binutils/bfd/elf32-ppc.c

60 /* For new-style .glink and .plt.  */
64 /* VxWorks uses its own plt layout, filled in by the static linker.  */
121    .rela.plt.unloaded, for the kernel loader.  */
1760   /* Flags used to auto-detect plt type.  */
1932 		     const asection *plt ATTRIBUTE_UNUSED,
2010   { STRING_COMMA_LEN (".plt"),             0, SHT_NOBITS,   SHF_ALLOC + SHF_EXECINSTR },
2022 /* This is what we want for new plt/got.  */
2024   { STRING_COMMA_LEN (".plt"),             0, SHT_PROGBITS, SHF_ALLOC };
2377     } plt;
2462   asection *plt;
2471   /* The (unloaded but important) .rela.plt.unloaded on VxWorks.  */
2474   /* The .got.plt section (VxWorks only)*/
2609       htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2683   htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2684   htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2763   /* And plt entries.  */
2764   if (eind->elf.plt.plist != NULL)
2766       if (edir->elf.plt.plist != NULL)
2771 	  for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2775 	      for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2778 		    dent->plt.refcount += ent->plt.refcount;
2785 	  *entp = edir->elf.plt.plist;
2788       edir->elf.plt.plist = eind->elf.plt.plist;
2789       eind->elf.plt.plist = NULL;
3039   for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3048       ent->next = h->plt.plist;
3051       ent->plt.refcount = 0;
3052       h->plt.plist = ent;
3054   ent->plt.refcount += 1;
3065   for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3546 	      /* We may need a plt entry if the symbol turns out to be
3837 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3860 	     Use the old style bss plt if a file makes plt calls
3862 	     --secure-plt and we never see REL16 relocs.  */
3881     info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
3893       if (htab->plt != NULL
3894 	  && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3934 /* Update the got, plt and dynamic reloc reference counts for the
4057 	      if (ent->plt.refcount > 0)
4058 		ent->plt.refcount -= 1;
4070 /* Set plt output section type, htab->tls_get_addr, and call the
4080       && htab->plt != NULL
4081       && htab->plt->output_section != NULL)
4083       elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4084       elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4316 		      if (ent != NULL && ent->plt.refcount > 0)
4317 			ent->plt.refcount -= 1;
4373 	 won't need a .plt entry.  */
4375       for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4376 	if (ent->plt.refcount > 0)
4393 	  h->plt.plist = NULL;
4399     h->plt.plist = NULL;
4498 /* Generate a symbol to mark plt call stubs.  For non-PIC code the sym is
4500    specifying the addend on the plt relocation.  For -fpic code, the sym
4613       for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4614 	if (ent->plt.refcount > 0)
4627 		asection *s = htab->plt;
4636 		    ent->plt.offset = plt_offset;
4661 			/* If this is the first .plt entry, make room
4679 			   in the .plt.  This is required to make
4699 		    ent->plt.offset = plt_offset;
4702 		/* We also need to make an entry in the .rela.plt section.  */
4712 			    if (ent->plt.offset
4726 			   .got.plt.  */
4733 	      ent->plt.offset = (bfd_vma) -1;
4736 	  ent->plt.offset = (bfd_vma) -1;
4740 	  h->plt.plist = NULL;
4746       h->plt.plist = NULL;
4817 	 resolve directly to the function rather than going via the plt.
5059 	 for old plt/got the got size will be 0 to 32764 (not allocated),
5060 	 or 32780 to 65536 (header allocated).  For new plt/got, the
5128       if (s == htab->plt
5139 	  if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
5171 	     .rela.plt.  We must create both sections in
5207       if (htab->plt != NULL && htab->plt->size != 0)
5396 	      && htab->plt != NULL)
5409 		      tsec = htab->plt;
5410 		      toff = ent->plt.offset;
5516 	  if (tsec == htab->plt
6695 	      relocation = (htab->plt->output_section->vma
6696 			    + htab->plt->output_offset
6697 			    + ent->plt.offset);
6771 		|| htab->plt == NULL)
6785 	      relocation = (htab->plt->output_section->vma
6786 			    + htab->plt->output_offset
6787 			    + ent->plt.offset);
7095   for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7096     if (ent->plt.offset != (bfd_vma) -1)
7105 	      reloc_index = ent->plt.offset / 4;
7108 		reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7122 		/* The first three entries in .got.plt are reserved.  */
7129 		/* Fill in the .plt on VxWorks.  */
7137 				htab->plt->contents + ent->plt.offset + 0);
7140 				htab->plt->contents + ent->plt.offset + 4);
7154 				htab->plt->contents + ent->plt.offset + 0);
7157 				htab->plt->contents + ent->plt.offset + 4);
7161 			    htab->plt->contents + ent->plt.offset + 8);
7163 			    htab->plt->contents + ent->plt.offset + 12);
7167 		   start of the .rela.plt section.  The value is stored in the
7173 			    htab->plt->contents + ent->plt.offset + 16);
7182 			     | (-(ent->plt.offset + 20) & 0x03fffffc)),
7183 			    htab->plt->contents + ent->plt.offset + 20);
7185 			    htab->plt->contents + ent->plt.offset + 24);
7187 			    htab->plt->contents + ent->plt.offset + 28);
7192 		bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7193 					 + htab->plt->output_offset
7194 					 + ent->plt.offset + 16),
7199 		    /* Fill in a couple of entries in .rela.plt.unloaded.  */
7206 		    rela.r_offset = (htab->plt->output_section->vma
7207 				     + htab->plt->output_offset
7208 				     + ent->plt.offset + 2);
7216 		    rela.r_offset = (htab->plt->output_section->vma
7217 				     + htab->plt->output_offset
7218 				     + ent->plt.offset + 6);
7226 		       PLT slot.  Point it at the middle of the .plt entry.  */
7232 		    rela.r_addend = ent->plt.offset + 16;
7248 		rela.r_offset = (htab->plt->output_section->vma
7249 				 + htab->plt->output_offset
7250 				 + ent->plt.offset);
7253 		    /* We don't need to fill in the .plt.  The ppc dynamic
7258 		    bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7262 				htab->plt->contents + ent->plt.offset);
7266 	    /* Fill in the entry in the .rela.plt section.  */
7277 		   the .plt section.  Leave the value alone.  */
7291 	    bfd_vma plt;
7294 	    plt = (ent->plt.offset
7295 		   + htab->plt->output_section->vma
7296 		   + htab->plt->output_offset);
7312 		plt -= got;
7314 		if (plt + 0x8000 < 0x10000)
7316 		    bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7327 		    bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7329 		    bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7339 		bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7341 		bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7440     splt = bfd_get_section_by_name (dynobj, ".plt");
7454       BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7471 		s = htab->plt;
7565 	  rela.r_offset = (htab->plt->output_section->vma
7566 			   + htab->plt->output_offset
7574 	  rela.r_offset = (htab->plt->output_section->vma
7575 			   + htab->plt->output_offset
7618        *   addis 11,30,(plt+(i-1)*4-got)@ha
7619        *   lwz 11,(plt+(i-1)*4-got)@l(11)
7623        * # A table of branches, one for each plt entry.
7624        * # The idea is that the plt call stub loads ctr (and r11) with these
7625        * # addresses, so (r11 - res_0) gives the plt index * 4.
7695       /* Build the branch table, one for each plt entry (less one),
7864 /* VxWorks uses the elf default section flags for .plt.  */
7871   if (strcmp (sec->name, ".plt") == 0)