techmap_01.v « PRESENTATION_ExSyn « manual - iCE40/yosys - [no description]

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module test(input [31:0]  a, b,
            output [31:0] y);
assign y = a + b;
endmodule

adding: 0 5px 0 5px; } .highlight .hll { background-color: #ffffcc } .highlight { background: #ffffff; } .highlight .c { color: #888888 } /* Comment */ .highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */ .highlight .k { color: #008800; font-weight: bold } /* Keyword */ .highlight .ch { color: #888888 } /* Comment.Hashbang */ .highlight .cm { color: #888888 } /* Comment.Multiline */ .highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */ .highlight .cpf { color: #888888 } /* Comment.PreprocFile */ .highlight .c1 { color: #888888 } /* Comment.Single */ .highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */ .highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */ .highlight .ge { font-style: italic } /* Generic.Emph */ .highlight .gr { color: #aa0000 } /* Generic.Error */ .highlight .gh { color: #333333 } /* Generic.Heading */ .highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */ .highlight .go { color: #888888 } /* Generic.Output */ .highlight .gp { color: #555555 } /* Generic.Prompt */ .highlight .gs { font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #666666 } /* Generic.Subheading */ .highlight .gt { color: #aa0000 } /* Generic.Traceback */ .highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */ .highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */ .highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #008800 } /* Keyword.Pseudo */ .highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */ .highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */ .highlight .na { color: #336699 } /* Name.Attribute */ .highlight .nb { color: #003388 } /* Name.Builtin */ .highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */

--- a/Makefile
+++ b/Makefile
@@ -19,6 +19,7 @@ KLIB_BUILD ?= $(KLIB)/build/
 KERNEL_CONFIG := $(KLIB_BUILD)/.config
 KERNEL_MAKEFILE := $(KLIB_BUILD)/Makefile
 CONFIG_MD5 := $(shell md5sum $(KERNEL_CONFIG) 2>/dev/null | sed 's/\s.*//')
+STAMP_KERNEL_CONFIG := .kernel_config_md5_$(CONFIG_MD5)
 
 export KLIB KLIB_BUILD BACKPORT_PWD KMODDIR KMODPATH_ARG
 
@@ -36,7 +37,8 @@ mrproper:
 	@rm -f .kernel_config_md5 Kconfig.versions Kconfig.kernel
 	@rm -f backport-include/backport/autoconf.h
 
