1 /* Machine-dependent pthreads configuration and inline functions.
3 Copyright (C) 2004 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by Aurelien Jacquiot <aurelien.jacquiot@jaluna.com>.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public License as
9 published by the Free Software Foundation; either version 2.1 of the
10 License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; see the file COPYING.LIB. If
19 not, see <http://www.gnu.org/licenses/>. */
22 #define _PT_MACHINE_H 1
25 # define PT_EI extern inline
28 extern int __compare_and_swap (long int *p, long int oldval, long int newval);
30 /* Spinlock implementation; required. */
31 static inline long int
32 testandset (int *spinlock)
34 register unsigned int ret = 1;
36 __asm__ __volatile__ ("mvc .s2 CSR, %0\n\tand .s2 -2, %0, %0\n\tmvc .s2 %0, CSR\n"
43 __asm__ __volatile__ ("mvc .s2 CSR, %0\n\tor .s2 1, %0, %0\n\tmvc .s2 %0, CSR\n"
48 #define WRITE_MEMORY_BARRIER()
49 #define READ_MEMORY_BARRIER()
51 /* Get some notion of the current stack. Need not be exactly the top
52 of the stack, just something somewhere in the current frame. */
53 #define CURRENT_STACK_FRAME get_stack_pointer()
54 static inline char * get_stack_pointer(void)
57 __asm__ __volatile__ ("mv .d2 B15, %0" : "=b" (sp));
61 #define THREAD_STACK_OFFSET 8
63 #endif /* pt-machine.h */