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18 Commits

Author SHA1 Message Date
Siddhesh Poyarekar
dce452dc52 Rename the glibc.tune namespace to glibc.cpu 
The glibc.tune namespace is vaguely named since it is a 'tunable', so
give it a more specific name that describes what it refers to.  Rename
the tunable namespace to 'cpu' to more accurately reflect what it
encompasses.  Also rename glibc.tune.cpu to glibc.cpu.name since
glibc.cpu.cpu is weird.

	* NEWS: Mention the change.
	* elf/dl-tunables.list: Rename tune namespace to cpu.
	* sysdeps/powerpc/dl-tunables.list: Likewise.
	* sysdeps/x86/dl-tunables.list: Likewise.
	* sysdeps/aarch64/dl-tunables.list: Rename tune.cpu to
	cpu.name.
	* elf/dl-hwcaps.c (_dl_important_hwcaps): Adjust.
	* elf/dl-hwcaps.h (GET_HWCAP_MASK): Likewise.
	* manual/README.tunables: Likewise.
	* manual/tunables.texi: Likewise.
	* sysdeps/powerpc/cpu-features.c: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/cpu-features.c
	(init_cpu_features): Likewise.
	* sysdeps/x86/cpu-features.c: Likewise.
	* sysdeps/x86/cpu-features.h: Likewise.
	* sysdeps/x86/cpu-tunables.c: Likewise.
	* sysdeps/x86_64/Makefile: Likewise.
	* sysdeps/x86/dl-cet.c: Likewise.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
 2018-08-02 23:49:19 +05:30
H.J. Lu
c92a00d865 x86: Add tst-get-cpu-features-static to $(tests) [BZ #23458] 
All tests should be added to $(tests).

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

	[BZ #23458]
	* sysdeps/x86/Makefile (tests): Add tst-get-cpu-features-static.
 2018-07-30 16:11:19 -07:00
H.J. Lu
fddcd00377 x86/CET: Add tests with legacy non-CET shared objects 
Check binary compatibility of CET-enabled executables:

1. When CET-enabled executable is used with legacy non-CET shared object
at run-time, ld.so should disable SHSTK and put legacy non-CET shared
objects in legacy bitmap.
2. When IBT-enabled executable dlopens legacy non-CET shared object,
ld.so should put legacy shared object in legacy bitmap.
3. Use GLIBC_TUNABLES=glibc.tune.x86_shstk=[on|off|permissive] to
control how SHSTK is enabled.

	* sysdeps/x86/Makefile (tests): Add tst-cet-legacy-1,
	tst-cet-legacy-2, tst-cet-legacy-2a, tst-cet-legacy-3,
	tst-cet-legacy-4, tst-cet-legacy-4a, tst-cet-legacy-4b
	and tst-cet-legacy-4c.
	(modules-names): Add tst-cet-legacy-mod-1, tst-cet-legacy-mod-2
	and tst-cet-legacy-mod-4.
	(CFLAGS-tst-cet-legacy-2.c): New.
	(CFLAGS-tst-cet-legacy-mod-1.c): Likewise.
	(CFLAGS-tst-cet-legacy-mod-2.c): Likewise.
	(CFLAGS-tst-cet-legacy-3.c): Likewise.
	(CFLAGS-tst-cet-legacy-4.c): Likewise.
	(CFLAGS-tst-cet-legacy-mod-4.c): Likewise.
	($(objpfx)tst-cet-legacy-1): Likewise.
	($(objpfx)tst-cet-legacy-2): Likewise.
	($(objpfx)tst-cet-legacy-2.out): Likewise.
	($(objpfx)tst-cet-legacy-2a): Likewise.
	($(objpfx)tst-cet-legacy-2a.out): Likewise.
	($(objpfx)tst-cet-legacy-4): Likewise.
	($(objpfx)tst-cet-legacy-4.out): Likewise.
	($(objpfx)tst-cet-legacy-4a): Likewise.
	($(objpfx)tst-cet-legacy-4a.out): Likewise.
	(tst-cet-legacy-4a-ENV): Likewise.
	($(objpfx)tst-cet-legacy-4b): Likewise.
	($(objpfx)tst-cet-legacy-4b.out): Likewise.
	(tst-cet-legacy-4b-ENV): Likewise.
	($(objpfx)tst-cet-legacy-4c): Likewise.
	($(objpfx)tst-cet-legacy-4c.out): Likewise.
	(tst-cet-legacy-4c-ENV): Likewise.
	* sysdeps/x86/tst-cet-legacy-1.c: New file.
	* sysdeps/x86/tst-cet-legacy-2.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-2a.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-3.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-4.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-4a.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-4b.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-4c.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-mod-1.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-mod-2.c: Likewise.
	* sysdeps/x86/tst-cet-legacy-mod-4.c: Likewise.
 2018-07-25 04:47:05 -07:00
H.J. Lu
f753fa7dea x86: Support IBT and SHSTK in Intel CET [BZ #21598] 
Intel Control-flow Enforcement Technology (CET) instructions:

https://software.intel.com/sites/default/files/managed/4d/2a/control-flow-en
forcement-technology-preview.pdf

includes Indirect Branch Tracking (IBT) and Shadow Stack (SHSTK).

