aboutsummaryrefslogtreecommitdiff
path: root/bfd/elfcode.h
diff options
context:
space:
mode:
Diffstat (limited to 'bfd/elfcode.h')
-rw-r--r--bfd/elfcode.h1452
1 files changed, 1452 insertions, 0 deletions
diff --git a/bfd/elfcode.h b/bfd/elfcode.h
new file mode 100644
index 0000000..22f6488
--- /dev/null
+++ b/bfd/elfcode.h
@@ -0,0 +1,1452 @@
+/* ELF executable support for BFD.
+ Copyright 1991, 92, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
+
+ Written by Fred Fish @ Cygnus Support, from information published
+ in "UNIX System V Release 4, Programmers Guide: ANSI C and
+ Programming Support Tools". Sufficient support for gdb.
+
+ Rewritten by Mark Eichin @ Cygnus Support, from information
+ published in "System V Application Binary Interface", chapters 4
+ and 5, as well as the various "Processor Supplement" documents
+ derived from it. Added support for assembler and other object file
+ utilities. Further work done by Ken Raeburn (Cygnus Support), Michael
+ Meissner (Open Software Foundation), and Peter Hoogenboom (University
+ of Utah) to finish and extend this.
+
+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 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. */
+
+/* Problems and other issues to resolve.
+
+ (1) BFD expects there to be some fixed number of "sections" in
+ the object file. I.E. there is a "section_count" variable in the
+ bfd structure which contains the number of sections. However, ELF
+ supports multiple "views" of a file. In particular, with current
+ implementations, executable files typically have two tables, a
+ program header table and a section header table, both of which
+ partition the executable.
+
+ In ELF-speak, the "linking view" of the file uses the section header
+ table to access "sections" within the file, and the "execution view"
+ uses the program header table to access "segments" within the file.
+ "Segments" typically may contain all the data from one or more
+ "sections".
+
+ Note that the section header table is optional in ELF executables,
+ but it is this information that is most useful to gdb. If the
+ section header table is missing, then gdb should probably try
+ to make do with the program header table. (FIXME)
+
+ (2) The code in this file is compiled twice, once in 32-bit mode and
+ once in 64-bit mode. More of it should be made size-independent
+ and moved into elf.c.
+
+ (3) ELF section symbols are handled rather sloppily now. This should
+ be cleaned up, and ELF section symbols reconciled with BFD section
+ symbols.
+
+ (4) We need a published spec for 64-bit ELF. We've got some stuff here
+ that we're using for SPARC V9 64-bit chips, but don't assume that
+ it's cast in stone.
+ */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+
+/* Renaming structures, typedefs, macros and functions to be size-specific. */
+#define Elf_External_Ehdr NAME(Elf,External_Ehdr)
+#define Elf_External_Sym NAME(Elf,External_Sym)
+#define Elf_External_Shdr NAME(Elf,External_Shdr)
+#define Elf_External_Phdr NAME(Elf,External_Phdr)
+#define Elf_External_Rel NAME(Elf,External_Rel)
+#define Elf_External_Rela NAME(Elf,External_Rela)
+#define Elf_External_Dyn NAME(Elf,External_Dyn)
+
+#define elf_core_file_failing_command NAME(bfd_elf,core_file_failing_command)
+#define elf_core_file_failing_signal NAME(bfd_elf,core_file_failing_signal)
+#define elf_core_file_matches_executable_p \
+ NAME(bfd_elf,core_file_matches_executable_p)
+#define elf_object_p NAME(bfd_elf,object_p)
+#define elf_core_file_p NAME(bfd_elf,core_file_p)
+#define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound)
+#define elf_get_dynamic_symtab_upper_bound \
+ NAME(bfd_elf,get_dynamic_symtab_upper_bound)
+#define elf_swap_reloc_in NAME(bfd_elf,swap_reloc_in)
+#define elf_swap_reloca_in NAME(bfd_elf,swap_reloca_in)
+#define elf_swap_reloc_out NAME(bfd_elf,swap_reloc_out)
+#define elf_swap_reloca_out NAME(bfd_elf,swap_reloca_out)
+#define elf_swap_symbol_in NAME(bfd_elf,swap_symbol_in)
+#define elf_swap_symbol_out NAME(bfd_elf,swap_symbol_out)
+#define elf_swap_phdr_in NAME(bfd_elf,swap_phdr_in)
