X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=binutils%2FNEWS;h=e1aaf996e8992c54558adfe45b2d330efec80cca;hb=5b860c93e3c659625d92a2d2247712a84eac1041;hp=a3ee86ef7f513a6be433ad57a2b4b5b4ae4cce58;hpb=d3def5d73eb9d8295ca7b11d130b17a815151951;p=deliverable%2Fbinutils-gdb.git diff --git a/binutils/NEWS b/binutils/NEWS index a3ee86ef7f..e1aaf996e8 100644 --- a/binutils/NEWS +++ b/binutils/NEWS @@ -1,8 +1,93 @@ -*- text -*- +* The readelf tool now has a -L or --lint or --enable-checks option which turns + on warning messages about possible problems with the file(s) being examined. + These checks include things like zero-sized sections, which are allowed by + the ELF standard but which nevertheless might be of concern if the user + was expecting them to actually contain something. + +Changes in 2.34: + +* Binutils now supports debuginfod, an HTTP server for distributing + ELF/DWARF debugging information as well as source code. When built with + debuginfod, readelf and objdump can automatically query debuginfod + servers for separate debug files when they otherwise cannot be found. + To build binutils with debuginfod, pass --with-debuginfod to configure. + This requires libdebuginfod, the debuginfod client library. debuginfod + is distributed with elfutils, starting with version 0.178. For more + information see https://sourceware.org/elfutils. + +* Add --output option to the "ar" program. This option can be used to specify + the output directory when extracting members from an archive. + +* Add --keep-section option to objcopy and strip. This option keeps the + specified section from being removed. + + * Add visualization of jumps inside a function by drawing an ascii character + graph between the address and the disassembler column. Enabled via the + --visualize-jumps command line option for objdump. Currently supported by + the x86, x86_64, and ARM targets. The output looks something like this: + + c6: | | \----------> be 00 00 00 00 mov $0x0,%esi + cb: | | /----> 48 8b 3d 00 00 00 00 mov 0x0(%rip),%rdi # d2 + d2: | | | 31 c0 xor %eax,%eax + d4: | | | /-- e8 00 00 00 00 callq d9 + d9: | | | \-> bf 02 00 00 00 mov $0x2,%edi + de: | +-----------|----- e8 00 00 00 00 callq e3 + e3: | \-----------|----> 48 89 da mov %rbx,%rdx + e6: | | be 00 00 00 00 mov $0x0,%esi + eb: | \----- eb de jmp cb + ed: \-------------------> 48 8b 16 mov (%rsi),%rdx + + Additional arguments to the --visualize-jumps option add colors to the + output. + +Changes in 2.33: + +* Add --source-comment[=] option to objdump which if present, + provides a prefix to source code lines displayed in a disassembly. + +* Add --set-section-alignment = option to objcopy to allow + the changing of section alignments. + +* Add --verilog-data-width option to objcopy for verilog targets to control + width of data elements in verilog hex format. + +* Add support for the Armv8.1-M Mainline and M-profile Vector Extension (MVE) + instructions. + +* The separate debug info file options of readelf (--debug-dump=links + and --debug-dump=follow) and objdump (--dwarf=links and + --dwarf=follow-links) will now display and/or follow multiple links if + more than one are present in a file. (This usually happens when gcc's + -gsplit-dwarf option is used). + + In addition objdump's --dwarf=follow-links now also affects its other + display options, so that for example, when combined with --syms it will + cause the symbol tables in any linked debug info files to also be + displayed. In addition when combined with --disassemble the --dwarf= + follow-links option will ensure that any symbol tables in the linked + files are read and used when disassembling code in the main file. + + * Add support for dumping types encoded in the Compact Type Format + to objdump and readelf. + +Changes in 2.32: + +* The addr2line, c++filt, nm and objdump tools now have a limit on the + maximum amount of recursion that is allowed whilst demangling strings. + The value for this limit is defined by the DEMANGLE_RECRUSE_LIMIT + constant declared in the include/demangle.h header file. At the time + of writing this constant has the value of 2048. + + The --no-recurse-limit option can be used to remove the limit, restoring + the behaviour of earlier versions of these tools. This may be needed in + order to dmangle truly complicated names, but it also leaves the tools + vulnerable to stack exhaustion from maliciously constructed mangled names. + * Objdump's --disassemble option can now take a parameter, specifying the starting symbol for disassembly. Disassembly will continue from this - symbol up to the next symbol. + symbol up to the next symbol or the end of the function. * The MIPS port now supports the Loongson 2K1000 processor which implements the MIPS64r2 ISA, the Loongson-mmi ASE, Loongson-cam ASE, Loongson-ext ASE, @@ -20,6 +105,11 @@ 3A1000 processor, The -march=loongson3a is an alias of -march=gs464 for compatibility. +* The size tool now has a new output format '--format=GNU' or '-G'. The + results are displayed in a similar manor to the default berkeley layout, + except read-only data is counted in the data column, not the text column. + Additionally the total is only included once. + Changes in 2.31: * Add support for disassembling netronome Flow Processor (NFP) firmware files. @@ -629,7 +719,7 @@ Changes in binutils 2.1: and/or local symbols only. They now also support long options. -Copyright (C) 2012-2018 Free Software Foundation, Inc. +Copyright (C) 2012-2020 Free Software Foundation, Inc. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright