forked from Imagelibrary/binutils-gdb
086c8f406d
gas needs to build lists of sections for each group. This arranges to build the lists earlier, so they can be used when looking for sections that belong to a group. Using the section hash table to find sections by name, then by group isn't efficient when there are numerous groups with the same section names. Using a hash table to quickly find a group, then searching by section name on a list for the group results in a 100-fold speed improvement assembling the testcase in this PR. To reduce the number of times we traverse the section list, the patch also moves some processing done in elf_adjust_symtab for linked-to section, to elf_frob_file. This requires a testsuite change because processing will stop before elf_frob_file if there is a parse error in section21.s, ie. you'll only get the "junk at end of line" error, not the "undefined linked-to symbol" errors. PR 25333 * config/obj-elf.c (struct group_list, groups): Move earlier. (match_section): New function, extracted from.. (get_section_by_match): ..here. (free_section_idx): Move earlier. (group_section_find, group_section_insert): New functions. (change_section): Use the above. (elf_set_group_name): New function. (obj_elf_attach_to_group): Use elf_set_group_name. (set_additional_section_info): Handle linked_to_symbol_name and stabs code, extracted from.. (adjust_stab_sections): ..here,.. (build_additional_section_info): ..and here. (elf_adjust_symtab): Don't call build_additional_section_info. (elf_frob_file): Adjust. * config/obj-elf.h (elf_set_group_name): Declare. * config/tc-xtensa.c (cache_literal_section): Use elf_set_group_name. (xtensa_make_property_section): Likewise. * testsuite/gas/elf/attach-1.d: Stricter group section matching, and changed group section ordering. * testsuite/gas/elf/attach-2.d: Stricter group section matching. * testsuite/gas/elf/attach-2.s: Provide section bar type. * testsuite/gas/elf/elf.exp: Run attach-2. * testsuite/gas/elf/section21.l: Update. * testsuite/gas/elf/section21.s: Don't check for a parse error.
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.