Initial test framework

Clean up makefiles
Everything buildable under docker (or natively)

apps/helloworld/Makefile

@@ -1,27 +1,7 @@
-PROJECT:=helloworld
-
-DOCKER_IMAGE=riscv-dev
-DOCKER_CMD:=docker run --rm -v ${PWD}../../../:/data -w /data/apps/${PROJECT} ${DOCKER_IMAGE}
-PREFIX:=${DOCKER_CMD} riscv64-unknown-elf-
-CFLAGS+=-I../../common
-CFLAGS+=-fno-stack-protector
-CFLAGS+=-static-libgcc -fdata-sections -ffunction-sections
-CFLAGS+=-g -Os -march=rv32ima_zicsr -mabi=ilp32 -static
-LDFLAGS:= -T ../linker.ld -nostdlib -Wl,--gc-sections
-LIBS:= #-lgcc # needed for softfp
-
-SRCS=${PROJECT}.c ../crt0.S
-
-all:
-	${PREFIX}gcc -o ${PROJECT}.elf ${CFLAGS} ${LDFLAGS} ${SRCS} ${LIBS}
-	$(PREFIX)objcopy ${PROJECT}.elf -O binary ${PROJECT}.bin
-
-disasm: all
-	$(PREFIX)objdump -S -d -f ${PROJECT}.elf
-
-test: all
-	../../host/host ${PWD}/${PROJECT}.bin
-
-clean:
-	rm -f ${PROJECT}.o ${PROJECT}.elf ${PROJECT}.bin
-
+TOPDIR=../../
+PROJECT:=$(shell basename ${PWD})
+SRCS=${PROJECT}.c ${TOPDIR}/apps/crt0.S
+all: all_common
+test: test_common
+clean: clean_common
+include ${TOPDIR}/apps/makefile.common