/* ELF executable support for BFD.
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
return bfd_elf_make_generic_object (abfd);
}
-char *
+static char *
bfd_elf_get_str_section (bfd *abfd, unsigned int shindex)
{
Elf_Internal_Shdr **i_shdrp;
/* Allocate and clear an extra byte at the end, to prevent crashes
in case the string table is not terminated. */
if (shstrtabsize + 1 <= 1
- || (shstrtab = bfd_alloc (abfd, shstrtabsize + 1)) == NULL
+ || (shstrtab = (bfd_byte *) bfd_alloc (abfd, shstrtabsize + 1)) == NULL
|| bfd_seek (abfd, offset, SEEK_SET) != 0)
shstrtab = NULL;
else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize)
(shindex == shstrndx && strindex == hdr->sh_name
? ".shstrtab"
: bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name)));
- return "";
+ return NULL;
}
return ((char *) hdr->contents) + strindex;
pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx);
if (extshndx_buf == NULL)
{
- alloc_extshndx = bfd_malloc2 (symcount,
- sizeof (Elf_External_Sym_Shndx));
+ alloc_extshndx = (Elf_External_Sym_Shndx *)
+ bfd_malloc2 (symcount, sizeof (Elf_External_Sym_Shndx));
extshndx_buf = alloc_extshndx;
}
if (extshndx_buf == NULL
if (intsym_buf == NULL)
{
- alloc_intsym = bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym));
+ alloc_intsym = (Elf_Internal_Sym *)
+ bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym));
intsym_buf = alloc_intsym;
if (intsym_buf == NULL)
goto out;
/* Convert the symbols to internal form. */
isymend = intsym_buf + symcount;
- for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf;
+ for (esym = (const bfd_byte *) extsym_buf, isym = intsym_buf,
+ shndx = extshndx_buf;
isym < isymend;
esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL)
if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym))
bfd_size_type amt;
elf_tdata (abfd)->num_group = num_group;
- elf_tdata (abfd)->group_sect_ptr
- = bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *));
+ elf_tdata (abfd)->group_sect_ptr = (Elf_Internal_Shdr **)
+ bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *));
if (elf_tdata (abfd)->group_sect_ptr == NULL)
return FALSE;
/* Read the raw contents. */
BFD_ASSERT (sizeof (*dest) >= 4);
amt = shdr->sh_size * sizeof (*dest) / 4;
- shdr->contents = bfd_alloc2 (abfd, shdr->sh_size,
- sizeof (*dest) / 4);
+ shdr->contents = (unsigned char *)
+ bfd_alloc2 (abfd, shdr->sh_size, sizeof (*dest) / 4);
/* PR binutils/4110: Handle corrupt group headers. */
if (shdr->contents == NULL)
{
phdr = elf_tdata (abfd)->phdr;
for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
{
- /* This section is part of this segment if its file
- offset plus size lies within the segment's memory
- span and, if the section is loaded, the extent of the
- loaded data lies within the extent of the segment.
-
- Note - we used to check the p_paddr field as well, and
- refuse to set the LMA if it was 0. This is wrong
- though, as a perfectly valid initialised segment can
- have a p_paddr of zero. Some architectures, eg ARM,
- place special significance on the address 0 and
- executables need to be able to have a segment which
- covers this address. */
if (phdr->p_type == PT_LOAD
- && (bfd_vma) hdr->sh_offset >= phdr->p_offset
- && (hdr->sh_offset + hdr->sh_size
- <= phdr->p_offset + phdr->p_memsz)
- && ((flags & SEC_LOAD) == 0
- || (hdr->sh_offset + hdr->sh_size
- <= phdr->p_offset + phdr->p_filesz)))
+ && ELF_IS_SECTION_IN_SEGMENT (hdr, phdr))
{
if ((flags & SEC_LOAD) == 0)
newsect->lma = (phdr->p_paddr
return TRUE;
}
-/*
-INTERNAL_FUNCTION
- bfd_elf_find_section
-
-SYNOPSIS
- struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
-
-DESCRIPTION
- Helper functions for GDB to locate the string tables.
- Since BFD hides string tables from callers, GDB needs to use an
- internal hook to find them. Sun's .stabstr, in particular,
- isn't even pointed to by the .stab section, so ordinary
- mechanisms wouldn't work to find it, even if we had some.
