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2023-08-25gas/ELF: allow "inheriting" section attributes and typeJan Beulich1-0/+12
While --sectname-subst is nice, it isn't enough to e.g. mimic -f{function,data}-sections in assembly code, when such use is to be optional (e.g. dependent upon some configuration setting). Assign meaning to '+' and '-' as section attribute letters, allowing to inherit the prior section's attributes (and possibly type) along with adding or removing some. Note that documenting the interaction with '?' as undefined is a precautionary measure. While touching the function invocation, stop using |= on the result of obj_elf_parse_section_letters(): "attr" is firmly zero ahead of the call.
2023-08-16kvx: New port.Paul Iannetta1-0/+7
2023-08-05as: Fix typo in manualDavid Carew1-1/+1
The -D flag should enable "debugging"
2023-06-15GAS/doc: Correct Tag_GNU_MIPS_ABI_MSA attribute descriptionMaciej W. Rozycki1-3/+4
Rewrite the paragraph to match the style of Tag_GNU_MIPS_ABI_FP text immediately above, correcting grammar and formatting at the same time. gas/ * doc/as.texi (MIPS Attributes): Correct Tag_GNU_MIPS_ABI_MSA attribute description.
2023-05-19gas: maintain O_constant signedness in more casesJan Beulich1-10/+18
Unary '~' doesn't really produce an unsigned result. Neither does subtraction (unless taking operand values into consideration). And an abstract operator applied to two operands which aren't both unsigned can't be assumed to yield an unsigned result; exceptions are - shifts, where only signedness of the left hand operand matters, - comparisons, which - unlike unary '!' - produce signed results (they deliver 0 or ~0, as opposed to '!', which yields 0 or 1), - logical operators (yielding 0 or 1 and hence treated like unary '!'). While doing this (specifically while extending the all/quad testcase), update .quad and .8byte documentation: With 64-bit architectures now being common, it is highly inappropriate to state that these directives unconditionally require bignums.
2023-05-18PR11601, Solaris assembler compatibility doesn't workAlan Modra1-1/+1
Well, it doesn't work on x86 or ppc, which both have # starting comments anywhere on a line. I think it is therefore only useful on sparc. PR 11601 * config/obj-elf.c (obj_elf_section_word): Only compile for sparc. (obj_elf_section): Only support solaris .section directive on sparc. * doc/as.texi (Section): Mention that solaris .section directive is only supported for sparc.
2023-05-06gas: documents .gnu_attribute Tag_GNU_MIPS_ABI_MSAYunQiang Su1-0/+11
It is added since 2016 by Add support for .MIPS.abiflags and .gnu.attributes sections b52717c0e104eb603e8189c3c0d3658ef5d903f5 But never documented.
2023-03-14Fix assembler documentation regarding data directives.Nick Clifton1-1/+25
PR 30206 * doc/as.texi (Pseudo Ops): Document that data directives such as .byte and .int are not intended for encoding instructions.
2023-01-01Update year range in copyright notice of binutils filesAlan Modra1-3/+3
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.
2022-11-15gas: generate .sframe from CFI directivesIndu Bhagat1-5/+9
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.
2022-11-15gas: add new command line option --gsframeIndu Bhagat1-0/+6
When --gsframe is specified, the assembler will generate a .sframe section from the CFI directives in the assembly. ChangeLog: * gas/as.c (parse_args): Parse args and set flag_gen_sframe. * gas/as.h: Introduce skeleton for --gsframe. * gas/doc/as.texi: document --gsframe.
2022-09-28The help document of as misses some many optionsNick Clifton1-32/+64
PR 29623 * as.c (show_usage): Document the --dump-config, --gdwarf-cie-version, --hash-size, --multibyte-handling, and --reduce-memory-overheads options. * config/tc-i386.c (md_show_usage): Document the -O option. * doc/as.texi: Document the --dump-config, --emulation, --hash-size, and --reduce-memory-overheads options.
2022-09-26binutils, gdb: support zstd compressed debug sectionsFangrui Song1-4/+7
PR29397 PR29563: Add new configure option --with-zstd which defaults to auto. If pkgconfig/libzstd.pc is found, define HAVE_ZSTD and support zstd compressed debug sections for most tools. * bfd: for addr2line, objdump --dwarf, gdb, etc * gas: support --compress-debug-sections=zstd * ld: support ELFCOMPRESS_ZSTD input and --compress-debug-sections=zstd * objcopy: support ELFCOMPRESS_ZSTD input for --decompress-debug-sections and --compress-debug-sections=zstd * gdb: support ELFCOMPRESS_ZSTD input. The bfd change references zstd symbols, so gdb has to link against -lzstd in this patch. If zstd is not supported, ELFCOMPRESS_ZSTD input triggers an error. We can avoid HAVE_ZSTD if binutils-gdb imports zstd/ like zlib/, but this is too heavyweight, so don't do it for now. ``` % ld/ld-new a.o ld/ld-new: a.o: section .debug_abbrev is compressed with zstd, but BFD is not built with zstd support ... % ld/ld-new a.o --compress-debug-sections=zstd ld/ld-new: --compress-debug-sections=zstd: ld is not built with zstd support % binutils/objcopy --compress-debug-sections=zstd a.o b.o binutils/objcopy: --compress-debug-sections=zstd: binutils is not built with zstd support % binutils/objcopy b.o --decompress-debug-sections binutils/objcopy: zstd.o: section .debug_abbrev is compressed with zstd, but BFD is not built with zstd support ... ```
2022-08-09Another gas manual typo correction.Stepan Nemec1-1/+1
2022-08-09Fix typos in assembler documentation.Stepan Nemec1-10/+11
2022-04-07IBM zSystems: Add support for z16 as CPU name.Andreas Krebbel1-2/+2
So far z16 was identified as arch14. After the machine has been announced we can now add the real name. gas/ChangeLog: * config/tc-s390.c (s390_parse_cpu): Add z16 as alternate CPU name. * doc/as.texi: Add z16 and arch14 to CPU string list. * doc/c-s390.texi: Add z16 to CPU string list. opcodes/ChangeLog: * s390-mkopc.c (main): Enable z16 as CPU string in the opcode table.
