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https://sourceware.org/git/binutils-gdb.git
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e6213e09ed
When dereferencing a GOT slot with lgrl or lg we rewrite this using larl to get rid of the extra memory access. However, we cannot do this for: - symbols marked for absolute addressing - symbols at odd addresses (larl can handle only even addresses) Fixed with the attached patch. bfd/ChangeLog: 2018-09-17 Andreas Krebbel <krebbel@linux.ibm.com> * elf64-s390.c (elf_s390_relocate_section): Prevent rewriting of GOT accesses with larl for ABS or misaligned symbols. ld/ChangeLog: 2018-09-17 Andreas Krebbel <krebbel@linux.ibm.com> * testsuite/ld-s390/gotreloc-1.s: Add tests for ABS and misaligned symbol. Move variables into data section. Make bar 8 bytes wide. * testsuite/ld-s390/gotreloc-1.ver: Make misaligned_sym resolve locally. * testsuite/ld-s390/gotreloc_31-1.dd: Adjust patterns. * testsuite/ld-s390/gotreloc_64-norelro-1.dd: Likewise. * testsuite/ld-s390/gotreloc_64-relro-1.dd: Likewise.
13 lines
480 B
Plaintext
13 lines
480 B
Plaintext
tmpdir/gotreloc_64-1: file format elf64-s390
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Disassembly of section .text:
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.* <foo>:
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.*: c0 10 00 00 0f 0c [ ]*larl %r1,2000 <bar>
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.*: c0 10 00 00 0f 09 [ ]*larl %r1,2000 <bar>
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.*: c4 1d 00 00 0f 02 [ ]*lrl %r1,1ff8 <_GLOBAL_OFFSET_TABLE_\+0x28>
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.*: 58 10 c0 28 [ ]*l %r1,40\(%r12\)
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.*: e3 10 c0 28 00 58 [ ]*ly %r1,40\(%r12\)
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.*: c4 18 00 00 0e f6 [ ]*lgrl %r1,1ff0 <_GLOBAL_OFFSET_TABLE_\+0x20>
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.*: c4 18 00 00 0e ef [ ]*lgrl %r1,1fe8 <_GLOBAL_OFFSET_TABLE_\+0x18>
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