Add table of instructions and their encodings

1 files changed, 64 insertions, 0 deletions

diff --git a/mnemonics.h b/mnemonics.h
new file mode 100644
index 0000000..969926e
--- /dev/null
+++ b/mnemonics.h
@@ -0,0 +1,64 @@
+#ifndef NQ_MNEMONICS_H
+#define NQ_MNEMONICS_H
+
+#include <stdint.h>
+
+/* operand types */
+#define REG      1
+#define REGPTR   2
+#define IMM      3
+#define PCOFF    4
+
+enum {
+	MNEM_ADD,
+	MNEM_SUB,
+	MNEM_MUL,
+	MNEM_DIV,
+	MNEM_AND,
+	MNEM_OR,
+	MNEM_XOR,
+	MNEM_LSL,
+	MNEM_LSR,
+	MNEM_ASL,
+	MNEM_ASR,
+	MNEM_ROL,
+	MNEM_ROR,
+	MNEM_NOT,
+	MNEM_NEG,
+	MNEM_BTC,
+	MNEM_BTS,
+	MNEM_MOV,
+	MNEM_ST_B,
+	MNEM_ST_W,
+	MNEM_LD_BL,
+	MNEM_LD_BH,
+	MNEM_LD_W,
+	MNEM_LDI_BL,
+	MNEM_LDI_BH,
+	MNEM_BEQ,
+	MNEM_BNE,
+	MNEM_BGT,
+	MNEM_BGE,
+	MNEM_BLT,
+	MNEM_BLE,
+	MNEM_BRA,
+	MNEM_JMP,
+	MNEM_ADDPC,
+	MNEM_NOP,
+};
+
+struct operand {
+	uint8_t type;
+	uint8_t shift;
+};
+
+struct mnemonic {
+	const char *mnem;
+	uint16_t    bits;
+	struct operand operands[3];
+};
+
+extern const struct mnemonic mnemonics[];
+
+#endif
+