-*/
-
-struct elf_internal_shdr *
-bfd_elf_find_section (bfd *abfd, char *name)
-{
- Elf_Internal_Shdr **i_shdrp;
- char *shstrtab;
- unsigned int max;
- unsigned int i;
-
- i_shdrp = elf_elfsections (abfd);
- if (i_shdrp != NULL)
- {
- shstrtab = bfd_elf_get_str_section (abfd,
- elf_elfheader (abfd)->e_shstrndx);
- if (shstrtab != NULL)
- {
- max = elf_numsections (abfd);
- for (i = 1; i < max; i++)
- if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name))
- return i_shdrp[i];
- }
- }
- return 0;
-}
-
const char *const bfd_elf_section_type_names[] = {
"SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
"SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
bfd_boolean
_bfd_elf_print_private_bfd_data (bfd *abfd, void *farg)
{
- FILE *f = farg;
+ FILE *f = (FILE *) farg;
Elf_Internal_Phdr *p;
asection *s;
bfd_byte *dynbuf = NULL;
asymbol *symbol,
bfd_print_symbol_type how)
{
- FILE *file = filep;
+ FILE *file = (FILE *) filep;
switch (how)
{
case bfd_print_symbol_name:
case SHT_DYNAMIC: /* Dynamic linking information. */
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
return FALSE;
- if (hdr->sh_link > elf_numsections (abfd)
- || elf_elfsections (abfd)[hdr->sh_link] == NULL)
+ if (hdr->sh_link > elf_numsections (abfd))
+ {
+ /* PR 10478: Accept Solaris binaries with a sh_link
+ field set to SHN_BEFORE or SHN_AFTER. */
+ switch (bfd_get_arch (abfd))
+ {
+ case bfd_arch_i386:
+ case bfd_arch_sparc:
+ if (hdr->sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */
+ || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */)
+ break;
+ /* Otherwise fall through. */
+ default:
+ return FALSE;
+ }
+ }
+ else if (elf_elfsections (abfd)[hdr->sh_link] == NULL)
return FALSE;
- if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
+ else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
{
Elf_Internal_Shdr *dynsymhdr;
if (hdr->sh_entsize != bed->s->sizeof_sym)
return FALSE;
+ if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
+ return FALSE;
BFD_ASSERT (elf_onesymtab (abfd) == 0);
elf_onesymtab (abfd) = shindex;
elf_tdata (abfd)->symtab_hdr = *hdr;
reject them, but, unfortunately, some people need to use
them. We scan through the section headers; if we find only
one suitable symbol table, we clobber the sh_link to point
- to it. I hope this doesn't break anything. */
- if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
+ to it. I hope this doesn't break anything.
+
+ Don't do it on executable nor shared library. */
+ if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0
+ && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
&& elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM)
{
unsigned int scan;
represent such a section, so at least for now, we don't
try. We just present it as a normal section. We also
can't use it as a reloc section if it points to the null
- section, an invalid section, or another reloc section. */
+ section, an invalid section, another reloc section, or its
+ sh_link points to the null section. */
if (hdr->sh_link != elf_onesymtab (abfd)
+ || hdr->sh_link == SHN_UNDEF
|| hdr->sh_info == SHN_UNDEF
|| hdr->sh_info >= num_sec
|| elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL
bfd_size_type amt;
BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL);
amt = sizeof (*hdr2);
- hdr2 = bfd_alloc (abfd, amt);
+ hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
if (hdr2 == NULL)
return FALSE;
elf_section_data (target_sect)->rel_hdr2 = hdr2;
return TRUE;
}
-/* Return the section for the local symbol specified by ABFD, R_SYMNDX.
