sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 1256 insertions, 0 deletions

diff --git a/support/sdbinutils/bfd/elf32-ft32.c b/support/sdbinutils/bfd/elf32-ft32.c
new file mode 100644
index 0000000..86157d8
--- /dev/null
+++ b/support/sdbinutils/bfd/elf32-ft32.c
@@ -0,0 +1,1256 @@
+/* ft32-specific support for 32-bit ELF.
+   Copyright (C) 2013-2018 Free Software Foundation, Inc.
+
+   Copied from elf32-moxie.c which is..
+   Copyright (C) 2009-2018 Free Software Foundation, Inc.
+   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 3 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., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+#include "elf/ft32.h"
+#include "opcode/ft32.h"
+
+static bfd_boolean debug_relax = FALSE;
+
+static bfd_reloc_status_type
+bfd_elf_ft32_diff_reloc (bfd *, arelent *, asymbol *, void *,
+			asection *, bfd *, char **);
+
+static reloc_howto_type ft32_elf_howto_table [] =
+{
+  /* This reloc does nothing.  */
+  HOWTO (R_FT32_NONE,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_NONE",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  /* A 32 bit absolute relocation.  */
+
+  HOWTO (R_FT32_32,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_32",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0xffffffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_FT32_16,		/* type */
+	 0,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 16,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_16",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x0000ffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_FT32_8,		/* type */
+	 0,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 8,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_signed, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_8",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x000000ff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_FT32_10,		/* type */
+	 0,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 10,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 4,			/* bitpos */
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_10",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x00003ff0,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_FT32_20,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 20,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_20",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x000fffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_FT32_17,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 17,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_17",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x0001ffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_FT32_18,		/* type */
+	 2,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 18,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_18",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x0003ffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_FT32_RELAX,		/* type */
+	 0,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 10,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 4,			/* bitpos */
+	 complain_overflow_signed, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_RELAX",	/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x00000000,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
+  HOWTO (R_FT32_SC0,		/* type */
+	 0,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 10,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 4,			/* bitpos */
+	 complain_overflow_signed, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_SC0",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x00000000,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+  HOWTO (R_FT32_SC1,		/* type */
+	 2,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 22,			/* bitsize */
+	 TRUE,			/* pc_relative */
+	 7,			/* bitpos */
+	 complain_overflow_dont, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_SC1",		/* name */
+	 TRUE,			/* partial_inplace */
+	 0x07ffff80,		/* src_mask */
+	 0x07ffff80,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+  HOWTO (R_FT32_15,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 15,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont, /* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_FT32_15",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0x00000000,		/* src_mask */
+	 0x00007fff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+  HOWTO (R_FT32_DIFF32,		/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 32,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont, /* complain_on_overflow */
+	 bfd_elf_ft32_diff_reloc, /* special_function */
+	 "R_FT32_DIFF32",	/* name */
+	 FALSE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xffffffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+};
+
+
+/* Map BFD reloc types to FT32 ELF reloc types.  */
+
+struct ft32_reloc_map
+{
+  bfd_reloc_code_real_type bfd_reloc_val;
+  unsigned int ft32_reloc_val;
+};
+
+static const struct ft32_reloc_map ft32_reloc_map [] =
+{
+  { BFD_RELOC_NONE,		R_FT32_NONE },
+  { BFD_RELOC_32,		R_FT32_32 },
+  { BFD_RELOC_16,		R_FT32_16 },
+  { BFD_RELOC_8,		R_FT32_8 },
+  { BFD_RELOC_FT32_10,		R_FT32_10 },
+  { BFD_RELOC_FT32_20,		R_FT32_20 },
+  { BFD_RELOC_FT32_17,		R_FT32_17 },
+  { BFD_RELOC_FT32_18,		R_FT32_18 },
+  { BFD_RELOC_FT32_RELAX,	R_FT32_RELAX },
+  { BFD_RELOC_FT32_SC0,		R_FT32_SC0 },
+  { BFD_RELOC_FT32_SC1,		R_FT32_SC1 },
+  { BFD_RELOC_FT32_15,		R_FT32_15 },
+  { BFD_RELOC_FT32_DIFF32,	R_FT32_DIFF32 },
+};
+
+/* Perform a diff relocation. Nothing to do, as the difference value is
+   already written into the section's contents. */
+
+static bfd_reloc_status_type
+bfd_elf_ft32_diff_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+		      arelent *reloc_entry ATTRIBUTE_UNUSED,
+	      asymbol *symbol ATTRIBUTE_UNUSED,
+	      void *data ATTRIBUTE_UNUSED,
+	      asection *input_section ATTRIBUTE_UNUSED,
+	      bfd *output_bfd ATTRIBUTE_UNUSED,
+	      char **error_message ATTRIBUTE_UNUSED)
+{
+  return bfd_reloc_ok;
+}
+
+static reloc_howto_type *
+ft32_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+			 bfd_reloc_code_real_type code)
+{
+  unsigned int i;
+
+  for (i = sizeof (ft32_reloc_map) / sizeof (ft32_reloc_map[0]);
+       --i;)
+    if (ft32_reloc_map [i].bfd_reloc_val == code)
+      return & ft32_elf_howto_table [ft32_reloc_map[i].ft32_reloc_val];
+
+  return NULL;
+}
+
+static reloc_howto_type *
+ft32_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
+{
+  unsigned int i;
+
+  for (i = 0;
+       i < sizeof (ft32_elf_howto_table) / sizeof (ft32_elf_howto_table[0]);
+       i++)
+    if (ft32_elf_howto_table[i].name != NULL
+	&& strcasecmp (ft32_elf_howto_table[i].name, r_name) == 0)
+      return &ft32_elf_howto_table[i];
+
+  return NULL;
+}
+
+/* Set the howto pointer for an FT32 ELF reloc.  */
+
+static void
+ft32_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
+			  arelent *cache_ptr,
+			  Elf_Internal_Rela *dst)
+{
+  unsigned int r_type;
+
+  r_type = ELF32_R_TYPE (dst->r_info);
+  BFD_ASSERT (r_type < (unsigned int) R_FT32_max);
+  cache_ptr->howto = & ft32_elf_howto_table [r_type];
+}
+
+/* Relocate an FT32 ELF section.
