[Minios-devel] [UNIKRAFT/LIBUCONTEXT PATCH 4/4] Initial port of libucontext on unikraft

[Charalampos Mainas <Charalampos.Mainas@xxxxxxxxx>]

This is the initial port of libucontext to Unikraft as an external
library. libucontext depends on newlib for some headers. 

Signed-off-by: Charalampos Mainas <Charalampos.Mainas@xxxxxxxxx>
---
 Config.uk   |  5 ++++
 Makefile.uk | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 89 insertions(+)
 create mode 100644 Config.uk
 create mode 100644 Makefile.uk

diff --git a/Config.uk b/Config.uk
new file mode 100644
index 0000000..d0675aa
--- /dev/null
+++ b/Config.uk
@@ -0,0 +1,5 @@
+menuconfig LIBUCONTEXT
+           bool "ucontext.h API"
+           default n
+          select LIBNEWLIBC
+
diff --git a/Makefile.uk b/Makefile.uk
new file mode 100644
index 0000000..df2cff4
--- /dev/null
+++ b/Makefile.uk
@@ -0,0 +1,84 @@
+#  libucontext Makefile.uk
+#
+#  Authors: Charalampos Mainas <Charalampos.Mainas@xxxxxxxxx>
+#
+#   Copyright (c) 2019, NEC Europe Ltd., NEC Corporation. All rights reserved.
+#
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions
+#  are met:
+#
+#  1. Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+#  2. 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.
+#  3. Neither the name of the copyright holder 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 HOLDER 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.
+#
+#  THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+#
+
+
+################################################################################
+# Library registration
+################################################################################
+$(eval $(call addlib_s,libucontext,$(CONFIG_LIBUCONTEXT)))
+
+################################################################################
+# Sources
+################################################################################
+LIBUCONTEXT_VERSION=libucontext-master
+LIBUCONTEXT_URL=https://github.com/AdelieLinux/libucontext/archive/master.zip
+LIBUCONTEXT_DIR=$(LIBUCONTEXT_VERSION)
+
+LIBUCONTEXT_PATCHDIR=$(LIBUCONTEXT_BASE)/patches
+$(eval $(call fetch,libucontext,$(LIBUCONTEXT_URL),master.zip))
+$(eval $(call patch,libucontext,$(LIBUCONTEXT_PATCHDIR),$(LIBUCONTEXT_DIR)))
+
+################################################################################
+# Helpers
+################################################################################
+LIBUCONTEXT_SRC=$(LIBUCONTEXT_ORIGIN)/$(LIBUCONTEXT_DIR)/arch/x86_64/
+
+################################################################################
+# Library includes
+################################################################################
+CINCLUDES-$(CONFIG_LIBUCONTEXT) += -I$(LIBUCONTEXT_BASE)/include
+
+################################################################################
+# Global flags
+################################################################################
+# Suppress some warnings to make the build process look neater
+SUPPRESS_FLAGS += -Wno-unused-parameter -Wno-unused-variable -Wno-nonnull      
 \
+-Wno-unused-but-set-variable -Wno-unused-label -Wno-char-subscripts            
 \
+-Wno-unused-function -Wno-missing-field-initializers -Wno-uninitialized        
 \
+-Wno-array-bounds -Wno-maybe-uninitialized -Wno-pointer-sign -Wno-unused-value 
 \
+-Wno-unused-macros -Wno-parentheses -Wno-implicit-function-declaration         
 \
+-Wno-missing-braces -Wno-endif-labels -Wno-unused-but-set-variable             
 \
+-Wno-implicit-function-declaration -Wno-type-limits -Wno-sign-compare
+
+LIBUCONTEXT_CFLAGS-y   += $(SUPPRESS_FLAGS)
+LIBUCONTEXT_CXXFLAGS-y += $(SUPPRESS_FLAGS)
+
+################################################################################
+# Sources
+################################################################################
+LIBUCONTEXT_SRCS-y += $(LIBUCONTEXT_SRC)/getcontext.S
+LIBUCONTEXT_SRCS-y += $(LIBUCONTEXT_SRC)/makecontext.c
+LIBUCONTEXT_SRCS-y += $(LIBUCONTEXT_SRC)/setcontext.S
+LIBUCONTEXT_SRCS-y += $(LIBUCONTEXT_SRC)/startcontext.S
+LIBUCONTEXT_SRCS-y += $(LIBUCONTEXT_SRC)/swapcontext.S
-- 
2.17.1


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