GNU_PROPERTY_X86_FEATURE_1_IBT is added to GNU program property to
indicate that all executable sections are compatible with IBT when
ENDBR instruction starts each valid target where an indirect branch
instruction can land.  Linker sets GNU_PROPERTY_X86_FEATURE_1_IBT on
output only if it is set on all relocatable inputs.

On an IBT capable processor, the following steps should be taken:

1. When loading an executable without an interpreter, enable IBT and
lock IBT if GNU_PROPERTY_X86_FEATURE_1_IBT is set on the executable.
2. When loading an executable with an interpreter, enable IBT if
GNU_PROPERTY_X86_FEATURE_1_IBT is set on the interpreter.
  a. If GNU_PROPERTY_X86_FEATURE_1_IBT isn't set on the executable,
     disable IBT.
  b. Lock IBT.
3. If IBT is enabled, when loading a shared object without
GNU_PROPERTY_X86_FEATURE_1_IBT:
  a. If legacy interwork is allowed, then mark all pages in executable
     PT_LOAD segments in legacy code page bitmap.  Failure of legacy code
     page bitmap allocation causes an error.
  b. If legacy interwork isn't allowed, it causes an error.

GNU_PROPERTY_X86_FEATURE_1_SHSTK is added to GNU program property to
indicate that all executable sections are compatible with SHSTK where
return address popped from shadow stack always matches return address
popped from normal stack.  Linker sets GNU_PROPERTY_X86_FEATURE_1_SHSTK
on output only if it is set on all relocatable inputs.

On a SHSTK capable processor, the following steps should be taken:

1. When loading an executable without an interpreter, enable SHSTK if
GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on the executable.
2. When loading an executable with an interpreter, enable SHSTK if
GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on interpreter.
  a. If GNU_PROPERTY_X86_FEATURE_1_SHSTK isn't set on the executable
     or any shared objects loaded via the DT_NEEDED tag, disable SHSTK.
  b. Otherwise lock SHSTK.
3. After SHSTK is enabled, it is an error to load a shared object
without GNU_PROPERTY_X86_FEATURE_1_SHSTK.

To enable CET support in glibc, --enable-cet is required to configure
glibc.  When CET is enabled, both compiler and assembler must support
CET.  Otherwise, it is a configure-time error.

To support CET run-time control,

1. _dl_x86_feature_1 is added to the writable ld.so namespace to indicate
if IBT or SHSTK are enabled at run-time.  It should be initialized by
init_cpu_features.
2. For dynamic executables:
   a. A l_cet field is added to struct link_map to indicate if IBT or
      SHSTK is enabled in an ELF module.  _dl_process_pt_note or
      _rtld_process_pt_note is called to process PT_NOTE segment for
      GNU program property and set l_cet.
   b. _dl_open_check is added to check IBT and SHSTK compatibilty when
      dlopening a shared object.
3. Replace i386 _dl_runtime_resolve and _dl_runtime_profile with
_dl_runtime_resolve_shstk and _dl_runtime_profile_shstk, respectively if
SHSTK is enabled.

CET run-time control can be changed via GLIBC_TUNABLES with

$ export GLIBC_TUNABLES=glibc.tune.x86_shstk=[permissive|on|off]
$ export GLIBC_TUNABLES=glibc.tune.x86_ibt=[permissive|on|off]

1. permissive: SHSTK is disabled when dlopening a legacy ELF module.
2. on: IBT or SHSTK are always enabled, regardless if there are IBT or
SHSTK bits in GNU program property.
3. off: IBT or SHSTK are always disabled, regardless if there are IBT or
SHSTK bits in GNU program property.

<cet.h> from CET-enabled GCC is automatically included by assembly codes
to add GNU_PROPERTY_X86_FEATURE_1_IBT and GNU_PROPERTY_X86_FEATURE_1_SHSTK
to GNU program property.  _CET_ENDBR is added at the entrance of all
assembly functions whose address may be taken.  _CET_NOTRACK is used to
insert NOTRACK prefix with indirect jump table to support IBT.  It is
defined as notrack when _CET_NOTRACK is defined in <cet.h>.

