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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
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Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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Passing a second argument to the ifunc resolver allows accessing
AT_HWCAP2 values from the resolver. AArch64 will start using AT_HWCAP2
on linux because for ilp32 to remain compatible with lp64 ABI no more
than 32bit hwcap flags can be in AT_HWCAP which is already used up.
Currently the relocation ordering logic does not guarantee that ifunc
resolvers can call libc apis or access libc objects, so only the
resolver arguments and runtime environment dependent instructions can
be used to do the dispatch (this affects ifunc resolvers outside of
the libc).
Since ifunc resolver is target specific and only supposed to be
called by the dynamic linker, the call ABI can be changed in a
backward compatible way:
Old call ABI passed hwcap as uint64_t, new abi sets the
_IFUNC_ARG_HWCAP flag in the hwcap and passes a second argument
that's a pointer to an extendible struct. A resolver has to check
the _IFUNC_ARG_HWCAP flag before accessing the second argument.
The new sys/ifunc.h installed header has the definitions for the
new ABI, everything is in the implementation reserved namespace.
An alternative approach is to try to support extern calls from ifunc
resolvers such as getauxval, but that seems non-trivial
https://sourceware.org/ml/libc-alpha/2017-01/msg00468.html
* sysdeps/aarch64/Makefile: Install sys/ifunc.h and add tests.
* sysdeps/aarch64/dl-irel.h (elf_ifunc_invoke): Update to new ABI.
* sysdeps/aarch64/sys/ifunc.h: New file.
* sysdeps/aarch64/tst-ifunc-arg-1.c: New file.
* sysdeps/aarch64/tst-ifunc-arg-2.c: New file.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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* sysdeps/aarch64/dl-irel.h: (elf_ifunc_invoke): Change argument type
in resolver call.
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* sysdeps/aarch64/crti.S: Add include of sysdep.h.
(call_weak_fn): Use PTR_REG to get correct reg name in ILP32.
* sysdeps/aarch64/dl-irel.h: Add include of sysdep.h.
(elf_irela): Use AARCH64_R macro to get correct relocation in ILP32.
* sysdeps/aarch64/dl-machine.h: Add include of sysdep.h.
(elf_machine_load_address, RTLD_START, RTLD_START_1, RTLD_START,
elf_machine_type_class, ELF_MACHINE_JMP_SLOT, elf_machine_rela,
elf_machine_lazy_rel): Add ifdef's for ILP32 support.
* sysdeps/aarch64/dl-tlsdesc.S (_dl_tlsdesc_return,
_dl_tlsdesc_return_lazy, _dl_tlsdesc_dynamic,
_dl_tlsdesc_resolve_hold): Extend pointers in ILP32, use PTR_REG
to get correct reg name for ILP32.
* sysdeps/aarch64/dl-trampoline.S (ip01): New Macro.
(RELA_SIZE): New Macro.
(_dl_runtime_resolve, _dl_runtime_profile): Use new macros and PTR_REG
to support ILP32.
* sysdeps/aarch64/jmpbuf-unwind.h (_JMPBUF_CFA_UNWINDS_ADJ): Add
cast for ILP32 mode.
* sysdeps/aarch64/memcmp.S (memcmp): Extend arg pointers for ILP32 mode.
* sysdeps/aarch64/memcpy.S (memmove, memcpy): Ditto.
* sysdeps/aarch64/memset.S (__memset): Ditto.
* sysdeps/aarch64/strchr.S (strchr): Ditto.
* sysdeps/aarch64/strchrnul.S (__strchrnul): Ditto.
* sysdeps/aarch64/strcmp.S (strcmp): Ditto.
* sysdeps/aarch64/strcpy.S (strcpy): Ditto.
* sysdeps/aarch64/strlen.S (__strlen): Ditto.
* sysdeps/aarch64/strncmp.S (strncmp): Ditto.
* sysdeps/aarch64/strnlen.S (strnlen): Ditto.
* sysdeps/aarch64/strrchr.S (strrchr): Ditto.
* sysdeps/unix/sysv/linux/aarch64/clone.S: Ditto.
* sysdeps/unix/sysv/linux/aarch64/setcontext.S (__setcontext): Ditto.
* sysdeps/unix/sysv/linux/aarch64/swapcontext.S (__swapcontext): Ditto.
* sysdeps/aarch64/__longjmp.S (__longjmp): Extend pointers in ILP32,
change PTR_MANGLE call to use register numbers instead of names.
* sysdeps/unix/sysv/linux/aarch64/getcontext.S (__getcontext): Ditto.
* sysdeps/aarch64/setjmp.S (__sigsetjmp): Extend arg pointers for
ILP32 mode, change PTR_MANGLE calls to use register numbers.
* sysdeps/aarch64/start.S (_start): Ditto.
* sysdeps/aarch64/nptl/bits/pthreadtypes.h
(__PTHREAD_RWLOCK_INT_FLAGS_SHARED): New define.
(__SIZEOF_PTHREAD_ATTR_T, __SIZEOF_PTHREAD_MUTEX_T,
__SIZEOF_PTHREAD_MUTEXATTR_T, __SIZEOF_PTHREAD_COND_T,
__SIZEOF_PTHREAD_COND_COMPAT_T, __SIZEOF_PTHREAD_CONDATTR_T,
__SIZEOF_PTHREAD_RWLOCK_T, __SIZEOF_PTHREAD_RWLOCKATTR_T,
__SIZEOF_PTHREAD_BARRIER_T, __SIZEOF_PTHREAD_BARRIERATTR_T):
Make defined values dependent on __ILP32__.
* sysdeps/aarch64/nptl/bits/semaphore.h (__SIZEOF_SEM_T): Change define.
(sem_t): Change __align type.
* sysdeps/aarch64/sysdep.h (AARCH64_R, PTR_REG, PTR_LOG_SIZE, DELOUSE,
PTR_SIZE): New Macros.
(LDST_PCREL, LDST_GLOBAL) Update to use PTR_REG.
* sysdeps/unix/sysv/linux/aarch64/bits/fcntl.h (O_LARGEFILE):
Set when in ILP32 mode.
(F_GETLK64, F_SETLK64, F_SETLKW64): Only set in LP64 mode.
* sysdeps/unix/sysv/linux/aarch64/dl-cache.h (DL_CACHE_DEFAULT_ID):
Set elf flags for ILP32.
(add_system_dir): Set ILP32 library directories.
* sysdeps/unix/sysv/linux/aarch64/init-first.c
(_libc_vdso_platform_setup): Set minimum kernel version for ILP32.
* sysdeps/unix/sysv/linux/aarch64/ldconfig.h
(SYSDEP_KNOWN_INTERPRETER_NAMES): Add ILP32 names.
* sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h (GET_PC, SET_PC):
New Macros.
* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Handle ILP32 pointers.
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This patch moves the AArch64 port to the main sysdeps hierarchy. The
move is essentially:
git mv ports/sysdeps/aarch64 sysdeps/aarch64
git mv ports/sysdeps/unix/sysv/linux/aarch64 sysdeps/unix/sysv/linux/aarch64
The README is updated and I've updated ChangeLog.aarch64 along the
lines of the ARM move. The AArch64 build has been tested to confirm
that there were no changes in objdump -dr output or the shared
objects.
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