/* ELF executable support for BFD.
- Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+ Copyright 1991, 92, 93, 94, 95, 96, 97, 98, 1999, 2000 Free
+ Software Foundation, Inc.
Written by Fred Fish @ Cygnus Support, from information published
in "UNIX System V Release 4, Programmers Guide: ANSI C and
it's cast in stone.
*/
-#include <string.h> /* For strrchr and friends */
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#define elf_swap_dyn_out NAME(bfd_elf,swap_dyn_out)
#define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound)
#define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc)
+#define elf_slurp_symbol_table NAME(bfd_elf,slurp_symbol_table)
#define elf_get_symtab NAME(bfd_elf,get_symtab)
#define elf_canonicalize_dynamic_symtab \
NAME(bfd_elf,canonicalize_dynamic_symtab)
#define elf_find_section NAME(bfd_elf,find_section)
#define elf_bfd_link_add_symbols NAME(bfd_elf,bfd_link_add_symbols)
#define elf_add_dynamic_entry NAME(bfd_elf,add_dynamic_entry)
+#define elf_write_shdrs_and_ehdr NAME(bfd_elf,write_shdrs_and_ehdr)
+#define elf_write_out_phdrs NAME(bfd_elf,write_out_phdrs)
+#define elf_write_relocs NAME(bfd_elf,write_relocs)
+#define elf_slurp_reloc_table NAME(bfd_elf,slurp_reloc_table)
#define elf_link_create_dynamic_sections \
NAME(bfd_elf,link_create_dynamic_sections)
#define elf_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
#define elf_bfd_final_link NAME(bfd_elf,bfd_final_link)
+#define elf_create_pointer_linker_section NAME(bfd_elf,create_pointer_linker_section)
+#define elf_finish_pointer_linker_section NAME(bfd_elf,finish_pointer_linker_section)
+#define elf_gc_sections NAME(_bfd_elf,gc_sections)
+#define elf_gc_common_finalize_got_offsets \
+ NAME(_bfd_elf,gc_common_finalize_got_offsets)
+#define elf_gc_common_final_link NAME(_bfd_elf,gc_common_final_link)
+#define elf_gc_record_vtinherit NAME(_bfd_elf,gc_record_vtinherit)
+#define elf_gc_record_vtentry NAME(_bfd_elf,gc_record_vtentry)
+#define elf_link_record_local_dynamic_symbol \
+ NAME(_bfd_elf,link_record_local_dynamic_symbol)
#if ARCH_SIZE == 64
#define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y)
#define LOG_FILE_ALIGN 2
#endif
-/* Forward declarations of static functions */
+/* Static functions */
+
+static void elf_swap_ehdr_in
+ PARAMS ((bfd *, const Elf_External_Ehdr *, Elf_Internal_Ehdr *));
+static void elf_swap_ehdr_out
+ PARAMS ((bfd *, const Elf_Internal_Ehdr *, Elf_External_Ehdr *));
+static void elf_swap_shdr_in
+ PARAMS ((bfd *, const Elf_External_Shdr *, Elf_Internal_Shdr *));
+static void elf_swap_shdr_out
+ PARAMS ((bfd *, const Elf_Internal_Shdr *, Elf_External_Shdr *));
#define elf_stringtab_init _bfd_elf_stringtab_init
-extern struct bfd_strtab_hash *_bfd_elf_stringtab_init PARAMS ((void));
#define section_from_elf_index bfd_section_from_elf_index
-extern boolean bfd_section_from_phdr PARAMS ((bfd *, Elf_Internal_Phdr *,
- int));
-
-static long elf_slurp_symbol_table PARAMS ((bfd *, asymbol **, boolean));
-
-static boolean elf_slurp_reloc_table PARAMS ((bfd *, asection *, asymbol **));
-
- int _bfd_elf_symbol_from_bfd_symbol PARAMS ((bfd *,
- struct symbol_cache_entry **));
-static void write_relocs PARAMS ((bfd *, asection *, PTR));
+static boolean elf_slurp_reloc_table_from_section
+ PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, bfd_size_type,
+ arelent *, asymbol **, boolean));
- boolean bfd_section_from_shdr PARAMS ((bfd *, unsigned int shindex));
+static boolean elf_file_p PARAMS ((Elf_External_Ehdr *));
#ifdef DEBUG
static void elf_debug_section PARAMS ((int, Elf_Internal_Shdr *));