+#define elf_swap_phdr_out NAME(bfd_elf,swap_phdr_out)
+#define elf_swap_dyn_in NAME(bfd_elf,swap_dyn_in)
+#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_make_empty_symbol NAME(bfd_elf,make_empty_symbol)
+#define elf_get_symbol_info NAME(bfd_elf,get_symbol_info)
+#define elf_get_lineno NAME(bfd_elf,get_lineno)
+#define elf_set_arch_mach NAME(bfd_elf,set_arch_mach)
+#define elf_find_nearest_line NAME(bfd_elf,find_nearest_line)
+#define elf_sizeof_headers NAME(bfd_elf,sizeof_headers)
+#define elf_set_section_contents NAME(bfd_elf,set_section_contents)
+#define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto)
+#define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel)
+#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_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)
+
+#if ARCH_SIZE == 64
+#define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y)
+#define ELF_R_SYM(X) ELF64_R_SYM(X)
+#define ELF_R_TYPE(X) ELF64_R_TYPE(X)
+#define ELFCLASS ELFCLASS64
+#define FILE_ALIGN 8
+#define LOG_FILE_ALIGN 3
+#endif
+#if ARCH_SIZE == 32
+#define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y)
+#define ELF_R_SYM(X) ELF32_R_SYM(X)
+#define ELF_R_TYPE(X) ELF32_R_TYPE(X)
+#define ELFCLASS ELFCLASS32
+#define FILE_ALIGN 4
+#define LOG_FILE_ALIGN 2
+#endif
+
+/* 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
+
+#define section_from_elf_index bfd_section_from_elf_index
+
+static boolean elf_slurp_reloc_table
+ PARAMS ((bfd *, asection *, asymbol **, boolean));
+
+static void write_relocs PARAMS ((bfd *, asection *, PTR));
+
+static boolean elf_file_p PARAMS ((Elf_External_Ehdr *));
+
+#ifdef DEBUG
+static void elf_debug_section PARAMS ((int, Elf_Internal_Shdr *));
+static void elf_debug_file PARAMS ((Elf_Internal_Ehdr *));
+static char *elf_symbol_flags PARAMS ((flagword));
+#endif
+
+/* Structure swapping routines */
+
+/* Should perhaps use put_offset, put_word, etc. For now, the two versions
+ 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
+ format. */
+
+void
+elf_swap_symbol_in (abfd, src, dst)
+ bfd *abfd;
+ const Elf_External_Sym *src;
+ Elf_Internal_Sym *dst;
+{
+ dst->st_name = bfd_h_get_32 (abfd, (bfd_byte *) src->st_name);
+ 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);
+ dst->st_shndx = bfd_h_get_16 (abfd, (bfd_byte *) src->st_shndx);
+}
+
+/* Translate an ELF symbol in internal format into an ELF symbol in external
+ format. */
+
+void
+elf_swap_symbol_out (abfd, src, cdst)
+ bfd *abfd;
+ const Elf_Internal_Sym *src;
+ PTR cdst;
+{
+ Elf_External_Sym *dst = (Elf_External_Sym *) cdst;
+ bfd_h_put_32 (abfd, src->st_name, dst->st_name);
+ put_word (abfd, src->st_value, dst->st_value);
+ put_word (abfd, src->st_size, dst->st_size);
+ bfd_h_put_8 (abfd, src->st_info, dst->st_info);
+ bfd_h_put_8 (abfd, src->st_other, dst->st_other);
+ bfd_h_put_16 (abfd, src->st_shndx, dst->st_shndx);
+}
+
+
+/* Translate an ELF file header in external format into an ELF file header in
+ internal format. */
+
+static void
+elf_swap_ehdr_in (abfd, src, dst)
+ bfd *abfd;
+ const Elf_External_Ehdr *src;
+ Elf_Internal_Ehdr *dst;
+{
+ 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);
+ 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);
+ dst->e_ehsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_ehsize);
+ dst->e_phentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phentsize);
+ dst->e_phnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phnum);
+ dst->e_shentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shentsize);
+ dst->e_shnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shnum);
+ dst->e_shstrndx = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shstrndx);
+}
+
+/* Translate an ELF file header in internal format into an ELF file header in
+ external format. */
+
+static void
+elf_swap_ehdr_out (abfd, src, dst)
+ bfd *abfd;
+ const Elf_Internal_Ehdr *src;
+ Elf_External_Ehdr *dst;
+{
+ 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);
+ 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);
