| Commit message (Collapse) | Author | Age | Files | Lines |
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Exclusively all users should use restore_line_pointer() instead, at
which point SKIP_WHITESPACE() suffices as a check afterwards.
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While originally this was in preparation of a subsequent change making
SUPPORT_FRAME_LINKONCE potentially dependent on a global variable, the
construct appears unlikely to have been correct in the first place: The
variable would have been passed reliably uninitialized when
SUPPORT_FRAME_LINKONCE is build-time true.
While there correct indentation of the parameters passed to
get_cfi_seg().
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scfidw2gen will use this for processing the .cfi_sections directive.
gas/
* dw2gencfi.c (dot_cfi_sections): Not static anymore.
* dw2gencfi.h (dot_cfi_sections): Mark as extern.
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Move the following three defines to the header file, so the SCFI
machinery can use them:
- tc_cfi_frame_initial_instructions
- tc_cfi_startproc
- tc_cfi_endproc
gas/
* dw2gencfi.c: Move from ...
* dw2gencfi.h: ... to here.
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gas/
* dw2gencfi.c (cfi_set_last_fde): New definition.
(dot_cfi_endproc): Use it.
(dot_cfi_fde_data): Likewise.
(dot_cfi_inline_lsda): Likewise.
* dw2gencfi.h (struct fde_entry): New declaration.
(cfi_set_last_fde): Likewise.
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The code in dw2gencfi.c was checking variable cfi_sections and
all_cfi_sections seemingly randomly. Accessing all_cfi_sections seems
to the correct variable to access.
The data in cfi_sections has already been propagated to all_cfi_sections
once cfi_dot_startproc () has been called.
gas/
* dw2gencfi.c (dot_cfi_startproc): Use all_cfi_sections
instead.
(dot_cfi_endproc): Likewise.
(dot_cfi_fde_data): Likewise.
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cfi_sections_set is best set to true in cfi_dot_startproc (). Setting
it to true again in other APIs (dot_cfi_endproc, dot_cfi_fde_data, and
cfi_finish) is unnecessary. Also, move setting the global var
all_cfi_sections into cfi_set_sections ().
gas/
* dw2gencfi.c (cfi_set_sections): Set cfi_sections_set and
cfi_sections here.
(dot_cfi_startproc): Remove unnecessarily setting
cfi_set_sections to true.
(dot_cfi_endproc): Likewise.
(dot_cfi_fde_data): Likewise.
(cfi_finish): Likewise.
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Adds two new external authors to etc/update-copyright.py to cover
bfd/ax_tls.m4, and adds gprofng to dirs handled automatically, then
updates copyright messages as follows:
1) Update cgen/utils.scm emitted copyrights.
2) Run "etc/update-copyright.py --this-year" with an extra external
author I haven't committed, 'Kalray SA.', to cover gas testsuite
files (which should have their copyright message removed).
3) Build with --enable-maintainer-mode --enable-cgen-maint=yes.
4) Check out */po/*.pot which we don't update frequently.
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The newer update-copyright.py fixes file encoding too, removing cr/lf
on binutils/bfdtest2.c and ld/testsuite/ld-cygwin/exe-export.exp, and
embedded cr in binutils/testsuite/binutils-all/ar.exp string match.
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Currently supported for x86_64 and aarch64 only.
[PS: Currently, the compiler has not been adapted to generate
".cfi_sections" with ".sframe" in it. The newly added command line
option of --gsframe provides an easy way to try out .sframe support
in the toolchain.]
gas interprets the CFI directives to generate DWARF-based .eh_frame
info. These internal DWARF structures are now consumed by
gen-sframe.[ch] sub-system to, in turn, create the SFrame unwind
information. These internal DWARF structures are read-only for the
purpose of SFrame unwind info generation.
SFrame unwind info generation does not impact .eh_frame unwind info
generation. Both .eh_frame and .sframe can co-exist in an ELF file,
if so desired by the user.
Recall that SFrame unwind information only contains the minimal
necessary information to generate backtraces and does not provide
information to recover all callee-saved registers. The reason being
that callee-saved registers other than FP are not needed for stack
unwinding, and hence are not included in the .sframe section.
Consequently, gen-sframe.[ch] only needs to interpret a subset of
DWARF opcodes in gas. More details follow.
[Set 1, Interpreted] The following opcodes are interpreted:
- DW_CFA_advance_loc
- DW_CFA_def_cfa
- DW_CFA_def_cfa_register
- DW_CFA_def_cfa_offset
- DW_CFA_offset
- DW_CFA_remember_state
- DW_CFA_restore_state
- DW_CFA_restore
[Set 2, Bypassed] The following opcodes are acknowledged but are not
necessary for generating SFrame unwind info:
- DW_CFA_undefined
- DW_CFA_same_value
Anything else apart from the two above-mentioned sets is skipped
altogether. This means that any function containing a CFI directive not
in Set 1 or Set 2 above, will not have any SFrame unwind information
generated for them. Holes in instructions covered by FREs of a single
FDE are not representable in the SFrame unwind format.
As few examples, following opcodes are not processed for .sframe
generation, and are skipped:
- .cfi_personality*
- .cfi_*lsda
- .cfi_escape
- .cfi_negate_ra_state
- ...
Not processing .cfi_escape, .cfi_negate_ra_state will cause SFrame
unwind information to be absent for SFrame FDEs that contain these CFI
directives, hence affecting the asynchronicity.
x86-64 and aarch64 backends need to have a few new definitions and
functions for .sframe generation. These provide gas with architecture
specific information like the SP/FP/RA register numbers and an
SFrame-specific ABI marker.
Lastly, the patch also implements an optimization for size, where
specific fragments containing SFrame FRE start address and SFrame FDE
function are fixed up. This is similar to other similar optimizations
in gas, where fragments are sized and fixed up when the associated
symbols can be resolved. This optimization is controlled by a #define
SFRAME_FRE_TYPE_SELECTION_OPT and should be easy to turn off if needed.
The optimization is on by default for both x86_64 and aarch64.
ChangeLog:
* gas/Makefile.am: Include gen-sframe.c and sframe-opt.c.
* gas/Makefile.in: Regenerated.
* gas/as.h (enum _relax_state): Add new state rs_sframe.
(sframe_estimate_size_before_relax): New function.
(sframe_relax_frag): Likewise.
(sframe_convert_frag): Likewise.
* gas/config/tc-aarch64.c (aarch64_support_sframe_p): New
definition.
(aarch64_sframe_ra_tracking_p): Likewise.
(aarch64_sframe_cfa_ra_offset): Likewise.
(aarch64_sframe_get_abi_arch): Likewise.
(md_begin): Set values of sp/fp/ra registers.
* gas/config/tc-aarch64.h (aarch64_support_sframe_p): New
declaration.
(support_sframe_p): Likewise.
(SFRAME_CFA_SP_REG): Likewise.
(SFRAME_CFA_FP_REG): Likewise.
(SFRAME_CFA_RA_REG): Likewise.
(aarch64_sframe_ra_tracking_p): Likewise.
(sframe_ra_tracking_p): Likewise.
(aarch64_sframe_cfa_ra_offset): Likewise.
(sframe_cfa_ra_offset): Likewise.
(aarch64_sframe_get_abi_arch): Likewise.
(sframe_get_abi_arch): Likewise.
* gas/config/tc-i386.c (x86_support_sframe_p): New definition.
(x86_sframe_ra_tracking_p): Likewise.
(x86_sframe_cfa_ra_offset): Likewise.
(x86_sframe_get_abi_arch): Likewise.
* gas/config/tc-i386.h (x86_support_sframe_p): New declaration.
(support_sframe_p): Likewise.
(SFRAME_CFA_SP_REG): Likewise.
(SFRAME_CFA_FP_REG): Likewise.
(x86_sframe_ra_tracking_p): Likewise.
(sframe_ra_tracking_p): Likewise.
(x86_sframe_cfa_ra_offset): Likewise.
(sframe_cfa_ra_offset): Likewise.
(x86_sframe_get_abi_arch): Likewise.
(sframe_get_abi_arch): Likewise.
* gas/config/tc-xtensa.c (unrelaxed_frag_max_size): Add case for
rs_sframe.
* gas/doc/as.texi: Add .sframe to the documentation for
.cfi_sections.
* gas/dw2gencfi.c (cfi_finish): Create a .sframe section.
* gas/dw2gencfi.h (CFI_EMIT_sframe): New definition.
* gas/write.c (cvt_frag_to_fill): Handle rs_sframe.
(relax_segment): Likewise.
* gas/gen-sframe.c: New file.
* gas/gen-sframe.h: New file.
* gas/sframe-opt.c: New file.
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This patch is based on MULTIPLE_FRAME_SECTIONS and EH_FRAME_LINKONCE,
it allows backend to enable this feature and use '--gc-sections' simply.
* gas/dw2gencfi.h (TARGET_MULTIPLE_EH_FRAME_SECTIONS): New.
(MULTIPLE_FRAME_SECTIONS): Add TARGET_MULTIPLE_EH_FRAME_SECTIONS.
* gas/dw2gencfi.c (EH_FRAME_LINKONCE): Add TARGET_MULTIPLE_EH_FRAME_SECTIONS.
(is_now_linkonce_segment): Likewise.
(get_cfi_seg): Create relocation info between .eh_frame.* and .text.* section.
* bfd/elf-bfd.h (elf_backend_can_make_multiple_eh_frame): New.
* bfd/elfxx-target.h (elf_backend_can_make_multiple_eh_frame): Likewise.
* bfd/elflink.c (_bfd_elf_default_action_discarded): Add checking for
elf_backend_can_make_multiple_eh_frame.
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Use notes obstack for dwcfi_hash entries, and free table. Freeing the
table makes memory checkers complain more about "definitely lost"
memory as we've moved some from the "still reachable" category.