+
+   The RELOCATE_SECTION function is called by the new ELF backend linker
+   to handle the relocations for a section.
+
+   The relocs are always passed as Rela structures; if the section
+   actually uses Rel structures, the r_addend field will always be
+   zero.
+
+   This function is responsible for adjusting the section contents as
+   necessary, and (if using Rela relocs and generating a relocatable
+   output file) adjusting the reloc addend as necessary.
+
+   This function does not have to worry about setting the reloc
+   address or the reloc symbol index.
+
+   LOCAL_SYMS is a pointer to the swapped in local symbols.
+
+   LOCAL_SECTIONS is an array giving the section in the input file
+   corresponding to the st_shndx field of each local symbol.
+
+   The global hash table entry for the global symbols can be found
+   via elf_sym_hashes (input_bfd).
+
+   When generating relocatable output, this function must handle
+   STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
+   going to be the section symbol corresponding to the output
+   section, which means that the addend must be adjusted
+   accordingly.  */
+
+static bfd_boolean
+ft32_elf_relocate_section (bfd *output_bfd,
+			    struct bfd_link_info *info,
+			    bfd *input_bfd,
+			    asection *input_section,
+			    bfd_byte *contents,
+			    Elf_Internal_Rela *relocs,
+			    Elf_Internal_Sym *local_syms,
+			    asection **local_sections)
+{
+  Elf_Internal_Shdr *symtab_hdr;
+  struct elf_link_hash_entry **sym_hashes;
+  Elf_Internal_Rela *rel;
+  Elf_Internal_Rela *relend;
+
+  symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
+  sym_hashes = elf_sym_hashes (input_bfd);
+  relend     = relocs + input_section->reloc_count;
+
+  for (rel = relocs; rel < relend; rel ++)
+    {
+      reloc_howto_type *howto;
+      unsigned long r_symndx;
+      Elf_Internal_Sym *sym;
+      asection *sec;
+      struct elf_link_hash_entry *h;
+      bfd_vma relocation;
+      bfd_reloc_status_type r;
+      const char *name;
+      int r_type;
+
+      r_type = ELF32_R_TYPE (rel->r_info);
+      r_symndx = ELF32_R_SYM (rel->r_info);
+      howto  = ft32_elf_howto_table + r_type;
+      h      = NULL;
+      sym    = NULL;
+      sec    = NULL;
+
+      if (r_symndx < symtab_hdr->sh_info)
+	{
+	  sym = local_syms + r_symndx;
+	  sec = local_sections [r_symndx];
+	  relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+
+	  name = bfd_elf_string_from_elf_section
+	    (input_bfd, symtab_hdr->sh_link, sym->st_name);
+	  name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
+	}
+      else
+	{
+	  bfd_boolean unresolved_reloc, warned, ignored;
+
+	  RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+				   r_symndx, symtab_hdr, sym_hashes,
+				   h, sec, relocation,
+				   unresolved_reloc, warned, ignored);
+
+	  name = h->root.root.string;
+	}
+
+      if (sec != NULL && discarded_section (sec))
+	RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+					 rel, 1, relend, howto, 0, contents);
+
+      if (bfd_link_relocatable (info))
+	continue;
+
+      switch (howto->type)
+	{
+	  case R_FT32_SC0:
+	    {
+	      unsigned int insn;
+	      int offset;
+	      unsigned int code15[2];
+
+	      insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+	      ft32_split_shortcode (insn, code15);
+
+	      offset = (int)relocation;
+	      offset += (int)(rel->r_addend - rel->r_offset);
+	      offset -= (input_section->output_section->vma +
+			 input_section->output_offset);
+	      if ((offset < -1024) || (offset >= 1024))
+		{
+		  r = bfd_reloc_outofrange;
+		  break;
+		}
+	      code15[0] |= ((offset / 4) & 511);
+	      insn = ft32_merge_shortcode (code15);
+	      bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+	    }
+	    r = bfd_reloc_ok;
+	    break;
+
+	  case R_FT32_SC1:
+	    {
+	      unsigned int insn;
+	      int offset;
+	      unsigned int code15[2];
+
+	      insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+	      ft32_split_shortcode (insn, code15);
+
+	      offset = (int)relocation;
+	      offset += (int)(rel->r_addend - rel->r_offset);
+	      offset -= (input_section->output_section->vma +
+			 input_section->output_offset);
+	      if ((offset < -1024) || (offset >= 1024))
+		{
+		  r = bfd_reloc_outofrange;
+		  break;
+		}
+	      code15[1] |= ((offset / 4) & 511);
+	      insn = ft32_merge_shortcode (code15);
+	      bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+	    }
+	    r = bfd_reloc_ok;
+	    break;
+
+	  case R_FT32_DIFF32:
+	    r = bfd_reloc_ok;
+	    break;
+
+	  default:
+	    r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+					  contents, rel->r_offset,
+					  relocation, rel->r_addend);
+	    break;
+	}
+
+      if (r != bfd_reloc_ok)
+	{
+	  const char * msg = NULL;
+
+	  switch (r)
+	    {
+	    case bfd_reloc_overflow:
+	      (*info->callbacks->reloc_overflow)
+		(info, (h ? &h->root : NULL), name, howto->name,
+		 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
+	      break;
+
+	    case bfd_reloc_undefined:
+	      (*info->callbacks->undefined_symbol)
+		(info, name, input_bfd, input_section, rel->r_offset, TRUE);
+	      break;
+
+	    case bfd_reloc_outofrange:
+	      msg = _("internal error: out of range error");
+	      break;
+
+	    case bfd_reloc_notsupported:
+	      msg = _("internal error: unsupported relocation error");
+	      break;
+
+	    case bfd_reloc_dangerous:
+	      msg = _("internal error: dangerous relocation");
+	      break;
+
+	    default:
+	      msg = _("internal error: unknown error");
+	      break;
+	    }
+
+	  if (msg)
+	    (*info->callbacks->warning) (info, msg, name, input_bfd,
+					 input_section, rel->r_offset);
+	}
+    }
+
+  return TRUE;
+}
+
+/* Relaxation.  */
+
+static bfd_boolean
+ft32_reloc_shortable
+    (bfd *		    abfd,
+     asection *		    sec,
+     Elf_Internal_Sym *	    isymbuf ATTRIBUTE_UNUSED,
+     bfd_byte *		    contents,
+     bfd_vma		    pc ATTRIBUTE_UNUSED,
+     Elf_Internal_Rela *    irel,
+     unsigned int *	    sc)
+{
+  Elf_Internal_Shdr *symtab_hdr ATTRIBUTE_UNUSED;
+  bfd_vma symval;
+
+  enum elf_ft32_reloc_type r_type;
+  reloc_howto_type *howto = NULL;
+  unsigned int insn;
+  int offset;
+  bfd_vma dot, value;
+
+  r_type = ELF32_R_TYPE (irel->r_info);
+  howto = &ft32_elf_howto_table [r_type];
+
+  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+  /* Get the value of the symbol referred to by the reloc.  */
+  if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
+    {
+      /* A local symbol.  */
+      Elf_Internal_Sym *isym;
+      asection *sym_sec;
+
+      isym = isymbuf + ELF32_R_SYM (irel->r_info);
+      sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+      symval = isym->st_value;
+      /* If the reloc is absolute, it will not have
+	 a symbol or section associated with it.  */
+      if (sym_sec)
+	symval += sym_sec->output_section->vma
+	  + sym_sec->output_offset;
+    }
+  else
+    {
+      unsigned long indx;
+      struct elf_link_hash_entry *h;
+
+      /* An external symbol.  */
+      indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
+      h = elf_sym_hashes (abfd)[indx];
+      BFD_ASSERT (h != NULL);
+      if (h->root.type != bfd_link_hash_defined
+	  && h->root.type != bfd_link_hash_defweak)
+	/* This appears to be a reference to an undefined
