-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2023-48cbfec7a5 2023-04-19 02:52:45.772714 --------------------------------------------------------------------------------
Name : dwarves Product : Fedora 37 Version : 1.25 Release : 1.fc37 URL : http://acmel.wordpress.com Summary : Debugging Information Manipulation Tools (pahole & friends) Description : dwarves is a set of tools that use the debugging information inserted in ELF binaries by compilers such as GCC, used by well known debuggers such as GDB, and more recent ones such as systemtap. Utilities in the dwarves suite include pahole, that can be used to find alignment holes in structs and classes in languages such as C, C++, but not limited to these. It also extracts other information such as CPU cacheline alignment, helping pack those structures to achieve more cache hits. These tools can also be used to encode and read the BTF type information format used with the Linux kernel bpf syscall, using 'pahole -J' and 'pahole -F btf'. A diff like tool, codiff can be used to compare the effects changes in source code generate on the resulting binaries. Another tool is pfunct, that can be used to find all sorts of information about functions, inlines, decisions made by the compiler about inlining, etc. One example of pfunct usage is in the fullcircle tool, a shell that drivers pfunct to generate compileable code out of a .o file and then build it using gcc, with the same compiler flags, and then use codiff to make sure the original .o file and the new one generated from debug info produces the same debug info. Pahole also can be used to use all this type information to pretty print raw data according to command line directions. Headers can have its data format described from debugging info and offsets from it can be used to further format a number of records. The btfdiff utility compares the output of pahole from BTF and DWARF to make sure they produce the same results. -------------------------------------------------------------------------------- Update Information: New release: v1.25, needed to build the kernel with binutils 2.40 -------------------------------------------------------------------------------- ChangeLog: * Mon Apr 10 2023 Arnaldo Carvalho de Melo <a...@redhat.com> - 1.25-1 - New release: v1.25 - Support for DW_TAG_unspecified_type more generally. - Make sure struct member offsets are in ascending order. Rust BTF needs this. - Support C atomic types (DW_TAG_atomic_type). - Initial support for DW_TAG_LLVM_annotation, used for BTF type tags, for __rcu, __user, etc - Exclude functions with the same name (static functions in different CUs), inconsistent prototypes or not following calling convention. - Allow generation of BTF for optimized functions, those that end with a .isra*, .constprop*. - Support 'pahole --lang=/--lang_exclude=asm' - Support --compile from DWARF in addition to from BTF. - Exclude RUST CUs in 'btfdiff', as those are not yet being BTF encoded. -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2023-48cbfec7a5' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- _______________________________________________ package-announce mailing list -- package-announce@lists.fedoraproject.org To unsubscribe send an email to package-announce-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
