float_t supposedly represents the type that is used to evaluate float
expressions internally. While the isa supports single-precision float
operations, the port of glibc to s390 incorrectly deferred to the
generic definitions which, back then, tied float_t to double. gcc by
default evaluates float in single precision, so that scenario violates
the C standard (sections 5.2.4.2.2 and 7.12 in C11/C17). With
-fexcess-precision=standard, gcc evaluates float in double precision,
which aligns with the standard yet at the cost of added conversion
instructions.
With this patch, we drop the s390-specific definition of float_t and
defer to the default behavior, which aligns float_t with the
compiler-defined FLT_EVAL_METHOD in a standard-compliant way.
Checked on s390x-linux-gnu with 31-bit and 64-bit builds.
Now __thread_gscope_wait (the function behind THREAD_GSCOPE_WAIT,
formerly __wait_lookup_done) can be implemented directly in ld.so,
eliminating the unprotected GL (dl_wait_lookup_done) function
pointer.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
There are several compiler implementations that allow large stack
allocations to jump over the guard page at the end of the stack and
corrupt memory beyond that. See CVE-2017-1000364.
Compilers can emit code to probe the stack such that the guard page
cannot be skipped, but on aarch64 the probe interval is 64K by default
instead of the minimum supported page size (4K).
This patch enforces at least 64K guard on aarch64 unless the guard
is disabled by setting its size to 0. For backward compatibility
reasons the increased guard is not reported, so it is only observable
by exhausting the address space or parsing /proc/self/maps on linux.
On other targets the patch has no effect. If the stack probe interval
is larger than a page size on a target then ARCH_MIN_GUARD_SIZE can
be defined to get large enough stack guard on libc allocated stacks.
The patch does not affect threads with user allocated stacks.
Fixes bug 26691.
Unfortunately some HWCAP names like HWCAP_S390_VX differs between
kernel (see <kernel>/arch/s390/include/asm/elf.h) and glibc.
Therefore, those HWCAP names from kernel are now introduced as alias
It turned out that an 256b-mvc instruction which depends on the
result of a previous 256b-mvc instruction is counterproductive.
Therefore this patch adjusts the 256b-loop by storing the
first byte with stc and setting the remaining 255b with mvc.
Now the 255b-mvc instruction depends on the stc instruction.
This patch introduces an extra loop without pfd instructions
as it turned out that the pfd instructions are usefull
for copies >=64KB but are counterproductive for smaller copies.
Each symbol definitions are moved on a separated file and it
cover all symbol type definitions (float, double, long double,
and float128).
It allows to set support for architectures without the boiler
place of copying default values.
Checked with a build on the affected ABIs.
This consolidates the copy-pasted arch specific semaphore header into
single version (based on s390) which suffices 32-bit and and 64-bit
arch/ABI based on the canonical WORDSIZE.
For now I've left out arches which use alternate defines to choose for
32 vs 64-bit builds (aarch64, mips) which in theory can also use the same
header.
Passes build-many for
aarch64-linux-gnu arm-linux-gnueabi arm-linux-gnueabihf
riscv64-linux-gnu-rv64imac-lp64 riscv64-linux-gnu-rv64imafdc-lp64
x86_64-linux-gnu microblaze-linux-gnu nios2-linux-gnu
Suggested-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Most gmp-mparam.h headers in glibc define various macros to the same
values they would be defined to by the generic version of that header,
plus macros IEEE_DOUBLE_BIG_ENDIAN or IEEE_DOUBLE_MIXED_ENDIAN related
to the representation of double. The latter macros are in turn only
used in gmp-impl.h to define union ieee_double_extract, which is not
used in glibc. Thus all of these headers, except for the generic one
and those that define _LONG_LONG_LIMB for ILP32 configurations with
64-bit registers, are redundant, and this patch removes them.
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.
With mathinline removal there is no need to keep building and testing
inline math tests.
The gen-libm-tests.py support to generate ULP_I_* is removed and all
libm-test-ulps files are updated to longer have the
i{float,double,ldouble} entries. The support for no-test-inline is
also removed from both gen-auto-libm-tests and the
auto-libm-test-out-* were regenerated.
Checked on x86_64-linux-gnu and i686-linux-gnu.
After recent discussions:
- "[PATCH] s390: Remove backchain-based fallback from backtrace"
https://www.sourceware.org/ml/libc-alpha/2020-02/msg00287.html
- "Re: [PATCH 07/11] s390: Implement backtrace on top of <unwind-link.h>"
https://www.sourceware.org/ml/libc-alpha/2020-02/msg00637.html
We've checked and decided to remove the backchain:
We don't know of any environments without libgcc. Thus the backchain
unwinder is not used. If somebody builds with -mbackchain and without
fasynchronous-unwind-tables and has libgcc installed, then the
libgcc unwinder is called but not the backchain-based fallback.
This step allows to get rid of the s390x specific backtrace.c files at all.
Furthermore the now used debug/backtrace.c version has some more
advantages:
- Free all resources if necessary. (libc_freeres_fn)
- Remove NULL address above _start.
- Check whether we make any progress while getting addresses.
This supersedes the init_array sysdeps directory. It allows us to
check for ELF_INITFINI in both C and assembler code, and skip DT_INIT
and DT_FINI processing completely on newer architectures.
A new header file is needed because <dl-machine.h> is incompatible
with assembler code. <sysdep.h> is compatible with assembler code,
but it cannot be included in all assembler files because on some
architectures, it redefines register names, and some assembler files
conflict with that.
<elf-initfini.h> is replicated for legacy architectures which need
DT_INIT/DT_FINI support. New architectures follow the generic default
and disable it.
