[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / alpha / brk.c

/* Change data segment size.  Linux/Alpha.
   Copyright (C) 2020-2021 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/>.  */

#include <errno.h>
#include <unistd.h>
#include <sysdep.h>

void *__curbrk = 0;

int
__brk (void *addr)
{
  /* Alpha brk returns -ENOMEM in case of failure.  */
  __curbrk = (void *) INTERNAL_SYSCALL_CALL (brk, addr);
  if ((unsigned long) __curbrk == -ENOMEM)
    {
      __set_errno (ENOMEM);
      return -1;
    }

  return 0;
}
weak_alias (__brk, brk)
Commit	Line	Data
72048093	1	/* Change data segment size. Linux/Alpha.
2b778ceb	2	Copyright (C) 2020-2021 Free Software Foundation, Inc.
f69a3b40 UD	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
3214b89b AJ	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
f69a3b40 UD	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3214b89b	13	Lesser General Public License for more details.
f69a3b40	14
3214b89b	15	You should have received a copy of the GNU Lesser General Public
ab84e3ff	16	License along with the GNU C Library. If not, see
5a82c748	17	<https://www.gnu.org/licenses/>. */
f69a3b40 UD	18
	19	#include <errno.h>
	20	#include <unistd.h>
	21	#include <sysdep.h>
	22
f69a3b40 UD	23	void *__curbrk = 0;
	24
	25	int
	26	__brk (void *addr)
	27	{
72048093 AZ	28	/* Alpha brk returns -ENOMEM in case of failure. */
	29	__curbrk = (void *) INTERNAL_SYSCALL_CALL (brk, addr);
	30	if ((unsigned long) __curbrk == -ENOMEM)
f69a3b40 UD	31	{
	32	__set_errno (ENOMEM);
	33	return -1;
	34	}
	35
	36	return 0;
	37	}
	38	weak_alias (__brk, brk)