Speedup ELF orphan placement for relocatable link
[deliverable/binutils-gdb.git] / ld / emultempl / elf32.em
index 9a2fe899477151079645b63c8fdf1ad61c222e13..3e9f684985b8080677092753437a453e6f12dfc8 100644 (file)
@@ -12,9 +12,7 @@ fragment <<EOF
 /* This file is is generated by a shell script.  DO NOT EDIT! */
 
 /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
-   Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-   2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
-   Free Software Foundation, Inc.
+   Copyright (C) 1991-2016 Free Software Foundation, Inc.
    Written by Steve Chamberlain <sac@cygnus.com>
    ELF support by Ian Lance Taylor <ian@cygnus.com>
 
@@ -40,11 +38,9 @@ fragment <<EOF
 #include "sysdep.h"
 #include "bfd.h"
 #include "libiberty.h"
-#include "filenames.h"
 #include "safe-ctype.h"
+#include "filenames.h"
 #include "getopt.h"
-#include "md5.h"
-#include "sha1.h"
 #include <fcntl.h>
 
 #include "bfdlink.h"
@@ -56,6 +52,7 @@ fragment <<EOF
 #include "ldlang.h"
 #include "ldfile.h"
 #include "ldemul.h"
+#include "ldbuildid.h"
 #include <ldgram.h>
 #include "elf/common.h"
 #include "elf-bfd.h"
@@ -63,6 +60,7 @@ fragment <<EOF
 
 /* Declare functions used by various EXTRA_EM_FILEs.  */
 static void gld${EMULATION_NAME}_before_parse (void);
+static void gld${EMULATION_NAME}_after_parse (void);
 static void gld${EMULATION_NAME}_after_open (void);
 static void gld${EMULATION_NAME}_before_allocation (void);
 static void gld${EMULATION_NAME}_after_allocation (void);
@@ -105,6 +103,22 @@ gld${EMULATION_NAME}_before_parse (void)
   input_flags.dynamic = ${DYNAMIC_LINK-TRUE};
   config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
   config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo TRUE ; else echo FALSE ; fi`;
+  `if test -n "$CALL_NOP_BYTE" ; then echo link_info.call_nop_byte = $CALL_NOP_BYTE; fi`;
+}
+
+EOF
+fi
+
+if test x"$LDEMUL_AFTER_PARSE" != xgld"$EMULATION_NAME"_after_parse; then
+fragment <<EOF
+
+static void
+gld${EMULATION_NAME}_after_parse (void)
+{
+  if (bfd_link_pie (&link_info))
+    link_info.flags_1 |= (bfd_vma) DF_1_PIE;
+
+  after_parse_default ();
 }
 
 EOF
@@ -897,53 +911,20 @@ id_note_section_size (bfd *abfd ATTRIBUTE_UNUSED)
 {
   const char *style = emit_note_gnu_build_id;
   bfd_size_type size;
+  bfd_size_type build_id_size;
 
   size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
   size = (size + 3) & -(bfd_size_type) 4;
 
-  if (!strcmp (style, "md5") || !strcmp (style, "uuid"))
-    size += 128 / 8;
-  else if (!strcmp (style, "sha1"))
-    size += 160 / 8;
-  else if (!strncmp (style, "0x", 2))
-    {
-      /* ID is in string form (hex).  Convert to bits.  */
-      const char *id = style + 2;
-      do
-       {
-         if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
-           {
-             ++size;
-             id += 2;
-           }
-         else if (*id == '-' || *id == ':')
-           ++id;
-         else
-           {
-             size = 0;
-             break;
-           }
-       } while (*id != '\0');
-    }
+  build_id_size = compute_build_id_size (style);
+  if (build_id_size)
+    size += build_id_size;
   else
     size = 0;
 
   return size;
 }
 
-static unsigned char
-read_hex (const char xdigit)
-{
-  if (ISDIGIT (xdigit))
-    return xdigit - '0';
-  if (ISUPPER (xdigit))
-    return xdigit - 'A' + 0xa;
-  if (ISLOWER (xdigit))
-    return xdigit - 'a' + 0xa;
-  abort ();
-  return 0;
-}
-
 static bfd_boolean
 write_build_id (bfd *abfd)
 {
@@ -956,7 +937,6 @@ write_build_id (bfd *abfd)
   bfd_size_type size;
   file_ptr position;
   Elf_External_Note *e_note;
-  typedef void (*sum_fn) (const void *, size_t, void *);
 
   style = t->o->build_id.style;
   asec = t->o->build_id.sec;
@@ -988,55 +968,7 @@ write_build_id (bfd *abfd)
   bfd_h_put_32 (abfd, NT_GNU_BUILD_ID, &e_note->type);
   memcpy (e_note->name, "GNU", sizeof "GNU");
 