That will be fixed with a later patch.
* dw2gencfi.c (get_debugseg_name): Allocate on notes obstack.
(alloc_debugseg_item): Likewise.
(dwcfi_hash_find_or_make): Adjust failure path free.
(cfi_finish): Delete dwfci_hash.
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The result of running etc/update-copyright.py --this-year, fixing all
the files whose mode is changed by the script, plus a build with
--enable-maintainer-mode --enable-cgen-maint=yes, then checking
out */po/*.pot which we don't update frequently.
The copy of cgen was with commit d1dd5fcc38ead reverted as that commit
breaks building of bfp opcodes files.
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Let's make sure what we allow in the CIE initial instructions and what
select_cie_for_fde compares for a match is always in sync. Also
correct the previous patch that allowed DW_CFA_GNU_window_save to be
part of the CIE initial instructions, which was likely a mistake.
PR 27723
* dw2gencfi.c (initial_cie_insn): New function, extracted from..
(select_cie_for_fde): ..here. Simplify.
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PR 27723
* dw2gencfi.c (select_cie_for_fde): Handle DW_CFA_val_offset,
DW_CFA_GNU_window_save and DW_CFA_restore_state.
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gas/ChangeLog:
* as.c (select_emulation_mode): Use startswith.
* config/m68k-parse.y: Likewise.
* config/obj-aout.c (obj_aout_type): Likewise.
* config/obj-elf.c (elf_common_parse): Likewise.
(obj_elf_section_type): Likewise.
(obj_elf_section_word): Likewise.
(obj_elf_section): Likewise.
(obj_elf_symver): Likewise.
(adjust_stab_sections): Likewise.
* config/obj-evax.c (evax_shorten_name): Likewise.
* config/obj-macho.c (obj_mach_o_is_frame_section): Likewise.
* config/tc-aarch64.c (parse_aarch64_imm_float): Likewise.
(aarch64_parse_features): Likewise.
(create_register_alias): Likewise.
(aarch64_data_in_code): Likewise.
(md_parse_option): Likewise.
* config/tc-alpha.c (s_alpha_section_word): Likewise.
(s_alpha_pdesc): Likewise.
* config/tc-arc.c (tokenize_extregister): Likewise.
* config/tc-arm.c (create_register_alias): Likewise.
(create_neon_reg_alias): Likewise.
(parse_ifimm_zero): Likewise.
(parse_qfloat_immediate): Likewise.
(arm_elf_section_type): Likewise.
(arm_parse_extension): Likewise.
(aeabi_set_public_attributes): Likewise.
(s_arm_arch_extension): Likewise.
(arm_data_in_code): Likewise.
(start_unwind_section): Likewise.
* config/tc-avr.c (avr_ldi_expression): Likewise.
* config/tc-csky.c (is_freglist_legal): Likewise.
(csky_s_section): Likewise.
* config/tc-d30v.c (do_assemble): Likewise.
* config/tc-dlx.c (parse_operand): Likewise.
* config/tc-epiphany.c (md_assemble): Likewise.
* config/tc-h8300.c (h8300_elf_section): Likewise.
(get_operand): Likewise.
* config/tc-hppa.c (pa_ip): Likewise.
(pa_level): Likewise.
(pa_space): Likewise.
* config/tc-i386.c (i386_mach): Likewise.
(md_assemble): Likewise.
(check_VecOperations): Likewise.
(i386_target_format): Likewise.
(i386_elf_section_type): Likewise.
* config/tc-ia64.c (start_unwind_section): Likewise.
(md_parse_option): Likewise.
(is_taken_branch): Likewise.
(idesc->name,): Likewise.
(note_register_values): Likewise.
(do_alias): Likewise.
* config/tc-m32c.c (insn_to_subtype): Likewise.
* config/tc-m68hc11.c (get_operand): Likewise.
(md_assemble): Likewise.
* config/tc-m68k.c (m68k_ip): Likewise.
(m68k_elf_suffix): Likewise.
* config/tc-mcore.c (mcore_s_section): Likewise.
* config/tc-metag.c (parse_get_set): Likewise.
(md_parse_option): Likewise.
* config/tc-microblaze.c (parse_imm): Likewise.
(check_got): Likewise.
(md_apply_fix): Likewise.
* config/tc-mips.c (CPU_HAS_MIPS16): Likewise.
(md_begin): Likewise.
(s_is_linkonce): Likewise.
(check_regno): Likewise.
(match_float_constant): Likewise.
(classify_vr4120_insn): Likewise.
(match_insn): Likewise.
(mips_after_parse_args): Likewise.
(s_change_sec): Likewise.
(s_option): Likewise.
(parse_code_option): Likewise.
(md_section_align): Likewise.
(nopic_need_relax): Likewise.
* config/tc-mmix.c (mmix_handle_mmixal): Likewise.
* config/tc-mn10300.c (mn10300_fix_adjustable): Likewise.
(mn10300_end_of_match): Likewise.
* config/tc-msp430.c (msp430_make_init_symbols): Likewise.
* config/tc-nds32.c (nds32_parse_option): Likewise.
* config/tc-nds32.h (md_do_align): Likewise.
* config/tc-nios2.c (strprefix): Likewise.
(nios2_special_relocation_p): Likewise.
(nios2_parse_base_register): Likewise.
(nios2_cons): Likewise.
* config/tc-ns32k.c (addr_mode): Likewise.
* config/tc-pdp11.c (set_option): Likewise.
(parse_reg): Likewise.
(parse_ac5): Likewise.
(parse_op_no_deferred): Likewise.
(set_cpu_model): Likewise.
(set_machine_model): Likewise.
* config/tc-pj.c (md_operand): Likewise.
* config/tc-ppc.c (ppc_set_cpu): Likewise.
(ppc_arch): Likewise.
(ppc_section_type): Likewise.
* config/tc-s12z.c (tb_reg_rel): Likewise.
(tb_opr_rel): Likewise.
* config/tc-s390.c (s390_parse_cpu): Likewise.
(md_parse_option): Likewise.
* config/tc-score.c (s3_nopic_need_relax): Likewise.
(s3_pic_need_relax): Likewise.
* config/tc-score7.c (s7_nopic_need_relax): Likewise.
(s7_pic_need_relax): Likewise.
* config/tc-sh.h (SUB_SEGMENT_ALIGN): Likewise.
* config/tc-sparc.c (md_parse_option): Likewise.
(sparc_ip): Likewise.
(s_reserve): Likewise.
(s_common): Likewise.
(s_seg): Likewise.
(sparc_cons): Likewise.
* config/tc-tic54x.c (stag_add_field): Likewise.
(tic54x_endstruct): Likewise.
* config/tc-tic6x.c (tic6x_start_unwind_section): Likewise.
* config/tc-v850.c (v850_comm): Likewise.
(md_begin): Likewise.
(md_assemble): Likewise.
* config/tc-vax.c (vax_cons): Likewise.
* config/tc-wasm32.c (wasm32_leb128): Likewise.
* config/tc-xstormy16.c (md_operand): Likewise.
* config/tc-xtensa.c (get_directive): Likewise.
(xg_instruction_matches_option_term): Likewise.
(is_unaligned_label): Likewise.
(cache_literal_section): Likewise.
* config/xtensa-relax.c (parse_precond): Likewise.
(parse_option_cond): Likewise.
(transition_applies): Likewise.
(wide_branch_opcode): Likewise.
* dw2gencfi.c: Likewise.
* dwarf2dbg.c (dwarf2_directive_filename): Likewise.
* ehopt.c (get_cie_info): Likewise.
* input-file.c (input_file_open): Likewise.
* listing.c (listing_newline): Likewise.
(debugging_pseudo): Likewise.
* read.c (read_a_source_file): Likewise.
* write.c (adjust_reloc_syms): Likewise.
(compress_debug): Likewise.
(maybe_generate_build_notes): Likewise.
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* as.h (POISON_BFD_BOOLEAN): Define.