2022-03-23gas: retain whitespace between stringsJan Beulich1-0/+21
Macro arguments may be separated by commas or just whitespace. Macro arguments may also be quoted (where one level of quotes is removed in the course of determining the values for the respective formal parameters). Furthermore this quote removal knows _two_ somewhat odd escaping mechanisms: One, apparently in existence forever, is that a pair of quotes counts as the escaping of a quote, with the pair being transformed to a single quote in the course of quote removal. The other (introduced by c06ae4f232e6) looks more usual on the surface in that it deals with \" sequences, but it _retains_ the escaping \. Hence only the former mechanism is suitable when the value to be used by the macro body is to contain a quote. Yet this results in ambiguity of what "a""b" is intended to mean; elsewhere (e.g. for .ascii) it represents two successive string literals. However, in any event is the above different from "a" "b": I don't think this can be viewed the same as "a""b" when processing macro arguments. Change the scrubber to retain such whitespace, by making the processing of strings more similar to that of symbols. And indeed this appears to make sense when taking into account that for quite a while gas has been supporting quoted symbol names. Taking a more general view, however, the change doesn't go quite far enough. There are further cases where significant whitespace is removed by the scrubber. The new testcase enumerates a few in its ".if 0" section. I'm afraid the only way that I see to deal with this would be to significantly simplify the scrubber, such that it wouldn't do much more than collapse sequences of unquoted whitespace into a single blank. To be honest problems in this area aren't really surprising when seeing that there's hardly any checking of .macro use throughout the testsuite (and in particular in the [relatively] generic tests under all/).
2022-02-11gas/doc: Fix "a true results" typoRichard Sandiford1-1/+1
2022-01-11gas/doc: mention quoted symbol namesJan Beulich1-1/+4
2022-01-02Update year range in copyright notice of binutils filesAlan Modra1-3/+3
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.
2021-11-18Add multibyte character warning option to the assembler.Nick Clifton1-4/+26
* as.c (parse_args): Add support for --multibyte-handling. * as.h (multibyte_handling): Declare. * app.c (scan_for_multibyte_characters): New function. (do_scrub_chars): Call the new function if multibyte warning is enabled. * input-scrub,c (input_scrub_next_buffer): Call the multibyte scanning function if multibyte warnings are enabled. * symbols.c (struct symbol_flags): Add multibyte_warned bit. (symbol_init): Call the multibyte scanning function if multibyte symbol warnings are enabled. (S_SET_SEGMENT): Likewise. * NEWS: Mention the new feature. * doc/as.texi: Document the new feature. * testsuite/gas/all/multibyte.s: New test source file. * testsuite/gas/all/multibyte1.d: New test driver file. * testsuite/gas/all/multibyte1.l: New test expected output. * testsuite/gas/all/multibyte2.d: New test driver file. * testsuite/gas/all/multibyte2.l: New test expected output. * testsuite/gas/all/gas.exp: Run the new tests.
2021-11-15Deal with full path in .file 0 directiveEric Botcazou1-7/+10
Gas uses the directory part, if present, of the .file 0 directive to set entry 0 of the directory table in DWARF 5, which represents the "current directory". Now Gas also uses the file part of the same directive to set entry 0 of the file table, which represents the "current compilation file". But the latter need not be located in the former so GCC will use a full path in the file part when it is passed a full path: gcc -c /full/path/test.c -save-temps yields: .file 0 "/current/directory" "/full/path/test.c" in the assembly file and: The Directory Table (offset 0x22, lines 2, columns 1): Entry Name 0 (indirect line string, offset: 0x25): /current/directory 1 (indirect line string, offset: 0x38): /full/path The File Name Table (offset 0x30, lines 2, columns 2): Entry Dir Name 0 0 (indirect line string, offset: 0x43): /full/path/test.c in the object file. Note the full path and the questionable Dir value in the 0 entry of the file table.
2021-10-24LoongArch gas supportliuzhensong1-0/+31
2021-10-22 Chenghua Xu <xuchenghua@loongson.cn> Zhensong Liu <liuzhensong@loongson.cn> Weinan Liu <liuweinan@loongson.cn> Xiaolin Tang <tangxiaolin@loongson.cn> gas/ * Makefile.am: Add LoongArch. * NEWS: Mention LoongArch support. * config/loongarch-lex-wrapper.c: New. * config/loongarch-lex.h: New. * config/loongarch-lex.l: New. * config/loongarch-parse.y: New. * config/tc-loongarch.c: New. * config/tc-loongarch.h: New. * configure.ac: Add LoongArch. * configure.tgt: Likewise. * doc/as.texi: Likewise. * doc/c-loongarch.texi: Likewise. * Makefile.in: Regenerate. * configure: Regenerate. * po/POTFILES.in: Regenerate. gas/testsuite/ * gas/all/gas.exp: Add LoongArch. * gas/elf/elf.exp: Likewise. * gas/loongarch/4opt_op.d: New. * gas/loongarch/4opt_op.s: Likewise. * gas/loongarch/fix_op.d: Likewise. * gas/loongarch/fix_op.s: Likewise. * gas/loongarch/float_op.d: Likewise. * gas/loongarch/float_op.s: Likewise. * gas/loongarch/imm_op.d: Likewise. * gas/loongarch/imm_op.s: Likewise. * gas/loongarch/jmp_op.d: Likewise. * gas/loongarch/jmp_op.s: Likewise. * gas/loongarch/load_store_op.d: Likewise. * gas/loongarch/load_store_op.s: Likewise. * gas/loongarch/loongarch.exp: Likewise. * gas/loongarch/macro_op.d: Likewise. * gas/loongarch/macro_op.s: Likewise. * gas/loongarch/nop.d: Likewise. * gas/loongarch/nop.s: Likewise. * gas/loongarch/privilege_op.d: Likewise. * gas/loongarch/privilege_op.s: Likewise. * gas/loongarch/syscall.d: Likewise. * gas/loongarch/syscall.s: Likewise. * lib/gas-defs.exp: Add LoongArch.
