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https://sourceware.org/git/glibc.git
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031e519c95
This change forces realignment of the stack pointer in __tls_get_addr, so that binaries compiled by GCCs older than GCC 4.9: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066 continue to work even if vector instructions are used in glibc which require the ABI stack realignment. __tls_get_addr_slow is added to handle the slow paths in the default implementation of__tls_get_addr in elf/dl-tls.c. The new __tls_get_addr calls __tls_get_addr_slow after realigning the stack. Internal calls within ld.so go directly to the default implementation of __tls_get_addr because they do not need stack realignment. [BZ #21609] * sysdeps/x86_64/Makefile (sysdep-dl-routines): Add tls_get_addr. (gen-as-const-headers): Add rtld-offsets.sym. * sysdeps/x86_64/dl-tls.c: New file. * sysdeps/x86_64/rtld-offsets.sym: Likwise. * sysdeps/x86_64/tls_get_addr.S: Likewise. * sysdeps/x86_64/dl-tls.h: Add multiple inclusion guards. * sysdeps/x86_64/tlsdesc.sym (TI_MODULE_OFFSET): New. (TI_OFFSET_OFFSET): Likwise.
125 lines
4.0 KiB
Makefile
125 lines
4.0 KiB
Makefile
# The i387 `long double' is a distinct type we support.
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long-double-fcts = yes
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ifeq ($(subdir),csu)
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gen-as-const-headers += link-defines.sym
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endif
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ifeq ($(subdir),gmon)
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sysdep_routines += _mcount
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# We cannot compile _mcount.S with -pg because that would create
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# recursive calls when ENTRY is used. Just copy the normal static
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# object.
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sysdep_noprof += _mcount
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endif
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ifeq ($(subdir),malloc)
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tests += tst-mallocalign1
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endif
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ifeq ($(subdir),string)
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sysdep_routines += cacheinfo strcasecmp_l-nonascii strncase_l-nonascii
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gen-as-const-headers += locale-defines.sym
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endif
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ifeq ($(subdir),elf)
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# There is no good reason to use MMX in x86-64 ld.so with GCC.
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CFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\
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-mno-mmx)
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sysdep-dl-routines += tlsdesc dl-tlsdesc tls_get_addr
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tests += ifuncmain8
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modules-names += ifuncmod8
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$(objpfx)ifuncmain8: $(objpfx)ifuncmod8.so
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tests += tst-quad1 tst-quad2
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modules-names += tst-quadmod1 tst-quadmod2
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$(objpfx)tst-quad1: $(objpfx)tst-quadmod1.so
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$(objpfx)tst-quad2: $(objpfx)tst-quadmod2.so
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quad-pie-test += tst-quad1pie tst-quad2pie
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tests += $(quad-pie-test)
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tests-pie += $(quad-pie-test)
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test-extras += tst-quadmod1pie tst-quadmod2pie
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extra-test-objs += tst-quadmod1pie.o tst-quadmod2pie.o
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$(objpfx)tst-quad1pie: $(objpfx)tst-quadmod1pie.o
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$(objpfx)tst-quad2pie: $(objpfx)tst-quadmod2pie.o
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CFLAGS-tst-quad1pie.c = $(PIE-ccflag)
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CFLAGS-tst-quad2pie.c = $(PIE-ccflag)
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tests += tst-audit3 tst-audit4 tst-audit5 tst-audit6 tst-audit7 \
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tst-audit10 tst-sse tst-avx tst-avx512
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test-extras += tst-audit4-aux tst-audit10-aux \
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tst-avx-aux tst-avx512-aux
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extra-test-objs += tst-audit4-aux.o tst-audit10-aux.o \
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tst-avx-aux.o tst-avx512-aux.o
