Commit Graph

16 Commits

Author SHA1 Message Date
Joseph Myers
6d7e8eda9b Update copyright dates with scripts/update-copyrights 2023-01-06 21:14:39 +00:00
Paul Eggert
581c785bf3 Update copyright dates with scripts/update-copyrights
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
2022-01-01 11:40:24 -08:00
Paul Eggert
2b778ceb40 Update copyright dates with scripts/update-copyrights
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
2021-01-02 12:17:34 -08:00
Szabolcs Nagy
45b1e17e91 aarch64: use PTR_ARG and SIZE_ARG instead of DELOUSE
DELOUSE was added to asm code to make them compatible with non-LP64
ABIs, but it is an unfortunate name and the code was not compatible
with ABIs where pointer and size_t are different. Glibc currently
only supports the LP64 ABI so these macros are not really needed or
tested, but for now the name is changed to be more meaningful instead
of removing them completely.

Some DELOUSE macros were dropped: clone, strlen and strnlen used it
unnecessarily.

The out of tree ILP32 patches are currently not maintained and will
likely need a rework to rebase them on top of the time64 changes.
2020-12-31 16:50:58 +00:00
Joseph Myers
d614a75396 Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Paul Eggert
5a82c74822 Prefer https to http for gnu.org and fsf.org URLs
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
2019-09-07 02:43:31 -07:00
Joseph Myers
04277e02d7 Update copyright dates with scripts/update-copyrights.
* 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.
2019-01-01 00:11:28 +00:00
Joseph Myers
688903eb3e Update copyright dates with scripts/update-copyrights.
* 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.
2018-01-01 00:32:25 +00:00
Joseph Myers
bfff8b1bec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Steve Ellcey
389d1f1b23 Partial ILP32 support for aarch64.
* 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.
2016-11-28 09:01:23 -08:00
Joseph Myers
f7a9f785e5 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Szabolcs Nagy
2b1d7148e3 [AArch64] make setcontext etc functions consistent with the kernel
since
https://sourceware.org/ml/libc-alpha/2014-04/msg00006.html
setcontext etc is no longer tied to the kernel use of ucontext.

in that patch the ucontext reserved space is not used consistently
with the kernel abi: the d8,d9 pair is saved in the slot of q8.

this is ok (*context functions work together), but probably not
desirable (ucontexts created by the kernel and getcontext are
subtly different).

the fix just replaces dN with qN in the save/restore code, which
does a bit more than needed (saves/restores the top half of qN that
is not callee saved), but this should not be an issue (and avoids
having to deal with endianness).

(kernel fpsimd context layout: the first 64bit contains 0x210 the fpsimd
context size and 0x46508001 the FPSIMD_MAGIC, the second 64bit is for
fpsr and fpcr, and the rest is the 128bit q0..q31 registers).

given d8=8.1, d9=9.1,... d15=15.1, the context created by getcontext is

current:

(gdb) x/40xg ctx.uc_mcontext.__reserved
0x410df0 <ctx+464>:     0x0000021046508001      0x0000000000000000
0x410e00 <ctx+480>:     0x0000000000000000      0x0000000000000000
0x410e10 <ctx+496>:     0x0000000000000000      0x0000000000000000
0x410e20 <ctx+512>:     0x0000000000000000      0x0000000000000000
0x410e30 <ctx+528>:     0x0000000000000000      0x0000000000000000
0x410e40 <ctx+544>:     0x0000000000000000      0x0000000000000000
0x410e50 <ctx+560>:     0x0000000000000000      0x0000000000000000
0x410e60 <ctx+576>:     0x0000000000000000      0x0000000000000000
0x410e70 <ctx+592>:     0x0000000000000000      0x0000000000000000
0x410e80 <ctx+608>:     0x4020333333333333      0x4022333333333333
0x410e90 <ctx+624>:     0x0000000000000000      0x0000000000000000
0x410ea0 <ctx+640>:     0x4024333333333333      0x4026333333333333
0x410eb0 <ctx+656>:     0x0000000000000000      0x0000000000000000
0x410ec0 <ctx+672>:     0x4028333333333333      0x402a333333333333
0x410ed0 <ctx+688>:     0x0000000000000000      0x0000000000000000
0x410ee0 <ctx+704>:     0x402c333333333333      0x402e333333333333
0x410ef0 <ctx+720>:     0x0000000000000000      0x0000000000000000
0x410f00 <ctx+736>:     0x0000000000000000      0x0000000000000000
0x410f10 <ctx+752>:     0x0000000000000000      0x0000000000000000
0x410f20 <ctx+768>:     0x0000000000000000      0x0000000000000000

fixed:

(gdb) x/40xg ctx.uc_mcontext.__reserved
0x410d70 <ctx+464>:     0x0000021046508001      0x0000000000000000
0x410d80 <ctx+480>:     0x0000000000000000      0x0000000000000000
0x410d90 <ctx+496>:     0x0000000000000000      0x0000000000000000
0x410da0 <ctx+512>:     0x0000000000000000      0x0000000000000000
0x410db0 <ctx+528>:     0x0000000000000000      0x0000000000000000
0x410dc0 <ctx+544>:     0x0000000000000000      0x0000000000000000
0x410dd0 <ctx+560>:     0x0000000000000000      0x0000000000000000
0x410de0 <ctx+576>:     0x0000000000000000      0x0000000000000000
0x410df0 <ctx+592>:     0x0000000000000000      0x0000000000000000
0x410e00 <ctx+608>:     0x4020333333333333      0x0000000000000000
0x410e10 <ctx+624>:     0x4022333333333333      0x0000000000000000
0x410e20 <ctx+640>:     0x4024333333333333      0x0000000000000000
0x410e30 <ctx+656>:     0x4026333333333333      0x0000000000000000
0x410e40 <ctx+672>:     0x4028333333333333      0x0000000000000000
0x410e50 <ctx+688>:     0x402a333333333333      0x0000000000000000
0x410e60 <ctx+704>:     0x402c333333333333      0x0000000000000000
0x410e70 <ctx+720>:     0x402e333333333333      0x0000000000000000
0x410e80 <ctx+736>:     0x0000000000000000      0x0000000000000000
0x410e90 <ctx+752>:     0x0000000000000000      0x0000000000000000
0x410ea0 <ctx+768>:     0x0000000000000000      0x0000000000000000

2015-07-06  Szabolcs Nagy  <szabolcs.nagy@arm.com>

	* sysdeps/unix/sysv/linux/aarch64/getcontext.S (__getcontext): Use q
	registers instead of d ones so the layout is kernel abi compatible.
	* sysdeps/unix/sysv/linux/aarch64/setcontext.S (__setcontext): Likewise.
	* sysdeps/unix/sysv/linux/aarch64/swapcontext.S (__swapcontext):
	Likewise.# Please enter the commit message for your changes. Lines starting
2015-07-06 12:46:43 +01:00
Carlos O'Donell
c92d40c0bc Bug 18125: Call exit after last linked context.
There appears to be a discrepancy among the implementations
of setcontext with regards to the function called once the last
linked-to context has finished executing via setcontext.

The POSIX standard says:
~~~
If the uc_link member of the ucontext_t structure pointed to by
the ucp argument is equal to 0, then this context is the main
context, and the thread will exit when this context returns.
~~~

It says "exit" not "exit immediately" nor "exit without running
functions registered with atexit or on_exit."

Therefore the AArch64, ARM, hppa and NIOS II implementations are
wrong and no test detects it.

It is questionable if this should even be fixed or just documented
that the above 4 targets are wrong. The functions are deprecated
and nobody should be using them, but at the same time it silly to
have cross-target differences that make it hard to port old
applications from say x86_64 to AArch64.

Therefore I will ix the 4 arches, and checkin a regression
test to prevent it from changing again.

https://sourceware.org/ml/libc-alpha/2015-03/msg00720.html
2015-05-08 11:29:38 -04:00
Joseph Myers
b168057aaa Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Will Newton
37d3500738 aarch64: Re-implement setcontext without rt_sigreturn syscall
The current implementation of setcontext uses rt_sigreturn to restore
the contents of registers. This contrasts with the way most other
architectures implement setcontext:

  powerpc64, mips, tile:

  Call rt_sigreturn if context was created by a call to a signal handler,
  otherwise restore in user code.

  powerpc32:

  Call swapcontext system call and don't call sigreturn or rt_sigreturn.

  x86_64, sparc, hppa, sh, ia64, m68k, s390, arm:

  Only support restoring "synchronous" contexts, that is contexts
  created by getcontext, and restoring in user code and don't call
  sigreturn or rt_sigreturn.

  alpha:

  Call sigreturn (but not rt_sigreturn) in all cases to do the restore.

The text of the setcontext manpage suggests that the requirement to be
able to restore a signal handler created context has been dropped from
SUSv2:

  If  the context was obtained by a call to a signal handler, then old
  standard text says that "program execution continues with the program
  instruction following the instruction interrupted by the signal".
  However, this sentence was removed in SUSv2, and the present verdict
  is "the result is unspecified".

Implementing setcontext by calling rt_sigreturn unconditionally causes
problems when used with sigaltstack as in BZ #16629. On this basis it
seems that aarch64 is broken and that new ports should only support
restoring contexts created with getcontext and do not need to call
rt_sigreturn at all.

This patch re-implements the aarch64 setcontext function to restore
the context in user code in a similar manner to x86_64 and other ports.

ChangeLog:

2014-04-17  Will Newton  <will.newton@linaro.org>

	[BZ #16629]
	* sysdeps/unix/sysv/linux/aarch64/setcontext.S (__setcontext):
	Re-implement to restore registers in user code and avoid
	rt_sigreturn system call.
2014-04-17 11:38:50 +01:00
Marcus Shawcroft
75eff3fe90 Relocate AArch64 from ports to libc.
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.
2014-02-11 11:36:00 +00:00