2021-08-11x86/ELF: fix .ds.x outputJan Beulich1-2/+2
The ELF psABI-s are quite clear here: On 32-bit the underlying data type is 12 bytes long (with 2 bytes of trailing padding), while on 64-bit it is 16 bytes long (with 6 bytes of padding). Make s_space() capable of handling 'x' (and 'p') type floating point being other than 12 bytes wide (also adjusting documentation). This requires duplicating the definition of X_PRECISION in the target speciifc header; the compiler would complain if this was out of sync with config/atof-ieee.c. Note that for now padding space doesn't get separated from actual storage, which means that things will work correctly only for little- endian cases, and which also means that by specifying large enough numbers padding space can be set to non-zero. Since the logic is needed for a single little-endian architecture only for now, I'm hoping that this might be acceptable for the time being; otherwise the change will become more intrusive. Note also that this brings the emitted data size of .ds.x vs .tfloat in line for non-ELF targets as well; the issue will be even more obvious when further taking into account a subsequent patch fixing .dc.x/.dcb.x (where output sizes currently differ depending on input format). Extend existing x86 testcases.
2021-05-07Add a generic .bss directive for ELF based targets.Nick Clifton1-0/+13
PR 3136 * config/obj-elf.c (elf_pseudo_table): Add entry for .bss. (obj_elf_bss): New function. Change to the .bss section. Support an optional subsection number. (obj_elf_change_section): Call obj_elf_section_change_hook. (obj_elf_section): Likewise. (obj_elf_data): Likewise. (obj_elf_text): Likewise. (obj_elf_struct): Likewise. (obj_elf_subsection): Likewise. (obj_elf_previous): Likewise. * config/obj-elf.h (obj_elf_bss): Prototype. * doc/as.texi (Bss): New node.
2021-01-14gas: make [248]byte directives available everywhereMike Frysinger1-7/+0
These aren't specific to ELF at all, and seem generally useful. So pull them out of the ELF backend and into the common core.
2021-01-06RISC-V: Mention -mbig-endian and -mlittle-endian in docMarcus Comstedt1-0/+1
gas/ * doc/as.texi: Add -mlittle-endian and -mbig-endian to docs. * doc/c-riscv.texi: Likewise.
2021-01-01Update year range in copyright notice of binutils filesAlan Modra1-3/+3
2020-11-18Re: Stop Gas from generating line info or address rangesAlan Modra1-5/+9
* doc/as.texi (.nop): Document optional size arg. * dwarf2dbg.c (dwarf2_gen_line_info_1): Only check SEC_ALLOC when ELF. Warn whenever dwarf line number information is ignored. * frags.c (frag_offset_ignore_align_p): New function. * frags.h (frag_offset_ignore_align_p): Declare. * read.c (s_nop): Extend to support optional size arg. * testsuite/gas/elf/dwarf2-20.d: Expect warnings, and exact range. * testsuite/gas/elf/dwarf2-20.s: Emit 16 bytes worth of nops. * testsuite/gas/m68hc11/indexed12.d: Expect warnings.
