This patch increases the minimum Linux kernel version for glibc to
2.6.32, as discussed in the thread starting at
<https://sourceware.org/ml/libc-alpha/2014-01/msg00511.html>.
This patch just does the minimal change to arch_minimum_kernel
settings (and LIBC_LINUX_VERSION, which determines the minimum kernel
headers version, as it doesn't make sense for that to be older than
the minimum kernel that can be used at runtime). Followups would be
expected to do, roughly and not necessarily precisely in this order:
* Remove __LINUX_KERNEL_VERSION checks in kernel-features.h files
where those checks are always true / always false for kernels 2.6.32
and above.
* Otherwise simplify/improve conditionals in those files (for example,
where defining once in the main file then undefining in
architecture-specific files makes things clearer than having lots of
separate definitions of the same macro), possibly fixing in the
process cases where a macro should optimally have been defined for a
given architecture but wasn't. (In the review in preparation for
this version increase I checked what the right conditions should be
for all macros in the main kernel-features.h whose definitions there
would have been affected by the increase - but I only fixed that
subset of the issues found where --enable-kernel=2.6.32 would have
caused a kernel feature to be wrongly assumed to be present, not any
cases where a feature is not assumed but could be assumed.)
* Remove conditionals on __ASSUME_* where they can now be taken to be
always-true, and the definitions when the macros are only used in
Linux-specific files.
* Split more architectures out of the main kernel-features.h (like
ex-ports architectures), once various of the architecture
conditionals there have been eliminated so the new
architecture-specific files are no larger than actually necessary.
Tested x86_64.
2014-03-27 Joseph Myers <joseph@codesourcery.com>
[BZ #9894]
* sysdeps/unix/sysv/linux/configure.ac (LIBC_LINUX_VERSION):
Change to 2.6.32.
(arch_minimum_kernel): Change all 2.6.16 settings to 2.6.32.
* sysdeps/unix/sysv/linux/configure: Regenerated.
* sysdeps/unix/sysv/linux/microblaze/configure.ac: Remove file.
* sysdeps/unix/sysv/linux/microblaze/configure: Likewise.
* sysdeps/unix/sysv/linux/tile/configure.ac: Likewise.
* sysdeps/unix/sysv/linux/tile/configure: Likewise.
* README: Update reference to required Linux kernel version.
* manual/install.texi (Linux): Update reference to required Linux
kernel headers version.
* INSTALL: Regenerated.
We support older kernels that lack this header, so check for it
before we try to use it.
Reported-by: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Autoconf has been deprecating configure.in for quite a long time.
Rename all our configure.in and preconfigure.in files to .ac.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
__fe_nomask_env.
* sysdeps/powerpc/fpu/fe_nomask.c: Add libm_hidden_def.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_nomask.c: Likewise.
* sysdeps/powerpc/bits/fenv.h: Make safe for C++.
* sysdeps/unix/sysv/linux/powerpc/bits/mathinline.h: New file.
* sysdeps/powerpc/fpu/fegetexcept.c (__fegetexcept): Rename
function from fegetexcept and make old name weak alias.
* include/fenv.h: Declare __fegetexcept.
* sysdeps/powerpc/fpu/fedisblxcpt.c: Use __fegetexcept instead of
fegetexcept.
* sysdeps/powerpc/fpu/feenablxcpt.c: Likewise.
* sysdeps/powerpc/fpu/fraiseexcpt.c (__feraiseexcept): Avoid call
to fetestexcept.
* sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Use __frexpl
instead of frexpl to avoid local PLT.
* math/s_significandl.c (__significandl): Use __ilogbl instead of
ilogbl to avoid local PLT.
* sysdeps/ieee754/ldbl-128ibm/s_expm1l.c (__expm1l): Use __ldexpl
instead of ldexpl to avoid local PLT.
* sysdeps/ieee754/ldbl-128ibm/e_expl.c (__ieee754_expl): Use
__roundl not roundl to avoid local PLT.
* sysdeps/ieee754/ldbl-128/e_j0l.c: Use function names which avoid
local PLTs. Use __sincosl instead of separate sinl and cosl
calls.
* sysdeps/ieee754/ldbl-128/e_j1l.c: Likewise.
* elf/tls-macros.h: Add Sparc64 defines.
* sysdeps/sparc/sparc64/dl-machine.h (sparc64_fixup_plt): Mark as
always_inline.
(elf_machine_fixup_plt): Likewise.
(elf_machine_rela): Handle TLS relocations.
(elf_machine_type_cleaa): Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h
(SYSCALL_ERROR_HANDLER_ENTRY): Use sethi/or for GOT reloc.
It does not always fit in R_SPARC_GOT13 when building -fPIC.
Also, add TLS handling.
* sysdeps/unix/sysv/linux/configure.in (arch_minimum_kernel):
Increase it to 2.4.21 for sparc64.
* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: NULL terminate
backtrace by zero'ing out %fp. Store away flags, func_ptr,
and func_arg in global registers not local registers.
* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Handle PTID, TLS,
and CTID arguments properly. Add RESET_PID handling.
* sysdeps/unix/sysv/linux/sparc/sparc64/pause.c: Rework so that we
do not invoke __sigprocmask(). We can always assume rt signals
are present on sparc64, so just do an inline syscall.
