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Author SHA1 Message Date
H.J. Lu 17cef890c9 support: Replace _SC_MINSIGSTKSZ with _SC_SIGSTKSZ 
Replace _SC_MINSIGSTKSZ with _SC_SIGSTKSZ since sysconf (_SC_MINSIGSTKSZ)
returns the minimum number of bytes of free stack space required in order
to guarantee successful, non-nested handling of a single signal whose
handler is an empty function while sysconf (_SC_SIGSTKSZ) returns the
suggested minimum number of bytes of stack space required for a signal
stack.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
 2021-07-11 07:57:31 -07:00
H.J. Lu 28d07380c2 support: Replace MINSIGSTKSZ with sysconf (_SC_MINSIGSTKSZ) 
Replace MINSIGSTKSZ with sysconf (_SC_MINSIGSTKSZ) since the constant
MINSIGSTKSZ used in glibc build may be too small.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
 2021-07-09 15:20:55 -07:00
Adhemerval Zanella ae8c243d24 support: Add support_stack_alloc 
The code to allocate a stack from xsigstack is refactored so it can
be more generic.  The new support_stack_alloc() also set PROT_EXEC
if DEFAULT_STACK_PERMS has PF_X.  This is required on some
 architectures (hppa for instance) and trying to access the rtld
global from testsuite will require more intrusive refactoring
in the ldsodefs.h header.

Checked on x86_64-linux-gnu and i686-linux-gnu.  I also ran
tst-xsigstack on both hppa and ia64.
 2021-07-08 13:48:06 -03:00