-  if (strcmp (style, "md5") == 0)
-    {
-      struct md5_ctx ctx;
-
-      md5_init_ctx (&ctx);
-      if (!bed->s->checksum_contents (abfd, (sum_fn) &md5_process_bytes, &ctx))
-       return FALSE;
-      md5_finish_ctx (&ctx, id_bits);
-    }
-  else if (strcmp (style, "sha1") == 0)
-    {
-      struct sha1_ctx ctx;
-
-      sha1_init_ctx (&ctx);
-      if (!bed->s->checksum_contents (abfd, (sum_fn) &sha1_process_bytes, &ctx))
-       return FALSE;
-      sha1_finish_ctx (&ctx, id_bits);
-    }
-  else if (strcmp (style, "uuid") == 0)
-    {
-      int n;
-      int fd = open ("/dev/urandom", O_RDONLY);
-      if (fd < 0)
-       return FALSE;
-      n = read (fd, id_bits, size);
-      close (fd);
-      if (n < (int) size)
-       return FALSE;
-    }
-  else if (strncmp (style, "0x", 2) == 0)
-    {
-      /* ID is in string form (hex).  Convert to bits.  */
-      const char *id = style + 2;
-      size_t n = 0;
-      do
-       {
-         if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
-           {
-             id_bits[n] = read_hex (*id++) << 4;
-             id_bits[n++] |= read_hex (*id++);
-           }
-         else if (*id == '-' || *id == ':')
-           ++id;
-         else
-           abort ();           /* Should have been validated earlier.  */
-       } while (*id != '\0');
-    }
-  else
-    abort ();                  /* Should have been validated earlier.  */
+  generate_build_id (abfd, style, bed->s->checksum_contents, id_bits, size);
 
   position = i_shdr->sh_offset + asec->output_offset;
   size = asec->size;
@@ -1099,8 +1031,9 @@ gld${EMULATION_NAME}_after_open (void)
 
       /* Find an ELF input.  */
       for (abfd = link_info.input_bfds;
-          abfd != (bfd *) NULL; abfd = abfd->link_next)
-       if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+          abfd != (bfd *) NULL; abfd = abfd->link.next)
+       if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+           && bfd_count_sections (abfd) != 0)
          break;
 
       /* PR 10555: If there are no ELF input files do not try to
@@ -1113,31 +1046,73 @@ gld${EMULATION_NAME}_after_open (void)
        }
     }
 
-  if (link_info.relocatable)
-    return;
+  if (bfd_link_relocatable (&link_info))
+    {
+      if (link_info.execstack == ! link_info.noexecstack)
+       /* PR ld/16744: If "-z [no]execstack" has been specified on the
+          command line and we are perfoming a relocatable link then no
+          PT_GNU_STACK segment will be created and so the
+          linkinfo.[no]execstack values set in _handle_option() will have no
+          effect.  Instead we create a .note.GNU-stack section in much the
+          same way as the assembler does with its --[no]execstack option.  */
+       (void) bfd_make_section_with_flags (link_info.input_bfds,
+                                           ".note.GNU-stack",
+                                           SEC_READONLY | (link_info.execstack ? SEC_CODE : 0));
 
-  if (link_info.eh_frame_hdr
-      && !link_info.traditional_format)
+      return;
+    }
+
+  if (!link_info.traditional_format)
     {
       bfd *abfd, *elfbfd = NULL;
       bfd_boolean warn_eh_frame = FALSE;
       asection *s;
+      int seen_type = 0;
 
