From ea9b0ecbf0e7b6e8281047624efbe1b2cbb6d487 Mon Sep 17 00:00:00 2001 From: Siddhesh Poyarekar Date: Mon, 17 Apr 2017 10:00:35 +0530 Subject: tunables: Add LD_HWCAP_MASK to tunables Add LD_HWCAP_MASK to tunables in preparation of it being removed from rtld.c. This allows us to read LD_HWCAP_MASK much earlier so that it can influence IFUNC resolution in aarch64. This patch does not actually do anything other than read the LD_HWCAP_MASK variable and add the tunables way to set the LD_HWCAP_MASK, i.e. via the glibc.tune.hwcap_mask tunable. In a follow-up patch, the _dl_hwcap_mask will be replaced with glibc.tune.hwcap_mask to complete the transition. * elf/dl-tunables.list: Add glibc.tune.hwcap_mask. * scripts/gen-tunables.awk: Include dl-procinfo.h. * manual/tunables.texi: Document glibc.tune.hwcap_mask. --- elf/dl-tunables.list | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'elf') diff --git a/elf/dl-tunables.list b/elf/dl-tunables.list index b9f1488798..41ce9afa28 100644 --- a/elf/dl-tunables.list +++ b/elf/dl-tunables.list @@ -77,4 +77,11 @@ glibc { security_level: SXID_IGNORE } } + tune { + hwcap_mask { + type: UINT_64 + env_alias: LD_HWCAP_MASK + default: HWCAP_IMPORTANT + } + } } -- cgit 1.4.1