+	   symbol.  Just ignore it--it will be caught by the
+	   regular reloc processing.  */
+	return FALSE;
+
+      symval = (h->root.u.def.value
+		+ h->root.u.def.section->output_section->vma
+		+ h->root.u.def.section->output_offset);
+    }
+
+  switch (r_type)
+    {
+      case R_FT32_8:
+      case R_FT32_10:
+      case R_FT32_16:
+      case R_FT32_20:
+      case R_FT32_RELAX:
+	if (symval != 0)
+	  return FALSE;
+	insn = bfd_get_32 (abfd, contents + irel->r_offset);
+	insn |= ((symval + irel->r_addend) << howto->bitpos) & howto->dst_mask;
+	return ft32_shortcode (insn, sc);
+
+      case R_FT32_18:
+	insn = bfd_get_32 (abfd, contents + irel->r_offset);
+	/* Get the address of this instruction.  */
+	dot = (sec->output_section->vma
+	       + sec->output_offset + irel->r_offset);
+	value = symval + irel->r_addend;
+	offset = (value - dot) / 4;
+
+	if ((dot > 0x8c) && (-256 <= offset) && (offset < 256))
+	  {
+	    switch (insn)
+	      {
+		case 0x00200000: *sc = (3 << 13) | (0  << 9); return TRUE;
+		case 0x00280000: *sc = (3 << 13) | (1  << 9); return TRUE;
+		case 0x00600000: *sc = (3 << 13) | (2  << 9); return TRUE;
+		case 0x00680000: *sc = (3 << 13) | (3  << 9); return TRUE;
+		case 0x00a00000: *sc = (3 << 13) | (4  << 9); return TRUE;
+		case 0x00a80000: *sc = (3 << 13) | (5  << 9); return TRUE;
+		case 0x00e00000: *sc = (3 << 13) | (6  << 9); return TRUE;
+		case 0x00e80000: *sc = (3 << 13) | (7  << 9); return TRUE;
+		case 0x01200000: *sc = (3 << 13) | (8  << 9); return TRUE;
+		case 0x01280000: *sc = (3 << 13) | (9  << 9); return TRUE;
+		case 0x01600000: *sc = (3 << 13) | (10 << 9); return TRUE;
+		case 0x01680000: *sc = (3 << 13) | (11 << 9); return TRUE;
+		case 0x01a00000: *sc = (3 << 13) | (12 << 9); return TRUE;
+		case 0x01a80000: *sc = (3 << 13) | (13 << 9); return TRUE;
+
+		case 0x00300000: *sc = (3 << 13) | (14 << 9); return TRUE;
+		case 0x00340000: *sc = (3 << 13) | (15 << 9); return TRUE;
+
+		default:
+		  break;
+	      }
+	  }
+	break;
+
+      default:
+	break;
+    }
+  return FALSE;
+}
+
+/* Returns whether the relocation type passed is a diff reloc.  */
+
+static bfd_boolean
+elf32_ft32_is_diff_reloc (Elf_Internal_Rela *irel)
+{
+  return (ELF32_R_TYPE (irel->r_info) == R_FT32_DIFF32);
+}
+
+/* Reduce the diff value written in the section by count if the shrinked
+   insn address happens to fall between the two symbols for which this
+   diff reloc was emitted.  */
+
+static bfd_boolean
+elf32_ft32_adjust_diff_reloc_value (bfd *abfd,
+				   struct bfd_section *isec,
+				   Elf_Internal_Rela *irel,
+				   bfd_vma symval,
+				   bfd_vma shrinked_insn_address,
+				   int count)
+{
+  unsigned char * reloc_contents = NULL;
+  unsigned char * isec_contents = elf_section_data (isec)->this_hdr.contents;
+  bfd_signed_vma x = 0;
+  bfd_vma sym2_address;
+  bfd_vma sym1_address;
+  bfd_vma start_address;
+  bfd_vma end_address;
+
+
+  if (isec_contents == NULL)
+    {
+      if (! bfd_malloc_and_get_section (abfd, isec, &isec_contents))
+	return FALSE;
+
+      elf_section_data (isec)->this_hdr.contents = isec_contents;
+    }
+
+  reloc_contents = isec_contents + irel->r_offset;
+
+  /* Read value written in object file.  */
+  switch (ELF32_R_TYPE (irel->r_info))
+    {
+    case R_FT32_DIFF32:
+      x = bfd_get_signed_32 (abfd, reloc_contents);
+      break;
+
+    default:
+      return FALSE;
+    }
+
+  /* For a diff reloc sym1 - sym2 the diff at assembly time (x) is written
+     into the object file at the reloc offset. sym2's logical value is
+     symval (<start_of_section>) + reloc addend. Compute the start and end
+     addresses and check if the shrinked insn falls between sym1 and sym2.  */
