| Message ID | 87h7wlzbji.fsf@mid.deneb.enyo.de |
|---|---|
| State | New |
| Headers | show |
| Series | aarch64: Accept PLT calls to __getauxval within libc.so | expand |
The 05/12/2020 12:34, Florian Weimer wrote: > When using outline atomics (-moutline-atomics, the default for ARMv8-A > starting with GCC 10), libgcc contains an ELF constructor which calls > __getauxval. This code is built outside of glibc, so none of its > internal PLT avoidance schemes can be applied to it. This change > suppresses the elf/check-localplt failure. This is ok thanks. > > ----- > sysdeps/unix/sysv/linux/aarch64/localplt.data | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/sysdeps/unix/sysv/linux/aarch64/localplt.data b/sysdeps/unix/sysv/linux/aarch64/localplt.data > index 56f362d3a7..2c14b652ef 100644 > --- a/sysdeps/unix/sysv/linux/aarch64/localplt.data > +++ b/sysdeps/unix/sysv/linux/aarch64/localplt.data > @@ -7,6 +7,9 @@ libc.so: malloc > libc.so: memalign > libc.so: realloc > libm.so: matherr > +# If outline atomics are used, libgcc (built outside of glibc) may > +# call __getauxval using the PLT. > +libc.so: __getauxval ? > # The dynamic loader needs __tls_get_addr for TLS. > ld.so: __tls_get_addr > # The TLS-enabled version of these functions is interposed from libc.so. --
diff --git a/sysdeps/unix/sysv/linux/aarch64/localplt.data b/sysdeps/unix/sysv/linux/aarch64/localplt.data index 56f362d3a7..2c14b652ef 100644 --- a/sysdeps/unix/sysv/linux/aarch64/localplt.data +++ b/sysdeps/unix/sysv/linux/aarch64/localplt.data @@ -7,6 +7,9 @@ libc.so: malloc libc.so: memalign libc.so: realloc libm.so: matherr +# If outline atomics are used, libgcc (built outside of glibc) may +# call __getauxval using the PLT. +libc.so: __getauxval ? # The dynamic loader needs __tls_get_addr for TLS. ld.so: __tls_get_addr # The TLS-enabled version of these functions is interposed from libc.so.