diff --git a/project/codegen.mk b/project/codegen.mk
index ee8dfa8..72d6000 100644
--- a/project/codegen.mk
+++ b/project/codegen.mk
@@ -8,6 +8,8 @@ clean-gen:
 		rm -f $(GEN_EMITTER_HEADERS)
 		rm -f $(GEN_OPCODES_SRCS)
 		rm -f $(GEN_OPCODES_HEADERS)
+		rm -f $(GEN_REGALLOC_SRCS)
+		rm -f $(GEN_REGALLOC_HEADERS)
 		rm -f $(GEN_BE_DIR_ARM)/emitter.tag
 		rm -f $(GEN_BE_DIR_AMD64)/emitter.tag
 		rm -f $(GEN_BE_DIR_IA32)/emitter.tag
@@ -18,6 +20,11 @@ clean-gen:
 		rm -f $(GEN_BE_DIR_IA32)/opcodes.tag
 		rm -f $(GEN_BE_DIR_SPARC)/opcodes.tag
 		rm -f $(GEN_BE_DIR_TEMPLATE)/opcodes.tag
+		rm -f $(GEN_BE_DIR_ARM)/regalloc.tag
+		rm -f $(GEN_BE_DIR_AMD64)/regalloc.tag
+		rm -f $(GEN_BE_DIR_IA32)/regalloc.tag
+		rm -f $(GEN_BE_DIR_SPARC)/regalloc.tag
+		rm -f $(GEN_BE_DIR_TEMPLATE)/regalloc.tag
 
 GEN_ALL 	= $(GEN_IR_SRCS) \
 		  $(GEN_IR_HEADERS) \
@@ -25,6 +32,8 @@ GEN_ALL 	= $(GEN_IR_SRCS) \
 		  $(GEN_EMITTER_HEADERS) \
 		  $(GEN_OPCODES_SRCS) \
 		  $(GEN_OPCODES_HEADERS) \
+		  $(GEN_REGALLOC_SRCS) \
+		  $(GEN_REGALLOC_HEADERS) \
 
 
 # build/gen/ir/be
@@ -156,6 +165,53 @@ $(GEN_BE_DIR_TEMPLATE)/gen_TEMPLATE_new_nodes.h:	$(GEN_BE_DIR_TEMPLATE)/opcodes.
 
 
 
+# gen-regalloc
+GEN_REGALLOC_TOOL = $(SOURCE_DIR)/ir/be/scripts/generate_regalloc_if.pl
+
+
+$(GEN_BE_DIR_ARM)/regalloc.tag:		$(GEN_REGALLOC_TOOL) $(GEN_SPEC_ARM)
+	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_ARM) $(GEN_BE_DIR_ARM)
+	touch $@
+
+
+$(GEN_BE_DIR_AMD64)/regalloc.tag:	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_AMD64)
+	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_AMD64) $(GEN_BE_DIR_AMD64)
+	touch $@
+
+
+$(GEN_BE_DIR_IA32)/regalloc.tag:	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_IA32)
+	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_IA32) $(GEN_BE_DIR_IA32)
+	touch $@
+
+
+$(GEN_BE_DIR_SPARC)/regalloc.tag:	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_SPARC)
+	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_SPARC) $(GEN_BE_DIR_SPARC)
+	touch $@
+
+
+$(GEN_BE_DIR_TEMPLATE)/regalloc.tag:	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_TEMPLATE)
+	$(GEN_REGALLOC_TOOL) $(GEN_SPEC_TEMPLATE) $(GEN_BE_DIR_TEMPLATE)
+	touch $@
+
+
+
+$(GEN_BE_DIR_ARM)/gen_arm_regalloc_if.c:	$(GEN_BE_DIR_ARM)/regalloc.tag
+$(GEN_BE_DIR_ARM)/gen_arm_regalloc_if.h:	$(GEN_BE_DIR_ARM)/regalloc.tag
+
+$(GEN_BE_DIR_AMD64)/gen_amd64_regalloc_if.c:	$(GEN_BE_DIR_AMD64)/regalloc.tag
+$(GEN_BE_DIR_AMD64)/gen_amd64_regalloc_if.h:	$(GEN_BE_DIR_AMD64)/regalloc.tag
+
+$(GEN_BE_DIR_IA32)/gen_ia32_regalloc_if.c:	$(GEN_BE_DIR_IA32)/regalloc.tag
+$(GEN_BE_DIR_IA32)/gen_ia32_regalloc_if.h:	$(GEN_BE_DIR_IA32)/regalloc.tag
+
+$(GEN_BE_DIR_SPARC)/gen_sparc_regalloc_if.c:	$(GEN_BE_DIR_SPARC)/regalloc.tag
+$(GEN_BE_DIR_SPARC)/gen_sparc_regalloc_if.h:	$(GEN_BE_DIR_SPARC)/regalloc.tag
+
+$(GEN_BE_DIR_TEMPLATE)/gen_TEMPLATE_regalloc_if.c:	$(GEN_BE_DIR_TEMPLATE)/regalloc.tag
+$(GEN_BE_DIR_TEMPLATE)/gen_TEMPLATE_regalloc_if.h:	$(GEN_BE_DIR_TEMPLATE)/regalloc.tag
+
+
+
 # gen-all
 gen-ir:			$(GEN_IR_SRCS) $(GEN_IR_HEADERS)
 
