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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-07-12 06:29:54 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-07-12 06:30:08 -0700 |
| commit | 61655555aa8c2cd5f5351ef7d0aea6dfce046135 (patch) | |
| tree | 9bdbc75cb7087328948fda4cbde2f784dbd90bba /elf/Makefile | |
| parent | cf1ad5b3add36790cbf58a3972c492a8f1632929 (diff) | |
| download | glibc-61655555aa8c2cd5f5351ef7d0aea6dfce046135.tar.gz glibc-61655555aa8c2cd5f5351ef7d0aea6dfce046135.tar.xz glibc-61655555aa8c2cd5f5351ef7d0aea6dfce046135.zip | |
x86-64: Properly align stack in _dl_tlsdesc_dynamic [BZ #20309]
Since _dl_tlsdesc_dynamic is called via PLT, we need to add 8 bytes for push in the PLT entry to align the stack. [BZ #20309] * configure.ac (have-mtls-dialect-gnu2): Set to yes if -mtls-dialect=gnu2 works. * configure: Regenerated. * elf/Makefile [have-mtls-dialect-gnu2 = yes] (tests): Add tst-gnu2-tls1. (modules-names): Add tst-gnu2-tls1mod. ($(objpfx)tst-gnu2-tls1): New. (tst-gnu2-tls1mod.so-no-z-defs): Likewise. (CFLAGS-tst-gnu2-tls1mod.c): Likewise. * elf/tst-gnu2-tls1.c: New file. * elf/tst-gnu2-tls1mod.c: Likewise. * sysdeps/x86_64/dl-tlsdesc.S (_dl_tlsdesc_dynamic): Add 8 bytes for push in the PLT entry to align the stack.
Diffstat (limited to 'elf/Makefile')
| -rw-r--r-- | elf/Makefile | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/elf/Makefile b/elf/Makefile index 210dde941c..593403c640 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -224,6 +224,13 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ tst-tlsalign-lib tst-nodelete-opened-lib tst-nodelete2mod \ tst-audit11mod1 tst-audit11mod2 tst-auditmod11 \ tst-audit12mod1 tst-audit12mod2 tst-audit12mod3 tst-auditmod12 +ifeq (yes,$(have-mtls-dialect-gnu2)) +tests += tst-gnu2-tls1 +modules-names += tst-gnu2-tls1mod +$(objpfx)tst-gnu2-tls1: $(objpfx)tst-gnu2-tls1mod.so +tst-gnu2-tls1mod.so-no-z-defs = yes +CFLAGS-tst-gnu2-tls1mod.c += -mtls-dialect=gnu2 +endif ifeq (yes,$(have-protected-data)) modules-names += tst-protected1moda tst-protected1modb tests += tst-protected1a tst-protected1b |