The m68k bits/fenv.h is in sysdeps/m68k/fpu/, meaning that no-FPU
ColdFire instead gets the generic (top-level) bits/fenv.h.
That top-level bits/fenv.h defines no rounding mode constants. That
no longer works for building glibc tests: some tests fail to build (at
least with warnings) if no rounding mode macros are defined, so at
least FE_TONEAREST must be defined in all cases (as various
architectures without rounding mode support indeed do), while
__FE_UNDEFINED must be defined in the case where not all the standard
rounding modes are supported.
On general principles of supporting multilib toolchains with a single
set of headers shared between multilibs for a given architecture, it's
also desirable for the same bits/fenv.h header to work for both FPU
and no-FPU configurations. Thus, this patch moves the m68k
bits/fenv.h to sysdeps/m68k/bits/fenv.h, and inserts appropriate
conditionals to handle the no-FPU case. All the exception macros, and
FE_NOMASK_ENV, are disabled in the no-FPU case; FE_ALL_EXCEPT is
defined to 0 in that case. All rounding modes except FE_TONEAREST are
disabled in that case, and __FE_UNDEFINED is defined accordingly. To
avoid an unnecessary ABI change, fenv_t is defined in the no-FPU case
to match the definition it would have got from the generic
bits/fenv.h.
This suffices to get a clean glibc and testsuite build for this
configuration with build-many-glibcs.py (and keeps a clean build for
the other m68k configurations); it has not been otherwise tested.
* sysdeps/m68k/fpu/bits/fenv.h: Move to ....
* sysdeps/m68k/bits/fenv.h: ... here.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_INEXACT): Do
not define.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_DIVBYZERO):
Likewise.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_UNDERFLOW):
Likewise.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_OVERFLOW):
Likewise.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_INVALID):
Likewise.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_ALL_EXCEPT):
Define to 0.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__]
(__FE_UNDEFINED): New enum constant.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_TOWARDZERO):
Do not define.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_DOWNWARD):
Likewise.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_UPWARD):
Likewise.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (fenv_t): Define
to match generic bits/fenv.h.
[!__HAVE_68881__ && !__HAVE_FPU__ && !__mcffpu__] (FE_NOMASK_ENV):
Do not define.
As reported in bug 21314, building log1p and log1pf fails with -Os
because of a spurious -Wmaybe-uninitialized warning (reported there
for GCC 5 for MIPS, I see it also with GCC 7 for x86_64). This patch,
based on the patches in the bug, fixes this using the DIAG_* macros.
Tested for x86_64 with -Os that this eliminates those warnings and so
allows the build to progress further.
2018-02-01 Carlos O'Donell <carlos@redhat.com>
Ramin Seyed-Moussavi <lordrasmus@gmail.com>
Joseph Myers <joseph@codesourcery.com>
[BZ #21314]
* sysdeps/ieee754/dbl-64/s_log1p.c: Include <libc-diag.h>.
(__log1p): Disable -Wmaybe-uninitialized for -Os around
computation using c.
* sysdeps/ieee754/flt-32/s_log1pf.c: Include <libc-diag.h>.
(__log1pf): Disable -Wmaybe-uninitialized for -Os around
computation using c.
We don't have support for hp timing for now, even the i686 variant, which needs
to know the CPU speed.
Copied from sysdeps/generic/hp-timing.h
* sysdeps/mach/hurd/hp-timing.h: New file.
* hurd/Versions: Fix version when _hurd_exec_paths was added.
* mach/Versions: Fix version when __mach_host_self_ was added.
* sysdeps/mach/hurd/i386/ld.abilist: New file.
* sysdeps/mach/hurd/i386/libBrokenLocale.abilist: New file.
* sysdeps/mach/hurd/i386/libanl.abilist: New file.
* sysdeps/mach/hurd/i386/libc.abilist: New file.
* sysdeps/mach/hurd/i386/libcrypt.abilist: New file.
* sysdeps/mach/hurd/i386/libdl.abilist: New file.
* sysdeps/mach/hurd/i386/libm.abilist: New file.
* sysdeps/mach/hurd/i386/libnsl.abilist: New file.
* sysdeps/mach/hurd/i386/libresolv.abilist: New file.
* sysdeps/mach/hurd/i386/librt.abilist: New file.
* sysdeps/mach/hurd/i386/libutil.abilist: New file.