	 [BZ #21598]
	* configure.ac: Add --enable-cet.
	* configure: Regenerated.
	* elf/Makefille (all-built-dso): Add a comment.
	* elf/dl-load.c (filebuf): Moved before "dynamic-link.h".
	Include <dl-prop.h>.
	(_dl_map_object_from_fd): Call _dl_process_pt_note on PT_NOTE
	segment.
	* elf/dl-open.c: Include <dl-prop.h>.
	(dl_open_worker): Call _dl_open_check.
	* elf/rtld.c: Include <dl-prop.h>.
	(dl_main): Call _rtld_process_pt_note on PT_NOTE segment.  Call
	_rtld_main_check.
	* sysdeps/generic/dl-prop.h: New file.
	* sysdeps/i386/dl-cet.c: Likewise.
	* sysdeps/unix/sysv/linux/x86/cpu-features.c: Likewise.
	* sysdeps/unix/sysv/linux/x86/dl-cet.h: Likewise.
	* sysdeps/x86/cet-tunables.h: Likewise.
	* sysdeps/x86/check-cet.awk: Likewise.
	* sysdeps/x86/configure: Likewise.
	* sysdeps/x86/configure.ac: Likewise.
	* sysdeps/x86/dl-cet.c: Likewise.
	* sysdeps/x86/dl-procruntime.c: Likewise.
	* sysdeps/x86/dl-prop.h: Likewise.
	* sysdeps/x86/libc-start.h: Likewise.
	* sysdeps/x86/link_map.h: Likewise.
	* sysdeps/i386/dl-trampoline.S (_dl_runtime_resolve): Add
	_CET_ENDBR.
	(_dl_runtime_profile): Likewise.
	(_dl_runtime_resolve_shstk): New.
	(_dl_runtime_profile_shstk): Likewise.
	* sysdeps/linux/x86/Makefile (sysdep-dl-routines): Add dl-cet
	if CET is enabled.
	(CFLAGS-.o): Add -fcf-protection if CET is enabled.
	(CFLAGS-.os): Likewise.
	(CFLAGS-.op): Likewise.
	(CFLAGS-.oS): Likewise.
	(asm-CPPFLAGS): Add -fcf-protection -include cet.h if CET
	is enabled.
	(tests-special): Add $(objpfx)check-cet.out.
	(cet-built-dso): New.
	(+$(cet-built-dso:=.note)): Likewise.
	(common-generated): Add $(cet-built-dso:$(common-objpfx)%=%.note).
	($(objpfx)check-cet.out): New.
	(generated): Add check-cet.out.
	* sysdeps/x86/cpu-features.c: Include <dl-cet.h> and
	<cet-tunables.h>.
	(TUNABLE_CALLBACK (set_x86_ibt)): New prototype.
	(TUNABLE_CALLBACK (set_x86_shstk)): Likewise.
	(init_cpu_features): Call get_cet_status to check CET status
	and update dl_x86_feature_1 with CET status.  Call
	TUNABLE_CALLBACK (set_x86_ibt) and TUNABLE_CALLBACK
	(set_x86_shstk).  Disable and lock CET in libc.a.
	* sysdeps/x86/cpu-tunables.c: Include <cet-tunables.h>.
	(TUNABLE_CALLBACK (set_x86_ibt)): New function.
	(TUNABLE_CALLBACK (set_x86_shstk)): Likewise.
	* sysdeps/x86/sysdep.h (_CET_NOTRACK): New.
	(_CET_ENDBR): Define if not defined.
	(ENTRY): Add _CET_ENDBR.
	* sysdeps/x86/dl-tunables.list (glibc.tune): Add x86_ibt and
	x86_shstk.
	* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve): Add
	_CET_ENDBR.
	(_dl_runtime_profile): Likewise.
 2018-07-16 14:08:27 -07:00
H.J. Lu
faaee1f07e x86: Support shadow stack pointer in setjmp/longjmp 
Save and restore shadow stack pointer in setjmp and longjmp to support
shadow stack in Intel CET.  Use feature_1 in tcbhead_t to check if
shadow stack is enabled before saving and restoring shadow stack pointer.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

