[PATCH 1/7] OpenMP 4.0 offloading infrastructure: configure and make
* configure: Regenerate.
* configure.ac (--enable-as-accelerator-for)
(--enable-offload-targets): New configure options.
gcc/
* Makefile.in (real_target_noncanonical, accel_dir_suffix)
(enable_as_accelerator): New variables substituted by configure.
(libsubdir, libexecsubdir, unlibsubdir): Tweak for the possibility of
being configured as an offload compiler.
(DRIVER_DEFINES): Pass new defines DEFAULT_REAL_TARGET_MACHINE and
ACCEL_DIR_SUFFIX.
(install-cpp, install-common, install_driver, install-gcc-ar): Do not
install for the offload compiler.
* config.in: Regenerate.
* configure: Regenerate.
* configure.ac (real_target_noncanonical, accel_dir_suffix)
(enable_as_accelerator): Compute new variables.
(ACCEL_COMPILER): Define if the compiler is built as the accel compiler.
(OFFLOAD_TARGETS): List of target names suitable for offloading.
(ENABLE_OFFLOADING): Define if list of offload targets is not empty.
gcc/cp/
* Make-lang.in (c++.install-common): Do not install for the offload
compiler.
gcc/doc/
* install.texi (Options specification): Document
--enable-as-accelerator-for and --enable-offload-targets.
gcc/fortran/
* Make-lang.in (fortran.install-common): Do not install for the offload
compiler.
libgcc/
* Makefile.in (crtoffloadbegin$(objext)): New rule.
(crtoffloadend$(objext)): Likewise.
* configure: Regenerate.
* configure.ac (accel_dir_suffix): Compute new variable.
(extra_parts): Add crtoffloadbegin.o and crtoffloadend.o
if enable_offload_targets is not empty.
* offloadstuff.c: New file.
libgomp/
* config.h.in: Regenerate.
* configure: Regenerate.
* configure.ac: Check for libdl, required for plugin support.
(PLUGIN_SUPPORT): Define if plugins are supported.
(enable_offload_targets): Support Intel MIC targets.
(OFFLOAD_TARGETS): List of target names suitable for offloading.
lto-plugin/
* Makefile.am (libexecsubdir): Tweak for the possibility of being
configured for offload compiler.
(accel_dir_suffix, real_target_noncanonical): New variables substituted
by configure.
* Makefile.in: Regenerate.
* configure: Regenerate.
* configure.ac (accel_dir_suffix, real_target_noncanonical): Compute new
variables.
Co-Authored-By: Andrey Turetskiy <andrey.turetskiy@intel.com>
Co-Authored-By: Ilya Verbin <ilya.verbin@intel.com>
Co-Authored-By: Thomas Schwinge <thomas@codesourcery.com>
From-SVN: r217485
diff --git a/libgcc/offloadstuff.c b/libgcc/offloadstuff.c
new file mode 100644
index 0000000..273189d
--- /dev/null
+++ b/libgcc/offloadstuff.c
@@ -0,0 +1,80 @@
+/* Specialized bits of code needed for the offloading tables.
+ Copyright (C) 2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC 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 General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+/* Target machine header files require this define. */
+#define IN_LIBGCC2
+
+/* FIXME: Including auto-host is incorrect, but until we have
+ identified the set of defines that need to go into auto-target.h,
+ this will have to do. */
+#include "auto-host.h"
+#undef caddr_t
+#undef pid_t
+#undef rlim_t
+#undef ssize_t
+#undef vfork
+#include "tconfig.h"
+#include "tsystem.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "libgcc_tm.h"
+
+#define OFFLOAD_FUNC_TABLE_SECTION_NAME ".gnu.offload_funcs"
+#define OFFLOAD_VAR_TABLE_SECTION_NAME ".gnu.offload_vars"
+
+#ifdef CRT_BEGIN
+
+#if defined(HAVE_GAS_HIDDEN) && defined(ENABLE_OFFLOADING)
+void *__offload_func_table[0]
+ __attribute__ ((__used__, visibility ("hidden"),
+ section (OFFLOAD_FUNC_TABLE_SECTION_NAME))) = { };
+void *__offload_var_table[0]
+ __attribute__ ((__used__, visibility ("hidden"),
+ section (OFFLOAD_VAR_TABLE_SECTION_NAME))) = { };
+#endif
+
+#elif defined CRT_END
+
+#if defined(HAVE_GAS_HIDDEN) && defined(ENABLE_OFFLOADING)
+void *__offload_funcs_end[0]
+ __attribute__ ((__used__, visibility ("hidden"),
+ section (OFFLOAD_FUNC_TABLE_SECTION_NAME))) = { };
+void *__offload_vars_end[0]
+ __attribute__ ((__used__, visibility ("hidden"),
+ section (OFFLOAD_VAR_TABLE_SECTION_NAME))) = { };
+
+extern void *__offload_func_table[];
+extern void *__offload_var_table[];
+
+void *__OFFLOAD_TABLE__[]
+ __attribute__ ((__visibility__ ("hidden"))) =
+{
+ &__offload_func_table, &__offload_funcs_end,
+ &__offload_var_table, &__offload_vars_end
+};
+#endif
+
+#else /* ! CRT_BEGIN && ! CRT_END */
+#error "One of CRT_BEGIN or CRT_END must be defined."
+#endif