+ bfd_h_put_16 (abfd, src->e_ehsize, dst->e_ehsize);
+ bfd_h_put_16 (abfd, src->e_phentsize, dst->e_phentsize);
+ bfd_h_put_16 (abfd, src->e_phnum, dst->e_phnum);
+ bfd_h_put_16 (abfd, src->e_shentsize, dst->e_shentsize);
+ bfd_h_put_16 (abfd, src->e_shnum, dst->e_shnum);
+ bfd_h_put_16 (abfd, src->e_shstrndx, dst->e_shstrndx);
+}
+
+
+/* Translate an ELF section header table entry in external format into an
+ ELF section header table entry in internal format. */
+
+static void
+elf_swap_shdr_in (abfd, src, dst)
+ bfd *abfd;
+ const Elf_External_Shdr *src;
+ Elf_Internal_Shdr *dst;
+{
+ 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);
+ 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);
+ dst->sh_info = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_info);
+ dst->sh_addralign = get_word (abfd, (bfd_byte *) src->sh_addralign);
+ dst->sh_entsize = get_word (abfd, (bfd_byte *) src->sh_entsize);
+ dst->bfd_section = NULL;
+ dst->contents = NULL;
+}
+
+/* Translate an ELF section header table entry in internal format into an
+ ELF section header table entry in external format. */
+
+static void
+elf_swap_shdr_out (abfd, src, dst)
+ bfd *abfd;
+ const Elf_Internal_Shdr *src;
+ Elf_External_Shdr *dst;
+{
+ /* note that all elements of dst are *arrays of unsigned char* already... */
+ bfd_h_put_32 (abfd, src->sh_name, dst->sh_name);
+ bfd_h_put_32 (abfd, src->sh_type, dst->sh_type);
+ put_word (abfd, src->sh_flags, dst->sh_flags);
+ put_word (abfd, src->sh_addr, dst->sh_addr);
+ put_word (abfd, src->sh_offset, dst->sh_offset);
+ put_word (abfd, src->sh_size, dst->sh_size);
+ bfd_h_put_32 (abfd, src->sh_link, dst->sh_link);
+ bfd_h_put_32 (abfd, src->sh_info, dst->sh_info);
+ put_word (abfd, src->sh_addralign, dst->sh_addralign);
+ put_word (abfd, src->sh_entsize, dst->sh_entsize);
+}
+
+
+/* Translate an ELF program header table entry in external format into an
+ ELF program header table entry in internal format. */
+
+void
+elf_swap_phdr_in (abfd, src, dst)
+ bfd *abfd;
+ const Elf_External_Phdr *src;
+ Elf_Internal_Phdr *dst;
+{
+ 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);
+ 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;
+ const Elf_Internal_Phdr *src;
+ Elf_External_Phdr *dst;
+{
+ /* note that all elements of dst are *arrays of unsigned char* already... */
+ bfd_h_put_32 (abfd, src->p_type, dst->p_type);
+ put_word (abfd, src->p_offset, dst->p_offset);
+ put_word (abfd, src->p_vaddr, dst->p_vaddr);
+ put_word (abfd, src->p_paddr, dst->p_paddr);
+ put_word (abfd, src->p_filesz, dst->p_filesz);
+ put_word (abfd, src->p_memsz, dst->p_memsz);
+ bfd_h_put_32 (abfd, src->p_flags, dst->p_flags);
+ put_word (abfd, src->p_align, dst->p_align);
+}
+
+/* Translate an ELF reloc from external format to internal format. */
+INLINE void
+elf_swap_reloc_in (abfd, src, dst)
+ bfd *abfd;
+ const Elf_External_Rel *src;
+ Elf_Internal_Rel *dst;
+{
+ dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset);
+ dst->r_info = get_word (abfd, (bfd_byte *) src->r_info);
+}
+
+INLINE void
+elf_swap_reloca_in (abfd, src, dst)
+ bfd *abfd;
+ 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_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;
+ const Elf_Internal_Rel *src;
+ Elf_External_Rel *dst;
+{
+ put_word (abfd, src->r_offset, dst->r_offset);
+ put_word (abfd, src->r_info, dst->r_info);
+}
+
+INLINE void
+elf_swap_reloca_out (abfd, src, dst)
+ bfd *abfd;
+ 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_signed_word (abfd, src->r_addend, dst->r_addend);
+}
+
+INLINE void
+elf_swap_dyn_in (abfd, p, dst)
+ bfd *abfd;
+ const PTR p;
+ Elf_Internal_Dyn *dst;
+{
+ const Elf_External_Dyn *src = (const Elf_External_Dyn *) p;
+
+ dst->d_tag = get_word (abfd, src->d_tag);
+ dst->d_un.d_val = get_word (abfd, src->d_un.d_val);
+}
+
+INLINE void
+elf_swap_dyn_out (abfd, src, dst)
+ bfd *abfd;
+ const Elf_Internal_Dyn *src;
+ Elf_External_Dyn *dst;
+{
+ put_word (abfd, src->d_tag, dst->d_tag);
+ put_word (abfd, src->d_un.d_val, dst->d_un.d_val);
+}
+
+/* ELF .o/exec file reading */
+
+
+/* Begin processing a given object.
