/* i370-specific support for 32-bit ELF
- Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
Hacked by Linas Vepstas for i370 linas@linas.org
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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.
+ 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. */
+ 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. */
/* This file is based on a preliminary PowerPC ELF ABI.
But its been hacked on for the IBM 360/370 architectures.
Basically, the 31bit relocation works, and just about everything
else is a wild card. In particular, don't expect shared libs or
- dynamic loading to work ... its never been tested ...
-*/
+ dynamic loading to work ... its never been tested. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 31-bit PC relative */
+ /* 31-bit PC relative. */
HOWTO (R_I370_REL31, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0x7fffffff, /* dst_mask */
TRUE), /* pcrel_offset */
- /* 32-bit PC relative */
+ /* 32-bit PC relative. */
HOWTO (R_I370_REL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xfff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 12-bit PC relative */
+ /* 12-bit PC relative. */
HOWTO (R_I370_REL12, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 8-bit PC relative */
+ /* 8-bit PC relative. */
HOWTO (R_I370_REL8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
};
\f
-static void i370_elf_howto_init
- PARAMS ((void));
-static reloc_howto_type *i370_elf_reloc_type_lookup
- PARAMS ((bfd *, bfd_reloc_code_real_type));
-static void i370_elf_info_to_howto
- PARAMS ((bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst));
-static bfd_boolean i370_elf_set_private_flags
- PARAMS ((bfd *, flagword));
-\f
/* Initialize the i370_elf_howto_table, so that linear accesses can be done. */
static void
-i370_elf_howto_init ()
+i370_elf_howto_init (void)
{
unsigned int i, type;
i370_elf_howto_table[type] = &i370_elf_howto_raw[i];
}
}
-\f
+
static reloc_howto_type *
-i370_elf_reloc_type_lookup (abfd, code)
- bfd *abfd ATTRIBUTE_UNUSED;
- bfd_reloc_code_real_type code;
+i370_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
{
enum i370_reloc_type i370_reloc = R_I370_NONE;
- if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */
+ if (!i370_elf_howto_table[ R_I370_ADDR31 ])
+ /* Initialize howto table if needed. */
i370_elf_howto_init ();
- switch ((int)code)
+ switch ((int) code)
{
default:
- return (reloc_howto_type *)NULL;
+ return NULL;
case BFD_RELOC_NONE: i370_reloc = R_I370_NONE; break;
case BFD_RELOC_32: i370_reloc = R_I370_ADDR31; break;
return i370_elf_howto_table[ (int)i370_reloc ];
};
-static bfd_boolean i370_elf_merge_private_bfd_data
- PARAMS ((bfd *, bfd *));
-static bfd_boolean i370_elf_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
- asection **));
-static void i370_elf_post_process_headers
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean i370_elf_create_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean i370_elf_section_from_shdr
- PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
-static bfd_boolean i370_elf_fake_sections
- PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
-#if 0
-static elf_linker_section_t *i370_elf_create_linker_section
- PARAMS ((bfd *abfd, struct bfd_link_info *info,
- enum elf_linker_section_enum));
-#endif
-static bfd_boolean i370_elf_check_relocs
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static bfd_boolean i370_elf_adjust_dynamic_symbol
- PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static bfd_boolean i370_elf_adjust_dynindx
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static bfd_boolean i370_elf_size_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean i370_elf_finish_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
+static reloc_howto_type *
+i370_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]);
+ i++)
+ if (i370_elf_howto_raw[i].name != NULL
+ && strcasecmp (i370_elf_howto_raw[i].name, r_name) == 0)
+ return &i370_elf_howto_raw[i];
+
+ return NULL;
+}
/* The name of the dynamic interpreter. This is put in the .interp
section. */
/* Set the howto pointer for an i370 ELF reloc. */
static void
-i370_elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *cache_ptr;
- Elf_Internal_Rela *dst;
+i370_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
{
- if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table */
+ if (!i370_elf_howto_table[ R_I370_ADDR31 ])
+ /* Initialize howto table. */
i370_elf_howto_init ();
BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_I370_max);
cache_ptr->howto = i370_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
}
-/* hack alert -- the following several routines look generic to me ...
- * why are we bothering with them ???
- */
+/* Hack alert -- the following several routines look generic to me ...
