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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-07-12 09:21:36 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-07-12 09:21:56 -0700 |
| commit | f531f93056b34800383c5154280e7ba5112563c7 (patch) | |
| tree | 23cd6ebe83824bea3829476456b8c112221666aa /elf/readlib.c | |
| parent | 3bbee82a56b38fc4ee28ecb59721ea1d42494642 (diff) | |
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x86-64: Add p{read,write}[v]64 to syscalls.list [BZ #20348]
64-bit off_t in pread64, preadv, pwrite64 and pwritev syscalls is passed
in one 64-bit register for both x32 and x86-64. Since the inline
asm statement only passes long, which is 32-bit for x32, in registers,
64-bit off_t is truncated to 32-bit on x32. Since __ASSUME_PREADV and
__ASSUME_PWRITEV are defined unconditionally, these syscalls can be
implemented in syscalls.list to pass 64-bit off_t in one 64-bit register.
Tested on x86-64 and x32 with off_t > 4GB on pread64/pwrite64 and
preadv64/pwritev64.
[BZ #20348]
* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Add pread64,
preadv64, pwrite64 and pwritev64.
Diffstat (limited to 'elf/readlib.c')
0 files changed, 0 insertions, 0 deletions