+
+ First we validate the file by reading in the ELF header and checking
+ the magic number. */
+
+static INLINE boolean
+elf_file_p (x_ehdrp)
+ Elf_External_Ehdr *x_ehdrp;
+{
+ return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0)
+ && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1)
+ && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2)
+ && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3));
+}
+
+/* Check to see if the file associated with ABFD matches the target vector
+ that ABFD points to.
+
+ Note that we may be called several times with the same ABFD, but different
+ target vectors, most of which will not match. We have to avoid leaving
+ any side effects in ABFD, or any data it points to (like tdata), if the
+ file does not match the target vector. */
+
+const bfd_target *
+elf_object_p (abfd)
+ bfd *abfd;
+{
+ Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_External_Shdr x_shdr; /* Section header table entry, external form */
+ Elf_Internal_Shdr *i_shdrp = NULL; /* Section header table, internal form */
+ unsigned int shindex;
+ char *shstrtab; /* Internal copy of section header stringtab */
+ 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. */
+
+ if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ goto got_wrong_format_error;
+ else
+ goto got_no_match;
+ }
+
+ /* Now check to see if we have a valid ELF file, and one that BFD can
+ make use of. The magic number must match, the address size ('class')
+ and byte-swapping must match our XVEC entry, and it must have a
+ section header table (FIXME: See comments re sections at top of this
+ file). */
+
+ if ((elf_file_p (&x_ehdr) == false) ||
+ (x_ehdr.e_ident[EI_VERSION] != EV_CURRENT) ||
+ (x_ehdr.e_ident[EI_CLASS] != ELFCLASS))
+ goto got_wrong_format_error;
+
+ /* Check that file's byte order matches xvec's */
+ switch (x_ehdr.e_ident[EI_DATA])
+ {
+ case ELFDATA2MSB: /* Big-endian */
+ if (! bfd_header_big_endian (abfd))
+ goto got_wrong_format_error;
+ break;
+ case ELFDATA2LSB: /* Little-endian */
+ if (! bfd_header_little_endian (abfd))
+ goto got_wrong_format_error;
+ break;
+ case ELFDATANONE: /* No data encoding specified */
+ default: /* Unknown data encoding specified */
+ goto got_wrong_format_error;
+ }
+
+ /* Allocate an instance of the elf_obj_tdata structure and hook it up to
+ the tdata pointer in the bfd. */
+
+ new_tdata = ((struct elf_obj_tdata *)
+ bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)));
+ if (new_tdata == NULL)
+ goto got_no_match;
+ elf_tdata (abfd) = new_tdata;
+
+ /* Now that we know the byte order, swap in the rest of the header */
+ i_ehdrp = elf_elfheader (abfd);
+ elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
+#if DEBUG & 1
+ 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;
+
+ /* As a simple sanity check, verify that the what BFD thinks is the
+ size of each section header table entry actually matches the size
+ recorded in the file. */
+ if (i_ehdrp->e_shentsize != sizeof (x_shdr))
+ goto got_wrong_format_error;
+
+ ebd = get_elf_backend_data (abfd);
+
+ /* Check that the ELF e_machine field matches what this particular
+ BFD format expects. */
+ if (ebd->elf_machine_code != i_ehdrp->e_machine
+ && (ebd->elf_machine_alt1 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt1)
+ && (ebd->elf_machine_alt2 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt2))
+ {
+ const bfd_target * const *target_ptr;
+
+ if (ebd->elf_machine_code != EM_NONE)
+ goto got_wrong_format_error;
+
+ /* This is the generic ELF target. Let it match any ELF target
+ for which we do not have a specific backend. */
+ for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
+ {
+ struct elf_backend_data *back;
+
+ 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
+ || (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. */
+ goto got_wrong_format_error;
+ }
+ }
+ }
+
+ if (i_ehdrp->e_type == ET_EXEC)
+ abfd->flags |= EXEC_P;
+ else if (i_ehdrp->e_type == ET_DYN)
+ abfd->flags |= DYNAMIC;
+
+ if (i_ehdrp->e_phnum > 0)
+ abfd->flags |= D_PAGED;
+
+ if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0))