The comment "isn't" contained a non-ascii character which leads to
an error if compiled with -finput-charset=ascii:
error: failure to convert ascii to UTF-8
This is observable in GCC testsuite:
FAIL: 17_intro/headers/c++1998/charset.cc (test for excess errors)
FAIL: 17_intro/headers/c++2011/charset.cc (test for excess errors)
FAIL: 17_intro/headers/c++2014/charset.cc (test for excess errors)
FAIL: 17_intro/headers/c++2017/charset.cc (test for excess errors)
FAIL: 17_intro/headers/c++2020/charset.cc (test for excess errors)
Also rewrite the comment above.
Reported-by: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
This patch adds a new macro, libm_alias_finite, to define all _finite
symbol. It sets all _finite symbol as compat symbol based on its first
version (obtained from the definition at built generated first-versions.h).
The <fn>f128_finite symbols were introduced in GLIBC 2.26 and so need
special treatment in code that is shared between long double and float128.
It is done by adding a list, similar to internal symbol redifinition,
on sysdeps/ieee754/float128/float128_private.h.
Alpha also needs some tricky changes to ensure we still emit 2 compat
symbols for sqrt(f).
Passes buildmanyglibc.
Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This patch implements roundtoint and convertoint for s390
by using the load-fp-integer and convert-to-fixed instructions.
Both functions are using "round to nearest with ties away from zero"
rounding mode and do not raise inexact exceptions.
This patch updates the s390 specific functions fegetround,
fesetround, feholdexcept, fesetenv, feupdateenv, fegetexceptflag,
fetestexcept, fesetexceptflag, fetestexceptflag.
Now those functions are using the libc_fe* macros if possible.
Furthermore fegetexceptflag is now returning the exception from
dxc field shifted to the usual exception-flags.
Thus a special fetestexceptflag implementation is not needed anymore.
This patch provides the s390 specific implementation for
libc_feholdexcept, libc_fesetround, libc_feholdexcept_setround,
libc_fetestexcept, libc_fesetenv, libc_feupdateenv_test,
libc_feupdateenv, libc_feholdsetround_ctx, libc_feresetround_ctx,
libc_feholdsetround_noex_ctx and libc_feresetround_noex_ctx.
If compiled with z196 zarch support, the convert-to-fixed instruction
is used to implement llround, llroundf, llroundl.
Otherwise the common-code implementation is used.
If compiled with z196 zarch support, the convert-to-fixed instruction
is used to implement lround, lroundf, lroundl.
Otherwise the common-code implementation is used.
If compiled with z196 zarch support, the convert-to-fixed instruction
is used to implement llrint, llrintf, llrintl.
Otherwise the common-code implementation is used.
If compiled with z196 zarch support, the convert-to-fixed instruction
is used to implement lrint, lrintf, lrintl.
Otherwise the common-code implementation is used.
If compiled with z196 zarch support, the load-fp-integer instruction
is used to implement roundeven, roundevenf, roundevenl.
Otherwise the common-code implementation is used.
This patch is always using the corresponding GCC builtin for copysignf, copysign,
and is using the builtin for copysignl, copysignf128 if the USE_FUNCTION_BUILTIN
macros are defined to one in math-use-builtins.h.
Altough the long double version is enabled by default we still need
the macro and the alternative implementation as the _Float128 version
of the builtin is not available with all supported GCC versions.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This patch is using the corresponding GCC builtin for roundf, round,
roundl and roundf128 if the USE_FUNCTION_BUILTIN macros are defined to one
in math-use-builtins.h.
This is the case for s390 if build with at least --march=z196 --mzarch.
Otherwise the generic implementation is used. The code of the generic
implementation is not changed.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This patch is using the corresponding GCC builtin for truncf, trunc,
truncl and truncf128 if the USE_FUNCTION_BUILTIN macros are defined to one
in math-use-builtins.h.
This is the case for s390 if build with at least --march=z196 --mzarch.
Otherwise the generic implementation is used. The code of the generic
implementation is not changed.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This patch is using the corresponding GCC builtin for ceilf, ceil,
ceill and ceilf128 if the USE_FUNCTION_BUILTIN macros are defined to one
in math-use-builtins.h.
This is the case for s390 if build with at least --march=z196 --mzarch.
Otherwise the generic implementation is used. The code of the generic
implementation is not changed.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This patch is using the corresponding GCC builtin for floorf, floor,
floorl and floorf128 if the USE_FUNCTION_BUILTIN macros are defined to one
in math-use-builtins.h.
This is the case for s390 if build with at least --march=z196 --mzarch.
Otherwise the generic implementation is used. The code of the generic
implementation is not changed.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This patch is using the corresponding GCC builtin for rintf, rint,
rintl and rintf128 if the USE_FUNCTION_BUILTIN macros are defined to one
in math-use-builtins.h.
This is the case for s390 if build with at least --march=z196 --mzarch.
Otherwise the generic implementation is used. The code of the generic
implementation is not changed.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This patch is using the corresponding GCC builtin for nearbyintf, nearbyint,
nearbintl and nearbyintf128 if the USE_FUNCTION_BUILTIN macros are defined to one
in math-use-builtins.h.
This is the case for s390 if build with at least --march=z196 --mzarch.
Otherwise the generic implementation is used. The code of the generic
implementation is not changed.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
If the specified needle crosses a page-boundary, the s390-z15 ifunc variant of
strstr truncates the needle which results in invalid results.
This is fixed by loading the needle beyond the page boundary to v18 instead of v16.
The bug is sometimes observable in test-strstr.c in check1 and check2 as the
haystack and needle is stored on stack. Thus the needle can be on a page boundary.
check2 is now extended to test haystack / needles located on stack, at end of page
and on two pages.