* as.c, * as.h, * atof-generic.c, * config/atof-ieee.c,
* config/bfin-aux.h, * config/obj-coff.c, * config/obj-ecoff.c,
* config/obj-elf.c, * config/obj-elf.h, * config/obj-som.c,
* config/tc-aarch64.c, * config/tc-alpha.c, * config/tc-arc.c,
* config/tc-arc.h, * config/tc-arm.c, * config/tc-arm.h,
* config/tc-avr.c, * config/tc-avr.h, * config/tc-bfin.c,
* config/tc-bfin.h, * config/tc-bpf.c, * config/tc-cris.c,
* config/tc-csky.c, * config/tc-csky.h, * config/tc-d10v.c,
* config/tc-d10v.h, * config/tc-d30v.c, * config/tc-d30v.h,
* config/tc-dlx.c, * config/tc-dlx.h, * config/tc-epiphany.c,
* config/tc-epiphany.h, * config/tc-fr30.c, * config/tc-fr30.h,
* config/tc-frv.c, * config/tc-frv.h, * config/tc-ft32.c,
* config/tc-ft32.h, * config/tc-h8300.c, * config/tc-hppa.c,
* config/tc-i386-intel.c, * config/tc-i386.c, * config/tc-ia64.c,
* config/tc-ip2k.c, * config/tc-iq2000.c, * config/tc-iq2000.h,
* config/tc-lm32.c, * config/tc-lm32.h, * config/tc-m32c.c,
* config/tc-m32c.h, * config/tc-m32r.c, * config/tc-m32r.h,
* config/tc-m68hc11.c, * config/tc-m68k.c, * config/tc-mcore.c,
* config/tc-mcore.h, * config/tc-mep.c, * config/tc-mep.h,
* config/tc-metag.c, * config/tc-metag.h,
* config/tc-microblaze.c, * config/tc-mips.c, * config/tc-mips.h,
* config/tc-mmix.c, * config/tc-mn10200.c, * config/tc-mn10300.c,
* config/tc-mn10300.h, * config/tc-moxie.c, * config/tc-msp430.c,
* config/tc-msp430.h, * config/tc-mt.c, * config/tc-mt.h,
* config/tc-nds32.c, * config/tc-nds32.h, * config/tc-nios2.c,
* config/tc-ns32k.c, * config/tc-or1k.c, * config/tc-or1k.h,
* config/tc-pdp11.c, * config/tc-ppc.c, * config/tc-pru.c,
* config/tc-pru.h, * config/tc-riscv.c, * config/tc-riscv.h,
* config/tc-rx.c, * config/tc-rx.h, * config/tc-s12z.c,
* config/tc-s12z.h, * config/tc-s390.c, * config/tc-score.c,
* config/tc-score.h, * config/tc-score7.c, * config/tc-sh.c,
* config/tc-sh.h, * config/tc-spu.c, * config/tc-tic54x.c,
* config/tc-tic6x.c, * config/tc-tic6x.h, * config/tc-tilegx.c,
* config/tc-tilepro.c, * config/tc-v850.c, * config/tc-v850.h,
* config/tc-visium.c, * config/tc-visium.h, * config/tc-wasm32.c,
* config/tc-wasm32.h, * config/tc-xc16x.c, * config/tc-xgate.c,
* config/tc-xstormy16.c, * config/tc-xstormy16.h,
* config/tc-xtensa.c, * config/tc-xtensa.h, * config/tc-z80.c,
* config/tc-z8k.c, * config/xtensa-istack.h,
* config/xtensa-relax.c, * config/xtensa-relax.h, * dw2gencfi.c,
* dwarf2dbg.c, * dwarf2dbg.h, * expr.c, * expr.h, * frags.c,
* frags.h, * listing.c, * macro.c, * output-file.c, * read.c,
* read.h, * stabs.c, * symbols.c, * write.c: Replace bfd_boolean
with bool, FALSE with false, and TRUE with true.
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Inserting with replacement is wrong for some gas hash table uses.
This patch implements an htab_insert that conditionally replaces, and
similarly for str_hash_insert. str_hash_insert with replace=0 is
roughly equivalent to the older hash_insert, and str_hash_insert with
replace=1 to the older hash_jam, but return values are different. I
found it useful to know whether the slot was occupied prior to
inserting/replacing. I've also reinstated the fatal errors on messing
up opcode tables with duplicates.
PR 26513
* hash.h (htab_insert): Update prototype and comment.
(struct string_tuple): Make "value" a const void*.
(string_tuple_alloc): Likewise.
(str_hash_find, str_hash_find_n): Cast returned value.
(str_hash_insert): Add "replace" parameter, and return slot pointer.
Free alloc'd element when not inserted.
* hash.c (htab_insert): Likewise. Return slot when element exists,
otherwise return NULL.
* read.c (pop_insert): Insert into hash table without first searching.
* config/tc-avr.c (md_begin): Likewise.
* config/tc-msp430.c (md_begin): Likewise.
* config/tc-nds32.c (nds32_init_nds32_pseudo_opcodes): Likewise.
* config/tc-v850.c (md_begin): Likewise.
* macro.c (do_formals, define_macro, macro_expand_body): Likewise.
(delete_macro): Delete from hash table.
* config/tc-tic54x.c (subsym_create_or_replace): Correct logic.
* symbols.c (local_symbol_make, symbol_table_insert): Allow
replacement of hash table entries.
* config/obj-coff-seh.c (seh_hash_insert): Likewise.
* config/obj-coff.c (tag_insert): Likewise.
* config/tc-iq2000.c (iq2000_add_macro): Likewise.
* config/tc-m68k.c (md_begin): Likewise for aliases.
* config/tc-tic4x.c (tic4x_asg): Likewise.
* config/tc-tic6x.c (md_begin): Likewise.
* dw2gencfi.c (dwcfi_hash_find_or_make): Disallow replacement of
hash table entries.
* ecoff.c (add_string, get_tag): Likewise.
* macro.c (expand_irp): Likewise.
* config/obj-elf.c (build_additional_section_info): Likewise.
* config/tc-aarch64.c (insert_reg_alias): Likewise.
(checked_hash_insert): Likewise.
* config/tc-alpha.c (get_alpha_reloc_tag, md_begin): Likewise.
* config/tc-arc.c (arc_insert_opcode, declare_register): Likewise.
(declare_addrtype, md_begin, arc_extcorereg): Likewise.
* config/tc-arm.c (insert_reg_alias): Likewise.
(arm_tc_equal_in_insn, md_begin): Likewise.
* config/tc-cr16.c (initialise_reg_hash_table, md_begin): Likewise.
* config/tc-cris.c (md_begin): Likewise.
* config/tc-crx.c (md_begin): Likewise.
* config/tc-csky.c (md_begin): Likewise.
* config/tc-d10v.c (md_begin): Likewise.
* config/tc-dlx.c (md_begin): Likewise.
* config/tc-ft32.c (md_begin): Likewise.
* config/tc-h8300.c (md_begin): Likewise.
* config/tc-hppa.c (md_begin): Likewise.
* config/tc-i386.c (md_begin): Likewise.
* config/tc-ia64.c (dot_rot, dot_entry, declare_register): Likewise.
(md_begin, dot_alias): Likewise.
* config/tc-m68hc11.c (md_begin): Likewise.
* config/tc-m68k.c (md_begin): Likewise.
* config/tc-mcore.c (md_begin): Likewise.
* config/tc-microblaze.c (md_begin): Likewise.
* config/tc-mips.c (md_begin): Likewise.
* config/tc-mmix.c (md_begin): Likewise.
* config/tc-mn10200.c (md_begin): Likewise.
* config/tc-mn10300.c (md_begin): Likewise.
* config/tc-moxie.c (md_begin): Likewise.
* config/tc-nds32.c (nds32_relax_hint, md_begin): Likewise.
* config/tc-nios2.c (md_begin): Likewise.
* config/tc-ns32k.c (md_begin): Likewise.
* config/tc-pdp11.c (md_begin): Likewise.
* config/tc-pj.c (fake_opcode, md_begin): Likewise.
* config/tc-ppc.c (ppc_setup_opcodes): Likewise.
* config/tc-pru.c (md_begin): Likewise.
* config/tc-riscv.c (init_ext_version_hash): Likewise.
(init_opcode_names_hash, hash_reg_name, init_opcode_hash): Likewise.
(riscv_init_csr_hash): Likewise.
* config/tc-s390.c (s390_setup_opcodes, md_begin): Likewise.
* config/tc-score.c (s3_insert_reg): Likewise.
(s3_build_score_ops_hsh, s3_build_dependency_insn_hsh): Likewise.
* config/tc-score7.c (s7_build_score_ops_hsh): Likewise.
(s7_build_dependency_insn_hsh, s7_insert_reg): Likewise.
* config/tc-sh.c (md_begin): Likewise.
* config/tc-sparc.c (md_begin): Likewise.
* config/tc-spu.c (md_begin): Likewise.
* config/tc-tic30.c (md_begin): Likewise.
* config/tc-tic4x.c (tic4x_inst_insert): Likewise.
* config/tc-tic54x.c (stag_add_field_symbols, md_begin): Likewise.
(tic54x_endstruct, tic54x_var, tic54x_macro_info): Likewise.
(subsym_substitute): Likewise.
* config/tc-tilegx.c (md_begin): Likewise.
* config/tc-tilepro.c (md_begin): Likewise.
* config/tc-vax.c (vip_begin): Likewise.
* config/tc-wasm32.c (md_begin): Likewise.
* config/tc-xgate.c (md_begin): Likewise.
* config/tc-z8k.c (md_begin): Likewise.
* testsuite/gas/ppc/dcbt.d,
* testsuite/gas/ppc/dcbt.s: New test.
* testsuite/gas/ppc/ppc.exp: Run it.
* ecoff.c (add_string): Report fatal error on duplicates.
* config/tc-alpha.c (md_begin): Likewise.
* config/tc-arc.c (arc_insert_opcode, declare_register): Likewise.
(declare_addrtype, md_begin, arc_extcorereg): Likewise.
* config/tc-cr16.c (initialise_reg_hash_table, md_begin): Likewise.
* config/tc-cris.c (md_begin): Likewise.
* config/tc-crx.c (md_begin): Likewise.
* config/tc-dlx.c (md_begin): Likewise.
* config/tc-hppa.c (md_begin): Likewise.
* config/tc-i386.c (md_begin): Likewise.
* config/tc-ia64.c (dot_rot, dot_entry, declare_register): Likewise.
(md_begin): Likewise.
* config/tc-m68k.c (md_begin): Likewise.
* config/tc-mips.c (md_begin): Likewise.
* config/tc-nios2.c (md_begin): Likewise.
* config/tc-ns32k.c (md_begin): Likewise.
* config/tc-ppc.c (ppc_setup_opcodes): Likewise.
* config/tc-pru.c (md_begin): Likewise.
* config/tc-riscv.c (init_ext_version_hash): Likewise.
(init_opcode_names_hash, hash_reg_name, init_opcode_hash): Likewise.
* config/tc-s390.c (s390_setup_opcodes, md_begin): Likewise.
* config/tc-sparc.c (md_begin): Likewise.
* config/tc-tic30.c (md_begin): Likewise.
* config/tc-tic4x.c (tic4x_inst_insert): Likewise.
* config/tc-tilegx.c (md_begin): Likewise.
* config/tc-tilepro.c (md_begin): Likewise.
* config/tc-vax.c (vip_begin): Likewise.