can be handled by explicitly specifying 32 bits or "the long type". */
#if ARCH_SIZE == 64
#define put_word bfd_h_put_64
+#define put_signed_word bfd_h_put_signed_64
#define get_word bfd_h_get_64
+#define get_signed_word bfd_h_get_signed_64
#endif
#if ARCH_SIZE == 32
#define put_word bfd_h_put_32
+#define put_signed_word bfd_h_put_signed_32
#define get_word bfd_h_get_32
+#define get_signed_word bfd_h_get_signed_32
#endif
/* Translate an ELF symbol in external format into an ELF symbol in internal
void
elf_swap_symbol_in (abfd, src, dst)
bfd *abfd;
- Elf_External_Sym *src;
+ const Elf_External_Sym *src;
Elf_Internal_Sym *dst;
{
+ int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
+
dst->st_name = bfd_h_get_32 (abfd, (bfd_byte *) src->st_name);
- dst->st_value = get_word (abfd, (bfd_byte *) src->st_value);
+ if (signed_vma)
+ dst->st_value = get_signed_word (abfd, (bfd_byte *) src->st_value);
+ else
+ dst->st_value = get_word (abfd, (bfd_byte *) src->st_value);
dst->st_size = get_word (abfd, (bfd_byte *) src->st_size);
dst->st_info = bfd_h_get_8 (abfd, (bfd_byte *) src->st_info);
dst->st_other = bfd_h_get_8 (abfd, (bfd_byte *) src->st_other);
void
elf_swap_symbol_out (abfd, src, cdst)
bfd *abfd;
- Elf_Internal_Sym *src;
+ const Elf_Internal_Sym *src;
PTR cdst;
{
Elf_External_Sym *dst = (Elf_External_Sym *) cdst;
static void
elf_swap_ehdr_in (abfd, src, dst)
bfd *abfd;
- Elf_External_Ehdr *src;
+ const Elf_External_Ehdr *src;
Elf_Internal_Ehdr *dst;
{
+ int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
memcpy (dst->e_ident, src->e_ident, EI_NIDENT);
dst->e_type = bfd_h_get_16 (abfd, (bfd_byte *) src->e_type);
dst->e_machine = bfd_h_get_16 (abfd, (bfd_byte *) src->e_machine);
dst->e_version = bfd_h_get_32 (abfd, (bfd_byte *) src->e_version);
- dst->e_entry = get_word (abfd, (bfd_byte *) src->e_entry);
+ if (signed_vma)
+ dst->e_entry = get_signed_word (abfd, (bfd_byte *) src->e_entry);
+ else
+ dst->e_entry = get_word (abfd, (bfd_byte *) src->e_entry);
dst->e_phoff = get_word (abfd, (bfd_byte *) src->e_phoff);
dst->e_shoff = get_word (abfd, (bfd_byte *) src->e_shoff);
dst->e_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->e_flags);
static void
elf_swap_ehdr_out (abfd, src, dst)
bfd *abfd;
- Elf_Internal_Ehdr *src;
+ const Elf_Internal_Ehdr *src;
Elf_External_Ehdr *dst;
{
+ int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
memcpy (dst->e_ident, src->e_ident, EI_NIDENT);
/* note that all elements of dst are *arrays of unsigned char* already... */
bfd_h_put_16 (abfd, src->e_type, dst->e_type);
bfd_h_put_16 (abfd, src->e_machine, dst->e_machine);
bfd_h_put_32 (abfd, src->e_version, dst->e_version);
- put_word (abfd, src->e_entry, dst->e_entry);
+ if (signed_vma)
+ put_signed_word (abfd, src->e_entry, dst->e_entry);
+ else
+ put_word (abfd, src->e_entry, dst->e_entry);
put_word (abfd, src->e_phoff, dst->e_phoff);
put_word (abfd, src->e_shoff, dst->e_shoff);
bfd_h_put_32 (abfd, src->e_flags, dst->e_flags);
static void
elf_swap_shdr_in (abfd, src, dst)
bfd *abfd;
- Elf_External_Shdr *src;
+ const Elf_External_Shdr *src;
Elf_Internal_Shdr *dst;
{
+ int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
+
dst->sh_name = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_name);
dst->sh_type = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_type);
dst->sh_flags = get_word (abfd, (bfd_byte *) src->sh_flags);
- dst->sh_addr = get_word (abfd, (bfd_byte *) src->sh_addr);
+ if (signed_vma)
+ dst->sh_addr = get_signed_word (abfd, (bfd_byte *) src->sh_addr);
+ else
+ dst->sh_addr = get_word (abfd, (bfd_byte *) src->sh_addr);