This bug was introduced with commit 6f47401bd5
("S390: Add arch13 strstr ifunc variant.") and is already released in glibc 2.30.
This patch adds a default pthreadtypes-arch.h, the idea is to simpify
new ports inclusion and an override is required only if the architecture
adds some arch-specific extensions or requirement.
The default values on the new generic header are based on current
architecture define value and they are not optimal compared to current
code requirements as below.
- On 64 bits __SIZEOF_PTHREAD_BARRIER_T is defined as 32 while is
sizeof (struct pthread_barrier) is 20 bytes.
- On 32 bits __SIZEOF_PTHREAD_ATTR_T is defined as 36 while
sizeof (struct pthread_attr) is 32.
The default values are not changed so the generic header could be
used by some architectures.
Checked with a build on affected abis.
Change-Id: Ie0cd586258a2650f715c1af0c9fe4e7063b0409a
This patch adds a new generic __pthread_rwlock_arch_t definition meant
to be used by new ports. Its layout mimics the current usage on some
64 bits ports and it allows some ports to use the generic definition.
The arch __pthread_rwlock_arch_t definition is moved from
pthreadtypes-arch.h to another arch-specific header (struct_rwlock.h).
Also the static intialization macro for pthread_rwlock_t is set to use
an arch defined on (__PTHREAD_RWLOCK_INITIALIZER) which simplifies its
implementation.
The default pthread_rwlock_t layout differs from current ports with:
1. Internal layout is the same for 32 bits and 64 bits.
2. Internal flag is an unsigned short so it should not required
additional padding to align for word boundary (if it is the case
for the ABI).
Checked with a build on affected abis.
Change-Id: I776a6a986c23199929d28a3dcd30272db21cd1d0
The current way of defining the common mutex definition for POSIX and
C11 on pthreadtypes-arch.h (added by commit 06be6368da) is
not really the best options for newer ports. It requires define some
misleading flags that should be always defined as 0
(__PTHREAD_COMPAT_PADDING_MID and __PTHREAD_COMPAT_PADDING_END), it
exposes options used solely for linuxthreads compat mode
(__PTHREAD_MUTEX_USE_UNION and __PTHREAD_MUTEX_NUSERS_AFTER_KIND), and
requires newer ports to explicit define them (adding more boilerplate
code).
This patch adds a new default __pthread_mutex_s definition meant to
be used by newer ports. Its layout mimics the current usage on both
32 and 64 bits ports and it allows most ports to use the generic
definition. Only ports that use some arch-specific definition (such
as hardware lock-elision or linuxthreads compat) requires specific
headers.
For 32 bit, the generic definitions mimic the other 32-bit ports
of using an union to define the fields uses on adaptive and robust
mutexes (thus not allowing both usage at same time) and by using a
single linked-list for robust mutexes. Both decisions seemed to
follow what recent ports have done and make the resulting
pthread_mutex_t/mtx_t object smaller.
Also the static intialization macro for pthread_mutex_t is set to use
a macro __PTHREAD_MUTEX_INITIALIZER where the architecture can redefine
in its struct_mutex.h if it requires additional fields to be
initialized.
Checked with a build on affected abis.
Change-Id: I30a22c3e3497805fd6e52994c5925897cffcfe13
The new rwlock implementation added by cc25c8b4c1 (2.25) removed
support for lock-elision. This patch removes remaining the
arch-specific unused definitions.
Checked with a build against all affected ABIs.
Change-Id: I5dec8af50e3cd56d7351c52ceff4aa3771b53cd6
This patch new build tests to check for internal fields offsets for
internal pthread_rwlock_t definition. Althoug the '__data.__flags'
field layout should be preserved due static initializators, the patch
also adds tests for the futexes that may be used in a shared memory
(although using different libc version in such scenario is not really
supported).
Checked with a build against all affected ABIs.
Change-Id: Iccc103d557de13d17e4a3f59a0cad2f4a640c148
The offsets of pthread_mutex_t __data.__nusers, __data.__spins,
__data.elision, __data.list are not required to be constant over
the releases. Only the __data.__kind is used for static
initializers.
This patch also adds an additional size check for __data.__kind.
Checked with a build against affected ABIs.
Change-Id: I7a4e48cc91b4c4ada57e9a5d1b151fb702bfaa9f
The s390 gcc bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77918
"S390: Floating point comparisons don't raise invalid for unordered operands."
is fixed with gcc 10. Thus we conditionally set FIX_COMPARE_INVALID
to 0 or 1.
With only two exceptions (sys/types.h and sys/param.h, both of which
historically might have defined BYTE_ORDER) the public headers that
include <endian.h> only want to be able to test __BYTE_ORDER against
__*_ENDIAN.
This patch creates a new bits/endian.h that can be included by any
header that wants to be able to test __BYTE_ORDER and/or
__FLOAT_WORD_ORDER against the __*_ENDIAN constants, or needs
__LONG_LONG_PAIR. It only defines macros in the implementation
namespace.
The existing bits/endian.h (which could not be included independently
of endian.h, and only defines __BYTE_ORDER and maybe __FLOAT_WORD_ORDER)
is renamed to bits/endianness.h. I also took the opportunity to
canonicalize the form of this header, which we are stuck with having
one copy of per architecture. Since they are so short, this means git
doesn’t understand that they were renamed from existing headers, sigh.
endian.h itself is a nonstandard header and its only remaining use
from a standard header is guarded by __USE_MISC, so I dropped the
__USE_MISC conditionals from around all of the public-namespace things
it defines. (This means, an application that requests strict library
conformance but includes endian.h will still see the definition of
BYTE_ORDER.)