2020-11-18Support SHF_GNU_RETAIN ELF section flagJozef Lawrynowicz1-0/+3
The SHF_GNU_RETAIN section flag is an extension to the GNU ELF OSABI. It is defined as follows: ========================================================= Section Attribute Flags +-------------------------------------+ | Name | Value | +-------------------------------------+ | SHF_GNU_RETAIN | 0x200000 (1 << 21) | +-------------------------------------+ SHF_GNU_RETAIN The link editor should not garbage collect the section. ========================================================= The .section directive accepts the "R" flag, which indicates SHF_GNU_RETAIN should be applied to the section. There is not a direct mapping of SHF_GNU_RETAIN to the BFD section flag SEC_KEEP. Keeping these flags distinct allows SHF_GNU_RETAIN sections to be explicitly removed by placing them in /DISCARD/. bfd/ChangeLog: * elf-bfd.h (enum elf_gnu_osabi): Add elf_gnu_osabi_retain. (struct elf_obj_tdata): Increase has_gnu_osabi to 4 bits. * elf.c (_bfd_elf_make_section_from_shdr): Set elf_gnu_osabi_retain for SHF_GNU_RETAIN. (_bfd_elf_final_write_processing): Report if SHF_GNU_RETAIN is not supported by the OSABI. Adjust error messages. * elflink.c (elf_link_input_bfd): Copy enabled has_gnu_osabi bits from input BFD to output BFD. (bfd_elf_gc_sections): gc_mark the section if SHF_GNU_RETAIN is set. binutils/ChangeLog: * NEWS: Announce SHF_GNU_RETAIN support. * readelf.c (get_elf_section_flags): Handle SHF_GNU_RETAIN. Recognize SHF_GNU_RETAIN and SHF_GNU_MBIND only for supported OSABIs. * testsuite/binutils-all/readelf.exp: Run new tests. Don't run run_dump_test when there isn't an assembler available. * testsuite/lib/binutils-common.exp (supports_gnu_osabi): Adjust comment. * testsuite/binutils-all/readelf-maskos-1a.d: New test. * testsuite/binutils-all/readelf-maskos-1b.d: New test. * testsuite/binutils-all/readelf-maskos.s: New test. * testsuite/binutils-all/retain1.s: New test. * testsuite/binutils-all/retain1a.d: New test. * testsuite/binutils-all/retain1b.d: New test. gas/ChangeLog: * NEWS: Announce SHF_GNU_RETAIN support. * config/obj-elf.c (obj_elf_change_section): Merge SHF_GNU_RETAIN bit between section declarations. (obj_elf_parse_section_letters): Handle 'R' flag. Handle numeric flag values within the SHF_MASKOS range. (obj_elf_section): Validate SHF_GNU_RETAIN usage. * doc/as.texi: Document 'R' flag to .section directive. * testsuite/gas/elf/elf.exp: Run new tests. * testsuite/gas/elf/section10.d: Unset SHF_GNU_RETAIN bit. * testsuite/gas/elf/section10.s: Likewise. * testsuite/gas/elf/section22.d: New test. * testsuite/gas/elf/section22.s: New test. * testsuite/gas/elf/section23.s: New test. * testsuite/gas/elf/section23a.d: New test. * testsuite/gas/elf/section23b.d: New test. * testsuite/gas/elf/section23b.err: New test. * testsuite/gas/elf/section24.l: New test. * testsuite/gas/elf/section24.s: New test. * testsuite/gas/elf/section24a.d: New test. * testsuite/gas/elf/section24b.d: New test. include/ChangeLog: * elf/common.h (SHF_GNU_RETAIN): Define. ld/ChangeLog: * NEWS: Announce support for SHF_GNU_RETAIN. * ld.texi (garbage collection): Document SHF_GNU_RETAIN. (Output Section Discarding): Likewise. * testsuite/ld-elf/elf.exp: Run new tests. * testsuite/ld-elf/retain1.s: New test. * testsuite/ld-elf/retain1a.d: New test. * testsuite/ld-elf/retain1b.d: New test. * testsuite/ld-elf/retain2.d: New test. * testsuite/ld-elf/retain2.ld: New test. * testsuite/ld-elf/retain2.map: New test. * testsuite/ld-elf/retain3.d: New test. * testsuite/ld-elf/retain3.s: New test. * testsuite/ld-elf/retain4.d: New test. * testsuite/ld-elf/retain4.s: New test. * testsuite/ld-elf/retain5.d: New test. * testsuite/ld-elf/retain5.map: New test. * testsuite/ld-elf/retain5lib.s: New test. * testsuite/ld-elf/retain5main.s: New test. * testsuite/ld-elf/retain6a.d: New test. * testsuite/ld-elf/retain6b.d: New test. * testsuite/ld-elf/retain6lib.s: New test. * testsuite/ld-elf/retain6main.s: New test.
2020-11-17When reading string arguments for the assembler's string directives treat ↵Nick Clifton1-1/+3
space separated strings as a single entity. * read.c (stringer): Treat space separated, quote enclosed strings as a single string. * doc/as.texi (asciz): Mention this behaviour in the description of the asciz directive. * testsuite/gas/all/asciz.s: New test. * testsuite/gas/all/asciz.d: New test driver. * testsuite/gas/all/gas.exp: Run the new test.
2020-10-05Fix spelling mistakesSamanta Navarro1-1/+1
2020-10-05GAS: Update the .section directive so that a numeric section index can be ↵Nick Clifton1-2/+5
provided when the "o" flag is used. PR 26253 gas * config/obj-elf.c (obj_elf_section): Accept a numeric value for the "o" section flag. Interpret it as a section index. Allow an index of zero. * doc/as.texi: Document the new behaviour. * NEWS: Mention the new feature. Tidy entries. * testsuite/gas/elf/sh-link-zero.s: New test. * testsuite/gas/elf/sh-link-zero.d: New test driver. * testsuite/gas/elf/elf.exp: Run the new test. * testsuite/gas/elf/section21.l: Updated expected assembler output. bfd * elf.c (_bfd_elf_setup_sections): Do not complain about an sh_link value of zero when the SLF_LINK_ORDER flag is set. (assign_section_numbers): Likewise.
2020-10-01Add new directive to GAS: .attach_to_group.Nick Clifton1-1/+11
* config/obj-elf (elf_pseudo_table): Add attach_to_group. (obj_elf_attach_to_group): New function. * doc/as.texi: Document the new directive. * NEWS: Mention the new feature. * testsuite/gas/elf/attach-1.s: New test. * testsuite/gas/elf/attach-1.d: New test driver. * testsuite/gas/elf/attach-2.s: New test. * testsuite/gas/elf/attach-2.d: New test driver. * testsuite/gas/elf/attach-err.s: New test. * testsuite/gas/elf/attach-err.d: New test driver. * testsuite/gas/elf/attach-err.err: New test error output. * testsuite/gas/elf/elf.exp: Run the new tests.
