32bit gdbserver-xen/libxc to debug 64bit guest
PATCH 2/2 32bit gdbserver-xen/libxc to debug 64bit guest
part 2 : new files in gdbserver xen-sparse tree.
tools/debugger/gdb/gdb-6.2.1-xen-sparse/bfd/elf.c +888 -0
@@ -0,0 +1,7719 @@ +/* ELF executable support for BFD. + +Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, +2002, 2003, 2004 Free Software Foundation, Inc. + +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. */ + +/* SECTION + +ELF backends + +BFD support for ELF formats is being worked on. +Currently, the best supported back ends are for sparc and i386 +(running svr4 or Solaris 2). + +Documentation of the internals of the support code still needs +to be written. The code is changing quickly enough that we +haven't bothered yet. */ + +/* For sparc64-cross-sparc32. */ +#define _SYSCALL32 +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" +#include "libbfd.h" +#define ARCH_SIZE 0 +#include "elf-bfd.h" +#include "libiberty.h" + +static int elf_sort_sections (const void *,const void *); +static bfd_boolean assign_file_positions_except_relocs (bfd *,struct bfd_link_info *); +static bfd_boolean prep_headers (bfd *); +static bfd_boolean swap_out_syms (bfd *,struct bfd_strtab_hash **,int ) ; +static bfd_boolean elfcore_read_notes (bfd *,file_ptr ,bfd_size_type ) ; + +/* Swap version information in and out. The version information is +currently size independent. If that ever changes, this code will +need to move into elfcode.h. */ + +/* Swap in a Verdef structure. */ + +void +_bfd_elf_swap_verdef_in (bfd *abfd, +const Elf_External_Verdef *src, +Elf_Internal_Verdef *dst) +{ + dst->vd_version =H_GET_16 (abfd, src->vd_version); + dst->vd_flags =H_GET_16 (abfd, src->vd_flags); + dst->vd_ndx =H_GET_16 (abfd, src->vd_ndx); + dst->vd_cnt =H_GET_16 (abfd, src->vd_cnt); + dst->vd_hash =H_GET_32 (abfd, src->vd_hash); + dst->vd_aux =H_GET_32 (abfd, src->vd_aux); + dst->vd_next =H_GET_32 (abfd, src->vd_next); +} + +/* Swap out a Verdef structure. */ + +void +_bfd_elf_swap_verdef_out (bfd *abfd, +const Elf_Internal_Verdef *src, +Elf_External_Verdef *dst) +{ +H_PUT_16 (abfd, src->vd_version, dst->vd_version); +H_PUT_16 (abfd, src->vd_flags, dst->vd_flags); +H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx); +H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt); +H_PUT_32 (abfd, src->vd_hash, dst->vd_hash); +H_PUT_32 (abfd, src->vd_aux, dst->vd_aux); +H_PUT_32 (abfd, src->vd_next, dst->vd_next); +} + +/* Swap in a Verdaux structure. */ + +void +_bfd_elf_swap_verdaux_in (bfd *abfd, +const Elf_External_Verdaux *src, +Elf_Internal_Verdaux *dst) +{ + dst->vda_name =H_GET_32 (abfd, src->vda_name); + dst->vda_next =H_GET_32 (abfd, src->vda_next); +} + +/* Swap out a Verdaux structure. */ + +void +_bfd_elf_swap_verdaux_out (bfd *abfd, +const Elf_Internal_Verdaux *src, +Elf_External_Verdaux *dst) +{ +H_PUT_32 (abfd, src->vda_name, dst->vda_name); +H_PUT_32 (abfd, src->vda_next, dst->vda_next); +} + +/* Swap in a Verneed structure. */ + +void +_bfd_elf_swap_verneed_in (bfd *abfd, +const Elf_External_Verneed *src, +Elf_Internal_Verneed *dst) +{ + dst->vn_version =H_GET_16 (abfd, src->vn_version); + dst->vn_cnt =H_GET_16 (abfd, src->vn_cnt); + dst->vn_file =H_GET_32 (abfd, src->vn_file); + dst->vn_aux =H_GET_32 (abfd, src->vn_aux); + dst->vn_next =H_GET_32 (abfd, src->vn_next); +} + +/* Swap out a Verneed structure. */ + +void +_bfd_elf_swap_verneed_out (bfd *abfd, +const Elf_Internal_Verneed *src, +Elf_External_Verneed *dst) +{ +H_PUT_16 (abfd, src->vn_version, dst->vn_version); +H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt); +H_PUT_32 (abfd, src->vn_file, dst->vn_file); +H_PUT_32 (abfd, src->vn_aux, dst->vn_aux); +H_PUT_32 (abfd, src->vn_next, dst->vn_next); +} + +/* Swap in a Vernaux structure. */ + +void +_bfd_elf_swap_vernaux_in (bfd *abfd, +const Elf_External_Vernaux *src, +Elf_Internal_Vernaux *dst) +{ + dst->vna_hash =H_GET_32 (abfd, src->vna_hash); + dst->vna_flags =H_GET_16 (abfd, src->vna_flags); + dst->vna_other =H_GET_16 (abfd, src->vna_other); + dst->vna_name =H_GET_32 (abfd, src->vna_name); + dst->vna_next =H_GET_32 (abfd, src->vna_next); +} + +/* Swap out a Vernaux structure. */ + +void +_bfd_elf_swap_vernaux_out (bfd *abfd, +const Elf_Internal_Vernaux *src, +Elf_External_Vernaux *dst) +{ +H_PUT_32 (abfd, src->vna_hash, dst->vna_hash); +H_PUT_16 (abfd, src->vna_flags, dst->vna_flags); +H_PUT_16 (abfd, src->vna_other, dst->vna_other); +H_PUT_32 (abfd, src->vna_name, dst->vna_name); +H_PUT_32 (abfd, src->vna_next, dst->vna_next); +} + +/* Swap in a Versym structure. */ + +void +_bfd_elf_swap_versym_in (bfd *abfd, +const Elf_External_Versym *src, +Elf_Internal_Versym *dst) +{ + dst->vs_vers =H_GET_16 (abfd, src->vs_vers); +} + +/* Swap out a Versym structure. */ + +void +_bfd_elf_swap_versym_out (bfd *abfd, +const Elf_Internal_Versym *src, +Elf_External_Versym *dst) +{ +H_PUT_16 (abfd, src->vs_vers, dst->vs_vers); +} + +/* Standard ELF hash function. Do not change this function; you will +cause invalid hash tables to be generated. */ + +unsigned long +bfd_elf_hash (const char *namearg) +{ +const unsigned char *name = (const unsigned char *) namearg; +unsigned long h =0 ; +unsigned long g; +int ch; + +while ((ch = *name++) !='\0' ) + { + h = (h <<4 ) + ch; +if ((g = (h &0xf0000000 )) !=0 ) + { + h ^= g >>24 ; +/* The ELF ABI says `h &= ~g', but this is equivalent in +this case and on some machines one insn instead of two. */ + h ^= g; + } + } +return h &0xffffffff ; +} + +/* Read a specified number of bytes at a specified offset in an ELF +file, into a newly allocated buffer, and return a pointer to the +buffer. */ + +static char * +elf_read (bfd *abfd,file_ptr offset,bfd_size_type size) +{ +char *buf; + +if ((buf =bfd_alloc (abfd, size)) ==NULL ) +return NULL ; +if (bfd_seek (abfd, offset,SEEK_SET ) !=0 ) +return NULL ; +if (bfd_bread (buf, size, abfd) != size) + { +if (bfd_get_error () != bfd_error_system_call) +bfd_set_error (bfd_error_file_truncated); +return NULL ; + } +return buf; +} + +bfd_boolean +bfd_elf_mkobject (bfd *abfd) +{ +/* This just does initialization. */ +/* coff_mkobject zalloc's space for tdata.coff_obj_data ... */ +elf_tdata (abfd) =bfd_zalloc (abfd,sizeof (struct elf_obj_tdata )); +if (elf_tdata (abfd) ==0 ) +return FALSE; +/* Since everything is done at close time, do we need any +initialization? */ + +return TRUE; +} + +bfd_boolean +bfd_elf_mkcorefile (bfd *abfd) +{ +/* I think this can be done just like an object file. */ +return bfd_elf_mkobject (abfd); +} + +char * +bfd_elf_get_str_section (bfd *abfd,unsigned int shindex) +{ +Elf_Internal_Shdr **i_shdrp; +char *shstrtab =NULL ; +file_ptr offset; +bfd_size_type shstrtabsize; + + i_shdrp =elf_elfsections (abfd); +if (i_shdrp ==0 || i_shdrp[shindex] ==0 ) +return 0 ; + + shstrtab = (char *) i_shdrp[shindex]->contents; +if (shstrtab ==NULL ) + { +/* No cached one, attempt to read, and cache what we read. */ + offset = i_shdrp[shindex]->sh_offset; + shstrtabsize = i_shdrp[shindex]->sh_size; + shstrtab =elf_read (abfd, offset, shstrtabsize); + i_shdrp[shindex]->contents = shstrtab; + } +return shstrtab; +} + +char * +bfd_elf_string_from_elf_section (bfd *abfd, +unsigned int shindex, +unsigned int strindex) +{ +Elf_Internal_Shdr *hdr; + +if (strindex ==0 ) +return "" ; + + hdr =elf_elfsections (abfd)[shindex]; + +if (hdr->contents ==NULL + &&bfd_elf_get_str_section (abfd, shindex) ==NULL ) +return NULL ; + +if (strindex >= hdr->sh_size) + { + (*_bfd_error_handler) + (_ ("%s: invalid string offset %u >= %lu for section `%s'" ), +bfd_archive_filename (abfd), strindex, (unsigned long ) hdr->sh_size, + ((shindex ==elf_elfheader (abfd)->e_shstrndx + && strindex == hdr->sh_name) + ?".shstrtab" + :elf_string_from_elf_strtab (abfd, hdr->sh_name))); +return "" ; + } + +return ((char *) hdr->contents) + strindex; +} + +/* Read and convert symbols to internal format. +SYMCOUNT specifies the number of symbols to read, starting from +symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF +are non-NULL, they are used to store the internal symbols, external +symbols, and symbol section index extensions, respectively. */ + +Elf_Internal_Sym * +bfd_elf_get_elf_syms (bfd *ibfd, +Elf_Internal_Shdr *symtab_hdr, +size_t symcount, +size_t symoffset, +Elf_Internal_Sym *intsym_buf, +void *extsym_buf, +Elf_External_Sym_Shndx *extshndx_buf) +{ +Elf_Internal_Shdr *shndx_hdr; +void *alloc_ext; +const bfd_byte *esym; +Elf_External_Sym_Shndx *alloc_extshndx; +Elf_External_Sym_Shndx *shndx; +Elf_Internal_Sym *isym; +Elf_Internal_Sym *isymend; +const struct elf_backend_data *bed; +size_t extsym_size; +bfd_size_type amt; +file_ptr pos; + +if (symcount ==0 ) +return intsym_buf; + +/* Normal syms might have section extension entries. */ + shndx_hdr =NULL ; +if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr) + shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr; + +/* Read the symbols. */ + alloc_ext =NULL ; + alloc_extshndx =NULL ; + bed =get_elf_backend_data (ibfd); + extsym_size = bed->s->sizeof_sym; + amt = symcount * extsym_size; + pos = symtab_hdr->sh_offset + symoffset * extsym_size; +if (extsym_buf ==NULL ) + { + alloc_ext =bfd_malloc (amt); + extsym_buf = alloc_ext; + } +if (extsym_buf ==NULL + ||bfd_seek (ibfd, pos,SEEK_SET ) !=0 + ||bfd_bread (extsym_buf, amt, ibfd) != amt) + { + intsym_buf =NULL ; + goto out; + } + +if (shndx_hdr ==NULL || shndx_hdr->sh_size ==0 ) + extshndx_buf =NULL ; +else + { + amt = symcount *sizeof (Elf_External_Sym_Shndx); + pos = shndx_hdr->sh_offset + symoffset *sizeof (Elf_External_Sym_Shndx); +if (extshndx_buf ==NULL ) + { + alloc_extshndx =bfd_malloc (amt); + extshndx_buf = alloc_extshndx; + } +if (extshndx_buf ==NULL + ||bfd_seek (ibfd, pos,SEEK_SET ) !=0 + ||bfd_bread (extshndx_buf, amt, ibfd) != amt) + { + intsym_buf =NULL ; + goto out; + } + } + +if (intsym_buf ==NULL ) + { +bfd_size_type amt = symcount *sizeof (Elf_Internal_Sym); + intsym_buf =bfd_malloc (amt); +if (intsym_buf ==NULL ) + goto out; + } + +/* Convert the symbols to internal form. */ + isymend = intsym_buf + symcount; +for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf; + isym < isymend; + esym += extsym_size, isym++, shndx = shndx !=NULL ? shndx +1 :NULL ) + (*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym); + + out: +if (alloc_ext !=NULL ) +free (alloc_ext); +if (alloc_extshndx !=NULL ) +free (alloc_extshndx); + +return intsym_buf; +} + +/* Look up a symbol name. */ +const char * +bfd_elf_local_sym_name (bfd *abfd,Elf_Internal_Sym *isym) +{ +unsigned int iname = isym->st_name; +unsigned int shindex =elf_tdata (abfd)->symtab_hdr.sh_link; +if (iname ==0 &&ELF_ST_TYPE (isym->st_info) ==STT_SECTION ) + { + iname =elf_elfsections (abfd)[isym->st_shndx]->sh_name; + shindex =elf_elfheader (abfd)->e_shstrndx; + } + +return bfd_elf_string_from_elf_section (abfd, shindex, iname); +} + +/* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP +sections. The first element is the flags, the rest are section +pointers. */ + +typedef union elf_internal_group { +Elf_Internal_Shdr *shdr; +unsigned int flags; +}Elf_Internal_Group ; + +/* Return the name of the group signature symbol. Why isn't the +signature just a string? */ + +static const char * +group_signature (bfd *abfd,Elf_Internal_Shdr *ghdr) +{ +Elf_Internal_Shdr *hdr; +unsigned char esym[sizeof (Elf64_External_Sym)]; +Elf_External_Sym_Shndx eshndx; +Elf_Internal_Sym isym; + +/* First we need to ensure the symbol table is available. */ +if (!bfd_section_from_shdr (abfd, ghdr->sh_link)) +return NULL ; + +/* Go read the symbol. */ + hdr = &elf_tdata (abfd)->symtab_hdr; +if (bfd_elf_get_elf_syms (abfd, hdr,1 , ghdr->sh_info, + &isym, esym, &eshndx) ==NULL ) +return NULL ; + +return bfd_elf_local_sym_name (abfd, &isym); +} + +/* Set next_in_group list pointer, and group name for NEWSECT. */ + +static bfd_boolean +setup_group (bfd *abfd,Elf_Internal_Shdr *hdr,asection *newsect) +{ +unsigned int num_group =elf_tdata (abfd)->num_group; + +/* If num_group is zero, read in all SHT_GROUP sections. The count +is set to -1 if there are no SHT_GROUP sections. */ +if (num_group ==0 ) + { +unsigned int i, shnum; + +/* First count the number of groups. If we have a SHT_GROUP +section with just a flag word (ie. sh_size is 4), ignore it. */ + shnum =elf_numsections (abfd); + num_group =0 ; +for (i =0 ; i < shnum; i++) + { +Elf_Internal_Shdr *shdr =elf_elfsections (abfd)[i]; +if (shdr->sh_type ==SHT_GROUP && shdr->sh_size >=8 ) + num_group +=1 ; + } + +if (num_group ==0 ) + num_group = (unsigned )-1 ; +elf_tdata (abfd)->num_group = num_group; + +if (num_group >0 ) + { +/* We keep a list of elf section headers for group sections, +so we can find them quickly. */ +bfd_size_type amt = num_group *sizeof (Elf_Internal_Shdr *); +elf_tdata (abfd)->group_sect_ptr =bfd_alloc (abfd, amt); +if (elf_tdata (abfd)->group_sect_ptr ==NULL ) +return FALSE; + + num_group =0 ; +for (i =0 ; i < shnum; i++) + { +Elf_Internal_Shdr *shdr =elf_elfsections (abfd)[i]; +if (shdr->sh_type ==SHT_GROUP && shdr->sh_size >=8 ) + { +unsigned char *src; +Elf_Internal_Group *dest; + +/* Add to list of sections. */ +elf_tdata (abfd)->group_sect_ptr[num_group] = shdr; + num_group +=1 ; + +/* Read the raw contents. */ +BFD_ASSERT (sizeof (*dest) >=4 ); + amt = shdr->sh_size *sizeof (*dest) /4 ; + shdr->contents =bfd_alloc (abfd, amt); +if (shdr->contents ==NULL + ||bfd_seek (abfd, shdr->sh_offset,SEEK_SET ) !=0 + || (bfd_bread (shdr->contents, shdr->sh_size, abfd) + != shdr->sh_size)) +return FALSE; + +/* Translate raw contents, a flag word followed by an +array of elf section indices all in target byte order, +to the flag word followed by an array of elf section +pointers. */ + src = shdr->contents + shdr->sh_size; + dest = (Elf_Internal_Group *) (shdr->contents + amt); +while (1 ) + { +unsigned int idx; + + src -=4 ; + --dest; + idx =H_GET_32 (abfd, src); +if (src == shdr->contents) + { + dest->flags = idx; +if (shdr->bfd_section !=NULL && (idx &GRP_COMDAT )) + shdr->bfd_section->flags + |=SEC_LINK_ONCE |SEC_LINK_DUPLICATES_DISCARD ; +break ; + } +if (idx >= shnum) + { + ((*_bfd_error_handler) + (_ ("%s: invalid SHT_GROUP entry" ), +bfd_archive_filename (abfd))); + idx =0 ; + } + dest->shdr =elf_elfsections (abfd)[idx]; + } + } + } + } + } + +if (num_group != (unsigned )-1 ) + { +unsigned int i; + +for (i =0 ; i < num_group; i++) + { +Elf_Internal_Shdr *shdr =elf_tdata (abfd)->group_sect_ptr[i]; +Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents; +unsigned int n_elt = shdr->sh_size /4 ; + +/* Look through this group's sections to see if current +section is a member. */ +while (--n_elt !=0 ) +if ((++idx)->shdr == hdr) + { +asection *s =NULL ; + +/* We are a member of this group. Go looking through +other members to see if any others are linked via +next_in_group. */ + idx = (Elf_Internal_Group *) shdr->contents; + n_elt = shdr->sh_size /4 ; +while (--n_elt !=0 ) +if ((s = (++idx)->shdr->bfd_section) !=NULL + &&elf_next_in_group (s) !=NULL ) +break ; +if (n_elt !=0 ) + { +/* Snarf the group name from other member, and +insert current section in circular list. */ +elf_group_name (newsect) =elf_group_name (s); +elf_next_in_group (newsect) =elf_next_in_group (s); +elf_next_in_group (s) = newsect; + } +else + { +const char *gname; + + gname =group_signature (abfd, shdr); +if (gname ==NULL ) +return FALSE; +elf_group_name (newsect) = gname; + +/* Start a circular list with one element. */ +elf_next_in_group (newsect) = newsect; + } + +/* If the group section has been created, point to the +new member. */ +if (shdr->bfd_section !=NULL ) +elf_next_in_group (shdr->bfd_section) = newsect; + + i = num_group -1 ; +break ; + } + } + } + +if (elf_group_name (newsect) ==NULL ) + { + (*_bfd_error_handler) (_ ("%s: no group info for section %s" ), +bfd_archive_filename (abfd), newsect->name); + } +return TRUE; +} + +bfd_boolean +bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec) +{ +return elf_next_in_group (sec) !=NULL ; +} + +bfd_boolean +bfd_elf_discard_group (bfd *abfd ATTRIBUTE_UNUSED, asection *group) +{ +asection *first =elf_next_in_group (group); +asection *s = first; + +while (s !=NULL ) + { + s->output_section = bfd_abs_section_ptr; + s =elf_next_in_group (s); +/* These lists are circular. */ +if (s == first) +break ; + } +return TRUE; +} + +/* Make a BFD section from an ELF section. We store a pointer to the +BFD section in the bfd_section field of the header. */ + +bfd_boolean +_bfd_elf_make_section_from_shdr (bfd *abfd, +Elf_Internal_Shdr *hdr, +const char *name) +{ +asection *newsect; +flagword flags; +const struct elf_backend_data *bed; + +if (hdr->bfd_section !=NULL ) + { +BFD_ASSERT (strcmp (name, +bfd_get_section_name (abfd, hdr->bfd_section)) ==0 ); +return TRUE; + } + + newsect =bfd_make_section_anyway (abfd, name); +if (newsect ==NULL ) +return FALSE; + + hdr->bfd_section = newsect; +elf_section_data (newsect)->this_hdr = *hdr; + +/* Always use the real type/flags. */ +elf_section_type (newsect) = hdr->sh_type; +elf_section_flags (newsect) = hdr->sh_flags; + + newsect->filepos = hdr->sh_offset; + +if (!bfd_set_section_vma (abfd, newsect, hdr->sh_addr) + || !bfd_set_section_size (abfd, newsect, hdr->sh_size) + || !bfd_set_section_alignment (abfd, newsect, +bfd_log2 ((bfd_vma ) hdr->sh_addralign))) +return FALSE; + + flags =SEC_NO_FLAGS ; +if (hdr->sh_type !=SHT_NOBITS ) + flags |=SEC_HAS_CONTENTS ; +if (hdr->sh_type ==SHT_GROUP ) + flags |=SEC_GROUP |SEC_EXCLUDE ; +if ((hdr->sh_flags &SHF_ALLOC ) !=0 ) + { + flags |=SEC_ALLOC ; +if (hdr->sh_type !=SHT_NOBITS ) + flags |=SEC_LOAD ; + } +if ((hdr->sh_flags &SHF_WRITE ) ==0 ) + flags |=SEC_READONLY ; +if ((hdr->sh_flags &SHF_EXECINSTR ) !=0 ) + flags |=SEC_CODE ; +else if ((flags &SEC_LOAD ) !=0 ) + flags |=SEC_DATA ; +if ((hdr->sh_flags &SHF_MERGE ) !=0 ) + { + flags |=SEC_MERGE ; + newsect->entsize = hdr->sh_entsize; +if ((hdr->sh_flags &SHF_STRINGS ) !=0 ) + flags |=SEC_STRINGS ; + } +if (hdr->sh_flags &SHF_GROUP ) +if (!setup_group (abfd, hdr, newsect)) +return FALSE; +if ((hdr->sh_flags &SHF_TLS ) !=0 ) + flags |=SEC_THREAD_LOCAL ; + +/* The debugging sections appear to be recognized only by name, not +any sort of flag. */ + { +static const char *debug_sec_names [] = + { +".debug" , +".gnu.linkonce.wi." , +".line" , +".stab" + }; +int i; + +for (i =ARRAY_SIZE (debug_sec_names); i--;) +if (strncmp (name, debug_sec_names[i],strlen (debug_sec_names[i])) ==0 ) +break ; + +if (i >=0 ) + flags |=SEC_DEBUGGING ; + } + +/* As a GNU extension, if the name begins with .gnu.linkonce, we +only link a single copy of the section. This is used to support +g++. g++ will emit each template expansion in its own section. +The symbols will be defined as weak, so that multiple definitions +are permitted. The GNU linker extension is to actually discard +all but one of the sections. */ +if (strncmp (name,".gnu.linkonce" ,sizeof ".gnu.linkonce" -1 ) ==0 + &&elf_next_in_group (newsect) ==NULL ) + flags |=SEC_LINK_ONCE |SEC_LINK_DUPLICATES_DISCARD ; + + bed =get_elf_backend_data (abfd); +if (bed->elf_backend_section_flags) +if (! bed->elf_backend_section_flags (&flags, hdr)) +return FALSE; + +if (!bfd_set_section_flags (abfd, newsect, flags)) +return FALSE; + +if ((flags &SEC_ALLOC ) !