A few changes to specific bits/endian(ness).h variants deserve
mention:
- sysdeps/unix/sysv/linux/ia64/bits/endian.h is moved to
sysdeps/ia64/bits/endianness.h. If I remember correctly, ia64 did
have selectable endianness, but we have assembly code in
sysdeps/ia64 that assumes it’s little-endian, so there is no reason
to treat the ia64 endianness.h as linux-specific.
- The C-SKY port does not fully support big-endian mode, the compile
will error out if __CSKYBE__ is defined.
- The PowerPC port had extra logic in its bits/endian.h to detect a
broken compiler, which strikes me as unnecessary, so I removed it.
- The only files that defined __FLOAT_WORD_ORDER always defined it to
the same value as __BYTE_ORDER, so I removed those definitions.
The SH bits/endian(ness).h had comments inconsistent with the
actual setting of __FLOAT_WORD_ORDER, which I also removed.
- I *removed* copyright boilerplate from the few bits/endian(ness).h
headers that had it; these files record a single fact in a fashion
dictated by an external spec, so I do not think they are copyrightable.
As long as I was changing every copy of ieee754.h in the tree, I
noticed that only the MIPS variant includes float.h, because it uses
LDBL_MANT_DIG to decide among three different versions of
ieee854_long_double. This patch makes it not include float.h when
GCC’s intrinsic __LDBL_MANT_DIG__ is available.
* string/endian.h: Unconditionally define LITTLE_ENDIAN,
BIG_ENDIAN, PDP_ENDIAN, and BYTE_ORDER. Condition byteswapping
macros only on !__ASSEMBLER__. Move the definitions of
__BIG_ENDIAN, __LITTLE_ENDIAN, __PDP_ENDIAN, __FLOAT_WORD_ORDER,
and __LONG_LONG_PAIR to...
* string/bits/endian.h: ...this new file, which includes
the renamed header bits/endianness.h for the definition of
__BYTE_ORDER and possibly __FLOAT_WORD_ORDER.
* string/Makefile: Install bits/endianness.h.
* include/bits/endian.h: New wrapper.
* bits/endian.h: Rename to bits/endianness.h.
Add multiple-include guard. Rewrite the comment explaining what
the machine-specific variants of this file should do.
* sysdeps/unix/sysv/linux/ia64/bits/endian.h:
Move to sysdeps/ia64.
* sysdeps/aarch64/bits/endian.h
* sysdeps/alpha/bits/endian.h
* sysdeps/arm/bits/endian.h
* sysdeps/csky/bits/endian.h
* sysdeps/hppa/bits/endian.h
* sysdeps/ia64/bits/endian.h
* sysdeps/m68k/bits/endian.h
* sysdeps/microblaze/bits/endian.h
* sysdeps/mips/bits/endian.h
* sysdeps/nios2/bits/endian.h
* sysdeps/powerpc/bits/endian.h
* sysdeps/riscv/bits/endian.h
* sysdeps/s390/bits/endian.h
* sysdeps/sh/bits/endian.h
* sysdeps/sparc/bits/endian.h
* sysdeps/x86/bits/endian.h:
Rename to endianness.h; canonicalize form of file; remove
redundant definitions of __FLOAT_WORD_ORDER.
* sysdeps/powerpc/bits/endianness.h: Remove logic to check for
broken compilers.
* ctype/ctype.h
* sysdeps/aarch64/nptl/bits/pthreadtypes-arch.h
* sysdeps/arm/nptl/bits/pthreadtypes-arch.h
* sysdeps/csky/nptl/bits/pthreadtypes-arch.h
* sysdeps/ia64/ieee754.h
* sysdeps/ieee754/ieee754.h
* sysdeps/ieee754/ldbl-128/ieee754.h
* sysdeps/ieee754/ldbl-128ibm/ieee754.h
* sysdeps/m68k/nptl/bits/pthreadtypes-arch.h
* sysdeps/microblaze/nptl/bits/pthreadtypes-arch.h
* sysdeps/mips/ieee754/ieee754.h
* sysdeps/mips/nptl/bits/pthreadtypes-arch.h
* sysdeps/nios2/nptl/bits/pthreadtypes-arch.h
* sysdeps/nptl/pthread.h
* sysdeps/riscv/nptl/bits/pthreadtypes-arch.h
* sysdeps/sh/nptl/bits/pthreadtypes-arch.h
* sysdeps/sparc/sparc32/ieee754.h
* sysdeps/unix/sysv/linux/generic/bits/stat.h
* sysdeps/unix/sysv/linux/generic/bits/statfs.h
* sysdeps/unix/sysv/linux/sys/acct.h
* wctype/bits/wctype-wchar.h:
Include bits/endian.h, not endian.h.
* sysdeps/unix/sysv/linux/hppa/pthread.h: Don’t include endian.h.
* sysdeps/mips/ieee754/ieee754.h: Use __LDBL_MANT_DIG__
in ifdefs, instead of LDBL_MANT_DIG. Only include float.h
when __LDBL_MANT_DIG__ is not predefined, in which case
define __LDBL_MANT_DIG__ to equal LDBL_MANT_DIG.
Use macro _HP_TIMING_S390_H instead of _HP_TIMING_H
in s390 specific hp-timing.h
ChangeLog:
* sysdeps/s390/hp-timing.h (_HP_TIMING_H): Undefine.
(_HP_TIMING_S390_H): Define.
This patch adds support for HP_TIMING_NOW if we build at least
with -march=z10 -mzarch. Otherwise we are still using the
generic hp-timing.h.
ChangeLog:
* sysdeps/s390/hp-timing.h: New file.