2020-09-14Add a new ".nop" directive to the assembler to allow the creation of no-op ↵Nick Clifton1-11/+21
instructions in an architeture neutral manner. * read.c (s_nop): New function. Handles the .nop directive. (potable): Add entry for "nop". (s_nops): Code tidy. * read.h (s_nop): Add prototype. * config/tc-bpf.h (md_single_noop_insn): Define. * config/tc-mmix.h (md_single_noop_insn): Define. * config/tc-or1k.h (md_single_noop_insn): Define. * config/tc-s12z.c (md_assemble): Preserve the input line pointer, rather than corrupting it. * write.c (relax_segment): Update error message regarding non-absolute values passed to .fill and .nops. * NEWS: Mention the new directive. * doc/as.texi: Document the new directive. * doc/internals.texi: Document the new internal macros used to implement the new directive. * testsuite/gas/all/nop.s: New test. * testsuite/gas/all/nop.d: New test control file. * testsuite/gas/all/gas.exp: Run the new test. * testsuite/gas/elf/dwarf-5-nop-for-line-table.s: New test. * testsuite/gas/elf/dwarf-5-nop-for-line-table.d: New test control file. * testsuite/gas/elf/elf.exp: Run the new test. * testsuite/gas/i386/space1.l: Adjust expected output.
2020-09-11gas: Don't error when .debug_line already exists, unless .loc was usedMark Wielaard1-2/+5
When -g was used to generate DWARF gas would error out when a .debug_line already exists. But when a .debug_info section already exists it would simply skip generating one without warning or error. Do the same for .debug_line. It is only an error when the user explicitly uses .loc directives and also generates the .debug_line table itself. The tests are unfortunately arch specific because the line table is only generated when actual instructions have been emitted. Use i386 because that is probably the most used architecture. Before this patch the new dwarf-line-2 testcase would fail, with this patch it succeeds (and doesn't try to add its own line table). gas/ChangeLog: * as.texi (-g): Explicitly mention when .debug_info and .debug_line are generated for the DWARF format. (Loc): Add that it is an error to both use a .loc directive and generate a .debug_line yourself. * dwarf2dbg.c (dwarf2_any_loc_directive_seen): New static variable. (dwarf2_directive_loc): Set dwarf2_any_loc_directive_seen to TRUE. (dwarf2_finish): Check dwarf2_any_loc_directive_seen before emitting an error. Only create .debug_line if it is empty (or doesn't exist). * testsuite/gas/i386/i386.exp: Add dwarf2-line-{1,2,3,4} when testing an elf target. * testsuite/gas/i386/dwarf2-line-{1,2,3,4}.{s,d,l}: New test files.
2020-09-01ELF: Document the .tls_common directiveH.J. Lu1-0/+13
Document the .tls_common directive added by commit b8871f357fdfa9c0c06d2d3e5600391d8c994f37 Author: H.J. Lu <hjl.tools@gmail.com> Date: Mon Feb 22 09:18:52 2016 -0800 Properly implement STT_COMMON * doc/as.texi: Document the .tls_common directive.
2020-08-20Remove --reduce-memory-overheads and --hash-size arguments.Martin Liska1-13/+0
* NEWS: Mention --reduce-memory-overheads and --hash-size arguments options. * as.c: Remove the options from help. * doc/as.texi: Remove options. * doc/internals.texi: Remove hash from documentation. * hash.c (struct hash_entry): Remove. (struct hash_control): Likewise. (set_gas_hash_table_size): Likewise. (hash_new_sized): Likewise. (hash_new): Likewise. (hash_die): Likewise. (hash_lookup): Likewise. (hash_insert): Likewise. (hash_jam): Likewise. (hash_replace): Likewise. (hash_find): Likewise. (hash_find_n): Likewise. (hash_delete): Likewise. (hash_traverse): Likewise. (hash_print_statistics): Likewise. (TABLES): Likewise. (STATBUFSIZE): Likewise. (main): Likewise. (what): Likewise. (destroy): Likewise. (applicatee): Likewise. (whattable): Likewise. * hash.h (struct hash_control): Likewise. (set_gas_hash_table_size): Likewise. (hash_new): Likewise. (hash_new_sized): Likewise. (hash_die): Likewise. (hash_insert): Likewise. (hash_jam): Likewise. (hash_replace): Likewise. (hash_find): Likewise. (hash_find_n): Likewise. (hash_delete): Likewise. (hash_traverse): Likewise. (hash_print_statistics): Likewise.
2020-08-04gas: Fix as.texi typo infortmationMark Wielaard1-3/+3
gas/ChangeLog: * doc/as.texi (--gdwarf-[345]): Fix typo.
2020-07-27doc: Replace preceeded with precededH.J. Lu1-1/+1
binutils/ * doc/binutils.texi: Replace preceeded with preceded. gas/ * doc/as.texi: Replace preceeded with preceded.
2020-06-26m68k: tag floating-point ABI usedPat Bernardi1-0/+16
This patch adds GNU attribute support to m68k and utilises it to tag the floating-point calling convention used (hard-float or soft-float). It enables the linker to ensure linked objects use a consistent floating-point ABI and allows tools like GDB to infer the ABI used from the ELF file. It is based on similar work done for PowerPC. bfd/ * elf32-m68k.c (m68k_elf_merge_obj_attributes): New function. (elf32_m68k_merge_private_bfd_data): Merge GNU attributes. binutils/ * readelf.c (display_m68k_gnu_attribute): New function. (process_arch_specific): Call display_m68k_gnu_attribute for EM_68K. gas/ * config/tc-m68k.c (m68k_elf_gnu_attribute): New function. (md_pseudo_table): Handle "gnu_attribute". * doc/as.texi: Document GNU attribute for M68K. include/ * elf/m68k.h: Add enum for GNU object attribute with floating point tag name and values. ld/ * testsuite/ld-m68k/attr-gnu-4-0.s: New file. * testsuite/ld-m68k/attr-gnu-4-1.s: Likewise. * testsuite/ld-m68k/attr-gnu-4-2.s: Likewise. * testsuite/ld-m68k/attr-gnu-4-00.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-01.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-02.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-10.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-11.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-12.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-20.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-21.d: Likewise. * testsuite/ld-m68k/attr-gnu-4-22.d: Likewise. * testsuite/ld-m68k/m68k.exp: Run the new tests.
