libpthread/nptl: core of the "Native Posix Threading Library" for uClibc

targetting arm,sh,i386,mips,sparc for now

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

5 files changed, 174 insertions, 0 deletions

diff --git a/libpthread/nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h b/libpthread/nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h
new file mode 100644
index 000000000..5cef8b1cf
--- /dev/null
+++ b/libpthread/nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h
@@ -0,0 +1,31 @@
+/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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.  */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+  _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+  ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
+
+/* We use the normal lobngjmp for unwinding.  */
+#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
diff --git a/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_lock.c b/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_lock.c
new file mode 100644
index 000000000..77171d9b9
--- /dev/null
+++ b/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_lock.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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.  */
+
+#include "pthreadP.h"
+
+int
+pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  __asm __volatile
+    ("1: ldstub  [%0], %%g5\n"
+     "   brnz,pn %%g5, 2f\n"
+     "    membar #StoreLoad | #StoreStore\n"
+     ".subsection 2\n"
+     "2: ldub    [%0], %%g5\n"
+     "   brnz,pt %%g5, 2b\n"
+     "    membar #LoadLoad\n"
+     "   b,a,pt  %%xcc, 1b\n"
+     ".previous"
+     : /* no outputs */
+     : "r" (lock)
+     : "g5", "memory");
+  return 0;
+}
diff --git a/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c b/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c
new file mode 100644
index 000000000..2bda809da
--- /dev/null
+++ b/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_trylock.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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.  */
+
+#include <errno.h>
+#include "pthreadP.h"
+
+int
+pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  int res;
+  __asm __volatile
+    ("ldstub [%1], %0\n"
+     "membar #StoreLoad | #StoreStore"
+     : "=r" (res)
+     : "r" (lock)
+     : "memory");
+  return res == 0 ? 0 : EBUSY;
+}
diff --git a/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_unlock.c b/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_unlock.c
new file mode 100644
index 000000000..7037675a2
--- /dev/null
+++ b/libpthread/nptl/sysdeps/sparc/sparc64/pthread_spin_unlock.c
@@ -0,0 +1,30 @@
+/* pthread_spin_unlock -- unlock a spin lock.  Generic version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
+
+   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.  */
+
+#include "pthreadP.h"
+#include <atomic.h>
+
+int
+pthread_spin_unlock (pthread_spinlock_t *lock)
+{
+  __asm __volatile ("membar #StoreStore | #LoadStore");
+  *lock = 0;
+  return 0;
+}
diff --git a/libpthread/nptl/sysdeps/sparc/sparc64/pthreaddef.h b/libpthread/nptl/sysdeps/sparc/sparc64/pthreaddef.h
new file mode 100644
index 000000000..ec7651211
--- /dev/null
+++ b/libpthread/nptl/sysdeps/sparc/sparc64/pthreaddef.h
@@ -0,0 +1,40 @@
+/* Copyright (C) 2003 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.  */
+
+/* Default stack size.  */
+#define ARCH_STACK_DEFAULT_SIZE	(4 * 1024 * 1024)
+
+/* Required stack pointer alignment at beginning.  */
+#define STACK_ALIGN		16
+
+/* Minimal stack size after allocating thread descriptor and guard size.  */
+#define MINIMAL_REST_STACK	4096
+
+/* Alignment requirement for TCB.  */
+#define TCB_ALIGNMENT		16
+
+
+/* Location of current stack frame.  */
+#define CURRENT_STACK_FRAME  (stack_pointer + (2 * 128))
+register char *stack_pointer __asm__("%sp");
+
+/* XXX Until we have a better place keep the definitions here.  */
+
+/* While there is no such syscall.  */
+#define __exit_thread_inline(val) \
+  INLINE_SYSCALL (exit, 1, (val))