- Return SEC for sections that have no elf section, and NULL on error. */
+/* Return the local symbol specified by ABFD, R_SYMNDX. */
-asection *
-bfd_section_from_r_symndx (bfd *abfd,
- struct sym_sec_cache *cache,
- asection *sec,
- unsigned long r_symndx)
+Elf_Internal_Sym *
+bfd_sym_from_r_symndx (struct sym_cache *cache,
+ bfd *abfd,
+ unsigned long r_symndx)
{
unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;
- asection *s;
if (cache->abfd != abfd || cache->indx[ent] != r_symndx)
{
Elf_Internal_Shdr *symtab_hdr;
unsigned char esym[sizeof (Elf64_External_Sym)];
Elf_External_Sym_Shndx eshndx;
- Elf_Internal_Sym isym;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx,
- &isym, esym, &eshndx) == NULL)
+ &cache->sym[ent], esym, &eshndx) == NULL)
return NULL;
if (cache->abfd != abfd)
cache->abfd = abfd;
}
cache->indx[ent] = r_symndx;
- cache->shndx[ent] = isym.st_shndx;
}
- s = bfd_section_from_elf_index (abfd, cache->shndx[ent]);
- if (s != NULL)
- return s;
-
- return sec;
+ return &cache->sym[ent];
}
/* Given an ELF section number, retrieve the corresponding BFD
sdata = (struct bfd_elf_section_data *) sec->used_by_bfd;
if (sdata == NULL)
{
- sdata = bfd_zalloc (abfd, sizeof (*sdata));
+ sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd,
+ sizeof (*sdata));
if (sdata == NULL)
return FALSE;
sec->used_by_bfd = sdata;
_bfd_elf_make_section_from_phdr (bfd *abfd,
Elf_Internal_Phdr *hdr,
int index,
- const char *typename)
+ const char *type_name)
{
asection *newsect;
char *name;
if (hdr->p_filesz > 0)
{
- sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : "");
+ sprintf (namebuf, "%s%d%s", type_name, index, split ? "a" : "");
len = strlen (namebuf) + 1;
- name = bfd_alloc (abfd, len);
+ name = (char *) bfd_alloc (abfd, len);
if (!name)
return FALSE;
memcpy (name, namebuf, len);
{
bfd_vma align;
- sprintf (namebuf, "%s%d%s", typename, index, split ? "b" : "");
+ sprintf (namebuf, "%s%d%s", type_name, index, split ? "b" : "");
len = strlen (namebuf) + 1;
- name = bfd_alloc (abfd, len);
+ name = (char *) bfd_alloc (abfd, len);
if (!name)
return FALSE;
memcpy (name, namebuf, len);
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
bfd_size_type amt = sizeof ".rela" + strlen (asect->name);
- name = bfd_alloc (abfd, amt);
+ name = (char *) bfd_alloc (abfd, amt);
if (name == NULL)
return FALSE;
sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
return TRUE;
}
+/* Return the default section type based on the passed in section flags. */
+
+int
+bfd_elf_get_default_section_type (flagword flags)
+{
+ if ((flags & SEC_ALLOC) != 0
+ && ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0
+ || (flags & SEC_NEVER_LOAD) != 0))
+ return SHT_NOBITS;
+ return SHT_PROGBITS;
+}
+
/* Set up an ELF internal section header for a section. */
static void
elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg)
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
- bfd_boolean *failedptr = failedptrarg;
+ bfd_boolean *failedptr = (bfd_boolean *) failedptrarg;
Elf_Internal_Shdr *this_hdr;
unsigned int sh_type;
asect->flags. */
if ((asect->flags & SEC_GROUP) != 0)
sh_type = SHT_GROUP;
- else if ((asect->flags & SEC_ALLOC) != 0
- && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
- || (asect->flags & SEC_NEVER_LOAD) != 0))
- sh_type = SHT_NOBITS;
else
- sh_type = SHT_PROGBITS;
+ sh_type = bfd_elf_get_default_section_type (asect->flags);
if (this_hdr->sh_type == SHT_NULL)
this_hdr->sh_type = sh_type;
void
bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg)
{
- bfd_boolean *failedptr = failedptrarg;
+ bfd_boolean *failedptr = (bfd_boolean *) failedptrarg;
asection *elt, *first;
unsigned char *loc;
bfd_boolean gas;
if (sec->contents == NULL)
{
gas = FALSE;
- sec->contents = bfd_alloc (abfd, sec->size);
+ sec->contents = (unsigned char *) bfd_alloc (abfd, sec->size);
/* Arrange for the section to be written out. */
elf_section_data (sec)->this_hdr.contents = sec->contents;
asection *s;
unsigned int idx;
- loc -= 4;
s = elt;
- if (!gas)
- s = s->output_section;
- idx = 0;
- if (s != NULL)
- idx = elf_section_data (s)->this_idx;
- H_PUT_32 (abfd, idx, loc);
+ if (! elf_discarded_section (s))
