import ia64 linuxthreads files

1 files changed, 136 insertions, 0 deletions

diff --git a/libpthread/linuxthreads.old/sysdeps/ia64/pt-machine.h b/libpthread/linuxthreads.old/sysdeps/ia64/pt-machine.h
new file mode 100644
index 000000000..98cd183f8
--- /dev/null
+++ b/libpthread/linuxthreads.old/sysdeps/ia64/pt-machine.h
@@ -0,0 +1,136 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   IA-64 version.
+   Copyright (C) 1999, 2000, 2002, 2003, 2004 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; 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
+
+#include <ia64intrin.h>
+
+extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
+                     size_t __child_stack_size, int __flags, void *__arg, ...);
+
+#ifndef PT_EI
+# define PT_EI extern inline __attribute__ ((always_inline))
+#endif
+
+extern long int testandset (int *spinlock);
+extern int __compare_and_swap (long int *p, long int oldval, long int newval);
+
+/* Make sure gcc doesn't try to be clever and move things around on
+   us. We need to use _exactly_ the address the user gave us, not some
+   alias that contains the same information.  */
+#define __atomic_fool_gcc(x) (*(volatile struct { int a[100]; } *)x)
+
+#ifndef ELF_MACHINE_NAME
+
+#define NEED_SEPARATE_REGISTER_STACK
+
+/* We want the OS to assign stack addresses.  */
+#define FLOATING_STACKS 1
+
+/* Maximum size of the stack if the rlimit is unlimited.  */
+#define ARCH_STACK_MAX_SIZE     32*1024*1024
+
+/* Get some notion of the current stack.  Need not be exactly the top
+   of the stack, just something somewhere in the current frame.
+   r12 (sp) is the stack pointer. */
+#define CURRENT_STACK_FRAME  stack_pointer
+register char *stack_pointer __asm__ ("sp");
+
+
+/* Register r13 (tp) is reserved by the ABI as "thread pointer". */
+struct _pthread_descr_struct;
+register struct _pthread_descr_struct *__thread_self __asm__("r13");
+
+/* Return the thread descriptor for the current thread.  */
+#define THREAD_SELF  __thread_self
+
+/* Initialize the thread-unique value.  */
+#define INIT_THREAD_SELF(descr, nr)  (__thread_self = (descr))
+
+
+/* Access to data in the thread descriptor is easy.  */
+#define THREAD_GETMEM(descr, member) \
+  ((void) sizeof (descr), THREAD_SELF->member)
+#define THREAD_GETMEM_NC(descr, member) \
+  ((void) sizeof (descr), THREAD_SELF->member)
+#define THREAD_SETMEM(descr, member, value) \
+  ((void) sizeof (descr), THREAD_SELF->member = (value))
+#define THREAD_SETMEM_NC(descr, member, value) \
+  ((void) sizeof (descr), THREAD_SELF->member = (value))
+
+
+/* Memory barrier */
+#define MEMORY_BARRIER() __sync_synchronize ()
+
+
+#define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS
+
+PT_EI int
+__compare_and_swap (long int *p, long int oldval, long int newval)
+{
+  long int readval;
+
+  __asm__ __volatile__
+       ("mov ar.ccv=%4;;\n\t"
+	"cmpxchg8.acq %0=%1,%2,ar.ccv"
+	: "=r" (readval), "=m" (__atomic_fool_gcc (p))
+	: "r"(newval), "m" (__atomic_fool_gcc (p)), "r" (oldval)
+	: "memory");
+  return readval == oldval;
+}
+
+PT_EI int
+__compare_and_swap_with_release_semantics (long int *p,
+					   long int oldval,
+					   long int newval)
+{
+  long int readval;
+
+  __asm__ __volatile__
+       ("mov ar.ccv=%4;;\n\t"
+	"cmpxchg8.rel %0=%1,%2,ar.ccv"
+	: "=r" (readval), "=m" (__atomic_fool_gcc (p))
+	: "r"(newval), "m" (__atomic_fool_gcc (p)), "r" (oldval)
+	: "memory");
+  return readval == oldval;
+}
+
+#endif /* ELF_MACHINE_NAME */
+
+/* Spinlock implementation; required.  */
+PT_EI long int
+testandset (int *spinlock)
+{
+  long int ret;
+
+  __asm__ __volatile__(
+       "xchg4 %0=%1,%2"
+       : "=r"(ret), "=m"(__atomic_fool_gcc (spinlock))
+       : "r"(1), "m"(__atomic_fool_gcc (spinlock))
+       : "memory");
+
+  return ret;
+}
+
+/* Indicate that we are looping.  */
+#define BUSY_WAIT_NOP	__asm__ ("hint @pause")
+
+#endif /* pt-machine.h */