dst->sh_offset = get_word (abfd, (bfd_byte *) src->sh_offset);
dst->sh_size = get_word (abfd, (bfd_byte *) src->sh_size);
dst->sh_link = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_link);
static void
elf_swap_shdr_out (abfd, src, dst)
bfd *abfd;
- Elf_Internal_Shdr *src;
+ const Elf_Internal_Shdr *src;
Elf_External_Shdr *dst;
{
/* note that all elements of dst are *arrays of unsigned char* already... */
void
elf_swap_phdr_in (abfd, src, dst)
bfd *abfd;
- Elf_External_Phdr *src;
+ const Elf_External_Phdr *src;
Elf_Internal_Phdr *dst;
{
+ int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma;
+
dst->p_type = bfd_h_get_32 (abfd, (bfd_byte *) src->p_type);
dst->p_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->p_flags);
dst->p_offset = get_word (abfd, (bfd_byte *) src->p_offset);
- dst->p_vaddr = get_word (abfd, (bfd_byte *) src->p_vaddr);
- dst->p_paddr = get_word (abfd, (bfd_byte *) src->p_paddr);
+ if (signed_vma)
+ {
+ dst->p_vaddr = get_signed_word (abfd, (bfd_byte *) src->p_vaddr);
+ dst->p_paddr = get_signed_word (abfd, (bfd_byte *) src->p_paddr);
+ }
+ else
+ {
+ dst->p_vaddr = get_word (abfd, (bfd_byte *) src->p_vaddr);
+ dst->p_paddr = get_word (abfd, (bfd_byte *) src->p_paddr);
+ }
dst->p_filesz = get_word (abfd, (bfd_byte *) src->p_filesz);
dst->p_memsz = get_word (abfd, (bfd_byte *) src->p_memsz);
dst->p_align = get_word (abfd, (bfd_byte *) src->p_align);
void
elf_swap_phdr_out (abfd, src, dst)
bfd *abfd;
- Elf_Internal_Phdr *src;
+ const Elf_Internal_Phdr *src;
Elf_External_Phdr *dst;
{
/* note that all elements of dst are *arrays of unsigned char* already... */
INLINE void
elf_swap_reloc_in (abfd, src, dst)
bfd *abfd;
- Elf_External_Rel *src;
+ const Elf_External_Rel *src;
Elf_Internal_Rel *dst;
{
dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset);
INLINE void
elf_swap_reloca_in (abfd, src, dst)
bfd *abfd;
- Elf_External_Rela *src;
+ const Elf_External_Rela *src;
Elf_Internal_Rela *dst;
{
dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset);
dst->r_info = get_word (abfd, (bfd_byte *) src->r_info);
- dst->r_addend = get_word (abfd, (bfd_byte *) src->r_addend);
+ dst->r_addend = get_signed_word (abfd, (bfd_byte *) src->r_addend);
}
/* Translate an ELF reloc from internal format to external format. */
INLINE void
elf_swap_reloc_out (abfd, src, dst)
bfd *abfd;
- Elf_Internal_Rel *src;
+ const Elf_Internal_Rel *src;
Elf_External_Rel *dst;
{
put_word (abfd, src->r_offset, dst->r_offset);
INLINE void
elf_swap_reloca_out (abfd, src, dst)
bfd *abfd;
- Elf_Internal_Rela *src;
+ const Elf_Internal_Rela *src;
Elf_External_Rela *dst;
{
put_word (abfd, src->r_offset, dst->r_offset);
put_word (abfd, src->r_info, dst->r_info);
- put_word (abfd, src->r_addend, dst->r_addend);
+ put_signed_word (abfd, src->r_addend, dst->r_addend);
}
INLINE void
}
INLINE void
-elf_swap_dyn_out (abfd, src, dst)
+elf_swap_dyn_out (abfd, src, p)
bfd *abfd;
const Elf_Internal_Dyn *src;
- Elf_External_Dyn *dst;
+ PTR p;
{
+ Elf_External_Dyn *dst = (Elf_External_Dyn *) p;
+
put_word (abfd, src->d_tag, dst->d_tag);
put_word (abfd, src->d_un.d_val, dst->d_un.d_val);
}
struct elf_backend_data *ebd;
struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd);
struct elf_obj_tdata *new_tdata = NULL;
+ asection *s;
/* Read in the ELF header in external format. */
elf_debug_file (i_ehdrp);
#endif
+ /* Reject ET_CORE (header indicates core file, not object file) */
+ if (i_ehdrp->e_type == ET_CORE)
+ goto got_wrong_format_error;
+
/* If there is no section header table, we're hosed. */
