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6806377956
Fix incorrect adjustment of diff relocs when relaxing, and thus the resulting source line to address mismatch. Fix two issues when adjusting diff relocs to account for deleted bytes. 1. Don't adjust the difference if the end address is the shrinked insn's address i.e. use < instead of <=. The relaxation code deletes count bytes from or after shrinked_insn_address, so the difference between start_address and end_address should remain unchanged in this case. 2. Adjust the reloc addend if the difference is to be adjusted and symval + reloc addend is past the shrinked insn address. This is because for a typical sym1 - sym2 diff reloc, sym1 is .text + irel->r_addend, and the addend should be reduced to account for the shrinked insn. For example, assume the reloc value is .text + 0x8 with .text = 0, the diff value in the object file = 0x4, and shrinked_insn_address = 0x4 with count = 0x2. Then the existing code writes 0x2 into the object file to account for the deleted bytes, as shrinked_insn_address lies between 0x8 and 0x8 - 0x4 = 0x4, but leaves the addend as is. The next time the reloc is looked at, the code sees if a shrinked_insn_address lies between 0x8 and 0x8 - 0x2 = 0x6, instead of 0x6 and 0x4. If there happens to be one, then the diff value in the object file ends up getting reduced again. bfd/ 2017-06-27 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> PR ld/13402 * elf32-avr.c (elf32_avr_adjust_diff_reloc_value): Adjust reloc addend if necessary. Adjust diff only if shrinked_insn_address < end_address. ld/ 2017-06-27 Senthil Kumar Selvaraj <senthil_kumar.selvaraj@atmel.com> PR ld/13402 * testsuite/ld-avr/pr13402.d: New test. * testsuite/ld-avr/pr13402.s: New test. |
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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.