	* sysdeps/i386/__longjmp.S: Include <jmp_buf-ssp.h>.
	(__longjmp): Restore shadow stack pointer if shadow stack is
	enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp
	isn't defined for __longjmp_cancel.
	* sysdeps/i386/bsd-_setjmp.S: Include <jmp_buf-ssp.h>.
	(_setjmp): Save shadow stack pointer if shadow stack is enabled
	and SHADOW_STACK_POINTER_OFFSET is defined.
	* sysdeps/i386/bsd-setjmp.S: Include <jmp_buf-ssp.h>.
	(setjmp): Save shadow stack pointer if shadow stack is enabled
	and SHADOW_STACK_POINTER_OFFSET is defined.
	* sysdeps/i386/setjmp.S: Include <jmp_buf-ssp.h>.
	(__sigsetjmp): Save shadow stack pointer if shadow stack is
	enabled and SHADOW_STACK_POINTER_OFFSET is defined.
	* sysdeps/unix/sysv/linux/i386/____longjmp_chk.S: Include
	<jmp_buf-ssp.h>.
	(____longjmp_chk): Restore shadow stack pointer if shadow stack
	is enabled and SHADOW_STACK_POINTER_OFFSET is defined.
	* sysdeps/unix/sysv/linux/x86/Makefile (gen-as-const-headers):
	Remove jmp_buf-ssp.sym.
	* sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Include
	<jmp_buf-ssp.h>.
	(____longjmp_chk): Restore shadow stack pointer if shadow stack
	is enabled and SHADOW_STACK_POINTER_OFFSET is defined.
	* sysdeps/x86/Makefile (gen-as-const-headers): Add
	jmp_buf-ssp.sym.
	* sysdeps/x86/jmp_buf-ssp.sym: New dummy file.
	* sysdeps/x86_64/__longjmp.S: Include <jmp_buf-ssp.h>.
	(__longjmp): Restore shadow stack pointer if shadow stack is
	enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp
	isn't defined for __longjmp_cancel.
	* sysdeps/x86_64/setjmp.S: Include <jmp_buf-ssp.h>.
	(__sigsetjmp): Save shadow stack pointer if shadow stack is
	enabled and SHADOW_STACK_POINTER_OFFSET is defined.
 2018-07-14 05:59:53 -07:00
H.J. Lu
d6cc1829aa x86: Use pad in pthread_unwind_buf to preserve shadow stack register 
The pad array in struct pthread_unwind_buf is used by setjmp to save
shadow stack register.  We assert that size of struct pthread_unwind_buf
is no less than offset of shadow stack pointer + shadow stack pointer
size.

Since functions, like LIBC_START_MAIN, START_THREAD_DEFN as well as
these with thread cancellation, call setjmp, but never return after
__libc_unwind_longjmp, __libc_unwind_longjmp, which is defined as
__libc_longjmp on x86, doesn't need to restore shadow stack register.
__libc_longjmp, which is a private interface for thread cancellation
implementation in libpthread, is changed to call __longjmp_cancel,
instead of __longjmp.  __longjmp_cancel is a new internal function
in libc, which is similar to __longjmp, but doesn't restore shadow
stack register.

The compatibility longjmp and siglongjmp in libpthread.so are changed
to call __libc_siglongjmp, instead of __libc_longjmp, so that they will
restore shadow stack register.

Tested with build-many-glibcs.py.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>

	* nptl/pthread_create.c (START_THREAD_DEFN): Clear previous
	handlers after setjmp.
	* setjmp/longjmp.c (__libc_longjmp): Don't define alias if
	defined.
	* sysdeps/unix/sysv/linux/x86/setjmpP.h: Include
	<libc-pointer-arith.h>.
	(_JUMP_BUF_SIGSET_BITS_PER_WORD): New.
	(_JUMP_BUF_SIGSET_NSIG): Changed to 96.
	(_JUMP_BUF_SIGSET_NWORDS): Changed to use ALIGN_UP and
	_JUMP_BUF_SIGSET_BITS_PER_WORD.
	* sysdeps/x86/Makefile (sysdep_routines): Add __longjmp_cancel.
	* sysdeps/x86/__longjmp_cancel.S: New file.
	* sysdeps/x86/longjmp.c: Likewise.
	* sysdeps/x86/nptl/pt-longjmp.c: Likewise.
 2018-05-02 06:17:41 -07:00
H.J. Lu
2a1f15b1a9 Remove x86 ifunc-defines.sym and rtld-global-offsets.sym 
Merge x86 ifunc-defines.sym with x86 cpu-features-offsets.sym.  Remove
x86 ifunc-defines.sym and rtld-global-offsets.sym.  No code changes on
i686 and x86-64.

	* sysdeps/i386/i686/multiarch/Makefile (gen-as-const-headers):
	Remove ifunc-defines.sym.
	* sysdeps/x86_64/multiarch/Makefile (gen-as-const-headers):
	Likewise.
	* sysdeps/i386/i686/multiarch/ifunc-defines.sym: Removed.
	* sysdeps/x86/rtld-global-offsets.sym: Likewise.
	* sysdeps/x86_64/multiarch/ifunc-defines.sym: Likewise.
	* sysdeps/x86/Makefile (gen-as-const-headers): Remove
	rtld-global-offsets.sym.
	* sysdeps/x86_64/multiarch/ifunc-defines.sym: Merged with ...
	* sysdeps/x86/cpu-features-offsets.sym: This.
	* sysdeps/x86/cpu-features.h: Include <cpu-features-offsets.h>
	instead of <ifunc-defines.h> and <rtld-global-offsets.h>.
 2016-05-11 05:51:39 -07:00
H.J. Lu
89569c8bb6 Run tst-prelink test for GLOB_DAT reloc 
Run tst-prelink test on targets with GLOB_DAT relocaton.

