Add registers data table

Change the validated primitive parse_register so that it uses the data
table instead

src/data/registers.h

@@ -0,0 +1,82 @@
+#ifndef INCLUDE_DATA_REGISTERS_H_
+#define INCLUDE_DATA_REGISTERS_H_
+
+typedef enum operand_size {
+    OPERAND_SIZE_INVALID = 0,
+
+    OPERAND_SIZE_8 = 1 << 0,
+    OPERAND_SIZE_16 = 1 << 1,
+    OPERAND_SIZE_32 = 1 << 2,
+    OPERAND_SIZE_64 = 1 << 3,
+
+    OPERAND_SIZE_80 = 1 << 4,
+    OPERAND_SIZE_128 = 1 << 5,
+    OPERAND_SIZE_256 = 1 << 6,
+    OPERAND_SIZE_512 = 1 << 7,
+} operand_size_t;
+
+static inline operand_size_t bits_to_operand_size(int bits) {
+    switch (bits) {
+    case 8:
+        return OPERAND_SIZE_8;
+    case 16:
+        return OPERAND_SIZE_16;
+    case 32:
+        return OPERAND_SIZE_32;
+    case 64:
+        return OPERAND_SIZE_64;
+    case 80:
+        return OPERAND_SIZE_80;
+    case 128:
+        return OPERAND_SIZE_128;
+    case 256:
+        return OPERAND_SIZE_256;
+    case 512:
+        return OPERAND_SIZE_512;
+    default:
+        return OPERAND_SIZE_INVALID;
+    }
+}
+
+typedef enum register_id {
+    // Special registers
+    REG_RIP = -1,
+
+    // General purpose registers
+    REG_A = 0x0000,
+    REG_C,
+    REG_D,
+    REG_B,
+    REG_SP,
+    REG_BP,
+    REG_SI,
+    REG_DI,
+
+    REG_8,
+    REG_9,
+    REG_10,
+    REG_11,
+    REG_12,
+    REG_13,
+    REG_14,
+    REG_15,
+
+    REG_ST0 = 0x1000,
+    REG_ST1,
+    REG_ST2,
+    REG_ST3,
+    REG_ST4,
+    REG_ST5,
+    REG_ST6,
+    REG_ST7,
+} register_id_t;
+
+typedef struct register_data {
+    const char *name;
+    register_id_t id;
+    operand_size_t size;
+} register_data_t;
+
+extern register_data_t *const registers[];
+
+#endif // INCLUDE_DATA_REGISTERS_H_