Merge in the pthread library. This is the linuxthreads library taken from

glibc 2.1.3 and ported to work with uClibc by Stefan Soucek and Erik Andersen
(me).  Stefan has hacked things up such that linuxthreads runs on MMU-less
systems (tested only on arm-nommu).  Erik cleaned things up and made it work
properly as a shared library.
 -Erik

4 files changed, 204 insertions, 0 deletions

diff --git a/libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h b/libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h
new file mode 100644
index 000000000..69af8579a
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h
@@ -0,0 +1,66 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   sparc version.
+   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson <rth@tamu.edu>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library 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_EI
+# define PT_EI extern inline
+#endif
+
+/* Spinlock implementation; required.  */
+PT_EI int
+testandset (int *spinlock)
+{
+  int ret;
+
+  __asm__ __volatile__("ldstub %1,%0"
+	: "=r"(ret), "=m"(*spinlock)
+	: "m"(*spinlock));
+
+  return ret;
+}
+
+
+/* Spinlock release; default is just set to zero.  */
+#define RELEASE(spinlock) \
+  __asm__ __volatile__("stbar; stb %1,%0" : "=m"(*(spinlock)) : "r"(0));
+
+
+/* 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");
+
+
+/* Registers %g6 and %g7 are reserved by the ABI for "system use".  It
+   happens that Solaris uses %g6 for the thread pointer -- we do the same.  */
+struct _pthread_descr_struct;
+register struct _pthread_descr_struct *__thread_self __asm__("%g6");
+
+/* 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) __thread_self->member
+#define THREAD_GETMEM_NC(descr, member) __thread_self->member
+#define THREAD_SETMEM(descr, member, value) __thread_self->member = (value)
+#define THREAD_SETMEM_NC(descr, member, value) __thread_self->member = (value)
diff --git a/libpthread/linuxthreads/sysdeps/sparc/sparc32/sigcontextinfo.h b/libpthread/linuxthreads/sysdeps/sparc/sparc32/sigcontextinfo.h
new file mode 100644
index 000000000..2c2770d07
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/sparc/sparc32/sigcontextinfo.h
@@ -0,0 +1,29 @@
+/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 1999.
+
+   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.  */
+
+#define SIGCONTEXT struct sigcontext *
+#define SIGCONTEXT_EXTRA_ARGS
+#define GET_PC(__ctx)	((void *) ((__ctx)->si_regs.pc))
+#define ADVANCE_STACK_FRAME(__next) \
+	((void *) (((unsigned *)(__next))+14))
+
+#define GET_STACK(__ctx)	((void *) (__ctx)->si_regs.u_regs[14])
+#define GET_FRAME(__ctx)	ADVANCE_STACK_FRAME (GET_STACK(__ctx))
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+  (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
diff --git a/libpthread/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h b/libpthread/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h
new file mode 100644
index 000000000..5560003fc
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h
@@ -0,0 +1,77 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   Sparc v9 version.
+   Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson <rth@tamu.edu>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library 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_EI
+# define PT_EI extern inline
+#endif
+
+
+/* Spinlock implementation; required.  */
+PT_EI int
+testandset (int *spinlock)
+{
+  int ret;
+
+  __asm__ __volatile__("ldstub %1,%0"
+	: "=r"(ret), "=m"(*spinlock) : "m"(*spinlock));
+
+  return ret;
+}
+
+
+/* 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");
+
+
+/* Registers %g6 and %g7 are reserved by the ABI for "system use".  It
+   happens that Solaris uses %g6 for the thread pointer -- we do the same.  */
+struct _pthread_descr_struct;
+register struct _pthread_descr_struct *__thread_self __asm__("%g6");
+
+/* 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))
+
+
+/* Compare-and-swap for semaphores. */
+
+#define HAS_COMPARE_AND_SWAP
+PT_EI int
+__compare_and_swap (long int *p, long int oldval, long int newval)
+{
+  long int readval;
+
+  __asm__ __volatile__ ("casx	[%4], %2, %0"
+			: "=r"(readval), "=m"(*p)
+			: "r"(oldval), "m"(*p), "r"(p), "0"(newval));
+
+  return readval == oldval;
+}
+
+/* Access to data in the thread descriptor is easy.  */
+#define THREAD_GETMEM(descr, member) __thread_self->member
+#define THREAD_GETMEM_NC(descr, member) __thread_self->member
+#define THREAD_SETMEM(descr, member, value) __thread_self->member = (value)
+#define THREAD_SETMEM_NC(descr, member, value) __thread_self->member = (value)
diff --git a/libpthread/linuxthreads/sysdeps/sparc/sparc64/sigcontextinfo.h b/libpthread/linuxthreads/sysdeps/sparc/sparc64/sigcontextinfo.h
new file mode 100644
index 000000000..47e0d27f8
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/sparc/sparc64/sigcontextinfo.h
@@ -0,0 +1,32 @@
+/* Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jj@ultra.linux.cz>, 1999.
+
+   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.  */
+
+#ifndef STACK_BIAS
+#define STACK_BIAS 2047
+#endif
+#define SIGCONTEXT struct sigcontext *
+#define SIGCONTEXT_EXTRA_ARGS
+#define GET_PC(__ctx)	((void *) ((__ctx)->sigc_regs.tpc))
+#define ADVANCE_STACK_FRAME(__next) \
+	((void *) (((unsigned long *) (((unsigned long int) (__next))     \
+					   + STACK_BIAS))+14))
+#define GET_STACK(__ctx)	((void *) ((__ctx)->sigc_regs.u_regs[14]))
+#define GET_FRAME(__ctx)	ADVANCE_STACK_FRAME (GET_STACK (__ctx))
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+  (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))