From 1bce6bd86f99b05ddc311eb34545165983ff8ddc Mon Sep 17 00:00:00 2001 From: Paul Brook Date: Mon, 9 May 2011 13:17:58 +0000 Subject: 2011-05-09 Paul Brook 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. --- gas/doc/c-tic6x.texi | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'gas/doc/c-tic6x.texi') diff --git a/gas/doc/c-tic6x.texi b/gas/doc/c-tic6x.texi index b1e04f9..bc69160 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} -- cgit v1.1