+  sym2_address = symval + irel->r_addend;
+  sym1_address = sym2_address - x;
+
+  /* Don't assume sym2 is bigger than sym1 - the difference
+     could be negative. Compute start and end addresses, and
+     use those to see if they span shrinked_insn_address.  */
+  start_address = sym1_address < sym2_address ? sym1_address : sym2_address;
+  end_address = sym1_address > sym2_address ? sym1_address : sym2_address;
+
+  if (shrinked_insn_address >= start_address
+      && shrinked_insn_address < end_address)
+    {
+      /* Reduce the diff value by count bytes and write it back into section
+	 contents.  */
+      bfd_signed_vma new_diff = x < 0 ? x + count : x - count;
+
+      if (sym2_address > shrinked_insn_address)
+	irel->r_addend -= count;
+
+      switch (ELF32_R_TYPE (irel->r_info))
+	{
+	case R_FT32_DIFF32:
+	  bfd_put_signed_32 (abfd, new_diff & 0xFFFFFFFF, reloc_contents);
+	  break;
+
+	default:
+	  return FALSE;
+	}
+    }
+
+  return TRUE;
+}
+
+static bfd_boolean
+elf32_ft32_adjust_reloc_if_spans_insn (bfd *abfd,
+				      asection *isec,
+				      Elf_Internal_Rela *irel,  bfd_vma symval,
+				      bfd_vma shrinked_insn_address,
+				      bfd_vma shrink_boundary,
+				      int count)
+{
+
+  if (elf32_ft32_is_diff_reloc (irel))
+    {
+      if (!elf32_ft32_adjust_diff_reloc_value (abfd, isec, irel,
+					       symval,
+					       shrinked_insn_address,
+					       count))
+	return FALSE;
+    }
+  else
+    {
+      bfd_vma reloc_value = symval + irel->r_addend;
+      bfd_boolean addend_within_shrink_boundary =
+	(reloc_value <= shrink_boundary);
+      bfd_boolean reloc_spans_insn =
+	(symval <= shrinked_insn_address
+	 && reloc_value > shrinked_insn_address
+	 && addend_within_shrink_boundary);
+
+      if (! reloc_spans_insn)
+	return TRUE;
+
+      irel->r_addend -= count;
+
+      if (debug_relax)
+	printf ("Relocation's addend needed to be fixed \n");
+    }
+  return TRUE;
+}
+
+/* Delete some bytes from a section while relaxing.  */
+
+static bfd_boolean
+elf32_ft32_relax_delete_bytes (struct bfd_link_info *link_info, bfd * abfd,
+			       asection * sec, bfd_vma addr, int count)
+{
+  Elf_Internal_Shdr *symtab_hdr;
+  unsigned int sec_shndx;
+  bfd_byte *contents;
+  Elf_Internal_Rela *irel, *irelend;
+  bfd_vma toaddr;
+  Elf_Internal_Sym *isym;
+  Elf_Internal_Sym *isymend;
+  struct elf_link_hash_entry **sym_hashes;
+  struct elf_link_hash_entry **end_hashes;
+  struct elf_link_hash_entry **start_hashes;
+  unsigned int symcount;
+  Elf_Internal_Sym *isymbuf = NULL;
+
+  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+  sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+
+  contents = elf_section_data (sec)->this_hdr.contents;
+
+  toaddr = sec->size;
+
+  irel = elf_section_data (sec)->relocs;
+  irelend = irel + sec->reloc_count;
+
+  /* Actually delete the bytes.  */
+  memmove (contents + addr, contents + addr + count,
+	   (size_t) (toaddr - addr - count));
+  sec->size -= count;
+
+  /* Adjust all the relocs.  */
+  for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
+    /* Get the new reloc address.  */
+    if ((irel->r_offset > addr && irel->r_offset < toaddr))
+      irel->r_offset -= count;
+
+  /* The reloc's own addresses are now ok. However, we need to readjust
+     the reloc's addend, i.e. the reloc's value if two conditions are met:
+     1.) the reloc is relative to a symbol in this section that
+     is located in front of the shrinked instruction
+     2.) symbol plus addend end up behind the shrinked instruction.
+
+     The most common case where this happens are relocs relative to
+     the section-start symbol.