+ why are we bothering with them ? */
/* Function to set whether a module needs the -mrelocatable bit set. */
+
static bfd_boolean
-i370_elf_set_private_flags (abfd, flags)
- bfd *abfd;
- flagword flags;
+i370_elf_set_private_flags (bfd *abfd, flagword flags)
{
BFD_ASSERT (!elf_flags_init (abfd)
|| elf_elfheader (abfd)->e_flags == flags);
}
/* Merge backend specific data from an object file to the output
- object file when linking */
+ object file when linking. */
+
static bfd_boolean
-i370_elf_merge_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
+i370_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
{
flagword old_flags;
flagword new_flags;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
- if (!elf_flags_init (obfd)) /* First call, no flags set */
+ if (!elf_flags_init (obfd)) /* First call, no flags set. */
{
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
}
- else if (new_flags == old_flags) /* Compatible flags are ok */
+ else if (new_flags == old_flags) /* Compatible flags are ok. */
;
- else /* Incompatible flags */
+ else /* Incompatible flags. */
{
(*_bfd_error_handler)
- ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
- bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
+ ("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
+ ibfd, (long) new_flags, (long) old_flags);
bfd_set_error (bfd_error_bad_value);
return FALSE;
/* Handle an i370 specific section when reading an object file. This
is called when elfcode.h finds a section with an unknown type. */
/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
+ certainly does the wrong thing. Its here simply because it does
+ just enough to allow glibc-2.1 ld.so to compile & link. */
static bfd_boolean
-i370_elf_section_from_shdr (abfd, hdr, name)
- bfd *abfd;
- Elf_Internal_Shdr *hdr;
- const char *name;
+i370_elf_section_from_shdr (bfd *abfd,
+ Elf_Internal_Shdr *hdr,
+ const char *name,
+ int shindex)
{
asection *newsect;
flagword flags;
- if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
return FALSE;
newsect = hdr->bfd_section;
\f
/* Set up any other section flags and such that may be necessary. */
/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
+ certainly does the wrong thing. Its here simply because it does
+ just enough to allow glibc-2.1 ld.so to compile & link. */
static bfd_boolean
-i370_elf_fake_sections (abfd, shdr, asect)
- bfd *abfd ATTRIBUTE_UNUSED;
- Elf_Internal_Shdr *shdr;
- asection *asect;
+i370_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
+ Elf_Internal_Shdr *shdr,
+ asection *asect)
{
- if ((asect->flags & SEC_EXCLUDE) != 0)
+ if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
shdr->sh_flags |= SHF_EXCLUDE;
if ((asect->flags & SEC_SORT_ENTRIES) != 0)
return TRUE;
}
\f
-#if 0
-/* Create a special linker section */
-/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
-
-static elf_linker_section_t *
-i370_elf_create_linker_section (abfd, info, which)
- bfd *abfd;
- struct bfd_link_info *info;
- enum elf_linker_section_enum which;
-{
- bfd *dynobj = elf_hash_table (info)->dynobj;
- elf_linker_section_t *lsect;
-
- /* Record the first bfd section that needs the special section */
- if (!dynobj)
- dynobj = elf_hash_table (info)->dynobj = abfd;
-
- /* If this is the first time, create the section */
- lsect = elf_linker_section (dynobj, which);
- if (!lsect)
- {
- elf_linker_section_t defaults;
- static elf_linker_section_t zero_section;
-
- defaults = zero_section;
- defaults.which = which;
- defaults.hole_written_p = FALSE;
- defaults.alignment = 2;
-
- /* Both of these sections are (technically) created by the user
- putting data in them, so they shouldn't be marked
- SEC_LINKER_CREATED.
