/* ELF executable support for BFD.
- Copyright (C) 1993-2016 Free Software Foundation, Inc.
+ Copyright (C) 1993-2017 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
_bfd_error_handler
/* xgettext:c-format */
(_("%B: sh_link [%d] in section `%A' is incorrect"),
- s->owner, s, elfsec);
+ s->owner, elfsec, s);
result = FALSE;
}
/* There are some unknown sections in the group. */
_bfd_error_handler
/* xgettext:c-format */
- (_("%B: unknown [%d] section `%s' in group [%s]"),
+ (_("%B: unknown [%d] section `%s' in group [%A]"),
abfd,
(unsigned int) idx->shdr->sh_type,
bfd_elf_string_from_elf_section (abfd,
(elf_elfheader (abfd)
->e_shstrndx),
idx->shdr->sh_name),
- shdr->bfd_section->name);
+ shdr->bfd_section);
result = FALSE;
}
}
if (!bfd_malloc_and_get_section (abfd, newsect, &contents))
return FALSE;
- elf_parse_notes (abfd, (char *) contents, hdr->sh_size, -1);
+ elf_parse_notes (abfd, (char *) contents, hdr->sh_size, hdr->sh_offset);
free (contents);
}
Elf_Internal_Shdr ** oheaders = elf_elfsections (obfd);
unsigned int i;
- if (section_match (oheaders[hint], iheader))
+ BFD_ASSERT (iheader != NULL);
+
+ /* See PR 20922 for a reproducer of the NULL test. */
+ if (oheaders[hint] != NULL
+ && section_match (oheaders[hint], iheader))
return hint;
for (i = 1; i < elf_numsections (obfd); i++)
{
Elf_Internal_Shdr * oheader = oheaders[i];
+ if (oheader == NULL)
+ continue;
if (section_match (oheader, iheader))
/* FIXME: Do we care if there is a potential for
multiple matches ? */
in the input bfd. */
if (iheader->sh_link != SHN_UNDEF)
{
+ /* See PR 20931 for a reproducer. */
+ if (iheader->sh_link >= elf_numsections (ibfd))
+ {
+ (* _bfd_error_handler)
+ /* xgettext:c-format */
+ (_("%B: Invalid sh_link field (%d) in section number %d"),
+ ibfd, iheader->sh_link, secnum);
+ return FALSE;
+ }
+
sh_link = find_link (obfd, iheaders[iheader->sh_link], iheader->sh_link);
if (sh_link != SHN_UNDEF)
{
static const struct bfd_elf_special_section special_sections_f[] =
{
- { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
- { NULL, 0, 0, 0, 0 }
+ { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { STRING_COMMA_LEN (".fini_array"), -2, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { NULL, 0 , 0, 0, 0 }
};
static const struct bfd_elf_special_section special_sections_g[] =
static const struct bfd_elf_special_section special_sections_i[] =
{
- { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
- { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 },
- { NULL, 0, 0, 0, 0 }
+ { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { STRING_COMMA_LEN (".init_array"), -2, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 },
+ { NULL, 0, 0, 0, 0 }
};
static const struct bfd_elf_special_section special_sections_l[] =
static const struct bfd_elf_special_section special_sections_p[] =
{
- { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
- { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { NULL, 0, 0, 0, 0 }
+ { STRING_COMMA_LEN (".preinit_array"), -2, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { NULL, 0, 0, 0, 0 }
};
static const struct bfd_elf_special_section special_sections_r[] =
_bfd_error_handler
/* xgettext:c-format */
(_("%B: error: Alignment power %d of section `%A' is too big"),
- abfd, asect, asect->alignment_power);
+ abfd, asect->alignment_power, asect);
arg->failed = TRUE;
return;
}
}
}
- /* Let the backend count up any program headers it might need. */
bed = get_elf_backend_data (abfd);
- if (bed->elf_backend_additional_program_headers)
+
+ if ((abfd->flags & D_PAGED) != 0)
+ {
+ /* Add a PT_GNU_MBIND segment for each mbind section. */
+ unsigned int page_align_power = bfd_log2 (bed->commonpagesize);
+ for (s = abfd->sections; s != NULL; s = s->next)
+ if (elf_section_flags (s) & SHF_GNU_MBIND)
+ {
+ if (elf_section_data (s)->this_hdr.sh_info
+ > PT_GNU_MBIND_NUM)
