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-rw-r--r--bfd/elfxx-ia64.c306
1 files changed, 142 insertions, 164 deletions
diff --git a/bfd/elfxx-ia64.c b/bfd/elfxx-ia64.c
index 943159b..dca8b45 100644
--- a/bfd/elfxx-ia64.c
+++ b/bfd/elfxx-ia64.c
@@ -2,21 +2,21 @@
Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
-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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
@@ -25,37 +25,33 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "opcode/ia64.h"
#include "elf/ia64.h"
-/*
- * THE RULES for all the stuff the linker creates --
- *
- * GOT Entries created in response to LTOFF or LTOFF_FPTR
- * relocations. Dynamic relocs created for dynamic
- * symbols in an application; REL relocs for locals
- * in a shared library.
- *
- * FPTR The canonical function descriptor. Created for local
- * symbols in applications. Descriptors for dynamic symbols
- * and local symbols in shared libraries are created by
- * ld.so. Thus there are no dynamic relocs against these
- * objects. The FPTR relocs for such _are_ passed through
- * to the dynamic relocation tables.
- *
- * FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
- * Requires the creation of a PLTOFF entry. This does not
- * require any dynamic relocations.
- *
- * PLTOFF Created by PLTOFF relocations. For local symbols, this
- * is an alternate function descriptor, and in shared libraries
- * requires two REL relocations. Note that this cannot be
- * transformed into an FPTR relocation, since it must be in
- * range of the GP. For dynamic symbols, this is a function
- * descriptor for a MIN_PLT entry, and requires one IPLT reloc.
- *
- * MIN_PLT Created by PLTOFF entries against dynamic symbols. This
- * does not reqire dynamic relocations.
- */
-
-#define USE_RELA /* we want RELA relocs, not REL */
+/* THE RULES for all the stuff the linker creates --
+
+ GOT Entries created in response to LTOFF or LTOFF_FPTR
+ relocations. Dynamic relocs created for dynamic
+ symbols in an application; REL relocs for locals
+ in a shared library.
+
+ FPTR The canonical function descriptor. Created for local
+ symbols in applications. Descriptors for dynamic symbols
+ and local symbols in shared libraries are created by
+ ld.so. Thus there are no dynamic relocs against these
+ objects. The FPTR relocs for such _are_ passed through
+ to the dynamic relocation tables.
+
+ FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
+ Requires the creation of a PLTOFF entry. This does not
+ require any dynamic relocations.
+
+ PLTOFF Created by PLTOFF relocations. For local symbols, this
+ is an alternate function descriptor, and in shared libraries
+ requires two REL relocations. Note that this cannot be
+ transformed into an FPTR relocation, since it must be in
+ range of the GP. For dynamic symbols, this is a function
+ descriptor for a MIN_PLT entry, and requires one IPLT reloc.
+
+ MIN_PLT Created by PLTOFF entries against dynamic symbols. This
+ does not reqire dynamic relocations. */
#define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
@@ -140,7 +136,7 @@ struct elfNN_ia64_link_hash_entry
struct elfNN_ia64_link_hash_table
{
- /* The main hash table */
+ /* The main hash table. */
struct elf_link_hash_table root;
asection *got_sec; /* the linkage table section (or NULL) */
@@ -174,7 +170,7 @@ static boolean elfNN_ia64_relax_section
static boolean is_unwind_section_name
PARAMS ((bfd *abfd, const char *));
static boolean elfNN_ia64_section_from_shdr
- PARAMS ((bfd *, ElfNN_Internal_Shdr *, char *));
+ PARAMS ((bfd *, ElfNN_Internal_Shdr *, const char *));
static boolean elfNN_ia64_section_flags
PARAMS ((flagword *, ElfNN_Internal_Shdr *));
static boolean elfNN_ia64_fake_sections
@@ -211,7 +207,8 @@ static struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry
PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
const char *string));
static void elfNN_ia64_hash_copy_indirect
- PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
+ PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+ struct elf_link_hash_entry *));
static void elfNN_ia64_hash_hide_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
static struct bfd_link_hash_table *elfNN_ia64_hash_table_create
@@ -327,7 +324,7 @@ static void elfNN_hpux_post_process_headers
boolean elfNN_hpux_backend_section_from_bfd_section
PARAMS ((bfd *abfd, asection *sec, int *retval));
-/* ia64-specific relocation */
+/* ia64-specific relocation. */
/* Perform a relocation. Not much to do here as all the hard work is
done in elfNN_ia64_final_link_relocate. */
@@ -461,7 +458,7 @@ static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
/* Given a BFD reloc type, return the matching HOWTO structure. */
-static reloc_howto_type*
+static reloc_howto_type *
lookup_howto (rtype)
unsigned int rtype;
{
@@ -691,15 +688,10 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
};
Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Shdr *shndx_hdr;
Elf_Internal_Rela *internal_relocs;
- Elf_Internal_Rela *free_relocs = NULL;
Elf_Internal_Rela *irel, *irelend;
bfd_byte *contents;
- bfd_byte *free_contents = NULL;
- ElfNN_External_Sym *extsyms;
- ElfNN_External_Sym *free_extsyms = NULL;
- Elf_External_Sym_Shndx *shndx_buf = NULL;
+ Elf_Internal_Sym *isymbuf = NULL;
struct elfNN_ia64_link_hash_table *ia64_info;
struct one_fixup *fixups = NULL;
boolean changed_contents = false;
@@ -726,10 +718,7 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
(abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
link_info->keep_memory));
if (internal_relocs == NULL)
- goto error_return;
-
- if (! link_info->keep_memory)
- free_relocs = internal_relocs;
+ return false;
ia64_info = elfNN_ia64_hash_table (link_info);
irelend = internal_relocs + sec->reloc_count;
@@ -741,8 +730,8 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
/* No branch-type relocations. */
if (irel == irelend)
{
- if (free_relocs != NULL)
- free (free_relocs);
+ if (elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
return true;
}
@@ -754,48 +743,15 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
if (contents == NULL)
goto error_return;
- free_contents = contents;
if (! bfd_get_section_contents (abfd, sec, contents,
(file_ptr) 0, sec->_raw_size))
goto error_return;
}
- /* Read this BFD's local symbols. */
- if (symtab_hdr->contents != NULL)
- extsyms = (ElfNN_External_Sym *) symtab_hdr->contents;
- else
- {
- bfd_size_type amt;
-
- amt = symtab_hdr->sh_info * sizeof (ElfNN_External_Sym);
- extsyms = (ElfNN_External_Sym *) bfd_malloc (amt);
- if (extsyms == NULL)
- goto error_return;
- free_extsyms = extsyms;
- if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (extsyms, amt, abfd) != amt)
- goto error_return;
- }
-
- shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
- if (shndx_hdr->sh_size != 0)
- {
- bfd_size_type amt;
-
- amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx);
- shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
- if (shndx_buf == NULL)
- goto error_return;
- if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (shndx_buf, amt, abfd) != amt)
- goto error_return;
- }
-
for (; irel < irelend; irel++)
{
bfd_vma symaddr, reladdr, trampoff, toff, roff;
- Elf_Internal_Sym isym;
asection *tsec;
struct one_fixup *f;
bfd_size_type amt;
@@ -806,25 +762,34 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
/* Get the value of the symbol referred to by the reloc. */
if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
{
- ElfNN_External_Sym *esym;
- Elf_External_Sym_Shndx *shndx;
-
/* A local symbol. */
- esym = extsyms + ELFNN_R_SYM (irel->r_info);
- shndx = shndx_buf + (shndx_buf ? ELFNN_R_SYM (irel->r_info) : 0);
- bfd_elfNN_swap_symbol_in (abfd, esym, shndx, &isym);
- if (isym.st_shndx == SHN_UNDEF)
+ Elf_Internal_Sym *isym;
+
+ /* Read this BFD's local symbols. */
+ if (isymbuf == NULL)
+ {
