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, 32 insertions, 0 deletions

diff --git a/gas/doc/c-tic6x.texi b/gas/doc/c-tic6x.texi
index b1e04f9a7a..bc69160c9d 100644
--- a/gas/doc/c-tic6x.texi
+++ b/gas/doc/c-tic6x.texi
@@ -131,6 +131,14 @@ subsequent directive overriding it.
 @item .arch @var{arch}
 This has the same effect as @option{-march=@var{arch}}.
 
+@cindex @code{.cantunwind} directive, TIC6X
+@item .cantunwind
+Prevents unwinding through the current function.  No personality routine
+or exception table data is required or permitted.
+
+If this is not specified then frame unwinding information will be
+constructed from CFI directives. @pxref{CFI directives}.
+
 @cindex @code{.c6xabi_attribute} directive, TIC6X
 @item .c6xabi_attribute @var{tag}, @var{value}
 Set the C6000 EABI build attribute @var{tag} to @var{value}.
@@ -150,11 +158,35 @@ The @var{tag} is either an attribute number or one of
 @item .ehtype @var{symbol}
 Output an exception type table reference to @var{symbol}.
 
+@cindex @code{.endp} directive, TIC6X
+@item .endp
+Marks the end of and exception table or function.  If preceeded by a
+@code{.handlerdata} directive then this also switched back to the previous
+text section.
+
+@cindex @code{.handlerdata} directive, TIC6X
+@item .handlerdata
+Marks the end of the current function, and the start of the exception table
+entry for that function.  Anything between this directive and the
+@code{.endp} directive will be added to the exception table entry.
+
+Must be preceded by a CFI block containing a @code{.cfi_lsda} directive.
+directive.
+
 @cindex @code{.nocmp} directive, TIC6X
 @item .nocmp
 Disallow use of C64x+ compact instructions in the current text
 section.
 
+@cindex @code{.personalityindex} directive, TIC6X
+@item .personalityindex @var{index}
+Sets the personality routine for the current function to the ABI specified 
+compact routine number @var{index}
+
+@cindex @code{.personality} directive, TIC6X
+@item .personality @var{name}
+Sets the personality routine for the current function to @var{name}.
+
 @cindex @code{.scomm} directive, TIC6X
 @item .scomm @var{symbol}, @var{size}, @var{align}
 Like @code{.comm}, creating a common symbol @var{symbol} with size @var{size}