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authorAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
commitc68d0fa2d88fc2134a38d99e7e944828384a7671 (patch)
tree6596943bd1c77f18d6e49d4153ddd3f3d67b49f5 /libpthread/nptl/sysdeps/i386/i686
parent9a03e98a3b418f33c347a6023e9320f3a42cb9e4 (diff)
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>
Diffstat (limited to 'libpthread/nptl/sysdeps/i386/i686')
-rw-r--r--libpthread/nptl/sysdeps/i386/i686/Makefile32
-rw-r--r--libpthread/nptl/sysdeps/i386/i686/pthread_spin_trylock.S21
-rw-r--r--libpthread/nptl/sysdeps/i386/i686/tls.h36
3 files changed, 89 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/i386/i686/Makefile b/libpthread/nptl/sysdeps/i386/i686/Makefile
new file mode 100644
index 000000000..137c0a2f0
--- /dev/null
+++ b/libpthread/nptl/sysdeps/i386/i686/Makefile
@@ -0,0 +1,32 @@
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+# Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+# 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.
+
+ifeq ($(subdir),nptl)
+# It turns out that stack coloring is in general not good on P4s. Some
+# applications will benefit. We will probably have a configuration option
+# at some point. Enabling coloring can be done with
+#
+# -DCOLORING_INCREMENT=128
+#
+# What is useful is to avoid the 64k aliasing problem which reliably
+# happens if all stacks use sizes which are a multiple of 64k. Tell
+# the stack allocator to disturb this by allocation one more page if
+# necessary.
+CFLAGS-pthread_create.c += -DMULTI_PAGE_ALIASING=65536
+endif
diff --git a/libpthread/nptl/sysdeps/i386/i686/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/i386/i686/pthread_spin_trylock.S
new file mode 100644
index 000000000..a5d861f92
--- /dev/null
+++ b/libpthread/nptl/sysdeps/i386/i686/pthread_spin_trylock.S
@@ -0,0 +1,21 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ 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 HAVE_CMOV 1
+#include "../i486/pthread_spin_trylock.S"
diff --git a/libpthread/nptl/sysdeps/i386/i686/tls.h b/libpthread/nptl/sysdeps/i386/i686/tls.h
new file mode 100644
index 000000000..4025ed8d2
--- /dev/null
+++ b/libpthread/nptl/sysdeps/i386/i686/tls.h
@@ -0,0 +1,36 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ 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 _TLS_H
+
+/* Additional definitions for <tls.h> on i686 and up. */
+
+
+/* Macros to load from and store into segment registers. We can use
+ the 32-bit instructions. */
+#define TLS_GET_GS() \
+ ({ int __seg; __asm ("movl %%gs, %0" : "=q" (__seg)); __seg; })
+#define TLS_SET_GS(val) \
+ __asm ("movl %0, %%gs" :: "q" (val))
+
+
+/* Get the full set of definitions. */
+#include "../tls.h"
+
+#endif /* tls.h */