* config/tc-alpha.c,
* config/tc-arm.c,
* config/tc-avr.c,
* config/tc-cr16.c,
* config/tc-csky.c,
* config/tc-i386.c,
* config/tc-m68hc11.c,
* config/tc-m68k.c,
* config/tc-microblaze.c,
* config/tc-ns32k.c,
* config/tc-pj.c,
* config/tc-ppc.c,
* config/tc-score.c,
* config/tc-score7.c,
* config/tc-tic4x.c,
* config/tc-tic54x.c,
* config/tc-tilegx.c,
* config/tc-tilepro.c,
* config/tc-xgate.c: Formatting.
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* dw2gencfi.c (dwcfi_hash_insert): Use htab_t and str_hash_*
functions.
(dwcfi_hash_find): Likewise.
(dwcfi_hash_find_or_make): Likewise.
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This patch implements the .cfi_negate_ra_state to be consistent with
LLVM (https://reviews.llvm.org/D50136). The relevant DWARF code DW_CFA_AARCH64_negate_ra_state
is multiplexed on top of DW_CFA_GNU_window_save, as per
https://gcc.gnu.org/ml/gcc-patches/2017-08/msg00753.html
I believe this is the simplest patch implementing this and is needed to
allow users to build, for example, the Linux kernel with Armv8.3-A
pointer authentication support with Clang while using gas as the
assembler, which is a common usecase.
gas/
2019-12-06 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* dw2gencfi.c (cfi_pseudo_table): Add cfi_negate_ra_state.
* testsuite/gas/aarch64/pac_negate_ra_state.s: New file.
* testsuite/gas/aarch64/pac_negate_ra_state.d: Likewise.
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In version 1 of DWARF CIE format, the return register column is just a
single byte. For targets with large numbers of DWARF registers, any
use of a register with a high number for the return column
will (currently) silently overflow giving incorrect DWARF.
This commit adds an error when the overflow occurs.
gas/ChangeLog:
* dw2gencfi.c (output_cie): Error on return column overflow.
* testsuite/gas/riscv/cie-rtn-col-1.d: New file.
* testsuite/gas/riscv/cie-rtn-col-3.d: New file.
* testsuite/gas/riscv/cie-rtn-col.s: New file.
Change-Id: I1809f739ba7771737ec012807f0260e1a3ed5e64
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Add a flag to control the version of CIE that is generated. By
default gas produces CIE version 1, and this continues to be the
default after this patch.
However, a user can now provide --gdwarf-cie-version=NUMBER to switch
to either version 3 or version 4 of CIE, version 2 was never released,
and so causes an error as does any number less than 1 or greater than
4.
Producing version 4 CIE requires two new fields to be added to the
CIE, an address size field, and an segment selector field. For a flat
address space the DWARF specification indicates that the segment
selector should be 0, and the address size fields just contains the
address size in bytes. For now we support 4 or 8 byte addresses, and
the segment selector is always produced as 0. At some future time we
might need to allow targets to override this.
gas/ChangeLog:
* as.c (parse_args): Parse --gdwarf-cie-version option.
(flag_dwarf_cie_version): New variable.
* as.h (flag_dwarf_cie_version): Declare.
* dw2gencfi.c (output_cie): Switch from DW_CIE_VERSION to
flag_dwarf_cie_version.
* doc/as.texi (Overview): Document --gdwarf-cie-version.
* NEWS: Likewise.
* testsuite/gas/cfi/cfi.exp: Add new tests.
* testsuite/gas/cfi/cie-version-0.d: New file.
* testsuite/gas/cfi/cie-version-1.d: New file.
* testsuite/gas/cfi/cie-version-2.d: New file.
* testsuite/gas/cfi/cie-version-3.d: New file.
* testsuite/gas/cfi/cie-version-4.d: New file.
* testsuite/gas/cfi/cie-version.s: New file.
include/ChangeLog:
* dwarf2.h (DW_CIE_VERSION): Delete.
Change-Id: I9de19461aeb8332b5a57bbfe802953d0725a7ae8
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If we happen to get the fixed and variable parts of the advance_loc
in different frags, bad things happen when subtracting one from a
fr_fix of zero.
PR 25125
* dw2gencfi.c (output_cfi_insn): Don't allow DW_CFA_advance_loc4
to be placed in a different frag to the rs_cfa.
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These can be generated when multiple cfi directives are emitted for an
instruction and the insn frag is closed off between directives, as
happens when listings are enabled. No doubt the advance_loc of zero
could be avoided by backtracking over frags in dw2gencfi.c before
calling cfi_add_advance_loc, but that seems like more work than
cleaning up afterwards as this patch does.
Noticed when looking at the testcase in PR25125.
PR 25125
* dw2gencfi.c (output_cfi_insn): Don't output DW_CFA_advance_loc+0.
* ehopt.c (eh_frame_estimate_size_before_relax): Return -1 for
an advance_loc of zero.
(eh_frame_relax_frag): Translate fr_subtype of 7 to size -1.
(eh_frame_convert_frag): Handle fr_subtype of 7. Abort on
unexpected fr_subtype.
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This large patch removes the unnecessary bfd parameter from various
bfd section macros and functions. The bfd is hardly ever used and if
needed for the bfd_set_section_* or bfd_rename_section functions can
be found via section->owner except for the com, und, abs, and ind
std_section special sections. Those sections shouldn't be modified
anyway.
The patch also removes various bfd_get_section_<field> macros,
replacing their use with bfd_section_<field>, and adds
bfd_set_section_lma. I've also fixed a minor bug in gas where
compressed section renaming was done directly rather than calling
bfd_rename_section. This would have broken bfd_get_section_by_name
and similar functions, but that hardly mattered at such a late stage
in gas processing.
bfd/
* bfd-in.h (bfd_get_section_name, bfd_get_section_vma),
(bfd_get_section_lma, bfd_get_section_alignment),
(bfd_get_section_size, bfd_get_section_flags),
(bfd_get_section_userdata): Delete.
(bfd_section_name, bfd_section_size, bfd_section_vma),
(bfd_section_lma, bfd_section_alignment): Lose bfd parameter.
(bfd_section_flags, bfd_section_userdata): New.
(bfd_is_com_section): Rename parameter.
* section.c (bfd_set_section_userdata, bfd_set_section_vma),
(bfd_set_section_alignment, bfd_set_section_flags, bfd_rename_section),
(bfd_set_section_size): Delete bfd parameter, rename section parameter.
(bfd_set_section_lma): New.
* bfd-in2.h: Regenerate.
* mach-o.c (bfd_mach_o_init_section_from_mach_o): Delete bfd param,
update callers.
* aoutx.h, * bfd.c, * coff-alpha.c, * coff-arm.c, * coff-mips.c,
* coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c,
* compress.c, * ecoff.c, * elf-eh-frame.c, * elf-hppa.h,
* elf-ifunc.c, * elf-m10200.c, * elf-m10300.c, * elf-properties.c,
* elf-s390-common.c, * elf-vxworks.c, * elf.c, * elf32-arc.c,
* elf32-arm.c, * elf32-avr.c, * elf32-bfin.c, * elf32-cr16.c,
* elf32-cr16c.c, * elf32-cris.c, * elf32-crx.c, * elf32-csky.c,
* elf32-d10v.c, * elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c,
* elf32-ft32.c, * elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c,
* elf32-ip2k.c, * elf32-iq2000.c, * elf32-lm32.c, * elf32-m32c.c,
* elf32-m32r.c, * elf32-m68hc1x.c, * elf32-m68k.c, * elf32-mcore.c,
* elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c,
* elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c,
* elf32-nios2.c, * elf32-or1k.c, * elf32-ppc.c, * elf32-pru.c,
* elf32-rl78.c, * elf32-rx.c, * elf32-s390.c, * elf32-score.c,
* elf32-score7.c, * elf32-sh.c, * elf32-spu.c, * elf32-tic6x.c,
* elf32-tilepro.c, * elf32-v850.c, * elf32-vax.c, * elf32-visium.c,
* elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c,
* elf64-bpf.c, * elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mmix.c,
* elf64-ppc.c, * elf64-s390.c, * elf64-sparc.c, * elf64-x86-64.c,
* elflink.c, * elfnn-aarch64.c, * elfnn-ia64.c, * elfnn-riscv.c,
* elfxx-aarch64.c, * elfxx-mips.c, * elfxx-sparc.c,
* elfxx-tilegx.c, * elfxx-x86.c, * i386msdos.c, * linker.c,
* mach-o.c, * mmo.c, * opncls.c, * pdp11.c, * pei-x86_64.c,
* peicode.h, * reloc.c, * section.c, * syms.c, * vms-alpha.c,
* xcofflink.c: Update throughout for bfd section macro and function
changes.
binutils/
* addr2line.c, * bucomm.c, * coffgrok.c, * dlltool.c, * nm.c,
* objcopy.c, * objdump.c, * od-elf32_avr.c, * od-macho.c,
* od-xcoff.c, * prdbg.c, * rdcoff.c, * rddbg.c, * rescoff.c,
* resres.c, * size.c, * srconv.c, * strings.c, * windmc.c: Update
throughout for bfd section macro and function changes.