-      for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
+      for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
        {
-         if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
-           elfbfd = abfd;
-         if (!warn_eh_frame)
+         int type = 0;
+         for (s = abfd->sections; s && type < COMPACT_EH_HDR; s = s->next)
            {
-             s = bfd_get_section_by_name (abfd, ".eh_frame");
-             while (s != NULL
-                    && (s->size <= 8
-                        || bfd_is_abs_section (s->output_section)))
-               s = bfd_get_next_section_by_name (s);
-             warn_eh_frame = s != NULL;
+             const char *name = bfd_get_section_name (abfd, s);
+
+             if (bfd_is_abs_section (s->output_section))
+               continue;
+             if (CONST_STRNEQ (name, ".eh_frame_entry"))
+               type = COMPACT_EH_HDR;
+             else if (strcmp (name, ".eh_frame") == 0 && s->size > 8)
+               type = DWARF2_EH_HDR;
            }
-         if (elfbfd && warn_eh_frame)
-           break;
+
+         if (type != 0)
+           {
+             if (seen_type == 0)
+               {
+                 seen_type = type;
+               }
+             else if (seen_type != type)
+               {
+                 einfo (_("%P%F: compact frame descriptions incompatible with"
+                        " DWARF2 .eh_frame from %B\n"),
+                        type == DWARF2_EH_HDR ? abfd : elfbfd);
+                 break;
+               }
+
+             if (!elfbfd
+                 && (type == COMPACT_EH_HDR || link_info.eh_frame_hdr_type != 0))
+               {
+                 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+                   elfbfd = abfd;
+
+                 warn_eh_frame = TRUE;
+               }
+           }
+
+         if (seen_type == COMPACT_EH_HDR)
+           link_info.eh_frame_hdr_type = COMPACT_EH_HDR;
+
+         if (bfd_count_sections (abfd) == 0)
+           continue;
        }
       if (elfbfd)
        {
@@ -1282,12 +1257,16 @@ fragment <<EOF
          rp = bfd_elf_get_runpath_list (link_info.output_bfd, &link_info);
          for (; !found && rp != NULL; rp = rp->next)
            {
-             char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
+             const char *tmpname = rp->name;
+
+             if (IS_ABSOLUTE_PATH (tmpname))
+               tmpname = gld${EMULATION_NAME}_add_sysroot (tmpname);
              found = (rp->by == l->by
                       && gld${EMULATION_NAME}_search_needed (tmpname,
                                                              &n,
                                                              force));
-             free (tmpname);
+             if (tmpname != rp->name)
+               free ((char *) tmpname);
            }
          if (found)
            break;
@@ -1341,6 +1320,10 @@ fragment <<EOF
       einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
             l->name, l->by);
     }
+
+  if (link_info.eh_frame_hdr_type == COMPACT_EH_HDR)
+    if (bfd_elf_parse_eh_frame_entries (NULL, &link_info) == FALSE)
+      einfo (_("%P%F: Failed to parse EH frame entries.\n"));
 }
 
 EOF
@@ -1471,6 +1454,11 @@ gld${EMULATION_NAME}_append_to_separated_string (char **to, char *op_arg)
     }
 }
 
+#if defined(__GNUC__) && GCC_VERSION < 4006
+  /* Work around a GCC uninitialized warning bug fixed in GCC 4.6.  */
+static struct bfd_link_hash_entry ehdr_start_empty;
+#endif
+
 /* This is called after the sections have been attached to output
    sections, but before any sizes or addresses have been set.  */
 
@@ -1480,6 +1468,13 @@ gld${EMULATION_NAME}_before_allocation (void)
   const char *rpath;
   asection *sinterp;
   bfd *abfd;
+  struct elf_link_hash_entry *ehdr_start = NULL;
+#if defined(__GNUC__) && GCC_VERSION < 4006
+  /* Work around a GCC uninitialized warning bug fixed in GCC 4.6.  */
+  struct bfd_link_hash_entry ehdr_start_save = ehdr_start_empty;
+#else
+  struct bfd_link_hash_entry ehdr_start_save;
+#endif
 
   if (is_elf_hash_table (link_info.hash))
     {
@@ -1487,7 +1482,7 @@ gld${EMULATION_NAME}_before_allocation (void)
 
       /* Make __ehdr_start hidden if it has been referenced, to
         prevent the symbol from being dynamic.  */
-      if (!link_info.relocatable)
+      if (!bfd_link_relocatable (&link_info))
        {
          struct elf_link_hash_entry *h
            = elf_link_hash_lookup (elf_hash_table (&link_info), "__ehdr_start",
@@ -1504,6 +1499,16 @@ gld${EMULATION_NAME}_before_allocation (void)
              _bfd_elf_link_hash_hide_symbol (&link_info, h, TRUE);
              if (ELF_ST_VISIBILITY (h->other) != STV_INTERNAL)
                h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN;
+            /* Don't leave the symbol undefined.  Undefined hidden
+               symbols typically won't have dynamic relocations, but
+               we most likely will need dynamic relocations for
+               __ehdr_start if we are building a PIE or shared
+               library.  */
+            ehdr_start = h;
+            ehdr_start_save = h->root;
+            h->root.type = bfd_link_hash_defined;
+            h->root.u.def.section = bfd_abs_section_ptr;
+            h->root.u.def.value = 0;
            }
        }
 
