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26 lines
1.1 KiB
26 lines
1.1 KiB
2 years ago
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commit 16536e98e36e08bc1ce1edbd8dd50c7c3bb7a936
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Tue May 12 11:30:30 2020 +0200
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aarch64: Accept PLT calls to __getauxval within libc.so
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When using outline atomics (-moutline-atomics, the default for ARMv8-A
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starting with GCC 10), libgcc contains an ELF constructor which calls
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__getauxval. This code is built outside of glibc, so none of its
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internal PLT avoidance schemes can be applied to it. This change
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suppresses the elf/check-localplt failure.
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diff -rup a/sysdeps/unix/sysv/linux/aarch64/localplt.data b/sysdeps/unix/sysv/linux/aarch64/localplt.data
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--- a/sysdeps/unix/sysv/linux/aarch64/localplt.data 2018-08-01 01:10:47.000000000 -0400
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+++ b/sysdeps/unix/sysv/linux/aarch64/localplt.data 2020-10-27 15:55:53.457002541 -0400
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@@ -7,6 +7,9 @@ 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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+# If outline atomics are used, libgcc (built outside of glibc) may
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+# call __getauxval using the PLT.
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+libc.so: __getauxval ?
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# The dynamic loader needs __tls_get_addr for TLS.
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ld.so: __tls_get_addr
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# The main malloc is interposed into the dynamic linker, for
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