	* config.make.in (have-glob-dat-reloc): New.
	* configure.ac (libc_cv_has_glob_dat): New.  Set to yes if
	target supports GLOB_DAT relocaton. AC_SUBST.
	* configure: Regenerated.
	* elf/Makefile (tests): Add tst-prelink.
	(tests-special): Add $(objpfx)tst-prelink-cmp.out.
	(tst-prelink-ENV): New.
	($(objpfx)tst-prelink-conflict.out): Likewise.
	($(objpfx)tst-prelink-cmp.out): Likewise.
	* sysdeps/x86/tst-prelink.c: Moved to ...
	* elf/tst-prelink.c: Here.
	* sysdeps/x86/tst-prelink.exp: Moved to ...
	* elf/tst-prelink.exp: Here.
	* sysdeps/x86/Makefile (tests): Don't add tst-prelink.
	(tst-prelink-ENV): Removed.
	($(objpfx)tst-prelink-conflict.out): Likewise.
	($(objpfx)tst-prelink-cmp.out): Likewise.
	(tests-special): Don't add $(objpfx)tst-prelink-cmp.out.
 2015-11-14 12:00:38 -08:00
H.J. Lu
fe534fe898 Add a test for prelink output 
This test applies to i386 and x86_64 which set R_386_GLOB_DAT and
R_X86_64_GLOB_DAT to ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA.

	[BZ #19178]
	* sysdeps/x86/Makefile (tests): Add tst-prelink.
	(tst-prelink-ENV): New.
	($(objpfx)tst-prelink-conflict.out): Likewise.
	($(objpfx)tst-prelink-cmp.out): Likewise.
	(tests-special): Add $(objpfx)tst-prelink-cmp.out.
	* sysdeps/x86/tst-prelink.c: New file.
	* sysdeps/x86/tst-prelink.exp: Likewise.
 2015-11-10 12:27:24 -08:00
H.J. Lu
38d22f9f48 Don't disable SSE in x86-64 ld.so 
Since x86-64 ld.so preserves vector registers now, we can use SSE in
x86-64 ld.so.  We should run tst-ld-sse-use.sh only on i386.

	* sysdeps/x86/Makefile [$(subdir) == elf] (CFLAGS-.os,
	tests-special, $(objpfx)tst-ld-sse-use.out): Moved to ...
	* sysdeps/i386/Makefile [$(subdir) == elf] (CFLAGS-.os,
	tests-special, $(objpfx)tst-ld-sse-use.out): Here.  Update
	comments.
	* sysdeps/x86_64/Makefile [$(subdir) == elf] (CFLAGS-.os): Add
	-mno-mmx for $(all-rtld-routines).
	* sysdeps/x86/tst-ld-sse-use.sh: Moved to ...
	* sysdeps/i386/tst-ld-sse-use.sh: Here.  Replace x86-64 with
	i386.
 2015-08-26 07:55:42 -07:00
H.J. Lu
e2e4f56056 Add _dl_x86_cpu_features to rtld_global 
This patch adds _dl_x86_cpu_features to rtld_global in x86 ld.so
and initializes it early before __libc_start_main is called so that
cpu_features is always available when it is used and we can avoid
calling __init_cpu_features in IFUNC selectors.