@@ -1519,7 +1524,7 @@ gld${EMULATION_NAME}_before_allocation (void)
   if (rpath == NULL)
     rpath = (const char *) getenv ("LD_RUN_PATH");
 
-  for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
+  for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
     if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
       {
        const char *audit_libs = elf_dt_audit (abfd);
@@ -1620,6 +1625,14 @@ ${ELF_INTERPRETER_SET_DEFAULT}
 
   if (!bfd_elf_size_dynsym_hash_dynstr (link_info.output_bfd, &link_info))
     einfo ("%P%F: failed to set dynamic section sizes: %E\n");
+
+  if (ehdr_start != NULL)
+    {
+      /* If we twiddled __ehdr_start to defined earlier, put it back
+        as it was.  */
+      ehdr_start->root.type = ehdr_start_save.type;
+      ehdr_start->root.u = ehdr_start_save.u;
+    }
 }
 
 EOF
@@ -1638,42 +1651,46 @@ gld${EMULATION_NAME}_open_dynamic_archive
 {
   const char *filename;
   char *string;
+  size_t len;
+  bfd_boolean opened = FALSE;
 
   if (! entry->flags.maybe_archive)
     return FALSE;
 
   filename = entry->filename;
+  len = strlen (search->name) + strlen (filename);
+  if (entry->flags.full_name_provided)
+    {
+      len += sizeof "/";
+      string = (char *) xmalloc (len);
+      sprintf (string, "%s/%s", search->name, filename);
+    }
+  else
+    {
+      size_t xlen = 0;
 
-  /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
-     is defined, but it does not seem worth the headache to optimize
-     away those two bytes of space.  */
-  string = (char *) xmalloc (strlen (search->name)
-                            + strlen (filename)
-                            + strlen (arch)
+      len += strlen (arch) + sizeof "/lib.so";
 #ifdef EXTRA_SHLIB_EXTENSION
-                            + strlen (EXTRA_SHLIB_EXTENSION)
+      xlen = (strlen (EXTRA_SHLIB_EXTENSION) > 3
+             ? strlen (EXTRA_SHLIB_EXTENSION) - 3
+             : 0);
 #endif
-                            + sizeof "/lib.so");
-
-  sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
-
+      string = (char *) xmalloc (len + xlen);
+      sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
 #ifdef EXTRA_SHLIB_EXTENSION
-  /* Try the .so extension first.  If that fails build a new filename
-     using EXTRA_SHLIB_EXTENSION.  */
-  if (! ldfile_try_open_bfd (string, entry))
-    {
-      sprintf (string, "%s/lib%s%s%s", search->name,
-              filename, arch, EXTRA_SHLIB_EXTENSION);
+      /* Try the .so extension first.  If that fails build a new filename
+        using EXTRA_SHLIB_EXTENSION.  */
+      opened = ldfile_try_open_bfd (string, entry);
+      if (!opened)
+       strcpy (string + len - 4, EXTRA_SHLIB_EXTENSION);
 #endif
+    }
 
-  if (! ldfile_try_open_bfd (string, entry))
+  if (!opened && !ldfile_try_open_bfd (string, entry))
     {
       free (string);
       return FALSE;
     }
-#ifdef EXTRA_SHLIB_EXTENSION
-    }
-#endif
 
   entry->filename = string;
 
@@ -1698,7 +1715,8 @@ gld${EMULATION_NAME}_open_dynamic_archive
       /* Rather than duplicating the logic above.  Just use the
         filename we recorded earlier.  */
 
-      filename = lbasename (entry->filename);
+      if (!entry->flags.full_name_provided)
+        filename = lbasename (entry->filename);
       bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
     }
 
@@ -1792,6 +1810,9 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
       { ".rodata",
        SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
        0, 0, 0, 0 },
+      { ".tdata",
+       SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_THREAD_LOCAL,
+       0, 0, 0, 0 },
       { ".data",
        SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
        0, 0, 0, 0 },
@@ -1815,6 +1836,7 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
     {
       orphan_text = 0,
       orphan_rodata,
+      orphan_tdata,
       orphan_data,
       orphan_bss,
       orphan_rel,
@@ -1830,8 +1852,10 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
   int isdyn = 0;
   int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
   unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
+  flagword flags;
+  asection *nexts;
 
