mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 19:30:10 +00:00
eeddfa91cb
This patch add three new macros (SYSCALL_LL, SYSCALL_LL64, and __ASSUME_WORDSIZE64_ILP32) to use along with off_t and off64_t argument syscalls. The rationale for this change is: 1. Remove multiple implementations for the same syscall for different architectures (for instance, pread have 6 different implementations). 2. Also remove the requirement to use syscall wrappers for cancellable entrypoints. The macro usage should be used along __ALIGNMENT_ARG to follow ABI constrains for architecture where it applies. For instance, pread can be rewritten as: return SYSCALL_CANCEL (pread, fd, buf, count, __ALIGNMENT_ARG SYSCALL_LL (offset)); Another macro, SYSCALL_LL64, is provided for off64_t. The macro __ASSUME_WORDSIZE64_ILP32 is used by the ABI to define is uses 64-bit register even if ABI is ILP32 (for instance x32 and mips64-n32). The changes itself are not currently used in any implementation, so no code change is expected. * sysdeps/unix/sysv/linux/generic/sysdep.h (__ALIGNMENT_ARG): Move definition. (__ALIGNMENT_COUNT): Likewise. * sysdeps/unix/sysv/linux/sysdep.h (__ALIGNMENT_ARG): To here. (__ALIGNMENT_COUNT): Likewise. (SYSCALL_LL): New define. (SYSCALL_LL64): Likewise. * sysdeps/unix/sysv/linux/mips/kernel-features.h: [_MIPS_SIM == _ABIO32] (__ASSUME_WORDSIZE64_ILP32): Define. * sysdeps/unix/sysv/linux/x86_64/kernel-features.h: [ILP32] (__ASUME_WORDSIZE64_ILP32): Likewise. |
||
---|---|---|
.. | ||
alpha | ||
arm | ||
bsd | ||
i386 | ||
inet | ||
mips | ||
powerpc | ||
sh | ||
sysv/linux | ||
x86_64 | ||
clock_gettime.c | ||
clock_nanosleep.c | ||
clock_settime.c | ||
confstr.h | ||
get_child_max.c | ||
getlogin_r.c | ||
getlogin.c | ||
getpagesize.c | ||
grantpt.c | ||
ifreq.c | ||
Implies | ||
make-syscalls.sh | ||
Makefile | ||
s-proto-cancel.S | ||
s-proto.S | ||
setxid.h | ||
sockatmark.c | ||
stime.c | ||
syscall-template.S | ||
syscall.S | ||
syscalls.list | ||
sysdep.h |