last test, using glibc library

tests/C/func3/Makefile

@@ -0,0 +1,52 @@
+TARGET   = func3
+
+TARGET_ARCH=riscv32
+
+CC       = riscv32-unknown-linux-gnu-gcc
+# compiling flags here
+#CFLAGS = -Wall -I. -O0 -nostdlib -march=rv32i -mabi=ilp32 --entry main 
+#CFLAGS = -Wall -I. -O0
+CFLAGS = -Wall -I. -O0 -Xlinker --gc-sections -lgcc -lc -static 
+
+
+LINKER   = riscv32-unknown-linux-gnu-gcc
+# linking flags here
+LFLAGS   = -I. --entry main 
+LIBS   = $(EXTRA_LIBS)
+
+
+# change these to proper directories where each file should be
+SRCDIR   = ./
+OBJDIR   = .
+BINDIR   = ./
+INCDIR = -I.
+LIBDIR = -L.
+
+
+SOURCES  := $(wildcard $(SRCDIR)/*.c)
+INCLUDES := $(wildcard $(INCDIR)/*.h)
+OBJECTS  := $(SOURCES:$(SRCDIR)/%.c=$(OBJDIR)/%.o)
+rm       = rm -f
+
+
+$(BINDIR)/$(TARGET): $(OBJECTS)
+#	$(LINKER) $(OBJECTS) $(LFLAGS) $(LIBS) $(LIBDIR) -o $@
+	riscv32-unknown-linux-gnu-objdump -d $< > dump
+	objcopy -Oihex $< $(TARGET).hex
+#	@echo "Linking complete!"
+
+$(OBJECTS): $(OBJDIR)/%.o : $(SRCDIR)/%.c
+	@echo "Compiling "$<" ..."
+#	$(CC) $(CFLAGS) $(INCDIR) -c $< -o $@
+	$(CC) $(CFLAGS) $(INCDIR) $< -o $@
+	@echo "Done!"
+
+.PHONY: clean
+clean:
+	@$(rm) $(OBJECTS) *.hex dump
+	@echo "Cleanup complete!"
+
+.PHONY: remove
+remove: clean
+	@$(rm) $(BINDIR)/$(TARGET)
+	@echo "Executable removed!"

tests/C/func3/func3.c

@@ -0,0 +1,36 @@
+#include <string.h>
+
+#define TRACE (*(unsigned char *)0x40000000)
+
+void print(char *msg) {
+  int i = 0;
+  while(msg[i] != '\0') {
+    TRACE = msg[i];
+    i++;
+  }
+}
+
+int func1(int a, int* b) {
+  return a - (*b);
+}
+
+
+void main(void) {
+  int x1, x2, x3;
+  int aux[5] = {0};
+  int aux2[5];
+
+  x1 = 6;
+  x2 = 7;
+
+  x3 = func1(x1, &x2);
+
+  if (x3 == (6-7)) {
+    print("OK\n");
+  } else {
+    print("ERROR\n");
+  }
+
+
+  memcpy(aux, aux2, 5);
+}