@@ -163,7 +219,9 @@ gen-emitter:		$(GEN_EMITTER_SRCS) $(GEN_EMITTER_HEADERS)
 
 gen-opcodes:		$(GEN_OPCODES_SRCS) $(GEN_OPCODES_HEADERS)
 
-gen-all:		gen-ir gen-emitter gen-opcodes
+gen-regalloc:		$(GEN_REGALLOC_SRCS) $(GEN_REGALLOC_HEADERS)
+
+gen-all:		gen-ir gen-emitter gen-opcodes gen-regalloc
 
 gen.tag:		$(GEN_ALL)
 			touch gen.tag
@@ -173,4 +231,4 @@ gen:			gen.tag
 
 .PHONY:	clean-gen \
 	gen gen-all \
-	gen-ir gen-emitter gen-opcodes
+	gen-ir gen-emitter gen-opcodes gen-regalloc
diff --git a/project/common.mk b/project/common.mk
index a964d23..24b24c3 100644
--- a/project/common.mk
+++ b/project/common.mk
@@ -15,3 +15,10 @@ GEN_OPCODES_SRCS = \
 	build/gen/ir/be/ia32/gen_ia32_new_nodes.c \
 	build/gen/ir/be/sparc/gen_sparc_new_nodes.c \
 	build/gen/ir/be/TEMPLATE/gen_TEMPLATE_new_nodes.c \
+
+GEN_REGALLOC_SRCS = \
+	build/gen/ir/be/arm/gen_arm_regalloc_if.c \
+	build/gen/ir/be/amd64/gen_amd64_regalloc_if.c \
+	build/gen/ir/be/ia32/gen_ia32_regalloc_if.c \
+	build/gen/ir/be/sparc/gen_sparc_regalloc_if.c \
+	build/gen/ir/be/TEMPLATE/gen_TEMPLATE_regalloc_if.c \
diff --git a/project/headers.mk b/project/headers.mk
index 8d770cb..4caca62 100644
--- a/project/headers.mk
+++ b/project/headers.mk
@@ -16,3 +16,10 @@ GEN_OPCODES_HEADERS = \
 	build/gen/ir/be/ia32/gen_ia32_new_nodes.h \
 	build/gen/ir/be/sparc/gen_sparc_new_nodes.h \
 	build/gen/ir/be/TEMPLATE/gen_TEMPLATE_new_nodes.h \
+
+GEN_REGALLOC_HEADERS = \
+	build/gen/ir/be/arm/gen_arm_regalloc_if.h \
+	build/gen/ir/be/amd64/gen_amd64_regalloc_if.h \
+	build/gen/ir/be/ia32/gen_ia32_regalloc_if.h \
+	build/gen/ir/be/sparc/gen_sparc_regalloc_if.h \
+	build/gen/ir/be/TEMPLATE/gen_TEMPLATE_regalloc_if.h \