+ {
+ loc -= 4;
+ if (!gas)
+ s = s->output_section;
+ idx = 0;
+ if (s != NULL)
+ idx = elf_section_data (s)->this_idx;
+ H_PUT_32 (abfd, idx, loc);
+ }
elt = elf_next_in_group (elt);
if (elt == first)
break;
unsigned int section_number, secn;
Elf_Internal_Shdr **i_shdrp;
struct bfd_elf_section_data *d;
+ bfd_boolean need_symtab;
section_number = 1;
_bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name);
elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
- if (bfd_get_symcount (abfd) > 0)
+ need_symtab = (bfd_get_symcount (abfd) > 0
+ || (link_info == NULL
+ && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC))
+ == HAS_RELOC)));
+ if (need_symtab)
{
t->symtab_section = section_number++;
_bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name);
/* Set up the list of section header pointers, in agreement with the
indices. */
- i_shdrp = bfd_zalloc2 (abfd, section_number, sizeof (Elf_Internal_Shdr *));
+ i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc2 (abfd, section_number,
+ sizeof (Elf_Internal_Shdr *));
if (i_shdrp == NULL)
return FALSE;
- i_shdrp[0] = bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr));
+ i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd,
+ sizeof (Elf_Internal_Shdr));
if (i_shdrp[0] == NULL)
{
bfd_release (abfd, i_shdrp);
elf_elfsections (abfd) = i_shdrp;
i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
- if (bfd_get_symcount (abfd) > 0)
+ if (need_symtab)
{
i_shdrp[t->symtab_section] = &t->symtab_hdr;
if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF))
char *alc;
len = strlen (sec->name);
- alc = bfd_malloc (len - 2);
+ alc = (char *) bfd_malloc (len - 2);
if (alc == NULL)
return FALSE;
memcpy (alc, sec->name, len - 3);
if (bed->elf_backend_sym_is_global)
return (*bed->elf_backend_sym_is_global) (abfd, sym);
- return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
+ return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0
|| bfd_is_und_section (bfd_get_section (sym))
|| bfd_is_com_section (bfd_get_section (sym)));
}
}
max_index++;
- sect_syms = bfd_zalloc2 (abfd, max_index, sizeof (asymbol *));
+ sect_syms = (asymbol **) bfd_zalloc2 (abfd, max_index, sizeof (asymbol *));
if (sect_syms == NULL)
return FALSE;
elf_section_syms (abfd) = sect_syms;
}
/* Now sort the symbols so the local symbols are first. */
- new_syms = bfd_alloc2 (abfd, num_locals + num_globals, sizeof (asymbol *));
+ new_syms = (asymbol **) bfd_alloc2 (abfd, num_locals + num_globals,
+ sizeof (asymbol *));
if (new_syms == NULL)
return FALSE;
bfd_boolean failed;
struct bfd_strtab_hash *strtab = NULL;
Elf_Internal_Shdr *shstrtab_hdr;
+ bfd_boolean need_symtab;
if (abfd->output_has_begun)
return TRUE;
return FALSE;
/* The backend linker builds symbol table information itself. */
- if (link_info == NULL && bfd_get_symcount (abfd) > 0)
+ need_symtab = (link_info == NULL
+ && (bfd_get_symcount (abfd) > 0
+ || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC))
+ == HAS_RELOC)));
+ if (need_symtab)
{
/* Non-zero if doing a relocatable link. */
int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));
if (!assign_file_positions_except_relocs (abfd, link_info))
return FALSE;
- if (link_info == NULL && bfd_get_symcount (abfd) > 0)
+ if (need_symtab)
{
file_ptr off;
Elf_Internal_Shdr *hdr;
amt = sizeof (struct elf_segment_map);
amt += (to - from - 1) * sizeof (asection *);
- m = bfd_zalloc (abfd, amt);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
return NULL;
m->next = NULL;
{
struct elf_segment_map *m;
- m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
+ m = (struct elf_segment_map *) bfd_zalloc (abfd,
+ sizeof (struct elf_segment_map));
if (m == NULL)
return NULL;
m->next = NULL;
/* Select the allocated sections, and sort them. */
- sections = bfd_malloc2 (bfd_count_sections (abfd), sizeof (asection *));
+ sections = (asection **) bfd_malloc2 (bfd_count_sections (abfd),
+ sizeof (asection *));
if (sections == NULL)
goto error_return;
if (s != NULL && (s->flags & SEC_LOAD) != 0)
{
amt = sizeof (struct elf_segment_map);
- m = bfd_zalloc (abfd, amt);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
goto error_return;
