All symbols, sizes and relocations in this section are octets instead of
bytes. Required for DWARF debug sections as DWARF information is
organized in octets, not bytes.
bfd/
* section.c (struct bfd_section): New flag SEC_ELF_OCTETS.
* archures.c (bfd_octets_per_byte): New parameter sec.
If section is not NULL and SEC_ELF_OCTETS is set, one octet es
returned [ELF targets only].
* bfd.c (bfd_get_section_limit): Provide section parameter to
bfd_octets_per_byte.
* bfd-in2.h: regenerate.
* binary.c (binary_set_section_contents): Move call to
bfd_octets_per_byte into section loop. Provide section parameter
to bfd_octets_per_byte.
* coff-arm.c (coff_arm_reloc): Provide section parameter
to bfd_octets_per_byte.
* coff-i386.c (coff_i386_reloc): likewise.
* coff-mips.c (mips_reflo_reloc): likewise.
* coff-x86_64.c (coff_amd64_reloc): likewise.
* cofflink.c (_bfd_coff_link_input_bfd): likewise.
(_bfd_coff_reloc_link_order): likewise.
* elf.c (_bfd_elf_section_offset): likewise.
(_bfd_elf_make_section_from_shdr): likewise.
Set SEC_ELF_OCTETS for sections with names .gnu.build.attributes,
.debug*, .zdebug* and .note.gnu*.
* elf32-msp430.c (rl78_sym_diff_handler): Provide section parameter
to bfd_octets_per_byte.
* elf32-nds.c (nds32_elf_get_relocated_section_contents): likewise.
* elf32-ppc.c (ppc_elf_addr16_ha_reloc): likewise.
* elf32-pru.c (pru_elf32_do_ldi32_relocate): likewise.
* elf32-s12z.c (opru18_reloc): likewise.
* elf32-sh.c (sh_elf_reloc): likewise.
* elf32-spu.c (spu_elf_rel9): likewise.
* elf32-xtensa.c (bfd_elf_xtensa_reloc): likewise
* elf64-ppc.c (ppc64_elf_brtaken_reloc): likewise.
(ppc64_elf_addr16_ha_reloc): likewise.
(ppc64_elf_toc64_reloc): likewise.
* elflink.c (bfd_elf_final_link): likewise.
(bfd_elf_perform_complex_relocation): likewise.
(elf_fixup_link_order): likewise.
(elf_link_input_bfd): likewise.
(elf_link_sort_relocs): likewise.
(elf_reloc_link_order): likewise.
(resolve_section): likewise.
* linker.c (_bfd_generic_reloc_link_order): likewise.
(bfd_generic_define_common_symbol): likewise.
(default_data_link_order): likewise.
(default_indirect_link_order): likewise.
* srec.c (srec_set_section_contents): likewise.
(srec_write_section): likewise.
* syms.c (_bfd_stab_section_find_nearest_line): likewise.
* reloc.c (_bfd_final_link_relocate): likewise.
(bfd_generic_get_relocated_section_contents): likewise.
(bfd_install_relocation): likewise.
For section which have SEC_ELF_OCTETS set, multiply output_base
and output_offset with bfd_octets_per_byte.
(bfd_perform_relocation): likewise.
include/
* coff/ti.h (GET_SCNHDR_SIZE, PUT_SCNHDR_SIZE, GET_SCN_SCNLEN),
(PUT_SCN_SCNLEN): Adjust bfd_octets_per_byte calls.
binutils/
* objdump.c (disassemble_data): Provide section parameter to
bfd_octets_per_byte.
(dump_section): likewise
(dump_section_header): likewise. Show SEC_ELF_OCTETS flag if set.
gas/
* as.h: Define SEC_OCTETS as SEC_ELF_OCTETS if OBJ_ELF.
* dwarf2dbg.c: (dwarf2_finish): Set section flag SEC_OCTETS for
.debug_line, .debug_info, .debug_abbrev, .debug_aranges, .debug_str
and .debug_ranges sections.
* write.c (maybe_generate_build_notes): Set section flag
SEC_OCTETS for .gnu.build.attributes section.
* frags.c (frag_now_fix): Don't divide by OCTETS_PER_BYTE if
SEC_OCTETS is set.