+ {
+ /* 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;
+
+ /* Allocate space for a copy of the section header table in
+ internal form, seek to the section header table in the file,
+ read it in, and convert it to internal form. */
+ i_shdrp = ((Elf_Internal_Shdr *)
+ bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdrp->e_shnum));
+ elf_elfsections (abfd) = ((Elf_Internal_Shdr **)
+ bfd_alloc (abfd,
+ sizeof (i_shdrp) * i_ehdrp->e_shnum));
+ if (!i_shdrp || !elf_elfsections (abfd))
+ goto got_no_match;
+ if (bfd_seek (abfd, i_ehdrp->e_shoff, SEEK_SET) != 0)
+ goto got_no_match;
+ for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++)
+ {
+ if (bfd_read ((PTR) & x_shdr, sizeof x_shdr, 1, abfd) != sizeof (x_shdr))
+ 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)
+ {
+ if (! bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx))
+ goto got_no_match;
+ }
+
+ /* Read in the program headers. */
+ if (i_ehdrp->e_phnum == 0)
+ elf_tdata (abfd)->phdr = NULL;
+ else
+ {
+ Elf_Internal_Phdr *i_phdr;
+ unsigned int i;
+
+ elf_tdata (abfd)->phdr = ((Elf_Internal_Phdr *)
+ bfd_alloc (abfd,
+ (i_ehdrp->e_phnum
+ * sizeof (Elf_Internal_Phdr))));
+ if (elf_tdata (abfd)->phdr == NULL)
+ goto got_no_match;
+ if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) != 0)
+ goto got_no_match;
+ i_phdr = elf_tdata (abfd)->phdr;
+ for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++)
+ {
+ Elf_External_Phdr x_phdr;
+
+ if (bfd_read ((PTR) &x_phdr, sizeof x_phdr, 1, abfd)
+ != sizeof x_phdr)
+ goto got_no_match;
+ elf_swap_phdr_in (abfd, &x_phdr, i_phdr);
+ }
+ }
+
+ /* Read in the string table containing the names of the sections. We
+ will need the base pointer to this table later. */
+ /* We read this inline now, so that we don't have to go through
+ bfd_section_from_shdr with it (since this particular strtab is
+ used to find all of the ELF section names.) */
+
+ shstrtab = bfd_elf_get_str_section (abfd, i_ehdrp->e_shstrndx);
+ if (!shstrtab)
+ goto got_no_match;
+
+ /* Once all of the section headers have been read and converted, we
+ can start processing them. Note that the first section header is
+ a dummy placeholder entry, so we ignore it. */
+
+ for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
+ {
+ if (! bfd_section_from_shdr (abfd, shindex))
+ goto got_no_match;
+ }
+
+ /* Let the backend double check the format and override global
+ information. */
+ if (ebd->elf_backend_object_p)
+ {
+ if ((*ebd->elf_backend_object_p) (abfd) == false)
+ 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:
+ bfd_set_error (bfd_error_wrong_format);
+ got_no_match:
+ if (new_tdata != NULL
+ && new_tdata->elf_sect_ptr != NULL)
+ bfd_release (abfd, new_tdata->elf_sect_ptr);
+ if (i_shdrp != NULL)
+ bfd_release (abfd, i_shdrp);
+ if (new_tdata != NULL)
+ bfd_release (abfd, new_tdata);
+ elf_tdata (abfd) = preserved_tdata;
+ return (NULL);
+}
+
+/* ELF .o/exec file writing */
+
+/* Write out the relocs. */
+
+static void
+write_relocs (abfd, sec, data)
+ bfd *abfd;
+ asection *sec;
+ PTR data;
+{
+ boolean *failedp = (boolean *) data;
+ Elf_Internal_Shdr *rela_hdr;
+ 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;
+ asymbol *last_sym = 0;
+ int last_sym_idx = 0;
+
+ /* If we have already failed, don't do anything. */
+ if (*failedp)
+ return;
+
+ if ((sec->flags & SEC_RELOC) == 0)
+ return;
+
+ /* The linker backend writes the relocs out itself, and sets the
+ reloc_count field to zero to inhibit writing them here. Also,
+ sometimes the SEC_RELOC flag gets set even when there aren't any
+ relocs. */
+ if (sec->reloc_count == 0)
+ return;
+
+ rela_hdr = &elf_section_data (sec)->rel_hdr;
+
+ rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count;
+ rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size);
+ if (rela_hdr->contents == NULL)
+ {
+ *failedp = true;
+ return;
+ }
+
+ /* orelocation has the data, reloc_count has the count... */
+ if (use_rela_p)
+ {
+ outbound_relocas = (Elf_External_Rela *) rela_hdr->contents;
+
+ for (idx = 0; idx < sec->reloc_count; idx++)
+ {
+ Elf_Internal_Rela dst_rela;
