javascript: Add new port targeting JavaScript via Emscripten.

In this port JavaScript is the underlying "machine" and MicroPython is
transmuted into JavaScript by Emscripten.  MicroPython can then run under
Node.js or in the browser.

1 files changed, 59 insertions, 0 deletions

diff --git a/ports/javascript/Makefile b/ports/javascript/Makefile
new file mode 100644
index 000000000..3ce698f10
--- /dev/null
+++ b/ports/javascript/Makefile
@@ -0,0 +1,59 @@
+include ../../py/mkenv.mk
+
+CROSS = 0
+
+QSTR_DEFS = qstrdefsport.h
+
+include $(TOP)/py/py.mk
+
+CC = emcc -g4
+LD = emcc -g4
+
+INC += -I.
+INC += -I$(TOP)
+INC += -I$(BUILD)
+
+CPP = clang -E
+CFLAGS = -m32 $(INC) -Wall -Werror -std=c99 $(COPT)
+LDFLAGS = -m32 -Wl,-Map=$@.map,--cref -Wl,--gc-sections
+
+CFLAGS += -O0 -DNDEBUG
+CFLAGS += -fdata-sections -ffunction-sections
+
+SRC_LIB = $(addprefix lib/,\
+	utils/interrupt_char.c \
+	utils/stdout_helpers.c \
+	utils/pyexec.c \
+	mp-readline/readline.c \
+	)
+
+SRC_C = \
+	main.c \
+	mphalport.c \
+	modutime.c \
+
+SRC_QSTR += $(SRC_C)
+
+OBJ = 
+OBJ = $(PY_O) 
+OBJ += $(addprefix $(BUILD)/, $(SRC_LIB:.c=.o))
+OBJ += $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
+
+JSFLAGS = -O0 -s EXPORTED_FUNCTIONS="['_mp_js_init', '_mp_js_init_repl', '_mp_js_do_str', '_mp_js_process_char', '_mp_hal_get_interrupt_char', '_mp_keyboard_interrupt']" -s EXTRA_EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']" --memory-init-file 0 --js-library library.js
+
+all: $(BUILD)/micropython.js
+
+$(BUILD)/micropython.js: $(OBJ) library.js wrapper.js
+	$(ECHO) "LINK $(BUILD)/firmware.js"
+	$(Q)emcc $(LDFLAGS) -o $(BUILD)/firmware.js $(OBJ) $(JSFLAGS)
+	cat $(BUILD)/firmware.js > $@
+	cat wrapper.js >> $@
+
+min: $(BUILD)/micropython.js
+	uglifyjs $< -c -o $(BUILD)/micropython.min.js
+
+test: $(BUILD)/micropython.js $(TOP)/tests/run-tests
+	$(eval DIRNAME=ports/$(notdir $(CURDIR)))
+	cd $(TOP)/tests && MICROPY_MICROPYTHON=../ports/javascript/node_run.sh ./run-tests
+
+include $(TOP)/py/mkrules.mk