* symbols.c (resolve_symbol_value): Likewise.
ld/
* ldexp.c (fold_name): Provide section parameter to
bfd_octets_per_byte.
* ldlang (init_opb): New argument s. Set opb_shift to 0 if
SEC_ELF_OCTETS for the current section is set.
(print_input_section): Pass current section to init_opb.
(print_data_statement,print_reloc_statement,
print_padding_statement): Likewise.
(lang_check_section_addresses): Call init_opb for each
section.
(lang_size_sections_1,lang_size_sections_1,
lang_do_assignments_1): Likewise.
(lang_process): Pass NULL to init_opb.
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
Hi,
This patch is part of a series that adds support for Armv8.6-A
(Matrix Multiply and BFloat16 extensions).
This patch contains some general refactoring of the atof_ieee
function, exposing a function that allows a higher level of control
over the format of IEEE-like floating point numbers.
This has been done in order to be able to add a directive for assembling
floating point literals in the bfloat16 format in the following patches.
Committed on behalf of Mihail Ionescu.
Tested on arm-none-eabi, arm-none-linux-gnueabihf, aarch64-none-elf
and aarch64-none-linux-gnuwith no issues.
gas/ChangeLog:
2019-10-21 Mihail Ionescu <mihail.ionescu@arm.com>
2019-10-21 Barnaby Wilks <barnaby.wilks@arm.com>
* as.h (atof_ieee_detail): Add prototype for atof_ieee_detail function.
(atof_ieee): Move some code into the atof_ieee_detail function.
(atof_ieee_detail): Add function that provides a higher level of control over generating
IEEE-like numbers.
Is it ok for trunk?
Regards,
Mihail
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.
gas * as.c (flag_generate_build_notes): New variable.
(show_usage): Add entry for --generate-missing-build-notes.
(parse_args): Parse --generate-missing-build-notes.
* as.h: Export flag_generate_build_notes.
* symbols.c (save_symbol_name): Ensure that the name parameter is
not NULL.
* write.c (create_obj_attrs_section): Reformat.
(create_note_reloc): New function - creates a relocation for a
field in a GNU Build attribute note.
(maybe_generate_build_notes): New function - created GNU Build
attribute notes if none are present in the output file.
(write_object_file): Call maybe_generate_build_notes.
* configure.ac (--enable-generate-build-notes): New option.
* NEWS: Announce the new feature.
* doc/as.textinfo: Document the new option.
* config.in: Regenerate.
* configure: Regenerate.
binutils* readelf.c (is_32bit_abs_reloc): Support R_PARISC_DIR32 as a
32-bit absolute reloc for the HPPA target.
* testsuite/binutils-all/note-5.d: New test.
* testsuite/binutils-all/note-5.s: Source file for new test.
* testsuite/binutils-all/objcopy.exp: Run new test.
Implement the '.nop SIZE[, CONTROL]' assembler directive, which emits
SIZE bytes filled with no-op instructions. SIZE is absolute expression.
The optional CONTROL byte controls how no-op instructions should be
generated. If the comma and @var{control} are omitted, CONTROL is
assumed to be zero.
For Intel 80386 and AMD x86-64 targets, CONTROL byte specifies the size
limit of a single no-op instruction. The valid values of CONTROL byte
are between 0 and 8 for 16-bit mode, between 0 and 10 for 32-bit mode,
between 0 and 11 for 64-bit mode. When 0 is used, the no-op size limit
is set to the maximum supported size.
2 new relax states, rs_space_nop and rs_fill_nop, are added to enum
_relax_state, which are similar to rs_space and rs_fill, respectively,
but they fill with no-op instructions, instead of a single byte. A
target backend must override the default md_generate_nops to generate
proper no-op instructions. Otherwise, an error of unimplemented .nop
directive will be issued whenever .nop directive is used.
* NEWS: Mention .nop directive.
* as.h (_relax_state): Add rs_space_nop and rs_fill_nop.
* read.c (potable): Add .nop.
(s_nop): New function.
* read.h (s_nop): New prototype.
* write.c (cvt_frag_to_fill): Handle rs_space_nop and
rs_fill_nop.
(md_generate_nops): New function.
(relax_segment): Likewise.