+ Elf_External_Rela *src_rela;
+ arelent *ptr;
+ asymbol *sym;
+ int n;
+
+ ptr = sec->orelocation[idx];
+ src_rela = outbound_relocas + idx;
+
+ /* 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)
+ dst_rela.r_offset = ptr->address;
+ else
+ dst_rela.r_offset = ptr->address + sec->vma;
+
+ 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;
+ 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;
+ elf_swap_reloca_out (abfd, &dst_rela, src_rela);
+ }
+ }
+ else
+ /* REL relocations */
+ {
+ outbound_relocs = (Elf_External_Rel *) rela_hdr->contents;
+
+ for (idx = 0; idx < sec->reloc_count; idx++)
+ {
+ Elf_Internal_Rel dst_rel;
+ Elf_External_Rel *src_rel;
+ arelent *ptr;
+ int n;
+ asymbol *sym;
+
+ ptr = sec->orelocation[idx];
+ sym = *ptr->sym_ptr_ptr;
+ src_rel = outbound_relocs + idx;
+
+ /* 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)
+ dst_rel.r_offset = ptr->address;
+ else
+ dst_rel.r_offset = ptr->address + sec->vma;
+
+ if (sym == last_sym)
+ n = last_sym_idx;
+ else
+ {
+ last_sym = 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->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);
+ }
+ }
+}
+
+/* Write out the program headers. */
+
+int
+elf_write_out_phdrs (abfd, phdr, count)
+ bfd *abfd;
+ const Elf_Internal_Phdr *phdr;
+ int count;
+{
+ while (count--)
+ {
+ Elf_External_Phdr extphdr;
+ elf_swap_phdr_out (abfd, phdr, &extphdr);
+ if (bfd_write (&extphdr, sizeof (Elf_External_Phdr), 1, abfd)
+ != sizeof (Elf_External_Phdr))
+ return -1;
+ phdr++;
+ }
+ return 0;
+}
+
+/* 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 */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_External_Shdr *x_shdrp; /* Section header table, external form */
+ Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
+ unsigned int count;
+
+ i_ehdrp = elf_elfheader (abfd);
+ i_shdrp = elf_elfsections (abfd);
+
+ /* swap the header before spitting it out... */
+
+#if DEBUG & 1
+ elf_debug_file (i_ehdrp);
+#endif
+ elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr);
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
+ || (bfd_write ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd)
+ != sizeof (x_ehdr)))
+ return false;
+
+ /* at this point we've concocted all the ELF sections... */
+ x_shdrp = (Elf_External_Shdr *)
+ bfd_alloc (abfd, sizeof (*x_shdrp) * (i_ehdrp->e_shnum));
+ if (!x_shdrp)
+ return false;
+
+ for (count = 0; count < i_ehdrp->e_shnum; count++)
+ {
+#if DEBUG & 2
+ elf_debug_section (count, i_shdrp[count]);
+#endif
+ elf_swap_shdr_out (abfd, i_shdrp[count], x_shdrp + count);
+ }
+ if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0
+ || (bfd_write ((PTR) x_shdrp, sizeof (*x_shdrp), i_ehdrp->e_shnum, abfd)
+ != sizeof (*x_shdrp) * i_ehdrp->e_shnum))
+ return false;
+
+ /* need to dump the string table too... */
+
+ return true;
+}
+
+long
+elf_slurp_symbol_table (abfd, symptrs, dynamic)
+ bfd *abfd;
+ asymbol **symptrs; /* Buffer for generated bfd symbols */
+ boolean dynamic;
+{
+ Elf_Internal_Shdr *hdr;
+ 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
+ canonical bfd symbol table entry.
+
+ Note that we allocate the initial bfd canonical symbol buffer
+ based on a one-to-one mapping of the ELF symbols to canonical
+ symbols. We actually use all the ELF symbols, so there will be no
+ 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)->symtab_hdr;
+ verhdr = NULL;
+ }
+ else
+ {
+ 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;
+
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+
+ if (symcount == 0)
+ sym = symbase = NULL;
+ else
+ {
+ unsigned long i;
+
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
+ return -1;
+
+ symbase = ((elf_symbol_type *)
+ bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type)));
+ if (symbase == (elf_symbol_type *) NULL)
+ return -1;
+ sym = symbase;
+
+ /* Temporarily allocate room for the raw ELF symbols. */
+ x_symp = ((Elf_External_Sym *)
+ bfd_malloc (symcount * sizeof (Elf_External_Sym)));
+ if (x_symp == NULL && symcount != 0)
+ goto error_return;
+
+ 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++)
+ {