=0 ) + { +Elf_Internal_Phdr *phdr; +unsigned int i; + +/* Look through the phdrs to see if we need to adjust the lma. +If all the p_paddr fields are zero, we ignore them, since +some ELF linkers produce such output. */ + phdr =elf_tdata (abfd)->phdr; +for (i =0 ; i <elf_elfheader (abfd)->e_phnum; i++, phdr++) + { +if (phdr->p_paddr !=0 ) +break ; + } +if (i <elf_elfheader (abfd)->e_phnum) + { + phdr =elf_tdata (abfd)->phdr; +for (i =0 ; i <elf_elfheader (abfd)->e_phnum; i++, phdr++) + { +/* This section is part of this segment if its file +offset plus size lies within the segment's memory +span and, if the section is loaded, the extent of the +loaded data lies within the extent of the segment. + +Note - we used to check the p_paddr field as well, and +refuse to set the LMA if it was 0. This is wrong +though, as a perfectly valid initialised segment can +have a p_paddr of zero. Some architectures, eg ARM, +place special significance on the address 0 and +executables need to be able to have a segment which +covers this address. */ +if (phdr->p_type ==PT_LOAD + && (bfd_vma ) hdr->sh_offset >= phdr->p_offset + && (hdr->sh_offset + hdr->sh_size + <= phdr->p_offset + phdr->p_memsz) + && ((flags &SEC_LOAD ) ==0 + || (hdr->sh_offset + hdr->sh_size + <= phdr->p_offset + phdr->p_filesz))) + { +if ((flags &SEC_LOAD ) ==0 ) + newsect->lma = (phdr->p_paddr + + hdr->sh_addr - phdr->p_vaddr); +else +/* We used to use the same adjustment for SEC_LOAD +sections, but that doesn't work if the segment +is packed with code from multiple VMAs. +Instead we calculate the section LMA based on +the segment LMA. It is assumed that the +segment will contain sections with contiguous +LMAs, even if the VMAs are not. */ + newsect->lma = (phdr->p_paddr + + hdr->sh_offset - phdr->p_offset); + +/* With contiguous segments, we can't tell from file +offsets whether a section with zero size should +be placed at the end of one segment or the +beginning of the next. Decide based on vaddr. */ +if (hdr->sh_addr >= phdr->p_vaddr + && (hdr->sh_addr + hdr->sh_size + <= phdr->p_vaddr + phdr->p_memsz)) +break ; + } + } + } + } + +return TRUE; +} + +/* +INTERNAL_FUNCTION +bfd_elf_find_section + +SYNOPSIS +struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name); + +DESCRIPTION +Helper functions for GDB to locate the string tables. +Since BFD hides string tables from callers, GDB needs to use an +internal hook to find them. Sun's .stabstr, in particular, +isn't even pointed to by the .stab section, so ordinary +mechanisms wouldn't work to find it, even if we had some. +*/ + +struct elf_internal_shdr * +bfd_elf_find_section (bfd *abfd,char *name) +{ +Elf_Internal_Shdr **i_shdrp; +char *shstrtab; +unsigned int max; +unsigned int i; + + i_shdrp =elf_elfsections (abfd); +if (i_shdrp !=NULL ) + { + shstrtab =bfd_elf_get_str_section (abfd, +elf_elfheader (abfd)->e_shstrndx); +if (shstrtab !=NULL ) + { + max =elf_numsections (abfd); +for (i =1 ; i < max; i++) +if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name)) +return i_shdrp[i]; + } + } +return 0 ; +} + +const char *const bfd_elf_section_type_names[] = { +"SHT_NULL" ,"SHT_PROGBITS" ,"SHT_SYMTAB" ,"SHT_STRTAB" , +"SHT_RELA" ,"SHT_HASH" ,"SHT_DYNAMIC" ,"SHT_NOTE" , +"SHT_NOBITS" ,"SHT_REL" ,"SHT_SHLIB" ,"SHT_DYNSYM" , +}; + +/* ELF relocs are against symbols. If we are producing relocatable +output, and the reloc is against an external symbol, and nothing +has given us any additional addend, the resulting reloc will also +be against the same symbol. In such a case, we don't want to +change anything about the way the reloc is handled, since it will +all be done at final link time. Rather than put special case code +into bfd_perform_relocation, all the reloc types use this howto +function. It just short circuits the reloc if producing +relocatable output against an external symbol. */ + +bfd_reloc_status_type +bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED, +arelent *reloc_entry, +asymbol *symbol, + void *data ATTRIBUTE_UNUSED, +asection *input_section, +bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ +if (output_bfd !=NULL + && (symbol->flags &BSF_SECTION_SYM ) ==0 + && (! reloc_entry->howto->partial_inplace + || reloc_entry->addend ==0 )) + { + reloc_entry->address += input_section->output_offset; +return bfd_reloc_ok; + } + +return bfd_reloc_continue; +} +
+/* Make sure sec_info_type is cleared if sec_info is cleared too. */ +
+static void
+merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec)
+{
+ BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE);
+ sec->sec_info_type = ELF_INFO_TYPE_NONE;
+}
+
+/* Finish SHF_MERGE section merging. */
+
+bfd_boolean
+_bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info) +{
+ bfd *ibfd;
+ asection *sec;
+
+ if (!is_elf_hash_table (info->hash))
+ return FALSE;
+
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ if ((ibfd->flags & DYNAMIC) == 0)
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ if ((sec->flags & SEC_MERGE) != 0
+ && !bfd_is_abs_section (sec->output_section))
+ {
+ struct bfd_elf_section_data *secdata;
+
+ secdata = elf_section_data (sec);
+ if (! _bfd_add_merge_section (abfd,
+ &elf_hash_table (info)->merge_info, + sec, &secdata->sec_info)) + return FALSE;
+ else if (secdata->sec_info)
+ sec->sec_info_type = ELF_INFO_TYPE_MERGE;
+ }
+
+ if (elf_hash_table (info)->merge_info != NULL)
+ _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info,
+ merge_sections_remove_hook);
+ return TRUE;
+}
+
+void
+_bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info) +{
+ sec->output_section = bfd_abs_section_ptr; + sec->output_offset = sec->vma; + if (!is_elf_hash_table (info->hash))
+ return;
+
+ sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS;
+}
+
+/* Copy the program header and other data from one object module to
+ another. */
+
+bfd_boolean
+_bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
+{
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ BFD_ASSERT (!elf_flags_init (obfd)
+ || (elf_elfheader (obfd)->e_flags
+ == elf_elfheader (ibfd)->e_flags));
+
+ elf_gp (obfd) = elf_gp (ibfd); + elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; + elf_flags_init (obfd) = TRUE; + return TRUE;
+}
+
+/* Print out the program headers. */
+
+bfd_boolean
+_bfd_elf_print_private_bfd_data (bfd *abfd, void *farg) +{
+ FILE *f = farg; + Elf_Internal_Phdr *p; + asection *s; + bfd_byte *dynbuf = NULL;
+
+ p = elf_tdata (abfd)->phdr;
+ if (p != NULL)
+ {
+ unsigned int i, c;
+
+ fprintf (f, _("\nProgram Header:\n"));
+ c = elf_elfheader (abfd)->e_phnum;
+ for (i = 0; i < c; i++, p++)+ {
+ const char *pt;
+ char buf[20];
+
+ switch (p->p_type)
+ {
+ case PT_NULL: pt = "NULL"; break;
+ case PT_LOAD: pt = "LOAD"; break;
+ case PT_DYNAMIC: pt = "DYNAMIC"; break;
+ case PT_INTERP: pt = "INTERP"; break;
+ case PT_NOTE: pt = "NOTE"; break;
+ case PT_SHLIB: pt = "SHLIB"; break;
+ case PT_PHDR: pt = "PHDR"; break;
+ case PT_TLS: pt = "TLS"; break;
+ case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
+ case PT_GNU_STACK: pt = "STACK"; break;
+ case PT_GNU_RELRO: pt = "RELRO"; break;
+ default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break;
+ }
+ fprintf (f, "%8s off 0x", pt);
+ bfd_fprintf_vma (abfd, f, p->p_offset);
+ fprintf (f, " vaddr 0x");
+ bfd_fprintf_vma (abfd, f, p->p_vaddr);
+ fprintf (f, " paddr 0x");
+ bfd_fprintf_vma (abfd, f, p->p_paddr);
+ fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align));
+ fprintf (f, " filesz 0x");
+ bfd_fprintf_vma (abfd, f, p->p_filesz);
+ fprintf (f, " memsz 0x");
+ bfd_fprintf_vma (abfd, f, p->p_memsz);
+ fprintf (f, " flags %c%c%c",
+ (p->p_flags & PF_R) != 0 ? 'r' : '-',
+ (p->p_flags & PF_W) != 0 ? 'w' : '-',
+ (p->p_flags & PF_X) != 0 ? 'x' : '-');+ if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0)
+ fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X));
+ fprintf (f, "\n");
+ }
+ }
+
+ s = bfd_get_section_by_name (abfd, ".dynamic");
+ if (s != NULL)
+ {
+ int elfsec; + unsigned long shlink; + bfd_byte *extdyn, *extdynend; + size_t extdynsize; + void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
+
+ fprintf (f, _("\nDynamic Section:\n"));
+
+ if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
+ goto error_return;
+
+ elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
+ if (elfsec == -1)
+ goto error_return;
+ shlink = elf_elfsections (abfd)[elfsec]->sh_link;
+
+ extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
+ swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
+
+ extdyn = dynbuf;
+ extdynend = extdyn + s->size;
+ for (; extdyn < extdynend; extdyn += extdynsize)
+ {
+ Elf_Internal_Dyn dyn;
+ const char *name;
+ char ab[20];
+ bfd_boolean stringp;+
+ (*swap_dyn_in) (abfd, extdyn, &dyn);
+
+ if (dyn.d_tag == DT_NULL)
+ break;
+
+ stringp = FALSE;
+ switch (dyn.d_tag)
+ {
+ default:
+ sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag); + name = ab; + break; + + case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break; + case DT_PLTRELSZ: name = "PLTRELSZ"; break; + case DT_PLTGOT: name = "PLTGOT"; break; + case DT_HASH: name = "HASH"; break; + case DT_STRTAB: name = "STRTAB"; break; + case DT_SYMTAB: name = "SYMTAB"; break; + case DT_RELA: name = "RELA"; break; + case DT_RELASZ: name = "RELASZ"; break; + case DT_RELAENT: name = "RELAENT"; break; + case DT_STRSZ: name = "STRSZ"; break; + case DT_SYMENT: name = "SYMENT"; break; + case DT_INIT: name = "INIT"; break; + case DT_FINI: name = "FINI"; break; + case DT_SONAME: name = "SONAME"; stringp = TRUE; break; + case DT_RPATH: name = "RPATH"; stringp = TRUE; break; + case DT_SYMBOLIC: name = "SYMBOLIC"; break; + case DT_REL: name = "REL"; break; + case DT_RELSZ: name = "RELSZ"; break; + case DT_RELENT: name = "RELENT"; break; + case DT_PLTREL: name = "PLTREL"; break; + case DT_DEBUG: name = "DEBUG"; break; + case DT_TEXTREL: name = "TEXTREL"; break; + case DT_JMPREL: name = "JMPREL"; break; + case DT_BIND_NOW: name = "BIND_NOW"; break; + case DT_INIT_ARRAY: name = "INIT_ARRAY"; break; + case DT_FINI_ARRAY: name = "FINI_ARRAY"; break; + case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break; + case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break; + case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break; + case DT_FLAGS: name = "FLAGS"; break; + case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break; + case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break; + case DT_CHECKSUM: name = "CHECKSUM"; break; + case DT_PLTPADSZ: name = "PLTPADSZ"; break; + case DT_MOVEENT: name = "MOVEENT"; break; + case DT_MOVESZ: name = "MOVESZ"; break; + case DT_FEATURE: name = "FEATURE"; break; + case DT_POSFLAG_1: name = "POSFLAG_1"; break; + case DT_SYMINSZ: name = "SYMINSZ"; break; + case DT_SYMINENT: name = "SYMINENT"; break; + case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break; + case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break; + case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break; + case DT_PLTPAD: name = "PLTPAD"; break; + case DT_MOVETAB: name = "MOVETAB"; break; + case DT_SYMINFO: name = "SYMINFO"; break; + case DT_RELACOUNT: name = "RELACOUNT"; break; + case DT_RELCOUNT: name = "RELCOUNT"; break; + case DT_FLAGS_1: name = "FLAGS_1"; break; + case DT_VERSYM: name = "VERSYM"; break; + case DT_VERDEF: name = "VERDEF"; break; + case DT_VERDEFNUM: name = "VERDEFNUM"; break; + case DT_VERNEED: name = "VERNEED"; break; + case DT_VERNEEDNUM: name = "VERNEEDNUM"; break; + case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break; + case DT_USED: name = "USED"; break; + case DT_FILTER: name = "FILTER"; stringp = TRUE; break; + }
+
+ fprintf (f, " %-11s ", name);
+ if (! stringp)
+ fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val);
+ else
+ {
+ const char *string;
+ unsigned int tagv = dyn.d_un.d_val;
+
+ string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
+ if (string == NULL)
+ goto error_return;
+ fprintf (f, "%s", string);
+ }
+ fprintf (f, "\n");
+ }
+
+ free (dynbuf);
+ dynbuf = NULL;
+ }
+
+ if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
+ || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
+ {
+ if (! _bfd_elf_slurp_version_tables (abfd))
+ return FALSE;
+ }
+
+ if (elf_dynverdef (abfd) != 0)
+ {
+ Elf_Internal_Verdef *t;
+
+ fprintf (f, _("\nVersion definitions:\n"));
+ for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
+ {
+ fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
+ t->vd_flags, t->vd_hash, t->vd_nodename);
+ if (t->vd_auxptr->vda_nextptr != NULL)
+ {
+ Elf_Internal_Verdaux *a;
+
+ fprintf (f, "\t");
+ for (a = t->vd_auxptr->vda_nextptr;
+ a != NULL;
+ a = a->vda_nextptr)
+ fprintf (f, "%s ", a->vda_nodename);
+ fprintf (f, "\n");
+ }
+ }
+ }
+
+ if (elf_dynverref (abfd) != 0)
+ {
+ Elf_Internal_Verneed *t;
+
+ fprintf (f, _("\nVersion References:\n"));
+ for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref)
+ {
+ Elf_Internal_Vernaux *a;
+
+ fprintf (f, _(" required from %s:\n"), t->vn_filename);
+ for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
+ fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
+ a->vna_flags, a->vna_other, a->vna_nodename);
+ }
+ }
+
+ return TRUE;
+
+ error_return:
+ if (dynbuf != NULL)
+ free (dynbuf);
+ return FALSE;
+}
+
+/* Display ELF-specific fields of a symbol. */
+
+void
+bfd_elf_print_symbol (bfd *abfd,
+ void *filep, + asymbol *symbol, + bfd_print_symbol_type how)
+{
+ FILE *file = filep;
+ switch (how)
+ {
+ case bfd_print_symbol_name:
+ fprintf (file, "%s", symbol->name);
+ break;
+ case bfd_print_symbol_more:
+ fprintf (file, "elf "); + bfd_fprintf_vma (abfd, file, symbol->value); + fprintf (file, " %lx", (long) symbol->flags); + break;
+ case bfd_print_symbol_all:
+ {
+ const char *section_name;
+ const char *name = NULL;
+ const struct elf_backend_data *bed;
+ unsigned char st_other;
+ bfd_vma val;
+
+ section_name = symbol->section ? symbol->section->name : "(*none*)";
+
+ bed = get_elf_backend_data (abfd);
+ if (bed->elf_backend_print_symbol_all)
+ name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol);
+
+ if (name == NULL)
+ {
+ name = symbol->name;
+ bfd_print_symbol_vandf (abfd, file, symbol);
+ }
+
+ fprintf (file, " %s\t", section_name);
+ /* Print the "other" value for a symbol. For common symbols,
+ we've already printed the size; now print the alignment. + For other symbols, we have no specified alignment, and + we've printed the address; now print the size. */
+ if (bfd_is_com_section (symbol->section))
+ val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
+ else
+ val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size;
+ bfd_fprintf_vma (abfd, file, val);
+
+ /* If we have version information, print it. */
+ if (elf_tdata (abfd)->dynversym_section != 0
+ && (elf_tdata (abfd)->dynverdef_section != 0
+ || elf_tdata (abfd)->dynverref_section != 0))
+ {
+ unsigned int vernum;
+ const char *version_string;
+
+ vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION;
+
+ if (vernum == 0)
+ version_string = "";
+ else if (vernum == 1)
+ version_string = "Base";
+ else if (vernum <= elf_tdata (abfd)->cverdefs)
+ version_string =
+ elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
+ else
+ {
+ Elf_Internal_Verneed *t;
+
+ version_string = "";
+ for (t = elf_tdata (abfd)->verref;
+ t != NULL;
+ t = t->vn_nextref)
+ {
+ Elf_Internal_Vernaux *a;
+
+ for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
+ {
+ if (a->vna_other == vernum)
+ {
+ version_string = a->vna_nodename;
+ break;
+ }
+ }
+ }
+ }
+
+ if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0)
+ fprintf (file, " %-11s", version_string);
+ else
+ {
+ int i;
+
+ fprintf (file, " (%s)", version_string);
+ for (i = 10 - strlen (version_string); i > 0; --i)
+ putc (' ', file);
+ }
+ }
+
+ /* If the st_other field is not zero, print it. */
+ st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other;
+
+ switch (st_other)
+ {
+ case 0: break;
+ case STV_INTERNAL: fprintf (file, " .internal"); break;
+ case STV_HIDDEN: fprintf (file, " .hidden"); break;
+ case STV_PROTECTED: fprintf (file, " .protected"); break;
+ default:+ /* Some other non-defined flags are also present, so print
+ everything hex. */
+ fprintf (file, " 0x%02x", (unsigned int) st_other);
+ }
+
+ fprintf (file, " %s", name);
+ }
+ break;
+ }
+}
+
+/* Create an entry in an ELF linker hash table. */
+
+struct bfd_hash_entry *
+_bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
+
+ /* Call the allocation method of the superclass. */ + entry = _bfd_link_hash_newfunc (entry, table, string); + if (entry != NULL)
+ {
+ struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry;
+ struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table;
+
+ /* Set local fields. */ + ret->indx = -1; + ret->dynindx = -1; + ret->dynstr_index = 0; + ret->elf_hash_value = 0; + ret->weakdef = NULL; + ret->verinfo.verdef = NULL; + ret->vtable_entries_size = 0; + ret->vtable_entries_used = NULL; + ret->vtable_parent = NULL; + ret->got = htab->init_refcount; + ret->plt = htab->init_refcount; + ret->size = 0; + ret->type = STT_NOTYPE; + ret->other = 0; + /* Assume that we have been called by a non-ELF symbol reader. + This flag is then reset by the code which reads an ELF input + file. This ensures that a symbol created by a non-ELF symbol + reader will have the flag set correctly. */
+ ret->elf_link_hash_flags = ELF_LINK_NON_ELF;
+ }
+
+ return entry;
+}
+
+/* Copy data from an indirect symbol to its direct symbol, hiding the
+ old indirect symbol. Also used for copying flags to a weakdef. */
+
+void
+_bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
+{
+ bfd_signed_vma tmp;
+ bfd_signed_vma lowest_valid = bed->can_refcount;
+
+ /* Copy down any references that we may have already seen to the
+ symbol which just became indirect. */
+
+ dir->elf_link_hash_flags
+ |= ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
+ | ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_REF_REGULAR_NONWEAK + | ELF_LINK_NON_GOT_REF + | ELF_LINK_HASH_NEEDS_PLT + | ELF_LINK_POINTER_EQUALITY_NEEDED);
+
+ if (ind->root.type != bfd_link_hash_indirect)
+ return;
+
+ /* Copy over the global and procedure linkage table refcount entries.