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%B: GNU_MBIN section `%A' has invalid sh_info field: %d"),
+ abfd, s, elf_section_data (s)->this_hdr.sh_info);
+ continue;
+ }
+ /* Align mbind section to page size. */
+ if (s->alignment_power < page_align_power)
+ s->alignment_power = page_align_power;
+ segs ++;
+ }
+ }
+
+ /* Let the backend count up any program headers it might need. */
+ if (bed->elf_backend_additional_program_headers)
{
int a;
bfd_boolean writable;
int tls_count = 0;
asection *first_tls = NULL;
+ asection *first_mbind = NULL;
asection *dynsec, *eh_frame_hdr;
bfd_size_type amt;
bfd_vma addr_mask, wrap_to = 0;
first_tls = s;
tls_count++;
}
+ if (first_mbind == NULL
+ && (elf_section_flags (s) & SHF_GNU_MBIND) != 0)
+ first_mbind = s;
}
/* If there are any SHF_TLS output sections, add PT_TLS segment. */
pm = &m->next;
}
+ if (first_mbind && (abfd->flags & D_PAGED) != 0)
+ for (s = first_mbind; s != NULL; s = s->next)
+ if ((elf_section_flags (s) & SHF_GNU_MBIND) != 0
+ && (elf_section_data (s)->this_hdr.sh_info
+ <= PT_GNU_MBIND_NUM))
+ {
+ /* Mandated PF_R. */
+ unsigned long p_flags = PF_R;
+ if ((s->flags & SEC_READONLY) == 0)
+ p_flags |= PF_W;
+ if ((s->flags & SEC_CODE) != 0)
+ p_flags |= PF_X;
+
+ amt = sizeof (struct elf_segment_map) + sizeof (asection *);
+ m = bfd_zalloc (abfd, amt);
+ if (m == NULL)
+ goto error_return;
+ m->next = NULL;
+ m->p_type = (PT_GNU_MBIND_LO
+ + elf_section_data (s)->this_hdr.sh_info);
+ m->count = 1;
+ m->p_flags_valid = 1;
+ m->sections[0] = s;
+ m->p_flags = p_flags;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
/* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
segment. */
eh_frame_hdr = elf_eh_frame_hdr (abfd);
Elf_Internal_Phdr *p;
file_ptr off;
bfd_size_type maxpagesize;
+ unsigned int pt_load_count = 0;
unsigned int alloc;
unsigned int i, j;
bfd_vma header_pad = 0;
maxpagesize = m->p_align;
p->p_align = maxpagesize;
+ pt_load_count += 1;
}
else if (m->p_align_valid)
p->p_align = m->p_align;
}
off_adjust = vma_page_aligned_bias (p->p_vaddr, off, align);
+
+ /* Broken hardware and/or kernel require that files do not
+ map the same page with different permissions on some hppa
+ processors. */
+ if (pt_load_count > 1
+ && bed->no_page_alias
+ && (off & (maxpagesize - 1)) != 0
+ && (off & -maxpagesize) == ((off + off_adjust) & -maxpagesize))
+ off_adjust += maxpagesize;
off += off_adjust;
if (no_contents)
{
/* Special segments, such as the PT_PHDR segment, may contain
no sections, but ordinary, loadable segments should contain
something. They are allowed by the ELF spec however, so only
- a warning is produced. */
- if (segment->p_type == PT_LOAD)
+ a warning is produced.
+ There is however the valid use case of embedded systems which
+ have segments with p_filesz of 0 and a p_memsz > 0 to initialize
+ flash memory with zeros. No warning is shown for that case. */
+ if (segment->p_type == PT_LOAD
+ && (segment->p_filesz > 0 || segment->p_memsz == 0))
+ /* xgettext:c-format */
_bfd_error_handler (_("\
-%B: warning: Empty loadable segment detected, is this intentional ?"),
- ibfd);
+%B: warning: Empty loadable segment detected at vaddr=0x%.8x, is this intentional ?"),
+ ibfd, segment->p_vaddr);
map->count = 0;
*pointer_to_map = map;
elf_section_flags (osec) |= (elf_section_flags (isec)
& (SHF_MASKOS | SHF_MASKPROC));
+ /* Copy sh_info from input for mbind section. */
+ if (elf_section_flags (isec) & SHF_GNU_MBIND)
+ elf_section_data (osec)->this_hdr.sh_info
+ = elf_section_data (isec)->this_hdr.sh_info;
+
/* Set things up for objcopy and relocatable link. The output
SHT_GROUP section will have its elf_next_in_group pointing back
to the input group members. Ignore linker created group section.
default:
return TRUE;
+ case NT_GNU_PROPERTY_TYPE_0:
+ return _bfd_elf_parse_gnu_properties (abfd, note);
+
case NT_GNU_BUILD_ID:
return elfobj_grok_gnu_build_id (abfd, note);
}
projects / deliverable / binutils-gdb.git / blobdiff