a0d47f487f
on s390x the test elf/check-localplt is failing after recent commits: "elf: Do not use memalign for TCB/TLS blocks allocation [BZ #17730]" "elf: Avoid using memalign for TLS allocations [BZ #17730]" "elf: dl-minimal malloc needs to respect fundamental alignment" due to "Missing required PLT reference: ld.so: __libc_memalign". After the commits __libc_memalign is only called in elf/dl-minimal.c in malloc() function in ld.so and gcc -O2/-O3 leads to R_390_GLOB_DAT instead of R_390_JMP_SLOT. __libc_memalign is called via function-pointer loaded from GOT instead of calling via a plt-stub. In this case there is the R_390_GLOB_DAT relocation in section .rela.dyn instead of R_390_JMP_SLOT in .rela.plt. This patch marks ld.so: __libc_memalign with R_390_GLOB_DAT in localplt.data to allow both relocations. If build with -fno-optimize-sibling-calls or on s390(31bit) a R_390_JMP_SLOT is generated. ChangeLog: * sysdeps/unix/sysv/linux/s390/localplt.data: Mark ld.so: __libc_memalign with "+ RELA R_390_GLOB_DAT".
23 lines
907 B
Plaintext
23 lines
907 B
Plaintext
libc.so: _Unwind_Find_FDE
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libc.so: calloc
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libc.so: free
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libc.so: malloc
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libc.so: memalign
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libc.so: realloc
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libm.so: matherr
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# The dynamic loader uses __libc_memalign internally to allocate aligned
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# TLS storage. The other malloc family of functions are expected to allow
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# user symbol interposition.
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# It is also allowed to call __libc_memalign via function-pointer loaded from
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# GOT instead of calling via a plt-stub. In this case there is a R_390_GLOB_DAT
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# relocation in section .rela.dyn instead of R_390_JMP_SLOT in .rela.plt.
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# After commit "elf: Do not use memalign for TCB/TLS blocks allocation
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# [BZ #17730]" __libc_memalign is only called in elf/dl-minimal.c: malloc() in
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# ld.so and gcc -O2/-O3 leads to R_390_GLOB_DAT. If build with
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# -fno-optimize-sibling-calls an R_390_JMP_SLOT is generated.
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ld.so: __libc_memalign + RELA R_390_GLOB_DAT
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ld.so: malloc
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ld.so: calloc
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ld.so: realloc
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ld.so: free
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