This contains a definition of __IPC_64 that matches the RISC-V Linux
ABI.
2018-01-29 Darius Rad <darius@bluespec.com>
* sysdeps/unix/sysv/linux/riscv/ipc_priv.h: New file.
This patch lays out the top-level orginazition of the RISC-V port. It
contains all the Implies files as well as various other fragments of
build infastructure for the RISC-V port. This contains the only change
to a shared file: config.h.in.
RISC-V is a family of base ISAs with optional extensions. The base ISAs
are RV32I and RV64I, which are 32-bit and 64-bit integer-only ISAs, but
this port currently only supports RV64I based systems. Support for
RISC-V lives in in sysdeps/riscv. In addition to these ISAs, our glibc
port supports most of the currently-defined extensions: the A extension
for atomics, the M extension for multiplication, the C extension for
compressed instructions, and the F/D extensions for single/double
precision IEEE floating-point. Most of these extensions are handled by
GCC, but glibc defines various floating-point wrappers and emulation
routines as well as some atomic wrappers.
We support running glibc-based programs on Linux, the support for which
lives in sysdeps/unix/sysv/linux/riscv.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/Implies: New file.
* sysdeps/riscv/Makefile: Likewise.
* sysdeps/riscv/configure: Likewise.
* sysdeps/riscv/configure.ac: Likewise.
* sysdeps/riscv/nptl/Makefile: Likewise.
* sysdeps/riscv/preconfigure: Likewise.
* sysdeps/riscv/rv64/Implies-after: Likewise.
* sysdeps/riscv/rv64/rvd/Implies: Likewise.
* sysdeps/riscv/rv64/rvf/Implies: Likewise.
* sysdeps/unix/sysv/linux/riscv/Implies: Likewise.
* sysdeps/unix/sysv/linux/riscv/Makefile: Likewise.
* sysdeps/unix/sysv/linux/riscv/Versions: Likewise.
* sysdeps/unix/sysv/linux/riscv/configure: Likewise.
* sysdeps/unix/sysv/linux/riscv/configure.ac: Likewise.
* sysdeps/unix/sysv/linux/riscv/ldd-rewrite.sed: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/Implies: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/Makefile: Likewise.
* sysdeps/unix/sysv/linux/riscv/shlib-versions: Likewise.
I started with the aarch64 ABI lists and manually went through each
difference, ensuring that the missing entries had been deprecated along
the line. Darius generated the ulps files by running the test cases on QEMU.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/nofpu/libm-test-ulps: New file.
* sysdeps/riscv/nofpu/libm-test-ulps-name: Likewise.
* sysdeps/riscv/rv64/rvd/libm-test-ulps: Likewise.
* sysdeps/riscv/rv64/rvd/libm-test-ulps-name: Likewise.
* sysdeps/unix/sysv/linux/riscv/localplt.data: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libanl.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libdl.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libnsl.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/librt.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libutil.abilist: Likewise.
This contains the Linux-specific code for loading programs on RISC-V.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/unix/sysv/linux/riscv/dl-static.c: New file.
* sysdeps/unix/sysv/linux/riscv/ldconfig.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/ldsodefs.h: Likewise.
Contains the Linux system call interface, as well as the definitions of
a handful of system calls.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/nptl/nptl-sysdep.S: New file.
* sysdeps/unix/sysv/linux/riscv/arch-fork.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/clone.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/pt-vfork.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/syscall.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/riscv/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/riscv/vfork.S: Likewise.
This patch implements various atomic and locking routines on RISC-V. We
mandate the A extension on Linux-capable RISC-V systems, so this can
rely on always having the various atomic instructions availiable.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/nptl/bits/pthreadtypes-arch.h: New file.
* sysdeps/riscv/nptl/bits/semaphore.h: Likewise.
* sysdeps/riscv/nptl/libc-lowlevellock.c: Likewise.
* sysdeps/unix/sysv/linux/riscv/atomic-machine.h: Likewise.
This patch contains the miscellaneous math routines and headers we have
implemented for RISC-V. This includes things from <math.h> that aren't
completely ISA-generic, floating-point bit manipulation, and soft-fp
hooks.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/bits/fenv.h: New file.
* sysdeps/riscv/e_sqrtl.c: Likewise.
* sysdeps/riscv/fpu_control.h: Likewise.
* sysdeps/riscv/math-tests.h: Likewise.
* sysdeps/riscv/nofpu/Implies: Likewise.