m->next = NULL;
pm = &m->next;
amt = sizeof (struct elf_segment_map);
- m = bfd_zalloc (abfd, amt);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
goto error_return;
m->next = NULL;
break;
}
amt += (count - 1) * sizeof (asection *);
- m = bfd_zalloc (abfd, amt);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
goto error_return;
m->next = NULL;
amt = sizeof (struct elf_segment_map);
amt += (tls_count - 1) * sizeof (asection *);
- m = bfd_zalloc (abfd, amt);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
goto error_return;
m->next = NULL;
&& (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0)
{
amt = sizeof (struct elf_segment_map);
- m = bfd_zalloc (abfd, amt);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
goto error_return;
m->next = NULL;
if (elf_tdata (abfd)->stack_flags)
{
amt = sizeof (struct elf_segment_map);
- m = bfd_zalloc (abfd, amt);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
goto error_return;
m->next = NULL;
if (m != NULL)
{
amt = sizeof (struct elf_segment_map);
- m = bfd_zalloc (abfd, amt);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
goto error_return;
m->next = NULL;
putc ('\n',stderr);
}
+static bfd_boolean
+write_zeros (bfd *abfd, file_ptr pos, bfd_size_type len)
+{
+ void *buf;
+ bfd_boolean ret;
+
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0)
+ return FALSE;
+ buf = bfd_zmalloc (len);
+ if (buf == NULL)
+ return FALSE;
+ ret = bfd_bwrite (buf, len, abfd) == len;
+ free (buf);
+ return ret;
+}
+
/* Assign file positions to the sections based on the mapping from
sections to segments. This function also sets up some fields in
the file header. */
bfd_size_type maxpagesize;
unsigned int alloc;
unsigned int i, j;
+ bfd_vma header_pad = 0;
if (link_info == NULL
&& !_bfd_elf_map_sections_to_segments (abfd, link_info))
alloc = 0;
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
- ++alloc;
+ {
+ ++alloc;
+ if (m->header_size)
+ header_pad = m->header_size;
+ }
elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr;
elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr;
return TRUE;
}
- phdrs = bfd_alloc2 (abfd, alloc, sizeof (Elf_Internal_Phdr));
+ /* We're writing the size in elf_tdata (abfd)->program_header_size,
+ see assign_file_positions_except_relocs, so make sure we have
+ that amount allocated, with trailing space cleared.
+ The variable alloc contains the computed need, while elf_tdata
+ (abfd)->program_header_size contains the size used for the
+ layout.
+ See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments
+ where the layout is forced to according to a larger size in the
+ last iterations for the testcase ld-elf/header. */
+ BFD_ASSERT (elf_tdata (abfd)->program_header_size % bed->s->sizeof_phdr
+ == 0);
+ phdrs = (Elf_Internal_Phdr *)
+ bfd_zalloc2 (abfd,
+ (elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr),
+ sizeof (Elf_Internal_Phdr));
elf_tdata (abfd)->phdr = phdrs;
if (phdrs == NULL)
return FALSE;
off = bed->s->sizeof_ehdr;
off += alloc * bed->s->sizeof_phdr;
+ if (header_pad < (bfd_vma) off)
+ header_pad = 0;
+ else
+ header_pad -= off;
+ off += header_pad;
for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0;
m != NULL;
p->p_filesz += alloc * bed->s->sizeof_phdr;
p->p_memsz += alloc * bed->s->sizeof_phdr;
+ if (m->count)
+ {
+ p->p_filesz += header_pad;
+ p->p_memsz += header_pad;
+ }
}
if (p->p_type == PT_LOAD
if (this_hdr->sh_type != SHT_NOBITS)
{
+ if (p->p_filesz + adjust < p->p_memsz)
+ {
+ /* We have a PROGBITS section following NOBITS ones.
+ Allocate file space for the NOBITS section(s) and
+ zero it. */
+ adjust = p->p_memsz - p->p_filesz;
+ if (!write_zeros (abfd, off, adjust))
+ return FALSE;
+ }
off += adjust;
p->p_filesz += adjust;
}
p->p_align = 1;
p->p_flags = (lp->p_flags & ~PF_W);
}
- else if (link_info != NULL)
+ else
{
memset (p, 0, sizeof *p);
p->p_type = PT_NULL;
}
- else
- abort ();
}
else if (m->count != 0)
{
all of the sections we have selected. */
amt = sizeof (struct elf_segment_map);
amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
- map = bfd_zalloc (obfd, amt);
+ map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
if (map == NULL)