-  if (! link_info.relocatable
+  if (!bfd_link_relocatable (&link_info)
       && link_info.combreloc
       && (s->flags & SEC_ALLOC))
     {
@@ -1868,11 +1892,11 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
 
        if (os->bfd_section != NULL
            && (os->bfd_section->flags == 0
-               || (_bfd_elf_match_sections_by_type (link_info.output_bfd,
-                                                    os->bfd_section,
-                                                    s->owner, s)
-                   && ((s->flags ^ os->bfd_section->flags)
-                       & (SEC_LOAD | SEC_ALLOC)) == 0)))
+               || (((s->flags ^ os->bfd_section->flags)
+                    & (SEC_LOAD | SEC_ALLOC)) == 0
+                   && _bfd_elf_match_sections_by_type (link_info.output_bfd,
+                                                       os->bfd_section,
+                                                       s->owner, s))))
          {
            /* We already have an output section statement with this
               name, and its bfd section has compatible flags.
@@ -1913,8 +1937,7 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
 
   /* If this is a final link, then always put .gnu.warning.SYMBOL
      sections into the .text section to get them out of the way.  */
-  if (link_info.executable
-      && ! link_info.relocatable
+  if (bfd_link_executable (&link_info)
       && CONST_STRNEQ (s->name, ".gnu.warning.")
       && hold[orphan_text].os != NULL)
     {
@@ -1923,6 +1946,26 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
       return os;
     }
 
+  flags = s->flags;
+  if (!bfd_link_relocatable (&link_info))
+    {
+      nexts = s;
+      while ((nexts = bfd_get_next_section_by_name (nexts->owner, nexts))
+            != NULL)
+       if (nexts->output_section == NULL
+           && (nexts->flags & SEC_EXCLUDE) == 0
+           && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
+           && (nexts->owner->flags & DYNAMIC) == 0
+           && nexts->owner->usrdata != NULL
+           && !(((lang_input_statement_type *) nexts->owner->usrdata)
+                ->flags.just_syms)
+           && _bfd_elf_match_sections_by_type (nexts->owner, nexts,
+                                               s->owner, s))
+         flags = (((flags ^ SEC_READONLY)
+                   | (nexts->flags ^ SEC_READONLY))
+                  ^ SEC_READONLY);
+    }
+
   /* Decide which segment the section should go in based on the
      section name and section flags.  We put loadable .note sections
      right after the .interp section, so that the PT_NOTE segment is
@@ -1930,25 +1973,27 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
      in the first page.  */
 
   place = NULL;
-  if ((s->flags & (SEC_ALLOC | SEC_DEBUGGING)) == 0)
+  if ((flags & (SEC_ALLOC | SEC_DEBUGGING)) == 0)
     place = &hold[orphan_nonalloc];
-  else if ((s->flags & SEC_ALLOC) == 0)
+  else if ((flags & SEC_ALLOC) == 0)
     ;
-  else if ((s->flags & SEC_LOAD) != 0
+  else if ((flags & SEC_LOAD) != 0
           && ((iself && sh_type == SHT_NOTE)
               || (!iself && CONST_STRNEQ (secname, ".note"))))
     place = &hold[orphan_interp];
-  else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) == 0)
+  else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) == 0)
     place = &hold[orphan_bss];
-  else if ((s->flags & SEC_SMALL_DATA) != 0)
+  else if ((flags & SEC_SMALL_DATA) != 0)
     place = &hold[orphan_sdata];
-  else if ((s->flags & SEC_READONLY) == 0)
+  else if ((flags & SEC_THREAD_LOCAL) != 0)
+    place = &hold[orphan_tdata];
+  else if ((flags & SEC_READONLY) == 0)
     place = &hold[orphan_data];
   else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
            || (!iself && CONST_STRNEQ (secname, ".rel")))
-          && (s->flags & SEC_LOAD) != 0)
+          && (flags & SEC_LOAD) != 0)
     place = &hold[orphan_rel];
-  else if ((s->flags & SEC_CODE) == 0)
+  else if ((flags & SEC_CODE) == 0)
     place = &hold[orphan_rodata];
   else
     place = &hold[orphan_text];
@@ -1965,8 +2010,9 @@ gld${EMULATION_NAME}_place_orphan (asection *s,
        }
       after = place->os;
       if (after == NULL)
-       after = lang_output_section_find_by_flags
-         (s, &place->os, _bfd_elf_match_sections_by_type);
+       after
+         = lang_output_section_find_by_flags (s, flags, &place->os,
+                                              _bfd_elf_match_sections_by_type);
       if (after == NULL)
        /* *ABS* is always the first output section statement.  */
        after = &lang_output_section_statement.head->output_section_statement;
@@ -1983,9 +2029,12 @@ fragment <<EOF
 static void
 gld${EMULATION_NAME}_after_allocation (void)
 {
-  bfd_boolean need_layout = bfd_elf_discard_info (link_info.output_bfd,
-                                                 &link_info);
-  gld${EMULATION_NAME}_map_segments (need_layout);
+  int need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info);
+
+  if (need_layout < 0)
+    einfo ("%X%P: .eh_frame/.stab edit: %E\n");
+  else
+    gld${EMULATION_NAME}_map_segments (need_layout);
 }
 EOF
 fi
@@ -1997,7 +2046,7 @@ static char *
 gld${EMULATION_NAME}_get_script (int *isfile)
 EOF
 
-if test -n "$COMPILE_IN"
+if test x"$COMPILE_IN" = xyes
 then
 # Scripts compiled in.
 
