Remove compatibility code for old ARM kernels.
This commit is contained in:
Joseph Myers
parent
18bbce4028
commit
21ed706977
|
|
@ -1,3 +1,31 @@
|
|||
2012-05-19 Joseph Myers <joseph@codesourcery.com>
|
||||
|
||||
* sysdeps/unix/sysv/linux/arm/ftruncate64.c (kernel-features.h):
|
||||
Don't include.
|
||||
[__NR_ftruncate64]: Make code unconditional.
|
||||
[!__NR_ftruncate64]: Remove conditional code.
|
||||
[!__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
|
||||
* sysdeps/unix/sysv/linux/arm/mmap.S (kernel-features.h): Don't
|
||||
include.
|
||||
[__ASSUME_MMAP2_SYSCALL]:
|
||||
Make code unconditional.
|
||||
[!__ASSUME_MMAP2_SYSCALL]: Remove conditional code.
|
||||
* sysdeps/unix/sysv/linux/arm/posix_fadvise64.c
|
||||
(kernel-features.h): Don't include.
|
||||
[__NR_arm_fadvise64_64]: Make code unconditional.
|
||||
[!__ASSUME_FADVISE64_64_SYSCALL]: Remove conditional code.
|
||||
* sysdeps/unix/sysv/linux/arm/truncate64.c (kernel-features.h):
|
||||
Don't include.
|
||||
[__NR_truncate64]: Make code unconditional.
|
||||
[!__NR_truncate64]: Remove conditional code.
|
||||
[!__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
|
||||
* sysdeps/unix/sysv/linux/arm/vfork.S (kernel-features.h): Don't
|
||||
include.
|
||||
[__NR_vfork]: Make code unconditional.
|
||||
[__ASSUME_VFORK_SYSCALL]: Likewise.
|
||||
[!__ASSUME_VFORK_SYSCALL]: Remove conditional code.
|
||||
[!__NR_vfork]: Likewise.
|
||||
|
||||
2012-05-16 Joseph Myers <joseph@codesourcery.com>
|
||||
|
||||
* sysdeps/unix/sysv/linux/arm/kernel-features.h
|
||||
|
|
|
|||
|
|
@ -1,5 +1,4 @@
|
|||
/* Copyright (C) 1997,1998,1999,2000,2001,2003, 2005
|
||||
Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1997-2012 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
|
||||
|
|
@ -24,53 +23,14 @@
|
|||
#include <sysdep.h>
|
||||
#include <sys/syscall.h>
|
||||
|
||||
#include "kernel-features.h"
|
||||
|
||||
#ifdef __NR_ftruncate64
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
/* The variable is shared between all wrappers around *truncate64 calls. */
|
||||
extern int __have_no_truncate64;
|
||||
#endif
|
||||
|
||||
|
||||
/* Truncate the file FD refers to to LENGTH bytes. */
|
||||
int
|
||||
__ftruncate64 (int fd, off64_t length)
|
||||
{
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if (! __have_no_truncate64)
|
||||
#endif
|
||||
{
|
||||
unsigned int low = length & 0xffffffff;
|
||||
unsigned int high = length >> 32;
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
int saved_errno = errno;
|
||||
#endif
|
||||
int result = INLINE_SYSCALL (ftruncate64, 4, fd, 0,
|
||||
__LONG_LONG_PAIR (high, low));
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if (result != -1 || errno != ENOSYS)
|
||||
#endif
|
||||
return result;
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
__set_errno (saved_errno);
|
||||
__have_no_truncate64 = 1;
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if ((off_t) length != length)
|
||||
{
|
||||
__set_errno (EINVAL);
|
||||
return -1;
|
||||
}
|
||||
return __ftruncate (fd, (off_t) length);
|
||||
#endif
|
||||
unsigned int low = length & 0xffffffff;
|
||||
unsigned int high = length >> 32;
|
||||
int result = INLINE_SYSCALL (ftruncate64, 4, fd, 0,
|
||||
__LONG_LONG_PAIR (high, low));
|
||||
return result;
|
||||
}
|
||||
weak_alias (__ftruncate64, ftruncate64)
|
||||
|
||||
#else
|
||||
/* Use the generic implementation. */
|
||||
# include <misc/ftruncate64.c>
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 1998, 2000, 2003, 2005, 2009 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1998-2012 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
|
||||
|
|
@ -16,20 +16,12 @@
|
|||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
#define EINVAL 22
|
||||
|
||||
.text
|
||||
|
||||
ENTRY (__mmap)
|
||||
# ifdef __ASSUME_MMAP2_SYSCALL
|
||||
/* This code is actually a couple of cycles slower than the
|
||||
sys_mmap version below, so it might seem like a loss. But the
|
||||
code path inside the kernel is sufficiently much shorter to
|
||||
make it a net gain to use mmap2 when it's known to be
|
||||
available. */
|
||||
|
||||
/* shuffle args */
|
||||
str r5, [sp, #-4]!
