X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=binutils%2FNEWS;h=4fdf1c3b4e85684c6fbec1f5f15ae4a39cfde487;hb=2e2a82421ac0c817d433d2698ed29ce84d1f1574;hp=fd14d71ce92772928bb2963cb492222c3b360972;hpb=197245e341aeb1b5da8ee5fbe5d6c49de650fb89;p=binutils-gdb.git diff --git a/binutils/NEWS b/binutils/NEWS index fd14d71ce92..4fdf1c3b4e8 100644 --- a/binutils/NEWS +++ b/binutils/NEWS @@ -1,8 +1,178 @@ -*- text -*- +Changes in 2.39: + +* Add --no-weak/-W option to nm to make it ignore weak symbols. + +* Add an option to objdump and readelf to prevent attempts to access debuginfod + servers when following links. + +* objcopy --weaken, --weaken-symbol, and --weaken-symbols now make ELF + STB_GNU_UNIQUE symbols weak. + +* objdump now supports syntax highlighting of disassembler output for some + architectures. Use the --disassembler-color=MODE command line flag, with + mode being either off, color, or extended-color. + +Changes in 2.38: + +* elfedit: Add --output-abiversion option to update ABIVERSION. + +* Add support for the LoongArch instruction set. + +* Tools which display symbols or strings (readelf, strings, nm, objdump) + have a new command line option which controls how unicode characters are + handled. By default they are treated as normal for the tool. Using + --unicode=locale will display them according to the current locale. + Using --unicode=hex will display them as hex byte values, whilst + --unicode=escape will display them as escape sequences. In addition + using --unicode=highlight will display them as unicode escape sequences + highlighted in red (if supported by the output device). + +* readelf -r dumps RELR relative relocations now. + +* Support for efi-app-aarch64, efi-rtdrv-aarch64 and efi-bsdrv-aarch64 has been + added to objcopy in order to enable UEFI development using binutils. + +* ar: Add --thin for creating thin archives. -T is a deprecated alias without + diagnostics. In many ar implementations -T has a different meaning, as + specified by X/Open System Interface. + +Changes in 2.37: + +* The readelf tool has a new command line option which can be used to specify + how the numeric values of symbols are reported. --sym-base=0|8|10|16 tells + readelf to display the values in base 8, base 10 or base 16. A sym base of 0 + represents the default action of displaying values under 10000 in base 10 and + values above that in base 16. + +* Binutils now requires a C99 compiler and library to build. + +* A new format has been added to the nm program. Specifying + --format=just-symbols (or just using -j) will tell the program to only + display symbol names and nothing else. + +* A new command line --keep-section-symbols has been added to objcopy and + strip. This stops the removal of unused section symbols when the file is + copied. Removing these symbols saves space, but sometimes they are needed by + other tools. + +* objcopy --weaken, --weaken-symbol and --weaken-symbols now make undefined + symbols weak on targets that support weak symbols. + +* Readelf and objdump can now display and use the contents of .debug_sup + sections. + +* Readelf and objdump will now follow links to separate debug info files by + default. This behaviour can be stopped via the use of the new -wN or + --debug-dump=no-follow-links options for readelf and the -WN or + --dwarf=no-follow-links options for objdump. Also the old behaviour can be + restored by the use of the --enable-follow-debug-links=no configure time + option. + + The semantics of the =follow-links option have also been slightly changed. + When enabled, the option allows for the loading of symbol tables and string + tables from the separate files which can be used to enhance the information + displayed when dumping other sections, but it does not automatically imply + that information from the separate files should be displayed. + + If other debug section display options are also enabled (eg + --debug-dump=info) then the contents of matching sections in both the main + file and the separate debuginfo file *will* be displayed. This is because in + most cases the debug section will only be present in one of the files. + + If however non-debug section display options are enabled (eg --sections) then + the contents of matching parts of the separate debuginfo file will *not* be + displayed. This is because in most cases the user probably only wanted to + load the symbol information from the separate debuginfo file. In order to + change this behaviour a new command line option --process-links can be used. + This will allow di0pslay options to applied to both the main file and any + separate debuginfo files. + +* Nm has a new command line option: --quiet. This suppresses "no symbols" + diagnostic. + +Changes in 2.36: + +* Update elfedit and readelf with LAM_U48 and LAM_U57 support. + +* Nm has a new command line option: --ifunc-chars=CHARS. This specifies a + string of one or two characters. The first character is used as the type + character when displaying global ifunc symbols. The second character, if + present is used when displaying local ifunc symbols. + + In addition a new configure time option --enable-f-for-ifunc-symbols has been + created, which if used will change nm's default characters for ifunc symbols + from i (both local and global) to F (global) and f (local). + +* The ar tool's previously unused l modifier is now used for specifying + dependencies of a static library. The arguments of this option + (or --record-libdeps long form option) will be stored verbatim in the + __.LIBDEP member of the archive, which the linker may read at link time. + +* Readelf can now display the contents of LTO symbol table sections when asked + to do so via the --lto-syms command line option. + +* Readelf now accepts the -C command line option to enable the demangling of + symbol names. In addition the --demangle=