if (i_ehdrp->e_shoff == 0)
goto got_wrong_format_error;
if ((*target_ptr)->flavour != bfd_target_elf_flavour)
continue;
back = (struct elf_backend_data *) (*target_ptr)->backend_data;
- if (back->elf_machine_code == i_ehdrp->e_machine)
+ if (back->elf_machine_code == i_ehdrp->e_machine
+ || (back->elf_machine_alt1 != 0
+ && back->elf_machine_alt1 == i_ehdrp->e_machine)
+ || (back->elf_machine_alt2 != 0
+ && back->elf_machine_alt2 == i_ehdrp->e_machine))
{
/* target_ptr is an ELF backend which matches this
object file, so reject the generic ELF target. */
abfd->flags |= D_PAGED;
if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0))
- goto got_no_match;
+ {
+ /* It's OK if this fails for the generic target. */
+ if (ebd->elf_machine_code != EM_NONE)
+ goto got_no_match;
+ }
/* Remember the entry point specified in the ELF file header. */
- bfd_get_start_address (abfd) = i_ehdrp->e_entry;
+ bfd_set_start_address (abfd, i_ehdrp->e_entry);
/* Allocate space for a copy of the section header table in
internal form, seek to the section header table in the file,
goto got_no_match;
elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
elf_elfsections (abfd)[shindex] = i_shdrp + shindex;
+
+ /* If the section is loaded, but not page aligned, clear
+ D_PAGED. */
+ if ((i_shdrp[shindex].sh_flags & SHF_ALLOC) != 0
+ && i_shdrp[shindex].sh_type != SHT_NOBITS
+ && (((i_shdrp[shindex].sh_addr - i_shdrp[shindex].sh_offset)
+ % ebd->maxpagesize)
+ != 0))
+ abfd->flags &= ~D_PAGED;
}
if (i_ehdrp->e_shstrndx)
{
goto got_wrong_format_error;
}
+ /* If we have created any reloc sections that are associated with
+ debugging sections, mark the reloc sections as debugging as well. */
+ for (s = abfd->sections; s != NULL; s = s->next)
+ {
+ if ((elf_section_data (s)->this_hdr.sh_type == SHT_REL
+ || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)
+ && elf_section_data (s)->this_hdr.sh_info > 0)
+ {
+ unsigned long targ_index;
+ asection *targ_sec;
+
+ targ_index = elf_section_data (s)->this_hdr.sh_info;
+ targ_sec = bfd_section_from_elf_index (abfd, targ_index);
+ if (targ_sec != NULL
+ && (targ_sec->flags & SEC_DEBUGGING) != 0)
+ s->flags |= SEC_DEBUGGING;
+ }
+ }
+
return (abfd->xvec);
-got_wrong_format_error:
+ got_wrong_format_error:
bfd_set_error (bfd_error_wrong_format);
- goto got_no_match;
-got_no_match:
+ got_no_match:
if (new_tdata != NULL
&& new_tdata->elf_sect_ptr != NULL)
bfd_release (abfd, new_tdata->elf_sect_ptr);
return (NULL);
}
\f
-
/* ELF .o/exec file writing */
-static void
-write_relocs (abfd, sec, data)
+/* Write out the relocs. */
+
+void
+elf_write_relocs (abfd, sec, data)
bfd *abfd;
asection *sec;
PTR data;
Elf_External_Rela *outbound_relocas;
Elf_External_Rel *outbound_relocs;
unsigned int idx;
- int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
+ int use_rela_p;
asymbol *last_sym = 0;
- int last_sym_idx = 9999999; /* should always be written before use */
+ int last_sym_idx = 0;
/* If we have already failed, don't do anything. */
if (*failedp)
return;
}
+ /* Figure out whether the relocations are RELA or REL relocations. */
+ if (rela_hdr->sh_type == SHT_RELA)
+ use_rela_p = true;
+ else if (rela_hdr->sh_type == SHT_REL)
+ use_rela_p = false;
+ else
+ /* Every relocation section should be either an SHT_RELA or an
+ SHT_REL section. */
+ abort ();
+
/* orelocation has the data, reloc_count has the count... */
if (use_rela_p)
{
sym = *ptr->sym_ptr_ptr;
if (sym == last_sym)
n = last_sym_idx;
+ else if (bfd_is_abs_section (sym->section) && sym->value == 0)
+ n = STN_UNDEF;
else
{
last_sym = sym;
