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authorH.J. Lu <hjl.tools@gmail.com>2016-07-12 06:29:54 -0700
committerH.J. Lu <hjl.tools@gmail.com>2016-07-12 06:30:08 -0700
commit61655555aa8c2cd5f5351ef7d0aea6dfce046135 (patch)
tree9bdbc75cb7087328948fda4cbde2f784dbd90bba /NEWS
parentcf1ad5b3add36790cbf58a3972c492a8f1632929 (diff)
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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 'NEWS')
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