+ These may have been already set up by a check_relocs routine. */
+ tmp = dir->got.refcount;
+ if (tmp < lowest_valid)
+ {
+ dir->got.refcount = ind->got.refcount;
+ ind->got.refcount = tmp;
+ }
+ else
+ BFD_ASSERT (ind->got.refcount < lowest_valid);
+
+ tmp = dir->plt.refcount;
+ if (tmp < lowest_valid)
+ {
+ dir->plt.refcount = ind->plt.refcount;
+ ind->plt.refcount = tmp;
+ }
+ else
+ BFD_ASSERT (ind->plt.refcount < lowest_valid);
+
+ if (dir->dynindx == -1)
+ {
+ dir->dynindx = ind->dynindx; + dir->dynstr_index = ind->dynstr_index; + ind->dynindx = -1; + ind->dynstr_index = 0;
+ }
+ else
+ BFD_ASSERT (ind->dynindx == -1);
+}
+
+void
+_bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ bfd_boolean force_local)
+{
+ h->plt = elf_hash_table (info)->init_offset; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + if (force_local)
+ {
+ h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
+ if (h->dynindx != -1)
+ {
+ h->dynindx = -1;
+ _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
+ h->dynstr_index);
+ }
+ }
+}
+
+/* Initialize an ELF linker hash table. */
+
+bfd_boolean
+_bfd_elf_link_hash_table_init
+ (struct elf_link_hash_table *table,
+ bfd *abfd,
+ struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *))
+{
+ bfd_boolean ret;
+
+ table->dynamic_sections_created = FALSE; + table->dynobj = NULL; + /* Make sure can_refcount is extended to the width and signedness of + init_refcount before we subtract one from it. */ + table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount; + table->init_refcount.refcount -= 1; + table->init_offset.offset = -(bfd_vma) 1; + /* The first dynamic symbol is a dummy. */ + table->dynsymcount = 1; + table->dynstr = NULL; + table->bucketcount = 0; + table->needed = NULL; + table->hgot = NULL; + table->merge_info = NULL; + memset (&table->stab_info, 0, sizeof (table->stab_info)); + memset (&table->eh_info, 0, sizeof (table->eh_info)); + table->dynlocal = NULL; + table->runpath = NULL; + table->tls_sec = NULL; + table->tls_size = 0; + table->loaded = NULL;
+
+ ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc);
+ table->root.type = bfd_link_elf_hash_table;
+
+ return ret;
+}
+
+/* Create an ELF linker hash table. */
+
+struct bfd_link_hash_table *
+_bfd_elf_link_hash_table_create (bfd *abfd)
+{
+ struct elf_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf_link_hash_table);
+
+ ret = bfd_malloc (amt);
+ if (ret == NULL)
+ return NULL;
+
+ if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc))
+ {
+ free (ret);
+ return NULL;
+ }
+
+ return &ret->root;
+}
+
+/* This is a hook for the ELF emulation code in the generic linker to
+ tell the backend linker what file name to use for the DT_NEEDED
+ entry for a dynamic object. */
+
+void
+bfd_elf_set_dt_needed_name (bfd *abfd, const char *name)
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && bfd_get_format (abfd) == bfd_object)
+ elf_dt_name (abfd) = name;
+}
+
+void
+bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class)
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && bfd_get_format (abfd) == bfd_object)
+ elf_dyn_lib_class (abfd) = lib_class;
+}
+
+/* Get the list of DT_NEEDED entries for a link. This is a hook for
+ the linker ELF emulation code. */
+
+struct bfd_link_needed_list *
+bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ if (! is_elf_hash_table (info->hash))
+ return NULL;
+ return elf_hash_table (info)->needed;
+}
+
+/* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
+ hook for the linker ELF emulation code. */
+
+struct bfd_link_needed_list *
+bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ if (! is_elf_hash_table (info->hash))
+ return NULL;
+ return elf_hash_table (info)->runpath;
+}
+
+/* Get the name actually used for a dynamic object for a link. This
+ is the SONAME entry if there is one. Otherwise, it is the string
+ passed to bfd_elf_set_dt_needed_name, or it is the filename. */
+
+const char *
+bfd_elf_get_dt_soname (bfd *abfd)
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && bfd_get_format (abfd) == bfd_object)
+ return elf_dt_name (abfd);
+ return NULL;
+}
+
+/* Get the list of DT_NEEDED entries from a BFD. This is a hook for
+ the ELF linker emulation code. */
+
+bfd_boolean
+bfd_elf_get_bfd_needed_list (bfd *abfd,
+ struct bfd_link_needed_list **pneeded)
+{
+ asection *s; + bfd_byte *dynbuf = NULL; + int elfsec; + unsigned long shlink; + bfd_byte *extdyn, *extdynend; + size_t extdynsize; + void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
+
+ *pneeded = NULL;
+
+ if (bfd_get_flavour (abfd) != bfd_target_elf_flavour
+ || bfd_get_format (abfd) != bfd_object)
+ return TRUE;
+
+ s = bfd_get_section_by_name (abfd, ".dynamic");
+ if (s == NULL || s->size == 0)
+ return TRUE;
+
+ if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
+ goto error_return;
+
+ elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
+ if (elfsec == -1)
+ goto error_return;
+
+ shlink = elf_elfsections (abfd)[elfsec]->sh_link; +
+ extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
+ swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; +
+ extdyn = dynbuf; + extdynend = extdyn + s->size; + for (; extdyn < extdynend; extdyn += extdynsize)
+ {
+ Elf_Internal_Dyn dyn;
+
+ (*swap_dyn_in) (abfd, extdyn, &dyn);
+
+ if (dyn.d_tag == DT_NULL)
+ break;
+
+ if (dyn.d_tag == DT_NEEDED)
+ {
+ const char *string; + struct bfd_link_needed_list *l; + unsigned int tagv = dyn.d_un.d_val; + bfd_size_type amt;
+
+ string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
+ if (string == NULL)
+ goto error_return;
+
+ amt = sizeof *l; + l = bfd_alloc (abfd, amt); + if (l == NULL) + goto error_return; + + l->by = abfd; + l->name = string; + l->next = *pneeded; + *pneeded = l;
+ }
+ }
+
+ free (dynbuf);
+
+ return TRUE;
+
+ error_return:
+ if (dynbuf != NULL)
+ free (dynbuf);
+ return FALSE;
+}
+
+/* Allocate an ELF string table--force the first byte to be zero. */ +
+struct bfd_strtab_hash *
+_bfd_elf_stringtab_init (void)
+{
+ struct bfd_strtab_hash *ret;
+
+ ret = _bfd_stringtab_init ();
+ if (ret != NULL)
+ {
+ bfd_size_type loc;
+
+ loc = _bfd_stringtab_add (ret, "", TRUE, FALSE); + BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1); + if (loc == (bfd_size_type) -1)
+ {
+ _bfd_stringtab_free (ret);
+ ret = NULL;
+ }
+ }
+ return ret;
+}
+
+/* ELF .o/exec file reading */
+
+/* Create a new bfd section from an ELF section header. */ +
+bfd_boolean
+bfd_section_from_shdr (bfd *abfd, unsigned int shindex) +{
+ Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex]; + Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); + const struct elf_backend_data *bed = get_elf_backend_data (abfd); + const char *name;
+
+ name = elf_string_from_elf_strtab (abfd, hdr->sh_name); +
+ switch (hdr->sh_type)
+ {
+ case SHT_NULL:
+ /* Inactive section. Throw it away. */
+ return TRUE;
+
+ case SHT_PROGBITS: /* Normal section with contents. */ + case SHT_NOBITS: /* .bss section. */ + case SHT_HASH: /* .hash section. */ + case SHT_NOTE: /* .note section. */ + case SHT_INIT_ARRAY: /* .init_array section. */ + case SHT_FINI_ARRAY: /* .fini_array section. */ + case SHT_PREINIT_ARRAY: /* .preinit_array section. */
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+
+ case SHT_DYNAMIC: /* Dynamic linking information. */
+ if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ return FALSE;
+ if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
+ {
+ Elf_Internal_Shdr *dynsymhdr;
+
+ /* The shared libraries distributed with hpux11 have a bogus
+ sh_link field for the ".dynamic" section. Find the
+ string table for the ".dynsym" section instead. */
+ if (elf_dynsymtab (abfd) != 0)
+ {
+ dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)];
+ hdr->sh_link = dynsymhdr->sh_link;
+ }
+ else
+ {
+ unsigned int i, num_sec;
+
+ num_sec = elf_numsections (abfd);
+ for (i = 1; i < num_sec; i++)
+ {
+ dynsymhdr = elf_elfsections (abfd)[i];
+ if (dynsymhdr->sh_type == SHT_DYNSYM)
+ {
+ hdr->sh_link = dynsymhdr->sh_link;
+ break;
+ }
+ }
+ }
+ }
+ break;
+
+ case SHT_SYMTAB: /* A symbol table */
+ if (elf_onesymtab (abfd) == shindex)
+ return TRUE;
+
+ BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); + BFD_ASSERT (elf_onesymtab (abfd) == 0); + elf_onesymtab (abfd) = shindex; + elf_tdata (abfd)->symtab_hdr = *hdr; + elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr; + abfd->flags |= HAS_SYMS; + + /* Sometimes a shared object will map in the symbol table. If + SHF_ALLOC is set, and this is a shared object, then we also + treat this section as a BFD section. We can not base the + decision purely on SHF_ALLOC, because that flag is sometimes + set in a relocatable object file, which would confuse the + linker. */
+ if ((hdr->sh_flags & SHF_ALLOC) != 0
+ && (abfd->flags & DYNAMIC) != 0
+ && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ return FALSE;
+
+ return TRUE;
+
+ case SHT_DYNSYM: /* A dynamic symbol table */
+ if (elf_dynsymtab (abfd) == shindex)
+ return TRUE;
+
+ BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym); + BFD_ASSERT (elf_dynsymtab (abfd) == 0); + elf_dynsymtab (abfd) = shindex; + elf_tdata (abfd)->dynsymtab_hdr = *hdr; + elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr; + abfd->flags |= HAS_SYMS;
+
+ /* Besides being a symbol table, we also treat this as a regular
+ section, so that objcopy can handle it. */
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+
+ case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
+ if (elf_symtab_shndx (abfd) == shindex)
+ return TRUE;
+
+ /* Get the associated symbol table. */
+ if (! bfd_section_from_shdr (abfd, hdr->sh_link)
+ || hdr->sh_link != elf_onesymtab (abfd))
+ return FALSE;
+
+ elf_symtab_shndx (abfd) = shindex; + elf_tdata (abfd)->symtab_shndx_hdr = *hdr; + elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr; + return TRUE;
+
+ case SHT_STRTAB: /* A string table */
+ if (hdr->bfd_section != NULL)
+ return TRUE;
+ if (ehdr->e_shstrndx == shindex)
+ {
+ elf_tdata (abfd)->shstrtab_hdr = *hdr; + elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr; + return TRUE;
+ }
+ {
+ unsigned int i, num_sec;
+
+ num_sec = elf_numsections (abfd);
+ for (i = 1; i < num_sec; i++)
+ {
+ Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
+ if (hdr2->sh_link == shindex)
+ {
+ if (! bfd_section_from_shdr (abfd, i))
+ return FALSE;
+ if (elf_onesymtab (abfd) == i)
+ {
+ elf_tdata (abfd)->strtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] =
+ &elf_tdata (abfd)->strtab_hdr;
+ return TRUE;
+ }
+ if (elf_dynsymtab (abfd) == i)
+ {
+ elf_tdata (abfd)->dynstrtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] = hdr =
+ &elf_tdata (abfd)->dynstrtab_hdr;
+ /* We also treat this as a regular section, so
+ that objcopy can handle it. */
+ break;
+ }
+#if 0 /* Not handling other string tables specially right now. */
+ hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */
+ /* We have a strtab for some random other section. */
+ newsect = (asection *) hdr2->bfd_section;
+ if (!newsect)
+ break;
+ hdr->bfd_section = newsect;
+ hdr2 = &elf_section_data (newsect)->str_hdr;
+ *hdr2 = *hdr;
+ elf_elfsections (abfd)[shindex] = hdr2;
+#endif
+ }
+ }
+ }
+
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+
+ case SHT_REL:
+ case SHT_RELA:
+ /* *These* do a lot of work -- but build no sections! */
+ {
+ asection *target_sect;
+ Elf_Internal_Shdr *hdr2;
+ unsigned int num_sec = elf_numsections (abfd);
+
+ /* Check for a bogus link to avoid crashing. */
+ if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE)
+ || hdr->sh_link >= num_sec)
+ {
+ ((*_bfd_error_handler)
+ (_("%s: invalid link %lu for reloc section %s (index %u)"),
+ bfd_archive_filename (abfd), hdr->sh_link, name, shindex));
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+ }
+
+ /* For some incomprehensible reason Oracle distributes
+ libraries for Solaris in which some of the objects have + bogus sh_link fields. It would be nice if we could just + reject them, but, unfortunately, some people need to use + them. We scan through the section headers; if we find only + one suitable symbol table, we clobber the sh_link to point + to it. I hope this doesn't break anything. */
+ if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
+ && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM)
+ {
+ unsigned int scan;
+ int found;
+
+ found = 0;
+ for (scan = 1; scan < num_sec; scan++)
+ {
+ if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB
+ || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM)
+ {
+ if (found != 0)
+ {
+ found = 0;
+ break;
+ }
+ found = scan;
+ }
+ }
+ if (found != 0)
+ hdr->sh_link = found;
+ }
+
+ /* Get the symbol table. */
+ if (elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
+ && ! bfd_section_from_shdr (abfd, hdr->sh_link))
+ return FALSE;
+
+ /* If this reloc section does not use the main symbol table we
+ don't treat it as a reloc section. BFD can't adequately + represent such a section, so at least for now, we don't + try. We just present it as a normal section. We also + can't use it as a reloc section if it points to the null + section. */
+ if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF)
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+
+ if (! bfd_section_from_shdr (abfd, hdr->sh_info))
+ return FALSE;
+ target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
+ if (target_sect == NULL)
+ return FALSE;
+
+ if ((target_sect->flags & SEC_RELOC) == 0
+ || target_sect->reloc_count == 0)
+ hdr2 = &elf_section_data (target_sect)->rel_hdr;
+ else
+ {
+ bfd_size_type amt; + BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL); + amt = sizeof (*hdr2); + hdr2 = bfd_alloc (abfd, amt); + elf_section_data (target_sect)->rel_hdr2 = hdr2;
+ }
+ *hdr2 = *hdr;
+ elf_elfsections (abfd)[shindex] = hdr2;
+ target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr);
+ target_sect->flags |= SEC_RELOC;
+ target_sect->relocation = NULL;
+ target_sect->rel_filepos = hdr->sh_offset;
+ /* In the section to which the relocations apply, mark whether
+ its relocations are of the REL or RELA variety. */
+ if (hdr->sh_size != 0)
+ target_sect->use_rela_p = hdr->sh_type == SHT_RELA;
+ abfd->flags |= HAS_RELOC;
+ return TRUE;
+ }
+ break;
+
+ case SHT_GNU_verdef:
+ elf_dynverdef (abfd) = shindex; + elf_tdata (abfd)->dynverdef_hdr = *hdr; + return _bfd_elf_make_section_from_shdr (abfd, hdr, name); + break; + + case SHT_GNU_versym: + elf_dynversym (abfd) = shindex; + elf_tdata (abfd)->dynversym_hdr = *hdr; + return _bfd_elf_make_section_from_shdr (abfd, hdr, name); + break; + + case SHT_GNU_verneed: + elf_dynverref (abfd) = shindex; + elf_tdata (abfd)->dynverref_hdr = *hdr; + return _bfd_elf_make_section_from_shdr (abfd, hdr, name); + break;
+
+ case SHT_SHLIB:
+ return TRUE;
+
+ case SHT_GROUP:
+ /* We need a BFD section for objcopy and relocatable linking,
+ and it's handy to have the signature available as the section
+ name. */
+ name = group_signature (abfd, hdr);
+ if (name == NULL)
+ return FALSE;
+ if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ return FALSE;
+ if (hdr->contents != NULL)
+ {
+ Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents; + unsigned int n_elt = hdr->sh_size / 4; + asection *s;
+
+ if (idx->flags & GRP_COMDAT)
+ hdr->bfd_section->flags
+ |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
+
+ /* We try to keep the same section order as it comes in. */ + idx += n_elt; + while (--n_elt != 0)
+ if ((s = (--idx)->shdr->bfd_section) != NULL
+ && elf_next_in_group (s) != NULL)
+ {
+ elf_next_in_group (hdr->bfd_section) = s;
+ break;
+ }
+ }
+ break;
+
+ default:
+ /* Check for any processor-specific section types. */
+ {
+ if (bed->elf_backend_section_from_shdr)
+ (*bed->elf_backend_section_from_shdr) (abfd, hdr, name);
+ }
+ break;
+ }
+
+ return TRUE;
+}
+
+/* Return the section for the local symbol specified by ABFD, R_SYMNDX.
+ Return SEC for sections that have no elf section, and NULL on error. */
+
+asection *
+bfd_section_from_r_symndx (bfd *abfd,
+ struct sym_sec_cache *cache,
+ asection *sec,
+ unsigned long r_symndx)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ unsigned char esym[sizeof (Elf64_External_Sym)];
+ Elf_External_Sym_Shndx eshndx;
+ Elf_Internal_Sym isym;
+ unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;+
+ if (cache->abfd == abfd && cache->indx[ent] == r_symndx)
+ return cache->sec[ent];
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx,
+ &isym, esym, &eshndx) == NULL)
+ return NULL;
+
+ if (cache->abfd != abfd)
+ {
+ memset (cache->indx, -1, sizeof (cache->indx));
+ cache->abfd = abfd;
+ }
+ cache->indx[ent] = r_symndx;
+ cache->sec[ent] = sec;
+ if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE)
+ || isym.st_shndx > SHN_HIRESERVE)
+ {
+ asection *s;
+ s = bfd_section_from_elf_index (abfd, isym.st_shndx);
+ if (s != NULL)+ cache->sec[ent] = s;
+ }
+ return cache->sec[ent];
+}
+
+/* Given an ELF section number, retrieve the corresponding BFD
+ section. */
+
+asection *
+bfd_section_from_elf_index (bfd *abfd, unsigned int index) +{
+ if (index >= elf_numsections (abfd))
+ return NULL;
+ return elf_elfsections (abfd)[index]->bfd_section; +}
+
+static struct bfd_elf_special_section const special_sections[] = +{
+ { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { ".comment", 8, 0, SHT_PROGBITS, 0 },
+ { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { ".debug", 6, 0, SHT_PROGBITS, 0 },
+ { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".line", 5, 0, SHT_PROGBITS, 0 },
+ { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC },
+ { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC },
+ { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
+ { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
+ { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
+ { ".debug_line", 11, 0, SHT_PROGBITS, 0 },
+ { ".debug_info", 11, 0, SHT_PROGBITS, 0 },
+ { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 },
+ { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 },
+ { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC },
+ { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC },
+ { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC },
+ { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { ".hash", 5, 0, SHT_HASH, SHF_ALLOC },
+ { ".interp", 7, 0, SHT_PROGBITS, 0 },
+ { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".shstrtab", 9, 0, SHT_STRTAB, 0 },
+ { ".strtab", 7, 0, SHT_STRTAB, 0 },
+ { ".symtab", 7, 0, SHT_SYMTAB, 0 },
+ { ".gnu.version", 12, 0, SHT_GNU_versym, 0 },
+ { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 },
+ { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 },
+ { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 },
+ { ".note", 5, -1, SHT_NOTE, 0 },
+ { ".rela", 5, -1, SHT_RELA, 0 },
+ { ".rel", 4, -1, SHT_REL, 0 },
+ { ".stabstr", 5, 3, SHT_STRTAB, 0 },
+ { NULL, 0, 0, 0, 0 }+};
+
+static const struct bfd_elf_special_section * +get_special_section (const char *name,
+ const struct bfd_elf_special_section *special_sections,
+ unsigned int rela)
+{
+ int i;
+ int len = strlen (name);
+
+ for (i = 0; special_sections[i].prefix != NULL; i++)
+ {
+ int suffix_len;
+ int prefix_len = special_sections[i].prefix_length;
+
+ if (len < prefix_len)
+ continue;
+ if (memcmp (name, special_sections[i].prefix, prefix_len) != 0)
+ continue;
+
+ suffix_len = special_sections[i].suffix_length;
+ if (suffix_len <= 0)
+ {
+ if (name[prefix_len] != 0)
+ {
+ if (suffix_len == 0)
+ continue;
+ if (name[prefix_len] != '.'
+ && (suffix_len == -2
+ || (rela && special_sections[i].type == SHT_REL)))
+ continue;
+ }
+ }
+ else
+ {
+ if (len < prefix_len + suffix_len)
+ continue;
+ if (memcmp (name + len - suffix_len,
+ special_sections[i].prefix + prefix_len,
+ suffix_len) != 0)
+ continue;
+ }
+ return &special_sections[i];
+ }
+
+ return NULL;
+}
+
+const struct bfd_elf_special_section * +_bfd_elf_get_sec_type_attr (bfd *abfd, const char *name) +{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ const struct bfd_elf_special_section *ssect = NULL;
+
+ /* See if this is one of the special sections. */
+ if (name)
+ {
+ unsigned int rela = bed->default_use_rela_p;
+
+ if (bed->special_sections)
+ ssect = get_special_section (name, bed->special_sections, rela);
+
+ if (! ssect)
+ ssect = get_special_section (name, special_sections, rela);
+ }
+
+ return ssect;
+}
+
+bfd_boolean
+_bfd_elf_new_section_hook (bfd *abfd, asection *sec)
+{
+ struct bfd_elf_section_data *sdata;
+ const struct bfd_elf_special_section *ssect;
+
+ sdata = (struct bfd_elf_section_data *) sec->used_by_bfd;
+ if (sdata == NULL)
+ {
+ sdata = bfd_zalloc (abfd, sizeof (*sdata));
+ if (sdata == NULL)
+ return FALSE;
+ sec->used_by_bfd = sdata;
+ }
+
+ elf_section_type (sec) = SHT_NULL; + ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name); + if (ssect != NULL)
+ {
+ elf_section_type (sec) = ssect->type;
+ elf_section_flags (sec) = ssect->attr;
+ }
+
+ /* Indicate whether or not this section should use RELA relocations. */
+ sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p; +
+ return TRUE;
+}
+
+/* Create a new bfd section from an ELF program header.
+
+ Since program segments have no names, we generate a synthetic name + of the form segment<NUM>, where NUM is generally the index in the + program header table. For segments that are split (see below) we + generate the names segment<NUM>a and segment<NUM>b. + + Note that some program segments may have a file size that is different than + (less than) the memory size. All this means is that at execution the + system must allocate the amount of memory specified by the memory size, + but only initialize it with the first "file size" bytes read from the + file. This would occur for example, with program segments consisting + of combined data+bss. + + To handle the above situation, this routine generates TWO bfd sections + for the single program segment. The first has the length specified by + the file size of the segment, and the second has the length specified + by the difference between the two sizes. In effect, the segment is split + into it's initialized and uninitialized parts.
+
+ */
+
+bfd_boolean
+_bfd_elf_make_section_from_phdr (bfd *abfd,
+ Elf_Internal_Phdr *hdr,
+ int index,
+ const char *typename)
+{
+ asection *newsect; + char *name; + char namebuf[64]; + size_t len; + int split;
+
+ split = ((hdr->p_memsz > 0)
+ && (hdr->p_filesz > 0)
+ && (hdr->p_memsz > hdr->p_filesz));
+ sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : "");
+ len = strlen (namebuf) + 1;
+ name = bfd_alloc (abfd, len);
+ if (!name)
+ return FALSE;
+ memcpy (name, namebuf, len);
+ newsect = bfd_make_section (abfd, name);
+ if (newsect == NULL)
+ return FALSE;
+ newsect->vma = hdr->p_vaddr;
+ newsect->lma = hdr->p_paddr;
+ newsect->size = hdr->p_filesz;
+ newsect->filepos = hdr->p_offset;
+ newsect->flags |= SEC_HAS_CONTENTS;
+ newsect->alignment_power = bfd_log2 (hdr->p_align);
+ if (hdr->p_type == PT_LOAD)
+ {
+ newsect->flags |= SEC_ALLOC;
+ newsect->flags |= SEC_LOAD;
+ if (hdr->p_flags & PF_X)+ {
+ /* FIXME: all we known is that it has execute PERMISSION,
+ may be data. */
+ newsect->flags |= SEC_CODE;
+ }
+ }
+ if (!(hdr->p_flags & PF_W))
+ {
+ newsect->flags |= SEC_READONLY;
+ }
+
+ if (split)
+ {
+ sprintf (namebuf, "%s%db", typename, index); + len = strlen (namebuf) + 1; + name = bfd_alloc (abfd, len); + if (!name) + return FALSE; + memcpy (name, namebuf, len); + newsect = bfd_make_section (abfd, name); + if (newsect == NULL) + return FALSE; + newsect->vma = hdr->p_vaddr + hdr->p_filesz; + newsect->lma = hdr->p_paddr + hdr->p_filesz; + newsect->size = hdr->p_memsz - hdr->p_filesz; + if (hdr->p_type == PT_LOAD)
+ {
+ newsect->flags |= SEC_ALLOC;
+ if (hdr->p_flags & PF_X)
+ newsect->flags |= SEC_CODE;
+ }
+ if (!(hdr->p_flags & PF_W))
+ newsect->flags |= SEC_READONLY;
+ }
+
+ return TRUE;
+}
+
+bfd_boolean
+bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index) +{
+ const struct elf_backend_data *bed;
+
+ switch (hdr->p_type)
+ {
+ case PT_NULL:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null");
+
+ case PT_LOAD:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load");
+
+ case PT_DYNAMIC:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic");
+
+ case PT_INTERP:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp");
+
+ case PT_NOTE:
+ if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note"))
+ return FALSE;
+ if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz))
+ return FALSE;
+ return TRUE;
+
+ case PT_SHLIB:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib");
+
+ case PT_PHDR:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr");
+
+ case PT_GNU_EH_FRAME:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index,
+ "eh_frame_hdr");
+
+ case PT_GNU_STACK:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack");
+
+ case PT_GNU_RELRO:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro");
+
+ default:
+ /* Check for any processor-specific program segment types.
