diff options
Diffstat (limited to 'libc/sysdeps/mach/i386/machine-sp.h')
-rw-r--r-- | libc/sysdeps/mach/i386/machine-sp.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libc/sysdeps/mach/i386/machine-sp.h b/libc/sysdeps/mach/i386/machine-sp.h new file mode 100644 index 000000000..536f69021 --- /dev/null +++ b/libc/sysdeps/mach/i386/machine-sp.h @@ -0,0 +1,31 @@ +/* Machine-specific function to return the stack pointer. i386 version. + Copyright (C) 1994,97,2001 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _MACHINE_SP_H +#define _MACHINE_SP_H + +/* Return the current stack pointer. */ + +#define __thread_stack_pointer() ({ \ + void *__sp__; \ + __asm__ ("movl %%esp, %0" : "=r" (__sp__)); \ + __sp__; \ +}) + +#endif /* machine-sp.h */ |