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author | Ulrich Drepper <drepper@redhat.com> | 2003-01-07 00:42:43 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2003-01-07 00:42:43 +0000 |
commit | 52f3d213311e34285c4809f043a5cf3a5876b897 (patch) | |
tree | b785902a0af0ab92aabf9e3f155ca1728a607fac /sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c | |
parent | a841816e175f7f7faeb5a019578b6b536ea336b6 (diff) | |
download | glibc-52f3d213311e34285c4809f043a5cf3a5876b897.tar.gz glibc-52f3d213311e34285c4809f043a5cf3a5876b897.tar.xz glibc-52f3d213311e34285c4809f043a5cf3a5876b897.zip |
Update.
2003-01-06 Franz Sirl <Franz.Sirl-kernel@lauterbach.com> * sysdeps/powerpc/powerpc32/sysdep.h (PSEUDO_RET): Add branch hint. * sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S: Add cancellation support. * sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: Remove ftruncate64, truncate64, pread64 and pwrite64 entries. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h (INLINE_SYSCALL): Add __builtin_expect. (LOADARGS_n): Add argument size safety checks. * sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: New file. 2003-01-06 Jakub Jelinek <jakub@redhat.com> * sysdeps/generic/sysdep-cancel.h (LIBC_CANCEL_HANDLED): Define. * sysdeps/generic/creat.c: Include sysdep-cancel.h. (LIBC_CANCEL_HANDLED): Add. * sysdeps/unix/sysv/linux/alpha/sysdep.h (inline_syscall_r0_constraint): Rename to... (inline_syscall_r0_out_constraint): ... this. Add =. (inline_syscall[0-6]): Use inline_syscall_r0_out_constraint.
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c new file mode 100644 index 0000000000..d4fe1eea2d --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c @@ -0,0 +1,88 @@ +/* Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003 + Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <unistd.h> + +#include <sysdep-cancel.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +#include "kernel-features.h" + +#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0 + +# if __ASSUME_PREAD_SYSCALL == 0 +static ssize_t __emulate_pread64 (int fd, void *buf, size_t count, + off64_t offset) internal_function; +# endif + + +ssize_t +__libc_pread64 (fd, buf, count, offset) + int fd; + void *buf; + size_t count; + off64_t offset; +{ + ssize_t result; + + if (SINGLE_THREAD_P) + { + /* On PPC32 64bit values are aligned in odd/even register pairs. */ + result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, + 0, (long) (offset >> 32), + (long) offset); +# if __ASSUME_PREAD_SYSCALL == 0 + if (result == -1 && errno == ENOSYS) + /* No system call available. Use the emulation. */ + result = __emulate_pread64 (fd, buf, count, offset); +# endif + + return result; + } + + int oldtype = LIBC_CANCEL_ASYNC (); + + /* On PPC32 64bit values are aligned in odd/even register pairs. */ + result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, + 0, (long) (offset >> 32), + (long) offset); +# if __ASSUME_PREAD_SYSCALL == 0 + if (result == -1 && errno == ENOSYS) + /* No system call available. Use the emulation. */ + result = __emulate_pread64 (fd, buf, count, offset); +# endif + + LIBC_CANCEL_RESET (oldtype); + + return result; +} + +weak_alias (__libc_pread64, __pread64) +weak_alias (__libc_pread64, pread64) + +# define __libc_pread64(fd, buf, count, offset) \ + static internal_function __emulate_pread64 (fd, buf, count, offset) +#endif + +# if __ASSUME_PREAD_SYSCALL == 0 +# include <sysdeps/posix/pread64.c> +#endif |