arch: x86 -> x86_64 and build system changes

kernel/Makefile.build.in

@@ -16,6 +16,7 @@ endif
 DEPSRCS=$(wildcard $(SRC)/*.c)
 
 CFLAGS += -I$(SRC)/include -I@abs_builddir@/../ -I@abs_builddir@/include -D__KERNEL__  -g -fno-omit-frame-pointer -fno-inline -fno-inline-small-functions
+CFLAGS += -mcmodel=large -mno-red-zone
 LDFLAGS += -e arch_start
 IHKOBJ = ihk/ihk.o
 

kernel/Makefile.in

@@ -36,7 +36,7 @@ $(O):
 	@echo 'SRC = $(SRC)' > $@
 	@echo 'IHKBASE = $(IHKBASE)' >> $@
 	@echo 'TARGET = $(notdir $(patsubst %/,%,$(dir $@)))' >> $@
-	@echo 'TARGETDIR = $$(shell echo $$(TARGET) | sed "s/-/\//")' >> $@
+	@echo 'TARGETDIR = smp/$(ARCH)' >> $@
 	@cat Makefile.build >> $@
 	@rm -f $(dir $@)/Makefile.dep
 

kernel/include/elfcore.h

@@ -118,7 +118,7 @@ extern void arch_fill_prstatus(struct elf_prstatus64 *prstatus, struct thread *t
 #endif /* __HEADER_ELFCORE_H */
 #else /* POSTK_DEBUG_ARCH_DEP_18 */
 #ifdef __x86_64
-#include "../../arch/x86/kernel/include/elfcore.h"
+#include "../../arch/x86_64/kernel/include/elfcore.h"
 #elif __aarch64__
 #include "../../arch/arm64/kernel/include/elfcore.h"
 #endif