, 1, 7, 0, 0, 0, U, 0x007f),
MEPREL (R_MEP_TPREL7A2, 1, 7, 1, 1, 0, U, 0x007e),
MEPREL (R_MEP_TPREL7A4, 1, 7, 2, 2, 0, U, 0x007c),
- MEPREL (R_MEP_UIMM24, 2, 24, 0, 0, 0, U, 0x00ffffff),
+ MEPREL (R_MEP_UIMM24, 2, 24, 0, 0, 0, U, 0x00ffffff),
MEPREL (R_MEP_ADDR24A4, 2, 24, 0, 2, 0, U, 0x00fcffff),
MEPREL (R_MEP_GNU_VTINHERIT,1, 0,16,32, 0, N, 0x0000),
- MEPREL (R_MEP_GNU_VTENTRY,1, 0,16,32, 0, N, 0x0000),
+ MEPREL (R_MEP_GNU_VTENTRY,1, 0,16,32, 0, N, 0x0000),
/* MEPRELOC:END */
};
#undef N
#undef S
#undef U
-
-static bfd_reloc_status_type
-mep_reloc
- (bfd * abfd ATTRIBUTE_UNUSED,
- arelent * reloc_entry ATTRIBUTE_UNUSED,
- struct bfd_symbol * symbol ATTRIBUTE_UNUSED,
- void * data ATTRIBUTE_UNUSED,
- asection * input_section ATTRIBUTE_UNUSED,
- bfd * output_bfd ATTRIBUTE_UNUSED,
- char ** error_message ATTRIBUTE_UNUSED)
-{
- return bfd_reloc_ok;
-}
-
\f
#define BFD_RELOC_MEP_NONE BFD_RELOC_NONE
default:
/* Pacify gcc -Wall. */
- fprintf (stderr, "mep: no reloc for code %d\n", code);
+ _bfd_error_handler (_("mep: no reloc for code %d"), code);
return NULL;
}
if (mep_elf_howto_table[type].type != type)
{
- fprintf (stderr, "MeP: howto %d has type %d\n", type, mep_elf_howto_table[type].type);
+ /* xgettext:c-format */
+ _bfd_error_handler (_("MeP: howto %d has type %d"),
+ type, mep_elf_howto_table[type].type);
abort ();
}
static bfd_reloc_status_type
mep_final_link_relocate
- (reloc_howto_type * howto,
- bfd * input_bfd,
- asection * input_section,
- bfd_byte * contents,
+ (reloc_howto_type * howto,
+ bfd * input_bfd,
+ asection * input_section,
+ bfd_byte * contents,
Elf_Internal_Rela * rel,
- bfd_vma relocation)
+ bfd_vma relocation)
{
unsigned long u;
long s;
byte[3^e2] = ((u >> 16) & 0xff);
break;
case R_MEP_HI16S: /* ----------------vutsrqponmlkjihg */
+ if (s & 0x8000)
+ s += 0x10000;
byte[2^e2] = ((s >> 24) & 0xff);
byte[3^e2] = ((s >> 16) & 0xff);
break;
\f
/* Set the howto pointer for a MEP ELF reloc. */
-static void
-mep_info_to_howto_rela
- (bfd * abfd ATTRIBUTE_UNUSED,
- arelent * cache_ptr,
- Elf_Internal_Rela * dst)
+static bfd_boolean
+mep_info_to_howto_rela (bfd * abfd,
+ arelent * cache_ptr,
+ Elf_Internal_Rela * dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
- cache_ptr->howto = & mep_elf_howto_table [r_type];
-}
-
-/* Look through the relocs for a section during the first phase.
- Since we don't do .gots or .plts, we just need to consider the
- virtual table relocs for gc. */
-
-static bfd_boolean
-mep_elf_check_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;
- struct elf_link_hash_entry ** sym_hashes_end;
- const Elf_Internal_Rela * rel;
- const Elf_Internal_Rela * rel_end;
-
- if (info->relocatable)
- 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 (Elf32_External_Sym);
- if (!elf_bad_symtab (abfd))
- sym_hashes_end -= symtab_hdr->sh_info;
-
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
+ if (r_type >= R_MEP_max)
{
- struct elf_link_hash_entry *h;
- unsigned long r_symndx;
-
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
+ cache_ptr->howto = & mep_elf_howto_table [r_type];
return TRUE;
}
-
\f
/* Relocate a MEP ELF section.
