* elf32-vax.c (elf_vax_relocate_section)

[deliverable/binutils-gdb.git] / bfd / elf32-m68hc1x.c

diff --git a/bfd/elf32-m68hc1x.c b/bfd/elf32-m68hc1x.c
index 2107486886834287677d13e8757547dd76a6abb5..65d17d99e9bf4860d4699e132435910c8e5b30fb 100644 (file)
--- a/bfd/elf32-m68hc1x.c
+++ b/bfd/elf32-m68hc1x.c
@@ -1,6 +1,6 @@
 /* Motorola 68HC11/HC12-specific support for 32-bit ELF
    Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-   2009, 2010  Free Software Foundation, Inc.
+   2009, 2010, 2011, 2012 Free Software Foundation, Inc.
    Contributed by Stephane Carrez (stcarrez@nerim.fr)
 
    This file is part of BFD, the Binary File Descriptor library.
@@ -20,8 +20,8 @@
    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
    MA 02110-1301, USA.  */
 
-#include "alloca-conf.h"
 #include "sysdep.h"
+#include "alloca-conf.h"
 #include "bfd.h"
 #include "bfdlink.h"
 #include "libbfd.h"
@@ -214,6 +214,20 @@ elf32_m68hc11_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
   return TRUE;
 }
 
+/* Merge non-visibility st_other attributes, STO_M68HC12_FAR and
+   STO_M68HC12_INTERRUPT.  */
+
+void
+elf32_m68hc11_merge_symbol_attribute (struct elf_link_hash_entry *h,
+                                     const Elf_Internal_Sym *isym,
+                                     bfd_boolean definition,
+                                     bfd_boolean dynamic ATTRIBUTE_UNUSED)
+{
+  if (definition)
+    h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
+               | ELF_ST_VISIBILITY (h->other));
+}
+
 /* External entry points for sizing and building linker stubs.  */
 
 /* Set up various things so that we can make a list of input sections
@@ -935,6 +949,7 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
       bfd_vma insn_page;
       bfd_boolean is_far = FALSE;
       struct elf_link_hash_entry *h;
+      bfd_vma val;
 
       r_symndx = ELF32_R_SYM (rel->r_info);
       r_type = ELF32_R_TYPE (rel->r_info);
@@ -970,16 +985,9 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
          is_far = (h && (h->other & STO_M68HC12_FAR));
        }
 
-      if (sec != NULL && elf_discarded_section (sec))
-       {
-         /* For relocs against symbols from removed linkonce sections,
-            or sections discarded by a linker script, we just want the
-            section contents zeroed.  Avoid any special processing.  */
-         _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
-         rel->r_info = 0;
-         rel->r_addend = 0;
-         continue;
-       }
+      if (sec != NULL && discarded_section (sec))
+       RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+                                        rel, 1, relend, howto, 0, contents);
 
       if (info->relocatable)
        {
@@ -1022,6 +1030,50 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
       phys_page = m68hc11_phys_page (pinfo, relocation + rel->r_addend);
       switch (r_type)
         {
+        case R_M68HC12_LO8XG:
+          /* This relocation is specific to XGATE IMM16 calls and will precede
+            a HI8. tc-m68hc11 only generates them in pairs.
+            Leave the relocation to the HI8XG step.  */
+          r = bfd_reloc_ok;
+          r_type = R_M68HC11_NONE;
+          break;
+
+        case R_M68HC12_HI8XG:
+          /* This relocation is specific to XGATE IMM16 calls and must follow
+             a LO8XG. Does not actually check that it was a LO8XG.
+            Adjusts high and low bytes.  */
+          relocation = phys_addr;
+          if ((elf_elfheader (input_bfd)->e_flags & E_M68HC11_XGATE_RAMOFFSET)
+             && (relocation >= 0x2000))
+           relocation += 0xc000; /* HARDCODED RAM offset for XGATE.  */
+
+          /* Fetch 16 bit value including low byte in previous insn.  */
+          val = (bfd_get_8 (input_bfd, (bfd_byte*) contents + rel->r_offset) << 8)
+           | bfd_get_8 (input_bfd, (bfd_byte*) contents + rel->r_offset - 2);
+
+          /* Add on value to preserve carry, then write zero to high byte.  */
+          relocation += val;
+
+          /* Write out top byte.  */
+          bfd_put_8 (input_bfd, (relocation >> 8) & 0xff,
+                    (bfd_byte*) contents + rel->r_offset);
+
+          /* Write out low byte to previous instruction.  */
+          bfd_put_8 (input_bfd, relocation & 0xff,
+                    (bfd_byte*) contents + rel->r_offset - 2);
+
+          /* Mark as relocation completed.  */
+          r = bfd_reloc_ok;
+          r_type = R_M68HC11_NONE;
+          break;
+
+        /* The HI8 and LO8 relocs are generated by %hi(expr) %lo(expr)
+           assembler directives. %hi does not support carry.  */
+        case R_M68HC11_HI8:
+        case R_M68HC11_LO8:
+          relocation = phys_addr;
+          break;
+
         case R_M68HC11_24:
           /* Reloc used by 68HC12 call instruction.  */
           bfd_put_16 (input_bfd, phys_addr,
@@ -1116,10 +1168,18 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
             relocation = phys_addr;
           break;
         }
+
       if (r_type != R_M68HC11_NONE)
-        r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+        {
+          if ((r_type == R_M68HC12_PCREL_9) || (r_type == R_M68HC12_PCREL_10))
+            r = _bfd_final_link_relocate (howto, input_bfd, input_section,
                                       contents, rel->r_offset,
-                                      relocation, rel->r_addend);
+                                      relocation - 2, rel->r_addend);
+          else
+            r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+                                          contents, rel->r_offset,
+                                          relocation, rel->r_addend);
+        }
 
       if (r != bfd_reloc_ok)
        {
@@ -1195,7 +1255,7 @@ _bfd_m68hc11_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
   flagword new_flags;
   bfd_boolean ok = TRUE;
 
-  /* Check if we have the same endianess */
+  /* Check if we have the same endianness */
   if (!_bfd_generic_verify_endian_match (ibfd, obfd))
     return FALSE;
 
@@ -1310,6 +1370,9 @@ _bfd_m68hc11_elf_print_private_bfd_data (bfd *abfd, void *ptr)
   else
     fprintf (file, _(" [memory=flat]"));
 
+  if (elf_elfheader (abfd)->e_flags & E_M68HC11_XGATE_RAMOFFSET)
+    fprintf (file, _(" [XGATE RAM offsetting]"));
+
   fputc ('\n', file);
 
   return TRUE;