+
+     This step needs to be done for all of the sections of the bfd.  */
+  {
+    struct bfd_section *isec;
+
+    for (isec = abfd->sections; isec; isec = isec->next)
+      {
+	bfd_vma symval;
+	bfd_vma shrinked_insn_address;
+
+	if (isec->reloc_count == 0)
+	  continue;
+
+	shrinked_insn_address = (sec->output_section->vma
+				 + sec->output_offset + addr - count);
+
+	irel = elf_section_data (isec)->relocs;
+	/* PR 12161: Read in the relocs for this section if necessary.  */
+	if (irel == NULL)
+	  irel = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, TRUE);
+
+	for (irelend = irel + isec->reloc_count; irel < irelend; irel++)
+	  {
+	    /* Read this BFD's local symbols if we haven't done
+	       so already.  */
+	    if (isymbuf == NULL && symtab_hdr->sh_info != 0)
+	      {
+		isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+		if (isymbuf == NULL)
+		  isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+						  symtab_hdr->sh_info, 0,
+						  NULL, NULL, NULL);
+		if (isymbuf == NULL)
+		  return FALSE;
+	      }
+
+	    /* Get the value of the symbol referred to by the reloc.  */
+	    if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
+	      {
+		/* A local symbol.  */
+		asection *sym_sec;
+
+		isym = isymbuf + ELF32_R_SYM (irel->r_info);
+		sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+		symval = isym->st_value;
+		/* If the reloc is absolute, it will not have
+		   a symbol or section associated with it.  */
+		if (sym_sec == sec)
+		  {
+		    symval += sym_sec->output_section->vma
+		      + sym_sec->output_offset;
+
+		    if (debug_relax)
+		      printf ("Checking if the relocation's "
+			      "addend needs corrections.\n"
+			      "Address of anchor symbol: 0x%x \n"
+			      "Address of relocation target: 0x%x \n"
+			      "Address of relaxed insn: 0x%x \n",
+			      (unsigned int) symval,
+			      (unsigned int) (symval + irel->r_addend),
+			      (unsigned int) shrinked_insn_address);
+
+		    if (symval <= shrinked_insn_address
+			&& (symval + irel->r_addend) > shrinked_insn_address)
+		      {
+			/* If there is an alignment boundary, we only need to
+			   adjust addends that end up below the boundary. */
+			bfd_vma shrink_boundary = (toaddr
+						   + sec->output_section->vma
+						   + sec->output_offset);
+
+			if (debug_relax)
+			  printf
+			    ("Relocation's addend needed to be fixed \n");
+
+			if (!elf32_ft32_adjust_reloc_if_spans_insn (abfd, isec,
+								    irel, symval,
+								    shrinked_insn_address,
+								    shrink_boundary,
+								    count))
+			  return FALSE;
+		      }
+		  }
+		/* else reference symbol is absolute. No adjustment needed. */
+	      }
+	    /* else...Reference symbol is extern.  No need for adjusting
+	       the addend.  */
+	  }
+      }
+  }
+
+  /* Adjust the local symbols defined in this section.  */
+  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+  isym = (Elf_Internal_Sym *) symtab_hdr->contents;
+  if (isym)
+    {
+      for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
+	{
+	  if (isym->st_shndx == sec_shndx
+	      && isym->st_value > addr && isym->st_value < toaddr)
+	    isym->st_value -= count;
+	}
+    }
+
+  /* Now adjust the global symbols defined in this section.  */
+  symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+	      - symtab_hdr->sh_info);
+  sym_hashes = start_hashes = elf_sym_hashes (abfd);
+  end_hashes = sym_hashes + symcount;
+
+  for (; sym_hashes < end_hashes; sym_hashes++)
+    {
+      struct elf_link_hash_entry *sym_hash = *sym_hashes;
+
+      /* The '--wrap SYMBOL' option is causing a pain when the object file,
+	 containing the definition of __wrap_SYMBOL, includes a direct
+	 call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference
+	 the same symbol (which is __wrap_SYMBOL), but still exist as two
+	 different symbols in 'sym_hashes', we don't want to adjust
+	 the global symbol __wrap_SYMBOL twice.
+	 This check is only relevant when symbols are being wrapped.  */
+      if (link_info->wrap_hash != NULL)
+	{
+	  struct elf_link_hash_entry **cur_sym_hashes;
+
+	  /* Loop only over the symbols whom been already checked.  */
+	  for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes;
+	       cur_sym_hashes++)
+	    /* If the current symbol is identical to 'sym_hash', that means
+	       the symbol was already adjusted (or at least checked).  */
+	    if (*cur_sym_hashes == sym_hash)
+	      break;
+
+	  /* Don't adjust the symbol again.  */
+	  if (cur_sym_hashes < sym_hashes)
+	    continue;
+	}
+
+      if ((sym_hash->root.type == bfd_link_hash_defined
+	   || sym_hash->root.type == bfd_link_hash_defweak)
+	  && sym_hash->root.u.def.section == sec