-
- The linker creates them so it has somewhere to attach their
- respective symbols. In fact, if they were empty it would
- be OK to leave the symbol set to 0 (or any random number), because
- the appropriate register should never be used. */
- defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY);
-
- switch (which)
- {
- default:
- (*_bfd_error_handler) ("%s: Unknown special linker type %d",
- bfd_archive_filename (abfd),
- (int) which);
-
- bfd_set_error (bfd_error_bad_value);
- return (elf_linker_section_t *)0;
-
- case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
- defaults.name = ".sdata";
- defaults.rel_name = ".rela.sdata";
- defaults.bss_name = ".sbss";
- defaults.sym_name = "_SDA_BASE_";
- defaults.sym_offset = 32768;
- break;
-
- case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
- defaults.name = ".sdata2";
- defaults.rel_name = ".rela.sdata2";
- defaults.bss_name = ".sbss2";
- defaults.sym_name = "_SDA2_BASE_";
- defaults.sym_offset = 32768;
- defaults.flags |= SEC_READONLY;
- break;
- }
-
- lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults);
- }
-
- return lsect;
-}
-#endif
-\f
/* We have to create .dynsbss and .rela.sbss here so that they get mapped
to output sections (just like _bfd_elf_create_dynamic_sections has
to create .dynbss and .rela.bss). */
/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
+ certainly does the wrong thing. Its here simply because it does
+ just enough to allow glibc-2.1 ld.so to compile & link. */
static bfd_boolean
-i370_elf_create_dynamic_sections (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+i370_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
{
- register asection *s;
+ asection *s;
flagword flags;
if (!_bfd_elf_create_dynamic_sections(abfd, info))
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
| SEC_LINKER_CREATED);
- s = bfd_make_section (abfd, ".dynsbss");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
+ s = bfd_make_section_with_flags (abfd, ".dynsbss",
+ SEC_ALLOC | SEC_LINKER_CREATED);
+ if (s == NULL)
return FALSE;
if (! info->shared)
{
- s = bfd_make_section (abfd, ".rela.sbss");
+ s = bfd_make_section_with_flags (abfd, ".rela.sbss",
+ flags | SEC_READONLY);
if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
|| ! bfd_set_section_alignment (abfd, s, 2))
return FALSE;
}
- /* xxx beats me, seem to need a rela.text ... */
- s = bfd_make_section (abfd, ".rela.text");
+ /* XXX beats me, seem to need a rela.text ... */
+ s = bfd_make_section_with_flags (abfd, ".rela.text",
+ flags | SEC_READONLY);
if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
|| ! bfd_set_section_alignment (abfd, s, 2))
return FALSE;
return TRUE;
change the definition to something the rest of the link can
understand. */
/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
+ certainly does the wrong thing. Its here simply because it does
+ just enough to allow glibc-2.1 ld.so to compile & link. */
static bfd_boolean
-i370_elf_adjust_dynamic_symbol (info, h)
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
+i370_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
{
bfd *dynobj = elf_hash_table (info)->dynobj;
asection *s;
/* Make sure we know what is going on here. */
BFD_ASSERT (dynobj != NULL
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
- || h->weakdef != NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)));
+ && (h->needs_plt
+ || h->u.weakdef != NULL
+ || (h->def_dynamic
+ && h->ref_regular
+ && !h->def_regular)));
s = bfd_get_section_by_name (dynobj, ".rela.text");
BFD_ASSERT (s != NULL);
- s->_raw_size += sizeof (Elf32_External_Rela);
+ s->size += sizeof (Elf32_External_Rela);
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
- if (h->weakdef != NULL)
+ if (h->u.weakdef != NULL)
{
- BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
- || h->weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->weakdef->root.u.def.section;
- h->root.u.def.value = h->weakdef->root.u.def.value;
+ BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
+ || h->u.weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->u.weakdef->root.u.def.section;
