1 files changed, 97 insertions, 0 deletions
diff --git a/assembler.c b/assembler.c
new file mode 100644
index 0000000..eaf4d38
--- /dev/null
+++ b/assembler.c
@@ -0,0 +1,97 @@
+#include <stdio.h>
+#include <stdint.h>
+
+#include "lex.h"
+#include "parse.h"
+#include "instruction.h"
+
+#if 0
+/**
+ * Types for intermediate storage of instructions
+ */
+struct r_type {
+	enum OPER operation;
+	enum REG dest;
+	enum REG left;
+	enum REG right;
+};
+
+struct i_type { /* covers WI and NI */
+	enum OPER operation;
+	enum REG dest;
+	enum REG left;
+	int16_t immediate;
+};
+
+struct jr_type {
+	enum JCOND condition;
+	enum REG reg;
+};
+
+struct ji_type {
+	enum JCOND condition;
+	uint16_t immediate;
+};
+
+struct b_type { /* FIXME merge with ji_type? */
+	enum JCOND condition;
+	uint16_t immediate; /* capped to 10 bits by IS */
+};
+
+/* Union for bringing above together */
+union instruction_union {
+	struct r_type r;
+	struct i_type i;
+	struct jr_type jr;
+	struct ji_type ji;
+	struct b_type b;
+};
+
+struct instruction {
+	enum INST_TYPE type;
+	union instruction_union i;
+};
+/**/
+#endif
+
+int main(int argc, char **argv)
+{
+	int ret = 0;
+	FILE *fin = NULL;
+	FILE *fout = NULL;
+
+	if (argc < 3) {
+		fprintf(stderr, "Syntax: %s <in.asm> <out.bin>\n", argv[0]);
+		return 1;
+	}
+
+	if ((fin = fopen(argv[1], "r")) == NULL) {
+		fprintf(stderr, "Error opening %s: ", argv[1]);
+		perror("fopen");
+		return 1;
+	}
+
+	if ((fout = fopen(argv[2], "wb")) == NULL) {
+		fprintf(stderr, "Error opening %s: ", argv[2]);
+		perror("fopen");
+		return 1;
+	}
+/****/
+	struct token *tokens = NULL;
+	size_t tok_count = 0;
+
+	if ((tokens = lex(argv[1], fin, &tok_count)) == NULL)
+		return 2;
+
+	struct instruction *insts;
+	size_t insts_count;
+	struct label *labels;
+	size_t labels_count;
+	if (ret = parse(argv[1], fin, &labels, &labels_count, tokens, tok_count, &insts, &insts_count))
+		return ret;
+
+	if (ret = output(fout, labels, labels_count, insts, insts_count))
+		return ret;
+
+	return 0;
+}