mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 20:21:07 +00:00
688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
133 lines
5.3 KiB
C
133 lines
5.3 KiB
C
/* Copyright (C) 1991-2018 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdeps/generic/sysdep.h>
|
|
|
|
#include <sys/syscall.h>
|
|
#define HAVE_SYSCALLS
|
|
|
|
/* Note that using a `PASTE' macro loses. */
|
|
#define SYSCALL__(name, args) PSEUDO (__##name, name, args)
|
|
#define SYSCALL(name, args) PSEUDO (name, name, args)
|
|
|
|
#define __SYSCALL_CONCAT_X(a,b) a##b
|
|
#define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X (a, b)
|
|
|
|
|
|
#define __INTERNAL_SYSCALL0(name, err) \
|
|
INTERNAL_SYSCALL (name, err, 0)
|
|
#define __INTERNAL_SYSCALL1(name, err, a1) \
|
|
INTERNAL_SYSCALL (name, err, 1, a1)
|
|
#define __INTERNAL_SYSCALL2(name, err, a1, a2) \
|
|
INTERNAL_SYSCALL (name, err, 2, a1, a2)
|
|
#define __INTERNAL_SYSCALL3(name, err, a1, a2, a3) \
|
|
INTERNAL_SYSCALL (name, err, 3, a1, a2, a3)
|
|
#define __INTERNAL_SYSCALL4(name, err, a1, a2, a3, a4) \
|
|
INTERNAL_SYSCALL (name, err, 4, a1, a2, a3, a4)
|
|
#define __INTERNAL_SYSCALL5(name, err, a1, a2, a3, a4, a5) \
|
|
INTERNAL_SYSCALL (name, err, 5, a1, a2, a3, a4, a5)
|
|
#define __INTERNAL_SYSCALL6(name, err, a1, a2, a3, a4, a5, a6) \
|
|
INTERNAL_SYSCALL (name, err, 6, a1, a2, a3, a4, a5, a6)
|
|
#define __INTERNAL_SYSCALL7(name, err, a1, a2, a3, a4, a5, a6, a7) \
|
|
INTERNAL_SYSCALL (name, err, 7, a1, a2, a3, a4, a5, a6, a7)
|
|
|
|
#define __INTERNAL_SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,o,...) o
|
|
#define __INTERNAL_SYSCALL_NARGS(...) \
|
|
__INTERNAL_SYSCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,)
|
|
#define __INTERNAL_SYSCALL_DISP(b,...) \
|
|
__SYSCALL_CONCAT (b,__INTERNAL_SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
|
|
|
|
/* Issue a syscall defined by syscall number plus any other argument required.
|
|
It is similar to INTERNAL_SYSCALL macro, but without the need to pass the
|
|
expected argument number as second parameter. */
|
|
#define INTERNAL_SYSCALL_CALL(...) \
|
|
__INTERNAL_SYSCALL_DISP (__INTERNAL_SYSCALL, __VA_ARGS__)
|
|
|
|
#define __INLINE_SYSCALL0(name) \
|
|
INLINE_SYSCALL (name, 0)
|
|
#define __INLINE_SYSCALL1(name, a1) \
|
|
INLINE_SYSCALL (name, 1, a1)
|
|
#define __INLINE_SYSCALL2(name, a1, a2) \
|
|
INLINE_SYSCALL (name, 2, a1, a2)
|
|
#define __INLINE_SYSCALL3(name, a1, a2, a3) \
|
|
INLINE_SYSCALL (name, 3, a1, a2, a3)
|
|
#define __INLINE_SYSCALL4(name, a1, a2, a3, a4) \
|
|
INLINE_SYSCALL (name, 4, a1, a2, a3, a4)
|
|
#define __INLINE_SYSCALL5(name, a1, a2, a3, a4, a5) \
|
|
INLINE_SYSCALL (name, 5, a1, a2, a3, a4, a5)
|
|
#define __INLINE_SYSCALL6(name, a1, a2, a3, a4, a5, a6) \
|
|
INLINE_SYSCALL (name, 6, a1, a2, a3, a4, a5, a6)
|
|
#define __INLINE_SYSCALL7(name, a1, a2, a3, a4, a5, a6, a7) \
|
|
INLINE_SYSCALL (name, 7, a1, a2, a3, a4, a5, a6, a7)
|
|
|
|
#define __INLINE_SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
|
|
#define __INLINE_SYSCALL_NARGS(...) \
|
|
__INLINE_SYSCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,)
|
|
#define __INLINE_SYSCALL_DISP(b,...) \
|
|
__SYSCALL_CONCAT (b,__INLINE_SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
|
|
|
|
/* Issue a syscall defined by syscall number plus any other argument
|
|
required. Any error will be handled using arch defined macros and errno
|
|
will be set accordingly.
|
|
It is similar to INLINE_SYSCALL macro, but without the need to pass the
|
|
expected argument number as second parameter. */
|
|
#define INLINE_SYSCALL_CALL(...) \
|
|
__INLINE_SYSCALL_DISP (__INLINE_SYSCALL, __VA_ARGS__)
|
|
|
|
#define SYSCALL_CANCEL(...) \
|
|
({ \
|
|
long int sc_ret; \
|
|
if (SINGLE_THREAD_P) \
|
|
sc_ret = INLINE_SYSCALL_CALL (__VA_ARGS__); \
|
|
else \
|
|
{ \
|
|
int sc_cancel_oldtype = LIBC_CANCEL_ASYNC (); \
|
|
sc_ret = INLINE_SYSCALL_CALL (__VA_ARGS__); \
|
|
LIBC_CANCEL_RESET (sc_cancel_oldtype); \
|
|
} \
|
|
sc_ret; \
|
|
})
|
|
|
|
/* Machine-dependent sysdep.h files are expected to define the macro
|
|
PSEUDO (function_name, syscall_name) to emit assembly code to define the
|
|
C-callable function FUNCTION_NAME to do system call SYSCALL_NAME.
|
|
r0 and r1 are the system call outputs. MOVE(x, y) should be defined as
|
|
an instruction such that "MOVE(r1, r0)" works. ret should be defined
|
|
as the return instruction. */
|
|
|
|
#ifndef SYS_ify
|
|
#define SYS_ify(syscall_name) SYS_##syscall_name
|
|
#endif
|
|
|
|
/* Terminate a system call named SYM. This is used on some platforms
|
|
to generate correct debugging information. */
|
|
#ifndef PSEUDO_END
|
|
#define PSEUDO_END(sym)
|
|
#endif
|
|
#ifndef PSEUDO_END_NOERRNO
|
|
#define PSEUDO_END_NOERRNO(sym) PSEUDO_END(sym)
|
|
#endif
|
|
#ifndef PSEUDO_END_ERRVAL
|
|
#define PSEUDO_END_ERRVAL(sym) PSEUDO_END(sym)
|
|
#endif
|
|
|
|
/* Wrappers around system calls should normally inline the system call code.
|
|
But sometimes it is not possible or implemented and we use this code. */
|
|
#ifndef INLINE_SYSCALL
|
|
#define INLINE_SYSCALL(name, nr, args...) __syscall_##name (args)
|
|
#endif
|