Make the assembler generate whatever debuginfo it can

--- openjdk/hotspot/make/linux/makefiles/rules.make

+++ openjdk/hotspot/make/linux/makefiles/rules.make

@@ -34,7 +34,7 @@

 CC_COMPILE       = $(CC) $(CXXFLAGS) $(CFLAGS)

 CXX_COMPILE      = $(CXX) $(CXXFLAGS) $(CFLAGS)

-AS.S            = $(AS) $(ASFLAGS)

+AS.S            = $(AS) -g $(ASFLAGS)

 COMPILE.CC       = $(CC_COMPILE) -c

 GENASM.CC        = $(CC_COMPILE) -S

@@ -161,12 +161,12 @@

 %.o: %.s

 	@echo Assembling $<

 	$(QUIETLY) $(REMOVE_TARGET)

-	$(QUIETLY) $(AS.S) $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)

+	$(QUIETLY) $(AS.S) -g $(DEPFLAGS) -o $@ $< $(COMPILE_DONE)

 %.o: %.S

 	@echo Assembling $<

 	$(QUIETLY) $(REMOVE_TARGET)

-	$(COMPILE.CC) -o $@ $< $(COMPILE_DONE)

+	$(COMPILE.CC) -g -o $@ $< $(COMPILE_DONE)

 %.s: %.cpp

 	@echo Generating assembly for $<