(write_contents): Use md_generate_nops for rs_fill_nop.
* config/tc-i386.c (alt64_11): New.
(alt64_patt): Likewise.
(md_convert_frag): Handle rs_space_nop.
(i386_output_nops): New function.
(i386_generate_nops): Likewise.
(i386_align_code): Call i386_output_nops.
* config/tc-i386.h (i386_generate_nops): New.
(md_generate_nops): Likewise.
* doc/as.texinfo: Document .nop directive.
* testsuite/gas/i386/i386.exp: Run .nop directive tests.
* testsuite/gas/i386/nop-1.d: New file.
* testsuite/gas/i386/nop-1.s: Likewise.
* testsuite/gas/i386/nop-2.d: Likewise.
* testsuite/gas/i386/nop-2.s: Likewise.
* testsuite/gas/i386/nop-3.d: Likewise.
* testsuite/gas/i386/nop-3.s: Likewise.
* testsuite/gas/i386/nop-4.d: Likewise.
* testsuite/gas/i386/nop-4.s: Likewise.
* testsuite/gas/i386/nop-5.d: Likewise.
* testsuite/gas/i386/nop-5.s: Likewise.
* testsuite/gas/i386/nop-6.d: Likewise.
* testsuite/gas/i386/nop-6.s: Likewise.
* testsuite/gas/i386/nop-bad-1.l: Likewise.
* testsuite/gas/i386/nop-bad-1.s: Likewise.
* testsuite/gas/i386/x86-64-nop-1.d: Likewise.
* testsuite/gas/i386/x86-64-nop-2.d: Likewise.
* testsuite/gas/i386/x86-64-nop-3.d: Likewise.
* testsuite/gas/i386/x86-64-nop-4.d: Likewise.
* testsuite/gas/i386/x86-64-nop-5.d: Likewise.
* testsuite/gas/i386/x86-64-nop-6.d: Likewise.
PR 21977
* listing.c (listing_newline): Use the name of the current
physical input file, rather than the current logical input file,
unless including high level source in the listing.
* input-scrub.c (as_where_physical): New function. Returns the
name of the current physical input file.
* as.h: Add prototype for as_where_physical.
PR gas/20247
* as.h (do_not_pad_sections_to_alignment): New global variable.
* as.c (show_usage): Add --no-pad-sections.
(parse_args): Likewise.
* write.c (size_seg): Skip padding the end of the section if
requested from the command line.
(SUB_SEGMENT_ALIGN): Likewise.
* doc/as.texinfo: Document the new option.
* NEWS: Mention the new feature.
* testsuite/gas/elf/section11.s: New test.
* testsuite/gas/elf/section11.d: New test driver.
* testsuite/gas/elf/elf.exp: Run the new test.
This name describes what the variable means slightly better, and the enum with
two values that is only used for this one variable is kind of silly.
gas/ChangeLog:
2016-03-25 Trevor Saunders <tbsaunde+binutils@tbsaunde.org>
* as.c (parse_args): Adjust.
* as.h (flag_size_check): Rename to flag_allow_nonconst_size.
* config/obj-elf.c (elf_frob_symbol): Adjust.
This patch adds the ability to automatically construct a section name
based on the prior section.
When gas is invoked with --sectname-subst, the occurrence of %S in a
section name will be substituted by the name of the current section. For
example:
.macro exception_code
.pushsection %S.exception
[exception code here]
.popsection
.endm
.text
[code]
exception_code
[...]
.section .init
[init code]
exception_code
[...]
The first and second exception_code invocations create the
.text.exception and the .init.exception sections respectively. This is
useful e.g. to discriminate between anciliary sections that are tied to
.init code and can be discarded at run time when initialization is over
vs anciliary sections tied to .text sections that need to stay resident.
* as.c (show_usage): Document --sectname-subst.
(parse_args): Add --sectname-subst.
* as.h (flag_sectname_subst): New.
* config/obj-elf.c (obj_elf_section_name): Add %S substitution.
* doc/as.texinfo: Document it.
This patch adds --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]
to ld for ELF targets to support generating compressed DWARF debug
sections. We always generate .zdebug_* section since section names have
been finalized and they can't be changed easily when compression is
being performed.
bfd/
* bfd-in.h (compressed_debug_section_type): New.