	* sysdeps/i386/dl-machine.h: Include <cpu-features.c>.
	(dl_platform_init): Call init_cpu_features.
	* sysdeps/i386/dl-procinfo.c (_dl_x86_cpu_features): New.
	* sysdeps/i386/i686/cacheinfo.c
	(DISABLE_PREFERRED_MEMORY_INSTRUCTION): Removed.
	* sysdeps/i386/i686/multiarch/Makefile (aux): Remove init-arch.
	* sysdeps/i386/i686/multiarch/Versions: Removed.
	* sysdeps/i386/i686/multiarch/ifunc-defines.sym (KIND_OFFSET):
	Removed.
	* sysdeps/i386/ldsodefs.h: Include <cpu-features.h>.
	* sysdeps/unix/sysv/linux/x86/Makefile
	(libpthread-sysdep_routines): Remove init-arch.
	* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: Include
	<sysdeps/x86_64/dl-procinfo.c> instead of
	sysdeps/generic/dl-procinfo.c>.
	* sysdeps/x86/Makefile [$(subdir) == csu] (gen-as-const-headers):
	Add cpu-features-offsets.sym and rtld-global-offsets.sym.
	[$(subdir) == elf] (sysdep-dl-routines): Add dl-get-cpu-features.
	[$(subdir) == elf] (tests): Add tst-get-cpu-features.
	[$(subdir) == elf] (tests-static): Add
	tst-get-cpu-features-static.
	* sysdeps/x86/Versions: New file.
	* sysdeps/x86/cpu-features-offsets.sym: Likewise.
	* sysdeps/x86/cpu-features.c: Likewise.
	* sysdeps/x86/cpu-features.h: Likewise.
	* sysdeps/x86/dl-get-cpu-features.c: Likewise.
	* sysdeps/x86/libc-start.c: Likewise.
	* sysdeps/x86/rtld-global-offsets.sym: Likewise.
	* sysdeps/x86/tst-get-cpu-features-static.c: Likewise.
	* sysdeps/x86/tst-get-cpu-features.c: Likewise.
	* sysdeps/x86_64/dl-procinfo.c: Likewise.
	* sysdeps/x86_64/cacheinfo.c (__cpuid_count): Removed.
	Assume USE_MULTIARCH is defined and don't check it.
	(is_intel): Replace __cpu_features with GLRO(dl_x86_cpu_features).
	(is_amd): Likewise.
	(max_cpuid): Likewise.
	(intel_check_word): Likewise.
	(__cache_sysconf): Don't call __init_cpu_features.
	(__x86_preferred_memory_instruction): Removed.
	(init_cacheinfo): Don't call __init_cpu_features. Replace
	__cpu_features with GLRO(dl_x86_cpu_features).
	* sysdeps/x86_64/dl-machine.h: <cpu-features.c>.
	(dl_platform_init): Call init_cpu_features.
	* sysdeps/x86_64/ldsodefs.h: Include <cpu-features.h>.
	* sysdeps/x86_64/multiarch/Makefile (aux): Remove init-arch.
	* sysdeps/x86_64/multiarch/Versions: Removed.
	* sysdeps/x86_64/multiarch/cacheinfo.c: Likewise.
	* sysdeps/x86_64/multiarch/init-arch.c: Likewise.
	* sysdeps/x86_64/multiarch/ifunc-defines.sym (KIND_OFFSET):
	Removed.
	* sysdeps/x86_64/multiarch/init-arch.h: Rewrite.
 2015-08-13 03:41:22 -07:00
Joseph Myers
b7e02da4e9 Run tst-ld-sse-use.sh with bash. 
tst-ld-sse-use.sh is a bash script, not a POSIX shell script, and so
needs to be run with $(BASH) not $(SHELL) to avoid errors of the form:

../sysdeps/x86/tst-ld-sse-use.sh: 41: ../sysdeps/x86/tst-ld-sse-use.sh: declare: not found

(when /bin/sh is dash).  This patch makes that change.

Tested for x86_64.

	* sysdeps/x86/Makefile ($(objpfx)tst-ld-sse-use.out): Run script
	with $(BASH) not $(SHELL).
 2014-09-29 23:24:37 +00:00
Siddhesh Poyarekar
5379aebddd Enhance tst-xmmymm.sh to detect zmm register usage in ld.so (BZ #16194) 
2d63a517e4 added support to save and
restore zmm register in the dynamic linker, but did not enhance
test-xmmymm.sh to detect accidental usage of these registers.  The
patch below adds that check.

The script has also been renamed to tst-ld-sse-use.sh.  To see the
minimal changes, run `git show -M`.

	[BZ #16194]
	* sysdeps/x86/tst-xmmymm.sh: Rename file to...
	* sysdeps/x86/tst-ld-sse-use.sh: ... this.  Check for zmm
	register usage.
	* sysdeps/x86/Makefile: Adjust.
 2014-09-12 12:31:05 +05:30
Joseph Myers
f214606a0e Enumerate tests with special rules in tests-special variable. 
This patch is a revised and updated version of
<https://sourceware.org/ml/libc-alpha/2014-01/msg00196.html>.

In order to generate overall summaries of the results of all tests in
the glibc testsuite, we need to identify and concatenate the files
with the results of individual tests.

Tomas Dohnalek's patch used $(common-objpfx)*/*.test-result for this.
However, the normal glibc approach is explicit enumeration of the
expected set of files with a given property, rather than all files
matching some pattern like that.  Furthermore, we would like to be
able to mark tests as UNRESOLVED if the file with their results is for
some reason missing, and in future we would like to be able to mark
tests as UNSUPPORTED if they are disabled for a particular
configuration (rather than simply having them missing from the list of
tests as at present).  Such handling of tests that were not run or did
not record results requires an explicit enumeration of tests.

For the tests following the default makefile rules, $(tests) (and
$(xtests)) provides such an enumeration.  Others, however, are added
directly as dependencies of the "tests" and "xtests" makefile
targets.  This patch changes the makefiles to put them in variables
tests-special and xtests-special, with appropriate dependencies on the
tests listed there then being added centrally.

Those variables are used in Rules and so need to be set before Rules
is included in a subdirectory makefile, which is often earlier in the
makefile than the dependencies were present before.  We previously
discussed the question of where to include Rules; see the question at
<https://sourceware.org/ml/libc-alpha/2012-11/msg00798.html>, and a
discussion in
<https://sourceware.org/ml/libc-alpha/2013-01/msg00337.html> of why
Rules is included early rather than late in subdirectory makefiles.