return FALSE;
pointers that we are interested in. As these sections get assigned
to a segment, they are removed from this array. */
- sections = bfd_malloc2 (section_count, sizeof (asection *));
+ sections = (asection **) bfd_malloc2 (section_count, sizeof (asection *));
if (sections == NULL)
return FALSE;
and carry on looping. */
amt = sizeof (struct elf_segment_map);
amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
- map = bfd_alloc (obfd, amt);
+ map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
if (map == NULL)
{
free (sections);
amt = sizeof (struct elf_segment_map);
if (section_count != 0)
amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
- map = bfd_zalloc (obfd, amt);
+ map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
if (map == NULL)
return FALSE;
map->p_align_valid = 1;
map->p_vaddr_offset = 0;
- if (map->p_type == PT_GNU_RELRO
- && segment->p_filesz == segment->p_memsz)
+ if (map->p_type == PT_GNU_RELRO)
{
/* The PT_GNU_RELRO segment may contain the first a few
bytes in the .got.plt section even if the whole .got.plt
section isn't in the PT_GNU_RELRO segment. We won't
change the size of the PT_GNU_RELRO segment. */
- map->p_size = segment->p_filesz;
+ map->p_size = segment->p_memsz;
map->p_size_valid = 1;
}
phdr_included = TRUE;
}
+ if (map->includes_filehdr && first_section)
+ /* We need to keep the space used by the headers fixed. */
+ map->header_size = first_section->vma - segment->p_vaddr;
+
if (!map->includes_phdrs
&& !map->includes_filehdr
&& map->p_paddr_valid)
symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
symstrtab_hdr->sh_type = SHT_STRTAB;
- outbound_syms = bfd_alloc2 (abfd, 1 + symcount, bed->s->sizeof_sym);
+ outbound_syms = (bfd_byte *) bfd_alloc2 (abfd, 1 + symcount,
+ bed->s->sizeof_sym);
if (outbound_syms == NULL)
{
_bfd_stringtab_free (stt);
if (symtab_shndx_hdr->sh_name != 0)
{
amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
- outbound_shndx = bfd_zalloc2 (abfd, 1 + symcount,
- sizeof (Elf_External_Sym_Shndx));
+ outbound_shndx = (bfd_byte *)
+ bfd_zalloc2 (abfd, 1 + symcount, sizeof (Elf_External_Sym_Shndx));
if (outbound_shndx == NULL)
{
_bfd_stringtab_free (stt);
if ((flags & BSF_THREAD_LOCAL) != 0)
type = STT_TLS;
+ else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0)
+ type = STT_GNU_IFUNC;
else if ((flags & BSF_FUNCTION) != 0)
type = STT_FUNC;
else if ((flags & BSF_OBJECT) != 0)
if (type == STT_OBJECT)
sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_COMMON);
else
-#else
- sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
#endif
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
}
else if (bfd_is_und_section (syms[idx]->section))
sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
if (flags & BSF_LOCAL)
bind = STB_LOCAL;
+ else if (flags & BSF_GNU_UNIQUE)
+ bind = STB_GNU_UNIQUE;
else if (flags & BSF_WEAK)
bind = STB_WEAK;
else if (flags & BSF_GLOBAL)
hdr = &elf_tdata (abfd)->dynverref_hdr;
- elf_tdata (abfd)->verref = bfd_zalloc2 (abfd, hdr->sh_info,
- sizeof (Elf_Internal_Verneed));
+ elf_tdata (abfd)->verref = (Elf_Internal_Verneed *)
+ bfd_zalloc2 (abfd, hdr->sh_info, sizeof (Elf_Internal_Verneed));
if (elf_tdata (abfd)->verref == NULL)
goto error_return;
elf_tdata (abfd)->cverrefs = hdr->sh_info;
- contents = bfd_malloc (hdr->sh_size);
+ contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
if (contents == NULL)
{
error_return_verref:
iverneed->vn_auxptr = NULL;
else
{
- iverneed->vn_auxptr = bfd_alloc2 (abfd, iverneed->vn_cnt,
- sizeof (Elf_Internal_Vernaux));
+ iverneed->vn_auxptr = (struct elf_internal_vernaux *)
+ bfd_alloc2 (abfd, iverneed->vn_cnt,
+ sizeof (Elf_Internal_Vernaux));
if (iverneed->vn_auxptr == NULL)
goto error_return_verref;
}
hdr = &elf_tdata (abfd)->dynverdef_hdr;
- contents = bfd_malloc (hdr->sh_size);
+ contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
if (contents == NULL)
goto error_return;
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
else
freeidx = ++maxidx;
}
- elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, maxidx,
- sizeof (Elf_Internal_Verdef));
+ elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *)
