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authorEric Andersen <andersen@codepoet.org>2004-08-26 23:36:04 +0000
committerEric Andersen <andersen@codepoet.org>2004-08-26 23:36:04 +0000
commit11e165ebcdcd1b58f8e6a12cd9b7e39bed159566 (patch)
tree721437daa112e0db89927ea9659038ea136c4e05 /libpthread/linuxthreads/sysdeps/frv/pt-machine.h
parent20e0bbfa54ff160757de3c47c9015e641bc96afd (diff)
Partial patch from Alexandre Oliva:
- adjust licensing terms of sources for crt*.o - change the stat ABI to speed it up, matching changes in the kernel - assorted bug-fixes, improvements and updates in the FR-V port etc.
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/frv/pt-machine.h')
-rw-r--r--libpthread/linuxthreads/sysdeps/frv/pt-machine.h56
1 files changed, 38 insertions, 18 deletions
diff --git a/libpthread/linuxthreads/sysdeps/frv/pt-machine.h b/libpthread/linuxthreads/sysdeps/frv/pt-machine.h
index 067928062..64df5ffdb 100644
--- a/libpthread/linuxthreads/sysdeps/frv/pt-machine.h
+++ b/libpthread/linuxthreads/sysdeps/frv/pt-machine.h
@@ -1,6 +1,6 @@
/* Machine-dependent pthreads configuration and inline functions.
- ARM version.
- Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc.
+ FR-V version.
+ Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Alexandre Oliva <aoliva@redhat.com>
@@ -15,34 +15,54 @@
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. */
+ 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 __ASSEMBLER__
+
#ifndef PT_EI
-# define PT_EI extern inline
+# define PT_EI extern inline __attribute__ ((always_inline))
#endif
-/* 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 __builtin_frame_address (0)
-
-
-extern long int testandset (int *spinlock);
-
/* Spinlock implementation; required. */
PT_EI long int
testandset (int *spinlock)
{
- register long int ret = 1;
+ int i = 1;
+ asm ("swap%I0 %M0, %1" : "+m"(*(volatile int *)spinlock), "+r"(i));
+ return i;
+}
- __asm__ __volatile__("swap%I1\t%M1,%0"
- : "+r"(ret), "+m"(*spinlock));
+/* We want the OS to assign stack addresses. */
+#define FLOATING_STACKS 1
- return ret;
-}
+/* This symbol is defined by the ABI as the stack size requested by
+ the main program. */
+extern char __stacksize;
+#define ARCH_STACK_MAX_SIZE ((unsigned long)&__stacksize)
+
+/* Memory barrier; default is to do nothing */
+#define MEMORY_BARRIER() __asm__ __volatile__("membar" : : : "memory")
+/* Write barrier. */
+#define WRITE_MEMORY_BARRIER() __asm__ __volatile__("membar" : : : "memory")
+
+/* Return the thread descriptor for the current thread. */
+register struct _pthread_descr_struct *THREAD_SELF asm ("gr29");
+#define THREAD_SELF THREAD_SELF
+
+/* Initialize the thread-unique value. */
+#define INIT_THREAD_SELF(descr, nr) \
+ (THREAD_SELF = descr)
+
+/* 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 stack_pointer
+register char * stack_pointer __asm__ ("sp");
+
+#endif
#endif /* pt-machine.h */