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a364304718
glibc/sysdeps/i386
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H.J. Lu a364304718 x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers 
Compiler generates the following instruction sequence for GNU2 dynamic
TLS access:

	leaq	tls_var@TLSDESC(%rip), %rax
	call	*tls_var@TLSCALL(%rax)

or

	leal	tls_var@TLSDESC(%ebx), %eax
	call	*tls_var@TLSCALL(%eax)

CALL instruction is transparent to compiler which assumes all registers,
except for EFLAGS and RAX/EAX, are unchanged after CALL.  When
_dl_tlsdesc_dynamic is called, it calls __tls_get_addr on the slow
path.  __tls_get_addr is a normal function which doesn't preserve any
caller-saved registers.  _dl_tlsdesc_dynamic saved and restored integer
caller-saved registers, but didn't preserve any other caller-saved
registers.  Add _dl_tlsdesc_dynamic IFUNC functions for FNSAVE, FXSAVE,
XSAVE and XSAVEC to save and restore all caller-saved registers.  This
fixes BZ #31372.

Add GLRO(dl_x86_64_runtime_resolve) with GLRO(dl_x86_tlsdesc_dynamic)
to optimize elf_machine_runtime_setup.
Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>

(cherry picked from commit 0aac205a81)
2024-04-01 10:42:25 -07:00
..
fpu math: remove exp10 wrappers 2024-01-12 16:02:12 +00:00
htl Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
i586 Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
i686 i386: Remove CET support 2024-01-09 13:55:51 -03:00
i786
nptl Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sys Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
____longjmp_chk.S
__longjmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
abort-instr.h
add_n.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
addmul_1.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
asm-syntax.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
backtrace.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
bsd-_setjmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
bsd-setjmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
configure i386: Fail if configured with --enable-cet 2024-01-09 13:55:51 -03:00
configure.ac i386: Fail if configured with --enable-cet 2024-01-09 13:55:51 -03:00
crti.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
crtn.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-fixup-attribute.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-irel.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-machine-rel.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-machine.h x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers 2024-04-01 10:42:25 -07:00
dl-procinfo.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-tls.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-tlsdesc-dynamic.h x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers 2024-04-01 10:42:25 -07:00
dl-tlsdesc.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
dl-tlsdesc.S x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers 2024-04-01 10:42:25 -07:00
dl-trampoline.S i386: Remove CET support bits 2024-01-10 05:20:20 -08:00
ffs.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
gccframe.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
i386-mcount.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
Implies
isa.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
link-defines.sym elf: Remove Intel MPX support (lazy PLT, ld.so profile, and LD_AUDIT) 2021-10-11 11:14:02 -07:00
lshift.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
machine-gmon.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
Makefile mcheck: Align struct hdr to MALLOC_ALIGNMENT bytes [BZ #28068] 2021-07-12 18:13:32 -07:00
malloc-alignment.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memchr.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memcmp.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memcopy.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memcpy_chk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memcpy.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memmove_chk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memmove.S
mempcpy_chk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
mempcpy.S
memset_chk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
memset.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
mp_clz_tab.c
mul_1.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
preconfigure
pthread_spin_trylock.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
rawmemchr.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
rshift.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
setfpucw.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
setjmp.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
stackguard-macros.h
stackinfo.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
start.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
stpcpy.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stpncpy.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strcat.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strchr.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strchrnul.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strcspn.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
string-inlines.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
string-opthr.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strlen.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strlen.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strpbrk.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strrchr.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
strspn.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sub_n.S i386: Remove CET support 2024-01-09 13:55:51 -03:00
submul_1.S Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
symbol-hacks.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sysdep.h i386: Remove CET support 2024-01-09 13:55:51 -03:00
tlsdesc.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tlsdesc.sym
tst-audit3.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-audit3.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-audit.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-auditmod3a.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-auditmod3b.c Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
tst-ld-sse-use.sh Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
unwind-arch.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
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