mk: support x32 ABI

x32 ABI provides benefits of x86-64 while using 32-bit pointers and
avoiding overhead of 64-bit pointers.

Test report: http://dpdk.org/ml/archives/dev/2015-February/012599.html

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
Tested-by: Haifeng Tang <haifengx.tang@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

diff --git a/config/defconfig_x86_x32-native-linuxapp-gcc b/config/defconfig_x86_x32-native-linuxapp-gcc
new file mode 100644 (file)
index 0000000..fb0afc4
--- /dev/null
+++ b/config/defconfig_x86_x32-native-linuxapp-gcc
@@ -0,0 +1,46 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+#include "common_linuxapp"
+
+CONFIG_RTE_MACHINE="native"
+
+CONFIG_RTE_ARCH="x86_x32"
+CONFIG_RTE_ARCH_X86_X32=y
+
+CONFIG_RTE_TOOLCHAIN="gcc"
+CONFIG_RTE_TOOLCHAIN_GCC=y
+
+#
+# KNI is not supported on 32-bit
+#
+CONFIG_RTE_LIBRTE_KNI=n

diff --git a/mk/arch/x86_x32/rte.vars.mk b/mk/arch/x86_x32/rte.vars.mk
new file mode 100644 (file)
index 0000000..3103dfc
--- /dev/null
+++ b/mk/arch/x86_x32/rte.vars.mk
@@ -0,0 +1,63 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#
+# arch:
+#
+#   - define ARCH variable (overridden by cmdline or by previous
+#     optional define in machine .mk)
+#   - define CROSS variable (overridden by cmdline or previous define
+#     in machine .mk)
+#   - define CPU_CFLAGS variable (overridden by cmdline or previous
+#     define in machine .mk)
+#   - define CPU_LDFLAGS variable (overridden by cmdline or previous
+#     define in machine .mk)
+#   - define CPU_ASFLAGS variable (overridden by cmdline or previous
+#     define in machine .mk)
+#   - may override any previously defined variable
+#
+# examples for CONFIG_RTE_ARCH: i686, x86_64, x86_64_32
+#
+
+ARCH  ?= x86_64
+ARCH_DIR := x86
+CROSS ?=
+
+CPU_CFLAGS  ?= -mx32
+CPU_LDFLAGS ?= -melf32_x86_64
+#CPU_ASFLAGS ?= -felf64
+# x32 is supported by Linux distribution with gcc4.8 and newer in some
+# cases there is backported support in gcc4.6
+ifneq ($(shell echo | $(CC) $(CPU_CFLAGS) -E - 2>/dev/null 1>/dev/null && echo 0), 0)
+       $(error This version of GCC does not support x32 ABI)
+endif
+
+export ARCH CROSS CPU_CFLAGS CPU_LDFLAGS CPU_ASFLAGS