+ bfd_zalloc2 (abfd, maxidx, sizeof (Elf_Internal_Verdef));
if (elf_tdata (abfd)->verdef == NULL)
goto error_return;
iverdef->vd_auxptr = NULL;
else
{
- iverdef->vd_auxptr = bfd_alloc2 (abfd, iverdef->vd_cnt,
- sizeof (Elf_Internal_Verdaux));
+ iverdef->vd_auxptr = (struct elf_internal_verdaux *)
+ bfd_alloc2 (abfd, iverdef->vd_cnt,
+ sizeof (Elf_Internal_Verdaux));
if (iverdef->vd_auxptr == NULL)
goto error_return_verdef;
}
else
freeidx++;
- elf_tdata (abfd)->verdef = bfd_zalloc2 (abfd, freeidx,
- sizeof (Elf_Internal_Verdef));
+ elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *)
+ bfd_zalloc2 (abfd, freeidx, sizeof (Elf_Internal_Verdef));
if (elf_tdata (abfd)->verdef == NULL)
goto error_return;
if (iverdef->vd_nodename == NULL)
goto error_return_verdef;
iverdef->vd_nextdef = NULL;
- iverdef->vd_auxptr = bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux));
+ iverdef->vd_auxptr = (struct elf_internal_verdaux *)
+ bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux));
if (iverdef->vd_auxptr == NULL)
goto error_return_verdef;
elf_symbol_type *newsym;
bfd_size_type amt = sizeof (elf_symbol_type);
- newsym = bfd_zalloc (abfd, amt);
+ newsym = (elf_symbol_type *) bfd_zalloc (abfd, amt);
if (!newsym)
return NULL;
else
for error reporting. */
static bfd_boolean
-elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
+elf_find_function (bfd *abfd,
asection *section,
asymbol **symbols,
bfd_vma offset,
make a better choice of file name for local symbols by ignoring
file symbols appearing after a given local symbol. */
enum { nothing_seen, symbol_seen, file_after_symbol_seen } state;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
filename = NULL;
func = NULL;
for (p = symbols; *p != NULL; p++)
{
elf_symbol_type *q;
+ unsigned int type;
q = (elf_symbol_type *) *p;
- switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
+ type = ELF_ST_TYPE (q->internal_elf_sym.st_info);
+ switch (type)
{
- default:
- break;
case STT_FILE:
file = &q->symbol;
if (state == symbol_seen)
state = file_after_symbol_seen;
continue;
+ default:
+ if (!bed->is_function_type (type))
+ break;
case STT_NOTYPE:
- case STT_FUNC:
if (bfd_get_section (&q->symbol) == section
&& q->symbol.value >= low_func
&& q->symbol.value <= offset)
sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd));
len = strlen (buf) + 1;
- threaded_name = bfd_alloc (abfd, len);
+ threaded_name = (char *) bfd_alloc (abfd, len);
if (threaded_name == NULL)
return FALSE;
memcpy (threaded_name, buf, len);
_bfd_elfcore_strndup (bfd *abfd, char *start, size_t max)
{
char *dups;
- char *end = memchr (start, '\0', max);
+ char *end = (char *) memchr (start, '\0', max);
size_t len;
if (end == NULL)
else
len = end - start;
- dups = bfd_alloc (abfd, len + 1);
+ dups = (char *) bfd_alloc (abfd, len + 1);
if (dups == NULL)
return NULL;
sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8));
len = strlen (buf) + 1;
- name = bfd_alloc (abfd, len);
+ name = (char *) bfd_alloc (abfd, len);
if (name == NULL)
return FALSE;
sprintf (buf, ".module/%08lx", (unsigned long) base_addr);
len = strlen (buf) + 1;
- name = bfd_alloc (abfd, len);
+ name = (char *) bfd_alloc (abfd, len);
if (name == NULL)
return FALSE;
elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note)
{
elf_tdata (abfd)->build_id_size = note->descsz;
- elf_tdata (abfd)->build_id = bfd_alloc (abfd, note->descsz);
+ elf_tdata (abfd)->build_id = (bfd_byte *) bfd_alloc (abfd, note->descsz);
if (elf_tdata (abfd)->build_id == NULL)
return FALSE;
/* NOTREACHED */
}
+static bfd_boolean
+elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
+{
+ /* Signal number at offset 0x08. */
+ elf_tdata (abfd)->core_signal
+ = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
+
+ /* Process ID at offset 0x20. */
+ elf_tdata (abfd)->core_pid
+ = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20);
+
+ /* Command name at 0x48 (max 32 bytes, including nul). */
+ elf_tdata (abfd)->core_command
+ = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31);
+
+ return TRUE;
+}
+
+static bfd_boolean
+elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note)
+{
+ if (note->type == NT_OPENBSD_PROCINFO)