+	  && sym_hash->root.u.def.value > addr
+	  && sym_hash->root.u.def.value < toaddr)
+	sym_hash->root.u.def.value -= count;
+    }
+
+  return TRUE;
+}
+
+/* Return TRUE if LOC can be a target of a branch, jump or call.  */
+
+static bfd_boolean
+elf32_ft32_relax_is_branch_target (struct bfd_link_info *link_info,
+				   bfd * abfd, asection * sec,
+				   bfd_vma loc)
+{
+  Elf_Internal_Shdr *symtab_hdr;
+  Elf_Internal_Rela *irel, *irelend;
+  Elf_Internal_Sym *isym;
+  Elf_Internal_Sym *isymbuf = NULL;
+  bfd_vma symval;
+  struct bfd_section *isec;
+
+  struct elf_link_hash_entry **sym_hashes;
+  struct elf_link_hash_entry **end_hashes;
+  struct elf_link_hash_entry **start_hashes;
+  unsigned int symcount;
+
+  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+  /* Now we check for relocations pointing to ret.  */
+  for (isec = abfd->sections; isec; isec = isec->next)
+    {
+      irel = elf_section_data (isec)->relocs;
+      if (irel == NULL)
+	irel = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, TRUE);
+
+      irelend = irel + isec->reloc_count;
+
+      for (; irel < irelend; irel++)
+	{
+	  /* Read this BFD's local symbols if we haven't done
+	     so already.  */
+	  if (isymbuf == NULL && symtab_hdr->sh_info != 0)
+	    {
+	      isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+	      if (isymbuf == NULL)
+		isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+						symtab_hdr->sh_info, 0,
+						NULL, NULL, NULL);
+	      if (isymbuf == NULL)
+		return FALSE;
+	    }
+
+	  /* Get the value of the symbol referred to by the reloc.  */
+	  if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
+	    {
+	      /* A local symbol.  */
+	      asection *sym_sec;
+
+	      isym = isymbuf + ELF32_R_SYM (irel->r_info);
+	      sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+	      symval = isym->st_value;
+	      /* If the reloc is absolute, it will not have
+		 a symbol or section associated with it.  */
+	      if (sym_sec == sec)
+		{
+		  symval += sym_sec->output_section->vma
+			    + sym_sec->output_offset;
+
+		  if (debug_relax)
+		    printf ("0x%x: Address of anchor symbol: 0x%x "
+			    "Address of relocation target: 0x%x \n",
+			    (unsigned int) irel->r_offset,
+			    (unsigned int) symval,
+			    (unsigned int) (symval + irel->r_addend));
+		  if ((irel->r_addend) == loc)
+		    return TRUE;
+		}
+	    }
+	}
+    }
+
+  symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+	       - symtab_hdr->sh_info);
+  sym_hashes = start_hashes = elf_sym_hashes (abfd);
+  end_hashes = sym_hashes + symcount;
+
+  for (; sym_hashes < end_hashes; sym_hashes++)
+    {
+      struct elf_link_hash_entry *sym_hash = *sym_hashes;
+
+      /* The '--wrap SYMBOL' option is causing a pain when the object file,
+	 containing the definition of __wrap_SYMBOL, includes a direct
+	 call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference
+	 the same symbol (which is __wrap_SYMBOL), but still exist as two
+	 different symbols in 'sym_hashes', we don't want to adjust
+	 the global symbol __wrap_SYMBOL twice.
+	 This check is only relevant when symbols are being wrapped.  */
+      if (link_info->wrap_hash != NULL)
+	{
+	  struct elf_link_hash_entry **cur_sym_hashes;
+
+	  /* Loop only over the symbols whom been already checked.  */
+	  for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes;
+	       cur_sym_hashes++)
+	    /* If the current symbol is identical to 'sym_hash', that means
+	       the symbol was already adjusted (or at least checked).  */
+	    if (*cur_sym_hashes == sym_hash)
+	      break;
+
+	  /* Don't adjust the symbol again.  */
+	  if (cur_sym_hashes < sym_hashes)
+	    continue;
+	}
+
+      if ((sym_hash->root.type == bfd_link_hash_defined
+	  || sym_hash->root.type == bfd_link_hash_defweak)
+	  && sym_hash->root.u.def.section == sec
+	  && sym_hash->root.u.def.value == loc)
+	return TRUE;
+    }
+
+  return FALSE;
+}
+
+static bfd_boolean
+ft32_elf_relax_section
+    (bfd *		    abfd,
+     asection *		    sec,
+     struct bfd_link_info * link_info,
+     bfd_boolean *	    again)
+{
+  Elf_Internal_Rela * free_relocs = NULL;
+  Elf_Internal_Rela * internal_relocs;
+  Elf_Internal_Rela * irelend;
+  Elf_Internal_Rela * irel;
+  bfd_byte *	      contents = NULL;
+  Elf_Internal_Shdr * symtab_hdr;
+  Elf_Internal_Sym *  isymbuf = NULL;
+
+  /* Assume nothing changes.  */
+  *again = FALSE;
+
+  /* We don't have to do anything for a relocatable link, if
+     this section does not have relocs, or if this is not a
+     code section.  */
+  if (bfd_link_relocatable (link_info)
+      || (sec->flags & SEC_RELOC) == 0
+      || sec->reloc_count == 0
+      || (sec->flags & SEC_CODE) == 0)
+    return TRUE;
+
