*** empty log message ***
[deliverable/binutils-gdb.git] / bfd / elf32-hppa.c
index f8c88b15583b455802bb73c11d8ee4ae47ae161f..b204c57df462d85056fe7cefd193256574266e3a 100644 (file)
@@ -1,6 +1,6 @@
 /* BFD back-end for HP PA-RISC ELF files.
    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,
-   2002 Free Software Foundation, Inc.
+   2002, 2003 Free Software Foundation, Inc.
 
    Original code by
        Center for Software Science
@@ -8,21 +8,21 @@
        University of Utah
    Largely rewritten by Alan Modra <alan@linuxcare.com.au>
 
-This file is part of BFD, the Binary File Descriptor library.
+   This file is part of BFD, the Binary File Descriptor library.
 
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include "bfd.h"
 #include "sysdep.h"
@@ -111,7 +111,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
    :           ldw -24(%sp),%rp                ; restore the original rp
    :           ldsid (%rp),%r1
    :           mtsp %r1,%sr0
-   :           be,n 0(%sr0,%rp)                ; inter-space return  */
+   :           be,n 0(%sr0,%rp)                ; inter-space return.  */
 
 #define PLT_ENTRY_SIZE 8
 #define GOT_ENTRY_SIZE 4
@@ -1685,10 +1685,6 @@ elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
   bfd_signed_vma *local_got_refcounts;
   bfd_signed_vma *local_plt_refcounts;
   const Elf_Internal_Rela *rel, *relend;
-  unsigned long r_symndx;
-  struct elf_link_hash_entry *h;
-  struct elf32_hppa_link_hash_table *htab;
-  bfd *dynobj;
 
   elf_section_data (sec)->local_dynrel = NULL;
 
@@ -1698,112 +1694,81 @@ elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
   local_plt_refcounts = local_got_refcounts;
   if (local_plt_refcounts != NULL)
     local_plt_refcounts += symtab_hdr->sh_info;
-  htab = hppa_link_hash_table (info);
-  dynobj = htab->elf.dynobj;
-  if (dynobj == NULL)
-    return TRUE;
 
   relend = relocs + sec->reloc_count;
   for (rel = relocs; rel < relend; rel++)
-    switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
-      {
-      case R_PARISC_DLTIND14F:
-      case R_PARISC_DLTIND14R:
-      case R_PARISC_DLTIND21L:
-       r_symndx = ELF32_R_SYM (rel->r_info);
-       if (r_symndx >= symtab_hdr->sh_info)
-         {
-           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-           if (h->got.refcount > 0)
-             h->got.refcount -= 1;
-         }
-       else if (local_got_refcounts != NULL)
-         {
-           if (local_got_refcounts[r_symndx] > 0)
-             local_got_refcounts[r_symndx] -= 1;
-         }
-       break;
-
-      case R_PARISC_PCREL12F:
-      case R_PARISC_PCREL17C:
-      case R_PARISC_PCREL17F:
-      case R_PARISC_PCREL22F:
-       r_symndx = ELF32_R_SYM (rel->r_info);
-       if (r_symndx >= symtab_hdr->sh_info)
-         {
-           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-           if (h->plt.refcount > 0)
-             h->plt.refcount -= 1;
-         }
-       break;
-
-      case R_PARISC_PLABEL14R:
-      case R_PARISC_PLABEL21L:
-      case R_PARISC_PLABEL32:
-       r_symndx = ELF32_R_SYM (rel->r_info);
-       if (r_symndx >= symtab_hdr->sh_info)
-         {
-           struct elf32_hppa_link_hash_entry *eh;
-           struct elf32_hppa_dyn_reloc_entry **pp;
-           struct elf32_hppa_dyn_reloc_entry *p;
-
-           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-
-           if (h->plt.refcount > 0)
-             h->plt.refcount -= 1;
+    {
+      unsigned long r_symndx;
+      unsigned int r_type;
+      struct elf_link_hash_entry *h = NULL;
 
-           eh = (struct elf32_hppa_link_hash_entry *) h;
+      r_symndx = ELF32_R_SYM (rel->r_info);
+      if (r_symndx >= symtab_hdr->sh_info)
+       {
+         struct elf32_hppa_link_hash_entry *eh;
+         struct elf32_hppa_dyn_reloc_entry **pp;
+         struct elf32_hppa_dyn_reloc_entry *p;
 
-           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
-             if (p->sec == sec)
-               {
-#if RELATIVE_DYNRELOCS
-                 if (!IS_ABSOLUTE_RELOC (rtype))
-                   p->relative_count -= 1;
-#endif
-                 p->count -= 1;
-                 if (p->count == 0)
-                   *pp = p->next;
-                 break;
-               }
-         }
-       else if (local_plt_refcounts != NULL)
-         {
-           if (local_plt_refcounts[r_symndx] > 0)
-             local_plt_refcounts[r_symndx] -= 1;
-         }
-       break;
+         h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+         eh = (struct elf32_hppa_link_hash_entry *) h;
 
-      case R_PARISC_DIR32:
-       r_symndx = ELF32_R_SYM (rel->r_info);
-       if (r_symndx >= symtab_hdr->sh_info)
-         {
-           struct elf32_hppa_link_hash_entry *eh;
-           struct elf32_hppa_dyn_reloc_entry **pp;
-           struct elf32_hppa_dyn_reloc_entry *p;
+         for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+           if (p->sec == sec)
+             {
+               /* Everything must go for SEC.  */
+               *pp = p->next;
+               break;
+             }
+       }
 