+ If no handler for them, default to making "segment" sections. */
+ bed = get_elf_backend_data (abfd);
+ if (bed->elf_backend_section_from_phdr)
+ return (*bed->elf_backend_section_from_phdr) (abfd, hdr, index);
+ else
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "segment");
+ }
+}
+
+/* Initialize REL_HDR, the section-header for new section, containing
+ relocations against ASECT. If USE_RELA_P is TRUE, we use RELA
+ relocations; otherwise, we use REL relocations. */
+
+bfd_boolean
+_bfd_elf_init_reloc_shdr (bfd *abfd,
+ Elf_Internal_Shdr *rel_hdr,
+ asection *asect,
+ bfd_boolean use_rela_p)
+{
+ char *name;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ bfd_size_type amt = sizeof ".rela" + strlen (asect->name);+
+ name = bfd_alloc (abfd, amt);
+ if (name == NULL)
+ return FALSE;
+ sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
+ rel_hdr->sh_name =
+ (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
+ FALSE);
+ if (rel_hdr->sh_name == (unsigned int) -1)
+ return FALSE;
+ rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
+ rel_hdr->sh_entsize = (use_rela_p
+ ? bed->s->sizeof_rela
+ : bed->s->sizeof_rel);
+ rel_hdr->sh_addralign = 1 << bed->s->log_file_align; + rel_hdr->sh_flags = 0; + rel_hdr->sh_addr = 0; + rel_hdr->sh_size = 0; + rel_hdr->sh_offset = 0;
+
+ return TRUE;
+}
+
+/* Set up an ELF internal section header for a section. */ +
+static void
+elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg) +{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd); + bfd_boolean *failedptr = failedptrarg; + Elf_Internal_Shdr *this_hdr;
+
+ if (*failedptr)
+ {
+ /* We already failed; just get out of the bfd_map_over_sections
+ loop. */
+ return;
+ }
+
+ this_hdr = &elf_section_data (asect)->this_hdr;
+
+ this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
+ asect->name, FALSE);
+ if (this_hdr->sh_name == (unsigned int) -1)
+ {
+ *failedptr = TRUE;
+ return;
+ }
+
+ this_hdr->sh_flags = 0;
+
+ if ((asect->flags & SEC_ALLOC) != 0
+ || asect->user_set_vma)
+ this_hdr->sh_addr = asect->vma;
+ else
+ this_hdr->sh_addr = 0;
+
+ this_hdr->sh_offset = 0; + this_hdr->sh_size = asect->size; + this_hdr->sh_link = 0; + this_hdr->sh_addralign = 1 << asect->alignment_power; + /* The sh_entsize and sh_info fields may have been set already by
+ copy_private_section_data. */
+
+ this_hdr->bfd_section = asect;
+ this_hdr->contents = NULL;
+
+ /* If the section type is unspecified, we set it based on
+ asect->flags. */
+ if (this_hdr->sh_type == SHT_NULL)
+ {
+ if ((asect->flags & SEC_GROUP) != 0)
+ {
+ /* We also need to mark SHF_GROUP here for relocatable
+ link. */
+ struct bfd_link_order *l;
+ asection *elt;
+
+ for (l = asect->link_order_head; l != NULL; l = l->next)
+ if (l->type == bfd_indirect_link_order
+ && (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
+ do
+ {
+ /* The name is not important. Anything will do. */ + elf_group_name (elt->output_section) = "G"; + elf_section_flags (elt->output_section) |= SHF_GROUP;
+
+ elt = elf_next_in_group (elt);
+ /* During a relocatable link, the lists are
+ circular. */
+ }
+ while (elt != elf_next_in_group (l->u.indirect.section));
+
+ this_hdr->sh_type = SHT_GROUP;
+ }
+ else if ((asect->flags & SEC_ALLOC) != 0
+ && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
+ || (asect->flags & SEC_NEVER_LOAD) != 0))
+ this_hdr->sh_type = SHT_NOBITS;
+ else
+ this_hdr->sh_type = SHT_PROGBITS;
+ }
+
+ switch (this_hdr->sh_type)
+ {
+ default:
+ break;
+
+ case SHT_STRTAB: + case SHT_INIT_ARRAY: + case SHT_FINI_ARRAY: + case SHT_PREINIT_ARRAY: + case SHT_NOTE: + case SHT_NOBITS: + case SHT_PROGBITS:
+ break;
+
+ case SHT_HASH:
+ this_hdr->sh_entsize = bed->s->sizeof_hash_entry;
+ break;
+
+ case SHT_DYNSYM:
+ this_hdr->sh_entsize = bed->s->sizeof_sym;
+ break;
+
+ case SHT_DYNAMIC:
+ this_hdr->sh_entsize = bed->s->sizeof_dyn;
+ break;
+
+ case SHT_RELA:
+ if (get_elf_backend_data (abfd)->may_use_rela_p)
+ this_hdr->sh_entsize = bed->s->sizeof_rela;
+ break;
+
+ case SHT_REL:
+ if (get_elf_backend_data (abfd)->may_use_rel_p)
+ this_hdr->sh_entsize = bed->s->sizeof_rel;
+ break;
+
+ case SHT_GNU_versym:
+ this_hdr->sh_entsize = sizeof (Elf_External_Versym);
+ break;
+
+ case SHT_GNU_verdef:
+ this_hdr->sh_entsize = 0;
+ /* objcopy or strip will copy over sh_info, but may not set
+ cverdefs. The linker will set cverdefs, but sh_info will be
+ zero. */
+ if (this_hdr->sh_info == 0)
+ this_hdr->sh_info = elf_tdata (abfd)->cverdefs;
+ else
+ BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0
+ || this_hdr->sh_info == elf_tdata (abfd)->cverdefs);
+ break;
+
+ case SHT_GNU_verneed:
+ this_hdr->sh_entsize = 0;
+ /* objcopy or strip will copy over sh_info, but may not set
+ cverrefs. The linker will set cverrefs, but sh_info will be
+ zero. */
+ if (this_hdr->sh_info == 0)
+ this_hdr->sh_info = elf_tdata (abfd)->cverrefs;
+ else
+ BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0
+ || this_hdr->sh_info == elf_tdata (abfd)->cverrefs);
+ break;
+
+ case SHT_GROUP:
+ this_hdr->sh_entsize = 4;
+ break;
+ }
+
+ if ((asect->flags & SEC_ALLOC) != 0)
+ this_hdr->sh_flags |= SHF_ALLOC;
+ if ((asect->flags & SEC_READONLY) == 0)
+ this_hdr->sh_flags |= SHF_WRITE;
+ if ((asect->flags & SEC_CODE) != 0)
+ this_hdr->sh_flags |= SHF_EXECINSTR;
+ if ((asect->flags & SEC_MERGE) != 0)
+ {
+ this_hdr->sh_flags |= SHF_MERGE; + this_hdr->sh_entsize = asect->entsize; + if ((asect->flags & SEC_STRINGS) != 0)
+ this_hdr->sh_flags |= SHF_STRINGS;
+ }
+ if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL)
+ this_hdr->sh_flags |= SHF_GROUP;
+ if ((asect->flags & SEC_THREAD_LOCAL) != 0)
+ {
+ this_hdr->sh_flags |= SHF_TLS;
+ if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0)
+ {
+ struct bfd_link_order *o;
+
+ this_hdr->sh_size = 0;
+ for (o = asect->link_order_head; o != NULL; o = o->next)
+ if (this_hdr->sh_size < o->offset + o->size)
+ this_hdr->sh_size = o->offset + o->size;
+ if (this_hdr->sh_size)
+ this_hdr->sh_type = SHT_NOBITS;
+ }
+ }
+
+ /* Check for processor-specific section types. */
+ if (bed->elf_backend_fake_sections
+ && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect))
+ *failedptr = TRUE;
+
+ /* If the section has relocs, set up a section header for the
+ SHT_REL[A] section. If two relocation sections are required for + this section, it is up to the processor-specific back-end to + create the other. */ + if ((asect->flags & SEC_RELOC) != 0 + && !_bfd_elf_init_reloc_shdr (abfd, + &elf_section_data (asect)->rel_hdr, + asect, + asect->use_rela_p))
+ *failedptr = TRUE;
+}
+
+/* Fill in the contents of a SHT_GROUP section. */
+
+void
+bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg) +{
+ bfd_boolean *failedptr = failedptrarg; + unsigned long symindx; + asection *elt, *first; + unsigned char *loc; + struct bfd_link_order *l; + bfd_boolean gas;
+
+ if (elf_section_data (sec)->this_hdr.sh_type != SHT_GROUP
+ || *failedptr)
+ return;
+
+ symindx = 0;
+ if (elf_group_id (sec) != NULL)
+ symindx = elf_group_id (sec)->udata.i;
+
+ if (symindx == 0)
+ {
+ /* If called from the assembler, swap_out_syms will have set up
+ elf_section_syms; If called for "ld -r", use target_index. */
+ if (elf_section_syms (abfd) != NULL)
+ symindx = elf_section_syms (abfd)[sec->index]->udata.i;
+ else
+ symindx = sec->target_index;
+ }
+ elf_section_data (sec)->this_hdr.sh_info = symindx; +
+ /* The contents won't be allocated for "ld -r" or objcopy. */ + gas = TRUE; + if (sec->contents == NULL)
+ {
+ gas = FALSE;
+ sec->contents = bfd_alloc (abfd, sec->size);
+
+ /* Arrange for the section to be written out. */ + elf_section_data (sec)->this_hdr.contents = sec->contents; + if (sec->contents == NULL)
+ {
+ *failedptr = TRUE;
+ return;
+ }
+ }
+
+ loc = sec->contents + sec->size;
+
+ /* Get the pointer to the first section in the group that gas
+ squirreled away here. objcopy arranges for this to be set to the
+ start of the input section group. */
+ first = elt = elf_next_in_group (sec);
+
+ /* First element is a flag word. Rest of section is elf section
+ indices for all the sections of the group. Write them backwards + just to keep the group in the same order as given in .section + directives, not that it matters. */
+ while (elt != NULL)
+ {
+ asection *s;
+ unsigned int idx;
+
+ loc -= 4; + s = elt; + if (!gas)
+ s = s->output_section;
+ idx = 0;
+ if (s != NULL)
+ idx = elf_section_data (s)->this_idx;
+ H_PUT_32 (abfd, idx, loc); + elt = elf_next_in_group (elt); + if (elt == first)
+ break;
+ }
+
+ /* If this is a relocatable link, then the above did nothing because
+ SEC is the output section. Look through the input sections
+ instead. */
+ for (l = sec->link_order_head; l != NULL; l = l->next)
+ if (l->type == bfd_indirect_link_order
+ && (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
+ do
+ {
+ loc -= 4;
+ H_PUT_32 (abfd,
+ elf_section_data (elt->output_section)->this_idx, loc);
+ elt = elf_next_in_group (elt);
+ /* During a relocatable link, the lists are circular. */
+ }
+ while (elt != elf_next_in_group (l->u.indirect.section));
+
+ /* With ld -r, merging SHT_GROUP sections results in wasted space
+ due to allowing for the flag word on each input. We may well
+ duplicate entries too. */
+ while ((loc -= 4) > sec->contents)
+ H_PUT_32 (abfd, 0, loc);
+
+ if (loc != sec->contents)
+ abort ();
+
+ H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc); +}
+
+/* Assign all ELF section numbers. The dummy first section is handled here
+ too. The link/info pointers for the standard section types are filled
+ in here too, while we're at it. */
+
+static bfd_boolean
+assign_section_numbers (bfd *abfd)
+{
+ struct elf_obj_tdata *t = elf_tdata (abfd); + asection *sec; + unsigned int section_number, secn; + Elf_Internal_Shdr **i_shdrp; + bfd_size_type amt;
+
+ section_number = 1;
+
+ _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd)); +
+ for (sec = abfd->sections; sec; sec = sec->next)
+ {
+ struct bfd_elf_section_data *d = elf_section_data (sec);
+
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ d->this_idx = section_number++; + _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name); + if ((sec->flags & SEC_RELOC) == 0)
+ d->rel_idx = 0;
+ else
+ {
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ d->rel_idx = section_number++;
+ _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name);
+ }
+
+ if (d->rel_hdr2)
+ {
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ d->rel_idx2 = section_number++;
+ _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name);
+ }
+ else
+ d->rel_idx2 = 0;
+ }
+
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ t->shstrtab_section = section_number++; + _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name); + elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
+
+ if (bfd_get_symcount (abfd) > 0)
+ {
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ t->symtab_section = section_number++; + _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name); + if (section_number > SHN_LORESERVE - 2)
+ {
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ t->symtab_shndx_section = section_number++;
+ t->symtab_shndx_hdr.sh_name
+ = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
+ ".symtab_shndx", FALSE);
+ if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1)
+ return FALSE;
+ }
+ if (section_number == SHN_LORESERVE)
+ section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ t->strtab_section = section_number++;
+ _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name);
+ }
+
+ _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
+ t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); +
+ elf_numsections (abfd) = section_number; + elf_elfheader (abfd)->e_shnum = section_number; + if (section_number > SHN_LORESERVE)
+ elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE;
+
+ /* Set up the list of section header pointers, in agreement with the
+ indices. */
+ amt = section_number * sizeof (Elf_Internal_Shdr *); + i_shdrp = bfd_zalloc (abfd, amt); + if (i_shdrp == NULL) + return FALSE; + + amt = sizeof (Elf_Internal_Shdr); + i_shdrp[0] = bfd_zalloc (abfd, amt); + if (i_shdrp[0] == NULL)
+ {
+ bfd_release (abfd, i_shdrp);
+ return FALSE;
+ }
+
+ elf_elfsections (abfd) = i_shdrp;
+
+ i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
+ if (bfd_get_symcount (abfd) > 0)
+ {
+ i_shdrp[t->symtab_section] = &t->symtab_hdr;
+ if (elf_numsections (abfd) > SHN_LORESERVE)
+ {
+ i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr;
+ t->symtab_shndx_hdr.sh_link = t->symtab_section;
+ }
+ i_shdrp[t->strtab_section] = &t->strtab_hdr;
+ t->symtab_hdr.sh_link = t->strtab_section;
+ }
+ for (sec = abfd->sections; sec; sec = sec->next)
+ {
+ struct bfd_elf_section_data *d = elf_section_data (sec); + asection *s; + const char *name;
+
+ i_shdrp[d->this_idx] = &d->this_hdr;
+ if (d->rel_idx != 0)
+ i_shdrp[d->rel_idx] = &d->rel_hdr;
+ if (d->rel_idx2 != 0)
+ i_shdrp[d->rel_idx2] = d->rel_hdr2;
+
+ /* Fill in the sh_link and sh_info fields while we're at it. */
+
+ /* sh_link of a reloc section is the section index of the symbol
+ table. sh_info is the section index of the section to which
+ the relocation entries apply. */
+ if (d->rel_idx != 0)
+ {
+ d->rel_hdr.sh_link = t->symtab_section;
+ d->rel_hdr.sh_info = d->this_idx;
+ }
+ if (d->rel_idx2 != 0)
+ {
+ d->rel_hdr2->sh_link = t->symtab_section;
+ d->rel_hdr2->sh_info = d->this_idx;
+ }
+
+ switch (d->this_hdr.sh_type)
+ {
+ case SHT_REL:
+ case SHT_RELA:
+ /* A reloc section which we are treating as a normal BFD
+ section. sh_link is the section index of the symbol + table. sh_info is the section index of the section to + which the relocation entries apply. We assume that an + allocated reloc section uses the dynamic symbol table. + FIXME: How can we be sure? */
+ s = bfd_get_section_by_name (abfd, ".dynsym");
+ if (s != NULL)
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+
+ /* We look up the section the relocs apply to by name. */ + name = sec->name; + if (d->this_hdr.sh_type == SHT_REL)
+ name += 4;
+ else
+ name += 5;
+ s = bfd_get_section_by_name (abfd, name);
+ if (s != NULL)
+ d->this_hdr.sh_info = elf_section_data (s)->this_idx;
+ break;
+
+ case SHT_STRTAB:
+ /* We assume that a section named .stab*str is a stabs
+ string section. We look for a section with the same name + but without the trailing ``str'', and set its sh_link + field to point to this section. */
+ if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0
+ && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
+ {
+ size_t len;
+ char *alc;
+
+ len = strlen (sec->name); + alc = bfd_malloc (len - 2); + if (alc == NULL) + return FALSE; + memcpy (alc, sec->name, len - 3); + alc[len - 3] = '\0'; + s = bfd_get_section_by_name (abfd, alc); + free (alc); + if (s != NULL)
+ {
+ elf_section_data (s)->this_hdr.sh_link = d->this_idx;
+
+ /* This is a .stab section. */
+ if (elf_section_data (s)->this_hdr.sh_entsize == 0)
+ elf_section_data (s)->this_hdr.sh_entsize
+ = 4 + 2 * bfd_get_arch_size (abfd) / 8;
+ }
+ }
+ break;
+
+ case SHT_DYNAMIC:
+ case SHT_DYNSYM:
+ case SHT_GNU_verneed:
+ case SHT_GNU_verdef:
+ /* sh_link is the section header index of the string table
+ used for the dynamic entries, or the symbol table, or the
+ version strings. */
+ s = bfd_get_section_by_name (abfd, ".dynstr");
+ if (s != NULL)
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+ break;
+
+ case SHT_HASH:
+ case SHT_GNU_versym:
+ /* sh_link is the section header index of the symbol table
+ this hash table or version table is for. */
+ s = bfd_get_section_by_name (abfd, ".dynsym");
+ if (s != NULL)
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+ break;
+
+ case SHT_GROUP:
+ d->this_hdr.sh_link = t->symtab_section;
+ }
+ }
+
+ for (secn = 1; secn < section_number; ++secn)
+ if (i_shdrp[secn] == NULL)
+ i_shdrp[secn] = i_shdrp[0];
+ else
+ i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
+ i_shdrp[secn]->sh_name);
+ return TRUE;
+}
+
+/* Map symbol from it's internal number to the external number, moving
+ all local symbols to be at the head of the list. */
+
+static int
+sym_is_global (bfd *abfd, asymbol *sym)
+{
+ /* If the backend has a special mapping, use it. */ + const struct elf_backend_data *bed = get_elf_backend_data (abfd); + if (bed->elf_backend_sym_is_global) + return (*bed->elf_backend_sym_is_global) (abfd, sym); + + return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 + || bfd_is_und_section (bfd_get_section (sym)) + || bfd_is_com_section (bfd_get_section (sym)));
+}
+
+static bfd_boolean
+elf_map_symbols (bfd *abfd)
+{
+ unsigned int symcount = bfd_get_symcount (abfd); + asymbol **syms = bfd_get_outsymbols (abfd); + asymbol **sect_syms; + unsigned int num_locals = 0; + unsigned int num_globals = 0; + unsigned int num_locals2 = 0; + unsigned int num_globals2 = 0; + int max_index = 0; + unsigned int idx; + asection *asect; + asymbol **new_syms; + bfd_size_type amt;
+
+#ifdef DEBUG
+ fprintf (stderr, "elf_map_symbols\n");
+ fflush (stderr);
+#endif
+
+ for (asect = abfd->sections; asect; asect = asect->next)
+ {
+ if (max_index < asect->index)
+ max_index = asect->index;
+ }
+
+ max_index++; + amt = max_index * sizeof (asymbol *); + sect_syms = bfd_zalloc (abfd, amt); + if (sect_syms == NULL)
+ return FALSE;
+ elf_section_syms (abfd) = sect_syms;
+ elf_num_section_syms (abfd) = max_index;
+
+ /* Init sect_syms entries for any section symbols we have already
+ decided to output. */
+ for (idx = 0; idx < symcount; idx++)
+ {
+ asymbol *sym = syms[idx];
+
+ if ((sym->flags & BSF_SECTION_SYM) != 0
+ && sym->value == 0)
+ {
+ asection *sec;
+
+ sec = sym->section;
+
+ if (sec->owner != NULL)
+ {
+ if (sec->owner != abfd)
+ {
+ if (sec->output_offset != 0)
+ continue;
+
+ sec = sec->output_section;
+
+ /* Empty sections in the input files may have had a
+ section symbol created for them. (See the comment + near the end of _bfd_generic_link_output_symbols in + linker.c). If the linker script discards such + sections then we will reach this point. Since we know + that we cannot avoid this case, we detect it and skip + the abort and the assignment to the sect_syms array. + To reproduce this particular case try running the + linker testsuite test ld-scripts/weak.exp for an ELF + port that uses the generic linker. */
+ if (sec->owner == NULL)
+ continue;
+
+ BFD_ASSERT (sec->owner == abfd);
+ }
+ sect_syms[sec->index] = syms[idx];
+ }
+ }
+ }
+
+ /* Classify all of the symbols. */
+ for (idx = 0; idx < symcount; idx++)
+ {
+ if (!sym_is_global (abfd, syms[idx]))
+ num_locals++;
+ else
+ num_globals++;
+ }
+
+ /* We will be adding a section symbol for each BFD section. Most normal
+ sections will already have a section symbol in outsymbols, but + eg. SHT_GROUP sections will not, and we need the section symbol mapped + at least in that case. */
+ for (asect = abfd->sections; asect; asect = asect->next)
+ {
+ if (sect_syms[asect->index] == NULL)
+ {
+ if (!sym_is_global (abfd, asect->symbol))
+ num_locals++;
+ else
+ num_globals++;
+ }
+ }
+
+ /* Now sort the symbols so the local symbols are first. */ + amt = (num_locals + num_globals) * sizeof (asymbol *); + new_syms = bfd_alloc (abfd, amt);
+
+ if (new_syms == NULL)
+ return FALSE;
+
+ for (idx = 0; idx < symcount; idx++)
+ {
+ asymbol *sym = syms[idx];
+ unsigned int i;
+
+ if (!sym_is_global (abfd, sym))
+ i = num_locals2++;
+ else
+ i = num_locals + num_globals2++;
+ new_syms[i] = sym;
+ sym->udata.i = i + 1;
+ }
+ for (asect = abfd->sections; asect; asect = asect->next)
+ {
+ if (sect_syms[asect->index] == NULL)
+ {
+ asymbol *sym = asect->symbol;
+ unsigned int i;
+
+ sect_syms[asect->index] = sym;
+ if (!sym_is_global (abfd, sym))
+ i = num_locals2++;
+ else
+ i = num_locals + num_globals2++;
+ new_syms[i] = sym;
+ sym->udata.i = i + 1;
+ }
+ }
+
+ bfd_set_symtab (abfd, new_syms, num_locals + num_globals); +
+ elf_num_locals (abfd) = num_locals; + elf_num_globals (abfd) = num_globals; + return TRUE;
+}
+
+/* Align to the maximum file alignment that could be required for any
+ ELF data structure. */
+
+static inline file_ptr
+align_file_position (file_ptr off, int align)
+{
+ return (off + align - 1) & ~(align - 1);
+}
+
+/* Assign a file position to a section, optionally aligning to the
+ required section alignment. */
+
+file_ptr
+_bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp,
+ file_ptr offset,
+ bfd_boolean align)
+{
+ if (align)
+ {
+ unsigned int al;
+
+ al = i_shdrp->sh_addralign;
+ if (al > 1)
+ offset = BFD_ALIGN (offset, al);
+ }
+ i_shdrp->sh_offset = offset;
+ if (i_shdrp->bfd_section != NULL)
+ i_shdrp->bfd_section->filepos = offset;
+ if (i_shdrp->sh_type != SHT_NOBITS)
+ offset += i_shdrp->sh_size;
+ return offset;
+}
+
+/* Compute the file positions we are going to put the sections at, and
+ otherwise prepare to begin writing out the ELF file. If LINK_INFO
+ is not NULL, this is being called by the ELF backend linker. */
+
+bfd_boolean
+_bfd_elf_compute_section_file_positions (bfd *abfd,
+ struct bfd_link_info *link_info)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd); + bfd_boolean failed; + struct bfd_strtab_hash *strtab; + Elf_Internal_Shdr *shstrtab_hdr;
+
+ if (abfd->output_has_begun)
+ return TRUE;
+
+ /* Do any elf backend specific processing first. */
+ if (bed->elf_backend_begin_write_processing)
+ (*bed->elf_backend_begin_write_processing) (abfd, link_info);
+
+ if (! prep_headers (abfd))
+ return FALSE;
+
+ /* Post process the headers if necessary. */
+ if (bed->elf_backend_post_process_headers)
+ (*bed->elf_backend_post_process_headers) (abfd, link_info);
+
+ failed = FALSE; + bfd_map_over_sections (abfd, elf_fake_sections, &failed); + if (failed)
+ return FALSE;
+
+ if (!assign_section_numbers (abfd))
+ return FALSE;
+
+ /* The backend linker builds symbol table information itself. */
+ if (link_info == NULL && bfd_get_symcount (abfd) > 0)
+ {
+ /* Non-zero if doing a relocatable link. */
+ int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));
+
+ if (! swap_out_syms (abfd, &strtab, relocatable_p))
+ return FALSE;
+ }
+
+ if (link_info == NULL)
+ {
+ bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
+ if (failed)
+ return FALSE;
+ }
+
+ shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr; + /* sh_name was set in prep_headers. */ + shstrtab_hdr->sh_type = SHT_STRTAB; + shstrtab_hdr->sh_flags = 0; + shstrtab_hdr->sh_addr = 0; + shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd)); + shstrtab_hdr->sh_entsize = 0; + shstrtab_hdr->sh_link = 0; + shstrtab_hdr->sh_info = 0; + /* sh_offset is set in assign_file_positions_except_relocs. */ + shstrtab_hdr->sh_addralign = 1;
+
+ if (!assign_file_positions_except_relocs (abfd, link_info))
+ return FALSE;
+
+ if (link_info == NULL && bfd_get_symcount (abfd) > 0)
+ {
+ file_ptr off;
+ Elf_Internal_Shdr *hdr;
+
+ off = elf_tdata (abfd)->next_file_pos;
+
+ hdr = &elf_tdata (abfd)->symtab_hdr;
+ off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
+
+ hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
+ if (hdr->sh_size != 0)
+ off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
+
+ hdr = &elf_tdata (abfd)->strtab_hdr;
+ off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
+
+ elf_tdata (abfd)->next_file_pos = off;
+
+ /* Now that we know where the .strtab section goes, write it
+ out. */
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
+ || ! _bfd_stringtab_emit (abfd, strtab))
+ return FALSE;
+ _bfd_stringtab_free (strtab);
+ }
+
+ abfd->output_has_begun = TRUE;
+
+ return TRUE;
+}
+
+/* Create a mapping from a set of sections to a program segment. */ +
+static struct elf_segment_map *
+make_mapping (bfd *abfd,
+ asection **sections,
+ unsigned int from,
+ unsigned int to,
+ bfd_boolean phdr)
+{
+ struct elf_segment_map *m;
+ unsigned int i;
+ asection **hdrpp;
+ bfd_size_type amt;
+
+ amt = sizeof (struct elf_segment_map);
+ amt += (to - from - 1) * sizeof (asection *);
+ m = bfd_zalloc (abfd, amt);
+ if (m == NULL)
+ return NULL;
+ m->next = NULL;
+ m->p_type = PT_LOAD;
+ for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++)+ m->sections[i - from] = *hdrpp;
+ m->count = to - from;
+
+ if (from == 0 && phdr)
+ {
+ /* Include the headers in the first PT_LOAD segment. */ + m->includes_filehdr = 1; + m->includes_phdrs = 1;
+ }
+
+ return m;
+}
+
+/* Set up a mapping from BFD sections to program segments. */ +
+static bfd_boolean
+map_sections_to_segments (bfd *abfd)
+{
+ asection **sections = NULL; + asection *s; + unsigned int i; + unsigned int count; + struct elf_segment_map *mfirst; + struct elf_segment_map **pm; + struct elf_segment_map *m; + asection *last_hdr; + bfd_vma last_size; + unsigned int phdr_index; + bfd_vma maxpagesize; + asection **hdrpp; + bfd_boolean phdr_in_segment = TRUE; + bfd_boolean writable; + int tls_count = 0; + asection *first_tls = NULL; + asection *dynsec, *eh_frame_hdr; + bfd_size_type amt;
+
+ if (elf_tdata (abfd)->segment_map != NULL)
+ return TRUE;
+
+ if (bfd_count_sections (abfd) == 0)
+ return TRUE;
+
+ /* Select the allocated sections, and sort them. */ +
+ amt = bfd_count_sections (abfd) * sizeof (asection *); + sections = bfd_malloc (amt); + if (sections == NULL)
+ goto error_return;
+
+ i = 0;
+ for (s = abfd->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_ALLOC) != 0)
+ {
+ sections[i] = s;
+ ++i;
+ }
+ }
+ BFD_ASSERT (i <= bfd_count_sections (abfd));
+ count = i;
+
+ qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections); +
+ /* Build the mapping. */
+
+ mfirst = NULL;
+ pm = &mfirst;
+
+ /* If we have a .interp section, then create a PT_PHDR segment for
+ the program headers and a PT_INTERP segment for the .interp
+ section. */
+ s = bfd_get_section_by_name (abfd, ".interp");
+ if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ {
+ amt = sizeof (struct elf_segment_map); + m = bfd_zalloc (abfd, amt); + if (m == NULL) + goto error_return; + m->next = NULL; + m->p_type = PT_PHDR; + /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */ + m->p_flags = PF_R | PF_X; + m->p_flags_valid = 1; + m->includes_phdrs = 1;
+
+ *pm = m;
+ pm = &m->next;
+
+ amt = sizeof (struct elf_segment_map); + m = bfd_zalloc (abfd, amt); + if (m == NULL) + goto error_return; + m->next = NULL; + m->p_type = PT_INTERP; + m->count = 1; + m->sections[0] = s;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
+ /* Look through the sections. We put sections in the same program
+ segment when the start of the second section can be placed within
+ a few bytes of the end of the first section. */
+ last_hdr = NULL; + last_size = 0; + phdr_index = 0; + maxpagesize = get_elf_backend_data (abfd)->maxpagesize; + writable = FALSE; + dynsec = bfd_get_section_by_name (abfd, ".dynamic"); + if (dynsec != NULL
+ && (dynsec->flags & SEC_LOAD) == 0)
+ dynsec = NULL;
+
+ /* Deal with -Ttext or something similar such that the first section
+ is not adjacent to the program headers. This is an + approximation, since at this point we don't know exactly how many + program headers we will need. */
+ if (count > 0)
+ {
+ bfd_size_type phdr_size;
+
+ phdr_size = elf_tdata (abfd)->program_header_size;
+ if (phdr_size == 0)
+ phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr;
+ if ((abfd->flags & D_PAGED) == 0
+ || sections[0]->lma < phdr_size + || sections[0]->lma % maxpagesize < phdr_size % maxpagesize)
+ phdr_in_segment = FALSE;
+ }
+
+ for (i = 0, hdrpp = sections; i < count; i++, hdrpp++)
+ {
+ asection *hdr;
+ bfd_boolean new_segment;
+
+ hdr = *hdrpp;
+
+ /* See if this section and the last one will fit in the same
+ segment. */
+
+ if (last_hdr == NULL)
+ {
+ /* If we don't have a segment yet, then we don't need a new
+ one (we build the last one after this loop). */
+ new_segment = FALSE;
+ }
+ else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma)
+ {
+ /* If this section has a different relation between the
+ virtual address and the load address, then we need a new
+ segment. */
+ new_segment = TRUE;
+ }
+ else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize)
+ < BFD_ALIGN (hdr->lma, maxpagesize))
+ {
+ /* If putting this section in this segment would force us to
+ skip a page in the segment, then we need a new segment. */
+ new_segment = TRUE;
+ }
+ else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0
+ && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0)
+ {
+ /* We don't want to put a loadable section after a
+ nonloadable section in the same segment.