It was necessary to avoid an indirection through the check-abi target
and get the check-abi-* targets for individual libraries into the
tests-special variable.  The intl/ test $(objpfx)tst-gettext.out,
previously built only because of dependencies from other tests, was
also added to tests-special for the same reason.

The entries in tests-special are the full makefile targets, complete
with $(objpfx) and .out.  If a future change causes tests to be named
consistently with a .out suffix, this can be changed to include just
the path relative to $(objpfx), without .out.

Tested x86_64, including that the same set of files is generated in
the build directory by a build and testsuite run both before and after
the patch (except for changes to the
elf/tst-null-argv.debug.out.<number> file name), and a build with
run-built-tests=no to verify there aren't any more obvious instances
of the issue Marcus Shawcroft reported with a previous version in
<https://sourceware.org/ml/libc-alpha/2014-01/msg00462.html>.

	* Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	(tests): Depend on $(tests-special).
	* Makerules (check-abi-list): New variable.
	(check-abi): Depend on $(check-abi-list).
	[$(subdir) = elf] (tests-special): Add
	$(objpfx)check-abi-libc.out.
	[$(build-shared) = yes && subdir] (tests-special): Add
	$(check-abi-list).
	[$(build-shared) = yes && subdir] (tests): Do not depend on
	check-abi.
	* Rules (tests): Depend on $(tests-special).
	(xtests): Depend on $(xtests-special).
	* catgets/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* conform/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* elf/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* grp/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* iconv/Makefile (xtests): Change dependencies to ....
	(xtests-special): ... additions to this variable.
	* iconvdata/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* intl/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.  Also add
	$(objpfx)tst-gettext.out.
	* io/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* libio/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* malloc/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* misc/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* nptl/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* nptl_db/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* posix/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	(xtests): Change dependencies to ....
	(xtests-special): ... additions to this variable.
	* resolv/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	(xtests): Change dependencies to ....
	(xtests-special): ... additions to this variable.
	* stdio-common/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	(do-tst-unbputc): Remove target.
	(do-tst-printf): Likewise.
	* stdlib/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* string/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* sysdeps/x86/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.

localedata:
	* Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
 2014-03-06 22:35:33 +00:00
Joseph Myers
f0881698bf Generate .test-result files for tests with special rules. 
This patch, an updated version of
<https://sourceware.org/ml/libc-alpha/2014-01/msg00194.html> now
proposed for inclusion in glibc, extends the generation of PASS and
FAIL status in .test-result files for individual tests to cover tests
with their own custom makefile rules.  This is just adding
$(evaluate-test) calls to all such rules, since tests with multiple
commands were previously split into separate tests.

Note that the tests the makefiles expect to fail (posix/annexc and
conformtest) currently get FAIL listed in the .test-result file,
rather than XFAIL; a subsequent patch will introduce a better XFAIL
mechanism.

Tested x86_64.