gas/
* as.c, * as.h, * dw2gencfi.c, * dwarf2dbg.c, * ecoff.c,
* read.c, * stabs.c, * subsegs.c, * subsegs.h, * write.c,
* config/obj-coff-seh.c, * config/obj-coff.c, * config/obj-ecoff.c,
* config/obj-elf.c, * config/obj-macho.c, * config/obj-som.c,
* config/tc-aarch64.c, * config/tc-alpha.c, * config/tc-arc.c,
* config/tc-arm.c, * config/tc-avr.c, * config/tc-bfin.c,
* config/tc-bpf.c, * config/tc-d10v.c, * config/tc-d30v.c,
* config/tc-epiphany.c, * config/tc-fr30.c, * config/tc-frv.c,
* config/tc-h8300.c, * config/tc-hppa.c, * config/tc-i386.c,
* config/tc-ia64.c, * config/tc-ip2k.c, * config/tc-iq2000.c,
* config/tc-lm32.c, * config/tc-m32c.c, * config/tc-m32r.c,
* config/tc-m68hc11.c, * config/tc-mep.c, * config/tc-microblaze.c,
* config/tc-mips.c, * config/tc-mmix.c, * config/tc-mn10200.c,
* config/tc-mn10300.c, * config/tc-msp430.c, * config/tc-mt.c,
* config/tc-nds32.c, * config/tc-or1k.c, * config/tc-ppc.c,
* config/tc-pru.c, * config/tc-rl78.c, * config/tc-rx.c,
* config/tc-s12z.c, * config/tc-s390.c, * config/tc-score.c,
* config/tc-score7.c, * config/tc-sh.c, * config/tc-sparc.c,
* config/tc-spu.c, * config/tc-tic4x.c, * config/tc-tic54x.c,
* config/tc-tic6x.c, * config/tc-tilegx.c, * config/tc-tilepro.c,
* config/tc-v850.c, * config/tc-visium.c, * config/tc-wasm32.c,
* config/tc-xc16x.c, * config/tc-xgate.c, * config/tc-xstormy16.c,
* config/tc-xtensa.c, * config/tc-z8k.c: Update throughout for
bfd section macro and function changes.
* write.c (compress_debug): Use bfd_rename_section.
gdb/
* aarch64-linux-tdep.c, * arm-tdep.c, * auto-load.c,
* coff-pe-read.c, * coffread.c, * corelow.c, * dbxread.c,
* dicos-tdep.c, * dwarf2-frame.c, * dwarf2read.c, * elfread.c,
* exec.c, * fbsd-tdep.c, * gcore.c, * gdb_bfd.c, * gdb_bfd.h,
* hppa-tdep.c, * i386-cygwin-tdep.c, * i386-fbsd-tdep.c,
* i386-linux-tdep.c, * jit.c, * linux-tdep.c, * machoread.c,
* maint.c, * mdebugread.c, * minidebug.c, * mips-linux-tdep.c,
* mips-sde-tdep.c, * mips-tdep.c, * mipsread.c, * nto-tdep.c,
* objfiles.c, * objfiles.h, * osabi.c, * ppc-linux-tdep.c,
* ppc64-tdep.c, * record-btrace.c, * record-full.c, * remote.c,
* rs6000-aix-tdep.c, * rs6000-tdep.c, * s390-linux-tdep.c,
* s390-tdep.c, * solib-aix.c, * solib-dsbt.c, * solib-frv.c,
* solib-spu.c, * solib-svr4.c, * solib-target.c,
* spu-linux-nat.c, * spu-tdep.c, * symfile-mem.c, * symfile.c,
* symmisc.c, * symtab.c, * target.c, * windows-nat.c,
* xcoffread.c, * cli/cli-dump.c, * compile/compile-object-load.c,
* mi/mi-interp.c: Update throughout for bfd section macro and
function changes.
* gcore (gcore_create_callback): Use bfd_set_section_lma.
* spu-tdep.c (spu_overlay_new_objfile): Likewise.
gprof/
* corefile.c, * symtab.c: Update throughout for bfd section
macro and function changes.
ld/
* ldcref.c, * ldctor.c, * ldelf.c, * ldlang.c, * pe-dll.c,
* emultempl/aarch64elf.em, * emultempl/aix.em,
* emultempl/armcoff.em, * emultempl/armelf.em,
* emultempl/cr16elf.em, * emultempl/cskyelf.em,
* emultempl/m68hc1xelf.em, * emultempl/m68kelf.em,
* emultempl/mipself.em, * emultempl/mmix-elfnmmo.em,
* emultempl/mmo.em, * emultempl/msp430.em,
* emultempl/nios2elf.em, * emultempl/pe.em, * emultempl/pep.em,
* emultempl/ppc64elf.em, * emultempl/xtensaelf.em: Update
throughout for bfd section macro and function changes.
libctf/
* ctf-open-bfd.c: Update throughout for bfd section macro changes.
opcodes/
* arc-ext.c: Update throughout for bfd section macro changes.
sim/
* common/sim-load.c, * common/sim-utils.c, * cris/sim-if.c,
* erc32/func.c, * lm32/sim-if.c, * m32c/load.c, * m32c/trace.c,
* m68hc11/interp.c, * ppc/hw_htab.c, * ppc/hw_init.c,
* rl78/load.c, * rl78/trace.c, * rx/gdb-if.c, * rx/load.c,
* rx/trace.c: Update throughout for bfd section macro changes.
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with address sanitization enabled.
PR 24538
gas * macro.c (get_any_string): Increase size of buffer used to hold
decimal value of expression result.
* dw2gencfi.c (get_debugseg_name): Handle an empty name.
* dwarf2dbg.c (get_filenum): Catch integer wraparound when
extending allocate file array.
(dwarf2_directive_filename): Add extra checks of the computed file
number.
* config/tc-arm.c (arm_tc_equal_in_insn): Insert copy of name into
warning hash table.
(s_arm_eabi_attribute): Check for obj_elf_vendor_attribute
returning -1.
* config/tc-i386.c (i386_output_nops): Catch an attempt to
generate nops of negative lengths.
* as.h (MAX_LITTLENUMS): Move definition to here from...
* config/atof-ieee.c: ...here.
* config/tc-aarch64.c: ...here.
* config/tc-arc.c: ...here.
* config/tc-arm.c: ...here.
* config/tc-epiphany.c: ...here.
* config/tc-i386.c: ...here.
* config/tc-ia64.c: ...here. (And correct the value).
* config/tc-m32c.c: ...here.
* config/tc-m32r.c: ...here.
* config/tc-metag.c: ...here.
* config/tc-microblaze.c: ...here.
* config/tc-nds32.c: ...here.
* config/tc-or1k.c: ...here.
* config/tc-score.c: ...here.
* config/tc-score7.c: ...here.
* config/tc-tic4x.c: ...here.
* config/tc-tilegx.c: ...here.
* config/tc-tilepro.c: ...here.
* config/tc-visium.c: ...here.
* config/tc-sh.c (md_assemble): Add check for an instruction with
no opcodes.
* config/tc-mips.c (mips_lookup_insn): Add check for very short
instruction name.
* config/tc-tic54x.c: Use unsigned chars to access is_end_of_line
array.
(tic54x_start_line_hook): Check for an empty line.
(next_line_shows_parallel): Do not walk off the end of the string.
(tic54x_macro_start): Check for too much macro nesting.
(tic54x_start_label): Add label_start parameter. Use this
parameter to check the first character of the label.
* config/tc-tic54x.h (TC_START_LABEL_WITHOUT_COLON): Pass
line_start variable to tic54x_start_label.
PR 24538
opcodes * ia64-opc.c (ia64_find_matching_opcode): Check for reaching the
end of the table prematurely.
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* dw2gencfi.c (output_cie): Add missing semicolon in last
change.
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This commit moves all aarch64-specific code to deal with CIE structure
introduced in 3a67e1a6b4430374f3073e51bb19347d4c421cfe from
target-independent files to the aarch64 backend.
2018-12-13 Sam Tebbs <sam.tebbs@arm.com>
binutils/
* dwarf.c (read_cie): Add check for 'B'.
gas/
* config/tc-aarch64.h (enum pointer_auth_key,
tc_fde_entry_extras, tc_cie_entry_extras, tc_fde_entry_init_extra,
tc_output_cie_extra, tc_cie_fde_equivalent_extra,
tc_cie_entry_init_extra): Define.
* dw2gencfi.c (struct cie_entry): Add tc_cie_entry_extras invocation.
(alloc_fde_entry, select_cie_for_fde): Add tc_fde_entry_init_extra
invocation.
(output_cie): Add tc_output_cie_extra invocation.
(select_cie_for_fde): Add tc_cie_fde_equivalent_extra invocation.
* dw2gencfi.h (enum pointer_auth_key): Move to config/tc-aarch64.h.
(struct fde_entry): Add tc_fde_entry_extras invocation
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Armv8.3-A has another key used in pointer authentication called the
B-key (other than the A-key that is already supported). In order for
stack unwinders to work it is necessary to be able to identify frames
that have been signed with the B-key rather than the A-key and it was
felt that keeping this as an augmentation character in the CIE was the
best bet. The DWARF extensions for ARM therefore propose to add a new
augmentation character 'B' to the CIE augmentation string and the
corresponding cfi directive ".cfi_b_key_frame". I've made the relevant
changes to GAS and LD to add support for B-key unwinding, which required
modifying LD to check for 'B' in the augmentation string, adding the
".cfi_b_key_frame" directive to GAS and adding a "pauth_key" field to
GAS's fde_entry and cie_entry structs.
The pointer authentication instructions will behave as NOPs on
architectures that don't support them, and so a check for the
architecture being assembled for is not necessary since there will be no
behavioural difference between augmentation strings with and without the
'B' character on such architectures.
2018-12-05 Sam Tebbs <sam.tebbs@arm.com>
bfd/
* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Add check for 'B'.
gas/
* dw2gencfi.c (struct cie_entry): Add tc_cie_entry_extras invocation.
(alloc_fde_entry): Add tc_fde_entry_init_extra invocation.
(output_cie): Add tc_output_cie_extra invocation.
(select_cie_for_fde): Add tc_cie_fde_equivalent_extra and
tc_cie_entry_init_extra invocation.
(frch_cfi_data, cfa_save_data): Move to dwgencfi.h.
