mirror of git://sourceware.org/git/glibc.git
96b7fe4243
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.
|
||
|---|---|---|
| .. | ||
| bits | ||
| sys | ||
| Implies | ||
| Makefile | ||
| Versions | ||
| ____longjmp_chk.S | ||
| aeabi_read_tp.S | ||
| alphasort64.c | ||
| arch-fork.h | ||
| arm-features.h | ||
| atomic-machine.h | ||
| brk.c | ||
| c++-types.data | ||
| clone.S | ||
| dl-cache.h | ||
| dl-machine.h | ||
| dl-procinfo.c | ||
| dl-procinfo.h | ||
| fcntl.c | ||
| ftruncate64.c | ||
| fxstat.c | ||
| fxstatat.c | ||
| getcontext.S | ||
| getdents64.c | ||
| getrlimit64.c | ||
| glob64.c | ||
| init-first.c | ||
| ioperm.c | ||
| kernel-features.h | ||
| ld.abilist | ||
| ldconfig.h | ||
| ldsodefs.h | ||
| libBrokenLocale.abilist | ||
| libanl.abilist | ||
| libc-do-syscall.S | ||
| libc-vdso.h | ||
| libc.abilist | ||
| libcrypt.abilist | ||
| libdl.abilist | ||
| libm.abilist | ||
| libnsl.abilist | ||
| libpthread.abilist | ||
| libresolv.abilist | ||
| librt.abilist | ||
| libthread_db.abilist | ||
| libutil.abilist | ||
| localplt.data | ||
| lockf64.c | ||
| lxstat.c | ||
| makecontext.c | ||
| mmap.c | ||
| msgctl.c | ||
| oldgetrlimit.c | ||
| oldgetrlimit64.c | ||
| oldsetrlimit.c | ||
| posix_fadvise.c | ||
| profil-counter.h | ||
| readahead.c | ||
| readdir64.c | ||
| readdir64_r.c | ||
| readelflib.c | ||
| register-dump.h | ||
| scandir64.c | ||
| semctl.c | ||
| setcontext.S | ||
| setegid.c | ||
| seteuid.c | ||
| setgid.c | ||
| setgroups.c | ||
| setregid.c | ||
| setresgid.c | ||
| setresuid.c | ||
| setreuid.c | ||
| setuid.c | ||
| shlib-versions | ||
| shmctl.c | ||
| sigaction.c | ||
| sigcontextinfo.h | ||
| sigrestorer.S | ||
| swapcontext.S | ||
| syscall.S | ||
| syscalls.list | ||
| sysdep-cancel.h | ||
| sysdep.S | ||
| sysdep.h | ||
| tls.h | ||
| truncate64.c | ||
| ucontext_i.sym | ||
| umount.c | ||
| versionsort64.c | ||
| vfork.S | ||
| xstat.c | ||