From f6b07b3d48eb1d28d033b2c342a8a5571dca2e18 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Thu, 12 Jun 2014 10:08:24 -0700 Subject: Move i386 code out of nptl/ subdirectory. --- sysdeps/i386/i686/nptl/Makefile | 31 ++++++++++++++++++++++++ sysdeps/i386/i686/nptl/pthread_spin_trylock.S | 20 +++++++++++++++ sysdeps/i386/i686/nptl/tls.h | 35 +++++++++++++++++++++++++++ 3 files changed, 86 insertions(+) create mode 100644 sysdeps/i386/i686/nptl/Makefile create mode 100644 sysdeps/i386/i686/nptl/pthread_spin_trylock.S create mode 100644 sysdeps/i386/i686/nptl/tls.h (limited to 'sysdeps/i386/i686') diff --git a/sysdeps/i386/i686/nptl/Makefile b/sysdeps/i386/i686/nptl/Makefile new file mode 100644 index 0000000000..8f42463a9b --- /dev/null +++ b/sysdeps/i386/i686/nptl/Makefile @@ -0,0 +1,31 @@ +# Copyright (C) 2003-2014 Free Software Foundation, Inc. +# This file is part of the GNU C Library. +# Contributed by Ulrich Drepper , 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, see +# . + +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/sysdeps/i386/i686/nptl/pthread_spin_trylock.S b/sysdeps/i386/i686/nptl/pthread_spin_trylock.S new file mode 100644 index 0000000000..d02f490986 --- /dev/null +++ b/sysdeps/i386/i686/nptl/pthread_spin_trylock.S @@ -0,0 +1,20 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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, see + . */ + +#define HAVE_CMOV 1 +#include diff --git a/sysdeps/i386/i686/nptl/tls.h b/sysdeps/i386/i686/nptl/tls.h new file mode 100644 index 0000000000..71e769e61c --- /dev/null +++ b/sysdeps/i386/i686/nptl/tls.h @@ -0,0 +1,35 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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, see + . */ + +#ifndef _TLS_H + +/* Additional definitions for 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_next + +#endif /* tls.h */ -- cgit 1.4.1