mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/* Copyright (C) 2015-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SYSDEP_LINUX_H
|
|
#define _SYSDEP_LINUX_H
|
|
|
|
#include <bits/wordsize.h>
|
|
#include <kernel-features.h>
|
|
#include <endian.h>
|
|
#include <errno.h>
|
|
|
|
#undef INTERNAL_SYSCALL_ERROR_P
|
|
#define INTERNAL_SYSCALL_ERROR_P(val) \
|
|
((unsigned long int) (val) > -4096UL)
|
|
|
|
#ifndef SYSCALL_ERROR_LABEL
|
|
# define SYSCALL_ERROR_LABEL(sc_err) \
|
|
({ \
|
|
__set_errno (sc_err); \
|
|
-1L; \
|
|
})
|
|
#endif
|
|
|
|
/* Define a macro which expands into the inline wrapper code for a system
|
|
call. It sets the errno and returns -1 on a failure, or the syscall
|
|
return value otherwise. */
|
|
#undef INLINE_SYSCALL
|
|
#define INLINE_SYSCALL(name, nr, args...) \
|
|
({ \
|
|
long int sc_ret = INTERNAL_SYSCALL (name, nr, args); \
|
|
__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (sc_ret)) \
|
|
? SYSCALL_ERROR_LABEL (INTERNAL_SYSCALL_ERRNO (sc_ret)) \
|
|
: sc_ret; \
|
|
})
|
|
|
|
#undef INTERNAL_SYSCALL_ERRNO
|
|
#define INTERNAL_SYSCALL_ERRNO(val) (-(val))
|
|
|
|
/* Set error number and return -1. A target may choose to return the
|
|
internal function, __syscall_error, which sets errno and returns -1.
|
|
We use -1l, instead of -1, so that it can be casted to (void *). */
|
|
#define INLINE_SYSCALL_ERROR_RETURN_VALUE(err) \
|
|
({ \
|
|
__set_errno (err); \
|
|
-1l; \
|
|
})
|
|
|
|
/* Provide a dummy argument that can be used to force register
|
|
alignment for register pairs if required by the syscall ABI. */
|
|
#ifdef __ASSUME_ALIGNED_REGISTER_PAIRS
|
|
#define __ALIGNMENT_ARG 0,
|
|
#define __ALIGNMENT_COUNT(a,b) b
|
|
#else
|
|
#define __ALIGNMENT_ARG
|
|
#define __ALIGNMENT_COUNT(a,b) a
|
|
#endif
|
|
|
|
/* Provide a common macro to pass 64-bit value on syscalls. */
|
|
#if __WORDSIZE == 64 || defined __ASSUME_WORDSIZE64_ILP32
|
|
# define SYSCALL_LL(val) (val)
|
|
# define SYSCALL_LL64(val) (val)
|
|
#else
|
|
#define SYSCALL_LL(val) \
|
|
__LONG_LONG_PAIR ((val) >> 31, (val))
|
|
#define SYSCALL_LL64(val) \
|
|
__LONG_LONG_PAIR ((long) ((val) >> 32), (long) ((val) & 0xffffffff))
|
|
#endif
|
|
|
|
/* Provide a common macro to pass 64-bit value on pread and pwrite
|
|
syscalls. */
|
|
#ifdef __ASSUME_PRW_DUMMY_ARG
|
|
# define SYSCALL_LL_PRW(val) 0, SYSCALL_LL (val)
|
|
# define SYSCALL_LL64_PRW(val) 0, SYSCALL_LL64 (val)
|
|
#else
|
|
# define SYSCALL_LL_PRW(val) __ALIGNMENT_ARG SYSCALL_LL (val)
|
|
# define SYSCALL_LL64_PRW(val) __ALIGNMENT_ARG SYSCALL_LL64 (val)
|
|
#endif
|
|
|
|
/* Provide a macro to pass the off{64}_t argument on p{readv,writev}{64}. */
|
|
#define LO_HI_LONG(val) \
|
|
(long) (val), \
|
|
(long) (((uint64_t) (val)) >> 32)
|
|
|
|
/* Export the ___brk_addr symbol on brk.c implementation (some ABIs export
|
|
it due and old crtstuff.c code). */
|
|
#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 0
|
|
|
|
#endif /* _SYSDEP_LINUX_H */
|