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3a3a4c1fe4
Supporting -static-pie on PowerPC64 requires the linker to properly treat SHN_ABS symbols for cases like glibc's _nl_current_LC_CTYPE_used absolute symbol. I've been slow to fix the linker on powerpc because there is some chance that this will break some shared libraries or PIEs. bfd/ * elf64-ppc.c (ppc64_elf_check_relocs): Consolidate local sym handling code. Don't count dyn relocs against non-dynamic absolute symbols. (dec_dynrel_count): Adjust to suit. (ppc64_elf_edit_toc): Don't remove entries for absolute symbols when pic. (allocate_got): Don't allocate space for got relocs against non-dynamic absolute syms. (ppc64_elf_layout_multitoc): Likewise. (got_and_plt_relr): Likewise. (ppc64_elf_size_dynamic_sections): Likewise for local got. (got_and_plt_relr_for_local_syms): Likewise. (ppc64_elf_size_stubs): Don't allocate space for relr either. (ppc64_elf_relocate_section): Don't write relocs against non-dynamic absolute symbols. Don't optimise got and toc code sequences loading absolute symbol entries. ld/ * testsuite/ld-powerpc/abs-reloc.s, * testsuite/ld-powerpc/abs-static.d, * testsuite/ld-powerpc/abs-static.r, * testsuite/ld-powerpc/abs-pie.d, * testsuite/ld-powerpc/abs-pie.r, * testsuite/ld-powerpc/abs-shared.d, * testsuite/ld-powerpc/abs-shared.r, * testsuite/ld-powerpc/abs-pie-relr.d, * testsuite/ld-powerpc/abs-pie-relr.r, * testsuite/ld-powerpc/abs-shared-relr.d, * testsuite/ld-powerpc/abs-shared-relr.r: New tests. * testsuite/ld-powerpc/powerpc.exp: Run them.
35 lines
1.5 KiB
Makefile
35 lines
1.5 KiB
Makefile
#source: abs-reloc.s
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#as: -a64
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#ld: -melf64ppc -pie --hash-style=sysv --defsym a=1 --defsym 'HIDDEN(b=2)' --defsym c=0x123456789abcdef0
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#objdump: -sdr
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#...
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Contents of section \.got:
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.* (00000000 00018400|00840100 00000000) (00000000 00000001|01000000 00000000) .*
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.* (00000000 00000002|02000000 00000000) (12345678 9abcdef0|f0debc9a 78563412) .*
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.* (00000000 00000002|02000000 00000000) (12345678 9abcdef0|f0debc9a 78563412) .*
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.* (00000000 00000001|01000000 00000000) .*
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Contents of section \.data:
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.* (00000000 00010438|38040100 00000000) (00000000 00000001|01000000 00000000) .*
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.* (00000000 00000002|02000000 00000000) (12345678 9abcdef0|f0debc9a 78563412) .*
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#...
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.* <_start>:
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.*: (3c 4c 00 02|02 00 4c 3c) addis r2,r12,2
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.*: (38 42 82 10|10 82 42 38) addi r2,r2,-32240
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.*: (60 00 00 00|00 00 00 60) nop
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.*: (38 62 80 38|38 80 62 38) addi r3,r2,-32712
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.*: (60 00 00 00|00 00 00 60) nop
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.*: (e8 82 80 08|08 80 82 e8) ld r4,-32760\(r2\)
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.*: (60 00 00 00|00 00 00 60) nop
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.*: (e8 a2 80 10|10 80 a2 e8) ld r5,-32752\(r2\)
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.*: (60 00 00 00|00 00 00 60) nop
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.*: (e8 c2 80 18|18 80 c2 e8) ld r6,-32744\(r2\)
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.*: (60 00 00 00|00 00 00 60) nop
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.*: (38 e2 80 38|38 80 e2 38) addi r7,r2,-32712
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.*: (3d 02 00 00|00 00 02 3d) addis r8,r2,0
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.*: (e9 08 80 30|30 80 08 e9) ld r8,-32720\(r8\)
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.*: (3d 22 00 00|00 00 22 3d) addis r9,r2,0
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.*: (e9 29 80 20|20 80 29 e9) ld r9,-32736\(r9\)
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.*: (3d 42 00 00|00 00 42 3d) addis r10,r2,0
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.*: (e9 4a 80 28|28 80 4a e9) ld r10,-32728\(r10\)
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