Adds support for generating notes in V850 binaries.

bfd	* elf32-v850.c (v850_set_note): New function.  Creates a Renesas
	style note entry.
	(v850_elf_make_note_section): New function.  Creates a note
	section.
	(v850_elf_create_sections): New function.  Create a note section
	if one is not already present.
	(v850_elf_set_note): New function.  Adds a note to a bfd.
	(v850_elf_copy_private_bfd_data): New function.  Copies V850
	notes.
	(v850_elf_merge_notes): New function.  Merges V850 notes.
	(print_v850_note): New function.  Displays a V850 note.
	(v850_elf_print_notes): New function. Displays all notes attached
	to a bfd.
	(v850_elf_merge_private_bfd_data): Call v850_elf_merge_notes.
	(v850_elf_print_private_bfd_data): Call v850_elf_print_notes.
	(v850_elf_fake_sections): Set the type of the V850 note section.
	* bfd-in.h (v850_elf_create_sections): Add prototype.
	(v850_elf_set_note): Add prototype.
	* bfd-in2.h: Regenerate.

binutils* readelf.c (get_machine_flags): Remove deprecated V850 machine
	flags.
	(get_v850_section_type_name): New function.  Handles V850 special
	sections.
	(get_section_type_name): Add support for V850.
	(get_v850_elf_note_type): New function.  Returns the name of a
	V850 note.
	(print_v850_note): New function.  Prints a V850 note.
	(process_v850_notes): New function.  Prints V850 notes.
	(process_note_sections): Add support for V850.

binutils/testsute
	* binutils-all/objcopy.exp: Skip the strip-10 test for the V850.

gas	* config/tc-v850.c (soft_float): New variable.
	(v850_data_8): New variable.
	(md_show_usage): Add -msoft-float/-mhard-float.
	(md_parse_option): Likewise.
	(md_begin): Set the default value of soft_float.
	(v850_md_end): New function.  Creates a note section.
	* config/tc-v850.h (md_end): Define.
	* doc/c-v850.texi: Document -msoft-float/-mhard-float.

gas/testsuite
	* gas/elf/elf.exp: Add special version of the section2 test for
	the V850.
	* gas/elf/section2.e-v850: New file.

include/elf
	* v850.h (EF_RH850_SIMD): Delete deprecated flag.
	(EF_RH850_CACHE): Likewise.
	(EF_RH850_MMU): Likewise.
	(EF_RH850_DATA_ALIGN8): Likewise.
	(SHT_RENESAS_IOP): Fix typo in name.
	(SHT_RENESAS_INFO): Define.
	(V850_NOTE_SECNAME): Define.
	(SIZEOF_V850_NOTE): Define.
	(V850_NOTE_NAME): Define.
	(enum v850_notes): New enum.
	(NUM_V850_NOTES): Define.

ld/ChangeLog
2015-02-24  Nick Clifton  <nickc@redhat.com>

	* Makefile.am (ev850.c): Add dependency upon
	$(srcdir)/emultempl/v850elf.em.
	(ev850_rh850.c): Likewise.
	* Makefile.in: Regenerate.
	* emultempl/v850elf.em: New file.
	* emulparams/v850.sh (EXTRA_EM_FILE): Define.
	* emulparams/v850_rh850.sh (EXTRA_EM_FILE): Define.
	* scripttempl/v850.sc: Add .note.renesas section.
	* scripttempl/v850_rh850.sc: Likewise.

ld/testsuite
	* ld-elf/extract-symbol-1sec.d: Expect to fail on the V850.

1 files changed, 88 insertions, 0 deletions

diff --git a/gas/config/tc-v850.c b/gas/config/tc-v850.c
index c48c011..fc55106 100644
--- a/gas/config/tc-v850.c
+++ b/gas/config/tc-v850.c
@@ -31,6 +31,9 @@
 static bfd_boolean warn_signed_overflows   = FALSE;
 static bfd_boolean warn_unsigned_overflows = FALSE;
 
+/* Non-zero if floating point insns are not being used.  */
+static signed int soft_float = -1;
+
 /* Indicates the target BFD machine number.  */
 static int machine = -1;
 
@@ -1537,6 +1540,8 @@ struct option md_longopts[] =
 
 size_t md_longopts_size = sizeof (md_longopts);
 
