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9f9feb6d5d
The bits/msq.h headers for architectures using the Linux kernel vary in a few ways: * x32 uses __syscall_ulong_t instead of unsigned long int. * x32 has 64-bit time_t, so no padding around time fields despite __WORDSIZE == 32. * Some older 32-bit big-endian architectures have padding before rather than after time fields, although the preferred generic approach is padding after the time fields independent of endianness. (There are also insubstantial differences such as use of unsigned int for padding instead of unsigned long int, which makes no difference to layout since the padding fields using unsigned int are only present on 32-bit architectures.) For the first, __syscall_ulong_t can be used in the generic version as it's the same as unsigned long int everywhere except x32. For the other two differences, this patch adds macros __MSQ_PAD_BEFORE_TIME and __MSQ_PAD_AFTER_TIME in a new bits/msq-pad.h header, so that header is the only one needing to be provided on architectures with differences in this area, and everything else can go in a single common bits/msq.h header. Once we have __TIMESIZE, the generic bits/msq-pad.h can change to use that instead of __WORDSIZE, at which point the x86 version of bits/msq-pad.h won't be needed either. Tested for x86_64 and x86, and with build-many-glibcs.py. * sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add bits/msq-pad.h. * sysdeps/unix/sysv/linux/bits/msq.h: Include <bits/msq-pad.h> instead of <bits/wordsize.h>. (msgqnum_t): Define as __syscall_ulong_t. (msglen_t): Likewise. (__MSQ_PAD_TIME): New macro, depending on [__MSQ_PAD_BEFORE_TIME] and [__MSQ_PAD_AFTER_TIME]. (struct msqid_ds): Define time fields using __MSQ_PAD_TIME. Use __syscall_ulong_t instead of unsigned long int. * sysdeps/unix/sysv/linux/bits/msq-pad.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/msq-pad.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/msq-pad.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/msq-pad.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/msq-pad.h: Likewise. * sysdeps/unix/sysv/linux/x86/bits/msq-pad.h: Likewise. * sysdeps/unix/sysv/linux/hppa/bits/msq.h: Remove. * sysdeps/unix/sysv/linux/mips/bits/msq.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/msq.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/msq.h: Likewise. * sysdeps/unix/sysv/linux/x86/bits/msq.h: Likewise. |
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| .. | ||
| environments.h | ||
| fcntl.h | ||
| ioctl-types.h | ||
| ipc.h | ||
| local_lim.h | ||
| mman.h | ||
| msq-pad.h | ||
| ppc.h | ||
| procfs.h | ||
| sem.h | ||
| semaphore.h | ||
| shm.h | ||
| sigstack.h | ||
| stat.h | ||
| termios.h | ||
| wordsize.h | ||