aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/mach/i386/machine-sp.h
blob: 54b2a16c01c796b74dd1db3de042dd7aae2f5dac (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
/* Machine-specific function to return the stack pointer.  i386 version.
   Copyright (C) 1994-2021 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/>.  */

#ifndef _MACHINE_SP_H
#define _MACHINE_SP_H

/* Return the current stack pointer.  */

#define __thread_stack_pointer() ({					      \
  uintptr_t __sp__;							      \
  __asm__ ("movl %%esp, %0" : "=r" (__sp__));				      \
  __sp__;								      \
})

#endif	/* machine-sp.h */