2005-04-13 Jakub Jelinek <jakub@redhat.com>
* sysdeps/sparc/sparc64/dl-machine.h: Add dl_machine_h multiple
inclusion guard for the first half of the header.
(elf_machine_type_class, ELF_MACHINE_JMP_SLOT, ELF_MACHINE_NO_REL,
ELF_MACHINE_PLTREL_OVERLAP, elf_machine_runtime_setup,
elf_machine_relplt, DL_STACK_END, RTLD_START): Move into the
#ifndef dl_machine_h guarded part of the header.
2004-07-05 Ulrich Drepper <drepper@redhat.com>
* elf/dl-init.c: Don't define and use _dl_starting_up if
HAVE_INLINED_SYSCALLS is defined and the variable is not used.
* elf/dl-support.c: Likewise.
* elf/rtld.c: Likewise.
* elf/dl-misc.c (_dl_debug_vdprintf): Use writev syscall directly
if HAVE_INLINED_SYSCALLS is defined.
* sysdeps/powerpc/powerpc64/dl-machine.h: Don't rest _dl_starting_up
here.
* sysdeps/powerpc/powerpc32/dl-start.S: Likewise.
* sysdeps/unix/sysv/linux/configure.in: Define HAVE_INLINED_SYSCALLS.
* config.h.in: Add entry for HAVE_INLINED_SYSCALLS.
* sysdeps/posix/profil.c: If compiled for ld.so, omit code which
is needed to stop profiling.
* elf/dl-open.c (dl_open_worker): If a newly opened object is to be
profile make sure it cannot be unloaded.
* sysdeps/unix/sysv/linux/dl-origin.c: Inline readlink syscall.
* sysdeps/unix/sysv/linux/fcntl.c: If compiled without cancellation
support, make sure the helper function is inlined.
* sysdeps/unix/sysv/linux/pread.c: Likewise.
* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/i386/fcntl.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/fcntl.c: Likewise.
* sysdeps/unix/sysv/linux/configure.in: If arch_minimum_kernel was
already set, don't set it or libc_cv_gcc_unwind_find_fde.
* sysdeps/unix/sysv/linux/configure: Regenerated.
* sysdeps/unix/sysv/linux/configure.in (libc_cv_slibdir): Use
lib64 for mips64/n64 and lib32 for mips64/n32.
(ldd_rewrite_script): Needed for all mips64 configurations.
* sysdeps/unix/sysv/linux/configure: Rebuilt.
* sysdeps/unix/sysv/linux/mips/mips64/ldd-rewrite.sed: New file.
* sysdeps/unix/sysv/linux/mips/mips64/Dist: New file.
2003-02-25 Roland McGrath <roland@redhat.com>
* sysdeps/powerpc/powerpc64/dl-machine.h: Support new TLS relocs.
* sysdeps/powerpc/powerpc64/dl-tls.h: New file.
2003-02-03 Ulrich Drepper <drepper@redhat.com>
* allocatestack.c (allocate_stack): Implement coloring of the
allocated stack memory. Rename pagesize to pagesize_m1. It's the
size minus one. Adjust users.
* sysdeps/hppa/Makefile (CFLAGS-rtld.c): New variable.
Set -mdisable-fpregs for this file.
2002-11-11 Carlos O'Donell <carlos@baldric.uwo.ca>
* sysdeps/unix/sysv/linux/configure.in:
Make 2.4.19 minimum linux kernel for hppa, and add unwind symbols
from gcc-3.0 era for backwards compatibility.
* sysdeps/unix/sysv/linux/configure: Regenerate.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h:
Define mcontext_t as a sigcontext.
* dlfcn/dlerror.c (fini): New function, __attribute__ ((destructor)).
Free memory in `last_result' if it was used.
* resolv/nss_dns/dns-network.c (getanswer_r): In BYNAME case, search
all aliases for one that matches the "<dotted-quad>.IN-ADDR.ARPA" form.
Do the parsing inline instead of copying strings and calling
inet_network, and properly skip all alias names not matching the form.
* sysdeps/unix/sysv/linux/Makefile
($(objpfx)syscall-%.h $(objpfx)syscall-%.d): Take code from
sparc/Makefile to produce a bi-arch file as needed.
That's now parameterized by the variable $(64bit-predefine).
Use LC_ALL=C for `comm' commands in that rule.
No longer conditional on [$(no_syscall_list_h)].
* sysdeps/unix/sysv/linux/sparc/Makefile: Remove replacement rules.
(64bit-predefine): New variable.
* sysdeps/unix/sysv/linux/x86_64/Makefile: Likewise.
* sysdeps/unix/sysv/linux/s390/Makefile: New file.
* sysdeps/unix/sysv/linux/powerpc/Makefile
(64bit-predefine): New variable.
2002-10-15 Roland McGrath <roland@redhat.com>
* sysdeps/unix/sysv/linux/Makefile
($(objpfx)syscall-%.h $(objpfx)syscall-%.d)
* login/utmp-private.h: Declare __libc_utmp_lock.
* sysdeps/unix/getlogin_r.c (getlogin_r): Take __libc_utmp_lock once
call __libc_utmp_jump_table functions directly, instead of using
__setutent et al.
* sysdeps/unix/sysv/linux/configure.in: Use case instead of if.
* sysdeps/unix/sysv/linux/configure: Regenerated.