+ h->root.u.def.value = h->u.weakdef->root.u.def.value;
return TRUE;
}
if (info->shared)
return TRUE;
+ if (h->size == 0)
+ {
+ (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
+ h->root.root.string);
+ return TRUE;
+ }
+
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
else
srel = bfd_get_section_by_name (dynobj, ".rela.bss");
BFD_ASSERT (srel != NULL);
- srel->_raw_size += sizeof (Elf32_External_Rela);
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
+ srel->size += sizeof (Elf32_External_Rela);
+ h->needs_copy = 1;
}
/* We need to figure out the alignment required for this symbol. I
power_of_two = 4;
/* Apply the required alignment. */
- s->_raw_size = BFD_ALIGN (s->_raw_size,
- (bfd_size_type) (1 << power_of_two));
+ s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
if (power_of_two > bfd_get_section_alignment (dynobj, s))
{
if (! bfd_set_section_alignment (dynobj, s, power_of_two))
/* Define the symbol as being at this point in the section. */
h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
+ h->root.u.def.value = s->size;
/* Increment the section size to make room for the symbol. */
- s->_raw_size += h->size;
+ s->size += h->size;
return TRUE;
}
/* Increment the index of a dynamic symbol by a given amount. Called
via elf_link_hash_traverse. */
/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
+ certainly does the wrong thing. Its here simply because it does
+ just enough to allow glibc-2.1 ld.so to compile & link. */
static bfd_boolean
-i370_elf_adjust_dynindx (h, cparg)
- struct elf_link_hash_entry *h;
- PTR cparg;
+i370_elf_adjust_dynindx (struct elf_link_hash_entry *h, void * cparg)
{
int *cp = (int *) cparg;
#ifdef DEBUG
fprintf (stderr,
- "i370_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n",
+ "i370_elf_adjust_dynindx called, h->dynindx = %ld, *cp = %d\n",
h->dynindx, *cp);
#endif
\f
/* Set the sizes of the dynamic sections. */
/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
+ certainly does the wrong thing. Its here simply because it does
+ just enough to allow glibc-2.1 ld.so to compile & link. */
static bfd_boolean
-i370_elf_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+i370_elf_size_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
bfd *dynobj;
asection *s;
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
+ if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (s != NULL);
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
}
}
stripped from the output file below. */
static char *rela_sections[] = { ".rela.got", ".rela.sdata",
".rela.sdata2", ".rela.sbss",
- (char *)0 };
+ NULL };
char **p;
- for (p = rela_sections; *p != (char *)0; p++)
+ for (p = rela_sections; *p != NULL; p++)
{
s = bfd_get_section_by_name (dynobj, *p);
if (s != NULL)
- s->_raw_size = 0;
+ s->size = 0;
}
}
for (s = dynobj->sections; s != NULL; s = s->next)
{
const char *name;
- bfd_boolean strip;
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
/* It's OK to base decisions on the section name, because none
of the dynobj section names depend upon the input files. */
name = bfd_get_section_name (dynobj, s);
- strip = FALSE;
if (strcmp (name, ".plt") == 0)
{
- if (s->_raw_size == 0)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- strip = TRUE;
- }
- else
- {
- /* Remember whether there is a PLT. */
- plt = TRUE;
- }
+ /* Remember whether there is a PLT. */
+ plt = s->size != 0;
}
- else if (strncmp (name, ".rela", 5) == 0)
+ else if (CONST_STRNEQ (name, ".rela"))
{
- if (s->_raw_size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rela.bss and
- .rela.plt. We must create both sections in
- create_dynamic_sections, because they must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- strip = TRUE;
- }
- else
+ if (s->size != 0)
{
asection *target;
const char *outname;
}
else if (strcmp (name, ".got") != 0
&& strcmp (name, ".sdata") != 0
- && strcmp (name, ".sdata2") != 0)
+ && strcmp (name, ".sdata2") != 0
+ && strcmp (name, ".dynbss") != 0
+ && strcmp (name, ".dynsbss") != 0)
{
/* It's not one of our sections, so don't allocate space. */
continue;
}
- if (strip)
+ if (s->size == 0)
{
- asection **spp;
-
- for (spp = &s->output_section->owner->sections;