This patch introduces the new arch13 ifunc variant for memmem.
For needles longer than 9 bytes it is relying on the common-code
implementation. For shorter needles it is using the new vstrs instruction
which is able to search a substring within a vector register.
ChangeLog:
* sysdeps/s390/Makefile (sysdep_routines): Add memmem-arch13.
* sysdeps/s390/ifunc-memmem.h (HAVE_MEMMEM_ARCH13, MEMMEM_ARCH13,
MEMMEM_Z13_ONLY_USED_AS_FALLBACK, HAVE_MEMMEM_IFUNC_AND_ARCH13_SUPPORT):
New defines.
* sysdeps/s390/memmem-arch13.S: New file.
* sysdeps/s390/memmem-vx.c: Omit GI symbol for z13 memmem ifunc variant
if it is only used as fallback.
* sysdeps/s390/memmem.c (memmem): Add arch13 variant in ifunc selector.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add ifunc variant for arch13 memmem.
This patch introduces the new arch13 ifunc variant for strstr.
For needles longer than 9 charachters it is relying on the common-code
implementation. For shorter needles it is using the new vstrs instruction
which is able to search a substring within a vector register.
ChangeLog:
* sysdeps/s390/Makefile (sysdep_routines): Add strstr-arch13.
* sysdeps/s390/ifunc-strstr.h (HAVE_STRSTR_ARCH13, STRSTR_ARCH13,
STRSTR_Z13_ONLY_USED_AS_FALLBACK, HAVE_STRSTR_IFUNC_AND_ARCH13_SUPPORT):
New defines.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add ifunc variant for arch13 strstr.
* sysdeps/s390/strstr-arch13.S: New file.
* sysdeps/s390/strstr-vx.c: Omit GI symbol for z13 strstr ifunc variant
if it is only used as fallback.
* sysdeps/s390/strstr.c (strstr): Add arch13 variant in ifunc selector.
This patch introduces the new arch13 ifunc variant for memmove.
For the forward or non-overlapping case it is just using memcpy.
For the backward case it relies on the new instruction mvcrl.
The instruction copies up to 256 bytes at once.
In case of an overlap, it copies the bytes like copying them
one by one starting from right to left.
ChangeLog:
* sysdeps/s390/ifunc-memcpy.h (HAVE_MEMMOVE_ARCH13, MEMMOVE_ARCH13
HAVE_MEMMOVE_IFUNC_AND_ARCH13_SUPPORT): New defines.
* sysdeps/s390/memcpy-z900.S: Add arch13 memmove implementation.
* sysdeps/s390/memmove.c (memmove): Add arch13 variant in
ifunc selector.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add ifunc variant for arch13 memmove.
* sysdeps/s390/multiarch/ifunc-resolve.h (S390_STFLE_BITS_ARCH13_MIE3,
S390_IS_ARCH13_MIE3): New defines.
Add two configure checks which detect if arch13 is supported
by the assembler at all - by explicitely setting the machine -
and if it is supported with default settings.
ChangeLog:
* config.h.in (HAVE_S390_MIN_ARCH13_ZARCH_ASM_SUPPORT,
HAVE_S390_ARCH13_ASM_SUPPORT): New undefine.
* sysdeps/s390/configure.ac: Add checks for arch13 support.
* sysdeps/s390/configure: Regenerated.
This patch adds vx and vxe as important hwcaps
which allows one to provide shared libraries
tuned for platforms with non-vx/-vxe, vx or vxe.
ChangeLog:
* sysdeps/s390/dl-procinfo.h (HWCAP_IMPORTANT):
Add HWCAP_S390_VX and HWCAP_S390_VXE.
The stub implementations are turned into compat symbols.
Linux actually has two reserved system call numbers (for getpmsg
and putpmsg), but these system calls have never been implemented,
and there are no plans to implement them, so this patch replaces
the wrappers with the generic stubs.
According to <https://bugzilla.redhat.com/show_bug.cgi?id=436349>,
the presence of the XSI STREAMS declarations is a minor portability
hazard because they are not actually implemented.
This commit does not change the TIRPC support code in
sunrpc/rpc_svcout.c. It uses additional XTI functionality and
therefore never worked with glibc.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Set the default function alignment to 16 bytes in order to
get rid of some unwanted performance effects.
Please see also GCC commit "S/390: Set default function
alignment to 16." (Subversion revision 262817)
ChangeLog:
* sysdeps/s390/s390-64/sysdep.h(ENTRY): Use alignment of 16byte.
* sysdeps/s390/s390-32/sysdep.h: Likewise.
The recent commit 81a1443941
has introduced __wcscpy, __GI___wcscpy and the weak alias wcscpy.
This patch also introduces those symbols if glibc is build
with CFLAGS="-march=z13" where the ifunc is omitted.
ChangeLog:
* sysdeps/s390/wcscpy-vx.S: Add strong aliases to
__wcscpy, __GI___wcscpy and weak alias to wcscpy.
This patch rewrites wcscat using wcslen and wcscpy. This is similar to
the optimization done on strcat by 6e46de42fe.
The strcpy changes are mainly to add the internal alias to avoid PLT
calls.
Checked on x86_64-linux-gnu and a build against the affected
architectures.
* include/wchar.h (__wcscpy): New prototype.
* sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c
(__wcscpy): Route internal symbol to generic implementation.
* sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c (wcscpy):
Add internal __wcscpy alias.
* sysdeps/powerpc/powerpc64/multiarch/wcscpy.c (wcscpy): Likewise.
* sysdeps/s390/wcscpy.c (wcscpy): Likewise.
* sysdeps/x86_64/multiarch/wcscpy.c (wcscpy): Likewise.