2020-06-15xtensa: allow runtime ABI selectionMax Filippov1-0/+1
2020-06-15 Max Filippov <jcmvbkbc@gmail.com> bfd/ * elf32-xtensa.c (XSHAL_ABI, XTHAL_ABI_UNDEFINED) (XTHAL_ABI_WINDOWED, XTHAL_ABI_CALL0): New macros. (elf32xtensa_abi): New global variable. (xtensa_abi_choice): New function. (elf_xtensa_create_plt_entry): Use xtensa_abi_choice instead of XSHAL_ABI to select PLT code. gas/ * config/tc-xtensa.c (XTHAL_ABI_WINDOWED, XTHAL_ABI_CALL0): New macros. (elf32xtensa_abi): New declaration. (option_abi_windowed, option_abi_call0): New enum constants. (md_longopts): Add entries for --abi-windowed and --abi-call0. (md_parse_option): Add handlers for --abi-windowed and --abi-call0. (xtensa_add_config_info): Use xtensa_abi_choice instead of XSHAL_ABI to format ABI tag. * doc/as.texi (Target Xtensa options): Add --abi-windowed and --abi-call0 to the list of options. * doc/c-xtensa.texi: Add description for options --abi-windowed and --abi-call0. * testsuite/gas/xtensa/abi-call0.d: New test definition. * testsuite/gas/xtensa/abi-windowed.d: New test definition. * testsuite/gas/xtensa/abi.s: New test source. include/ * elf/xtensa.h (xtensa_abi_choice): New declaration. ld/ * emultempl/xtensaelf.em (XSHAL_ABI): Remove macro definition. (XTHAL_ABI_UNDEFINED, XTHAL_ABI_WINDOWED, XTHAL_ABI_CALL0): New macros. (elf32xtensa_abi): New declaration. (xt_config_info_unpack_and_check): Set elf32xtensa_abi if it is undefined. Use xtensa_abi_choice instead of XSHAL_ABI to test ABI tag consistency. (xtensa_add_config_info): Use xtensa_abi_choice instead of XSHAL_ABI to format ABI tag. (PARSE_AND_LIST_PROLOGUE): Define OPTION_ABI_WINDOWED, OPTION_ABI_CALL0 and declare elf32xtensa_abi. (PARSE_AND_LIST_LONGOPTS): Add entries for --abi-windowed and --abi-call0. (PARSE_AND_LIST_OPTIONS): Add help text for --abi-windowed and --abi-call0. (PARSE_AND_LIST_ARGS_CASES): Add handlers for --abi-windowed and --abi-call0. * ld.texi: Add description for options --abi-windowed and --abi-call0.
2020-05-06Section "3.1 Preprocessing" of the online GAS manual has a wrong reference ↵Nick Clifton1-2/+3
to "Using GNU CC". This fixes that link. PR 25927 * doc/as.texi (Preprocessing): Replace cross reference to not existant document with a URL to the equivalent page in the GCC manual.
2020-04-22.symver fixesAlan Modra1-4/+3
* config/obj-elf.c (elf_frob_symbol): Unconditionally remove symbol for ".symver .. remove". * doc/as.texi (.symver): Update. * testsuite/gas/symver/symver11.s: Make foo weak. * testsuite/gas/symver/symver11.d: Expect an error. * testsuite/gas/symver/symver7.d: Allow other random symbols.
2020-04-21gas: Extend .symver directiveH.J. Lu1-4/+12
Extend .symver directive to update visibility of the original symbol and assign one original symbol to different versioned symbols: .symver foo, foo@VERS_1, local # Change foo to a local symbol. .symver foo, foo@VERS_2, hidden # Change foo to a hidden symbol. .symver foo, foo@@VERS_3, remove # Remove foo from symbol table. .symver foo, bar@V1 # Assign foo to bar@V1 and baz@V2. .symver foo, baz@V2 PR gas/23840 PR gas/25295 * NEWS: Mention .symver extension. * config/obj-elf.c (obj_elf_find_and_add_versioned_name): New function. (obj_elf_symver): Call obj_elf_find_and_add_versioned_name to add a version name. Add local, hidden and remove visibility support. (elf_frob_symbol): Handle the list of version names. Update the original symbol to local, hidden or remove it from the symbol table. (elf_frob_file_before_adjust): Handle the list of version names. * config/obj-elf.h (elf_visibility): New. (elf_versioned_name_list): Likewise. (elf_obj_sy): Change local to bitfield. Add rename, bad_version and visibility. Change versioned_name pointer to struct elf_versioned_name_list. * doc/as.texi: Update .symver directive. * testsuite/gas/symver/symver.exp: Run all *.d tests. Add more error checking tests. * testsuite/gas/symver/symver6.d: New file. * testsuite/gas/symver/symver7.d: Likewise. * testsuite/gas/symver/symver7.s: Likewise. * testsuite/gas/symver/symver8.d: Likewise. * testsuite/gas/symver/symver8.s: Likewise. * testsuite/gas/symver/symver9.s: Likewise. * testsuite/gas/symver/symver9a.d: Likewise. * testsuite/gas/symver/symver9b.d: Likewise. * testsuite/gas/symver/symver10.s: Likewise. * testsuite/gas/symver/symver10a.d: Likewise. * testsuite/gas/symver/symver10b.d: Likewise. * testsuite/gas/symver/symver11.d: Likewise. * testsuite/gas/symver/symver11.s: Likewise. * testsuite/gas/symver/symver12.d: Likewise. * testsuite/gas/symver/symver12.s: Likewise. * testsuite/gas/symver/symver13.d: Likewise. * testsuite/gas/symver/symver13.s: Likewise. * testsuite/gas/symver/symver14.d: Likewise. * testsuite/gas/symver/symver14.l: Likewise. * testsuite/gas/symver/symver15.d: Likewise. * testsuite/gas/symver/symver15.l: Likewise. * testsuite/gas/symver/symver6.l: Removed. * testsuite/gas/symver/symver6.s: Updated.