- last_sym_idx = n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
+ n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
+ if (n < 0)
+ {
+ *failedp = true;
+ return;
+ }
+ last_sym_idx = n;
}
+
+ if ((*ptr->sym_ptr_ptr)->the_bfd != NULL
+ && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
+ && ! _bfd_elf_validate_reloc (abfd, ptr))
+ {
+ *failedp = true;
+ return;
+ }
+
dst_rela.r_info = ELF_R_INFO (n, ptr->howto->type);
dst_rela.r_addend = ptr->addend;
if (sym == last_sym)
n = last_sym_idx;
+ else if (bfd_is_abs_section (sym->section) && sym->value == 0)
+ n = STN_UNDEF;
else
{
last_sym = sym;
- last_sym_idx = n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
+ n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
+ if (n < 0)
+ {
+ *failedp = true;
+ return;
+ }
+ last_sym_idx = n;
+ }
+
+ if ((*ptr->sym_ptr_ptr)->the_bfd != NULL
+ && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
+ && ! _bfd_elf_validate_reloc (abfd, ptr))
+ {
+ *failedp = true;
+ return;
}
+
dst_rel.r_info = ELF_R_INFO (n, ptr->howto->type);
elf_swap_reloc_out (abfd, &dst_rel, src_rel);
}
}
-static int
-write_out_phdrs (abfd, phdr, count)
+/* Write out the program headers. */
+
+int
+elf_write_out_phdrs (abfd, phdr, count)
bfd *abfd;
- Elf_Internal_Phdr *phdr;
+ const Elf_Internal_Phdr *phdr;
int count;
{
while (count--)
return 0;
}
-static boolean
-write_shdrs_and_ehdr (abfd)
+/* Write out the section headers and the ELF file header. */
+
+boolean
+elf_write_shdrs_and_ehdr (abfd)
bfd *abfd;
{
Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
return true;
}
-static long
+long
elf_slurp_symbol_table (abfd, symptrs, dynamic)
bfd *abfd;
asymbol **symptrs; /* Buffer for generated bfd symbols */
boolean dynamic;
{
Elf_Internal_Shdr *hdr;
- long symcount; /* Number of external ELF symbols */
+ Elf_Internal_Shdr *verhdr;
+ unsigned long symcount; /* Number of external ELF symbols */
elf_symbol_type *sym; /* Pointer to current bfd symbol */
elf_symbol_type *symbase; /* Buffer for generated bfd symbols */
Elf_Internal_Sym i_sym;
Elf_External_Sym *x_symp = NULL;
+ Elf_External_Versym *x_versymp = NULL;
/* Read each raw ELF symbol, converting from external ELF form to
internal ELF form, and then using the information to create a
space left over at the end. When we have all the symbols, we
build the caller's pointer vector. */
- if (dynamic)
- hdr = &elf_tdata (abfd)->dynsymtab_hdr;
+ if (! dynamic)
+ {
+ hdr = &elf_tdata (abfd)->symtab_hdr;
+ verhdr = NULL;
+ }
else
- hdr = &elf_tdata (abfd)->symtab_hdr;
+ {
+ hdr = &elf_tdata (abfd)->dynsymtab_hdr;
+ if (elf_dynversym (abfd) == 0)
+ verhdr = NULL;
+ else
+ verhdr = &elf_tdata (abfd)->dynversym_hdr;
+ if ((elf_tdata (abfd)->dynverdef_section != 0
+ && elf_tdata (abfd)->verdef == NULL)
+ || (elf_tdata (abfd)->dynverref_section != 0
+ && elf_tdata (abfd)->verref == NULL))
+ {
+ if (! _bfd_elf_slurp_version_tables (abfd))
+ return -1;
+ }
+ }
+
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
return -1;
sym = symbase = NULL;
else
{
- long i;
+ unsigned long i;
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
return -1;
if (bfd_read ((PTR) x_symp, sizeof (Elf_External_Sym), symcount, abfd)
!= symcount * sizeof (Elf_External_Sym))
goto error_return;
+
+ /* Read the raw ELF version symbol information. */
+
+ if (verhdr != NULL
+ && verhdr->sh_size / sizeof (Elf_External_Versym) != symcount)
+ {
+ (*_bfd_error_handler)
+ (_("%s: version count (%ld) does not match symbol count (%ld)"),
+ abfd->filename,
+ (long) (verhdr->sh_size / sizeof (Elf_External_Versym)),
+ symcount);
+