+ Consider .tbss sections as loadable for this purpose. */
+ new_segment = TRUE;
+ }
+ else if ((abfd->flags & D_PAGED) == 0)
+ {
+ /* If the file is not demand paged, which means that we
+ don't require the sections to be correctly aligned in the
+ file, then there is no other reason for a new segment. */
+ new_segment = FALSE;
+ }
+ else if (! writable
+ && (hdr->flags & SEC_READONLY) == 0
+ && (((last_hdr->lma + last_size - 1)
+ & ~(maxpagesize - 1))
+ != (hdr->lma & ~(maxpagesize - 1))))
+ {
+ /* We don't want to put a writable section in a read only
+ segment, unless they are on the same page in memory + anyhow. We already know that the last section does not + bring us past the current section on the page, so the + only case in which the new section is not on the same + page as the previous section is when the previous section + ends precisely on a page boundary. */
+ new_segment = TRUE;
+ }
+ else
+ {
+ /* Otherwise, we can use the same segment. */
+ new_segment = FALSE;
+ }
+
+ if (! new_segment)
+ {
+ if ((hdr->flags & SEC_READONLY) == 0)
+ writable = TRUE;
+ last_hdr = hdr; + /* .tbss sections effectively have zero size. */ + if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
+ last_size = hdr->size;
+ else
+ last_size = 0;
+ continue;
+ }
+
+ /* We need a new program segment. We must create a new program
+ header holding all the sections from phdr_index until hdr. */
+
+ m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
+ if (m == NULL)
+ goto error_return;
+
+ *pm = m;
+ pm = &m->next;
+
+ if ((hdr->flags & SEC_READONLY) == 0)
+ writable = TRUE;
+ else
+ writable = FALSE;
+
+ last_hdr = hdr; + /* .tbss sections effectively have zero size. */ + if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
+ last_size = hdr->size;
+ else
+ last_size = 0;
+ phdr_index = i;
+ phdr_in_segment = FALSE;
+ }
+
+ /* Create a final PT_LOAD program segment. */
+ if (last_hdr != NULL)
+ {
+ m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
+ if (m == NULL)
+ goto error_return;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
+ /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
+ if (dynsec != NULL)
+ {
+ amt = sizeof (struct elf_segment_map); + m = bfd_zalloc (abfd, amt); + if (m == NULL) + goto error_return; + m->next = NULL; + m->p_type = PT_DYNAMIC; + m->count = 1; + m->sections[0] = dynsec;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
+ /* For each loadable .note section, add a PT_NOTE segment. We don't
+ use bfd_get_section_by_name, because if we link together + nonloadable .note sections and loadable .note sections, we will + generate two .note sections in the output file. FIXME: Using + names for section types is bogus anyhow. */
+ for (s = abfd->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LOAD) != 0
+ && strncmp (s->name, ".note", 5) == 0)
+ {
+ amt = sizeof (struct elf_segment_map); + m = bfd_zalloc (abfd, amt); + if (m == NULL) + goto error_return; + m->next = NULL; + m->p_type = PT_NOTE; + m->count = 1; + m->sections[0] = s;
+
+ *pm = m;
+ pm = &m->next;
+ }
+ if (s->flags & SEC_THREAD_LOCAL)
+ {
+ if (! tls_count)
+ first_tls = s;
+ tls_count++;
+ }
+ }
+
+ /* If there are any SHF_TLS output sections, add PT_TLS segment. */
+ if (tls_count > 0)
+ {
+ int i;
+
+ amt = sizeof (struct elf_segment_map);
+ amt += (tls_count - 1) * sizeof (asection *);
+ m = bfd_zalloc (abfd, amt);
+ if (m == NULL)
+ goto error_return;
+ m->next = NULL;
+ m->p_type = PT_TLS;
+ m->count = tls_count;
+ /* Mandated PF_R. */
+ m->p_flags = PF_R;
+ m->p_flags_valid = 1;
+ for (i = 0; i < tls_count; ++i)
+ {
+ BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL);
+ m->sections[i] = first_tls;
+ first_tls = first_tls->next;+ }
+
+ *pm = m;
+ pm = &m->next;
+ }
+
+ /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
+ segment. */
+ eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr;
+ if (eh_frame_hdr != NULL
+ && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0)
+ {
+ amt = sizeof (struct elf_segment_map); + m = bfd_zalloc (abfd, amt); + if (m == NULL) + goto error_return; + m->next = NULL; + m->p_type = PT_GNU_EH_FRAME; + m->count = 1; + m->sections[0] = eh_frame_hdr->output_section;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
+ if (elf_tdata (abfd)->stack_flags)
+ {
+ amt = sizeof (struct elf_segment_map); + m = bfd_zalloc (abfd, amt); + if (m == NULL) + goto error_return; + m->next = NULL; + m->p_type = PT_GNU_STACK; + m->p_flags = elf_tdata (abfd)->stack_flags; + m->p_flags_valid = 1;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
+ if (elf_tdata (abfd)->relro)
+ {
+ amt = sizeof (struct elf_segment_map); + m = bfd_zalloc (abfd, amt); + if (m == NULL) + goto error_return; + m->next = NULL; + m->p_type = PT_GNU_RELRO; + m->p_flags = PF_R; + m->p_flags_valid = 1;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
+ free (sections);
+ sections = NULL;
+
+ elf_tdata (abfd)->segment_map = mfirst;
+ return TRUE;
+
+ error_return:
+ if (sections != NULL)
+ free (sections);
+ return FALSE;
+}
+
+/* Sort sections by address. */
+
+static int
+elf_sort_sections (const void *arg1, const void *arg2) +{
+ const asection *sec1 = *(const asection **) arg1; + const asection *sec2 = *(const asection **) arg2; + bfd_size_type size1, size2;
+
+ /* Sort by LMA first, since this is the address used to
+ place the section into a segment. */
+ if (sec1->lma < sec2->lma)
+ return -1;
+ else if (sec1->lma > sec2->lma)
+ return 1;
+
+ /* Then sort by VMA. Normally the LMA and the VMA will be
+ the same, and this will do nothing. */
+ if (sec1->vma < sec2->vma)
+ return -1;
+ else if (sec1->vma > sec2->vma)
+ return 1;
+
+ /* Put !SEC_LOAD sections after SEC_LOAD ones. */
+
+#define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0) +
+ if (TOEND (sec1))
+ {
+ if (TOEND (sec2))
+ {
+ /* If the indicies are the same, do not return 0
+ here, but continue to try the next comparison. */
+ if (sec1->target_index - sec2->target_index != 0)
+ return sec1->target_index - sec2->target_index;
+ }
+ else
+ return 1;
+ }
+ else if (TOEND (sec2))
+ return -1;
+
+#undef TOEND
+
+ /* Sort by size, to put zero sized sections
+ before others at the same address. */
+
+ size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0;
+ size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0;
+
+ if (size1 < size2)
+ return -1;
+ if (size1 > size2)
+ return 1;
+
+ return sec1->target_index - sec2->target_index;
+}
+
+/* Ian Lance Taylor writes:
+
+ We shouldn't be using % with a negative signed number. That's just + not good. We have to make sure either that the number is not + negative, or that the number has an unsigned type. When the types + are all the same size they wind up as unsigned. When file_ptr is a + larger signed type, the arithmetic winds up as signed long long, + which is wrong. + + What we're trying to say here is something like ``increase OFF by + the least amount that will cause it to be equal to the VMA modulo + the page size.'' */ +/* In other words, something like: + + vma_offset = m->sections[0]->vma % bed->maxpagesize; + off_offset = off % bed->maxpagesize; + if (vma_offset < off_offset)
+ adjustment = vma_offset + bed->maxpagesize - off_offset;
+ else
+ adjustment = vma_offset - off_offset;
+
+ which can can be collapsed into the expression below. */
+
+static file_ptr
+vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize) +{
+ return ((vma - off) % maxpagesize);
+}
+
+/* Assign file positions to the sections based on the mapping from
+ sections to segments. This function also sets up some fields in
+ the file header, and writes out the program headers. */
+
+static bfd_boolean
+assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info) +{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd); + unsigned int count; + struct elf_segment_map *m; + unsigned int alloc; + Elf_Internal_Phdr *phdrs; + file_ptr off, voff; + bfd_vma filehdr_vaddr, filehdr_paddr; + bfd_vma phdrs_vaddr, phdrs_paddr; + Elf_Internal_Phdr *p; + bfd_size_type amt;
+
+ if (elf_tdata (abfd)->segment_map == NULL)
+ {
+ if (! map_sections_to_segments (abfd))
+ return FALSE;
+ }
+ else
+ {
+ /* The placement algorithm assumes that non allocated sections are
+ not in PT_LOAD segments. We ensure this here by removing such
+ sections from the segment map. */
+ for (m = elf_tdata (abfd)->segment_map;
+ m != NULL;
+ m = m->next)
+ {
+ unsigned int new_count;
+ unsigned int i;
+
+ if (m->p_type != PT_LOAD)
+ continue;
+
+ new_count = 0;
+ for (i = 0; i < m->count; i ++)
+ {
+ if ((m->sections[i]->flags & SEC_ALLOC) != 0)
+ {
+ if (i != new_count)
+ m->sections[new_count] = m->sections[i];
+
+ new_count ++;
+ }
+ }
+
+ if (new_count != m->count)
+ m->count = new_count;
+ }
+ }
+
+ if (bed->elf_backend_modify_segment_map)
+ {
+ if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info))
+ return FALSE;
+ }
+
+ count = 0;
+ for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ ++count;
+
+ elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr; + elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr; + elf_elfheader (abfd)->e_phnum = count;
+
+ if (count == 0)
+ return TRUE;
+
+ /* If we already counted the number of program segments, make sure
+ that we allocated enough space. This happens when SIZEOF_HEADERS
+ is used in a linker script. */
+ alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr;
+ if (alloc != 0 && count > alloc)
+ {
+ ((*_bfd_error_handler)
+ (_("%s: Not enough room for program headers (allocated %u, need %u)"),
+ bfd_get_filename (abfd), alloc, count));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ if (alloc == 0)
+ alloc = count;
+
+ amt = alloc * sizeof (Elf_Internal_Phdr); + phdrs = bfd_alloc (abfd, amt); + if (phdrs == NULL)
+ return FALSE;
+
+ off = bed->s->sizeof_ehdr;
+ off += alloc * bed->s->sizeof_phdr;
+
+ filehdr_vaddr = 0; + filehdr_paddr = 0; + phdrs_vaddr = 0; + phdrs_paddr = 0;
+
+ for (m = elf_tdata (abfd)->segment_map, p = phdrs;
+ m != NULL;
+ m = m->next, p++)
+ {
+ unsigned int i;
+ asection **secpp;
+
+ /* If elf_segment_map is not from map_sections_to_segments, the
+ sections may not be correctly ordered. NOTE: sorting should
+ not be done to the PT_NOTE section of a corefile, which may
+ contain several pseudo-sections artificially created by bfd.
+ Sorting these pseudo-sections breaks things badly. */
+ if (m->count > 1
+ && !(elf_elfheader (abfd)->e_type == ET_CORE
+ && m->p_type == PT_NOTE))
+ qsort (m->sections, (size_t) m->count, sizeof (asection *),
+ elf_sort_sections);
+
+ p->p_type = m->p_type;
+ p->p_flags = m->p_flags;
+
+ if (p->p_type == PT_LOAD
+ && m->count > 0
+ && (m->sections[0]->flags & SEC_ALLOC) != 0)
+ {
+ if ((abfd->flags & D_PAGED) != 0)
+ off += vma_page_aligned_bias (m->sections[0]->vma, off,
+ bed->maxpagesize);
+ else
+ {
+ bfd_size_type align;
+
+ align = 0;
+ for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
+ {
+ bfd_size_type secalign;
+
+ secalign = bfd_get_section_alignment (abfd, *secpp);
+ if (secalign > align)
+ align = secalign;
+ }
+
+ off += vma_page_aligned_bias (m->sections[0]->vma, off,
+ 1 << align);
+ }
+ }
+ /* Make sure the .dynamic section is the first section in the
+ PT_DYNAMIC segment. */
+ else if (p->p_type == PT_DYNAMIC
+ && m->count > 1
+ && strcmp (m->sections[0]->name, ".dynamic") != 0)
+ {
+ _bfd_error_handler
+ (_("%s: The first section in the PT_DYNAMIC segment is not the .dynamic section"),
+ bfd_get_filename (abfd));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ if (m->count == 0)
+ p->p_vaddr = 0;
+ else
+ p->p_vaddr = m->sections[0]->vma;
+
+ if (m->p_paddr_valid)
+ p->p_paddr = m->p_paddr;
+ else if (m->count == 0)
+ p->p_paddr = 0;
+ else
+ p->p_paddr = m->sections[0]->lma;
+
+ if (p->p_type == PT_LOAD
+ && (abfd->flags & D_PAGED) != 0)
+ p->p_align = bed->maxpagesize;
+ else if (m->count == 0)
+ p->p_align = 1 << bed->s->log_file_align;
+ else
+ p->p_align = 0;
+
+ p->p_offset = 0; + p->p_filesz = 0; + p->p_memsz = 0;
+
+ if (m->includes_filehdr)
+ {
+ if (! m->p_flags_valid)
+ p->p_flags |= PF_R;
+ p->p_offset = 0; + p->p_filesz = bed->s->sizeof_ehdr; + p->p_memsz = bed->s->sizeof_ehdr; + if (m->count > 0)
+ {
+ BFD_ASSERT (p->p_type == PT_LOAD);
+
+ if (p->p_vaddr < (bfd_vma) off)
+ {
+ (*_bfd_error_handler)
+ (_("%s: Not enough room for program headers, try linking with -N"),
+ bfd_get_filename (abfd));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ p->p_vaddr -= off;
+ if (! m->p_paddr_valid)
+ p->p_paddr -= off;
+ }
+ if (p->p_type == PT_LOAD)
+ {
+ filehdr_vaddr = p->p_vaddr;
+ filehdr_paddr = p->p_paddr;
+ }
+ }
+
+ if (m->includes_phdrs)
+ {
+ if (! m->p_flags_valid)
+ p->p_flags |= PF_R;
+
+ if (m->includes_filehdr)
+ {
+ if (p->p_type == PT_LOAD)
+ {
+ phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr;
+ phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr;
+ }
+ }
+ else
+ {
+ p->p_offset = bed->s->sizeof_ehdr;
+
+ if (m->count > 0)
+ {
+ BFD_ASSERT (p->p_type == PT_LOAD); + p->p_vaddr -= off - p->p_offset; + if (! m->p_paddr_valid)
+ p->p_paddr -= off - p->p_offset;
+ }
+
+ if (p->p_type == PT_LOAD)
+ {
+ phdrs_vaddr = p->p_vaddr;
+ phdrs_paddr = p->p_paddr;
+ }
+ else
+ phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr;
+ }
+
+ p->p_filesz += alloc * bed->s->sizeof_phdr;
+ p->p_memsz += alloc * bed->s->sizeof_phdr;
+ }
+
+ if (p->p_type == PT_LOAD
+ || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
+ {
+ if (! m->includes_filehdr && ! m->includes_phdrs)
+ p->p_offset = off;
+ else
+ {
+ file_ptr adjust;
+
+ adjust = off - (p->p_offset + p->p_filesz); + p->p_filesz += adjust; + p->p_memsz += adjust;
+ }
+ }
+
+ voff = off;
+
+ for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
+ {
+ asection *sec; + flagword flags; + bfd_size_type align; + + sec = *secpp; + flags = sec->flags; + align = 1 << bfd_get_section_alignment (abfd, sec);
+
+ /* The section may have artificial alignment forced by a
+ link script. Notice this case by the gap between the
+ cumulative phdr lma and the section's lma. */
+ if (p->p_paddr + p->p_memsz < sec->lma)
+ {
+ bfd_vma adjust = sec->lma - (p->p_paddr + p->p_memsz);
+
+ p->p_memsz += adjust;
+ if (p->p_type == PT_LOAD
+ || (p->p_type == PT_NOTE
+ && bfd_get_format (abfd) == bfd_core))
+ {
+ off += adjust;
+ voff += adjust;
+ }
+ if ((flags & SEC_LOAD) != 0
+ || (flags & SEC_THREAD_LOCAL) != 0)
+ p->p_filesz += adjust;
+ }
+
+ if (p->p_type == PT_LOAD)
+ {
+ bfd_signed_vma adjust;
+
+ if ((flags & SEC_LOAD) != 0)
+ {
+ adjust = sec->lma - (p->p_paddr + p->p_memsz);
+ if (adjust < 0)
+ adjust = 0;
+ }
+ else if ((flags & SEC_ALLOC) != 0)
+ {
+ /* The section VMA must equal the file position
+ modulo the page size. FIXME: I'm not sure if + this adjustment is really necessary. We used to + not have the SEC_LOAD case just above, and then + this was necessary, but now I'm not sure. */
+ if ((abfd->flags & D_PAGED) != 0)
+ adjust = vma_page_aligned_bias (sec->vma, voff,
+ bed->maxpagesize);
+ else
+ adjust = vma_page_aligned_bias (sec->vma, voff,
+ align);
+ }
+ else
+ adjust = 0;
+
+ if (adjust != 0)
+ {
+ if (i == 0)
+ {
+ (* _bfd_error_handler) (_("\
+Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
+ bfd_section_name (abfd, sec), + sec->lma, + p->p_paddr); + return FALSE; + } + p->p_memsz += adjust; + off += adjust; + voff += adjust; + if ((flags & SEC_LOAD) != 0)
+ p->p_filesz += adjust;
+ }
+
+ sec->filepos = off;
+
+ /* We check SEC_HAS_CONTENTS here because if NOLOAD is
+ used in a linker script we may have a section with + SEC_LOAD clear but which is supposed to have + contents. */
+ if ((flags & SEC_LOAD) != 0
+ || (flags & SEC_HAS_CONTENTS) != 0)
+ off += sec->size;
+
+ if ((flags & SEC_ALLOC) != 0
+ && ((flags & SEC_LOAD) != 0
+ || (flags & SEC_THREAD_LOCAL) == 0))
+ voff += sec->size;
+ }
+
+ if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
+ {
+ /* The actual "note" segment has i == 0.
+ This is the one that actually contains everything. */
+ if (i == 0)
+ {
+ sec->filepos = off;
+ p->p_filesz = sec->size;
+ off += sec->size;
+ voff = off;
+ }
+ else
+ {
+ /* Fake sections -- don't need to be written. */
+ sec->filepos = 0;
+ sec->size = 0;
+ flags = sec->flags = 0;+ }
+ p->p_memsz = 0;
+ p->p_align = 1;
+ }
+ else
+ {
+ if ((sec->flags & SEC_LOAD) != 0
+ || (sec->flags & SEC_THREAD_LOCAL) == 0 + || p->p_type == PT_TLS)
+ p->p_memsz += sec->size;
+
+ if ((flags & SEC_LOAD) != 0)
+ p->p_filesz += sec->size;
+
+ if (p->p_type == PT_TLS
+ && sec->size == 0
+ && (sec->flags & SEC_HAS_CONTENTS) == 0)
+ {
+ struct bfd_link_order *o;
+ bfd_vma tbss_size = 0;
+
+ for (o = sec->link_order_head; o != NULL; o = o->next)
+ if (tbss_size < o->offset + o->size)
+ tbss_size = o->offset + o->size;
+
+ p->p_memsz += tbss_size;
+ }
+
+ if (align > p->p_align
+ && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0))
+ p->p_align = align;
+ }
+
+ if (! m->p_flags_valid)
+ {
+ p->p_flags |= PF_R;
+ if ((flags & SEC_CODE) != 0)
+ p->p_flags |= PF_X;
+ if ((flags & SEC_READONLY) == 0)
+ p->p_flags |= PF_W;
+ }
+ }
+ }
+
+ /* Now that we have set the section file positions, we can set up
+ the file positions for the non PT_LOAD segments. */
+ for (m = elf_tdata (abfd)->segment_map, p = phdrs;
+ m != NULL;
+ m = m->next, p++)
+ {
+ if (p->p_type != PT_LOAD && m->count > 0)
+ {
+ BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs);
+ p->p_offset = m->sections[0]->filepos;
+ }
+ if (m->count == 0)
+ {
+ if (m->includes_filehdr)
+ {
+ p->p_vaddr = filehdr_vaddr;
+ if (! m->p_paddr_valid)
+ p->p_paddr = filehdr_paddr;
+ }
+ else if (m->includes_phdrs)
+ {
+ p->p_vaddr = phdrs_vaddr;
+ if (! m->p_paddr_valid)
+ p->p_paddr = phdrs_paddr;
+ }
+ else if (p->p_type == PT_GNU_RELRO)
+ {
+ Elf_Internal_Phdr *lp;
+
+ for (lp = phdrs; lp < phdrs + count; ++lp)
+ {
+ if (lp->p_type == PT_LOAD
+ && lp->p_vaddr <= link_info->relro_end + && lp->p_vaddr >= link_info->relro_start + && lp->p_vaddr + lp->p_filesz
+ >= link_info->relro_end)
+ break;
+ }
+
+ if (lp < phdrs + count
+ && link_info->relro_end > lp->p_vaddr)
+ {
+ p->p_vaddr = lp->p_vaddr; + p->p_paddr = lp->p_paddr; + p->p_offset = lp->p_offset; + p->p_filesz = link_info->relro_end - lp->p_vaddr; + p->p_memsz = p->p_filesz; + p->p_align = 1; + p->p_flags = (lp->p_flags & ~PF_W);
+ }
+ else
+ {
+ memset (p, 0, sizeof *p);
+ p->p_type = PT_NULL;
+ }
+ }
+ }
+ }
+
+ /* Clear out any program headers we allocated but did not use. */
+ for (; count < alloc; count++, p++)
+ {
+ memset (p, 0, sizeof *p);
+ p->p_type = PT_NULL;
+ }
+
+ elf_tdata (abfd)->phdr = phdrs;
+
+ elf_tdata (abfd)->next_file_pos = off;
+
+ /* Write out the program headers. */
+ if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0
+ || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+/* Get the size of the program header.
+
+ If this is called by the linker before any of the section VMA's are set, it + can't calculate the correct value for a strange memory layout. This only + happens when SIZEOF_HEADERS is used in a linker script. In this case, + SORTED_HDRS is NULL and we assume the normal scenario of one text and one + data segment (exclusive of .interp and .dynamic).