-.DEFAULT:
+.SILENT: $(STAMP_KERNEL_CONFIG)
+$(STAMP_KERNEL_CONFIG):
 	@set -e ; test -f .local-symbols || (						\
 	echo "/--------------"								;\
 	echo "| You shouldn't run make in the backports tree, but only in"		;\
@@ -60,56 +62,60 @@ mrproper:
 	echo "| (that isn't currently running.)"					;\
 	echo "\\--"									;\
 	false)
-	@set -e ; if [ "$$(cat .kernel_config_md5 2>/dev/null)" != "$(CONFIG_MD5)" ]	;\
-	then 										\
-		echo -n "Generating local configuration database from kernel ..."	;\
-		grep -v -f .local-symbols $(KERNEL_CONFIG) | grep = | (			\
-			while read l ; do						\
-				if [ "$${l:0:7}" != "CONFIG_" ] ; then			\
-					continue					;\
-				fi							;\
-				l=$${l:7}						;\
-				n=$${l%%=*}						;\
-				v=$${l#*=}						;\
-				if [ "$$v" = "m" ] ; then				\
-					echo config $$n					;\
-					echo '    tristate' 				;\
-				elif [ "$$v" = "y" ] ; then				\
-					echo config $$n					;\
-					echo '    bool'					;\
-				else							\
-					continue					;\
-				fi							;\
-				echo "    default $$v"					;\
-				echo ""							;\
-			done								\
-		) > Kconfig.kernel							;\
-		kver=$$($(MAKE) --no-print-directory -C $(KLIB_BUILD) kernelversion |	\
-			sed 's/^\(\(3\|2\.6\)\.[0-9]\+\).*/\1/;t;d')			;\
-		test "$$kver" != "" || echo "Kernel version parse failed!"		;\
-		test "$$kver" != ""							;\
-		kvers="$$(seq 14 39 | sed 's/^/2.6./')"					;\
-		kvers="$$kvers $$(seq 0 99 | sed 's/^/3./')"				;\
-		print=0									;\
-		for v in $$kvers ; do							\
-			if [ "$$print" = "1" ] ; then					\
-				echo config BACKPORT_KERNEL_$$(echo $$v | tr . _)	;\
-				echo "    def_bool y"					;\
-			fi								;\
-			if [ "$$v" = "$$kver" ] ; then print=1 ; fi			;\
-		done > Kconfig.versions							;\
-		# RHEL as well, sadly we need to grep for it				;\
-		RHEL_MAJOR=$$(grep '^RHEL_MAJOR' $(KERNEL_MAKEFILE) | 			\
-					sed 's/.*=\s*\([0-9]*\)/\1/;t;d')		;\
-		RHEL_MINOR=$$(grep '^RHEL_MINOR' $(KERNEL_MAKEFILE) | 			\
-					sed 's/.*=\s*\([0-9]*\)/\1/;t;d')		;\
-		for v in $$(seq 0 $$RHEL_MINOR) ; do 					\
-			echo config BACKPORT_RHEL_KERNEL_$${RHEL_MAJOR}_$$v		;\
-			echo "    def_bool y"						;\
-		done >> Kconfig.versions						;\
-		echo " done."								;\
-	fi										;\
-	echo "$(CONFIG_MD5)" > .kernel_config_md5
+	@rm -f .kernel_config_md5_*
+	@touch $@
+
+Kconfig.kernel: $(STAMP_KERNEL_CONFIG) .local-symbols
+	@printf "Generating local configuration database from kernel ..."
+	@grep -v -f .local-symbols $(KERNEL_CONFIG) | grep = | (			\
+		while read l ; do						\
+			if [ "$${l:0:7}" != "CONFIG_" ] ; then			\
+				continue					;\
+			fi							;\
+			l=$${l:7}						;\
+			n=$${l%%=*}						;\
+			v=$${l#*=}						;\
+			if [ "$$v" = "m" ] ; then				\
+				echo config $$n					;\
+				echo '    tristate' 				;\
+			elif [ "$$v" = "y" ] ; then				\
+				echo config $$n					;\
+				echo '    bool'					;\
+			else							\
+				continue					;\
+			fi							;\
+			echo "    default $$v"					;\
+			echo ""							;\
+		done								\
+	) > $@
+	@echo " done."
+
+Kconfig.versions: Kconfig.kernel
+	@kver=$$($(MAKE) --no-print-directory -C $(KLIB_BUILD) kernelversion |	\
+		sed 's/^\(\(3\|2\.6\)\.[0-9]\+\).*/\1/;t;d')			;\
+	test "$$kver" != "" || echo "Kernel version parse failed!"		;\
+	test "$$kver" != ""							;\
+	kvers="$$(seq 14 39 | sed 's/^/2.6./')"					;\
+	kvers="$$kvers $$(seq 0 99 | sed 's/^/3./')"				;\
+	print=0									;\
+	for v in $$kvers ; do							\
+		if [ "$$print" = "1" ] ; then					\
+			echo config BACKPORT_KERNEL_$$(echo $$v | tr . _)	;\
+			echo "    def_bool y"					;\
+		fi								;\
+		if [ "$$v" = "$$kver" ] ; then print=1 ; fi			;\
+	done > $@
+	@RHEL_MAJOR=$$(grep '^RHEL_MAJOR' $(KERNEL_MAKEFILE) | 			\
+				sed 's/.*=\s*\([0-9]*\)/\1/;t;d')		;\
+	RHEL_MINOR=$$(grep '^RHEL_MINOR' $(KERNEL_MAKEFILE) | 			\
+				sed 's/.*=\s*\([0-9]*\)/\1/;t;d')		;\
+	for v in $$(seq 0 $$RHEL_MINOR) ; do 					\
+		echo config BACKPORT_RHEL_KERNEL_$${RHEL_MAJOR}_$$v		;\
+		echo "    def_bool y"						;\
+	done >> $@
+
+.DEFAULT:
+	@$(MAKE) Kconfig.versions
 	@$(MAKE) -f Makefile.real "$@"
 
 .PHONY: defconfig-help
--- a/Makefile.real
+++ b/Makefile.real
@@ -54,7 +54,7 @@ defconfig-%::
 
 backport-include/backport/autoconf.h: .config Kconfig.versions Kconfig.kernel
 	@$(MAKE) oldconfig
-	@echo -n "Building backport-include/backport/autoconf.h ..."
+	@printf "Building backport-include/backport/autoconf.h ..."
 	@grep -f .local-symbols .config | (				\
 		echo "#ifndef COMPAT_AUTOCONF_INCLUDED"			;\
 		echo "#define COMPAT_AUTOCONF_INCLUDED"			;\
@@ -75,7 +75,12 @@ backport-include/backport/autoconf.h: .c
 			esac						;\
 		done							;\
 		echo "#endif /* COMPAT_AUTOCONF_INCLUDED */"		;\
-	) > backport-include/backport/autoconf.h
+	) > $@.new
+	@if cmp -s $@ $@.new; then \
+		rm -f $@.new; \
+	else \
+		mv $@.new $@; \
+	fi
 	@echo " done."
 
 .PHONY: modules