+ /* Slurp in the symbols without the version information,
+ since that is more helpful than just quitting. */
+ verhdr = NULL;
+ }
+
+ if (verhdr != NULL)
+ {
+ if (bfd_seek (abfd, verhdr->sh_offset, SEEK_SET) != 0)
+ goto error_return;
+
+ x_versymp = (Elf_External_Versym *) bfd_malloc (verhdr->sh_size);
+ if (x_versymp == NULL && verhdr->sh_size != 0)
+ goto error_return;
+
+ if (bfd_read ((PTR) x_versymp, 1, verhdr->sh_size, abfd)
+ != verhdr->sh_size)
+ goto error_return;
+ }
+
/* Skip first symbol, which is a null dummy. */
for (i = 1; i < symcount; i++)
{
else
sym->symbol.section = bfd_abs_section_ptr;
- sym->symbol.value -= sym->symbol.section->vma;
+ /* If this is a relocateable file, then the symbol value is
+ already section relative. */
+ if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
+ sym->symbol.value -= sym->symbol.section->vma;
switch (ELF_ST_BIND (i_sym.st_info))
{
case STT_FUNC:
sym->symbol.flags |= BSF_FUNCTION;
break;
+ case STT_OBJECT:
+ sym->symbol.flags |= BSF_OBJECT;
+ break;
}
if (dynamic)
sym->symbol.flags |= BSF_DYNAMIC;
+ if (x_versymp != NULL)
+ {
+ Elf_Internal_Versym iversym;
+
+ _bfd_elf_swap_versym_in (abfd, x_versymp + i, &iversym);
+ sym->version = iversym.vs_vers;
+ }
+
/* Do some backend-specific processing on this symbol. */
{
struct elf_backend_data *ebd = get_elf_backend_data (abfd);
*symptrs = 0; /* Final null pointer */
}
+ if (x_versymp != NULL)
+ free (x_versymp);
if (x_symp != NULL)
free (x_symp);
return symcount;
error_return:
+ if (x_versymp != NULL)
+ free (x_versymp);
if (x_symp != NULL)
free (x_symp);
return -1;
}
-/* Read in and swap the external relocs. */
+/* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of
+ them. */
static boolean
-elf_slurp_reloc_table (abfd, asect, symbols)
+elf_slurp_reloc_table_from_section (abfd, asect, rel_hdr, reloc_count,
+ relents, symbols, dynamic)
bfd *abfd;
asection *asect;
+ Elf_Internal_Shdr *rel_hdr;
+ bfd_size_type reloc_count;
+ arelent *relents;
asymbol **symbols;
+ boolean dynamic;
{
struct elf_backend_data * const ebd = get_elf_backend_data (abfd);
- struct bfd_elf_section_data * const d = elf_section_data (asect);
PTR allocated = NULL;
bfd_byte *native_relocs;
- arelent *relents;
arelent *relent;
unsigned int i;
int entsize;
- if (asect->relocation != NULL
- || (asect->flags & SEC_RELOC) == 0
- || asect->reloc_count == 0)
- return true;
-
- BFD_ASSERT (asect->rel_filepos == d->rel_hdr.sh_offset
- && (asect->reloc_count
- == d->rel_hdr.sh_size / d->rel_hdr.sh_entsize));
-
- allocated = (PTR) bfd_malloc ((size_t) d->rel_hdr.sh_size);
+ allocated = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size);
if (allocated == NULL)
goto error_return;
- if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0
- || (bfd_read (allocated, 1, d->rel_hdr.sh_size, abfd)
- != d->rel_hdr.sh_size))
+ if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
+ || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd)
+ != rel_hdr->sh_size))
goto error_return;
native_relocs = (bfd_byte *) allocated;
- relents = ((arelent *)
- bfd_alloc (abfd, asect->reloc_count * sizeof (arelent)));
- if (relents == NULL)
- goto error_return;
-
- entsize = d->rel_hdr.sh_entsize;
+ entsize = rel_hdr->sh_entsize;
BFD_ASSERT (entsize == sizeof (Elf_External_Rel)
|| entsize == sizeof (Elf_External_Rela));
for (i = 0, relent = relents;
- i < asect->reloc_count;
+ i < reloc_count;
i++, relent++, native_relocs += entsize)
{
Elf_Internal_Rela rela;
/* The address of an ELF reloc is section relative for an object
file, and absolute for an executable file or shared library.