- *spp != NULL;
- spp = &(*spp)->next)
- {
- if (*spp == s->output_section)
- {
- bfd_section_list_remove (s->output_section->owner, spp);
- --s->output_section->owner->section_count;
- break;
- }
- }
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rela.bss and
+ .rela.plt. We must create both sections in
+ create_dynamic_sections, because they must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+ s->flags |= SEC_EXCLUDE;
continue;
}
+
+ if ((s->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
+
/* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
- if (s->contents == NULL && s->_raw_size != 0)
+ s->contents = bfd_zalloc (dynobj, s->size);
+ if (s->contents == NULL)
return FALSE;
}
the .dynamic section. The DT_DEBUG entry is filled in by the
dynamic linker and used by the debugger. */
#define add_dynamic_entry(TAG, VAL) \
- bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
if (!info->shared)
{
FIXME: We assume that there will never be relocations to
locations in linker-created sections that do not have
externally-visible names. Instead, we should work out precisely
- which sections relocations are targetted at. */
+ which sections relocations are targeted at. */
if (info->shared)
{
int c;
}
elf_link_hash_traverse (elf_hash_table (info),
- i370_elf_adjust_dynindx,
- (PTR) &c);
+ i370_elf_adjust_dynindx, & c);
elf_hash_table (info)->dynsymcount += c;
}
allocate space in the global offset table or procedure linkage
table. */
/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
+ certainly does the wrong thing. Its here simply because it does
+ just enough to allow glibc-2.1 ld.so to compile & link. */
static bfd_boolean
-i370_elf_check_relocs (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+i370_elf_check_relocs (bfd *abfd,
+ struct bfd_link_info *info,
+ asection *sec,
+ const Elf_Internal_Rela *relocs)
{
bfd *dynobj;
Elf_Internal_Shdr *symtab_hdr;
return TRUE;
#ifdef DEBUG
- fprintf (stderr, "i370_elf_check_relocs called for section %s in %s\n",
- bfd_get_section_name (abfd, sec),
- bfd_archive_filename (abfd));
+ _bfd_error_handler ("i370_elf_check_relocs called for section %A in %B",
+ sec, abfd);
#endif
dynobj = elf_hash_table (info)->dynobj;
if (r_symndx < symtab_hdr->sh_info)
h = NULL;
else
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ {
+ 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;
+ }
if (info->shared)
{
if (name == NULL)
return FALSE;
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
+ BFD_ASSERT (CONST_STRNEQ (name, ".rela")
&& strcmp (bfd_get_section_name (abfd, sec), name + 5) == 0);
sreloc = bfd_get_section_by_name (dynobj, name);
{
flagword flags;
- sreloc = bfd_make_section (dynobj, name);
flags = (SEC_HAS_CONTENTS | SEC_READONLY
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
if ((sec->flags & SEC_ALLOC) != 0)
flags |= SEC_ALLOC | SEC_LOAD;
+ sreloc = bfd_make_section_with_flags (dynobj, name,
+ flags);
if (sreloc == NULL
- || ! bfd_set_section_flags (dynobj, sreloc, flags)
|| ! bfd_set_section_alignment (dynobj, sreloc, 2))
return FALSE;
}
}
- sreloc->_raw_size += sizeof (Elf32_External_Rela);
+ sreloc->size += sizeof (Elf32_External_Rela);
/* FIXME: We should here do what the m68k and i386
backends do: if the reloc is pc-relative, record it
\f
/* Finish up the dynamic sections. */
/* XXX hack alert bogus This routine is mostly all junk and almost
- * certainly does the wrong thing. Its here simply because it does
- * just enough to allow glibc-2.1 ld.so to compile & link.
- */
+ certainly does the wrong thing. Its here simply because it does
+ just enough to allow glibc-2.1 ld.so to compile & link. */
static bfd_boolean
-i370_elf_finish_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+i370_elf_finish_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
asection *sdyn;
bfd *dynobj = elf_hash_table (info)->dynobj;
BFD_ASSERT (splt != NULL && sdyn != NULL);
dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
if (! size)
dyn.d_un.d_ptr = s->vma;
else
- {
- if (s->_cooked_size != 0)
- dyn.d_un.d_val = s->_cooked_size;
- else
- dyn.d_un.d_val = s->_raw_size;
- }
