initial

Author: Mekapaedia

Makefile

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+SRC=as4.c
+EXE=as4
+EXTRACFLAGS=-lm
+EXTRALDFLAGS=-lm
+export SRC
+export EXE
+export EXTRACFLAGS
+export EXTRALDFLAGS
+
+all: debug
+
+
+fast: phony
+	$(MAKE) -f Makefile.fast.gcc
+
+debug: phony
+	$(MAKE) -f Makefile.dev.gcc
+
+#docs:
+#	rm -f docs.html
+#	doxygen
+#	ln -s html/index.html docs.html
+
+clean:
+	rm -rf $(SRC:.c=.gcno) $(SRC:.c=.gcda) $(SRC:.c=.gcov) $(SRC:.c=.o)
+	rm -rf html gmon.out docs.html $(EXE) *.dyn *.dpi *.lock *.stackdump *.db
+
+phony: 
+	true

Makefile.dev.gcc

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+CC=gcc
+DEVFLAGS=-std=c99 -ggdb3 -pg -O0 -Wall -Wextra -pedantic -Wdeclaration-after-statement \
+-Wshadow -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes \
+-Wno-missing-braces -Wno-missing-field-initializers -Wformat=2 \
+-Wswitch-default -Wswitch-enum -Wcast-align -Wpointer-arith \
+-Wbad-function-cast -Wstrict-overflow=5 -Wstrict-prototypes -Winline \
+-Wundef -Wnested-externs -Wcast-qual -Wunreachable-code \
+-Wlogical-op -Wfloat-equal -Wstrict-aliasing=2 -Wredundant-decls \
+-Wold-style-definition -Wwrite-strings \
+-fno-omit-frame-pointer -ffloat-store -fno-common -fstrict-aliasing \
+-fprofile-arcs -ftest-coverage -Wp,-D_FORTIFY_SOURCE=2 \
+-Winit-self -Wpacked -Wmissing-declarations -Wmissing-format-attribute \
+-Wmissing-noreturn -Wnested-externs -Wsign-compare -Wunsafe-loop-optimizations \
+-Werror-implicit-function-declaration -Wmissing-include-dirs -Wmissing-field-initializers \
+-Wvolatile-register-var -Wdisabled-optimization -Wsign-conversion \
+-Wno-long-long -Winvalid-pch -Wlogical-op -Wunused-result -Wdisabled-optimization 
+CFLAGS=$(DEVFLAGS) $(EXTRACFLAGS) -c
+LDFLAGS=$(DEVFLAGS) $(EXTRALDFLAGS) -lgcov
+OBJ=$(SRC:.c=.o)
+
+all: $(SRC) $(EXE)
+
+$(EXE): $(OBJ)
+	$(CC) $(OBJ) -o $@ $(LDFLAGS)
+
+%.o: %.c
+	$(CC) $(CFLAGS) $< -o $@

Makefile.fast.gcc

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+CC=gcc
+FASTFLAGS=-O3 -s -march=native -fomit-frame-pointer -pipe -Wdisabled-optimization
+CFLAGS=$(FASTFLAGS) $(EXTRACFLAGS) -c
+LDFLAGS=$(FASTFLAGS) $(EXTRALDFLAGS)
+OBJ=$(SRC:.c=.o)
+
+all: $(SRC) $(EXE)
+
+$(EXE): $(OBJ)
+	$(CC) $(OBJ) -o $@ $(LDFLAGS)
+
+%.o: %.c
+	$(CC) $(CFLAGS) $< -o $@

README.md

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+# CPU Assembler
+The assembler for the Nibble Knowledge CPU

as4.c

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+#include "as4.h"
+
+int main(int argc, char **argv)
+{
+	if(argc < 3)
+	{
+		help();
+		return 0;
+	}
+	else
+	{
+		FILE *input;
+		FILE *output;
+		char *line = NULL;
+		ssize_t linelen = -1;
+		size_t len = 0;
+
+		input = fopen(argv[1], "r");
+		if(input == NULL)
+		{
+			perror("Could not open input file");
+			return 1;
+		}
+		
+		output = fopen(argv[2], "w");
+		if(output == NULL)
+		{
+			perror("Could not open output file");
+			return 2;
+		}
+		
+		linelen = getline(&line, &len, input);
+		while(linelen > -1)
+		{
+			puts(line);
+			linelen = getline(&line, &len, input);
+		}
+		
+	}
+	
+}
+
+void help(void)
+{
+	puts("This is the low level assembler for the Nibble Knowledge 4-bit computer");
+	puts("");
+	puts("Usage: as4 input output");
+
+}

as4.h

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+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+
+void help(void);