- The address of a BFD reloc is always section relative. */
- if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
+ The address of a normal BFD reloc is always section relative,
+ and the address of a dynamic reloc is absolute.. */
+ if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
relent->address = rela.r_offset;
else
relent->address = rela.r_offset - asect->vma;
(*ebd->elf_info_to_howto_rel) (abfd, relent, &rel);
}
- asect->relocation = relents;
-
if (allocated != NULL)
free (allocated);
return false;
}
+/* Read in and swap the external relocs. */
+
+boolean
+elf_slurp_reloc_table (abfd, asect, symbols, dynamic)
+ bfd *abfd;
+ asection *asect;
+ asymbol **symbols;
+ boolean dynamic;
+{
+ struct bfd_elf_section_data * const d = elf_section_data (asect);
+ Elf_Internal_Shdr *rel_hdr;
+ Elf_Internal_Shdr *rel_hdr2;
+ bfd_size_type reloc_count;
+ bfd_size_type reloc_count2;
+ arelent *relents;
+
+ if (asect->relocation != NULL)
+ return true;
+
+ if (! dynamic)
+ {
+ if ((asect->flags & SEC_RELOC) == 0
+ || asect->reloc_count == 0)
+ return true;
+
+ rel_hdr = &d->rel_hdr;
+ reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize;
+ rel_hdr2 = d->rel_hdr2;
+ reloc_count2 = (rel_hdr2
+ ? (rel_hdr2->sh_size / rel_hdr2->sh_entsize)
+ : 0);
+
+ BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2);
+ BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
+ || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
+
+ }
+ else
+ {
+ /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
+ case because relocations against this section may use the
+ dynamic symbol table, and in that case bfd_section_from_shdr
+ in elf.c does not update the RELOC_COUNT. */
+ if (asect->_raw_size == 0)
+ return true;
+
+ rel_hdr = &d->this_hdr;
+ reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize;
+ rel_hdr2 = NULL;
+ reloc_count2 = 0;
+ }
+
+ relents = ((arelent *)
+ bfd_alloc (abfd,
+ (reloc_count + reloc_count2) * sizeof (arelent)));
+ if (relents == NULL)
+ return false;
+
+ if (!elf_slurp_reloc_table_from_section (abfd, asect,
+ rel_hdr, reloc_count,
+ relents,
+ symbols, dynamic))
+ return false;
+
+ if (rel_hdr2
+ && !elf_slurp_reloc_table_from_section (abfd, asect,
+ rel_hdr2, reloc_count2,
+ relents + reloc_count,
+ symbols, dynamic))
+ return false;
+
+
+ asect->relocation = relents;
+ return true;
+}
+
#ifdef DEBUG
static void
elf_debug_section (num, hdr)
sizeof (Elf_External_Sym),
sizeof (Elf_External_Dyn),
sizeof (Elf_External_Note),
-
+ 4,
+ 1,
ARCH_SIZE, FILE_ALIGN,
ELFCLASS, EV_CURRENT,
- write_out_phdrs,
- write_shdrs_and_ehdr,
- write_relocs,
+ elf_write_out_phdrs,
+ elf_write_shdrs_and_ehdr,
+ elf_write_relocs,
elf_swap_symbol_out,
elf_slurp_reloc_table,
elf_slurp_symbol_table,
- elf_swap_dyn_in
+ elf_swap_dyn_in,
+ elf_swap_dyn_out,
+ NULL,
+ NULL,
+ NULL,
+ NULL
};
projects / deliverable / binutils-gdb.git / blobdiff