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tests += tst-split-dynreloc
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LDFLAGS-tst-split-dynreloc = -Wl,-T,$(..)sysdeps/x86_64/tst-split-dynreloc.lds
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tst-split-dynreloc-ENV = LD_BIND_NOW=1
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modules-names += tst-auditmod3a tst-auditmod3b \
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tst-auditmod4a tst-auditmod4b \
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tst-auditmod5a tst-auditmod5b \
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tst-auditmod6a tst-auditmod6b tst-auditmod6c \
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tst-auditmod7a tst-auditmod7b \
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tst-auditmod10a tst-auditmod10b \
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tst-ssemod tst-avxmod tst-avx512mod
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$(objpfx)tst-audit3: $(objpfx)tst-auditmod3a.so
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$(objpfx)tst-audit3.out: $(objpfx)tst-auditmod3b.so
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tst-audit3-ENV = LD_AUDIT=$(objpfx)tst-auditmod3b.so
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$(objpfx)tst-audit4: $(objpfx)tst-audit4-aux.o $(objpfx)tst-auditmod4a.so
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$(objpfx)tst-audit4.out: $(objpfx)tst-auditmod4b.so
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tst-audit4-ENV = LD_AUDIT=$(objpfx)tst-auditmod4b.so
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$(objpfx)tst-audit5: $(objpfx)tst-auditmod5a.so
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$(objpfx)tst-audit5.out: $(objpfx)tst-auditmod5b.so
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tst-audit5-ENV = LD_AUDIT=$(objpfx)tst-auditmod5b.so
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$(objpfx)tst-audit6: $(objpfx)tst-auditmod6a.so
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$(objpfx)tst-audit6.out: $(objpfx)tst-auditmod6b.so \
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$(objpfx)tst-auditmod6c.so
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tst-audit6-ENV = LD_AUDIT=$(objpfx)tst-auditmod6b.so:$(objpfx)tst-auditmod6c.so
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$(objpfx)tst-audit7: $(objpfx)tst-auditmod7a.so
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$(objpfx)tst-audit7.out: $(objpfx)tst-auditmod7b.so
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tst-audit7-ENV = LD_AUDIT=$(objpfx)tst-auditmod7b.so
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$(objpfx)tst-audit10: $(objpfx)tst-audit10-aux.o $(objpfx)tst-auditmod10a.so
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$(objpfx)tst-audit10.out: $(objpfx)tst-auditmod10b.so
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tst-audit10-ENV = LD_AUDIT=$(objpfx)tst-auditmod10b.so
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$(objpfx)tst-sse: $(objpfx)tst-ssemod.so
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$(objpfx)tst-avx: $(objpfx)tst-avx-aux.o $(objpfx)tst-avxmod.so
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$(objpfx)tst-avx512: $(objpfx)tst-avx512-aux.o $(objpfx)tst-avx512mod.so
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AVX-CFLAGS=-mavx -mno-vzeroupper
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CFLAGS-tst-audit4-aux.c += $(AVX-CFLAGS)
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CFLAGS-tst-auditmod4a.c += $(AVX-CFLAGS)
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CFLAGS-tst-auditmod4b.c += $(AVX-CFLAGS)
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CFLAGS-tst-auditmod6b.c += $(AVX-CFLAGS)
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CFLAGS-tst-auditmod6c.c += $(AVX-CFLAGS)
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CFLAGS-tst-auditmod7b.c += $(AVX-CFLAGS)
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CFLAGS-tst-avx-aux.c += $(AVX-CFLAGS)
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CFLAGS-tst-avxmod.c += $(AVX-CFLAGS)
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ifeq (yes,$(config-cflags-avx512))
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AVX512-CFLAGS = -mavx512f
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CFLAGS-tst-audit10-aux.c += $(AVX512-CFLAGS)
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CFLAGS-tst-auditmod10a.c += $(AVX512-CFLAGS)
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CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
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CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
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CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
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endif
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endif
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ifeq ($(subdir),csu)
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gen-as-const-headers += tlsdesc.sym rtld-offsets.sym
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endif
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