@@ -2008,11 +2057,11 @@ fragment <<EOF
 {
   *isfile = 0;
 
-  if (link_info.relocatable && config.build_constructors)
+  if (bfd_link_relocatable (&link_info) && config.build_constructors)
     return
 EOF
 sed $sc ldscripts/${EMULATION_NAME}.xu                 >> e${EMULATION_NAME}.c
-echo '  ; else if (link_info.relocatable) return'      >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xr                 >> e${EMULATION_NAME}.c
 echo '  ; else if (!config.text_read_only) return'     >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xbn                        >> e${EMULATION_NAME}.c
@@ -2022,26 +2071,28 @@ sed $sc ldscripts/${EMULATION_NAME}.xn                  >> e${EMULATION_NAME}.c
 fi
 if test -n "$GENERATE_PIE_SCRIPT" ; then
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
-echo '  ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
-echo '             && link_info.relro' >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_pie (&link_info)'          >> e${EMULATION_NAME}.c
+echo '             && link_info.combreloc'             >> e${EMULATION_NAME}.c
+echo '             && link_info.relro'                 >> e${EMULATION_NAME}.c
 echo '             && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xdw                        >> e${EMULATION_NAME}.c
-echo '  ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_pie (&link_info)'          >> e${EMULATION_NAME}.c
+echo '             && link_info.combreloc) return'     >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xdc                        >> e${EMULATION_NAME}.c
 fi
-echo '  ; else if (link_info.pie) return'              >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_pie (&link_info)) return'  >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xd                 >> e${EMULATION_NAME}.c
 fi
 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
-echo '  ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_dll (&link_info) && link_info.combreloc' >> e${EMULATION_NAME}.c
 echo '             && link_info.relro' >> e${EMULATION_NAME}.c
 echo '             && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xsw                        >> e${EMULATION_NAME}.c
-echo '  ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_dll (&link_info) && link_info.combreloc) return' >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xsc                        >> e${EMULATION_NAME}.c
 fi
-echo '  ; else if (link_info.shared) return'           >> e${EMULATION_NAME}.c
+echo '  ; else if (bfd_link_dll (&link_info)) return'  >> e${EMULATION_NAME}.c
 sed $sc ldscripts/${EMULATION_NAME}.xs                 >> e${EMULATION_NAME}.c
 fi
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
@@ -2062,9 +2113,9 @@ fragment <<EOF
 {
   *isfile = 1;
 
-  if (link_info.relocatable && config.build_constructors)
+  if (bfd_link_relocatable (&link_info) && config.build_constructors)
     return "ldscripts/${EMULATION_NAME}.xu";
-  else if (link_info.relocatable)
+  else if (bfd_link_relocatable (&link_info))
     return "ldscripts/${EMULATION_NAME}.xr";
   else if (!config.text_read_only)
     return "ldscripts/${EMULATION_NAME}.xbn";
@@ -2079,30 +2130,33 @@ fi
 if test -n "$GENERATE_PIE_SCRIPT" ; then
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
 fragment <<EOF
-  else if (link_info.pie && link_info.combreloc
-          && link_info.relro && (link_info.flags & DF_BIND_NOW))
+  else if (bfd_link_pie (&link_info)
+          && link_info.combreloc
+          && link_info.relro
+          && (link_info.flags & DF_BIND_NOW))
     return "ldscripts/${EMULATION_NAME}.xdw";
-  else if (link_info.pie && link_info.combreloc)
+  else if (bfd_link_pie (&link_info)
+          && link_info.combreloc)
     return "ldscripts/${EMULATION_NAME}.xdc";
 EOF
 fi
 fragment <<EOF
-  else if (link_info.pie)
+  else if (bfd_link_pie (&link_info))
     return "ldscripts/${EMULATION_NAME}.xd";
 EOF
 fi
 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
 fragment <<EOF
-  else if (link_info.shared && link_info.combreloc
+  else if (bfd_link_dll (&link_info) && link_info.combreloc
           && link_info.relro && (link_info.flags & DF_BIND_NOW))
     return "ldscripts/${EMULATION_NAME}.xsw";
-  else if (link_info.shared && link_info.combreloc)
+  else if (bfd_link_dll (&link_info) && link_info.combreloc)
     return "ldscripts/${EMULATION_NAME}.xsc";
 EOF
 fi
 fragment <<EOF
-  else if (link_info.shared)
+  else if (bfd_link_dll (&link_info))
     return "ldscripts/${EMULATION_NAME}.xs";
 EOF
 fi
@@ -2140,6 +2194,7 @@ fragment <<EOF
 #define OPTION_HASH_STYLE              (OPTION_EXCLUDE_LIBS + 1)
 #define OPTION_BUILD_ID                        (OPTION_HASH_STYLE + 1)
 #define OPTION_AUDIT                   (OPTION_BUILD_ID + 1)
+#define OPTION_COMPRESS_DEBUG          (OPTION_AUDIT + 1)
 
