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| author | H.J. Lu <hjl.tools@gmail.com> | 2015-05-07 13:26:34 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-06-24 16:30:58 -0700 |
| commit | a7fcc2f8edb26e4d54b6a740aaa3f3bb0caebd14 (patch) | |
| tree | 93de3ec2350c8af7ccc5927071f38382be139de2 /csu | |
| parent | f9536db79065ad00efd877b4d80a1dd06938bd0a (diff) | |
| download | glibc-a7fcc2f8edb26e4d54b6a740aaa3f3bb0caebd14.zip glibc-a7fcc2f8edb26e4d54b6a740aaa3f3bb0caebd14.tar.gz glibc-a7fcc2f8edb26e4d54b6a740aaa3f3bb0caebd14.tar.bz2 | |
Align TCB offset to the maximum alignment
We need to align TCB offset to the maximum alignment for TLS_TCB_AT_TP
targets, as _dl_allocate_tls_storage (in elf/dl-tls.c) does using
__libc_memalign and dl_tls_static_align.
[BZ #18383]
* csu/libc-tls.c (__libc_setup_tls) [TLS_TCB_AT_TP]: Align
TCB_OFFSET to MAX_ALIGN, not just TCBALIGN. Add comment.
* elf/Makefile (test-xfail-tst-tlsalign{,-static}): Remove
comment for i386/x86-64.
(test-xfail-tst-tlsalign-extern-static): Removed.
Diffstat (limited to 'csu')
| -rw-r--r-- | csu/libc-tls.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/csu/libc-tls.c b/csu/libc-tls.c index 64d1779..3f13425 100644 --- a/csu/libc-tls.c +++ b/csu/libc-tls.c @@ -138,7 +138,10 @@ __libc_setup_tls (size_t tcbsize, size_t tcbalign) to request some surplus that permits dynamic loading of modules with IE-model TLS. */ #if TLS_TCB_AT_TP - tcb_offset = roundup (memsz + GL(dl_tls_static_size), tcbalign); + /* Align the TCB offset to the maximum alignment, as + _dl_allocate_tls_storage (in elf/dl-tls.c) does using __libc_memalign + and dl_tls_static_align. */ + tcb_offset = roundup (memsz + GL(dl_tls_static_size), max_align); tlsblock = __sbrk (tcb_offset + tcbsize + max_align); #elif TLS_DTV_AT_TP tcb_offset = roundup (tcbsize, align ?: 1); |