From 46d6a24872b7fa2717f8f71b5e0598a14d38e1f6 Mon Sep 17 00:00:00 2001 From: Aurelien Jacquiot Date: Wed, 23 Feb 2011 13:04:59 +0100 Subject: The C6X port This adds support for the TI C6X family of processors. Signed-off-by: Mark Salter Signed-off-by: Aurelien Jacquiot Signed-off-by: Bernd Schmidt --- .../linuxthreads.old/sysdeps/c6x/pt-machine.h | 64 ++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 libpthread/linuxthreads.old/sysdeps/c6x/pt-machine.h (limited to 'libpthread/linuxthreads.old/sysdeps/c6x') diff --git a/libpthread/linuxthreads.old/sysdeps/c6x/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/c6x/pt-machine.h new file mode 100644 index 000000000..cabd4e33c --- /dev/null +++ b/libpthread/linuxthreads.old/sysdeps/c6x/pt-machine.h @@ -0,0 +1,64 @@ +/* Machine-dependent pthreads configuration and inline functions. + C6x version. + Copyright (C) 2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Aurelien Jacquiot . + + 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; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _PT_MACHINE_H +#define _PT_MACHINE_H 1 + +#ifndef PT_EI +# define PT_EI extern inline +#endif + +extern int __compare_and_swap (long int *p, long int oldval, long int newval); + +/* Spinlock implementation; required. */ +static inline long int +testandset (int *spinlock) +{ + register unsigned int ret = 1; + int dummy; + __asm__ __volatile__ ("mvc .s2 CSR, %0\n\tand .s2 -2, %0, %0\n\tmvc .s2 %0, CSR\n" + : "=b" (dummy)); + + if (*spinlock == 0) { + *spinlock = 1; + ret = 0; + } + __asm__ __volatile__ ("mvc .s2 CSR, %0\n\tor .s2 1, %0, %0\n\tmvc .s2 %0, CSR\n" + : "=b" (dummy)); + return ret; +} + +#define WRITE_MEMORY_BARRIER() +#define READ_MEMORY_BARRIER() + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME get_stack_pointer() +static inline char * get_stack_pointer(void) +{ + char *sp; + __asm__ __volatile__ ("mv .d2 B15, %0" : "=b" (sp)); + return sp; +} + +#define THREAD_STACK_OFFSET 8 + +#endif /* pt-machine.h */ -- cgit v1.2.3