+ elf_swap_symbol_in (abfd, x_symp + i, &i_sym);
+ memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym));
+#ifdef ELF_KEEP_EXTSYM
+ memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym));
+#endif
+ sym->symbol.the_bfd = abfd;
+
+ sym->symbol.name = bfd_elf_string_from_elf_section (abfd,
+ hdr->sh_link,
+ i_sym.st_name);
+
+ sym->symbol.value = i_sym.st_value;
+
+ if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERVE)
+ {
+ sym->symbol.section = section_from_elf_index (abfd,
+ i_sym.st_shndx);
+ if (sym->symbol.section == NULL)
+ {
+ /* This symbol is in a section for which we did not
+ create a BFD section. Just use bfd_abs_section,
+ although it is wrong. FIXME. */
+ sym->symbol.section = bfd_abs_section_ptr;
+ }
+ }
+ else if (i_sym.st_shndx == SHN_ABS)
+ {
+ sym->symbol.section = bfd_abs_section_ptr;
+ }
+ else if (i_sym.st_shndx == SHN_COMMON)
+ {
+ sym->symbol.section = bfd_com_section_ptr;
+ /* Elf puts the alignment into the `value' field, and
+ the size into the `size' field. BFD wants to see the
+ size in the value field, and doesn't care (at the
+ moment) about the alignment. */
+ sym->symbol.value = i_sym.st_size;
+ }
+ else if (i_sym.st_shndx == SHN_UNDEF)
+ {
+ sym->symbol.section = bfd_und_section_ptr;
+ }
+ else
+ sym->symbol.section = bfd_abs_section_ptr;
+
+ /* 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 STB_LOCAL:
+ sym->symbol.flags |= BSF_LOCAL;
+ break;
+ case STB_GLOBAL:
+ if (i_sym.st_shndx != SHN_UNDEF
+ && i_sym.st_shndx != SHN_COMMON)
+ sym->symbol.flags |= BSF_GLOBAL;
+ break;
+ case STB_WEAK:
+ sym->symbol.flags |= BSF_WEAK;
+ break;
+ }
+
+ switch (ELF_ST_TYPE (i_sym.st_info))
+ {
+ case STT_SECTION:
+ sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING;
+ break;
+ case STT_FILE:
+ sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING;
+ break;
+ 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);
+ if (ebd->elf_backend_symbol_processing)
+ (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol);
+ }
+
+ sym++;
+ }
+ }
+
+ /* Do some backend-specific processing on this symbol table. */
+ {
+ struct elf_backend_data *ebd = get_elf_backend_data (abfd);
+ if (ebd->elf_backend_symbol_table_processing)
+ (*ebd->elf_backend_symbol_table_processing) (abfd, symbase, symcount);
+ }
+
+ /* We rely on the zalloc to clear out the final symbol entry. */
+
+ symcount = sym - symbase;
+
+ /* Fill in the user's symbol pointer vector if needed. */
+ if (symptrs)
+ {
+ long l = symcount;
+
+ sym = symbase;
+ while (l-- > 0)
+ {
+ *symptrs++ = &sym->symbol;
+ sym++;
+ }
+ *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. */
+
+static boolean
+elf_slurp_reloc_table (abfd, asect, symbols, dynamic)
+ bfd *abfd;
+ asection *asect;
+ 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);
+ Elf_Internal_Shdr *rel_hdr;
+ bfd_size_type reloc_count;
+ PTR allocated = NULL;
+ bfd_byte *native_relocs;
+ arelent *relents;
+ arelent *relent;
+ unsigned int i;
+ int entsize;
+
+ 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 = asect->reloc_count;
+
+ BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
+ && reloc_count == rel_hdr->sh_size / rel_hdr->sh_entsize);
+ }
+ else
+ {
+ if (asect->_raw_size == 0)
+ return true;
+
+ rel_hdr = &d->this_hdr;
+ reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize;
+ }
+
+ allocated = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size);
+ if (allocated == NULL)
+ goto error_return;
+
+ 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, reloc_count * sizeof (arelent));
+ if (relents == NULL)
+ goto error_return;
+
+ entsize = rel_hdr->sh_entsize;
+ BFD_ASSERT (entsize == sizeof (Elf_External_Rel)
+ || entsize == sizeof (Elf_External_Rela));
+
+ for (i = 0, relent = relents;
+ i < reloc_count;
+ i++, relent++, native_relocs += entsize)
+ {
+ Elf_Internal_Rela rela;
+ Elf_Internal_Rel rel;
+
+ if (entsize == sizeof (Elf_External_Rela))
+ elf_swap_reloca_in (abfd, (Elf_External_Rela *) native_relocs, &rela);
+ else
+ {
+ elf_swap_reloc_in (abfd, (Elf_External_Rel *) native_relocs, &rel);
+ rela.r_offset = rel.r_offset;
+ rela.r_info = rel.r_info;