* sysdeps/riscv/sfp-machine.h: Likewise.
* sysdeps/riscv/tininess.h: Likewise.
This patch implements TLS support for RISC-V. We support all four
standard TLS addressing modes (LE, IE, LD, and GD) when running on
Linux via NPTL. There is a draft psABI document that defines our TLS
ABI here
https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#thread-local-storage
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/dl-tls.h: New file.
* sysdeps/riscv/libc-tls.c: Likewise.
* sysdeps/riscv/nptl/tcb-offsets.sym: Likewise.
* sysdeps/riscv/nptl/tls.h: Likewise.
* sysdeps/riscv/stackinfo.h: Likewise.
This patch contains code that needs to directly know about the RISC-V
ABI, which is specified in a work-in-progress psABI document:
https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md
This is meant to contain all the RISC-V code that needs to explicitly
name registers or manage in-memory structure layout. This does not
contain any of the Linux-specific code.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/__longjmp.S: New file.
* sysdeps/riscv/backtrace.c: Likewise.
* sysdeps/riscv/bits/endian.h: Likewise.
* sysdeps/riscv/bits/setjmp.h: Likewise.
* sysdeps/riscv/bits/wordsize.h: Likewise.
* sysdeps/riscv/bsd-_setjmp.c: Likewise.
* sysdeps/riscv/bsd-setjmp.c: Likewise.
* sysdeps/riscv/dl-trampoline.S: Likewise.
* sysdeps/riscv/gccframe.h: Likewise.
* sysdeps/riscv/jmpbuf-offsets.h: Likewise.
* sysdeps/riscv/jmpbuf-unwind.h: Likewise.
* sysdeps/riscv/machine-gmon.h: Likewise.
* sysdeps/riscv/memusage.h: Likewise.
* sysdeps/riscv/setjmp.S: Likewise.
* sysdeps/riscv/sys/asm.h: Likewise.
* sysdeps/riscv/tls-macros.h: Likewise.
The RISC-V port contains a crti.S that simply contains a link to
PREINIT_FUNCTION (when defined). As this should be entirely generic,
Joseph Myers suggested that we update the generic init_array version to
contain this. Since RISC-V is the only user of init_array this won't
break any existing ports.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/init_array/crti.S (.section .init_array): Add
PREINIT_FUNCTION when defined.
copy_file_range syscall was added for microblaze in 4.10.
This patch makes the MicroBlaze kernel-features.h undefine
__ASSUME_COPY_FILE_RANGE for toolchains built with kernel headers < 4.10.
* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
(__ASSUME_COPY_FILE_RANGE) [__LINUX_KERNEL_VERSION < 0x040A00]: Undef.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=7181e5590e5ba898804aef3ee6be7f27606e6f8b
Signed-off-by: Romain Naour <romain.naour@gmail.com>
* sysdeps/mach/hurd/net/ethernet.h: Include <stdint.h>.
* sysdeps/mach/hurd/net/if_arp.h: Include <stdint.h>.
* sysdeps/mach/hurd/net/if_ppp.h: Do not include non-existing
<net/ppp_defs.h>.
_POSIX_CHOWN_RESTRICTED and _POSIX_NO_TRUNC should be always defined.
* sysdeps/mach/hurd/bits/posix_opt.h (_POSIX_CHOWN_RESTRICTED,
_POSIX_NO_TRUNC): Define to 0.
400669754de4 ('hurd: Fix nscd build') had the side effect of making
libc's freeaddrinfo expose freeifaddrs through __check_pf. We can just
move the renames to gai.c itself, along others.
* sysdeps/mach/hurd/check_pf.c (__getifaddrs, __freeifaddrs): Do not
define macros.
* nscd/gai.c (__getifaddrs): Define macro to getifaddrs.
(__freeifaddrs): Define macro to freeifaddrs.
* hurd/hurd.h (__hurd_fail): Always declare function, and provide inline
version only if __USE_EXTERN_INLINES is defined.
* hurd/hurd/fd.h (_hurd_fd_error_signal, _hurd_fd_error, __hurd_dfail,
__hurd_sockfail): Likewise.
(_hurd_fd_get): Always declare functions, and provide inline versions
only if __USE_EXTERN_INLINES and _LIBC are defined and IS_IN(libc).
