glibc/sysdeps/unix/sysv/linux/arm/brk.c

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/* brk system call for Linux/ARM.
Copyright (C) 1995-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
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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.
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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
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
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#include <errno.h>
#include <unistd.h>
#include <sysdep.h>
/* This must be initialized data because commons can't have aliases. */
void *__curbrk = 0;
int
__brk (void *addr)
{
void *newbrk;
* sysdeps/arm/dl-machine.h (CLEAR_CACHE): Use INTERNAL_SYSCALL_ARM. * sysdeps/unix/sysv/linux/arm/brk.c (__brk): Use INLINE_SYSCALL. * sysdeps/unix/sysv/linux/arm/clone.S (__clone): Use DO_CALL. * sysdeps/unix/sysv/linux/arm/eabi/configure.in: Bump arch_minimum_kernel. * sysdeps/unix/sysv/linux/arm/eabi/configure: Regenerated. * sysdeps/unix/sysv/linux/arm/eabi/epoll_ctl.c, sysdeps/unix/sysv/linux/arm/eabi/epoll_wait.c, sysdeps/unix/sysv/linux/arm/eabi/fcntl.c, sysdeps/unix/sysv/linux/arm/eabi/fstatfs64.c, sysdeps/unix/sysv/linux/arm/eabi/ftruncate64.c, sysdeps/unix/sysv/linux/arm/eabi/fxstat64.c, sysdeps/unix/sysv/linux/arm/eabi/kernel_epoll.h, sysdeps/unix/sysv/linux/arm/eabi/kernel_stat.h, sysdeps/unix/sysv/linux/arm/eabi/lockf64.c, sysdeps/unix/sysv/linux/arm/eabi/lxstat64.c, sysdeps/unix/sysv/linux/arm/eabi/semop.c, sysdeps/unix/sysv/linux/arm/eabi/semtimedop.c, sysdeps/unix/sysv/linux/arm/eabi/statfs64.c, sysdeps/unix/sysv/linux/arm/eabi/syscalls.list, sysdeps/unix/sysv/linux/arm/eabi/uname.c, sysdeps/unix/sysv/linux/arm/eabi/xstat64.c, sysdeps/unix/sysv/linux/arm/eabi/xstatconv.c, sysdeps/unix/sysv/linux/arm/eabi/xstatconv.h: Removed. * sysdeps/unix/sysv/linux/arm/eabi/linuxthreads/sysdep-cancel.h, sysdeps/unix/sysv/linux/arm/eabi/mmap64.S, sysdeps/unix/sysv/linux/arm/eabi/pread.c, sysdeps/unix/sysv/linux/arm/eabi/pread64.c, sysdeps/unix/sysv/linux/arm/eabi/pwrite.c, sysdeps/unix/sysv/linux/arm/eabi/pwrite64.c, sysdeps/unix/sysv/linux/arm/eabi/readahead.c, sysdeps/unix/sysv/linux/arm/eabi/sigrestorer.S, sysdeps/unix/sysv/linux/arm/eabi/socket.S, sysdeps/unix/sysv/linux/arm/eabi/syscall.S, sysdeps/unix/sysv/linux/arm/eabi/sysdep.h, sysdeps/unix/sysv/linux/arm/eabi/truncate64.c: New files. * sysdeps/unix/sysv/linux/arm/linuxthreads/sysdep-cancel.h (SINGLE_THREAD_P_INT, SINGLE_THREAD_P_PIC): Removed. (SINGLE_THREAD_P): Rewritten to use only ip. * sysdeps/unix/sysv/linux/arm/linuxthreads/vfork.S (__vfork): Use DO_CALL. * sysdeps/unix/sysv/linux/arm/mmap.S (__mmap): Use DO_CALL. * sysdeps/unix/sysv/linux/arm/mmap64.S (__mmap64): Use DO_CALL. Don't handle EABI here. * sysdeps/unix/sysv/linux/arm/socket.S (__socket): Use SINGLE_THREAD_P. * sysdeps/unix/sysv/linux/arm/vfork.S (__vfork): Use DO_CALL.
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__curbrk = newbrk = (void *) INLINE_SYSCALL (brk, 1, addr);
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if (newbrk < addr)
{
__set_errno (ENOMEM);
return -1;
}
return 0;
}
weak_alias (__brk, brk)