+  /* Get the section contents.  */
+  if (elf_section_data (sec)->this_hdr.contents != NULL)
+    contents = elf_section_data (sec)->this_hdr.contents;
+  /* Go get them off disk.  */
+  else
+    {
+      if (! bfd_malloc_and_get_section (abfd, sec, &contents))
+	goto error_return;
+      elf_section_data (sec)->this_hdr.contents = contents;
+    }
+
+  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+  /* Read this BFD's local symbols if we haven't done so already.  */
+  if (isymbuf == NULL && symtab_hdr->sh_info != 0)
+    {
+      isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+      if (isymbuf == NULL)
+	isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+					symtab_hdr->sh_info, 0,
+					NULL, NULL, NULL);
+      if (isymbuf == NULL)
+	goto error_return;
+      symtab_hdr->contents = (unsigned char *) isymbuf;
+    }
+
+  internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
+					       link_info->keep_memory);
+  if (internal_relocs == NULL)
+    goto error_return;
+  if (! link_info->keep_memory)
+    free_relocs = internal_relocs;
+
+  /* Walk through them looking for relaxing opportunities.  */
+  irelend = internal_relocs + sec->reloc_count;
+
+  /* Test every adjacent pair of relocs. If both have shortcodes,
+     fuse them and delete the relocs.  */
+  irel = internal_relocs;
+  while (irel < irelend - 1)
+    {
+      Elf_Internal_Rela * irel_next = irel + 1;
+      unsigned int sc0, sc1;
+      bfd_vma pc;
+
+      pc = irel->r_offset;
+
+      if (((pc + 4) == (irel_next->r_offset))
+	  && ft32_reloc_shortable (abfd, sec, isymbuf, contents, pc, irel,
+				   &sc0)
+	  && ft32_reloc_shortable (abfd, sec, isymbuf, contents, pc,
+				   irel_next, &sc1)
+	  && !elf32_ft32_relax_is_branch_target (link_info, abfd, sec,
+						 irel_next->r_offset))
+	{
+	  unsigned int code30 = (sc1 << 15) | sc0;
+	  unsigned int code27 = code30 >> 3;
+	  unsigned int code3 = code30 & 7;
+	  static const unsigned char pat3[] = {2, 3, 4, 5, 6, 9, 10, 14};
+	  unsigned int pattern = pat3[code3];
+	  unsigned int fused = (pattern << 27) | code27;
+
+	  /* Move second reloc to same place as first.  */
+	  irel_next->r_offset = irel->r_offset;
+
+	  /* Change both relocs to R_FT32_NONE.  */
+
+	  if (ELF32_R_TYPE (irel->r_info) == R_FT32_18)
+	    {
+	      irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+					   R_FT32_SC0);
+	    }
+	  else
+	    {
+	      irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+					   R_FT32_NONE);
+	    }
+
+	  if (ELF32_R_TYPE (irel_next->r_info) == R_FT32_18)
+	    {
+	      irel_next->r_info = ELF32_R_INFO (ELF32_R_SYM (irel_next->r_info),
+						R_FT32_SC1);
+	    }
+	  else
+	    {
+	      irel_next->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+						R_FT32_NONE);
+	    }
+
+	  /* Replace the first insn with the fused version.  */
+	  bfd_put_32 (abfd, fused, contents + irel->r_offset);
+
+	  /* Delete the second insn.  */
+	  if (!elf32_ft32_relax_delete_bytes (link_info, abfd, sec,
+					       irel->r_offset + 4, 4))
+	    goto error_return;
+
+	  /* That will change things, so, we should relax again.
+	     Note that this is not required, and it may be slow.  */
+	  *again = TRUE;
+
+	  irel += 2;
+	}
+      else
+	{
+	  irel += 1;
+	}
+    }
+
+  if (isymbuf != NULL
+      && symtab_hdr->contents != (unsigned char *) isymbuf)
+    {
+      if (! link_info->keep_memory)
+	free (isymbuf);
+      else
+       /* Cache the symbols for elf_link_input_bfd.  */
+       symtab_hdr->contents = (unsigned char *) isymbuf;
+    }
+
+  if (contents != NULL
+      && elf_section_data (sec)->this_hdr.contents != contents)
+    {
+      if (! link_info->keep_memory)
+	free (contents);
+      else
+       /* Cache the section contents for elf_link_input_bfd.  */
+       elf_section_data (sec)->this_hdr.contents = contents;
+
+    }
+
+  if (internal_relocs != NULL
+      && elf_section_data (sec)->relocs != internal_relocs)
+    free (internal_relocs);
+
+  return TRUE;
+
+ error_return:
+  if (free_relocs != NULL)
+    free (free_relocs);
+
+  return TRUE;
+}
+
+#define ELF_ARCH		bfd_arch_ft32
+#define ELF_MACHINE_CODE	EM_FT32
+#define ELF_MAXPAGESIZE		0x1
+
+#define TARGET_LITTLE_SYM       ft32_elf32_vec
+#define TARGET_LITTLE_NAME	"elf32-ft32"
+
+#define elf_info_to_howto_rel			NULL
+#define elf_info_to_howto			ft32_info_to_howto_rela
+#define elf_backend_relocate_section		ft32_elf_relocate_section
+
+#define elf_backend_can_gc_sections		1
+#define elf_backend_rela_normal			1
+
+#define bfd_elf32_bfd_reloc_type_lookup		ft32_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup		ft32_reloc_name_lookup
+
+#define bfd_elf32_bfd_relax_section		ft32_elf_relax_section
+
+#include "elf32-target.h"