 static void
 gld${EMULATION_NAME}_add_options
@@ -2167,6 +2222,7 @@ EOF
 fi
 fragment <<EOF
     {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
+    {"compress-debug-sections", required_argument, NULL, OPTION_COMPRESS_DEBUG},
 EOF
 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
 fragment <<EOF
@@ -2216,6 +2272,19 @@ gld${EMULATION_NAME}_handle_option (int optc)
        emit_note_gnu_build_id = xstrdup (optarg);
       break;
 
+    case OPTION_COMPRESS_DEBUG:
+      if (strcasecmp (optarg, "none") == 0)
+       link_info.compress_debug = COMPRESS_DEBUG_NONE;
+      else if (strcasecmp (optarg, "zlib") == 0)
+       link_info.compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
+      else if (strcasecmp (optarg, "zlib-gnu") == 0)
+       link_info.compress_debug = COMPRESS_DEBUG_GNU_ZLIB;
+      else if (strcasecmp (optarg, "zlib-gabi") == 0)
+       link_info.compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
+      else
+       einfo (_("%P%F: invalid --compress-debug-sections option: \`%s'\n"),
+              optarg);
+      break;
 EOF
 
 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
@@ -2237,7 +2306,7 @@ fragment <<EOF
       break;
 
     case OPTION_EH_FRAME_HDR:
-      link_info.eh_frame_hdr = TRUE;
+      link_info.eh_frame_hdr_type = DWARF2_EH_HDR;
       break;
 
     case OPTION_GROUP:
@@ -2315,6 +2384,7 @@ fragment <<EOF
          link_info.execstack = FALSE;
        }
 EOF
+
 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
 fragment <<EOF
       else if (strcmp (optarg, "global") == 0)
@@ -2358,6 +2428,10 @@ fragment <<EOF
        link_info.relro = TRUE;
       else if (strcmp (optarg, "norelro") == 0)
        link_info.relro = FALSE;
+      else if (strcmp (optarg, "common") == 0)
+       link_info.elf_stt_common = elf_stt_common;
+      else if (strcmp (optarg, "nocommon") == 0)
+       link_info.elf_stt_common = no_elf_stt_common;
       else if (strcmp (optarg, "text") == 0)
        link_info.error_textrel = TRUE;
       else if (strcmp (optarg, "notext") == 0)
@@ -2367,6 +2441,12 @@ fragment <<EOF
 EOF
 fi
 
+if test -n "$PARSE_AND_LIST_ARGS_CASE_Z" ; then
+fragment <<EOF
+ $PARSE_AND_LIST_ARGS_CASE_Z
+EOF
+fi
+
 fragment <<EOF
       else
        einfo (_("%P: warning: -z %s ignored.\n"), optarg);
@@ -2388,111 +2468,14 @@ fragment <<EOF
 EOF
 