* wcsmbs/wcscpy.c (wcscpy): Add
* sysdeps/x86_64/multiarch/wcscpy-c.c (WCSCPY): Adjust macro to
use generic implementation.
* wcsmbs/wcscat.c (wcscat): Rewrite using wcslen and wcscpy.
This patch fixes -Wimplicit-fallthrough warnings in system-specific
code that show up building glibc with -Wextra, by adding fall-through
comments, or moving existing such comments to the place required for
them to work (immediately before the case label being fallen through).
Tested with build-many-glibcs.py.
* sysdeps/i386/dl-machine.h (elf_machine_rela): Add fall-through
comments.
* sysdeps/m68k/m680x0/fpu/s_cexp_template.c (s(__cexp)): Likewise.
* sysdeps/m68k/memcopy.h (WORD_COPY_FWD): Likewise.
(WORD_COPY_BWD): Likewise.
* sysdeps/mach/hurd/ioctl.c (__ioctl): Likewise.
* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela):
Likewise.
* sysdeps/s390/iso-8859-1_cp037_z900.c (TR_LOOP): Likewise.
* sysdeps/mips/dl-machine.h (elf_machine_reloc): Move fall-through
comment.
* sysdeps/mips/dl-trampoline.c (__dl_runtime_resolve): Likewise.
The recent commit 65f7767a91
has introduced __wmemcmp and the weak alias wmemcmp.
This patch also introduces those symbols if glibc is build
with CFLAGS="-march=z13" where the ifunc is omitted.
ChangeLog:
* sysdeps/s390/wmemcmp-vx.S: Add strong alias to
__wmemcmp and weak alias to wmemcmp.
This fixes the same bug in fnmatch that was fixed by commit 7e2f0d2d77 for
regexp matching. As a side effect it also removes the use of an unbound
VLA.
The ifunc macros s390_vx_libc* are no longer used and
can be removed as all users are now relying on
s390_libc_ifunc_expr.
The same applies to s390_libc_ifunc. The macro
s390_libc_ifunc_init is now renamed to
s390_libc_ifunc_expr_stfle_init and the users are
adjusted accordingly.
ChangeLog:
* sysdeps/s390/multiarch/ifunc-resolve.h
(s390_vx_libc_ifunc, s390_vx_libc_ifunc_redirected,
s390_vx_libc_ifunc2, s390_vx_libc_ifunc_init,
s390_vx_libc_ifunc2_redirected, s390_libc_ifunc):
Delete macro definition.
(s390_libc_ifunc_init): Rename to
s390_libc_ifunc_expr_stfle_init.
* sysdeps/s390/bzero: Use
s390_libc_ifunc_expr_stfle_init instead of
s390_libc_ifunc_init.
* sysdeps/s390/memcmp.c: Likewise.
* sysdeps/s390/memcpy.c: Likewise.
* sysdeps/s390/mempcpy.c: Likewise.
* sysdeps/s390/memset.c: Likewise.
The ifunc handling for various __gconv_transform_* functions
which are using IFUNC on s390x are adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Instead those functions are just an alias to the vector variants.
Furthermore the ifunc-macro s390_libc_ifunc_expr is now used instead of
s390_vx_libc_ifunc.
ChangeLog:
* sysdeps/s390/multiarch/gconv_simple.c (ICONV_VX_IFUNC):
Define macro dependent on HAVE_S390_MIN_Z13_ZARCH_ASM_SUPPORT.
The ifunc handling for wmemcmp is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wmemcmp variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wmemcmp variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wmemcmp.
* sysdeps/s390/multiarch/wmemcmp-c.c: Move to ...
* sysdeps/s390/wmemcmp-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wmemcmp-vx.S: Move to ...
* sysdeps/s390/wmemcmp-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wmemcmp.c: Move to ...
* sysdeps/s390/wmemcmp.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wmemcmp.h: New file.
The ifunc handling for wmemset is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
Glibc internal calls will use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wmemset variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wmemset variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wmemset.
* sysdeps/s390/multiarch/wmemset-c.c: Move to ...
* sysdeps/s390/wmemset-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wmemset-vx.S: Move to ...
* sysdeps/s390/wmemset-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wmemset.c: Move to ...
* sysdeps/s390/wmemset.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wmemset.h: New file.
The ifunc handling for wmemchr is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
Glibc internal calls will use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wmemchr variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wmemchr variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wmemchr.
* sysdeps/s390/multiarch/wmemchr-c.c: Move to ...
* sysdeps/s390/wmemchr-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wmemchr-vx.S: Move to ...
* sysdeps/s390/wmemchr-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wmemchr.c: Move to ...
* sysdeps/s390/wmemchr.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wmemchr.h: New file.
The ifunc handling for wcscspn is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcscspn variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcscspn variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcscspn.
* sysdeps/s390/multiarch/wcscspn-c.c: Move to ...
* sysdeps/s390/wcscspn-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcscspn-vx.S: Move to ...
* sysdeps/s390/wcscspn-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcscspn.c: Move to ...
* sysdeps/s390/wcscspn.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcscspn.h: New file.
The ifunc handling for wcspbrk is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
Glibc internal calls will use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcspbrk variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcspbrk variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcspbrk.
* sysdeps/s390/multiarch/wcspbrk-c.c: Move to ...
* sysdeps/s390/wcspbrk-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcspbrk-vx.S: Move to ...
* sysdeps/s390/wcspbrk-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcspbrk.c: Move to ...
* sysdeps/s390/wcspbrk.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcspbrk.h: New file.
The ifunc handling for wcsspn is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
Glibc internal calls will use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcsspn variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcsspn variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcsspn.