+ dyn.d_un.d_val = s->size;
}
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
}
}
}
- /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
- easily find the address of the _GLOBAL_OFFSET_TABLE_. */
-/* XXX this is clearly very wrong for the 370 arch */
- if (sgot)
+ if (sgot && sgot->size != 0)
{
unsigned char *contents = sgot->contents;
- bfd_put_32 (output_bfd, (bfd_vma) 0x4e800021 /* blrl */, contents);
if (sdyn == NULL)
- bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, contents);
else
bfd_put_32 (output_bfd,
sdyn->output_section->vma + sdyn->output_offset,
- contents+4);
+ contents);
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
}
sym.st_shndx = indx;
esym = (Elf32_External_Sym *) sdynsym->contents + dindx;
- bfd_elf32_swap_symbol_out (output_bfd, &sym, (PTR) esym, (PTR) 0);
+ bfd_elf32_swap_symbol_out (output_bfd, &sym, esym, NULL);
}
}
/* Set the sh_info field of the output .dynsym section to the
- index of the first global symbol. */
+ index of the first global symbol. */
elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
maxdindx + 1;
}
accordingly. */
static bfd_boolean
-i370_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Sym *local_syms;
- asection **local_sections;
+i370_elf_relocate_section (bfd *output_bfd,
+ struct bfd_link_info *info,
+ bfd *input_bfd,
+ asection *input_section,
+ bfd_byte *contents,
+ Elf_Internal_Rela *relocs,
+ Elf_Internal_Sym *local_syms,
+ asection **local_sections)
{
Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
bfd_vma *local_got_offsets;
bfd_boolean ret = TRUE;
- if (info->relocatable)
- return TRUE;
-
#ifdef DEBUG
- fprintf (stderr, "i370_elf_relocate_section called for %s section %s, %ld relocations%s\n",
- bfd_archive_filename (input_bfd),
- bfd_section_name(input_bfd, input_section),
- (long) input_section->reloc_count,
- (info->relocatable) ? " (relocatable)" : "");
+ _bfd_error_handler ("i370_elf_relocate_section called for %B section %A, %ld relocations%s",
+ input_bfd, input_section,
+ (long) input_section->reloc_count,
+ (info->relocatable) ? " (relocatable)" : "");
#endif
- if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */
+ if (!i370_elf_howto_table[ R_I370_ADDR31 ])
+ /* Initialize howto table if needed. */
i370_elf_howto_init ();
local_got_offsets = elf_local_got_offsets (input_bfd);
for (; rel < relend; rel++)
{
- enum i370_reloc_type r_type = (enum i370_reloc_type)ELF32_R_TYPE (rel->r_info);
- bfd_vma offset = rel->r_offset;
- bfd_vma addend = rel->r_addend;
- bfd_reloc_status_type r = bfd_reloc_other;
- Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0;
- asection *sec = (asection *)0;
- struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0;
- const char *sym_name = (const char *)0;
+ enum i370_reloc_type r_type = (enum i370_reloc_type) ELF32_R_TYPE (rel->r_info);
+ bfd_vma offset = rel->r_offset;
+ bfd_vma addend = rel->r_addend;
+ bfd_reloc_status_type r = bfd_reloc_other;
+ Elf_Internal_Sym *sym = NULL;
+ asection *sec = NULL;
+ struct elf_link_hash_entry * h = NULL;
+ const char *sym_name = NULL;
reloc_howto_type *howto;
unsigned long r_symndx;
bfd_vma relocation;
- /* Unknown relocation handling */
- if ((unsigned)r_type >= (unsigned)R_I370_max
+ /* Unknown relocation handling. */
+ if ((unsigned) r_type >= (unsigned) R_I370_max
|| !i370_elf_howto_table[(int)r_type])
{
- (*_bfd_error_handler) ("%s: unknown relocation type %d",
- bfd_archive_filename (input_bfd),
+ (*_bfd_error_handler) ("%B: unknown relocation type %d",
+ input_bfd,
(int) r_type);
bfd_set_error (bfd_error_bad_value);
continue;
}
- howto = i370_elf_howto_table[(int)r_type];
+ howto = i370_elf_howto_table[(int) r_type];
r_symndx = ELF32_R_SYM (rel->r_info);
+ relocation = 0;
if (r_symndx < symtab_hdr->sh_info)
{
sec = local_sections[r_symndx];
sym_name = "<local symbol>";
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, & sec, rel);
addend = rel->r_addend;
}
else
sec = h->root.u.def.section;
if (info->shared
&& ((! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ || !h->def_regular)
&& (input_section->flags & SEC_ALLOC) != 0
&& (r_type == R_I370_ADDR31
|| r_type == R_I370_COPY
|| r_type == R_I370_ADDR16