* config/tc-aarch64.c (s_aarch64_cfi_b_key_frame): Declare.
(md_pseudo_table): Add "cfi_b_key_frame".
* config/tc-aarch64.h (tc_fde_entry_extras, tc_cie_entry_extras,
tc_fde_entry_init_extra, tc_output_cie_extra,
tc_cie_fde_equivalent_extra, tc_cie_entry_init_extra): Define.
* dw2gencfi.h (struct fde_entry): Add tc_fde_entry_extras invocation.
(pointer_auth_key): Define.
(frch_cfi_data, cfa_save_data): Move from dwgencfi.c.
* doc/c-aarch64.texi (.cfi_b_key_frame): Add documentation.
* testsuite/gas/aarch64/(pac_ab_key.d, pac_ab_key.s): New file.
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PR 23939
* dw2gencfi.c (dot_cfi_label): Check frch_cfi_data is non-NULL
before use.
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Fix fallout when using gcc-4.
* dw2gencfi.c (emit_expr_encoded, output_fde): Warning fixes.
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Add asserts that reloc size matches encoding size, and tidy.
* dw2gencfi.c (encoding_size): Return unsigned int.
(emit_expr_encoded): Assert size matches reloc bitsize.
(output_fde): Use unsigned for offset_size and addr_size. Set
addr_size earlier and use in place of constant 4 and uses of
DWARF2_FDE_RELOC_SIZE. Assert it matches reloc bitsize.
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* dw2gencfi.c: Wrap overlong lines. Add parens for emacs
auto reformat. Formatting and whitespace fixes.
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The .cfi_sections directive can be safely used multiple times
with different sections named at any time unless the compact form
of exception handling is requested after CFI information has
been emitted. Only the compact form of CFI information changes
the way in which CFI is generated and therefore cannot be
retrospectively requested after generating CFI information.
gas/
PR gas/20648
* dw2gencfi.c (dot_cfi_sections): Refine the check for
inconsistent .cfi_sections to only consider compact vs non
compact forms.
* testsuite/gas/cfi/cfi-common-9.d: New file.
* testsuite/gas/cfi/cfi-common-9.s: New file.
* testsuite/gas/cfi/cfi.exp: Run new test.
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Comment changes.
bfd/
* coff-h8300.c: Spell fall through comments consistently.
* coffgen.c: Likewise.
* elf32-hppa.c: Likewise.
* elf32-ppc.c: Likewise.
* elf32-score.c: Likewise.
* elf32-score7.c: Likewise.
* elf64-ppc.c: Likewise.
* elfxx-aarch64.c: Likewise.
* elfxx-mips.c: Likewise.
* cpu-ns32k.c: Add missing fall through comments.
* elf-m10300.c: Likewise.
* elf32-arm.c: Likewise.
* elf32-avr.c: Likewise.
* elf32-bfin.c: Likewise.
* elf32-frv.c: Likewise.
* elf32-i386.c: Likewise.
* elf32-microblaze.c: Likewise.
* elf32-nds32.c: Likewise.
* elf32-ppc.c: Likewise.
* elf32-rl78.c: Likewise.
* elf32-rx.c: Likewise.
* elf32-s390.c: Likewise.
* elf32-sh.c: Likewise.
* elf32-tic6x.c: Likewise.
* elf64-ia64-vms.c: Likewise.
* elf64-ppc.c: Likewise.
* elf64-s390.c: Likewise.
* elf64-x86-64.c: Likewise.
* elflink.c: Likewise.
* elfnn-aarch64.c: Likewise.
* elfnn-ia64.c: Likewise.
* ieee.c: Likewise.
* oasys.c: Likewise.
* pdp11.c: Likewise.
* srec.c: Likewise.
* versados.c: Likewise.
opcodes/
* aarch64-opc.c: Spell fall through comments consistently.
* i386-dis.c: Likewise.
* aarch64-dis.c: Add missing fall through comments.
* aarch64-opc.c: Likewise.
* arc-dis.c: Likewise.
* arm-dis.c: Likewise.
* i386-dis.c: Likewise.
* m68k-dis.c: Likewise.
* mep-asm.c: Likewise.
* ns32k-dis.c: Likewise.
* sh-dis.c: Likewise.
* tic4x-dis.c: Likewise.
* tic6x-dis.c: Likewise.
* vax-dis.c: Likewise.
binutils/
* dlltool.c: Spell fall through comments consistently.
* objcopy.c: Likewise.
* readelf.c: Likewise.
* dwarf.c: Add missing fall through comments.
* elfcomm.c: Likewise.
* sysinfo.y: Likewise.
* readelf.c: Likewise. Also remove extraneous comments.
gas/
* app.c: Add missing fall through comments.
* dw2gencfi.c: Likewise.
* expr.c: Likewise.
* config/tc-alpha.c: Likewise.
* config/tc-arc.c: Likewise.
* config/tc-arm.c: Likewise.
* config/tc-cr16.c: Likewise.
* config/tc-crx.c: Likewise.
* config/tc-dlx.c: Likewise.
* config/tc-h8300.c: Likewise.
* config/tc-hppa.c: Likewise.
* config/tc-i370.c: Likewise.
* config/tc-i386.c: Likewise.
* config/tc-i960.c: Likewise.
* config/tc-ia64.c: Likewise.
* config/tc-m68hc11.c: Likewise.
* config/tc-m68k.c: Likewise.
* config/tc-mep.c: Likewise.
* config/tc-metag.c: Likewise.
* config/tc-microblaze.c: Likewise.
* config/tc-mips.c: Likewise.
* config/tc-ns32k.c: Likewise.
* config/tc-rx.c: Likewise.
* config/tc-score.c: Likewise.
* config/tc-score7.c: Likewise.
* config/tc-sh.c: Likewise.
* config/tc-tic4x.c: Likewise.
* config/tc-vax.c: Likewise.
* config/tc-xstormy16.c: Likewise.
* config/tc-z80.c: Likewise.
* config/tc-z8k.c: Likewise.
* config/obj-elf.c: Likewise.
* config/tc-i386.c: Likewise.
* depend.c: Spell fall through comments consistently.
* config/tc-arm.c: Likewise.
* config/tc-d10v.c: Likewise.
* config/tc-i960.c: Likewise.
* config/tc-ia64.c: Likewise.
* config/tc-m68k.c: Likewise.
* config/tc-mcore.c: Likewise.
* config/tc-mep.c: Likewise.
* config/tc-ns32k.c: Likewise.
* config/tc-visium.c: Likewise.
* config/tc-xstormy16.c: Likewise.
* config/tc-z8k.c: Likewise.
gprof/
* gprof.c: Add missing fall through comments.
ld/
* lexsup.c: Spell fall through comments consistently and add
missing fall through comments.
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This patch adds support for .cfi_val_offset GAS pseudo command which
maps to DW_CFA_val_offset and DW_CFA_val_offset_sf.
gas/ChangeLog:
2016-09-29 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* doc/as.texinfo: Add docu for .cfi_val_offset.
* dw2gencfi.c (cfi_add_CFA_val_offset): New function.
(dot_cfi): Add case for DW_CFA_val_offset.
(output_cfi_insn): Likewise.
(cfi_pseudo_table): Add entry for cfi_val_offset.
* dw2gencfi.h: Add prototype for cfi_add_CFA_val_offset.
* testsuite/gas/cfi/cfi-common-8.d: New test.
* testsuite/gas/cfi/cfi-common-8.s: New test.
* testsuite/gas/cfi/cfi.exp: Run cfi-common-8 testcase.
binutils/ChangeLog:
2016-09-29 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* dwarf.c (display_debug_frames): Adjust output line.
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Its a bit shorter and simpler than raw xmalloc.
gas/ChangeLog:
2016-05-13 Trevor Saunders <tbsaunde+binutils@tbsaunde.org>
* app.c (app_push): Use XNEW and related macros.
* as.c (parse_args): Likewise.
* cgen.c (make_right_shifted_expr): Likewise.
(gas_cgen_tc_gen_reloc): Likewise.
* config/bfin-defs.h: Likewise.
* config/bfin-parse.y: Likewise.
* config/obj-coff.c (stack_init): Likewise.
(stack_push): Likewise.
(coff_obj_symbol_new_hook): Likewise.
(coff_obj_symbol_clone_hook): Likewise.
(add_lineno): Likewise.
(coff_frob_symbol): Likewise.
* config/obj-elf.c (obj_elf_section_name): Likewise.
(build_group_lists): Likewise.
* config/obj-evax.c (evax_symbol_new_hook): Likewise.
* config/obj-macho.c (obj_mach_o_indirect_symbol): Likewise.
* config/tc-aarch64.c (insert_reg_alias): Likewise.
(find_or_make_literal_pool): Likewise.
(add_to_lit_pool): Likewise.
(fill_instruction_hash_table): Likewise.
* config/tc-alpha.c (load_expression): Likewise.
(emit_jsrjmp): Likewise.
(s_alpha_ent): Likewise.
(s_alpha_end): Likewise.
(s_alpha_linkage): Likewise.
(md_begin): Likewise.
(tc_gen_reloc): Likewise.
* config/tc-arc.c (arc_insert_opcode): Likewise.
(arc_extcorereg): Likewise.
* config/tc-bfin.c: Likewise.
* config/tc-cr16.c: Likewise.
* config/tc-cris.c: Likewise.
* config/tc-crx.c (preprocess_reglist): Likewise.
* config/tc-d10v.c: Likewise.
* config/tc-frv.c (frv_insert_vliw_insn): Likewise.
(frv_tomcat_shuffle): Likewise.
* config/tc-h8300.c: Likewise.
* config/tc-i370.c (i370_macro): Likewise.
* config/tc-i386.c (lex_got): Likewise.