|
||||
cfi_adjust_cfa_offset (4)
|
||||
|
|
@ -66,38 +58,6 @@ ENTRY (__mmap)
|
|||
.Linval:
|
||||
mov r0, #-EINVAL
|
||||
b 2b
|
||||
# else
|
||||
/* Because we can only get five args through the syscall interface, and
|
||||
mmap() takes six, we need to build a parameter block and pass its
|
||||
address instead. The 386 port does a similar trick. */
|
||||
|
||||
/* This code previously moved sp into ip and stored the args using
|
||||
stmdb ip!, {a1-a4}. It did not modify sp, so the stack never had
|
||||
to be restored after the syscall completed. It saved an
|
||||
instruction and meant no stack cleanup work was required.
|
||||
|
||||
This will not work in the case of a mmap call being interrupted
|
||||
by a signal. If the signal handler uses any stack the arguments
|
||||
to mmap will be trashed. The results of a restart of mmap are
|
||||
then unpredictable. */
|
||||
|
||||
/* store args on the stack */
|
||||
stmdb sp!, {a1-a4}
|
||||
cfi_adjust_cfa_offset (16)
|
||||
|
||||
/* do the syscall */
|
||||
mov a1, sp
|
||||
DO_CALL (mmap, 0)
|
||||
|
||||
/* pop args off the stack. */
|
||||
add sp, sp, #16
|
||||
cfi_adjust_cfa_offset (-16)
|
||||
|
||||
cmn r0, $4096
|
||||
RETINSTR(cc, lr)
|
||||
b PLTJMP(syscall_error);
|
||||
#endif
|
||||
|
||||
PSEUDO_END (__mmap)
|
||||
|
||||
weak_alias (__mmap, mmap)
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2003-2012 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
|
||||
|
|
@ -18,7 +18,6 @@
|
|||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
#include <sysdep.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise);
|
||||
int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise);
|
||||
|
|
@ -29,34 +28,13 @@ int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise);
|
|||
int
|
||||
__posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise)
|
||||
{
|
||||
#ifdef __NR_arm_fadvise64_64
|
||||
INTERNAL_SYSCALL_DECL (err);
|
||||
int ret = INTERNAL_SYSCALL (arm_fadvise64_64, err, 6, fd, advise,
|
||||
__LONG_LONG_PAIR ((long)(offset >> 32), (long)offset),
|
||||
__LONG_LONG_PAIR ((long)(len >> 32), (long)len));
|
||||
if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
|
||||
return 0;
|
||||
# ifndef __ASSUME_FADVISE64_64_SYSCALL
|
||||
if (INTERNAL_SYSCALL_ERRNO (ret, err) != ENOSYS)
|
||||
# endif
|
||||
return INTERNAL_SYSCALL_ERRNO (ret, err);
|
||||
#endif
|
||||
#ifndef __ASSUME_FADVISE64_64_SYSCALL
|
||||
# ifdef __NR_fadvise64
|
||||
if (len != (off_t) len)
|
||||
return EOVERFLOW;
|
||||
|
||||
INTERNAL_SYSCALL_DECL (err2);
|
||||
int ret2 = INTERNAL_SYSCALL (fadvise64, err2, 6, fd, 0,
|
||||
__LONG_LONG_PAIR ((long)(offset >> 32), (long)offset),
|
||||
(off_t) len, advise);
|
||||
if (!INTERNAL_SYSCALL_ERROR_P (ret2, err2))
|
||||
return 0;
|
||||
return INTERNAL_SYSCALL_ERRNO (ret2, err2);
|
||||
# else
|
||||
return ENOSYS;
|
||||
# endif
|
||||
#endif
|
||||
return INTERNAL_SYSCALL_ERRNO (ret, err);
|
||||
}
|
||||
|
||||
#include <shlib-compat.h>
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* Copyright (C) 1997-2000, 2003, 2004, 2005 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1997-2012 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