+
+ ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
+ will be two segments. */
+
+static bfd_size_type
+get_program_header_size (bfd *abfd)
+{
+ size_t segs; + asection *s; + const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ /* We can't return a different result each time we're called. */
+ if (elf_tdata (abfd)->program_header_size != 0)
+ return elf_tdata (abfd)->program_header_size;
+
+ if (elf_tdata (abfd)->segment_map != NULL)
+ {
+ struct elf_segment_map *m;
+
+ segs = 0;
+ for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ ++segs;
+ elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
+ return elf_tdata (abfd)->program_header_size;
+ }
+
+ /* Assume we will need exactly two PT_LOAD segments: one for text
+ and one for data. */
+ segs = 2;
+
+ s = bfd_get_section_by_name (abfd, ".interp");
+ if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ {
+ /* If we have a loadable interpreter section, we need a
+ PT_INTERP segment. In this case, assume we also need a
+ PT_PHDR segment, although that may not be true for all
+ targets. */
+ segs += 2;
+ }
+
+ if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
+ {
+ /* We need a PT_DYNAMIC segment. */
+ ++segs;
+ }
+
+ if (elf_tdata (abfd)->eh_frame_hdr)
+ {
+ /* We need a PT_GNU_EH_FRAME segment. */
+ ++segs;
+ }
+
+ if (elf_tdata (abfd)->stack_flags)
+ {
+ /* We need a PT_GNU_STACK segment. */
+ ++segs;
+ }
+
+ if (elf_tdata (abfd)->relro)
+ {
+ /* We need a PT_GNU_RELRO segment. */
+ ++segs;
+ }
+
+ for (s = abfd->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LOAD) != 0
+ && strncmp (s->name, ".note", 5) == 0)
+ {
+ /* We need a PT_NOTE segment. */
+ ++segs;
+ }
+ }
+
+ for (s = abfd->sections; s != NULL; s = s->next)
+ {
+ if (s->flags & SEC_THREAD_LOCAL)
+ {
+ /* We need a PT_TLS segment. */ + ++segs; + break;
+ }
+ }
+
+ /* Let the backend count up any program headers it might need. */
+ if (bed->elf_backend_additional_program_headers)
+ {
+ int a;
+
+ a = (*bed->elf_backend_additional_program_headers) (abfd);
+ if (a == -1)
+ abort ();
+ segs += a;
+ }
+
+ elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
+ return elf_tdata (abfd)->program_header_size;
+}
+
+/* Work out the file positions of all the sections. This is called by
+ _bfd_elf_compute_section_file_positions. All the section sizes and
+ VMAs must be known before this is called.
+
+ We do not consider reloc sections at this point, unless they form + part of the loadable image. Reloc sections are assigned file + positions in assign_file_positions_for_relocs, which is called by + write_object_contents and final_link.
+
+ We also don't set the positions of the .symtab and .strtab here. */
+
+static bfd_boolean
+assign_file_positions_except_relocs (bfd *abfd,
+ struct bfd_link_info *link_info)
+{
+ struct elf_obj_tdata * const tdata = elf_tdata (abfd); + Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd); + Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd); + unsigned int num_sec = elf_numsections (abfd); + file_ptr off; + const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
+ && bfd_get_format (abfd) != bfd_core)
+ {
+ Elf_Internal_Shdr **hdrpp;
+ unsigned int i;
+
+ /* Start after the ELF header. */
+ off = i_ehdrp->e_ehsize;
+
+ /* We are not creating an executable, which means that we are
+ not creating a program header, and that the actual order of
+ the sections in the file is unimportant. */
+ for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
+ {
+ Elf_Internal_Shdr *hdr;
+
+ hdr = *hdrpp;
+ if (hdr->sh_type == SHT_REL
+ || hdr->sh_type == SHT_RELA + || i == tdata->symtab_section + || i == tdata->symtab_shndx_section + || i == tdata->strtab_section)
+ {
+ hdr->sh_offset = -1;
+ }
+ else
+ off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
+
+ if (i == SHN_LORESERVE - 1)
+ {
+ i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ }
+ }
+ }
+ else
+ {
+ unsigned int i;
+ Elf_Internal_Shdr **hdrpp;
+
+ /* Assign file positions for the loaded sections based on the
+ assignment of sections to segments. */
+ if (! assign_file_positions_for_segments (abfd, link_info))
+ return FALSE;
+
+ /* Assign file positions for the other sections. */
+
+ off = elf_tdata (abfd)->next_file_pos;
+ for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
+ {
+ Elf_Internal_Shdr *hdr;
+
+ hdr = *hdrpp;
+ if (hdr->bfd_section != NULL
+ && hdr->bfd_section->filepos != 0)
+ hdr->sh_offset = hdr->bfd_section->filepos;
+ else if ((hdr->sh_flags & SHF_ALLOC) != 0)
+ {
+ ((*_bfd_error_handler)
+ (_("%s: warning: allocated section `%s' not in segment"),
+ bfd_get_filename (abfd),
+ (hdr->bfd_section == NULL
+ ? "*unknown*"
+ : hdr->bfd_section->name)));
+ if ((abfd->flags & D_PAGED) != 0)
+ off += vma_page_aligned_bias (hdr->sh_addr, off,
+ bed->maxpagesize);
+ else
+ off += vma_page_aligned_bias (hdr->sh_addr, off,
+ hdr->sh_addralign);
+ off = _bfd_elf_assign_file_position_for_section (hdr, off,
+ FALSE);
+ }
+ else if (hdr->sh_type == SHT_REL
+ || hdr->sh_type == SHT_RELA + || hdr == i_shdrpp[tdata->symtab_section] + || hdr == i_shdrpp[tdata->symtab_shndx_section] + || hdr == i_shdrpp[tdata->strtab_section]) + hdr->sh_offset = -1;
+ else
+ off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
+
+ if (i == SHN_LORESERVE - 1)
+ {
+ i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ }
+ }
+ }
+
+ /* Place the section headers. */ + off = align_file_position (off, 1 << bed->s->log_file_align); + i_ehdrp->e_shoff = off; + off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
+
+ elf_tdata (abfd)->next_file_pos = off;
+
+ return TRUE;
+}
+
+static bfd_boolean
+prep_headers (bfd *abfd)
+{
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ + Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */ + Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ + struct elf_strtab_hash *shstrtab; + const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ i_ehdrp = elf_elfheader (abfd);
+ i_shdrp = elf_elfsections (abfd);
+
+ shstrtab = _bfd_elf_strtab_init ();
+ if (shstrtab == NULL)
+ return FALSE;
+
+ elf_shstrtab (abfd) = shstrtab;
+
+ i_ehdrp->e_ident[EI_MAG0] = ELFMAG0; + i_ehdrp->e_ident[EI_MAG1] = ELFMAG1; + i_ehdrp->e_ident[EI_MAG2] = ELFMAG2; + i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
+
+ i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
+ i_ehdrp->e_ident[EI_DATA] =
+ bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB;
+ i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current; +
+ if ((abfd->flags & DYNAMIC) != 0)
+ i_ehdrp->e_type = ET_DYN;
+ else if ((abfd->flags & EXEC_P) != 0)
+ i_ehdrp->e_type = ET_EXEC;
+ else if (bfd_get_format (abfd) == bfd_core)
+ i_ehdrp->e_type = ET_CORE;
+ else
+ i_ehdrp->e_type = ET_REL;
+
+ switch (bfd_get_arch (abfd))
+ {
+ case bfd_arch_unknown:
+ i_ehdrp->e_machine = EM_NONE;
+ break;
+
+ /* There used to be a long list of cases here, each one setting
+ e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
+ in the corresponding bfd definition. To avoid duplication,
+ the switch was removed. Machines that need special handling
+ can generally do it in elf_backend_final_write_processing(),
+ unless they need the information earlier than the final write.
+ Such need can generally be supplied by replacing the tests for
+ e_machine with the conditions used to determine it. */
+ default:
+ i_ehdrp->e_machine = bed->elf_machine_code;
+ }
+
+ i_ehdrp->e_version = bed->s->ev_current;
+ i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
+
+ /* No program header, for now. */ + i_ehdrp->e_phoff = 0; + i_ehdrp->e_phentsize = 0; + i_ehdrp->e_phnum = 0; + + /* Each bfd section is section header entry. */ + i_ehdrp->e_entry = bfd_get_start_address (abfd); + i_ehdrp->e_shentsize = bed->s->sizeof_shdr;
+
+ /* If we're building an executable, we'll need a program header table. */
+ if (abfd->flags & EXEC_P)
+ {
+ /* It all happens later. */
+#if 0
+ i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
+
+ /* elf_build_phdrs() returns a (NULL-terminated) array of
+ Elf_Internal_Phdrs. */
+ i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum); + i_ehdrp->e_phoff = outbase; + outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
+#endif
+ }
+ else
+ {
+ i_ehdrp->e_phentsize = 0; + i_phdrp = 0; + i_ehdrp->e_phoff = 0;
+ }
+
+ elf_tdata (abfd)->symtab_hdr.sh_name =
+ (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE);
+ elf_tdata (abfd)->strtab_hdr.sh_name =
+ (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE);
+ elf_tdata (abfd)->shstrtab_hdr.sh_name =
+ (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE);
+ if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
+ || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1 + || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
+ return FALSE;
+
+ return TRUE;
+}
+
+/* Assign file positions for all the reloc sections which are not part
+ of the loadable file image. */
+
+void
+_bfd_elf_assign_file_positions_for_relocs (bfd *abfd)
+{
+ file_ptr off; + unsigned int i, num_sec; + Elf_Internal_Shdr **shdrpp;
+
+ off = elf_tdata (abfd)->next_file_pos;
+
+ num_sec = elf_numsections (abfd);
+ for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++)
+ {
+ Elf_Internal_Shdr *shdrp;
+
+ shdrp = *shdrpp;
+ if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
+ && shdrp->sh_offset == -1)
+ off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE);
+ }
+
+ elf_tdata (abfd)->next_file_pos = off;
+}
+
+bfd_boolean
+_bfd_elf_write_object_contents (bfd *abfd)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd); + Elf_Internal_Ehdr *i_ehdrp; + Elf_Internal_Shdr **i_shdrp; + bfd_boolean failed; + unsigned int count, num_sec;
+
+ if (! abfd->output_has_begun
+ && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
+ return FALSE;
+
+ i_shdrp = elf_elfsections (abfd);
+ i_ehdrp = elf_elfheader (abfd);
+
+ failed = FALSE; + bfd_map_over_sections (abfd, bed->s->write_relocs, &failed); + if (failed)
+ return FALSE;
+
+ _bfd_elf_assign_file_positions_for_relocs (abfd); +
+ /* After writing the headers, we need to write the sections too... */ + num_sec = elf_numsections (abfd); + for (count = 1; count < num_sec; count++)
+ {
+ if (bed->elf_backend_section_processing)
+ (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
+ if (i_shdrp[count]->contents)
+ {
+ bfd_size_type amt = i_shdrp[count]->sh_size;
+
+ if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
+ || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt)
+ return FALSE;
+ }
+ if (count == SHN_LORESERVE - 1)
+ count += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ }
+
+ /* Write out the section header names. */
+ if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
+ || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))
+ return FALSE;
+
+ if (bed->elf_backend_final_write_processing)
+ (*bed->elf_backend_final_write_processing) (abfd,
+ elf_tdata (abfd)->linker);
+
+ return bed->s->write_shdrs_and_ehdr (abfd);
+}
+
+bfd_boolean
+_bfd_elf_write_corefile_contents (bfd *abfd)
+{
+ /* Hopefully this can be done just like an object file. */
+ return _bfd_elf_write_object_contents (abfd);
+}
+
+/* Given a section, search the header to find them. */
+
+int
+_bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect) +{
+ const struct elf_backend_data *bed;
+ int index;
+
+ if (elf_section_data (asect) != NULL
+ && elf_section_data (asect)->this_idx != 0)
+ return elf_section_data (asect)->this_idx;
+
+ if (bfd_is_abs_section (asect))
+ index = SHN_ABS;
+ else if (bfd_is_com_section (asect))
+ index = SHN_COMMON;
+ else if (bfd_is_und_section (asect))
+ index = SHN_UNDEF;
+ else
+ {
+ Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
+ int maxindex = elf_numsections (abfd);
+
+ for (index = 1; index < maxindex; index++)
+ {
+ Elf_Internal_Shdr *hdr = i_shdrp[index];
+
+ if (hdr != NULL && hdr->bfd_section == asect)
+ return index;
+ }
+ index = -1;
+ }
+
+ bed = get_elf_backend_data (abfd);
+ if (bed->elf_backend_section_from_bfd_section)
+ {
+ int retval = index;
+
+ if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval))
+ return retval;
+ }
+
+ if (index == -1)
+ bfd_set_error (bfd_error_nonrepresentable_section);
+
+ return index;
+}
+
+/* Given a BFD symbol, return the index in the ELF symbol table, or -1
+ on error. */
+
+int
+_bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr) +{
+ asymbol *asym_ptr = *asym_ptr_ptr; + int idx; + flagword flags = asym_ptr->flags; + + /* When gas creates relocations against local labels, it creates its + own symbol for the section, but does put the symbol into the + symbol chain, so udata is 0. When the linker is generating + relocatable output, this section symbol may be for one of the + input sections rather than the output section. */
+ if (asym_ptr->udata.i == 0
+ && (flags & BSF_SECTION_SYM)
+ && asym_ptr->section)
+ {
+ int indx;
+
+ if (asym_ptr->section->output_section != NULL)
+ indx = asym_ptr->section->output_section->index;
+ else
+ indx = asym_ptr->section->index;
+ if (indx < elf_num_section_syms (abfd)
+ && elf_section_syms (abfd)[indx] != NULL)
+ asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i;
+ }
+
+ idx = asym_ptr->udata.i;
+
+ if (idx == 0)
+ {
+ /* This case can occur when using --strip-symbol on a symbol
+ which is used in a relocation entry. */
+ (*_bfd_error_handler)
+ (_("%s: symbol `%s' required but not present"),
+ bfd_archive_filename (abfd), bfd_asymbol_name (asym_ptr));
+ bfd_set_error (bfd_error_no_symbols);
+ return -1;
+ }
+
+#if DEBUG & 4
+ {
+ fprintf (stderr,
+ "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n", + (long) asym_ptr, asym_ptr->name, idx, flags, + elf_symbol_flags (flags));
+ fflush (stderr);
+ }
+#endif
+
+ return idx;
+}
+
+/* Copy private BFD data. This copies any program header information. */ +
+static bfd_boolean
+copy_private_bfd_data (bfd *ibfd, bfd *obfd)
+{
+ Elf_Internal_Ehdr *iehdr; + struct elf_segment_map *map; + struct elf_segment_map *map_first; + struct elf_segment_map **pointer_to_map; + Elf_Internal_Phdr *segment; + asection *section; + unsigned int i; + unsigned int num_segments; + bfd_boolean phdr_included = FALSE; + bfd_vma maxpagesize; + struct elf_segment_map *phdr_adjust_seg = NULL; + unsigned int phdr_adjust_num = 0; + const struct elf_backend_data *bed;
+
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ if (elf_tdata (ibfd)->phdr == NULL)
+ return TRUE;
+
+ bed = get_elf_backend_data (ibfd);
+ iehdr = elf_elfheader (ibfd);
+
+ map_first = NULL;
+ pointer_to_map = &map_first;
+
+ num_segments = elf_elfheader (ibfd)->e_phnum;
+ maxpagesize = get_elf_backend_data (obfd)->maxpagesize;
+
+ /* Returns the end address of the segment + 1. */
+#define SEGMENT_END(segment, start) \
+ (start + (segment->p_memsz > segment->p_filesz \
+ ? segment->p_memsz : segment->p_filesz))
+
+#define SECTION_SIZE(section, segment) \
+ (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \
+ != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \
+ ? section->size : 0)
+
+ /* Returns TRUE if the given section is contained within
+ the given segment. VMA addresses are compared. */
+#define IS_CONTAINED_BY_VMA(section, segment) \
+ (section->vma >= segment->p_vaddr \
+ && (section->vma + SECTION_SIZE (section, segment) \
+ <= (SEGMENT_END (segment, segment->p_vaddr))))
+
+ /* Returns TRUE if the given section is contained within
+ the given segment. LMA addresses are compared. */
+#define IS_CONTAINED_BY_LMA(section, segment, base) \
+ (section->lma >= base \
+ && (section->lma + SECTION_SIZE (section, segment) \
+ <= SEGMENT_END (segment, base)))
+
+ /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
+#define IS_COREFILE_NOTE(p, s) \
+ (p->p_type == PT_NOTE \
+ && bfd_get_format (ibfd) == bfd_core \ + && s->vma == 0 && s->lma == 0 \ + && (bfd_vma) s->filepos >= p->p_offset \ + && ((bfd_vma) s->filepos + s->size \
+ <= p->p_offset + p->p_filesz))
+
+ /* The complicated case when p_vaddr is 0 is to handle the Solaris
+ linker, which generates a PT_INTERP section with p_vaddr and
+ p_memsz set to 0. */
+#define IS_SOLARIS_PT_INTERP(p, s) \
+ (p->p_vaddr == 0 \
+ && p->p_paddr == 0 \ + && p->p_memsz == 0 \ + && p->p_filesz > 0 \ + && (s->flags & SEC_HAS_CONTENTS) != 0 \ + && s->size > 0 \ + && (bfd_vma) s->filepos >= p->p_offset \ + && ((bfd_vma) s->filepos + s->size \
+ <= p->p_offset + p->p_filesz))
+
+ /* Decide if the given section should be included in the given segment.
+ A section will be included if:
+ 1. It is within the address space of the segment -- we use the LMA
+ if that is set for the segment and the VMA otherwise,
+ 2. It is an allocated segment, + 3. There is an output section associated with it, + 4. The section has not already been allocated to a previous segment. + 5. PT_GNU_STACK segments do not include any sections. + 6. PT_TLS segment includes only SHF_TLS sections. + 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. */
+#define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
+ ((((segment->p_paddr \
+ ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
+ : IS_CONTAINED_BY_VMA (section, segment)) \
+ && (section->flags & SEC_ALLOC) != 0) \
+ || IS_COREFILE_NOTE (segment, section)) \
+ && section->output_section != NULL \ + && segment->p_type != PT_GNU_STACK \ + && (segment->p_type != PT_TLS \ + || (section->flags & SEC_THREAD_LOCAL)) \ + && (segment->p_type == PT_LOAD \ + || segment->p_type == PT_TLS \ + || (section->flags & SEC_THREAD_LOCAL) == 0) \
+ && ! section->segment_mark)
+
+ /* Returns TRUE iff seg1 starts after the end of seg2. */
+#define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \
+ (seg1->field >= SEGMENT_END (seg2, seg2->field))
+
+ /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both
+ their VMA address ranges and their LMA address ranges overlap. + It is possible to have overlapping VMA ranges without overlapping LMA + ranges. RedBoot images for example can have both .data and .bss mapped + to the same VMA range, but with the .data section mapped to a different + LMA. */
+#define SEGMENT_OVERLAPS(seg1, seg2) \
+ ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \
+ || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \
+ && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \
+ || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr)))
+
+ /* Initialise the segment mark field. */
+ for (section = ibfd->sections; section != NULL; section = section->next)
+ section->segment_mark = FALSE;
+
+ /* Scan through the segments specified in the program header
+ of the input BFD. For this first scan we look for overlaps + in the loadable segments. These can be created by weird + parameters to objcopy. Also, fix some solaris weirdness. */
+ for (i = 0, segment = elf_tdata (ibfd)->phdr;
+ i < num_segments;
+ i++, segment++)
+ {
+ unsigned int j;
+ Elf_Internal_Phdr *segment2;
+
+ if (segment->p_type == PT_INTERP)
+ for (section = ibfd->sections; section; section = section->next)
+ if (IS_SOLARIS_PT_INTERP (segment, section))
+ {
+ /* Mininal change so that the normal section to segment
+ assignment code will work. */
+ segment->p_vaddr = section->vma;
+ break;
+ }
+
+ if (segment->p_type != PT_LOAD)
+ continue;
+
+ /* Determine if this segment overlaps any previous segments. */
+ for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++)
+ {
+ bfd_signed_vma extra_length;
+
+ if (segment2->p_type != PT_LOAD
+ || ! SEGMENT_OVERLAPS (segment, segment2))
+ continue;
+
+ /* Merge the two segments together. */
+ if (segment2->p_vaddr < segment->p_vaddr)
+ {
+ /* Extend SEGMENT2 to include SEGMENT and then delete
+ SEGMENT. */
+ extra_length =
+ SEGMENT_END (segment, segment->p_vaddr)
+ - SEGMENT_END (segment2, segment2->p_vaddr);
+
+ if (extra_length > 0)
+ {
+ segment2->p_memsz += extra_length;
+ segment2->p_filesz += extra_length;
+ }
+
+ segment->p_type = PT_NULL;
+
+ /* Since we have deleted P we must restart the outer loop. */ + i = 0; + segment = elf_tdata (ibfd)->phdr; + break;
+ }
+ else
+ {
+ /* Extend SEGMENT to include SEGMENT2 and then delete
+ SEGMENT2. */
+ extra_length =
+ SEGMENT_END (segment2, segment2->p_vaddr)
+ - SEGMENT_END (segment, segment->p_vaddr);
+
+ if (extra_length > 0)
+ {
+ segment->p_memsz += extra_length;
+ segment->p_filesz += extra_length;
+ }
+
+ segment2->p_type = PT_NULL;
+ }
+ }
+ }
+
+ /* The second scan attempts to assign sections to segments. */
+ for (i = 0, segment = elf_tdata (ibfd)->phdr;
+ i < num_segments;
+ i ++, segment ++)
+ {
+ unsigned int section_count; + asection ** sections; + asection * output_section; + unsigned int isec; + bfd_vma matching_lma; + bfd_vma suggested_lma; + unsigned int j; + bfd_size_type amt;
+
+ if (segment->p_type == PT_NULL)
+ continue;
+
+ /* Compute how many sections might be placed into this segment. */
+ for (section = ibfd->sections, section_count = 0;
+ section != NULL;
+ section = section->next)
+ if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
+ ++section_count;
+
+ /* Allocate a segment map big enough to contain
+ all of the sections we have selected. */
+ amt = sizeof (struct elf_segment_map); + amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); + map = bfd_alloc (obfd, amt); + if (map == NULL)
+ return FALSE;
+
+ /* Initialise the fields of the segment map. Default to
+ using the physical address of the segment in the input BFD. */
+ map->next = NULL; + map->p_type = segment->p_type; + map->p_flags = segment->p_flags; + map->p_flags_valid = 1; + map->p_paddr = segment->p_paddr; + map->p_paddr_valid = 1;
+
+ /* Determine if this segment contains the ELF file header
+ and if it contains the program headers themselves. */
+ map->includes_filehdr = (segment->p_offset == 0
+ && segment->p_filesz >= iehdr->e_ehsize);
+
+ map->includes_phdrs = 0;
+
+ if (! phdr_included || segment->p_type != PT_LOAD)
+ {
+ map->includes_phdrs =
+ (segment->p_offset <= (bfd_vma) iehdr->e_phoff
+ && (segment->p_offset + segment->p_filesz
+ >= ((bfd_vma) iehdr->e_phoff
+ + iehdr->e_phnum * iehdr->e_phentsize)));
+
+ if (segment->p_type == PT_LOAD && map->includes_phdrs)
+ phdr_included = TRUE;
+ }
+
+ if (section_count == 0)
+ {
+ /* Special segments, such as the PT_PHDR segment, may contain
+ no sections, but ordinary, loadable segments should contain + something. They are allowed by the ELF spec however, so only + a warning is produced. */
+ if (segment->p_type == PT_LOAD)
+ (*_bfd_error_handler)
+ (_("%s: warning: Empty loadable segment detected, is this intentional ?\n"),
+ bfd_archive_filename (ibfd));
+
+ map->count = 0; + *pointer_to_map = map; + pointer_to_map = &map->next;
+
+ continue;
+ }
+
+ /* Now scan the sections in the input BFD again and attempt
+ to add their corresponding output sections to the segment map.
+ The problem here is how to handle an output section which has
+ been moved (ie had its LMA changed). There are four possibilities:
+
+ 1. None of the sections have been moved.
+ In this case we can continue to use the segment LMA from the
+ input BFD.
+
+ 2. All of the sections have been moved by the same amount.
+ In this case we can change the segment's LMA to match the LMA
+ of the first section.
+
+ 3. Some of the sections have been moved, others have not.
+ In this case those sections which have not been moved can be + placed in the current segment which will have to have its size, + and possibly its LMA changed, and a new segment or segments will + have to be created to contain the other sections. + + 4. The sections have been moved, but not by the same amount. + In this case we can change the segment's LMA to match the LMA + of the first section and we will have to create a new segment + or segments to contain the other sections.
+
+ In order to save time, we allocate an array to hold the section
+ pointers that we are interested in. As these sections get assigned
+ to a segment, they are removed from this array. */
+
+ /* Gcc 2.96 miscompiles this code on mips. Don't do casting here
+ to work around this long long bug. */
+ amt = section_count * sizeof (asection *); + sections = bfd_malloc (amt); + if (sections == NULL)
+ return FALSE;
+
+ /* Step One: Scan for segment vs section LMA conflicts.
+ Also add the sections to the section array allocated above.
+ Also add the sections to the current segment. In the common
+ case, where the sections have not been moved, this means that
+ we have completely filled the segment, and there is nothing
+ more to do. */
+ isec = 0; + matching_lma = 0; + suggested_lma = 0;
+
+ for (j = 0, section = ibfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
+ {
+ output_section = section->output_section;
+
+ sections[j ++] = section;
+
+ /* The Solaris native linker always sets p_paddr to 0.
+ We try to catch that case here, and set it to the
+ correct value. Note - some backends require that
+ p_paddr be left as zero. */
+ if (segment->p_paddr == 0
+ && segment->p_vaddr != 0 + && (! bed->want_p_paddr_set_to_zero) + && isec == 0 + && output_section->lma != 0 + && (output_section->vma == (segment->p_vaddr
+ + (map->includes_filehdr
+ ? iehdr->e_ehsize
+ : 0)
+ + (map->includes_phdrs
+ ? (iehdr->e_phnum
+ * iehdr->e_phentsize)
+ : 0))))
+ map->p_paddr = segment->p_vaddr;
+
+ /* Match up the physical address of the segment with the
+ LMA address of the output section. */
+ if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
+ || IS_COREFILE_NOTE (segment, section) + || (bed->want_p_paddr_set_to_zero &&
+ IS_CONTAINED_BY_VMA (output_section, segment))
+ )
+ {
+ if (matching_lma == 0)
+ matching_lma = output_section->lma;
+
+ /* We assume that if the section fits within the segment
+ then it does not overlap any other section within that
+ segment. */
+ map->sections[isec ++] = output_section;
+ }
+ else if (suggested_lma == 0)
+ suggested_lma = output_section->lma;
+ }
+ }
+
+ BFD_ASSERT (j == section_count);
+
+ /* Step Two: Adjust the physical address of the current segment,
+ if necessary. */
+ if (isec == section_count)
+ {
+ /* All of the sections fitted within the segment as currently
+ specified. This is the default case. Add the segment to + the list of built segments and carry on to process the next + program header in the input BFD. */ + map->count = section_count; + *pointer_to_map = map; + pointer_to_map = &map->next;
+
+ free (sections);
+ continue;
+ }
+ else
+ {
+ if (matching_lma != 0)
+ {
+ /* At least one section fits inside the current segment.
+ Keep it, but modify its physical address to match the
+ LMA of the first section that fitted. */
+ map->p_paddr = matching_lma;
+ }
+ else
+ {
+ /* None of the sections fitted inside the current segment.
+ Change the current segment's physical address to match
+ the LMA of the first section. */
+ map->p_paddr = suggested_lma;
+ }
+
+ /* Offset the segment physical address from the lma
+ to allow for space taken up by elf headers. */
+ if (map->includes_filehdr)
+ map->p_paddr -= iehdr->e_ehsize;
+
+ if (map->includes_phdrs)
+ {
+ map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize;
+
+ /* iehdr->e_phnum is just an estimate of the number
+ of program headers that we will need. Make a note
+ here of the number we used and the segment we chose
+ to hold these headers, so that we can adjust the
+ offset when we know the correct value. */
+ phdr_adjust_num = iehdr->e_phnum;
+ phdr_adjust_seg = map;
+ }
+ }
+
+ /* Step Three: Loop over the sections again, this time assigning
+ those that fit to the current segment and removing them from the
+ sections array; but making sure not to leave large gaps. Once all
+ possible sections have been assigned to the current segment it is
+ added to the list of built segments and if sections still remain
+ to be assigned, a new segment is constructed before repeating
+ the loop. */
+ isec = 0;
+ do
+ {
+ map->count = 0;
+ suggested_lma = 0;
+
+ /* Fill the current segment with sections that fit. */
+ for (j = 0; j < section_count; j++)
+ {
+ section = sections[j];
+
+ if (section == NULL)
+ continue;
+
+ output_section = section->output_section;
+
+ BFD_ASSERT (output_section != NULL);
+
+ if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
+ || IS_COREFILE_NOTE (segment, section))
+ {
+ if (map->count == 0)
+ {
+ /* If the first section in a segment does not start at
+ the beginning of the segment, then something is
+ wrong. */
+ if (output_section->lma !=
+ (map->p_paddr
+ + (map->includes_filehdr ? iehdr->e_ehsize : 0)
+ + (map->includes_phdrs
+ ? iehdr->e_phnum * iehdr->e_phentsize
+ : 0)))
+ abort ();
+ }
+ else
+ {
+ asection * prev_sec;
+
+ prev_sec = map->sections[map->count - 1];
+
+ /* If the gap between the end of the previous section
+ and the start of this section is more than
+ maxpagesize then we need to start a new segment. */
+ if ((BFD_ALIGN (prev_sec->lma + prev_sec->size,
+ maxpagesize)
+ < BFD_ALIGN (output_section->lma, maxpagesize))
+ || ((prev_sec->lma + prev_sec->size)
+ > output_section->lma))
+ {
+ if (suggested_lma == 0)
+ suggested_lma = output_section->lma;
+
+ continue;
+ }
+ }
+
+ map->sections[map->count++] = output_section; + ++isec; + sections[j] = NULL; + section->segment_mark = TRUE;
+ }
+ else if (suggested_lma == 0)
+ suggested_lma = output_section->lma;
+ }
+
+ BFD_ASSERT (map->count > 0);
+
+ /* Add the current segment to the list of built segments. */ + *pointer_to_map = map; + pointer_to_map = &map->next;
+
+ if (isec < section_count)
+ {
+ /* We still have not allocated all of the sections to
+ segments. Create a new segment here, initialise it
+ and carry on looping. */
+ amt = sizeof (struct elf_segment_map); + amt += ((bfd_size_type) section_count - 1) * sizeof (asection *); + map = bfd_alloc (obfd, amt); + if (map == NULL)
+ {
+ free (sections);
+ return FALSE;
+ }
+
+ /* Initialise the fields of the segment map. Set the physical
+ physical address to the LMA of the first section that has
+ not yet been assigned. */
+ map->next = NULL; + map->p_type = segment->p_type; + map->p_flags = segment->p_flags; + map->p_flags_valid = 1; + map->p_paddr = suggested_lma; + map->p_paddr_valid = 1; + map->includes_filehdr = 0; + map->includes_phdrs = 0;
+ }
+ }
+ while (isec < section_count);
+
+ free (sections);
+ }
+
+ /* The Solaris linker creates program headers in which all the
+ p_paddr fields are zero. When we try to objcopy or strip such a + file, we get confused. Check for this case, and if we find it + reset the p_paddr_valid fields. */
+ for (map = map_first; map != NULL; map = map->next)
+ if (map->p_paddr != 0)
+ break;
+ if (map == NULL)
+ for (map = map_first; map != NULL; map = map->next)
+ map->p_paddr_valid = 0;
+
+ elf_tdata (obfd)->segment_map = map_first;
+
+ /* If we had to estimate the number of program headers that were
+ going to be needed, then check our estimate now and adjust
+ the offset if necessary. */
+ if (phdr_adjust_seg != NULL)
+ {
+ unsigned int count;
+
+ for (count = 0, map = map_first; map != NULL; map = map->next)
+ count++;
+
+ if (count > phdr_adjust_num)
+ phdr_adjust_seg->p_paddr
+ -= (count - phdr_adjust_num) * iehdr->e_phentsize;
+ }
+
+#if 0
+ /* Final Step: Sort the segments into ascending order of physical
+ address. */
+ if (map_first != NULL)
+ {
+ struct elf_segment_map *prev;
+
+ prev = map_first;
+ for (map = map_first->next; map != NULL; prev = map, map = map->next)
+ {
+ /* Yes I know - its a bubble sort.... */
+ if (map->next != NULL && (map->next->p_paddr < map->p_paddr))
+ {
+ /* Swap map and map->next. */ + prev->next = map->next; + map->next = map->next->next; + prev->next->next = map;
+
+ /* Restart loop. */
+ map = map_first;
+ }
+ }
+ }
+#endif
+
+#undef SEGMENT_END
+#undef SECTION_SIZE
+#undef IS_CONTAINED_BY_VMA
+#undef IS_CONTAINED_BY_LMA
+#undef IS_COREFILE_NOTE
+#undef IS_SOLARIS_PT_INTERP
+#undef INCLUDE_SECTION_IN_SEGMENT
+#undef SEGMENT_AFTER_SEGMENT
+#undef SEGMENT_OVERLAPS
+ return TRUE;
+}
+
+/* Copy private section information. This copies over the entsize
+ field, and sometimes the info field. */
+
+bfd_boolean
+_bfd_elf_copy_private_section_data (bfd *ibfd,
+ asection *isec, + bfd *obfd, + asection *osec)
+{
+ Elf_Internal_Shdr *ihdr, *ohdr;
+
+ if (ibfd->xvec->flavour != bfd_target_elf_flavour
+ || obfd->xvec->flavour != bfd_target_elf_flavour)
+ return TRUE;
+
+ ihdr = &elf_section_data (isec)->this_hdr;
+ ohdr = &elf_section_data (osec)->this_hdr; +
+ ohdr->sh_entsize = ihdr->sh_entsize;
+
+ if (ihdr->sh_type == SHT_SYMTAB
+ || ihdr->sh_type == SHT_DYNSYM + || ihdr->sh_type == SHT_GNU_verneed + || ihdr->sh_type == SHT_GNU_verdef)
+ ohdr->sh_info = ihdr->sh_info;
+
+ /* Set things up for objcopy. The output SHT_GROUP section will
+ have its elf_next_in_group pointing back to the input group
+ members. */
+ elf_next_in_group (osec) = elf_next_in_group (isec);
+ elf_group_name (osec) = elf_group_name (isec);
+
+ osec->use_rela_p = isec->use_rela_p;
+
+ return TRUE;
+}
+
+/* Copy private header information. */
+
+bfd_boolean
+_bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd) +{
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ /* Copy over private BFD data if it has not already been copied.
+ This must be done here, rather than in the copy_private_bfd_data + entry point, because the latter is called after the section + contents have been set, which means that the program headers have + already been worked out. */
+ if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL)
+ {
+ if (! copy_private_bfd_data (ibfd, obfd))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/* Copy private symbol information. If this symbol is in a section
+ which we did not map into a BFD section, try to map the section + index correctly. We use special macro definitions for the mapped + section indices; these definitions are interpreted by the + swap_out_syms function. */
+
+#define MAP_ONESYMTAB (SHN_HIOS + 1)
+#define MAP_DYNSYMTAB (SHN_HIOS + 2)
+#define MAP_STRTAB (SHN_HIOS + 3)
+#define MAP_SHSTRTAB (SHN_HIOS + 4)
+#define MAP_SYM_SHNDX (SHN_HIOS + 5)
+
+bfd_boolean
+_bfd_elf_copy_private_symbol_data (bfd *ibfd,
+ asymbol *isymarg, + bfd *obfd, + asymbol *osymarg)
+{
+ elf_symbol_type *isym, *osym;
+
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ isym = elf_symbol_from (ibfd, isymarg);
+ osym = elf_symbol_from (obfd, osymarg);
+
+ if (isym != NULL
+ && osym != NULL
+ && bfd_is_abs_section (isym->symbol.section))
+ {
+ unsigned int shndx;
+
+ shndx = isym->internal_elf_sym.st_shndx;
+ if (shndx == elf_onesymtab (ibfd))
+ shndx = MAP_ONESYMTAB;
+ else if (shndx == elf_dynsymtab (ibfd))
+ shndx = MAP_DYNSYMTAB;
+ else if (shndx == elf_tdata (ibfd)->strtab_section)
+ shndx = MAP_STRTAB;
+ else if (shndx == elf_tdata (ibfd)->shstrtab_section)
+ shndx = MAP_SHSTRTAB;
+ else if (shndx == elf_tdata (ibfd)->symtab_shndx_section)
+ shndx = MAP_SYM_SHNDX;
+ osym->internal_elf_sym.st_shndx = shndx;
+ }
+
+ return TRUE;
+}
+
+/* Swap out the symbols. */
+
+static bfd_boolean
+swap_out_syms (bfd *abfd,
+ struct bfd_strtab_hash **sttp,
+ int relocatable_p)
+{
+ const struct elf_backend_data *bed; + int symcount; + asymbol **syms; + struct bfd_strtab_hash *stt; + Elf_Internal_Shdr *symtab_hdr; + Elf_Internal_Shdr *symtab_shndx_hdr; + Elf_Internal_Shdr *symstrtab_hdr; + char *outbound_syms; + char *outbound_shndx; + int idx; + bfd_size_type amt; + bfd_boolean name_local_sections;
+
+ if (!elf_map_symbols (abfd))
+ return FALSE;
+
+ /* Dump out the symtabs. */ + stt = _bfd_elf_stringtab_init (); + if (stt == NULL) + return FALSE; + + bed = get_elf_backend_data (abfd); + symcount = bfd_get_symcount (abfd); + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + symtab_hdr->sh_type = SHT_SYMTAB; + symtab_hdr->sh_entsize = bed->s->sizeof_sym; + symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1); + symtab_hdr->sh_info = elf_num_locals (abfd) + 1; + symtab_hdr->sh_addralign = 1 << bed->s->log_file_align;
+
+ symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
+ symstrtab_hdr->sh_type = SHT_STRTAB;
+
+ amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym; + outbound_syms = bfd_alloc (abfd, amt); + if (outbound_syms == NULL)
+ {
+ _bfd_stringtab_free (stt);
+ return FALSE;
+ }
+ symtab_hdr->contents = outbound_syms;
+
+ outbound_shndx = NULL;
+ symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
+ if (symtab_shndx_hdr->sh_name != 0)
+ {
+ amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
+ outbound_shndx = bfd_zalloc (abfd, amt);
+ if (outbound_shndx == NULL)+ {
+ _bfd_stringtab_free (stt);
+ return FALSE;
+ }
+
+ symtab_shndx_hdr->contents = outbound_shndx; + symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX; + symtab_shndx_hdr->sh_size = amt; + symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx); + symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
+ }
+
+ /* Now generate the data (for "contents"). */
+ {
+ /* Fill in zeroth symbol and swap it out. */ + Elf_Internal_Sym sym; + sym.st_name = 0; + sym.st_value = 0; + sym.st_size = 0; + sym.st_info = 0; + sym.st_other = 0; + sym.st_shndx = SHN_UNDEF; + bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); + outbound_syms += bed->s->sizeof_sym; + if (outbound_shndx != NULL)
+ outbound_shndx += sizeof (Elf_External_Sym_Shndx);
+ }
+
+ name_local_sections
+ = (bed->elf_backend_name_local_section_symbols
+ && bed->elf_backend_name_local_section_symbols (abfd));
+
+ syms = bfd_get_outsymbols (abfd);
+ for (idx = 0; idx < symcount; idx++)
+ {
+ Elf_Internal_Sym sym; + bfd_vma value = syms[idx]->value; + elf_symbol_type *type_ptr; + flagword flags = syms[idx]->flags; + int type;
+
+ if (!name_local_sections
+ && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
+ {
+ /* Local section symbols have no name. */
+ sym.st_name = 0;
+ }
+ else
+ {
+ sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
+ syms[idx]->name,
+ TRUE, FALSE);
+ if (sym.st_name == (unsigned long) -1)
+ {
+ _bfd_stringtab_free (stt);
+ return FALSE;
+ }
+ }
+
+ type_ptr = elf_symbol_from (abfd, syms[idx]);
+
+ if ((flags & BSF_SECTION_SYM) == 0
+ && bfd_is_com_section (syms[idx]->section))
+ {
+ /* ELF common symbols put the alignment into the `value' field,
+ and the size into the `size' field. This is backwards from
+ how BFD handles it, so reverse it here. */
+ sym.st_size = value;
+ if (type_ptr == NULL
+ || type_ptr->internal_elf_sym.st_value == 0)
+ sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
+ else
+ sym.st_value = type_ptr->internal_elf_sym.st_value;
+ sym.st_shndx = _bfd_elf_section_from_bfd_section
+ (abfd, syms[idx]->section);
+ }
+ else
+ {
+ asection *sec = syms[idx]->section;
+ int shndx;
+
+ if (sec->output_section)
+ {
+ value += sec->output_offset;
+ sec = sec->output_section;
+ }
+
+ /* Don't add in the section vma for relocatable output. */
+ if (! relocatable_p)
+ value += sec->vma;
+ sym.st_value = value;
+ sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
+
+ if (bfd_is_abs_section (sec)
+ && type_ptr != NULL
+ && type_ptr->internal_elf_sym.st_shndx != 0)
+ {
+ /* This symbol is in a real ELF section which we did
+ not create as a BFD section. Undo the mapping done
+ by copy_private_symbol_data. */
+ shndx = type_ptr->internal_elf_sym.st_shndx;
+ switch (shndx)
+ {
+ case MAP_ONESYMTAB:
+ shndx = elf_onesymtab (abfd);
+ break;
+ case MAP_DYNSYMTAB:
+ shndx = elf_dynsymtab (abfd);
+ break;
+ case MAP_STRTAB:
+ shndx = elf_tdata (abfd)->strtab_section;
+ break;
+ case MAP_SHSTRTAB:
+ shndx = elf_tdata (abfd)->shstrtab_section;
+ break;
+ case MAP_SYM_SHNDX:
+ shndx = elf_tdata (abfd)->symtab_shndx_section;
+ break;
+ default:
+ break;
+ }
+ }
+ else
+ {
+ shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+
+ if (shndx == -1)
+ {
+ asection *sec2;
+
+ /* Writing this would be a hell of a lot easier if
+ we had some decent documentation on bfd, and + knew what to expect of the library, and what to + demand of applications. For example, it + appears that `objcopy' might not set the + section of a symbol to be a section that is + actually in the output file. */
+ sec2 = bfd_get_section_by_name (abfd, sec->name);
+ if (sec2 == NULL)
+ {
+ _bfd_error_handler (_("\
+Unable to find equivalent output section for symbol '%s' from section '%s'"),
+ syms[idx]->name ? syms[idx]->name : "<Local sym>",
+ sec->name);
+ bfd_set_error (bfd_error_invalid_operation); + _bfd_stringtab_free (stt); + return FALSE;
+ }
+
+ shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
+ BFD_ASSERT (shndx != -1);
+ }
+ }
+
+ sym.st_shndx = shndx;
+ }
+
+ if ((flags & BSF_THREAD_LOCAL) != 0)
+ type = STT_TLS;
+ else if ((flags & BSF_FUNCTION) != 0)
+ type = STT_FUNC;
+ else if ((flags & BSF_OBJECT) != 0)
+ type = STT_OBJECT;
+ else
+ type = STT_NOTYPE;
+
+ if (syms[idx]->section->flags & SEC_THREAD_LOCAL)
+ type = STT_TLS;
+
+ /* Processor-specific types. */
+ if (type_ptr != NULL
+ && bed->elf_backend_get_symbol_type)
+ type = ((*bed->elf_backend_get_symbol_type)
+ (&type_ptr->internal_elf_sym, type));
+
+ if (flags & BSF_SECTION_SYM)
+ {
+ if (flags & BSF_GLOBAL)
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
+ else
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+ }
+ else if (bfd_is_com_section (syms[idx]->section))
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
+ else if (bfd_is_und_section (syms[idx]->section))
+ sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
+ ? STB_WEAK
+ : STB_GLOBAL),
+ type);
+ else if (flags & BSF_FILE)
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
+ else
+ {
+ int bind = STB_LOCAL;
+
+ if (flags & BSF_LOCAL)
+ bind = STB_LOCAL;
+ else if (flags & BSF_WEAK)
+ bind = STB_WEAK;
+ else if (flags & BSF_GLOBAL)
+ bind = STB_GLOBAL;
+
+ sym.st_info = ELF_ST_INFO (bind, type);
+ }
+
+ if (type_ptr != NULL)
+ sym.st_other = type_ptr->internal_elf_sym.st_other;
+ else
+ sym.st_other = 0;
+
+ bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx); + outbound_syms += bed->s->sizeof_sym; + if (outbound_shndx != NULL) + outbound_shndx += sizeof (Elf_External_Sym_Shndx); + } + + *sttp = stt; + symstrtab_hdr->sh_size = _bfd_stringtab_size (stt); + symstrtab_hdr->sh_type = SHT_STRTAB; + + symstrtab_hdr->sh_flags = 0; + symstrtab_hdr->sh_addr = 0; + symstrtab_hdr->sh_entsize = 0; + symstrtab_hdr->sh_link = 0; + symstrtab_hdr->sh_info = 0; + symstrtab_hdr->sh_addralign = 1;
+
+ return TRUE;
+}
+
+/* Return the number of bytes required to hold the symtab vector. +
+ Note that we base it on the count plus 1, since we will null terminate + the vector allocated based on this size. However, the ELF symbol table + always has a dummy entry as symbol #0, so it ends up even. */
+
+long
+_bfd_elf_get_symtab_upper_bound (bfd *abfd)
+{
+ long symcount; + long symtab_size; + Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr; + + symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; + symtab_size = (symcount + 1) * (sizeof (asymbol *)); + if (symcount > 0)
+ symtab_size -= sizeof (asymbol *);
+
+ return symtab_size;
+}
+
+long +_bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd) +{
+ long symcount; + long symtab_size; + Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
+
+ if (elf_dynsymtab (abfd) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; + symtab_size = (symcount + 1) * (sizeof (asymbol *)); + if (symcount > 0)
+ symtab_size -= sizeof (asymbol *);
+
+ return symtab_size;
+}
+
+long
+_bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
+ sec_ptr asect)
+{
+ return (asect->reloc_count + 1) * sizeof (arelent *); +}
+
+/* Canonicalize the relocs. */
+
+long
+_bfd_elf_canonicalize_reloc (bfd *abfd,
+ sec_ptr section,
+ arelent **relptr,
+ asymbol **symbols)
+{
+ arelent *tblptr;
+ unsigned int i;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);+
+ if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
+ return -1;
+
+ tblptr = section->relocation;
+ for (i = 0; i < section->reloc_count; i++)
+ *relptr++ = tblptr++;
+
+ *relptr = NULL;
+
+ return section->reloc_count;
+}
+
+long
+_bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation) +{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE); +
+ if (symcount >= 0)
+ bfd_get_symcount (abfd) = symcount;
+ return symcount;
+}
+
+long
+_bfd_elf_canonicalize_dynamic_symtab (bfd *abfd,
+ asymbol **allocation)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE); +
+ if (symcount >= 0)
+ bfd_get_dynamic_symcount (abfd) = symcount;
+ return symcount;
+}
+
+/* Return the size required for the dynamic reloc entries. Any
+ section that was actually installed in the BFD, and has type + SHT_REL or SHT_RELA, and uses the dynamic symbol table, is + considered to be a dynamic reloc section. */
+
+long
+_bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd)
+{
+ long ret;
+ asection *s;
+
+ if (elf_dynsymtab (abfd) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ ret = sizeof (arelent *);
+ for (s = abfd->sections; s != NULL; s = s->next)
+ if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
+ && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
+ || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
+ ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize)
+ * sizeof (arelent *));
+
+ return ret;
+}
+
+/* Canonicalize the dynamic relocation entries. Note that we return
+ the dynamic relocations as a single block, although they are + actually associated with particular sections; the interface, which + was designed for SunOS style shared libraries, expects that there + is only one set of dynamic relocs. Any section that was actually + installed in the BFD, and has type SHT_REL or SHT_RELA, and uses + the dynamic symbol table, is considered to be a dynamic reloc + section. */
+
+long
+_bfd_elf_canonicalize_dynamic_reloc (bfd *abfd,
+ arelent **storage,
+ asymbol **syms)
+{
+ bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); + asection *s; + long ret;
+
+ if (elf_dynsymtab (abfd) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; + ret = 0; + for (s = abfd->sections; s != NULL; s = s->next)
+ {
+ if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
+ && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
+ || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
+ {
+ arelent *p;
+ long count, i;
+
+ if (! (*slurp_relocs) (abfd, s, syms, TRUE))
+ return -1;
+ count = s->size / elf_section_data (s)->this_hdr.sh_entsize; + p = s->relocation; + for (i = 0; i < count; i++)
+ *storage++ = p++;
+ ret += count;
+ }
+ }
+
+ *storage = NULL;
+
+ return ret;
+}
+
+/* Read in the version information. */
+
+bfd_boolean
+_bfd_elf_slurp_version_tables (bfd *abfd)
+{
+ bfd_byte *contents = NULL;
+ bfd_size_type amt;
+
+ if (elf_dynverdef (abfd) != 0)
+ {
+ Elf_Internal_Shdr *hdr; + Elf_External_Verdef *everdef; + Elf_Internal_Verdef *iverdef; + Elf_Internal_Verdef *iverdefarr; + Elf_Internal_Verdef iverdefmem; + unsigned int i; + unsigned int maxidx;
+
+ hdr = &elf_tdata (abfd)->dynverdef_hdr;
+
+ contents = bfd_malloc (hdr->sh_size);
+ if (contents == NULL)
+ goto error_return;
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
+ || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
+ goto error_return;
+
+ /* We know the number of entries in the section but not the maximum
+ index. Therefore we have to run through all entries and find
+ the maximum. */
+ everdef = (Elf_External_Verdef *) contents; + maxidx = 0; + for (i = 0; i < hdr->sh_info; ++i)
+ {
+ _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
+
+ if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
+ maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);
+
+ everdef = ((Elf_External_Verdef *)
+ ((bfd_byte *) everdef + iverdefmem.vd_next));
+ }
+
+ amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef); + elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt); + if (elf_tdata (abfd)->verdef == NULL)
+ goto error_return;
+
+ elf_tdata (abfd)->cverdefs = maxidx;
+
+ everdef = (Elf_External_Verdef *) contents;
+ iverdefarr = elf_tdata (abfd)->verdef;
+ for (i = 0; i < hdr->sh_info; i++)
+ {
+ Elf_External_Verdaux *everdaux;
+ Elf_Internal_Verdaux *iverdaux;
+ unsigned int j;+
+ _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
+
+ iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
+ memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef));
+
+ iverdef->vd_bfd = abfd;
+
+ amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux); + iverdef->vd_auxptr = bfd_alloc (abfd, amt); + if (iverdef->vd_auxptr == NULL)
+ goto error_return;
+
+ everdaux = ((Elf_External_Verdaux *)
+ ((bfd_byte *) everdef + iverdef->vd_aux));
+ iverdaux = iverdef->vd_auxptr;
+ for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++)
+ {
+ _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux);
+
+ iverdaux->vda_nodename =
+ bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
+ iverdaux->vda_name);
+ if (iverdaux->vda_nodename == NULL)
+ goto error_return;
+
+ if (j + 1 < iverdef->vd_cnt)
+ iverdaux->vda_nextptr = iverdaux + 1;
+ else
+ iverdaux->vda_nextptr = NULL;
+
+ everdaux = ((Elf_External_Verdaux *)
+ ((bfd_byte *) everdaux + iverdaux->vda_next));
+ }
+
+ iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
+
+ if (i + 1 < hdr->sh_info)
+ iverdef->vd_nextdef = iverdef + 1;
+ else
+ iverdef->vd_nextdef = NULL;
+
+ everdef = ((Elf_External_Verdef *)
+ ((bfd_byte *) everdef + iverdef->vd_next));
+ }
+
+ free (contents);
+ contents = NULL;
+ }
+
+ if (elf_dynverref (abfd) != 0)
+ {
+ Elf_Internal_Shdr *hdr; + Elf_External_Verneed *everneed; + Elf_Internal_Verneed *iverneed; + unsigned int i; + + hdr = &elf_tdata (abfd)->dynverref_hdr; + + amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed); + elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt); + if (elf_tdata (abfd)->verref == NULL)
+ goto error_return;
+
+ elf_tdata (abfd)->cverrefs = hdr->sh_info;
+
+ contents = bfd_malloc (hdr->sh_size);
+ if (contents == NULL)
+ goto error_return;
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
+ || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
+ goto error_return;
+
+ everneed = (Elf_External_Verneed *) contents;
+ iverneed = elf_tdata (abfd)->verref;
+ for (i = 0; i < hdr->sh_info; i++, iverneed++)
+ {
+ Elf_External_Vernaux *evernaux;
+ Elf_Internal_Vernaux *ivernaux;
+ unsigned int j;+
+ _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
+
+ iverneed->vn_bfd = abfd;
+
+ iverneed->vn_filename =
+ bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
+ iverneed->vn_file);
+ if (iverneed->vn_filename == NULL)
+ goto error_return;
+
+ amt = iverneed->vn_cnt; + amt *= sizeof (Elf_Internal_Vernaux); + iverneed->vn_auxptr = bfd_alloc (abfd, amt);
+
+ evernaux = ((Elf_External_Vernaux *)
+ ((bfd_byte *) everneed + iverneed->vn_aux));
+ ivernaux = iverneed->vn_auxptr;
+ for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
+ {
+ _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
+
+ ivernaux->vna_nodename =
+ bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
+ ivernaux->vna_name);
+ if (ivernaux->vna_nodename == NULL)
+ goto error_return;
+
+ if (j + 1 < iverneed->vn_cnt)
+ ivernaux->vna_nextptr = ivernaux + 1;
+ else
+ ivernaux->vna_nextptr = NULL;
+
+ evernaux = ((Elf_External_Vernaux *)
+ ((bfd_byte *) evernaux + ivernaux->vna_next));
+ }
+
+ if (i + 1 < hdr->sh_info)
+ iverneed->vn_nextref = iverneed + 1;
+ else
+ iverneed->vn_nextref = NULL;
+
+ everneed = ((Elf_External_Verneed *)
+ ((bfd_byte *) everneed + iverneed->vn_next));
+ }
+
+ free (contents);
+ contents = NULL;
+ }
+
+ return TRUE;
+
+ error_return:
+ if (contents != NULL)
+ free (contents);
+ return FALSE;
+}
+
+asymbol *
+_bfd_elf_make_empty_symbol (bfd *abfd)
+{
+ elf_symbol_type *newsym;
+ bfd_size_type amt = sizeof (elf_symbol_type);
+
+ newsym = bfd_zalloc (abfd, amt);
+ if (!newsym)
+ return NULL;
+ else
+ {
+ newsym->symbol.the_bfd = abfd;
+ return &newsym->symbol;
+ }
+}
+
+void
+_bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol *symbol,
+ symbol_info *ret)
+{
+ bfd_symbol_info (symbol, ret);
+}
+
+/* Return whether a symbol name implies a local symbol. Most targets
+ use this function for the is_local_label_name entry point, but some
+ override it. */
+
+bfd_boolean
+_bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *name)
+{
+ /* Normal local symbols start with ``.L''. */
+ if (name[0] == '.' && name[1] == 'L')
+ return TRUE;
+
+ /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
+ DWARF debugging symbols starting with ``..''. */
+ if (name[0] == '.' && name[1] == '.')
