diff options
| author | Ryan S. Arnold <rsa@linux.vnet.ibm.com> | 2013-06-13 14:13:39 -0500 |
|---|---|---|
| committer | Ryan S. Arnold <rsa@linux.vnet.ibm.com> | 2013-06-13 14:13:39 -0500 |
| commit | 1212598c9429674994da64b3a17375471d809677 (patch) | |
| tree | 7bde46b6ded3a270df7a8b649414eb75b64240f4 /elf/dl-support.c | |
| parent | c204ab284bc3ef492f5a5201bd6131032bfd471a (diff) | |
| download | glibc-rsa/hwcap2_v4.tar.gz | |
Add support for AT_HWCAP2.rsa/hwcap2_v4
Diffstat (limited to 'elf/dl-support.c')
| -rw-r--r-- | elf/dl-support.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/elf/dl-support.c b/elf/dl-support.c index b3ab9560ad..208bc6b54f 100644 --- a/elf/dl-support.c +++ b/elf/dl-support.c @@ -194,6 +194,10 @@ _dl_aux_init (ElfW(auxv_t) *av) uid_t uid = 0; gid_t gid = 0; + /* Don't rely on a specific order of AT_HWCAP and AT_HWCAP2. Collate into a + zeroed temp and assign to _dl_hwcap after the auxv has been parsed. */ + uint64_t hwcap = 0; + _dl_auxv = av; for (; av->a_type != AT_NULL; ++av) switch (av->a_type) @@ -212,8 +216,12 @@ _dl_aux_init (ElfW(auxv_t) *av) GL(dl_phnum) = av->a_un.a_val; break; case AT_HWCAP: - GLRO(dl_hwcap) = (unsigned long int) av->a_un.a_val; + hwcap |= (unsigned long int) av->a_un.a_val; + break; + case AT_HWCAP2: + hwcap |= (uint64_t) av->a_un.a_val << 32; break; + #ifdef NEED_DL_SYSINFO case AT_SYSINFO: GL(dl_sysinfo) = av->a_un.a_val; @@ -252,6 +260,9 @@ _dl_aux_init (ElfW(auxv_t) *av) DL_PLATFORM_AUXV # endif } + + GLRO(dl_hwcap) = hwcap; + if (seen == 0xf) { __libc_enable_secure = uid != 0 || gid != 0; |