* compress.c (bfd_compress_section_contents): Add an argument
for linker write compression and always generate .zdebug_*
section when linking.
(bfd_init_section_compress_status): Pass FALSE to
bfd_compress_section_contents.
(bfd_compress_section): New function.
* elf.c (elf_fake_sections): For linking, set SEC_ELF_COMPRESS
on DWARF debug sections if COMPRESS_DEBUG is set and rename
section if COMPRESS_DEBUG_GABI_ZLIB isn't set.
(assign_file_positions_for_non_load_sections): Set sh_offset
to -1 if SEC_ELF_COMPRESS is set.
(assign_file_positions_except_relocs): Likwise.
(_bfd_elf_assign_file_positions_for_relocs): Renamed to ...
(_bfd_elf_assign_file_positions_for_non_load): This. Change
return time to bfd_boolean. Compress the section if
SEC_ELF_COMPRESS is set.
(_bfd_elf_write_object_contents): Updated.
(_bfd_elf_set_section_contents): Write section contents to
the buffer if SEC_ELF_COMPRESS is set.
* merge.c: Include "elf-bfd.h".
(sec_merge_emit): Add arguments for contents and offset. Write
to contents with offset if contents isn't NULL.
(_bfd_write_merged_section): Write section contents to the
buffer if SEC_ELF_COMPRESS is set. Pass contents and
output_offset to sec_merge_emit.
* elflink.c (bfd_elf_final_link): Allocate the buffer for
output section contents if SEC_ELF_COMPRESS is set.
* section.c (SEC_ELF_COMPRESS): New.
* bfd-in2.h: Regenerated.
gas/
* as.h (compressed_debug_section_type): Removed.
include/
* bfdlink.h (bfd_link_info): Add compress_debug.
ld/
* ld.texinfo: Document --compress-debug-sections=.
* ldmain.c (main): Set BFD_COMPRESS on output_bfd if
COMPRESS_DEBUG is set. Set BFD_COMPRESS_GABI on output_bfd
for COMPRESS_DEBUG_GABI_ZLIB.
* lexsup.c (elf_static_list_options): Add
--compress-debug-sections=.
* emultempl/elf32.em (OPTION_COMPRESS_DEBUG): New.
(xtra_long): Add "compress-debug-sections".
(gld${EMULATION_NAME}_handle_option): Handle
OPTION_COMPRESS_DEBUG.
ld/testsuite/
* ld-elf/compress.exp (build_tests): Add tests for
--compress-debug-sections=.
(run_tests): Likewise.
Add additonal tests for --compress-debug-sections=.
* ld-elf/gabiend.rt: New file.
* ld-elf/gabinormal.rt: Likewise.
* ld-elf/gnubegin.rS: Likewise.
* ld-elf/gnunormal.rS: Likewise.
* ld-elf/zlibbegin.rS: Likewise.
* ld-elf/zlibnormal.rS: Likewise.
This patch adds --compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}
options to gas and objcopy for ELF files. They control how DWARF debug
sections are compressed. --compress-debug-sections=none is equivalent to
--nocompress-debug-sections. --compress-debug-sections=zlib and
--compress-debug-sections=zlib-gnu are equivalent to
--compress-debug-sections. --compress-debug-sections=zlib-gabi compresses
DWARF debug sections with SHF_COMPRESSED from the ELF ABI. No linker
changes are required to support SHF_COMPRESSED.
bfd/
* archive.c (_bfd_get_elt_at_filepos): Also copy BFD_COMPRESS_GABI
bit.
* bfd.c (bfd::flags): Increase size to 18 bits.
(BFD_COMPRESS_GABI): New.
(BFD_FLAGS_SAVED): Add BFD_COMPRESS_GABI.
(BFD_FLAGS_FOR_BFD_USE_MASK): Likewise.
(bfd_update_compression_header): New fuction.
(bfd_check_compression_header): Likewise.
(bfd_get_compression_header_size): Likewise.
(bfd_is_section_compressed_with_header): Likewise.
* compress.c (MAX_COMPRESSION_HEADER_SIZE): New.