-           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+      r_type = ELF32_R_TYPE (rel->r_info);
+      switch (r_type)
+       {
+       case R_PARISC_DLTIND14F:
+       case R_PARISC_DLTIND14R:
+       case R_PARISC_DLTIND21L:
+         if (h != NULL)
+           {
+             if (h->got.refcount > 0)
+               h->got.refcount -= 1;
+           }
+         else if (local_got_refcounts != NULL)
+           {
+             if (local_got_refcounts[r_symndx] > 0)
+               local_got_refcounts[r_symndx] -= 1;
+           }
+         break;
 
-           eh = (struct elf32_hppa_link_hash_entry *) h;
+       case R_PARISC_PCREL12F:
+       case R_PARISC_PCREL17C:
+       case R_PARISC_PCREL17F:
+       case R_PARISC_PCREL22F:
+         if (h != NULL)
+           {
+             if (h->plt.refcount > 0)
+               h->plt.refcount -= 1;
+           }
+         break;
 
-           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
-             if (p->sec == sec)
-               {
-#if RELATIVE_DYNRELOCS
-                 if (!IS_ABSOLUTE_RELOC (R_PARISC_DIR32))
-                   p->relative_count -= 1;
-#endif
-                 p->count -= 1;
-                 if (p->count == 0)
-                   *pp = p->next;
-                 break;
-               }
-         }
-       break;
+       case R_PARISC_PLABEL14R:
+       case R_PARISC_PLABEL21L:
+       case R_PARISC_PLABEL32:
+         if (h != NULL)
+           {
+             if (h->plt.refcount > 0)
+               h->plt.refcount -= 1;
+           }
+         else if (local_plt_refcounts != NULL)
+           {
+             if (local_plt_refcounts[r_symndx] > 0)
+               local_plt_refcounts[r_symndx] -= 1;
+           }
+         break;
 
-      default:
-       break;
-      }
+       default:
+         break;
+       }
+    }
 
   return TRUE;
 }
@@ -2686,12 +2651,15 @@ group_sections (htab, stub_group_size, stubs_always_before_branch)
          asection *curr;
          asection *prev;
          bfd_size_type total;
+         bfd_boolean big_sec;
 
          curr = tail;
          if (tail->_cooked_size)
            total = tail->_cooked_size;
          else
            total = tail->_raw_size;
+         big_sec = total >= stub_group_size;
+
          while ((prev = PREV_SEC (curr)) != NULL
                 && ((total += curr->output_offset - prev->output_offset)
                     < stub_group_size))
@@ -2719,8 +2687,11 @@ group_sections (htab, stub_group_size, stubs_always_before_branch)
          while (tail != curr && (tail = prev) != NULL);
 
          /* But wait, there's more!  Input sections up to 240000
-            bytes before the stub section can be handled by it too.  */
-         if (!stubs_always_before_branch)
+            bytes before the stub section can be handled by it too.
+            Don't do this if we have a really large section after the
+            stubs, as adding more stubs increases the chance that
+            branches may not reach into the stub section.  */
+         if (!stubs_always_before_branch && !big_sec)
            {
              total = 0;
              while (prev != NULL
@@ -2901,11 +2872,22 @@ elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size,
   if (stub_group_size == 1)
     {
       /* Default values.  */
-      stub_group_size = 7680000;
-      if (htab->has_17bit_branch || htab->multi_subspace)
-       stub_group_size = 240000;
-      if (htab->has_12bit_branch)
-       stub_group_size = 7500;
+      if (stubs_always_before_branch)
+       {
+         stub_group_size = 7680000;
+         if (htab->has_17bit_branch || htab->multi_subspace)
+           stub_group_size = 240000;
+         if (htab->has_12bit_branch)
+           stub_group_size = 7500;
+       }
+      else
+       {
+         stub_group_size = 6971392;
+         if (htab->has_17bit_branch || htab->multi_subspace)
+           stub_group_size = 217856;
+         if (htab->has_12bit_branch)
+           stub_group_size = 6808;
+       }
     }
 
   group_sections (htab, stub_group_size, stubs_always_before_branch);
@@ -3416,15 +3398,14 @@ final_link_relocate (input_section, contents, rel, value, htab, sym_sec, h)
     case R_PARISC_DPREL14R:
     case R_PARISC_DPREL14F:
     /* For all the DP relative relocations, we need to examine the symbol's
-       section.  If it's a code section, then "data pointer relative" makes
-       no sense.  In that case we don't adjust the "value", and for 21 bit
-       addil instructions, we change the source addend register from %dp to
-       %r0.  This situation commonly arises when a variable's "constness"
+       section.  If it has no section or if it's a code section, then
+       "data pointer relative" makes no sense.  In that case we don't
+       adjust the "value", and for 21 bit addil instructions, we change the
+       source addend register from %dp to %r0.  This situation commonly
+       arises for undefined weak symbols and when a variable's "constness"
        is declared differently from the way the variable is defined.  For
        instance: "extern int foo" with foo defined as "const int foo".  */
-      if (sym_sec == NULL)
-       break;
-      if ((sym_sec->flags & SEC_CODE) != 0)
+      if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
        {
          if ((insn & ((0x3f << 26) | (0x1f << 21)))
              == (((int) OP_ADDIL << 26) | (27 << 21)))
@@ -3689,14 +3670,11 @@ elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
                   && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
                   && h->elf.type != STT_PARISC_MILLI)
            {
-             if (info->symbolic && !info->allow_shlib_undefined)
-               {
-                 if (!((*info->callbacks->undefined_symbol)
-                       (info, h->elf.root.root.string, input_bfd,
-                        input_section, rel->r_offset, FALSE)))
-                   return FALSE;
-                 warned_undef = TRUE;
-               }
+             if (!((*info->callbacks->undefined_symbol)
+                   (info, h->elf.root.root.string, input_bfd,
+                    input_section, rel->r_offset, FALSE)))
+               return FALSE;
+             warned_undef = TRUE;
            }
          else
            {
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