2020-03-11Add support for generating DWARF-5 format directory and file name tables ↵Nick Clifton1-1/+17
from the assembler. PR 25611 PR 25614 * dwarf.h (DWARF2_Internal_LineInfo): Add li_address_size and li_segment_size fields. * dwarf.c (read_debug_line_header): Record the address size and segment selector size values (if present) in the lineinfo structure. (display_formatted_table): Warn if the format count is empty but the table itself is not empty. Display the format count and entry count at the start of the table dump. (display_debug_lines_raw): Display the address size and segement selector size fields, if present. * testsuite/binutils-all/dw5.W: Update expected output. gas * dwarf2dbg.c (DWARF2_FILE_TIME_NAME): Default to -1. (DWARF2_FILE_SIZE_NAME): Default to -1. (DWARF2_LINE_VERSION): Default to the current dwarf level or 3, whichever is higher. (DWARF2_LINE_MAX_OPS_PER_INSN): Provide a default value of 1. (NUM_MD5_BYTES): Define. (struct file entry): Add md5 field. (get_filenum): Delete and replace with... (get_basename): New function. (get_directory_table_entry): New function. (allocate_filenum): New function. (allocate_filename_to_slot): New function. (dwarf2_where): Use new functions. (dwarf2_directive_filename): Add support for extended .file pseudo-op. (dwarf2_directive_loc): Allow the use of file number zero with DWARF 5 or higher. (out_file_list): Rename to... (out_dir_and_file_list): Add DWARF 5 support. (out_debug_line): Emit extra values into the section header for DWARF 5. (out_debug_str): Allow for file 0 to be used with DWARF 5. * doc/as.texi (.file): Update the description of this pseudo-op. * testsuite/gas/elf-dwarf-5-file0.s: Add more lines. * testsuite/gas/elf-dwarf-5-file0.d: Update expected dump output. * testsuite/gas/lns/lns-diag-1.l: Update expected error message. * NEWS: Mention the new feature.
2020-03-06Add support for a ".file 0" directive if supporting DWARF 5 or higher.Nick Clifton1-1/+1
PR 25614 * dwarf2dbg.c (dwarf2_directive_filename): Allow a file number of 0 if the dwarf_level is 5 or more. Complain if a filename follows a file 0. * testsuite/gas/elf/dwarf-5-file0.s: New test. * testsuite/gas/elf/dwarf-5-file0.d: New test driver. * testsuite/gas/elf/elf.exp: Run the new test. PR 25612 * config/tc-ia64.h (DWARF2_VERISION): Fix typo. * doc/as.texi: Fix another typo.
2020-03-06Add support for --dwarf-[3|4|5] to assembler command line.Nick Clifton1-1/+22
PR 25612 * as.c (dwarf_level): Define. (show_usage): Add --gdwarf-3, --gdwarf-4 and --gdwarf-5. (parse_args): Add support for the new options. as.h (dwarf_level): Prototype. * dwarf2dbg.c (DWARF2_VERSION): Use dwarf_level as default version value. * config/tc-ia64.h (DWARF2_VERISION): Update definition. (DWARF2_LINE_VERSION): Remove definition. * doc/as.texi: Document the new options.
2020-02-19Various fixes for the Z80 support.Sergey Belyashov1-10/+1
PR 25537 ld * emultempl/z80.em: Remove machine compatability checking. PR 25517 * testsuite/ld-z80/arch_ez80_adl.d: Update command line. * testsuite/ld-z80/arch_ez80_z80.d: Likewise. * testsuite/ld-z80/arch_r800.d: Likewise. * testsuite/ld-z80/arch_z180.d: Likewise. * testsuite/ld-z80/arch_z80n.d: Likewise. * testsuite/ld-z80/comb_arch_ez80_z80.d: Likewise. * testsuite/ld-z80/comb_arch_z180_z80.d: Likewise. * testsuite/ld-z80/comb_arch_z80_ez80.d: Likewise. * testsuite/ld-z80/comb_arch_z80_z180.d: Likewise. * testsuite/ld-z80/comb_arch_z80_z80n.d: Likewise. * testsuite/ld-z80/relocs_b_ez80.d: Likewise. * testsuite/ld-z80/relocs_b_z80.d: Likewise. * testsuite/ld-z80/relocs_f_ez80.d: Likewise. * testsuite/ld-z80/relocs_f_z80.d: Likewise. * testsuite/ld-z80/relocs_f_z80n.d: Likewise. bfd * cpu-z80.c: Add machine type compatibility checking. gas * config/tc-z80.c (md_parse_option): Do not use an underscore prefix for local labels in SDCC compatability mode. (z80_start_line_hook): Remove SDCC dollar label support. * testsuite/gas/z80/sdcc.d: Update expected disassembly. * testsuite/gas/z80/sdcc.s: Likewise. * config/tc-z80.c: Add -march option. * doc/as.texi: Update Z80 documentation. * doc/c-z80.texi: Likewise. * testsuite/gas/z80/ez80_adl_all.d: Update command line. * testsuite/gas/z80/ez80_adl_suf.d: Likewise. * testsuite/gas/z80/ez80_pref_dis.d: Likewise. * testsuite/gas/z80/ez80_z80_all.d: Likewise. * testsuite/gas/z80/ez80_z80_suf.d: Likewise. * testsuite/gas/z80/gbz80_all.d: Likewise. * testsuite/gas/z80/r800_extra.d: Likewise. * testsuite/gas/z80/r800_ii8.d: Likewise. * testsuite/gas/z80/r800_z80_doc.d: Likewise. * testsuite/gas/z80/sdcc.d: Likewise. * testsuite/gas/z80/z180.d: Likewise. * testsuite/gas/z80/z180_z80_doc.d: Likewise. * testsuite/gas/z80/z80_doc.d: Likewise. * testsuite/gas/z80/z80_ii8.d: Likewise. * testsuite/gas/z80/z80_in_f_c.d: Likewise. * testsuite/gas/z80/z80_op_ii_ld.d: Likewise. * testsuite/gas/z80/z80_out_c_0.d: Likewise. * testsuite/gas/z80/z80_sli.d: Likewise. * testsuite/gas/z80/z80n_all.d: Likewise. * testsuite/gas/z80/z80n_reloc.d: Likewise.