(md_parse_option): Likewise.
* config/tc-ia64.c (alloc_record): Likewise.
(set_imask): Likewise.
(save_prologue_count): Likewise.
(dot_proc): Likewise.
(dot_endp): Likewise.
(ia64_frob_label): Likewise.
(add_qp_imply): Likewise.
(add_qp_mutex): Likewise.
(mark_resource): Likewise.
(dot_alias): Likewise.
* config/tc-m68hc11.c: Likewise.
* config/tc-m68k.c (m68k_frob_label): Likewise.
(s_save): Likewise.
(mri_control_label): Likewise.
(push_mri_control): Likewise.
(build_mri_control_operand): Likewise.
(s_mri_else): Likewise.
(s_mri_break): Likewise.
(s_mri_next): Likewise.
(s_mri_for): Likewise.
(s_mri_endw): Likewise.
* config/tc-metag.c (create_mnemonic_htab): Likewise.
* config/tc-microblaze.c: Likewise.
* config/tc-mmix.c (s_loc): Likewise.
* config/tc-nds32.c (nds32_relax_hint): Likewise.
* config/tc-nios2.c (nios2_insn_reloc_new): Likewise.
* config/tc-rl78.c: Likewise.
* config/tc-rx.c (rx_include): Likewise.
* config/tc-sh.c: Likewise.
* config/tc-sh64.c (shmedia_frob_section_type): Likewise.
* config/tc-sparc.c: Likewise.
* config/tc-spu.c: Likewise.
* config/tc-tic6x.c (static tic6x_unwind_info *tic6x_get_unwind): Likewise.
(tic6x_start_unwind_section): Likewise.
* config/tc-tilegx.c: Likewise.
* config/tc-tilepro.c: Likewise.
* config/tc-v850.c: Likewise.
* config/tc-visium.c: Likewise.
* config/tc-xgate.c: Likewise.
* config/tc-xtensa.c (xtensa_translate_old_userreg_ops): Likewise.
(new_resource_table): Likewise.
(resize_resource_table): Likewise.
(xtensa_create_trampoline_frag): Likewise.
(xtensa_maybe_create_literal_pool_frag): Likewise.
(cache_literal_section): Likewise.
* config/xtensa-relax.c (append_transition): Likewise.
(append_condition): Likewise.
(append_value_condition): Likewise.
(append_constant_value_condition): Likewise.
(append_literal_op): Likewise.
(append_label_op): Likewise.
(append_constant_op): Likewise.
(append_field_op): Likewise.
(append_user_fn_field_op): Likewise.
(enter_opname_n): Likewise.
(enter_opname): Likewise.
(split_string): Likewise.
(parse_insn_templ): Likewise.
(clone_req_or_option_list): Likewise.
(clone_req_option_list): Likewise.
(parse_option_cond): Likewise.
(parse_insn_pattern): Likewise.
(parse_insn_repl): Likewise.
(build_transition): Likewise.
(build_transition_table): Likewise.
* dw2gencfi.c (alloc_fde_entry): Likewise.
(alloc_cfi_insn_data): Likewise.
(cfi_add_CFA_remember_state): Likewise.
(dot_cfi_escape): Likewise.
(dot_cfi_fde_data): Likewise.
(select_cie_for_fde): Likewise.
* dwarf2dbg.c (dwarf2_directive_loc): Likewise.
* ecoff.c (ecoff_add_bytes): Likewise.
(ecoff_build_debug): Likewise.
* input-scrub.c (input_scrub_push): Likewise.
(input_scrub_begin): Likewise.
(input_scrub_next_buffer): Likewise.
* itbl-ops.c (append_insns_as_macros): Likewise.
(alloc_entry): Likewise.
(alloc_field): Likewise.
* listing.c (listing_newline): Likewise.
(listing_listing): Likewise.
* macro.c (get_any_string): Likewise.
(delete_macro): Likewise.
* stabs.c (generate_asm_file): Likewise.
(stabs_generate_asm_lineno): Likewise.
* subsegs.c (subseg_change): Likewise.
(subseg_get): Likewise.
* symbols.c (define_dollar_label): Likewise.
(symbol_relc_make_sym): Likewise.
* write.c (write_relocs): Likewise.
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generation has not yet started.
PR gas/19614
* dw2gencfi.c (cfi_sections_set): Delay setting this variable
until it is actually used.
(cfi_set_sections): Set cfi_sections_set to true.
(dot_cfi_startproc): Likewise.
(dot_cfi_endproc): Likewise.
(dot_cfi_fde_data): Likewise.
(cfi_finish): Likewise.
(dot_cfi_sections): Do not set cfi_sections_set.
* doc/as.texinfo (.cfi_sections): Note that targets can provide
their own cfi section name. Also note that the directive can be
reissued provided that CFI generation has not started.
* testsuite/gas/mips/compact-eh-err2.s: Add .cfi_startproc and
.cfi_endproc directives so that the redefinition of .cfi_sections
will trigger the generation of the error message.
* testsuite/gas/mips/compact-eh-err2.l: Update expected line
number of error message.
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I've just noticed this further oversights of the original commit.
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gas PR gas/18581
* expr.c (get_symbol_end): Rename to get_symbol_name. Add a
return parameter pointing to the start of the symbol. Allow
symbol names enclosed in double quotes.
(restore_line_pointer): New function. Replace the NUL character
inserted into the input stream with the given character. If the
character was a double quote, advance the input pointer.
* expr.h (get_symbol_end): Delete.
(get_symbol_name): Add prototype.
(restore_line_pointer): Prototype.
* read.h (SKIP_WHITESPACE_AFTER_NAME): New macro.
* doc/as.texinfo (Symbol Intro): Document that symbol names can
now be enclosed in double quotes.
* cond.c (s_ifdef): Replace get_symbol_end with get_symbol_name.
Use restore_line_pointer to replace the NUL in the input stream.
Use SKIP_WHITESPACE_AFTER_NAME to skip past the end of a symbol.
Check for the use of double quoted symbol names.
* expr.c: Likewise.
* config/obj-aout.c: Likewise.
* config/obj-coff-seh.c: Likewise.
* config/obj-coff.c: Likewise.
* config/obj-elf.c: Likewise.
* config/obj-evax.c: Likewise.
* config/obj-macho.c: Likewise.
* config/obj-som.c: Likewise.
* config/tc-alpha.c: Likewise.
* config/tc-arc.c: Likewise.
* config/tc-arm.c: Likewise.
* config/tc-dlx.c: Likewise.
* config/tc-h8300.c: Likewise.
* config/tc-hppa.c: Likewise.
* config/tc-i370.c: Likewise.
* config/tc-i386-intel.c: Likewise.
* config/tc-i386.c: Likewise.
* config/tc-i960.c: Likewise.
* config/tc-ia64.c: Likewise.
* config/tc-iq2000.c: Likewise.
* config/tc-m32r.c: Likewise.
* config/tc-m68hc11.c: Likewise.
* config/tc-m68k.c: Likewise.
* config/tc-microblaze.c: Likewise.
* config/tc-mips.c: Likewise.
* config/tc-mmix.c: Likewise.
* config/tc-mn10200.c: Likewise.
* config/tc-mn10300.c: Likewise.
* config/tc-nios2.c: Likewise.
* config/tc-ppc.c: Likewise.
* config/tc-s390.c: Likewise.
* config/tc-score.c: Likewise.
* config/tc-score7.c: Likewise.
* config/tc-sparc.c: Likewise.
* config/tc-tic4x.c: Likewise.
* config/tc-tic54x.c: Likewise.
* config/tc-tic6x.c: Likewise.
* config/tc-tilegx.c: Likewise.
* config/tc-tilepro.c: Likewise.
* config/tc-v850.c: Likewise.
* config/tc-xtensa.c: Likewise.
* config/tc-z80.c: Likewise.
* dw2gencfi.c: Likewise.
* dwarf2dbgc.: Likewise.
* ecoff.c: Likewise.
* read.c: Likewise.
* stabs.c: Likewise.
tests PR gas/18581
* gas/all/byte.d: Disable this test. Quoted expressions
are now allowed in .byte directives.
* gas/all/quoted-sym-names.s: New test.
* gas/all/quoted-sym-names.d: Expected output.
* gas/all/gas.exp: Run the new test.
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The specification for the Compact EH format is available at:
https://github.com/MentorEmbedded/cxx-abi/blob/master/MIPSCompactEH.pdf
2015-05-28 Catherine Moore <clm@codesourcery.com>
Bernd Schmidt <bernds@codesourcery.com>
Paul Brook <paul@codesourcery.com>
bfd/
* bfd-in2.h: Regenerated.
* elf-bfd.h (DWARF2_EH_HDR, COMPACT_EH_HDR): Define.
(COMPACT_EH_CANT_UNWIND_OPCODE): Define.
(dwarf_eh_frame_hdr_info): Move dwarf-specific fields from
eh_frame_hdr_info.
(compact_eh_frame_hdr_info): Declare.
(eh_frame_hdr_info): Redeclare with union for dwarf-specific
fields and compact-eh fields.
(elf_backend_data): Add cant_unwind_opcode and compact_eh_encoding.
(bfd_elf_section_data): Add eh_frame_entry_field.
(elf_section_eh_frame_entry): Define.
(bfd_elf_parse_eh_frame_entries): Declare.
(_bfd_elf_parse_eh_frame_entry): Declare.
(_bfd_elf_end_eh_frame_parsing): Declare.
(_bfd_elf_write_section_eh_frame_entry): Declare.
(_bfd_elf_eh_frame_entry_present): Declare.
(_bfd_elf_section_for_symbol): Declare.
* elf-eh-frame.c (bfd_elf_discard_eh_frame_entry): New function.
(bfd_elf_record_eh_frame_entry): New function.