There is some attempt to make this function usable for many architectures,
static bfd_boolean
mep_elf_relocate_section
- (bfd * output_bfd ATTRIBUTE_UNUSED,
+ (bfd * output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info * info,
- bfd * input_bfd,
- asection * input_section,
- bfd_byte * contents,
+ bfd * input_bfd,
+ asection * input_section,
+ bfd_byte * contents,
Elf_Internal_Rela * relocs,
- Elf_Internal_Sym * local_syms,
- asection ** local_sections)
+ Elf_Internal_Sym * local_syms,
+ asection ** local_sections)
{
- Elf_Internal_Shdr * symtab_hdr;
+ Elf_Internal_Shdr * symtab_hdr;
struct elf_link_hash_entry ** sym_hashes;
- Elf_Internal_Rela * rel;
- Elf_Internal_Rela * relend;
+ Elf_Internal_Rela * rel;
+ Elf_Internal_Rela * relend;
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
for (rel = relocs; rel < relend; rel ++)
{
- reloc_howto_type * howto;
- unsigned long r_symndx;
- Elf_Internal_Sym * sym;
- asection * sec;
+ 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;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+ const char * name = NULL;
+ int r_type;
r_type = ELF32_R_TYPE (rel->r_info);
-
r_symndx = ELF32_R_SYM (rel->r_info);
-
- /* Is this a complex relocation? */
- if (!info->relocatable && ELF32_R_TYPE (rel->r_info) == R_RELC)
- {
- bfd_elf_perform_complex_relocation (output_bfd, info,
- input_bfd, input_section, contents,
- rel, local_syms, local_sections);
- continue;
- }
-
howto = mep_elf_howto_table + ELF32_R_TYPE (rel->r_info);
h = NULL;
sym = NULL;
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;
-#if 0
- fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
- sec->name, name, sym->st_name,
- sec->output_section->vma, sec->output_offset,
- sym->st_value, rel->r_addend);
-#endif
+ name = name == NULL ? bfd_section_name (sec) : name;
}
else
{
- relocation = 0;
- h = sym_hashes [r_symndx];
+ bfd_boolean warned, unresolved_reloc, ignored;
- 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;
+ RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned, ignored);
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);
-#if 0
- fprintf (stderr,
- "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
- sec->name, name, h->root.u.def.value,
- sec->output_section->vma, sec->output_offset, relocation);
-#endif
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- {
-#if 0
- fprintf (stderr, "undefined: sec: %s, name: %s\n",
- sec->name, name);
-#endif
- }
- else if (!info->relocatable)
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset,
- (!info->shared && info->unresolved_syms_in_objects == RM_GENERATE_ERROR))))
- return FALSE;
-#if 0
- fprintf (stderr, "unknown: name: %s\n", name);
-#endif
- }
}
- if (sec != NULL && elf_discarded_section (sec))
- {
- /* For relocs against symbols from removed linkonce sections,
- or sections discarded by a linker script, we just want the
- section contents zeroed. Avoid any special processing. */
- _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
- rel->r_info = 0;
- rel->r_addend = 0;
- continue;
- }
+ if (sec != NULL && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
- if (info->relocatable)
- {
- /* This is a relocatable 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 (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- rel->r_addend += sec->output_offset;
- continue;
- }
+ if (bfd_link_relocatable (info))
+ continue;
- switch (r_type)
- {
- default:
- r = mep_final_link_relocate (howto, input_bfd, input_section,
- contents, rel, relocation);
- break;
- }
+ if (r_type == R_RELC)
+ r = bfd_elf_perform_complex_relocation (input_bfd, input_section,
+ contents, rel, relocation);
+ else
+ r = mep_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel, relocation);
if (r != bfd_reloc_ok)
{
switch (r)
{
case bfd_reloc_overflow:
- r = info->callbacks->reloc_overflow
+ (*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:
- r = info->callbacks->undefined_symbol
+ (*info->callbacks->undefined_symbol)
(info, name, input_bfd, input_section, rel->r_offset, TRUE);
break;
}
if (msg)
- r = info->callbacks->warning
- (info, msg, name, input_bfd, input_section, rel->r_offset);
-
- if (! r)
- return FALSE;
+ (*info->callbacks->warning) (info, msg, name, input_bfd,
+ input_section, rel->r_offset);
}
}
return TRUE;
}
-\f
-
-/* Update the got entry reference counts for the section being
- removed. */
-
-static bfd_boolean
-mep_elf_gc_sweep_hook
- (bfd * abfd ATTRIBUTE_UNUSED,
- struct bfd_link_info * info ATTRIBUTE_UNUSED,
- asection * sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED)
-{
- return TRUE;
-}
-
-/* Return the section that should be marked against GC for a given
- relocation. */
-
-static asection *
-mep_elf_gc_mark_hook
- (asection * sec,
- 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 (ELF32_R_TYPE (rel->r_info))
- {