|
||||
|
|
@ -24,51 +24,13 @@
|
|||
#include <sys/syscall.h>
|
||||
#include <bp-checks.h>
|
||||
|
||||
#include "kernel-features.h"
|
||||
|
||||
#ifdef __NR_truncate64
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
/* The variable is shared between all wrappers around *truncate64 calls. */
|
||||
int __have_no_truncate64;
|
||||
#endif
|
||||
|
||||
/* Truncate the file FD refers to to LENGTH bytes. */
|
||||
int
|
||||
truncate64 (const char *path, off64_t length)
|
||||
{
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if (! __have_no_truncate64)
|
||||
#endif
|
||||
{
|
||||
unsigned int low = length & 0xffffffff;
|
||||
unsigned int high = length >> 32;
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
int saved_errno = errno;
|
||||
#endif
|
||||
int result = INLINE_SYSCALL (truncate64, 4, CHECK_STRING (path), 0,
|
||||
__LONG_LONG_PAIR (high, low));
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if (result != -1 || errno != ENOSYS)
|
||||
#endif
|
||||
return result;
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
__set_errno (saved_errno);
|
||||
__have_no_truncate64 = 1;
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if ((off_t) length != length)
|
||||
{
|
||||
__set_errno (EINVAL);
|
||||
return -1;
|
||||
}
|
||||
return __truncate (path, (off_t) length);
|
||||
#endif
|
||||
unsigned int low = length & 0xffffffff;
|
||||
unsigned int high = length >> 32;
|
||||
int result = INLINE_SYSCALL (truncate64, 4, CHECK_STRING (path), 0,
|
||||
__LONG_LONG_PAIR (high, low));
|
||||
return result;
|
||||
}
|
||||
|
||||
#else
|
||||
/* Use the generic implementation. */
|
||||
# include <misc/truncate64.c>
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -19,7 +19,6 @@
|
|||
#include <sysdep.h>
|
||||
#define _ERRNO_H 1
|
||||
#include <bits/errno.h>
|
||||
#include <kernel-features.h>
|
||||
|
||||
/* Clone the calling process, but without copying the whole address space.
|
||||
The calling process is suspended until the new process exits or is
|
||||
|
|
@ -27,8 +26,6 @@
|
|||
and the process ID of the new process to the old process. */
|
||||
|
||||
ENTRY (__vfork)
|
||||
|
||||
#ifdef __NR_vfork
|
||||
#ifdef SAVE_PID
|
||||
SAVE_PID
|
||||
#endif
|
||||
|
|
@ -56,25 +53,7 @@ ENTRY (__vfork)
|
|||
cmn a1, #4096
|
||||
RETINSTR(cc, lr)
|
||||
|
||||
# ifdef __ASSUME_VFORK_SYSCALL
|
||||
b PLTJMP(SYSCALL_ERROR)
|
||||
# else
|
||||
/* Check if vfork syscall is known at all. */
|
||||
cmn a1, #ENOSYS
|
||||
bne PLTJMP(SYSCALL_ERROR)
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifndef __ASSUME_VFORK_SYSCALL
|
||||
/* If we don't have vfork, fork is close enough. */
|
||||
DO_CALL (fork, 0)
|
||||
cmn a1, #4096
|
||||
RETINSTR(cc, lr)
|
||||
b PLTJMP(SYSCALL_ERROR)
|
||||
#elif !defined __NR_vfork
|
||||
# error "__NR_vfork not available and __ASSUME_VFORK_SYSCALL defined"
|
||||
#endif
|
||||
|
||||
PSEUDO_END (__vfork)
|
||||
libc_hidden_def (__vfork)
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue