From: Prakhar Bahuguna <prakhar.bahuguna@arm.com>
To: <newlib@sourceware.org>
Cc: <nd@arm.com>
Subject: Memory usage of __global_locale for non-locale functions
Date: Fri, 26 May 2017 13:31:00 -0000 [thread overview]
Message-ID: <20170526133112.mh6nbz2bvn6t2fp5@e107464-lin.cambridge.arm.com> (raw)
Hello,
We've noticed that since a series of patches to add support for POSIX-1.2008
per-thread locales in August 2015, the size of the .data section in binaries
produced by our toolchain has increased significantly due to the
__global_locale struct in lib_a-locale.o. This is linked in when any strto*()
function is called. This is true even for non-locale functions such as
strtoul(). Inspection of the code shows that these have been deliberately
re-architected as simple wrappers around the equivalent strto*_l(), passing in
the global C locale as the locale parameter.
As we wish to minimise code size and particularly RAM usage for microcontroller
targets which do not usually require anything beyond the C locale, would it be
possible to define a configure option that avoids linking in __global_locale,
in a manner that would not require significant engineering effort?
Alternatively, would there be a way to minimise the footprint of the
__global_locale struct for this application?
Thanks,
--
Prakhar Bahuguna
next reply other threads:[~2017-05-26 13:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-26 13:31 Prakhar Bahuguna [this message]
2017-05-26 17:52 ` Hans-Bernhard Bröker
2017-05-30 8:17 ` Prakhar Bahuguna
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