- 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 (sec->owner)
- && 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 (sec->owner, sym->st_shndx);
- }
-
- return NULL;
-}
-
\f
/* Function to set the ELF flag bits. */
return TRUE;
}
-static bfd_boolean
-mep_elf_copy_private_bfd_data (bfd * ibfd, bfd * obfd)
-{
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return TRUE;
-
- elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
- elf_flags_init (obfd) = TRUE;
-
- /* Copy object attributes. */
- _bfd_elf_copy_obj_attributes (ibfd, obfd);
-
- return TRUE;
-}
-
/* Merge backend specific data from an object file to the output
object file when linking. */
static bfd_boolean
-mep_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
+mep_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
{
+ bfd *obfd = info->output_bfd;
static bfd *last_ibfd = 0;
flagword old_flags, new_flags;
flagword old_partial, new_partial;
- /* Check if we have the same endianess. */
- if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
+ /* Check if we have the same endianness. */
+ if (!_bfd_generic_verify_endian_match (ibfd, info))
return FALSE;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
#ifdef DEBUG
- _bfd_error_handler ("%B: old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s",
+ _bfd_error_handler ("%pB: old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s",
ibfd, old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no");
#endif
old_flags = (old_flags & ~EF_MEP_CPU_MASK) | new_partial;
else
{
- _bfd_error_handler (_("%B and %B are for different cores"), last_ibfd, ibfd);
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB and %pB are for different cores"),
+ last_ibfd, ibfd);
bfd_set_error (bfd_error_invalid_target);
return FALSE;
}
old_flags = (old_flags & ~EF_MEP_INDEX_MASK) | new_partial;
else
{
- _bfd_error_handler (_("%B and %B are for different configurations"), last_ibfd, ibfd);
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB and %pB are for different configurations"),
+ last_ibfd, ibfd);
bfd_set_error (bfd_error_invalid_target);
return FALSE;
}
{
"basic"
/* start-mepcfgtool */
- ,"simple"
- ,"fmax"
+ ,"default"
/* end-mepcfgtool */
};
_bfd_elf_print_private_bfd_data (abfd, ptr);
flags = elf_elfheader (abfd)->e_flags;
- fprintf (file, _("private flags = 0x%lx"), (long)flags);
+ fprintf (file, _("private flags = 0x%lx"), (unsigned long) flags);
partial_flags = (flags & EF_MEP_CPU_MASK) >> 24;
if (partial_flags < ARRAY_SIZE (core_names))
case EF_MEP_CPU_C2: return bfd_mach_mep;
case EF_MEP_CPU_C3: return bfd_mach_mep;
case EF_MEP_CPU_C4: return bfd_mach_mep;
+ case EF_MEP_CPU_C5: return bfd_mach_mep_c5;
case EF_MEP_CPU_H1: return bfd_mach_mep_h1;
}
static bfd_boolean
mep_elf_object_p (bfd * abfd)
{
- /* Irix 5 and 6 is broken. Object file symbol tables are not always
- sorted correctly such that local symbols preceed global symbols,
- and the sh_info field in the symbol table is not always right. */
- /* This is needed for the RELC support code. */
- elf_bad_symtab (abfd) = TRUE;
bfd_default_set_arch_mach (abfd, bfd_arch_mep, elf32_mep_machine (abfd));
return TRUE;
}
}
static bfd_boolean
-mep_elf_fake_sections (bfd * abfd ATTRIBUTE_UNUSED,
+mep_elf_fake_sections (bfd * abfd ATTRIBUTE_UNUSED,
Elf_Internal_Shdr * hdr,
- asection * sec)
+ asection * sec)
{
if (sec->flags & SEC_MEP_VLIW)
hdr->sh_flags |= SHF_MEP_VLIW;
#define ELF_MACHINE_CODE EM_CYGNUS_MEP
#define ELF_MAXPAGESIZE 0x1000
-#define TARGET_BIG_SYM bfd_elf32_mep_vec
+#define TARGET_BIG_SYM mep_elf32_vec
#define TARGET_BIG_NAME "elf32-mep"
-#define TARGET_LITTLE_SYM bfd_elf32_mep_little_vec
+#define TARGET_LITTLE_SYM mep_elf32_le_vec
#define TARGET_LITTLE_NAME "elf32-mep-little"
#define elf_info_to_howto_rel NULL
#define elf_info_to_howto mep_info_to_howto_rela
#define elf_backend_relocate_section mep_elf_relocate_section
-#define elf_backend_gc_mark_hook mep_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook mep_elf_gc_sweep_hook
-#define elf_backend_check_relocs mep_elf_check_relocs
-#define elf_backend_object_p mep_elf_object_p
+#define elf_backend_object_p mep_elf_object_p
#define elf_backend_section_flags mep_elf_section_flags
#define elf_backend_fake_sections mep_elf_fake_sections
-#define elf_backend_can_gc_sections 1
-
#define bfd_elf32_bfd_reloc_type_lookup mep_reloc_type_lookup
-#define bfd_elf32_bfd_reloc_name_lookup mep_reloc_name_lookup
+#define bfd_elf32_bfd_reloc_name_lookup mep_reloc_name_lookup
#define bfd_elf32_bfd_set_private_flags mep_elf_set_private_flags
-#define bfd_elf32_bfd_copy_private_bfd_data mep_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data mep_elf_merge_private_bfd_data
#define bfd_elf32_bfd_print_private_bfd_data mep_elf_print_private_bfd_data
-/* We use only the RELA entries. */
-#define USE_RELA
+#define elf_backend_rela_normal 1
#include "elf32-target.h"