Be able to actually run the blinky example on an nRF
runtime.Sleep() doesn't work yet so it prints a lot of data. Also, this depends on a small patch to nrfx.
Этот коммит содержится в:
Ayke van Laethem
родитель
10427c2b6f
коммит
a446b4de97
3 изменённых файлов: 156 добавлений и 17 удалений
97
Makefile
97
Makefile
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@ -2,27 +2,96 @@
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# aliases
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all: tgo
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tgo: build/tgo
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test: build/hello.o
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.PHONY: all tgo test run-test clean
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.PHONY: all tgo run-hello run-blinky flash-blinky clean
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CFLAGS = -Wall -Werror -O2 -g -flto
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# Custom LLVM toolchain.
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LLVM =
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LINK = $(LLVM)llvm-link
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LLC = $(LLVM)llc
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build/tgo: *.go
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@mkdir -p build
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@go build -o build/tgo -i .
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CFLAGS = -Wall -Werror -Os -g -fno-exceptions -flto -ffunction-sections -fdata-sections $(LLFLAGS)
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build/hello.o: build/tgo src/examples/hello/*.go src/runtime/*.go
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@./build/tgo -printir -o build/hello.o examples/hello
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RUNTIME = build/runtime.bc
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build/runtime.o: src/runtime/*.c src/runtime/*.h
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clang $(CFLAGS) -c -o $@ src/runtime/*.c
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ifeq ($(TARGET),pca10040)
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GCC = arm-none-eabi-gcc
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LD = arm-none-eabi-ld -T arm.ld
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OBJCOPY = arm-none-eabi-objcopy
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LLFLAGS += -target armv7m-none-eabi
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TGOFLAGS += -target $(TARGET)
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CFLAGS += -I$(CURDIR)/src/runtime
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CFLAGS += -I$(CURDIR)/lib/nrfx
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CFLAGS += -I$(CURDIR)/lib/nrfx/mdk
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CFLAGS += -I$(CURDIR)/lib/CMSIS/CMSIS/Include
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CFLAGS += -DNRF52832_XXAA
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CFLAGS += -Wno-uninitialized
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RUNTIME += build/runtime_nrf.bc
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RUNTIME += build/system_nrf52.bc
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OBJ += build/startup_nrf51.o # TODO nrf52, see https://bugs.llvm.org/show_bug.cgi?id=31601
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build/hello: build/hello.o build/runtime.o
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@clang $(CFLAGS) -o $@ $^
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else
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# Regular *nix system.
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GCC = gcc
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LD = clang
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endif
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run-test: build/hello
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@./build/hello
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run-hello: build/hello
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./build/hello
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run-blinky: build/blinky
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./build/blinky
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flash-blinky: build/blinky.hex
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nrfjprog -f nrf52 --sectorerase --program $< --reset
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clean:
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@rm -rf build
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# Build the Go compiler.
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build/tgo: *.go
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@mkdir -p build
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go build -o build/tgo -i .
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# Build textual IR with the Go compiler.
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build/%.ll: src/examples/% src/examples/%/*.go build/tgo src/runtime/*.go
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./build/tgo $(TGOFLAGS) -printir -o $@ $(subst src/,,$<)
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# Compile C sources for the runtime.
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build/%.bc: src/runtime/%.c src/runtime/*.h
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@mkdir -p build
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clang $(CFLAGS) -c -o $@ $<
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# Compile system_* file for the nRF.
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build/%.bc: lib/nrfx/mdk/%.c
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@mkdir -p build
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clang $(CFLAGS) -c -o $@ $^
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# Compile startup_* file for the nRF.
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build/%.o: lib/nrfx/mdk/gcc_%.S
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@mkdir -p build
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clang $(CFLAGS) -c -o $@ $^
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# Merge all LLVM files together in a single bitcode file.
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build/%.bc: $(RUNTIME) build/%.ll
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$(LINK) -o $@ $^
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# Generate an ELF object file from a LLVM bitcode file.
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build/%.o: build/%.bc
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$(LLC) -filetype=obj -O2 -o $@ $^
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# Generate output ELF executable.
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build/%: build/%.o $(OBJ)
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$(LD) -o $@ $^
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# Generate output ELF for use in objcopy (on a microcontroller).
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build/%.elf: build/%.o $(OBJ)
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$(LD) -o $@ $^
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# Convert executable to Intel hex file (for flashing).
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build/%.hex: build/%.elf
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$(OBJCOPY) -O ihex $^ $@
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63
arm.ld
Обычный файл
63
arm.ld
Обычный файл
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@ -0,0 +1,63 @@
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MEMORY
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{
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FLASH_TEXT (rw) : ORIGIN = 0x00000000, LENGTH = 256K /* .text */
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RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 16K
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}
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/* define output sections */
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SECTIONS
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{
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/* The program code and other data goes into FLASH */
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.text :
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{
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_stext = .;
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. = ALIGN(4);
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KEEP(*(.isr_vector))
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*(.text) /* .text sections (code) */
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*(.text*) /* .text* sections (code) */
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*(.rodata) /* .rodata sections (constants, strings, etc.) */
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*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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. = ALIGN(4);
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_etext = .; /* define a global symbol at end of code */
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} >FLASH_TEXT
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/* used by the startup to initialize data */
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_sidata = LOADADDR(.data);
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/* This is the initialized data section
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The program executes knowing that the data is in the RAM
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but the loader puts the initial values in the FLASH (inidata).
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It is one task of the startup to copy the initial values from FLASH to RAM. */
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.data :
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{
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. = ALIGN(4);
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_sdata = .; /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
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*(.data) /* .data sections */
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*(.data*) /* .data* sections */
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. = ALIGN(4);
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_edata = .; /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
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} >RAM AT>FLASH_TEXT
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/* Uninitialized data section */
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.bss :
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{
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. = ALIGN(4);
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_sbss = .; /* define a global symbol at bss start; used by startup code */
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*(.bss)
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = .; /* define a global symbol at bss end; used by startup code and GC */
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} >RAM
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}
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/* For the nrfx startup file */
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__etext = _etext;
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__data_start__ = _sdata;
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__bss_start__ = _sbss;
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13
tgo.go
13
tgo.go
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@ -140,7 +140,7 @@ func NewCompiler(pkgName, triple string) (*Compiler, error) {
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return c, nil
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}
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func (c *Compiler) Parse(mainPath string) error {
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func (c *Compiler) Parse(mainPath string, buildTags []string) error {
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tripleSplit := strings.Split(c.triple, "-")
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config := loader.Config {
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@ -152,7 +152,7 @@ func (c *Compiler) Parse(mainPath string) error {
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CgoEnabled: true,
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UseAllFiles: false,
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Compiler: "gc", // must be one of the recognized compilers
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BuildTags: []string{"tgo"},
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BuildTags: append([]string{"tgo"}, buildTags...),
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},
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AllowErrors: true,
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}
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@ -1074,12 +1074,19 @@ func (c *Compiler) EmitObject(path string) error {
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// Helper function for Compiler object.
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func Compile(pkgName, outpath, target string, printIR bool) error {
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var buildTags []string
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// TODO: put this somewhere else
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if target == "pca10040" {
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buildTags = append(buildTags, "nrf")
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target = "armv7m-none-eabi"
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}
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c, err := NewCompiler(pkgName, target)
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if err != nil {
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return err
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}
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parseErr := c.Parse(pkgName)
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parseErr := c.Parse(pkgName, buildTags)
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if printIR {
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fmt.Println(c.IR())
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}
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