* sysdeps/s390/multiarch/wcsspn-c.c: Move to ...
* sysdeps/s390/wcsspn-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsspn-vx.S: Move to ...
* sysdeps/s390/wcsspn-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsspn.c: Move to ...
* sysdeps/s390/wcsspn.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcsspn.h: New file.
The ifunc handling for wcsrchr is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcsrchr variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcsrchr variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcsrchr.
* sysdeps/s390/multiarch/wcsrchr-c.c: Move to ...
* sysdeps/s390/wcsrchr-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsrchr-vx.S: Move to ...
* sysdeps/s390/wcsrchr-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsrchr.c: Move to ...
* sysdeps/s390/wcsrchr.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcsrchr.h: New file.
The ifunc handling for wcschrnul is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcschrnul variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcschrnul variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcschrnul.
* sysdeps/s390/multiarch/wcschrnul-c.c: Move to ...
* sysdeps/s390/wcschrnul-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcschrnul-vx.S: Move to ...
* sysdeps/s390/wcschrnul-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcschrnul.c: Move to ...
* sysdeps/s390/wcschrnul.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcschrnul.h: New file.
The ifunc handling for wcschr is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
Glibc internal calls will use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcschr variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcschr variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcschr.
* sysdeps/s390/multiarch/wcschr-c.c: Move to ...
* sysdeps/s390/wcschr-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcschr-vx.S: Move to ...
* sysdeps/s390/wcschr-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcschr.c: Move to ...
* sysdeps/s390/wcschr.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcschr.h: New file.
The ifunc handling for wcsncmp is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcsncmp variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcsncmp variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcsncmp.
* sysdeps/s390/multiarch/wcsncmp-c.c: Move to ...
* sysdeps/s390/wcsncmp-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsncmp-vx.S: Move to ...
* sysdeps/s390/wcsncmp-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsncmp.c: Move to ...
* sysdeps/s390/wcsncmp.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcsncmp.h: New file.
The ifunc handling for wcscmp is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
Glibc internal calls will then also use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcscmp variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcscmp variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcscmp.
* sysdeps/s390/multiarch/wcscmp-c.c: Move to ...
* sysdeps/s390/wcscmp-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcscmp-vx.S: Move to ...
* sysdeps/s390/wcscmp-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcscmp.c: Move to ...
* sysdeps/s390/wcscmp.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcscmp.h: New file.
The ifunc handling for wcsncat is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcsncat variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcsncat variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcsncat.
* sysdeps/s390/multiarch/wcsncat-c.c: Move to ...
* sysdeps/s390/wcsncat-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsncat-vx.S: Move to ...
* sysdeps/s390/wcsncat-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsncat.c: Move to ...
* sysdeps/s390/wcsncat.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcsncat.h: New file.
The ifunc handling for wcscat is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcscat variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcscat variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcscat.
* sysdeps/s390/multiarch/wcscat-c.c: Move to ...
* sysdeps/s390/wcscat-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcscat-vx.S: Move to ...
* sysdeps/s390/wcscat-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcscat.c: Move to ...
* sysdeps/s390/wcscat.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcscat.h: New file.
The ifunc handling for wcpncpy is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcpncpy variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcpncpy variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcpncpy.
* sysdeps/s390/multiarch/wcpncpy-c.c: Move to ...
* sysdeps/s390/wcpncpy-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcpncpy-vx.S: Move to ...
* sysdeps/s390/wcpncpy-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcpncpy.c: Move to ...
* sysdeps/s390/wcpncpy.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcpncpy.h: New file.
The ifunc handling for wcsncpy is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcsncpy variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcsncpy variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcsncpy.
* sysdeps/s390/multiarch/wcsncpy-c.c: Move to ...
* sysdeps/s390/wcsncpy-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsncpy-vx.S: Move to ...
* sysdeps/s390/wcsncpy-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsncpy.c: Move to ...
* sysdeps/s390/wcsncpy.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcsncpy.h: New file.
The ifunc handling for wcpcpy is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcpcpy variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcpcpy variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcpcpy.
* sysdeps/s390/multiarch/wcpcpy-c.c: Move to ...
* sysdeps/s390/wcpcpy-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcpcpy-vx.S: Move to ...
* sysdeps/s390/wcpcpy-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcpcpy.c: Move to ...
* sysdeps/s390/wcpcpy.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcpcpy.h: New file.
The ifunc handling for wcscpy is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcscpy variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcscpy variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcscpy.
* sysdeps/s390/multiarch/wcscpy-c.c: Move to ...
* sysdeps/s390/wcscpy-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcscpy-vx.S: Move to ...
* sysdeps/s390/wcscpy-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcscpy.c: Move to ...
* sysdeps/s390/wcscpy.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcscpy.h: New file.
The ifunc handling for wcsnlen is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
Glibc internal calls will use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcsnlen variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcsnlen variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcsnlen.
* sysdeps/s390/multiarch/wcsnlen-c.c: Move to ...
* sysdeps/s390/wcsnlen-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsnlen-vx.S: Move to ...
* sysdeps/s390/wcsnlen-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcsnlen.c: Move to ...
* sysdeps/s390/wcsnlen.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcsnlen.h: New file.
The ifunc handling for wcslen is adjusted in order to omit ifunc
if the minimum architecture level already supports newer CPUs by default.
Unfortunately the c ifunc variant can't be omitted at all as it is used
by the z13 ifunc variant as fallback if the pointers are not 4-byte aligned.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove wcslen variants.
* sysdeps/s390/Makefile (sysdep_routines): Add wcslen variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for wcslen.
* sysdeps/s390/multiarch/wcslen-c.c: Move to ...