2020-02-06ELF: Support the section flag 'o' in .section directiveH.J. Lu1-0/+27
As shown in https://sourceware.org/bugzilla/show_bug.cgi?id=25490 --gc-sections will silently remove __patchable_function_entries section and generate corrupt result. This patch adds the section flag 'o' to .section directive: .section __patchable_function_entries,"awo",@progbits,foo .section __patchable_function_entries,"awoG",@progbits,foo,foo,comdat .section __patchable_function_entries,"awo",@progbits,bar,unique,4 .section __patchable_function_entries,"awoG",@progbits,foo,foo,comdat,unique,1 which specifies the symbol name which the section references. Assmebler will set its elf_linked_to_section to a local section where the symbol is defined. Linker is updated to call mark_hook if gc_mark of any of its linked-to sections is set after all sections, except for backend specific ones, have been garbage collected. bfd/ PR gas/25381 * bfd-in2.h: Regenerated. * elflink.c (_bfd_elf_gc_mark_extra_sections): Call mark_hook on section if gc_mark of any of its linked-to sections is set and don't set gc_mark again. * section.c (asection): Add linked_to_symbol_name to map_head union. gas/ PR gas/25381 * config/obj-elf.c (get_section): Also check linked_to_symbol_name. (obj_elf_change_section): Also set map_head.linked_to_symbol_name. (obj_elf_parse_section_letters): Handle the 'o' flag. (build_group_lists): Renamed to ... (build_additional_section_info): This. Set elf_linked_to_section from map_head.linked_to_symbol_name. (elf_adjust_symtab): Updated. * config/obj-elf.h (elf_section_match): Add linked_to_symbol_name. * doc/as.texi: Document the 'o' flag. * testsuite/gas/elf/elf.exp: Run PR gas/25381 tests. * testsuite/gas/elf/section18.d: New file. * testsuite/gas/elf/section18.s: Likewise. * testsuite/gas/elf/section19.d: Likewise. * testsuite/gas/elf/section19.s: Likewise. * testsuite/gas/elf/section20.d: Likewise. * testsuite/gas/elf/section20.s: Likewise. * testsuite/gas/elf/section21.d: Likewise. * testsuite/gas/elf/section21.l: Likewise. * testsuite/gas/elf/section21.s: Likewise. ld/ PR ld/24526 PR ld/25021 PR ld/25490 * testsuite/ld-elf/elf.exp: Run PR ld/25490 tests. * testsuite/ld-elf/pr24526.d: New file. * testsuite/ld-elf/pr24526.s: Likewise. * testsuite/ld-elf/pr25021.d: Likewise. * testsuite/ld-elf/pr25021.s: Likewise. * testsuite/ld-elf/pr25490-2-16.rd: Likewise. * testsuite/ld-elf/pr25490-2-32.rd: Likewise. * testsuite/ld-elf/pr25490-2-64.rd: Likewise. * testsuite/ld-elf/pr25490-2.s: Likewise. * testsuite/ld-elf/pr25490-3-16.rd: Likewise. * testsuite/ld-elf/pr25490-3-32.rd: Likewise. * testsuite/ld-elf/pr25490-3-64.rd: Likewise. * testsuite/ld-elf/pr25490-3.s: Likewise. * testsuite/ld-elf/pr25490-4-16.rd: Likewise. * testsuite/ld-elf/pr25490-4-32.rd: Likewise. * testsuite/ld-elf/pr25490-4-64.rd: Likewise. * testsuite/ld-elf/pr25490-4.s: Likewise. * testsuite/ld-elf/pr25490-5-16.rd: Likewise. * testsuite/ld-elf/pr25490-5-32.rd: Likewise. * testsuite/ld-elf/pr25490-5-64.rd: Likewise. * testsuite/ld-elf/pr25490-5.s: Likewise. * testsuite/ld-elf/pr25490-6-16.rd: Likewise. * testsuite/ld-elf/pr25490-6-32.rd: Likewise. * testsuite/ld-elf/pr25490-6-64.rd: Likewise. * testsuite/ld-elf/pr25490-6.s: Likewise.
generated by cgit v1.1 at 2024-11-27 06:07:57 +0000