	* Makefile ($(objpfx)c++-types-check.out): Use $(evaluate-test).
	($(objpfx)check-local-headers.out): Likewise.
	($(objpfx)begin-end-check.out): Likewise.
	* Makerules (check-abi-%.out): Likewise.
	* catgets/Makefile ($(objpfx)test1.cat): Likewise.
	($(objpfx)test2.cat): Likewise.
	($(objpfx)de/libc.cat): Likewise.
	($(objpfx)test-gencat.out): Likewise.
	* conform/Makefile ($(objpfx)run-conformtest.out): Likewise.
	* elf/Makefile ($(objpfx)order-cmp.out): Likewise.
	($(objpfx)noload-mem): Likewise.
	($(objpfx)tst-pathopt.out): Likewise.
	($(objpfx)tst-rtld-load-self.out): Likewise.
	($(objpfx)tst-array1-cmp.out): Likewise.
	($(objpfx)tst-array1-static-cmp.out): Likewise.
	($(objpfx)tst-array2-cmp.out): Likewise.
	($(objpfx)tst-array3-cmp.out): Likewise.
	($(objpfx)tst-array4-cmp.out): Likewise.
	($(objpfx)tst-array5-cmp.out): Likewise.
	($(objpfx)tst-array5-static-cmp.out): Likewise.
	($(objpfx)check-textrel.out): Likewise.
	($(objpfx)check-execstack.out): Likewise.
	($(objpfx)check-localplt.out): Likewise.
	($(objpfx)order2-cmp.out): Likewise.
	($(objpfx)tst-leaks1-mem): Likewise.
	($(objpfx)tst-leaks1-static-mem): Likewise.
	($(objpfx)tst-initorder-cmp.out): Likewise.
	($(objpfx)tst-initorder2-cmp.out): Likewise.
	($(objpfx)tst-unused-dep.out): Likewise.
	($(objpfx)tst-unused-dep-cmp.out): Likewise.
	* grp/Makefile ($(objpfx)tst_fgetgrent.out): Likewise.
	* iconv/Makefile (test-iconvconfig): Likewise.
	* iconvdata/Makefile ($(objpfx)mtrace-tst-loading): Likewise.
	($(objpfx)iconv-test.out): Likewise.
	($(objpfx)tst-tables.out): Likewise.
	* intl/Makefile ($(objpfx)mtrace-tst-gettext): Likewise.
	($(objpfx)tst-gettext.out): Likewise.
	($(objpfx)tst-translit.out): Likewise.
	($(objpfx)tst-gettext2.out): Likewise.
	($(objpfx)tst-gettext4.out): Likewise.
	($(objpfx)tst-gettext6.out): Likewise.
	* io/Makefile ($(objpfx)ftwtest.out): Likewise.
	* libio/Makefile ($(objpfx)test-freopen.out): Likewise.
	($(objpfx)tst-fopenloc-cmp.out): Likewise.
	($(objpfx)tst-fopenloc-mem.out): Likewise.
	* malloc/Makefile ($(objpfx)tst-mtrace.out): Likewise.
	* misc/Makefile ($(objpfx)tst-error1-mem): Likewise.
	* posix/Makefile ($(objpfx)globtest.out): Likewise.
	($(objpfx)wordexp-tst.out): Likewise.
	($(objpfx)annexc.out): Likewise.
	($(objpfx)tst-fnmatch-mem): Likewise.
	($(objpfx)bug-regex2-mem): Likewise.
	($(objpfx)bug-regex14-mem): Likewise.
	($(objpfx)bug-regex21-mem): Likewise.
	($(objpfx)bug-regex31-mem): Likewise.
	($(objpfx)tst-vfork3-mem): Likewise.
	($(objpfx)tst-rxspencer-no-utf8-mem): Likewise.
	($(objpfx)tst-pcre-mem): Likewise.
	($(objpfx)tst-boost-mem): Likewise.
	($(objpfx)tst-getconf.out): Likewise.
	($(objpfx)bug-ga2-mem): Likewise.
	($(objpfx)bug-glob2-mem): Likewise.
	* resolv/Makefile ($(objpfx)mtrace-tst-leaks): Likewise.
	($(objpfx)mtrace-tst-leaks2): Likewise.
	* stdio-common/Makefile ($(objpfx)tst-unbputc.out): Likewise.
	($(objpfx)tst-printf.out): Likewise.
	($(objpfx)tst-setvbuf1.out): Likewise.
	($(objpfx)tst-setvbuf1-cmp.out): Likewise.
	* stdlib/Makefile ($(objpfx)isomac.out): Likewise.
	($(objpfx)tst-fmtmsg.out): Likewise.
	* string/Makefile ($(objpfx)tst-svc-cmp.out): Likewise.
	* sysdeps/x86/Makefile ($(objpfx)tst-xmmymm.out): Likewise.

localedata:
	* Makefile ($(objpfx)sort-test.out): Use $(evaluate-test).
	($(objpfx)tst-fmon.out): Likewise.
	($(objpfx)tst-numeric.out): Likewise.
	($(objpfx)tst-locale.out): Likewise.
	($(objpfx)tst-rpmatch.out): Likewise.
	($(objpfx)tst-trans.out): Likewise.
	($(objpfx)tst-mbswcs.out): Likewise.
	($(objpfx)tst-ctype.out): Likewise.
	($(objpfx)tst-wctype.out): Likewise.
	($(objpfx)tst-langinfo.out): Likewise.
	($(objpfx)mtrace-tst-leaks): Likewise.

nptl:
	* Makefile ($(objpfx)tst-stack3-mem): Use $(evaluate-test).
	($(objpfx)tst-tls6.out): Likewise.
	($(objpfx)tst-cleanup0.out): Likewise.
	($(objpfx)tst-cleanup0-cmp.out): Likewise.
	($(objpfx)tst-cancel-wrappers.out): Likewise.
	($(objpfx)tst-oddstacklimit.out): Likewise.

nptl_db:
	* Makefile ($(objpfx)db-symbols.out): Use
	$(evaluate-test).
 2014-02-21 21:48:08 +00:00
Joseph Myers
0fbb0fbc2e Use configured $(NM), $(OBJDUMP), $(READELF) in tst-xmmymm.sh. 2012-11-08 00:01:46 +00:00
H.J. Lu
eb48db7e89 Also run tst-xmmymm.sh on i386 ld.so 2012-11-07 13:50:08 -08:00
H.J. Lu
f62c8abcfb Compile x86 rtld with -mno-sse -mno-mmx 2012-11-02 18:43:27 -07:00