+ rela.r_addend = 0;
+ }
+
+ /* 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 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;
+
+ if (ELF_R_SYM (rela.r_info) == 0)
+ relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ else
+ {
+ asymbol **ps, *s;
+
+ ps = symbols + ELF_R_SYM (rela.r_info) - 1;
+ s = *ps;
+
+ /* Canonicalize ELF section symbols. FIXME: Why? */
+ if ((s->flags & BSF_SECTION_SYM) == 0)
+ relent->sym_ptr_ptr = ps;
+ else
+ relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
+ }
+
+ relent->addend = rela.r_addend;
+
+ if (entsize == sizeof (Elf_External_Rela))
+ (*ebd->elf_info_to_howto) (abfd, relent, &rela);
+ else
+ (*ebd->elf_info_to_howto_rel) (abfd, relent, &rel);
+ }
+
+ asect->relocation = relents;
+
+ if (allocated != NULL)
+ free (allocated);
+
+ return true;
+
+ error_return:
+ if (allocated != NULL)
+ free (allocated);
+ return false;
+}
+
+#ifdef DEBUG
+static void
+elf_debug_section (num, hdr)
+ int num;
+ Elf_Internal_Shdr *hdr;
+{
+ fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num,
+ hdr->bfd_section != NULL ? hdr->bfd_section->name : "",
+ (long) hdr);
+ fprintf (stderr,
+ "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n",
+ (long) hdr->sh_name,
+ (long) hdr->sh_type,
+ (long) hdr->sh_flags);
+ fprintf (stderr,
+ "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n",
+ (long) hdr->sh_addr,
+ (long) hdr->sh_offset,
+ (long) hdr->sh_size);
+ fprintf (stderr,
+ "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n",
+ (long) hdr->sh_link,
+ (long) hdr->sh_info,
+ (long) hdr->sh_addralign);
+ fprintf (stderr, "sh_entsize = %ld\n",
+ (long) hdr->sh_entsize);
+ fflush (stderr);
+}
+
+static void
+elf_debug_file (ehdrp)
+ Elf_Internal_Ehdr *ehdrp;
+{
+ fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry);
+ fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff);
+ fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum);
+ fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize);
+ fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff);
+ fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum);
+ fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize);
+}
+
+static char *
+elf_symbol_flags (flags)
+ flagword flags;
+{
+ static char buffer[1024];
+
+ buffer[0] = '\0';
+ if (flags & BSF_LOCAL)
+ strcat (buffer, " local");
+
+ if (flags & BSF_GLOBAL)
+ strcat (buffer, " global");
+
+ if (flags & BSF_DEBUGGING)
+ strcat (buffer, " debug");
+
+ if (flags & BSF_FUNCTION)
+ strcat (buffer, " function");
+
+ if (flags & BSF_KEEP)
+ strcat (buffer, " keep");
+
+ if (flags & BSF_KEEP_G)
+ strcat (buffer, " keep_g");
+
+ if (flags & BSF_WEAK)
+ strcat (buffer, " weak");
+
+ if (flags & BSF_SECTION_SYM)
+ strcat (buffer, " section-sym");
+
+ if (flags & BSF_OLD_COMMON)
+ strcat (buffer, " old-common");
+
+ if (flags & BSF_NOT_AT_END)
+ strcat (buffer, " not-at-end");
+
+ if (flags & BSF_CONSTRUCTOR)
+ strcat (buffer, " constructor");
+
+ if (flags & BSF_WARNING)
+ strcat (buffer, " warning");
+
+ if (flags & BSF_INDIRECT)
+ strcat (buffer, " indirect");
+
+ if (flags & BSF_FILE)
+ strcat (buffer, " file");
+
+ if (flags & DYNAMIC)
+ strcat (buffer, " dynamic");
+
+ if (flags & ~(BSF_LOCAL
+ | BSF_GLOBAL
+ | BSF_DEBUGGING
+ | BSF_FUNCTION
+ | BSF_KEEP
+ | BSF_KEEP_G
+ | BSF_WEAK
+ | BSF_SECTION_SYM
+ | BSF_OLD_COMMON
+ | BSF_NOT_AT_END
+ | BSF_CONSTRUCTOR
+ | BSF_WARNING
+ | BSF_INDIRECT
+ | BSF_FILE
+ | BSF_DYNAMIC))
+ strcat (buffer, " unknown-bits");
+
+ return buffer;
+}
+#endif
+
+#include "elfcore.h"
+#include "elflink.h"
+
+/* Size-dependent data and functions. */
+const struct elf_size_info NAME(_bfd_elf,size_info) = {
+ sizeof (Elf_External_Ehdr),
+ sizeof (Elf_External_Phdr),
+ sizeof (Elf_External_Shdr),
+ sizeof (Elf_External_Rel),
+ sizeof (Elf_External_Rela),
+ sizeof (Elf_External_Sym),
+ sizeof (Elf_External_Dyn),
+ sizeof (Elf_External_Note),
+
+ ARCH_SIZE, FILE_ALIGN,
+ ELFCLASS, EV_CURRENT,
+ elf_write_out_phdrs,
+ elf_write_shdrs_and_ehdr,
+ write_relocs,
+ elf_swap_symbol_out,
+ elf_slurp_reloc_table,
+ elf_slurp_symbol_table,
+ elf_swap_dyn_in
+};