init

counter.S

@@ -1,15 +1,20 @@
     .data
-sentence: .ascii "Become a Prograammer"
+//                0x8000102c
+sentence: .ascii "Become a Prograammermmmmmrr\0"
+//                ^
+//                    ^ 
 
     .text
     .align 2
     .globl _start
 
 _start:
+    
     la      t2, sentence      # Load the address of sentence into t2
 
-    li      t0, 0x6d    // ascii 'm'
+    li      t0, 0x72    // ascii 'm'
-    li      t1, 0       // licznik wystapien 'm'
+    
+    li      t1, 0x00    // licznik wystapien 'm'
     
 print_loop:
     lbu     t3, 0(t2)         # Load the byte (character) from address in t2

make/Make.rules

@@ -0,0 +1,81 @@
+ARCH=riscv32-unknown-elf
+GNU_DIR=$(HOME)/riscv/opt/rv32im_zicsr/
+GNU_BIN=$(GNU_DIR)/bin
+
+
+CC=$(GNU_BIN)/$(ARCH)-gcc
+CXX=$(GNU_BIN)/$(ARCH)-g++
+AS=$(GNU_BIN)/$(ARCH)-as
+LD=$(GNU_BIN)/$(ARCH)-ld
+OBJCOPY=$(GNU_BIN)/$(ARCH)-objcopy
+OBJDUMP=$(GNU_BIN)/$(ARCH)-objdump
+SIZE=$(GNU_BIN)/$(ARCH)-size
+AR=$(GNU_BIN)/$(ARCH)-ar
+RANLIB=$(GNU_BIN)/$(ARCH)-ranlib
+
+
+CFLAGS+=-ffreestanding 
+CFLAGS+=-fno-pic
+CFLAGS+=-march=rv32i -mabi=ilp32
+CFLAGS+= -O0 -g
+
+
+LDFLAGS+=-nostdlib
+LDFLAGS+=-Wl,-Ttext=0x80000000
+LDFLAGS+= -g
+
+# see: https://github.com/riscv/riscv-gcc/issues/120
+#LDFLAGS+=-Wl,--no-relax
+
+
+
+ASFLAGS+=$(CFLAGS)
+CXXFLAGS+=$(CFLAGS)
+
+CLEAN_DIRS=$(SUBDIRS:%=clean-%)
+ALL_DIRS=$(SUBDIRS:%=all-%)
+
+OBJDUMPFLAGS+=-Mnumeric,no-aliases
+
+.PHONY: all clean world $(CLEAN_DIRS) $(ALL_DIRS)
+
+
+%.bin : %
+	$(OBJCOPY) $< -O binary $@
+
+%.lst : %
+	$(OBJDUMP) $(OBJDUMPFLAGS) -dr $< > $<.lst
+
+% : %.o
+	$(LINK.c) $(LDFLAGS) -o $@ $^ $(LDLIBS)
+	$(SIZE) -x -A $@
+
+%.s: %.c
+	$(COMPILE.c) -S -o $@ $<
+
+%.s: %.cc
+	$(COMPILE.cc) -S -o $@ $<
+
+%.o: %.c
+	$(COMPILE.c) -o $@ $<
+
+%.o: %.cc
+	$(COMPILE.cc) -o $@ $<
+
+%.srec: %
+	$(OBJCOPY) $< -O srec $@ 
+
+
+
+
+all:: $(ALL_DIRS)
+
+clean:: $(CLEAN_DIRS)
+
+$(ALL_DIRS)::
+	$(MAKE) -C $(@:all-%=%) all
+
+$(CLEAN_DIRS)::
+	$(MAKE) -C $(@:clean-%=%) clean
+
+world:: clean all

make/Makefile

@@ -0,0 +1,12 @@
+
+SUBDIRS=\
+	load4regs \
+	counter \
+	padd \
+	link \
+	uart \
+	sw \
+	freestanding
+
+TOP=.
+include $(TOP)/Make.rules