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == 0)
+ goto error_return;
+ }
+
+ isym = isymbuf + ELF64_R_SYM (irel->r_info);
+ if (isym->st_shndx == SHN_UNDEF)
continue; /* We can't do anthing with undefined symbols. */
- else if (isym.st_shndx == SHN_ABS)
+ else if (isym->st_shndx == SHN_ABS)
tsec = bfd_abs_section_ptr;
- else if (isym.st_shndx == SHN_COMMON)
+ else if (isym->st_shndx == SHN_COMMON)
tsec = bfd_com_section_ptr;
- else if (isym.st_shndx == SHN_IA_64_ANSI_COMMON)
+ else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
tsec = bfd_com_section_ptr;
else
- tsec = bfd_section_from_elf_index (abfd, isym.st_shndx);
+ tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
- toff = isym.st_value;
+ toff = isym->st_value;
}
else
{
@@ -972,50 +937,50 @@ elfNN_ia64_relax_section (abfd, sec, link_info, again)
free (f);
}
- if (changed_relocs)
- elf_section_data (sec)->relocs = internal_relocs;
- else if (free_relocs != NULL)
- free (free_relocs);
-
- if (changed_contents)
- elf_section_data (sec)->this_hdr.contents = contents;
- else if (free_contents != NULL)
+ if (isymbuf != NULL
+ && symtab_hdr->contents != (unsigned char *) isymbuf)
{
if (! link_info->keep_memory)
- free (free_contents);
+ free (isymbuf);
else
{
- /* Cache the section contents for elf_link_input_bfd. */
- elf_section_data (sec)->this_hdr.contents = contents;
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = (unsigned char *) isymbuf;
}
}
- if (shndx_buf != NULL)
- free (shndx_buf);
-
- if (free_extsyms != NULL)
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
{
- if (! link_info->keep_memory)
- free (free_extsyms);
+ if (!changed_contents && !link_info->keep_memory)
+ free (contents);
else
{
- /* Cache the symbols for elf_link_input_bfd. */
- symtab_hdr->contents = (unsigned char *) extsyms;
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (sec)->this_hdr.contents = contents;
}
}
+ if (elf_section_data (sec)->relocs != internal_relocs)
+ {
+ if (!changed_relocs)
+ free (internal_relocs);
+ else
+ elf_section_data (sec)->relocs = internal_relocs;
+ }
+
*again = changed_contents || changed_relocs;
return true;
error_return:
- if (free_relocs != NULL)
- free (free_relocs);
- if (free_contents != NULL)
- free (free_contents);
- if (shndx_buf != NULL)
- free (shndx_buf);
- if (free_extsyms != NULL)
- free (free_extsyms);
+ if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
+ free (isymbuf);
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ free (contents);
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
return false;
}
@@ -1047,7 +1012,7 @@ static boolean
elfNN_ia64_section_from_shdr (abfd, hdr, name)
bfd *abfd;
ElfNN_Internal_Shdr *hdr;
- char *name;
+ const char *name;
{
asection *newsect;
@@ -1119,24 +1084,22 @@ elfNN_ia64_fake_sections (abfd, hdr, sec)
else if (strcmp (name, ".HP.opt_annot") == 0)
hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
else if (strcmp (name, ".reloc") == 0)
- /*
- * This is an ugly, but unfortunately necessary hack that is
- * needed when producing EFI binaries on IA-64. It tells
- * elf.c:elf_fake_sections() not to consider ".reloc" as a section
- * containing ELF relocation info. We need this hack in order to
- * be able to generate ELF binaries that can be translated into
- * EFI applications (which are essentially COFF objects). Those
- * files contain a COFF ".reloc" section inside an ELFNN object,
- * which would normally cause BFD to segfault because it would
- * attempt to interpret this section as containing relocation
- * entries for section "oc". With this hack enabled, ".reloc"
- * will be treated as a normal data section, which will avoid the
- * segfault. However, you won't be able to create an ELFNN binary
- * with a section named "oc" that needs relocations, but that's
- * the kind of ugly side-effects you get when detecting section
- * types based on their names... In practice, this limitation is
- * unlikely to bite.