* sysdeps/s390/wcslen-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcslen-vx.S: Move to ...
* sysdeps/s390/wcslen-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/wcslen.c: Move to ...
* sysdeps/s390/wcslen.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-wcslen.h: New file.
The ifunc handling for memrchr is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove memrchr variants.
* sysdeps/s390/Makefile (sysdep_routines): Add memrchr variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for memrchr.
* sysdeps/s390/multiarch/memrchr-c.c: Move to ...
* sysdeps/s390/memrchr-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/memrchr-vx.S: Move to ...
* sysdeps/s390/memrchr-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/memrchr.c: Move to ...
* sysdeps/s390/memrchr.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-memrchr.h: New file.
The ifunc handling for memccpy is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove memccpy variants.
* sysdeps/s390/Makefile (sysdep_routines): Add memccpy variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for memccpy.
* sysdeps/s390/multiarch/memccpy-c.c: Move to ...
* sysdeps/s390/memccpy-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/memccpy-vx.S: Move to ...
* sysdeps/s390/memccpy-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/memccpy.c: Move to ...
* sysdeps/s390/memccpy.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-memccpy.h: New file.
The ifunc handling for rawmemchr is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
Glibc internal calls will then also use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove rawmemchr variants.
* sysdeps/s390/Makefile (sysdep_routines): Add rawmemchr variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for rawmemchr.
* sysdeps/s390/multiarch/rawmemchr-c.c: Move to ...
* sysdeps/s390/rawmemchr-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/rawmemchr-vx.S: Move to ...
* sysdeps/s390/rawmemchr-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/rawmemchr.c: Move to ...
* sysdeps/s390/rawmemchr.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-rawmemchr.h: New file.
The ifunc handling for memchr is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
Glibc internal calls will then also use the "newer" ifunc variant.
Note: The fallback s390-32/s390-64 ifunc variants with srst instruction
are now moved to the unified memchr-z900.S file which can be used for
31/64bit. The s390-32/s390-64 files multiarch/memchr.c and memchr.S
are deleted.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove memchr variants.
* sysdeps/s390/Makefile (sysdep_routines): Add memchr variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for memchr.
* sysdeps/s390/multiarch/memchr-vx.S: Move to ...
* sysdeps/s390/memchr-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/memchr.c: Move to ...
* sysdeps/s390/memchr.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-memchr.h: New file.
* sysdeps/s390/s390-64/memchr.S: Move to ...
* sysdeps/s390/memchr-z900.S: ... here and adjust to be usable
for 31/64bit and ifunc handling.
* sysdeps/s390/s390-32/multiarch/memchr.c: Delete file.
* sysdeps/s390/s390-64/multiarch/memchr.c: Likewise.
* sysdeps/s390/s390-32/memchr.S: Likewise.
The ifunc handling for strcspn is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
Glibc internal calls will then also use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove strcspn variants.
* sysdeps/s390/Makefile (sysdep_routines): Add strcspn variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for strcspn.
* sysdeps/s390/multiarch/strcspn-c.c: Move to ...
* sysdeps/s390/strcspn-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strcspn-vx.S: Move to ...
* sysdeps/s390/strcspn-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strcspn.c: Move to ...
* sysdeps/s390/strcspn.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-strcspn.h: New file.
The ifunc handling for strpbrk is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
Glibc internal calls will then also use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove strpbrk variants.
* sysdeps/s390/Makefile (sysdep_routines): Add strpbrk variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for strpbrk.
* sysdeps/s390/multiarch/strpbrk-c.c: Move to ...
* sysdeps/s390/strpbrk-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strpbrk-vx.S: Move to ...
* sysdeps/s390/strpbrk-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strpbrk.c: Move to ...
* sysdeps/s390/strpbrk.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-strpbrk.h: New file.
The ifunc handling for strspn is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
Glibc internal calls will then also use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove strspn variants.
* sysdeps/s390/Makefile (sysdep_routines): Add strspn variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for strspn.
* sysdeps/s390/multiarch/strspn-c.c: Move to ...
* sysdeps/s390/strspn-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strspn-vx.S: Move to ...
* sysdeps/s390/strspn-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strspn.c: Move to ...
* sysdeps/s390/strspn.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-strspn.h: New file.
The ifunc handling for strrchr is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
Glibc internal calls will then also use the "newer" ifunc variant.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove strrchr variants.
* sysdeps/s390/Makefile (sysdep_routines): Add strrchr variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for strrchr.
* sysdeps/s390/multiarch/strrchr-c.c: Move to ...
* sysdeps/s390/strrchr-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strrchr-vx.S: Move to ...
* sysdeps/s390/strrchr-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strrchr.c: Move to ...
* sysdeps/s390/strrchr.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-strrchr.h: New file.
The ifunc handling for strchrnul is adjusted in order to omit ifunc
variants if those will never be used as the minimum architecture level
already supports newer CPUs by default.
ChangeLog:
* sysdeps/s390/multiarch/Makefile
(sysdep_routines): Remove strchrnul variants.
* sysdeps/s390/Makefile (sysdep_routines): Add strchrnul variants.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Refactor ifunc handling for strchrnul.
* sysdeps/s390/multiarch/strchrnul-c.c: Move to ...
* sysdeps/s390/strchrnul-c.c: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strchrnul-vx.S: Move to ...
* sysdeps/s390/strchrnul-vx.S: ... here and adjust ifunc handling.
* sysdeps/s390/multiarch/strchrnul.c: Move to ...
* sysdeps/s390/strchrnul.c: ... here and adjust ifunc handling.
* sysdeps/s390/ifunc-strchrnul.h: New file.