+static bfd_boolean v850_data_8 = FALSE;
+
 void
 md_show_usage (FILE *stream)
 {
@@ -1560,6 +1565,8 @@ md_show_usage (FILE *stream)
   fprintf (stream, _("  -mrh850-abi               Mark the binary as using the RH850 ABI (default)\n"));
   fprintf (stream, _("  -m8byte-align             Mark the binary as using 64-bit alignment\n"));
   fprintf (stream, _("  -m4byte-align             Mark the binary as using 32-bit alignment (default)\n"));
+  fprintf (stream, _("  -msoft-float              Mark the binary as not using FP insns (default for pre e2v3)\n"));
+  fprintf (stream, _("  -mhard-float              Mark the binary as using FP insns (default for e2v3 and up)\n"));
 }
 
 int
@@ -1646,6 +1653,14 @@ md_parse_option (int c, char *arg)
       v850_target_format = "elf32-v850-rh850";
     }
   else if (strcmp (arg, "8byte-align") == 0)
+    v850_data_8 = TRUE;
+  else if (strcmp (arg, "4byte-align") == 0)
+    v850_data_8 = FALSE;
+  else if (strcmp (arg, "soft-float") == 0)
+    soft_float = 1;
+  else if (strcmp (arg, "hard-float") == 0)
+    soft_float = 0;
+  else if (strcmp (arg, "8byte-align") == 0)
     v850_e_flags |= EF_RH850_DATA_ALIGN8;
   else if (strcmp (arg, "4byte-align") == 0)
     v850_e_flags &= ~ EF_RH850_DATA_ALIGN8;
@@ -1940,6 +1955,9 @@ md_begin (void)
     as_bad (_("Unable to determine default target processor from string: %s"),
 	    TARGET_CPU);
 
+  if (soft_float == -1)
+    soft_float = machine < bfd_mach_v850e2v3;
+
   v850_hash = hash_new ();
 
   /* Insert unique names into hash table.  The V850 instruction set
@@ -3716,3 +3734,73 @@ v850_force_relocation (struct fix *fixP)
 
   return generic_force_reloc (fixP);
 }
+
+/* Create a v850 note section.  */
+void
+v850_md_end (void)
+{
+  segT note_sec;
+  segT orig_seg = now_seg;
+  subsegT orig_subseg = now_subseg;
+  enum v850_notes id;
+
+  note_sec = subseg_new (V850_NOTE_SECNAME, 0);
+  bfd_set_section_flags (stdoutput, note_sec, SEC_HAS_CONTENTS | SEC_READONLY | SEC_MERGE);
+  bfd_set_section_alignment (stdoutput, note_sec, 2);
+
+  /* Provide default values for all of the notes.  */
+  for (id = V850_NOTE_ALIGNMENT; id <= NUM_V850_NOTES; id++)
+    {
+      int val = 0;
+      char * p;
+
+      /* Follow the standard note section layout:
+	 First write the length of the name string.  */
+      p = frag_more (4);
+      md_number_to_chars (p, 4, 4);
+
+      /* Next comes the length of the "descriptor", i.e., the actual data.  */
+      p = frag_more (4);
+      md_number_to_chars (p, 4, 4);
+
+      /* Write the note type.  */
+      p = frag_more (4);
+      md_number_to_chars (p, (valueT) id, 4);
+
+      /* Write the name field.  */
+      p = frag_more (4);
+      memcpy (p, V850_NOTE_NAME, 4);
+
+      /* Finally, write the descriptor.  */
+      p = frag_more (4);
+      switch (id)
+	{
+	case V850_NOTE_ALIGNMENT:
+	  val = v850_data_8 ? EF_RH850_DATA_ALIGN8 : EF_RH850_DATA_ALIGN4;
+	  break;
+
+	case V850_NOTE_DATA_SIZE:
+	  /* GCC does not currently support an option
+	     for 32-bit doubles with the V850 backend.  */
+	  val = EF_RH850_DOUBLE64;
+	  break;
+
+	case V850_NOTE_FPU_INFO:
+	  if (! soft_float)
+	    switch (machine)
+	      {
+	      case bfd_mach_v850e3v5: val = EF_RH850_FPU30; break;
+	      case bfd_mach_v850e2v3: val = EF_RH850_FPU20; break;
+	      default: break;
+	      }
+	  break;
+
+	default:
+	  break;
+	}
+      md_number_to_chars (p, val, 4);
+    }
+
+  /* Paranoia - we probably do not need this.  */
+  subseg_set (orig_seg, orig_subseg);
+}