|| r_type == R_I370_RELATIVE))
- {
- /* In these cases, we don't need the relocation
- value. We check specially because in some
- obscure cases sec->output_section will be NULL. */
- relocation = 0;
- }
+ /* In these cases, we don't need the relocation
+ value. We check specially because in some
+ obscure cases sec->output_section will be NULL. */
+ ;
else
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
+ ;
+ else if (info->unresolved_syms_in_objects == RM_IGNORE
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- relocation = 0;
- else
+ ;
+ else if (!info->relocatable)
{
- (*info->callbacks->undefined_symbol) (info,
- h->root.root.string,
- input_bfd,
- input_section,
- rel->r_offset,
- TRUE);
- ret = FALSE;
- continue;
+ if ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd,
+ input_section, rel->r_offset,
+ (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
+ || ELF_ST_VISIBILITY (h->other))))
+ {
+ ret = FALSE;
+ continue;
+ }
}
}
+ 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 (info->relocatable)
+ continue;
+
switch ((int) r_type)
{
default:
(*_bfd_error_handler)
- ("%s: unknown relocation type %d for symbol %s",
- bfd_archive_filename (input_bfd),
- (int) r_type, sym_name);
+ ("%B: unknown relocation type %d for symbol %s",
+ input_bfd, (int) r_type, sym_name);
bfd_set_error (bfd_error_bad_value);
ret = FALSE;
continue;
- case (int)R_I370_NONE:
+ case (int) R_I370_NONE:
continue;
/* Relocations that may need to be propagated if this is a shared
- object. */
- case (int)R_I370_REL31:
+ object. */
+ case (int) R_I370_REL31:
/* If these relocations are not to a named symbol, they can be
handled right here, no need to bother the dynamic linker. */
if (h == NULL
|| strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
break;
- /* fall through */
+ /* Fall through. */
/* Relocations that always need to be propagated if this is a shared
- object. */
- case (int)R_I370_ADDR31:
- case (int)R_I370_ADDR16:
+ object. */
+ case (int) R_I370_ADDR31:
+ case (int) R_I370_ADDR16:
if (info->shared
&& r_symndx != 0)
{
#endif
/* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
+ are copied into the output file to be resolved at run
+ time. */
if (sreloc == NULL)
{
if (name == NULL)
return FALSE;
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
+ BFD_ASSERT (CONST_STRNEQ (name, ".rela")
&& strcmp (bfd_get_section_name (input_bfd,
input_section),
name + 5) == 0);
if (skip)
memset (&outrel, 0, sizeof outrel);
/* h->dynindx may be -1 if this symbol was marked to
- become local. */
+ become local. */
else if (h != NULL
&& ((! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ || !h->def_regular))
{
BFD_ASSERT (h->dynindx != -1);
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
{
long indx;
- if (h == NULL)
- sec = local_sections[r_symndx];
- else
- {
- BFD_ASSERT (h->root.type == bfd_link_hash_defined
- || (h->root.type
- == bfd_link_hash_defweak));
- sec = h->root.u.def.section;
- }
- if (sec != NULL && bfd_is_abs_section (sec))
+ if (bfd_is_abs_section (sec))
indx = 0;
else if (sec == NULL || sec->owner == NULL)
{
{
asection *osec;
+ /* We are turning this relocation into one
+ against a section symbol. It would be
+ proper to subtract the symbol's value,
+ osec->vma, from the emitted reloc addend,
+ but ld.so expects buggy relocs. */
osec = sec->output_section;
indx = elf_section_data (osec)->dynindx;
- BFD_ASSERT(indx > 0);
+ if (indx == 0)
+ {
+ struct elf_link_hash_table *htab;
+ htab = elf_hash_table (info);
+ osec = htab->text_index_section;
+ indx = elf_section_data (osec)->dynindx;
+ }
+ BFD_ASSERT (indx != 0);
#ifdef DEBUG
if (indx <= 0)
{
- printf ("indx=%d section=%s flags=%08x name=%s\n",
+ printf ("indx=%ld section=%s flags=%08x name=%s\n",
indx, osec->name, osec->flags,
h->root.root.string);
}
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
/* This reloc will be computed at runtime, so there's no
- need to do anything now, unless this is a RELATIVE
- reloc in an unallocated section. */
+ need to do anything now, unless this is a RELATIVE
+ reloc in an unallocated section. */
if (skip == -1
|| (input_section->flags & SEC_ALLOC) != 0