(_bfd_elf_parse_eh_frame_entry): New function.
(_bfd_elf_parse_eh_frame): Update hdr_info field references.
(cmp_eh_frame_hdr): New function.
(add_eh_frame_hdr_terminator): New function.
(_bfd_elf_end_eh_frame_parsing): New function.
(find_merged_cie): Update hdr_info field references.
(_bfd_elf_discard_section_eh_frame): Likewise.
(_bfd_elf_discard_section_eh_frame_hdr): Add Compact EH support.
(_bfd_elf_eh_frame_entry_present): New function.
(_bfd_elf_maybe_strip_eh_frame_hdr): Add Compact EH support.
(_bfd_elf_write_section_eh_frame_entry): New function.
(_bfd_elf_write_section_eh_frame): Update hdr_info field references.
(_bfd_elf_fixup_eh_frame_hdr): New function.
(write_compact_eh_frame_hdr): New function.
(write_dwarf_eh_frame_hdr): New function.
(_bfd_elf_write_section_eh_frame_hdr): Add Compact EH support.
* elflink.c (_bfd_elf_section_for_symbol): New function.
(elf_section_ignore_discarded_relocs): Add Compact EH support.
(elf_link_input_bfd): Likewise.
(bfd_elf_final_link): Likewise.
(_bfd_elf_gc_mark): Likewise.
(bfd_elf_parse_eh_frame_entries): New function.
(bfd_elf_gc_sections): Add Compact EH support.
(bfd_elf_discard_info): Likewise.
* elfxx-mips.c: Include dwarf2.h.
(_bfd_mips_elf_compact_eh_encoding): New function.
(_bfd_mips_elf_cant_unwind_opcode): New function.
* elfxx-mips.h (_bfd_mips_elf_compact_eh_encoding): Declare.
(_bfd_mips_elf_cant_unwind_opcode): Declare.
(elf_backend_compact_eh_encoding): Define.
(elf_backend_cant_unwind_opcode): Define.
* elfxx-target.h (elf_backend_compact_eh_encoding): Provide default.
(elf_backend_cant_unwind_opcode): Provide default.
(elf_backend_data elfNN_bed): Add elf_backend_compact_eh_encoding and
elf_backend_cant_unwind_opcode.
* section.c (SEC_INFO_TYPE_EH_FRAME_ENTRY): Add definition.
gas/
* config/tc-alpha.c (all_cfi_sections): Declare.
(s_alpha_ent): Initialize all_cfi_sections.
(alpha_elf_md_end): Invoke cfi_set_sections.
* config/tc-mips.c (md_apply_fix): Handle BFD_RELOC_NONE.
(s_ehword): Use BFD_RELOC_32_PCREL.
(mips_fix_adjustable): Handle BFD_RELOC_32_PCREL.
(mips_cfi_reloc_for_encoding): New function.
* tc-mips.h (DWARF2_FDE_RELOC_SIZE): Redefine.
(DWARF2_FDE_RELOC_ENCODING): Define.
(tc_cfi_reloc_for_encoding): Define.
(mips_cfi_reloc_for_encoding): Define.
(tc_compact_eh_opcode_stop): Define.
(tc_compact_eh_opcode_pad): Define.
* doc/as.texinfo: Document Compact EH extensions.
* doc/internals.texi: Likewise.
* dw2gencfi.c (EH_FRAME_LINKONCE): Redefine.
(tc_cfi_reloc_for_encoding): Provide default.
(compact_eh): Declare.
(emit_expr_encoded): New function.
(get_debugseg_name): Add Compact EH support.
(alloc_debugseg_item): Likewise.
(cfi_set_sections): New function.
(dot_cfi_fde_data): New function.
(dot_cfi_personality_id): New function.
(dot_cfi_inline_lsda): New function.
(cfi_pseudo_table): Add cfi_fde_data, cfi_personality_id,
and cfi_inline_lsda.
(dot_cfi_personality): Add Compact EH support.
(dot_cfi_lsda): Likewise.
(dot_cfi_sections): Likewise.
(dot_cfi_startproc): Likewise.
(get_cfi_seg): Likewise.
(output_compact_unwind_data): New function.
(output_cfi_insn): Add Compact EH support.
(output_cie): Likewise.
(output_fde): Likewise.
(cfi_finish): Likewise.
(cfi_emit_eh_header): New function.
(output_eh_header): New function.
* dw2gencfi.h (cfi_set_sections): Declare.
(SUPPORT_COMPACT_EH): Define.
(MULTIPLE_FRAME_SECTIONS): Define.
New enumeration to describe the Compact EH header format.
(fde_entry): Add new fields personality_id, eh_header_type, eh_data_size,
eh_data, eh_loc and sections.
(CFI_EMIT_eh_frame, CFI_EMIT_debug_frame, CFI_EMIT_target,
CFI_EMIT_eh_frame_compact): Define.
2015-05-22 Catherine Moore <clm@codesourcery.com>
Bernd Schmidt <bernds@codesourcery.com>
gas/testsuite/
* gas/mips/mips.exp: Run new tests.
* gas/mips/compact-eh-1.s: New file.
* gas/mips/compact-eh-2.s: New file.
* gas/mips/compact-eh-3.s: New file.
* gas/mips/compact-eh-4.s: New file.
* gas/mips/compact-eh-5.s: New file.
* gas/mips/compact-eh-6.s: New file.
* gas/mips/compact-eh-7.s: New file.
* gas/mips/compact-eh-eb-1.d: New file.
* gas/mips/compact-eh-eb-2.d: New file.
* gas/mips/compact-eh-eb-3.d: New file.
* gas/mips/compact-eh-eb-4.d: New file.
* gas/mips/compact-eh-eb-5.d: New file.
* gas/mips/compact-eh-eb-6.d: New file.
* gas/mips/compact-eh-eb-7.d: New file.
* gas/mips/compact-eh-el-1.d: New file.
* gas/mips/compact-eh-el-2.d: New file.
* gas/mips/compact-eh-el-3.d: New file.
* gas/mips/compact-eh-el-4.d: New file.
* gas/mips/compact-eh-el-5.d: New file.
* gas/mips/compact-eh-el-6.d: New file.
* gas/mips/compact-eh-el-7.d: New file.
* gas/mips/compact-eh-err1.l: New file.
* gas/mips/compact-eh-err1.s: New file.
* gas/mips/compact-eh-err2.l: New file.
* gas/mips/compact-eh-err2.s: New file.
2015-05-22 Catherine Moore <clm@codesourcery.com>
include/
* bfdlink.h: Rename eh_frame_hdr to eh_frame_hdr_type.
2015-05-22 Catherine Moore <clm@codesourcery.com>
Paul Brook <paul@codesourcery.com>
ld/
* emultempl/elf32.em (gld${EMULATION_NAME}_after_open):
Add Compact EH support.
* scripttempl/elf.sc: Handle .eh_frame_entry and .gnu_extab
sections.
2015-05-22 Catherine Moore <clm@codesourcery.com>
ld/testsuite/
* ld-mips-elf/compact-eh.ld: New linker script.
* ld-mips-elf/compact-eh1.d: New.
* ld-mips-elf/compact-eh1.s: New.
* ld-mips-elf/compact-eh1a.s: New.
* ld-mips-elf/compact-eh1b.s: New.
* ld-mips-elf/compact-eh2.d: New.
* ld-mips-elf/compact-eh2.s: New.
* ld-mips-elf/compact-eh3.d: New.
* ld-mips-elf/compact-eh3.s: New.
* ld-mips-elf/compact-eh3a.s: New.
* ld-mips-elf/compact-eh4.d: New.
* ld-mips-elf/compact-eh5.d: New.
* ld-mips-elf/compact-eh6.d: New.
* ld-mips-elf/mips-elf.exp: Run new tests.
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While actually starting to use that new directive, I noticed a few
oversights of the original commit.
gas/
2015-02-06 Jan Beulich <jbeulich@suse.com>
* dw2gencfi.c (select_cie_for_fde): Also bail on CFI_label.
(cfi_change_reg_numbers): Also do nothing for CFI_label.
(cfi_pseudo_table): Also handle .cfi_label when not supporting
CFI directives.
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When runtime patching code (like e.g. done by the Linux kernel) there
may be cases where the set of stack frame alterations differs between
unpatched and patched code. Consequently the corresponding unwind data
needs patching too. Locating the right places within an FDE, however,
is rather cumbersome without a way to insert labels in the resulting
section. Hence this patch introduces a new directive, .cfi_label. Note
that with the way CFI data gets emitted currently (at the end of the
assembly process) this can't support local FB- and dollar-labels.
gas/
2015-01-12 Jan Beulich <jbeulich@suse.com>
* gas/dw2gencfi.c (cfi_add_label, dot_cfi_label): New.
(cfi_pseudo_table): Add "cfi_label".
(output_cfi_insn): Handle CFI_label.
(select_cie_for_fde): Als terminate CIE when encountering
CFI_label.
* dw2gencfi.h (cfi_add_label): Declare.
(struct cfi_insn_data): New member "sym_name".
(CFI_label): New.
* read.c (read_symbol_name): Drop "static".
* read.h (read_symbol_name): Declare.
gas/testsuite/
2015-01-12 Jan Beulich <jbeulich@suse.com>
gas/cfi/cfi-label.d, gas/cfi/cfi-label.s: New.
gas/cfi/cfi.exp: Run new tests.
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Jan Beulich
Indu Bhagat
Alan Modra
Jojo R
Martin Liska
Kyrylo Tkachov
Andrew Burgess
Nick Clifton
Jeff Law
Sam Tebbs
wu.heng
Matthew Fortune
Andreas Krebbel
Trevor Saunders
Jan Beulich
Catherine Moore
GitWeb