+ return elfcore_grok_openbsd_procinfo (abfd, note);
+
+ if (note->type == NT_OPENBSD_REGS)
+ return elfcore_make_note_pseudosection (abfd, ".reg", note);
+
+ if (note->type == NT_OPENBSD_FPREGS)
+ return elfcore_make_note_pseudosection (abfd, ".reg2", note);
+
+ if (note->type == NT_OPENBSD_XFPREGS)
+ return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
+
+ if (note->type == NT_OPENBSD_AUXV)
+ {
+ asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv",
+ SEC_HAS_CONTENTS);
+
+ if (sect == NULL)
+ return FALSE;
+ sect->size = note->descsz;
+ sect->filepos = note->descpos;
+ sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
+
+ return TRUE;
+ }
+
+ if (note->type == NT_OPENBSD_WCOOKIE)
+ {
+ asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie",
+ SEC_HAS_CONTENTS);
+
+ if (sect == NULL)
+ return FALSE;
+ sect->size = note->descsz;
+ sect->filepos = note->descpos;
+ sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
+
+ return TRUE;
+ }
+
+ return TRUE;
+}
+
static bfd_boolean
elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid)
{
/* Make a ".qnx_core_status/%d" section. */
sprintf (buf, ".qnx_core_status/%ld", *tid);
- name = bfd_alloc (abfd, strlen (buf) + 1);
+ name = (char *) bfd_alloc (abfd, strlen (buf) + 1);
if (name == NULL)
return FALSE;
strcpy (name, buf);
/* Make a "(base)/%d" section. */
sprintf (buf, "%s/%ld", base, tid);
- name = bfd_alloc (abfd, strlen (buf) + 1);
+ name = (char *) bfd_alloc (abfd, strlen (buf) + 1);
if (name == NULL)
return FALSE;
strcpy (name, buf);
/* Use note name as section name. */
len = note->namesz;
- name = bfd_alloc (abfd, len);
+ name = (char *) bfd_alloc (abfd, len);
if (name == NULL)
return FALSE;
memcpy (name, note->namedata, len);
newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4);
- buf = realloc (buf, *bufsiz + newspace);
+ buf = (char *) realloc (buf, *bufsiz + newspace);
if (buf == NULL)
return buf;
dest = buf + *bufsiz;
if (! elfcore_grok_netbsd_note (abfd, &in))
return FALSE;
}
+ else if (CONST_STRNEQ (in.namedata, "OpenBSD"))
+ {
+ if (! elfcore_grok_openbsd_note (abfd, &in))
+ return FALSE;
+ }
else if (CONST_STRNEQ (in.namedata, "QNX"))
{
if (! elfcore_grok_nto_note (abfd, &in))
if (bfd_seek (abfd, offset, SEEK_SET) != 0)
return FALSE;
- buf = bfd_malloc (size);
+ buf = (char *) bfd_malloc (size);
if (buf == NULL)
return FALSE;
size = count * sizeof (asymbol);
p = relplt->relocation;
for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel)
- size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
+ {
+ size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
+ if (p->addend != 0)
+ {
+#ifdef BFD64
+ size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64);
+#else
+ size += sizeof ("+0x") - 1 + 8;
+#endif
+ }
+ }
- s = *ret = bfd_malloc (size);
+ s = *ret = (asymbol *) bfd_malloc (size);
if (s == NULL)
return -1;
len = strlen ((*p->sym_ptr_ptr)->name);
memcpy (names, (*p->sym_ptr_ptr)->name, len);
names += len;
+ if (p->addend != 0)
+ {
+ char buf[30], *a;
+ int len;
+ memcpy (names, "+0x", sizeof ("+0x") - 1);
+ names += sizeof ("+0x") - 1;
+ bfd_sprintf_vma (abfd, buf, p->addend);
+ for (a = buf; *a == '0'; ++a)
+ ;
+ len = strlen (a);
+ memcpy (names, a, len);
+ names += len;
+ }
memcpy (names, "@plt", sizeof ("@plt"));
names += sizeof ("@plt");
++s, ++n;
i_ehdrp = elf_elfheader (abfd);
i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
+
+ /* To make things simpler for the loader on Linux systems we set the
+ osabi field to ELFOSABI_LINUX if the binary contains symbols of
+ the STT_GNU_IFUNC type. */
+ if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE
+ && elf_tdata (abfd)->has_ifunc_symbols)
+ i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
}
/* Return TRUE for ELF symbol types that represent functions.
This is the default version of this function, which is sufficient for
- most targets. It returns true if TYPE is STT_FUNC. */
+ most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */
bfd_boolean
_bfd_elf_is_function_type (unsigned int type)
{
- return (type == STT_FUNC);
+ return (type == STT_FUNC
+ || type == STT_GNU_IFUNC);
}
projects / deliverable / binutils-gdb.git / blobdiff