- */
+ /* This is an ugly, but unfortunately necessary hack that is
+ needed when producing EFI binaries on IA-64. It tells
+ elf.c:elf_fake_sections() not to consider ".reloc" as a section
+ containing ELF relocation info. We need this hack in order to
+ be able to generate ELF binaries that can be translated into
+ EFI applications (which are essentially COFF objects). Those
+ files contain a COFF ".reloc" section inside an ELFNN object,
+ which would normally cause BFD to segfault because it would
+ attempt to interpret this section as containing relocation
+ entries for section "oc". With this hack enabled, ".reloc"
+ will be treated as a normal data section, which will avoid the
+ segfault. However, you won't be able to create an ELFNN binary
+ with a section named "oc" that needs relocations, but that's
+ the kind of ugly side-effects you get when detecting section
+ types based on their names... In practice, this limitation is
+ unlikely to bite. */
hdr->sh_type = SHT_PROGBITS;
if (sec->flags & SEC_SMALL_DATA)
@@ -1225,6 +1188,19 @@ elfNN_ia64_final_write_processing (abfd, linker)
break;
}
}
+
+ if (! elf_flags_init (abfd))
+ {
+ unsigned long flags = 0;
+
+ if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
+ flags |= EF_IA_64_BE;
+ if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
+ flags |= EF_IA_64_ABI64;
+
+ elf_elfheader(abfd)->e_flags = flags;
+ elf_flags_init (abfd) = true;
+ }
}
/* Hook called by the linker routine which adds symbols from an object
@@ -1401,8 +1377,6 @@ elfNN_ia64_modify_segment_map (abfd)
struct elf_segment_map *m, **pm;
Elf_Internal_Shdr *hdr;
asection *s;
- boolean unwind_found;
- asection *unwind_sec;
/* If we need a PT_IA_64_ARCHEXT segment, it must come before
all PT_LOAD segments. */
@@ -1447,20 +1421,16 @@ elfNN_ia64_modify_segment_map (abfd)
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
if (m->p_type == PT_IA_64_UNWIND)
{
+ int i;
+
/* Look through all sections in the unwind segment
for a match since there may be multiple sections
to a segment. */
+ for (i = m->count - 1; i >= 0; --i)
+ if (m->sections[i] == s)
+ break;
- unwind_sec = m->sections[0];
- unwind_found = false;
- while (unwind_sec != NULL && !unwind_found)
- {
- if (unwind_sec == s)
- unwind_found = true;
- else
- unwind_sec = unwind_sec -> next;
- }
- if (unwind_found)
+ if (i >= 0)
break;
}
@@ -1548,6 +1518,8 @@ elfNN_ia64_dynamic_symbol_p (h, info)
case STV_INTERNAL:
case STV_HIDDEN:
return false;
+ default:
+ break;
}
if (h->root.type == bfd_link_hash_undefweak
@@ -1631,7 +1603,8 @@ elfNN_ia64_new_elf_hash_entry (entry, table, string)
}
static void
-elfNN_ia64_hash_copy_indirect (xdir, xind)
+elfNN_ia64_hash_copy_indirect (bed, xdir, xind)
+ struct elf_backend_data *bed ATTRIBUTE_UNUSED;
struct elf_link_hash_entry *xdir, *xind;
{
struct elfNN_ia64_link_hash_entry *dir, *ind;
@@ -4834,6 +4807,9 @@ elfNN_hpux_backend_section_from_bfd_section (abfd, sec, retval)
#undef elf_backend_section_from_bfd_section
#define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
+#undef elf_backend_want_p_paddr_set_to_zero
+#define elf_backend_want_p_paddr_set_to_zero 1
+
#undef ELF_MAXPAGESIZE
#define ELF_MAXPAGESIZE 0x1000 /* 1K */
@@ -4841,3 +4817,5 @@ elfNN_hpux_backend_section_from_bfd_section (abfd, sec, retval)
#define elfNN_bed elfNN_ia64_hpux_bed
#include "elfNN-target.h"
+
+#undef elf_backend_want_p_paddr_set_to_zero
generated by cgit v1.1 at 2025-02-16 12:14:21 +0000