(bfd_compress_section_contents): Return the uncompressed size if
the full section contents is compressed successfully. Support
converting from/to .zdebug* sections.
(bfd_get_full_section_contents): Call
bfd_get_compression_header_size to get compression header size.
(bfd_is_section_compressed): Renamed to ...
(bfd_is_section_compressed_with_header): This. Add a pointer
argument to return compression header size.
(bfd_is_section_compressed): Use it.
(bfd_init_section_decompress_status): Call
bfd_get_compression_header_size to get compression header size.
Return FALSE if uncompressed section size is 0.
* elf.c (_bfd_elf_make_section_from_shdr): Support converting
from/to .zdebug* sections.
* bfd-in2.h: Regenerated.
binutils/
* objcopy.c (do_debug_sections): Add compress_zlib,
compress_gnu_zlib and compress_gabi_zlib.
(copy_options): Use optional_argument on compress-debug-sections.
(copy_usage): Update --compress-debug-sections.
(copy_file): Handle compress_zlib, compress_gnu_zlib and
compress_gabi_zlib.
(copy_main): Handle
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
* doc/binutils.texi: Document
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
binutils/testsuite/
* compress.exp: Add tests for
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
* binutils-all/dw2-3.rS: New file.
* binutils-all/dw2-3.rt: Likewise.
* binutils-all/libdw2-compressedgabi.out: Likewise.
gas/
* as.c (show_usage): Update --compress-debug-sections.
(std_longopts): Use optional_argument on compress-debug-sections.
(parse_args): Handle
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
* as.h (compressed_debug_section_type): New.
(flag_compress_debug): Change type to compressed_debug_section_type.
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
* write.c (compress_debug): Set BFD_COMPRESS_GABI for
--compress-debug-sections=zlib-gabi. Call
bfd_get_compression_header_size to get compression header size.
Don't rename section name for --compress-debug-sections=zlib-gabi.
* config/tc-i386.c (compressed_debug_section_type): Set to
COMPRESS_DEBUG_ZLIB.
* doc/as.texinfo: Document
--compress-debug-sections={none|zlib|zlib-gnu|zlib-gabi}.
gas/testsuite/
* gas/i386/dw2-compressed-1.d: New file.
* gas/i386/dw2-compressed-2.d: Likewise.
* gas/i386/dw2-compressed-3.d: Likewise.
* gas/i386/x86-64-dw2-compressed-2.d: Likewise.
* gas/i386/i386.exp: Run dw2-compressed-2, dw2-compressed-1,
dw2-compressed-3 and x86-64-dw2-compressed-2.
ld/testsuite/
* ld-elf/compress.exp: Add a test for
--compress-debug-sections=zlib-gabi.
(build_tests): Add 2 tests for --compress-debug-sections=zlib-gabi.
(run_tests): Likewise.
Verify linker output with zlib-gabi compressed debug input.
* ld-elf/compressed1a.d: New file.
* ld-elf/compressed1b.d: Likewise.
* ld-elf/compressed1c.d: Likewise.
* configure.in: Invoke ACX_HEADER_STRING.
* configure: Regenerate.
* config.in: Regenerate.
* sysdep.h: If STRINGS_WITH_STRING is defined then include both
string.h and strings.h.
* config/tc-m32c.c (OPTION_H_TICK_HEX): Define.
(md_longopts): Add support for it.
(md_parse_option): Likewise.
* doc/as.texinfo (Overview): Add new m32c options.
* doc/c-m32c.texi (M32C-Modifiers): Likewise
* as.h: (enable_h_tick_hex): New.
* app.c (enable_h_tick_hex): New.
(LEX_IS_H): New.
(do_scrub_begin): Mark 'H' and 'h' as special if enable_h_tick_hex.
(do_scrub_chars): If enable_h_tick_hex and 'h', check for H'00
style hex constants and convert the input stream to 0x00 style.
(do_scrub_chars): If a 'X style character constant is found after
a symbol character (like you're or X'00), warn the user.
* acinclude.m4 (BFD_BINARY_FOPEN): Import this function from bfd/aclocal.m4.
* configure.in: Run BFD_BINARY_FOPEN.
* configure: Regenerate.
* as.h: Look at USE_BINARY_FOPEN to decide which fopen-*.h header file to include.