|| ELF32_R_TYPE (outrel.r_info) != R_I370_RELATIVE)
}
break;
- case (int)R_I370_COPY:
- case (int)R_I370_RELATIVE:
+ case (int) R_I370_COPY:
+ case (int) R_I370_RELATIVE:
(*_bfd_error_handler)
- ("%s: Relocation %s is not yet supported for symbol %s.",
- bfd_archive_filename (input_bfd),
+ ("%B: Relocation %s is not yet supported for symbol %s.",
+ input_bfd,
i370_elf_howto_table[(int) r_type]->name,
sym_name);
(int)r_type,
sym_name,
r_symndx,
- (long)offset,
- (long)addend);
+ (long) offset,
+ (long) addend);
#endif
- r = _bfd_final_link_relocate (howto,
- input_bfd,
- input_section,
- contents,
- offset,
- relocation,
- addend);
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
+ offset, relocation, addend);
if (r != bfd_reloc_ok)
{
const char *name;
if (h != NULL)
- name = h->root.root.string;
+ name = NULL;
else
{
name = bfd_elf_string_from_elf_section (input_bfd,
}
(*info->callbacks->reloc_overflow) (info,
+ (h ? &h->root : NULL),
name,
howto->name,
(bfd_vma) 0,
offset);
}
break;
-
}
}
}
return ret;
}
-
-static void
-i370_elf_post_process_headers (abfd, link_info)
- bfd * abfd;
- struct bfd_link_info * link_info ATTRIBUTE_UNUSED;
-{
- Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */
-
- i_ehdrp = elf_elfheader (abfd);
- i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
-}
\f
#define TARGET_BIG_SYM bfd_elf32_i370_vec
#define TARGET_BIG_NAME "elf32-i370"
#define ELF_MACHINE_ALT1 EM_I370_OLD
#endif
#define ELF_MAXPAGESIZE 0x1000
+#define ELF_OSABI ELFOSABI_LINUX
+
#define elf_info_to_howto i370_elf_info_to_howto
#define elf_backend_plt_not_loaded 1
-#define elf_backend_got_symbol_offset 4
-#define elf_backend_rela_normal 1
+#define elf_backend_rela_normal 1
#define bfd_elf32_bfd_reloc_type_lookup i370_elf_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup i370_elf_reloc_name_lookup
#define bfd_elf32_bfd_set_private_flags i370_elf_set_private_flags
#define bfd_elf32_bfd_merge_private_bfd_data i370_elf_merge_private_bfd_data
#define elf_backend_relocate_section i370_elf_relocate_section
-/* dynamic loader support is mostly broken; just enough here to be able to
- * link glibc's ld.so without errors.
- */
+/* Dynamic loader support is mostly broken; just enough here to be able to
+ link glibc's ld.so without errors. */
#define elf_backend_create_dynamic_sections i370_elf_create_dynamic_sections
#define elf_backend_size_dynamic_sections i370_elf_size_dynamic_sections
+#define elf_backend_init_index_section _bfd_elf_init_1_index_section
#define elf_backend_finish_dynamic_sections i370_elf_finish_dynamic_sections
#define elf_backend_fake_sections i370_elf_fake_sections
#define elf_backend_section_from_shdr i370_elf_section_from_shdr
#define elf_backend_adjust_dynamic_symbol i370_elf_adjust_dynamic_symbol
#define elf_backend_check_relocs i370_elf_check_relocs
+#define elf_backend_post_process_headers _bfd_elf_set_osabi
-/*
-#define elf_backend_add_symbol_hook i370_elf_add_symbol_hook
-#define elf_backend_finish_dynamic_symbol i370_elf_finish_dynamic_symbol
-#define elf_backend_additional_program_headers i370_elf_additional_program_headers
-#define elf_backend_modify_segment_map i370_elf_modify_segment_map
-*/
-
-#define elf_backend_post_process_headers i370_elf_post_process_headers
-
-static int i370_noop
- PARAMS ((void));
-
-static int i370_noop ()
+static int
+i370_noop (void)
{
return 1;
}
-/* we need to define these at least as no-ops to link glibc ld.so */
-
-#define elf_backend_add_symbol_hook \
- (bfd_boolean (*) \
- PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, \
- const char **, flagword *, asection **, bfd_vma *))) i370_noop
#define elf_backend_finish_dynamic_symbol \
(bfd_boolean (*) \
- PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, \
- Elf_Internal_Sym *))) i370_noop
-#define elf_backend_additional_program_headers \
- (int (*) PARAMS ((bfd *))) i370_noop
-#define elf_backend_modify_segment_map \
- (bfd_boolean (*) PARAMS ((bfd *))) i370_noop
+ (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, \
+ Elf_Internal_Sym *)) i370_noop
#include "elf32-target.h"
projects / thirdparty / binutils-gdb.git / blobdiff