+ return TRUE;
+
+ /* gcc will sometimes generate symbols beginning with ``_.L_'' when
+ emitting DWARF debugging output. I suspect this is actually a + small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call + ASM_GENERATE_INTERNAL_LABEL, and this causes the leading + underscore to be emitted on some ELF targets). For ease of use, + we treat such symbols as local. */
+ if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
+ return TRUE;
+
+ return FALSE;
+}
+
+alent *
+_bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol *symbol ATTRIBUTE_UNUSED)
+{
+ abort ();
+ return NULL;
+}
+
+bfd_boolean
+_bfd_elf_set_arch_mach (bfd *abfd,
+ enum bfd_architecture arch,
+ unsigned long machine)
+{
+ /* If this isn't the right architecture for this backend, and this
+ isn't the generic backend, fail. */
+ if (arch != get_elf_backend_data (abfd)->arch
+ && arch != bfd_arch_unknown
+ && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
+ return FALSE;
+
+ return bfd_default_set_arch_mach (abfd, arch, machine);
+}
+
+/* Find the function to a particular section and offset,
+ for error reporting. */
+
+static bfd_boolean
+elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *section,
+ asymbol **symbols,
+ bfd_vma offset,
+ const char **filename_ptr,
+ const char **functionname_ptr)
+{
+ const char *filename;
+ asymbol *func;
+ bfd_vma low_func;
+ asymbol **p;
+
+ filename = NULL;
+ func = NULL;
+ low_func = 0;+
+ for (p = symbols; *p != NULL; p++)
+ {
+ elf_symbol_type *q;
+
+ q = (elf_symbol_type *) *p;
+
+ if (bfd_get_section (&q->symbol) != section)
+ continue;
+
+ switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
+ {
+ default:
+ break;
+ case STT_FILE:
+ filename = bfd_asymbol_name (&q->symbol);
+ break;
+ case STT_NOTYPE:
+ case STT_FUNC:
+ if (q->symbol.section == section
+ && q->symbol.value >= low_func
+ && q->symbol.value <= offset)
+ {
+ func = (asymbol *) q;
+ low_func = q->symbol.value;
+ }
+ break;
+ }
+ }
+
+ if (func == NULL)
+ return FALSE;
+
+ if (filename_ptr)
+ *filename_ptr = filename;
+ if (functionname_ptr)
+ *functionname_ptr = bfd_asymbol_name (func);
+
+ return TRUE;
+}
+
+/* Find the nearest line to a particular section and offset,
+ for error reporting. */
+
+bfd_boolean
+_bfd_elf_find_nearest_line (bfd *abfd,
+ asection *section, + asymbol **symbols, + bfd_vma offset, + const char **filename_ptr, + const char **functionname_ptr, + unsigned int *line_ptr)
+{
+ bfd_boolean found;
+
+ if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr,
+ line_ptr))
+ {
+ if (!*functionname_ptr)
+ elf_find_function (abfd, section, symbols, offset,
+ *filename_ptr ? NULL : filename_ptr,
+ functionname_ptr);
+
+ return TRUE;
+ }
+
+ if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr, + line_ptr, 0, + &elf_tdata (abfd)->dwarf2_find_line_info))
+ {
+ if (!*functionname_ptr)
+ elf_find_function (abfd, section, symbols, offset,
+ *filename_ptr ? NULL : filename_ptr,
+ functionname_ptr);
+
+ return TRUE;
+ }
+
+ if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
+ &found, filename_ptr, + functionname_ptr, line_ptr, + &elf_tdata (abfd)->line_info))
+ return FALSE;
+ if (found && (*functionname_ptr || *line_ptr))
+ return TRUE;
+
+ if (symbols == NULL)
+ return FALSE;
+
+ if (! elf_find_function (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr))
+ return FALSE;
+
+ *line_ptr = 0;
+ return TRUE;
+}
+
+int
+_bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc) +{
+ int ret;
+
+ ret = get_elf_backend_data (abfd)->s->sizeof_ehdr;
+ if (! reloc)
+ ret += get_program_header_size (abfd);
+ return ret;
+}
+
+bfd_boolean
+_bfd_elf_set_section_contents (bfd *abfd,
+ sec_ptr section, + const void *location, + file_ptr offset, + bfd_size_type count)
+{
+ Elf_Internal_Shdr *hdr;
+ bfd_signed_vma pos;
+
+ if (! abfd->output_has_begun
+ && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
+ return FALSE;
+
+ hdr = &elf_section_data (section)->this_hdr; + pos = hdr->sh_offset + offset; + if (bfd_seek (abfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (location, count, abfd) != count)
+ return FALSE;
+
+ return TRUE;
+}
+
+void
+_bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *cache_ptr ATTRIBUTE_UNUSED,
+ Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
+{
+ abort ();
+}
+
+/* Try to convert a non-ELF reloc into an ELF one. */
+
+bfd_boolean
+_bfd_elf_validate_reloc (bfd *abfd, arelent *areloc)
+{
+ /* Check whether we really have an ELF howto. */
+
+ if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec)
+ {
+ bfd_reloc_code_real_type code;
+ reloc_howto_type *howto;
+
+ /* Alien reloc: Try to determine its type to replace it with an
+ equivalent ELF reloc. */
+
+ if (areloc->howto->pc_relative)
+ {
+ switch (areloc->howto->bitsize)
+ {
+ case 8:
+ code = BFD_RELOC_8_PCREL;
+ break;
+ case 12:
+ code = BFD_RELOC_12_PCREL;
+ break;
+ case 16:
+ code = BFD_RELOC_16_PCREL;
+ break;
+ case 24:
+ code = BFD_RELOC_24_PCREL;
+ break;
+ case 32:
+ code = BFD_RELOC_32_PCREL;
+ break;
+ case 64:
+ code = BFD_RELOC_64_PCREL;
+ break;
+ default:
+ goto fail;
+ }
+
+ howto = bfd_reloc_type_lookup (abfd, code);
+
+ if (areloc->howto->pcrel_offset != howto->pcrel_offset)
+ {
+ if (howto->pcrel_offset)
+ areloc->addend += areloc->address;
+ else
+ areloc->addend -= areloc->address; /* addend is unsigned!! */
+ }
+ }
+ else
+ {
+ switch (areloc->howto->bitsize)
+ {
+ case 8:
+ code = BFD_RELOC_8;
+ break;
+ case 14:
+ code = BFD_RELOC_14;
+ break;
+ case 16:
+ code = BFD_RELOC_16;
+ break;
+ case 26:
+ code = BFD_RELOC_26;
+ break;
+ case 32:
+ code = BFD_RELOC_32;
+ break;
+ case 64:
+ code = BFD_RELOC_64;
+ break;
+ default:
+ goto fail;
+ }
+
+ howto = bfd_reloc_type_lookup (abfd, code);
+ }
+
+ if (howto)
+ areloc->howto = howto;
+ else
+ goto fail;
+ }
+
+ return TRUE;
+
+ fail:
+ (*_bfd_error_handler)
+ (_("%s: unsupported relocation type %s"),
+ bfd_archive_filename (abfd), areloc->howto->name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+}
+
+bfd_boolean
+_bfd_elf_close_and_cleanup (bfd *abfd)
+{
+ if (bfd_get_format (abfd) == bfd_object)
+ {
+ if (elf_shstrtab (abfd) != NULL)
+ _bfd_elf_strtab_free (elf_shstrtab (abfd));
+ }
+
+ return _bfd_generic_close_and_cleanup (abfd);
+}
+
+/* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
+ in the relocation's offset. Thus we cannot allow any sort of sanity + range-checking to interfere. There is nothing else to do in processing + this reloc. */
+
+bfd_reloc_status_type +_bfd_elf_rel_vtable_reloc_fn
+ (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED,
+ struct bfd_symbol *symbol ATTRIBUTE_UNUSED, + void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED, + bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED)
+{
+ return bfd_reloc_ok;
+}
+
+/* Elf core file support. Much of this only works on native
+ toolchains, since we rely on knowing the + machine-dependent procfs structure in order to pick + out details about the corefile. */
+
+#ifdef HAVE_SYS_PROCFS_H
+# if defined(_GDB_CROSS_COMP)
+# include "user.h"
+# endif
+# include <sys/procfs.h>
+#endif
+
+/* FIXME: this is kinda wrong, but it's what gdb wants. */ +
+static int
+elfcore_make_pid (bfd *abfd)
+{
+ return ((elf_tdata (abfd)->core_lwpid << 16)
+ + (elf_tdata (abfd)->core_pid));
+}
+
+/* If there isn't a section called NAME, make one, using
+ data from SECT. Note, this function will generate a + reference to NAME, so you shouldn't deallocate or + overwrite it. */
+
+static bfd_boolean
+elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect) +{
+ asection *sect2;
+
+ if (bfd_get_section_by_name (abfd, name) != NULL)
+ return TRUE;
+
+ sect2 = bfd_make_section (abfd, name);
+ if (sect2 == NULL)
+ return FALSE;
+
+ sect2->size = sect->size; + sect2->filepos = sect->filepos; + sect2->flags = sect->flags; + sect2->alignment_power = sect->alignment_power; + return TRUE;
+}
+
+/* Create a pseudosection containing SIZE bytes at FILEPOS. This
+ actually creates up to two pseudosections:
+ - For the single-threaded case, a section named NAME, unless
+ such a section already exists.
+ - For the multi-threaded case, a section named "NAME/PID", where
+ PID is elfcore_make_pid (abfd).
+ Both pseudosections have identical contents. */
+bfd_boolean
+_bfd_elfcore_make_pseudosection (bfd *abfd,
+ char *name,
+ size_t size,
+ ufile_ptr filepos)
+{
+ char buf[100]; + char *threaded_name; + size_t len; + asection *sect; + + /* Build the section name. */ + + sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd)); + len = strlen (buf) + 1; + threaded_name = bfd_alloc (abfd, len); + if (threaded_name == NULL)
+ return FALSE;
+ memcpy (threaded_name, buf, len);
+
+ sect = bfd_make_section_anyway (abfd, threaded_name);
+ if (sect == NULL)
+ return FALSE;
+ sect->size = size; + sect->filepos = filepos; + sect->flags = SEC_HAS_CONTENTS; + sect->alignment_power = 2;
+
+ return elfcore_maybe_make_sect (abfd, name, sect); +}
+
+/* prstatus_t exists on:
+ solaris 2.5+ + linux 2.[01] + glibc + unixware 4.2
+*/
+
+#if defined (HAVE_PRSTATUS_T)
+
+static bfd_boolean
+elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) +{
+ size_t size;
+ int offset;
+
+ if (note->descsz == sizeof (prstatus_t))
+ {
+ prstatus_t prstat;
+
+ size = sizeof (prstat.pr_reg); + offset = offsetof (prstatus_t, pr_reg); + memcpy (&prstat, note->descdata, sizeof (prstat));
+
+ /* Do not overwrite the core signal if it
+ has already been set by another thread. */
+ if (elf_tdata (abfd)->core_signal == 0)
+ elf_tdata (abfd)->core_signal = prstat.pr_cursig;
+ elf_tdata (abfd)->core_pid = prstat.pr_pid;
+
+ /* pr_who exists on:
+ solaris 2.5+
+ unixware 4.2
+ pr_who doesn't exist on:
+ linux 2.[01]
+ */
+#if defined (HAVE_PRSTATUS_T_PR_WHO)
+ elf_tdata (abfd)->core_lwpid = prstat.pr_who;
+#endif
+ }
+#if defined (HAVE_PRSTATUS32_T)
+ else if (note->descsz == sizeof (prstatus32_t))
+ {
+ /* 64-bit host, 32-bit corefile */
+ prstatus32_t prstat;
+
+ size = sizeof (prstat.pr_reg); + offset = offsetof (prstatus32_t, pr_reg); + memcpy (&prstat, note->descdata, sizeof (prstat));
+
+ /* Do not overwrite the core signal if it
+ has already been set by another thread. */
+ if (elf_tdata (abfd)->core_signal == 0)
+ elf_tdata (abfd)->core_signal = prstat.pr_cursig;
+ elf_tdata (abfd)->core_pid = prstat.pr_pid;
+
+ /* pr_who exists on:
+ solaris 2.5+
+ unixware 4.2
+ pr_who doesn't exist on:
+ linux 2.[01]
+ */
+#if defined (HAVE_PRSTATUS32_T_PR_WHO)
+ elf_tdata (abfd)->core_lwpid = prstat.pr_who;
+#endif
+ }
+#endif /* HAVE_PRSTATUS32_T */
+ else
+ {
+ /* Fail - we don't know how to handle any other
+ note size (ie. data object type). */
+ return TRUE;
+ }
+
+ /* Make a ".reg/999" section and a ".reg" section. */
+ return _bfd_elfcore_make_pseudosection (abfd, ".reg",
+ size, note->descpos + offset);
+}
+#endif /* defined (HAVE_PRSTATUS_T) */
+
+/* Create a pseudosection containing the exact contents of NOTE. */ +static bfd_boolean
+elfcore_make_note_pseudosection (bfd *abfd,
+ char *name,
+ Elf_Internal_Note *note)
+{
+ return _bfd_elfcore_make_pseudosection (abfd, name,
+ note->descsz, note->descpos);
+}
+
+/* There isn't a consistent prfpregset_t across platforms,
+ but it doesn't matter, because we don't have to pick this
+ data structure apart. */
+
+static bfd_boolean
+elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note) +{
+ return elfcore_make_note_pseudosection (abfd, ".reg2", note); +}
+
+/* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
+ type of 5 (NT_PRXFPREG). Just include the whole note's contents
+ literally. */
+
+static bfd_boolean
+elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note) +{
+ return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note); +}
+
+#if defined (HAVE_PRPSINFO_T)
+typedef prpsinfo_t elfcore_psinfo_t;
+#if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
+typedef prpsinfo32_t elfcore_psinfo32_t;
+#endif
+#endif
+
+#if defined (HAVE_PSINFO_T)
+typedef psinfo_t elfcore_psinfo_t;
+#if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
+typedef psinfo32_t elfcore_psinfo32_t;
+#endif
+#endif
+
+/* return a malloc'ed copy of a string at START which is at
+ most MAX bytes long, possibly without a terminating '\0'.
+ the copy will always have a terminating '\0'. */
+
+char *
+_bfd_elfcore_strndup (bfd *abfd, char *start, size_t max) +{
+ char *dups; + char *end = memchr (start, '\0', max); + size_t len;
+
+ if (end == NULL)
+ len = max;
+ else
+ len = end - start;
+
+ dups = bfd_alloc (abfd, len + 1);
+ if (dups == NULL)
+ return NULL;
+
+ memcpy (dups, start, len);
+ dups[len] = '\0';
+
+ return dups;
+}
+
+#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) +static bfd_boolean
+elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) +{
+ if (note->descsz == sizeof (elfcore_psinfo_t))
+ {
+ elfcore_psinfo_t psinfo;
+
+ memcpy (&psinfo, note->descdata, sizeof (psinfo));
+
+ elf_tdata (abfd)->core_program
+ = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
+ sizeof (psinfo.pr_fname));
+
+ elf_tdata (abfd)->core_command
+ = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
+ sizeof (psinfo.pr_psargs));
+ }
+#if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
+ else if (note->descsz == sizeof (elfcore_psinfo32_t))
+ {
+ /* 64-bit host, 32-bit corefile */
+ elfcore_psinfo32_t psinfo;
+
+ memcpy (&psinfo, note->descdata, sizeof (psinfo));
+
+ elf_tdata (abfd)->core_program
+ = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
+ sizeof (psinfo.pr_fname));
+
+ elf_tdata (abfd)->core_command
+ = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
+ sizeof (psinfo.pr_psargs));
+ }
+#endif
+
+ else
+ {
+ /* Fail - we don't know how to handle any other
+ note size (ie. data object type). */
+ return TRUE;
+ }
+
+ /* Note that for some reason, a spurious space is tacked
+ onto the end of the args in some (at least one anyway)
+ implementations, so strip it off if it exists. */
+
+ {
+ char *command = elf_tdata (abfd)->core_command;
+ int n = strlen (command);
+
+ if (0 < n && command[n - 1] == ' ')
+ command[n - 1] = '\0';
+ }
+
+ return TRUE;
+}
+#endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */ +
+#if defined (HAVE_PSTATUS_T)
+static bfd_boolean
+elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note) +{
+ if (note->descsz == sizeof (pstatus_t)
+#if defined (HAVE_PXSTATUS_T)
+ || note->descsz == sizeof (pxstatus_t)
+#endif
+ )
+ {
+ pstatus_t pstat;
+
+ memcpy (&pstat, note->descdata, sizeof (pstat));
+
+ elf_tdata (abfd)->core_pid = pstat.pr_pid;
+ }
+#if defined (HAVE_PSTATUS32_T)
+ else if (note->descsz == sizeof (pstatus32_t))
+ {
+ /* 64-bit host, 32-bit corefile */
+ pstatus32_t pstat;
+
+ memcpy (&pstat, note->descdata, sizeof (pstat));
+
+ elf_tdata (abfd)->core_pid = pstat.pr_pid;
+ }
+#endif
+ /* Could grab some more details from the "representative"
+ lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
+ NT_LWPSTATUS note, presumably. */
+
+ return TRUE;
+}
+#endif /* defined (HAVE_PSTATUS_T) */
+
+#if defined (HAVE_LWPSTATUS_T)
+static bfd_boolean
+elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note) +{
+ lwpstatus_t lwpstat; + char buf[100]; + char *name; + size_t len; + asection *sect;
+
+ if (note->descsz != sizeof (lwpstat)
+#if defined (HAVE_LWPXSTATUS_T)
+ && note->descsz != sizeof (lwpxstatus_t)
+#endif
+ )
+ return TRUE;
+
+ memcpy (&lwpstat, note->descdata, sizeof (lwpstat)); +
+ elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid;
+ elf_tdata (abfd)->core_signal = lwpstat.pr_cursig; +
+ /* Make a ".reg/999" section. */
+
+ sprintf (buf, ".reg/%d", elfcore_make_pid (abfd)); + len = strlen (buf) + 1; + name = bfd_alloc (abfd, len); + if (name == NULL)
+ return FALSE;
+ memcpy (name, buf, len);
+
+ sect = bfd_make_section_anyway (abfd, name);
+ if (sect == NULL)
+ return FALSE;
+
+#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
+ sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
+ sect->filepos = note->descpos
+ + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
+#endif
+
+#if defined (HAVE_LWPSTATUS_T_PR_REG)
+ sect->size = sizeof (lwpstat.pr_reg);
+ sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg); +#endif
+
+ sect->flags = SEC_HAS_CONTENTS;
+ sect->alignment_power = 2;
+
+ if (!elfcore_maybe_make_sect (abfd, ".reg", sect))
+ return FALSE;
+
+ /* Make a ".reg2/999" section */
+
+ sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd)); + len = strlen (buf) + 1; + name = bfd_alloc (abfd, len); + if (name == NULL)
+ return FALSE;
+ memcpy (name, buf, len);
+
+ sect = bfd_make_section_anyway (abfd, name);
+ if (sect == NULL)
+ return FALSE;
+
+#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
+ sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
+ sect->filepos = note->descpos
+ + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
+#endif
+
+#if defined (HAVE_LWPSTATUS_T_PR_FPREG)
+ sect->size = sizeof (lwpstat.pr_fpreg);
+ sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg); +#endif
+
+ sect->flags = SEC_HAS_CONTENTS;
+ sect->alignment_power = 2;
+
+ return elfcore_maybe_make_sect (abfd, ".reg2", sect); +}
+#endif /* defined (HAVE_LWPSTATUS_T) */
+
+#if defined (HAVE_WIN32_PSTATUS_T)
+static bfd_boolean
+elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note) +{
+ char buf[30]; + char *name; + size_t len; + asection *sect; + win32_pstatus_t pstatus;
+
+ if (note->descsz < sizeof (pstatus))
+ return TRUE;
+
+ memcpy (&pstatus, note->descdata, sizeof (pstatus)); +
+ switch (pstatus.data_type)
+ {
+ case NOTE_INFO_PROCESS:
+ /* FIXME: need to add ->core_command. */ + elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal; + elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid; + break;
+
+ case NOTE_INFO_THREAD:
+ /* Make a ".reg/999" section. */
+ sprintf (buf, ".reg/%d", pstatus.data.thread_info.tid);
+
+ len = strlen (buf) + 1; + name = bfd_alloc (abfd, len); + if (name == NULL)
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