2011-05-09 Paul Brook <paul@codesourcery.com>

	bfd/
	* elf32-tic6x.c (is_tic6x_elf_unwind_section_name,
	elf32_tic6x_fake_sections): New functions.
	(elf_backend_fake_sections): Define.

	gas/
	* config/tc-tic6x.c (streq): Define.
	(tic6x_get_unwind): New.
	(s_tic6x_cantunwind, s_tic6x_handlerdata, s_tic6x_endp,
	s_tic6x_personalityindex, s_tic6x_personality): New functions.
	(md_pseudo_table): Add "endp", "handlerdata", "personalityindex",
	"personality" and "cantunwind".
	(tic6x_regname_to_dw2regnum, tic6x_frame_initial_instructions,
	tic6x_start_unwind_section, tic6x_unwind_frame_regs,
	tic6x_pop_rts_offset_little, tic6x_pop_rts_offset_big,
	tic6x_unwind_reg_from_dwarf, tic6x_flush_unwind_word,
	tic6x_unwind_byte, tic6x_unwind_2byte, tic6x_unwind_uleb,
	tic6x_cfi_startproc, output_exidx_entry, tic6x_output_unwinding,
	tic6x_cfi_endproc): New.
	* config/tc-tic6x.h (TIC6X_NUM_UNWIND_REGS): Define.
	(tic6x_unwind_info): New.
	(tic6x_segment_info_type): Add marked_pr_dependency, unwind and
	text_unwind.
	(TARGET_USE_CFIPOP, tc_regname_to_dw2regnum,
	tc_cfi_frame_initial_instructions, DWARF2_DEFAULT_RETURN_COLUMN,
	DWARF2_CIE_DATA_ALIGNMENT, tc_cfi_startproc, tc_cfi_endproc,
	tc_cfi_section_name): Define.
	* doc/c-tic6x.texi: Document new unwinding directives.
	* dw2gencfi.c (tc_cfi_startproc, tc_cfi_endproc): Add default
	definitions.
	(cfi_insn_data, fde_entry, CFI_adjust_cfa_offset, CFI_return_column,
	CFI_rel_offset, CFI_escape, CFI_signal_frame, CFI_val_encoded_addr):
	Move to dw2gencfi.h.
	(CFI_EMIT_target): Define.
	(dot_cfi_sections): Check tc_cfi_section_name.
	(dot_cfi_startproc): Use tc_cfi_startproc.
	(dot_cfi_endproc): Use tc_cfi_endproc.
	* dw2gencfi.h (cfi_insn_data, fde_entry, CFI_adjust_cfa_offset,
	CFI_return_column, CFI_rel_offset, CFI_escape, CFI_signal_frame,
	CFI_val_encoded_addr):  Move to here from dw2gencfi.c.

	gas/testsuite:
	* gas/tic6x/unwind-1.d: New test.
	* gas/tic6x/unwind-1.s: New test.
	* gas/tic6x/unwind-2.d: New test.
	* gas/tic6x/unwind-2.s: New test.
	* gas/tic6x/unwind-3.d: New test.
	* gas/tic6x/unwind-3.s: New test.
	* gas/tic6x/unwind-bad-1.d: New test.
	* gas/tic6x/unwind-bad-1.s: New test.
	* gas/tic6x/unwind-bad-1.l: New test.
	* gas/tic6x/unwind-bad-2.d: New test.
	* gas/tic6x/unwind-bad-2.s: New test.
	* gas/tic6x/unwind-bad-2.l: New test.

	include/
	* elf/tic6x.h (ELF_STRING_C6000_unwind,
	ELF_STRING_C6000_unwind_info, ELF_STRING_C6000_unwind_once,
	ELF_STRING_C6000_unwind_info_once): Define.

1 files changed, 31 insertions, 0 deletions

diff --git a/bfd/elf32-tic6x.c b/bfd/elf32-tic6x.c
index 6b1065432f..a70ef01c05 100644
--- a/bfd/elf32-tic6x.c
+++ b/bfd/elf32-tic6x.c
@@ -1886,6 +1886,36 @@ elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info *info,
   return TRUE;
 }
 
+/* Return TRUE if this is an unwinding table index.  */
+
+static bfd_boolean
+is_tic6x_elf_unwind_section_name (const char *name)
+{
+  return (CONST_STRNEQ (name, ELF_STRING_C6000_unwind)
+	  || CONST_STRNEQ (name, ELF_STRING_C6000_unwind_once));
+}
+
+
+/* Set the type and flags for an unwinding index table.  We do this by
+   the section name, which is a hack, but ought to work.  */
+
+static bfd_boolean
+elf32_tic6x_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
+			   Elf_Internal_Shdr *hdr, asection *sec)
+{
+  const char * name;
+
+  name = bfd_get_section_name (abfd, sec);
+
+  if (is_tic6x_elf_unwind_section_name (name))
+    {
+      hdr->sh_type = SHT_C6000_UNWIND;
+      hdr->sh_flags |= SHF_LINK_ORDER;
+    }
+
+  return TRUE;
+}
+
 /* Update the got entry reference counts for the section being removed.  */
 
 static bfd_boolean
@@ -3979,6 +4009,7 @@ elf32_tic6x_copy_private_data (bfd * ibfd, bfd * obfd)
 #define elf_backend_plt_readonly	1
 #define elf_backend_rela_normal		1
 #define elf_backend_got_header_size     8
+#define elf_backend_fake_sections       elf32_tic6x_fake_sections
 #define elf_backend_gc_sweep_hook	elf32_tic6x_gc_sweep_hook
 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
 #define elf_backend_modify_program_headers \