* hurd/hurd/port.h (_hurd_port_init, _hurd_port_locked_get,
_hurd_port_get, _hurd_port_free, _hurd_port_locked_set,
_hurd_port_set): Always declare functions, and provide inline versions
only if __USE_EXTERN_INLINES and _LIBC are defined and
IS_IN(libc).
* hurd/hurd/signal.h (_hurd_self_sigstate, _hurd_critical_section_lock,
_hurd_critical_section_unlock): Likewise.
* hurd/hurd/threadvar.h (__hurd_threadvar_location_from_sp,
* __hurd_threadvar_location): Likewise.
* hurd/hurd/userlink.h (_hurd_userlink_link, _hurd_userlink_unlink,
_hurd_userlink_clear): Likewise.
* mach/lock-intern.h (__spin_lock_init, __spin_lock, __mutex_lock,
__mutex_unlock, __mutex_trylock): Always declare functions, and provide
inline versions only if __USE_EXTERN_INLINES and _LIBC are defined.
* mach/mach/mig_support.h (__mig_strncpy): Likewise.
* sysdeps/generic/machine-lock.h (__spin_unlock, __spin_try_lock,
__spin_lock_locked): Likewise.
* sysdeps/mach/i386/machine-lock.h (__spin_unlock, __spin_try_lock,
__spin_lock_locked): Likewise.
* mach/spin-lock.c (__USE_EXTERN_INLINES): Define to 1.
* hurd/Versions (libc: GLIBC_2.27): Add _hurd_fd_error_signal,
_hurd_fd_error, __hurd_dfail, __hurd_sockfail, _hurd_port_locked_set,
__hurd_threadvar_location_from_sp, __hurd_threadvar_location,
_hurd_userlink_link, _hurd_userlink_unlink, _hurd_userlink_clear.
* sysdeps/mach/hurd/getresgid.c (__getresgid): Set result from
critical section to make code simpler and avoid warning.
* sysdeps/mach/hurd/getresuid.c (__getresuid): Set result from
critical section to make code simpler and avoid warning.
Making `special_profil_failure' both avoids warning "variable
'special_profil_failure' set but not used", and makes it easier to
access with gdb.
* sysdeps/mach/hurd/profil.c (special_profil_failure): Move variable
to global scope.
This was dropped from GNU Mach in 2006.
* mach/Machrules (MIGFLAGS): Do not set -DMACH_IPC_COMPAT=0.
* mach/mach/mach_traps.h: Drop comment about MACH_IPC_COMPAT.
* sysdeps/mach/hurd/fork.c (__fork): Drop special casing
MACH_IPC_COMPAT.
timer_ptr2id and timer_id2ptr are used to convert between
application-visible timer_t and struct timer_node *. timer_ptr2id was made
to use void * instead of timer_t in 49b650430eb5 ('Update.') for no reason.
It happens that on Linux timer_t is void *, so both that change and this
commit are no-ops there, but not on systems where timer_t is not void *.
Using timer_ptr2id for filling sival_ptr also does not make sense since that
actually is a void *.
* sysdeps/pthread/posix-timer.h (timer_ptr2id): Cast to timer_t
instead of void *.
* sysdeps/pthread/timer_create.c (timer_create): Do not use
timer_ptr2id to cast struct timer_node * to void *.
In commit cba595c350e52194e10c0006732e1991e3d0803b and commit
f81ddabffd76ac9dd600b02adbf3e1dac4bb10ec, ABI compatibility with
applications was broken by increasing the size of the on-stack
allocated __pthread_unwind_buf_t beyond the oringal size.
Applications only have the origianl space available for
__pthread_unwind_register, and __pthread_unwind_next to use,
any increase in the size of __pthread_unwind_buf_t causes these
functions to write beyond the original structure into other
on-stack variables leading to segmentation faults in common
applications like vlc. The only workaround is to version those
functions which operate on the old sized objects, but this must
happen in glibc 2.28.
Thank you to Andrew Senkevich, H.J. Lu, and Aurelien Jarno, for
submitting reports and tracking the issue down.
The commit reverts the above mentioned commits and testing on
x86_64 shows that the ABI compatibility is restored. A tst-cleanup1
regression test linked with an older glibc now passes when run
with the newly built glibc. Previously a tst-cleanup1 linked with
an older glibc would segfault when run with an affected glibc build.
Tested on x86_64 with no regressions.
Signed-off-by: Carlos O'Donell <carlos@redhat.com>