 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
+gld_list_options="gld${EMULATION_NAME}_list_options"
+if test -n "$PARSE_AND_LIST_OPTIONS"; then
 fragment <<EOF
 
 static void
 gld${EMULATION_NAME}_list_options (FILE * file)
 {
 EOF
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  --audit=AUDITLIB            Specify a library to use for auditing\n"));
-  fprintf (file, _("\
-  -Bgroup                     Selects group name lookup rules for DSO\n"));
-EOF
-fi
-fragment <<EOF
-  fprintf (file, _("\
-  --build-id[=STYLE]          Generate build ID note\n"));
-EOF
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  -P AUDITLIB, --depaudit=AUDITLIB\n" "\
-                             Specify a library to use for auditing dependencies\n"));
-  fprintf (file, _("\
-  --disable-new-dtags         Disable new dynamic tags\n"));
-  fprintf (file, _("\
-  --enable-new-dtags          Enable new dynamic tags\n"));
-  fprintf (file, _("\
-  --eh-frame-hdr              Create .eh_frame_hdr section\n"));
-  fprintf (file, _("\
-  --exclude-libs=LIBS         Make all symbols in LIBS hidden\n"));
-  fprintf (file, _("\
-  --hash-style=STYLE          Set hash style to sysv, gnu or both\n"));
-  fprintf (file, _("\
-  -z combreloc                Merge dynamic relocs into one section and sort\n"));
-EOF
-fi
-
-fragment <<EOF
-  fprintf (file, _("\
-  -z common-page-size=SIZE    Set common page size to SIZE\n"));
-  fprintf (file, _("\
-  -z defs                     Report unresolved symbols in object files.\n"));
-  fprintf (file, _("\
-  -z execstack                Mark executable as requiring executable stack\n"));
-EOF
-
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  -z global                   Make symbols in DSO available for subsequently\n\
-                              loaded objects\n"));
-  fprintf (file, _("\
-  -z initfirst                Mark DSO to be initialized first at runtime\n"));
-  fprintf (file, _("\
-  -z interpose                Mark object to interpose all DSOs but executable\n"));
-  fprintf (file, _("\
-  -z lazy                     Mark object lazy runtime binding (default)\n"));
-  fprintf (file, _("\
-  -z loadfltr                 Mark object requiring immediate process\n"));
-EOF
-fi
-
-fragment <<EOF
-  fprintf (file, _("\
-  -z max-page-size=SIZE       Set maximum page size to SIZE\n"));
-  fprintf (file, _("\
-  -z muldefs                  Allow multiple definitions\n"));
-EOF
-
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  -z nocombreloc              Don't merge dynamic relocs into one section\n"));
-  fprintf (file, _("\
-  -z nocopyreloc              Don't create copy relocs\n"));
-  fprintf (file, _("\
-  -z nodefaultlib             Mark object not to use default search paths\n"));
-  fprintf (file, _("\
-  -z nodelete                 Mark DSO non-deletable at runtime\n"));
-  fprintf (file, _("\
-  -z nodlopen                 Mark DSO not available to dlopen\n"));
-  fprintf (file, _("\
-  -z nodump                   Mark DSO not available to dldump\n"));
-EOF
-fi
-fragment <<EOF
-  fprintf (file, _("\
-  -z noexecstack              Mark executable as not requiring executable stack\n"));
-EOF
-if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
-fragment <<EOF
-  fprintf (file, _("\
-  -z norelro                  Don't create RELRO program header\n"));
-  fprintf (file, _("\
-  -z now                      Mark object non-lazy runtime binding\n"));
-  fprintf (file, _("\
-  -z origin                   Mark object requiring immediate \$ORIGIN\n\
-                               processing at runtime\n"));
-  fprintf (file, _("\
-  -z relro                    Create RELRO program header\n"));
-  fprintf (file, _("\
-  -z stacksize=SIZE           Set size of stack segment\n"));
-EOF
-fi
 
 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
 fragment <<EOF
@@ -2503,6 +2486,9 @@ fi
 fragment <<EOF
 }
 EOF
+else
+  gld_list_options="NULL"
+fi
 
 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
 fragment <<EOF
@@ -2518,7 +2504,7 @@ struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
   ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
   ${LDEMUL_SYSLIB-syslib_default},
   ${LDEMUL_HLL-hll_default},
-  ${LDEMUL_AFTER_PARSE-after_parse_default},
+  ${LDEMUL_AFTER_PARSE-gld${EMULATION_NAME}_after_parse},
   ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
   ${LDEMUL_AFTER_ALLOCATION-gld${EMULATION_NAME}_after_allocation},
   ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
@@ -2536,9 +2522,10 @@ struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
   gld${EMULATION_NAME}_add_options,
   gld${EMULATION_NAME}_handle_option,
   ${LDEMUL_UNRECOGNIZED_FILE-NULL},
-  ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
+  ${LDEMUL_LIST_OPTIONS-${gld_list_options}},
   ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
   ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
-  ${LDEMUL_NEW_VERS_PATTERN-NULL}
+  ${LDEMUL_NEW_VERS_PATTERN-NULL},
+  ${LDEMUL_EXTRA_MAP_FILE_TEXT-NULL}
 };
 EOF
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