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
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
This patch fixes the missing posix_fadvise64 symbol for static build
required for _FILE_OFFSET_BITS=64 on mips64 build.
Checked on a mips64-linux-gnu build with run-built-tests=no.
[BZ #21232]
* sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c: Add
posix_fadvise64 weak_alias for static build.
Recent binutils versions (at least 2.27) complains about libc.so
when linking sotruss-lib.so with:
libc.so:(*IND*+0x0): multiple definition of `posix_fadvise64@GLIBC_2.2'
libc.so::(.text+0xcf940): first defined here
libc.so:(*IND*+0x0): multiple definition of `posix_fadvise64'
collect2: error: ld returned 1 exit status
Dynamic symbols for libc.so shows (readelf --dyn-syms):
262: 000000000010b950 28 FUNC GLOBAL DEFAULT 12 posix_fadvise64@GLIBC_2.2
417: 000000000010b950 28 FUNC WEAK DEFAULT 12 posix_fadvise64@@GLIBC_2.2
1505: 000000000010b950 28 FUNC GLOBAL DEFAULT 12 posix_fadvise64@@GLIBC_2.3.3
That is, two separate definitions at version GLIBC_2.2. The issue is
sysdeps/unix/sysv/linux/posix_fadvise64.c creates posix_fadvise64 weak_alias,
while sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c then adds
compat_symbol / versioned_symbol calls.
The patch remove the weak_alias definition on mips64 specific version so
direct weak_alias is disabled.
Checked on mips64n64 build with binutils 2.27.51.20161012.
* sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c:
Undefine weak_alias.
This patch consolidates mostly of the Linux posix_fadvise{64} implementations
on sysdeps/unix/sysv/linux/posix_fadvise{64}.c. It still keeps arch-specific
files for:
* S390-32: it uses a packed structure to pass all the arguments on syscall.
It is the only supported port that implements __NR_fadvise64_64 in this
way.
* ARM: it does not implement __NR_fadvise64 (as other 32-bits ports), so
posix_fadvise calls internal posix_fadvise64 symbol.
* MIPS64 n64: it requires a different version number that other ports.
The new macro SYSCALL_LL{64} is used to handle the offset argument and
INTERNAL_SYSCALL_CALL to handle passing the correct number of expect
arguments.
The default Linux adds two new defines a port can use to control how
__NR_fadvise64_64 passes the kernel arguments:
* __ASSUME_FADVISE64_64_6ARG: the 'advise' argument is moved on second
position. This is the case of powerpc32 and arm to avoid implement
7 argument syscall.
* __ASSUME_FADVISE64_64_NO_ALIGN: for ABIs that defines
__ASSUME_ALIGNED_REGISTER_PAIRS packs the offset without the leading
'0'. This is the case of tile 32 bits.
ARM also defines __NR_fadvise64_64 as __NR_arm_fadvise64_64 (which is also
handled on arch kernel-feature.h).
Tested on x86_64, x32, i686, armhf, and aarch64.
* posix/Makefile (tests): Add tst-posix_fadvise and tst-posix_fadvise64.
* posix/tst-posix_fadvise.c: New file.
* posix/tst-posix_fadvise64.c: Likewise.
* posix/tst-posix_fadvise-common.c: Likewise.
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_FADVISE64_64_6ARG): Define.
* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
[!__powerpc64__] (__ASSUME_FADVISE64_64_6ARG): Add define.
* sysdeps/unix/sysv/linux/arm/posix_fadvise64.c: Remove file.
* sysdeps/unix/sysv/linux/generic/wordsize-32/posix_fadvise.c: Likewise.
* sysdeps/unix/sysv/linux/i386/posix_fadvise64.S: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/posix_fadvise.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/posix_fadvise64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/posix_fadvise.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/posix_fadvise64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise64.c:
Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/posix_fadvise.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/posix_fadvise64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c
(SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3) [__posix_fadvise64_l64]:
Alias to __posix_fadvise64_l32.
(SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3) [__posix_fadvise64_l32]:
Add compat definition to posix_fadvise64.
(SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3) [__posix_fadvise64_l64]:
Add versioned definition to posix_fadvise64.
* sysdeps/unix/sysv/linux/posix_fadvise.c (posix_fadvise): Build iff
__OFF_T_MATCHES_OFF64_T is defined, use INTERNAL_SYSCALL_CALL, add
__ASSUME_FADVISE64_64_6ARG/__ASSUME_FADVISE64_64_NO_ALIGN support.
* sysdeps/unix/sysv/linux/posix_fadvise64.c (posix_fadvise64): Add
__ASSUME_FADVISE64_64_NO_ALIGN support and use INTERNAL_SYSCALL_CALL.
I've moved the MIPS port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply
git mv ports/sysdeps/mips sysdeps/mips
git mv ports/sysdeps/unix/mips sysdeps/unix/mips
git mv ports/sysdeps/unix/sysv/linux/mips sysdeps/unix/sysv/linux/mips
and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.mips similar to those in other files.
Tested that disassembly of installed shared libraries for mips is the
same before and after this patch (except for ld.so where paths in
assertions are involved, as for arm).
* sysdeps/mips: Move directory from ports/sysdeps/mips.
* sysdeps/unix/mips: Move directory from ports/sysdeps/unix/mips.
* sysdeps/unix/sysv/linux/mips: Move directory from
ports/sysdeps/unix/sysv/linux/mips.
* README: Update listing for mips-*-linux-gnu and
mips64-*-linux-gnu.
* sysdeps/mips: Move directory to ../sysdeps/mips.
* sysdeps/unix/mips: Move directory to ../sysdeps/unix/mips.
* sysdeps/unix/sysv/linux/mips: Move directory to
../sysdeps/unix/sysv/linux/mips.
