Add initial rough outline

1 files changed, 82 insertions, 0 deletions

diff --git a/tpu.h b/tpu.h
new file mode 100644
index 0000000..702ccfc
--- /dev/null
+++ b/tpu.h
@@ -0,0 +1,82 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#define TPU_MAP_BUCKETS 64
+
+enum tpu_mode {
+	MODE_IDLE, MODE_RUN, MODE_READ, MODE_WRITE
+};
+
+enum tpu_inst_type {
+	INST_NOP, INST_MOV, INST_SWP, INST_SAV,
+	INST_ADD, INST_SUB, INST_NEG, INST_JMP,
+	INST_JEZ, INST_JNZ, INST_JLZ, INST_JRO
+};
+
+enum tpu_inst_op_type {
+	OP_LIT, OP_UP, OP_DOWN, OP_LEFT, OP_RIGHT,
+	OP_ACC, OP_BAK, OP_NIL, OP_ANY, OP_LAST
+};
+
+enum tpu_port_dir {
+	DIR_UP, DIR_RIGHT, DIR_DOWN, DIR_LEFT
+};
+
+enum tpu_port_type {
+	PORT_IN = 0b01, PORT_OUT = 0b10, PORT_BIDI = 0b11
+};
+
+struct tpu_inst_op {
+	enum tpu_inst_op_type type;
+	uint8_t lit;
+};
+
+struct tpu_inst {
+	enum tpu_inst_type type;
+	struct tpu_inst_op ops[2];
+};
+
+struct tpu_port {
+	struct tpu *dst_tpu;
+	enum tpu_port_type type;
+	struct tpu_port *dst_port;
+	bool write, read;
+	uint8_t val;
+};
+
+struct tpu {
+	struct tpu_port ports[4];
+	uint8_t acc, bak;
+	int x, y;
+
+	size_t pc;
+	struct inst *inst;
+	size_t inst_cap;
+	size_t inst_cnp;
+
+};
+
+struct tpu_map_link {
+	size_t x, y;
+	struct tpu *tpu;
+	struct tpu_map_link *next;
+};
+
+struct tpu_map {
+	struct tpu_map_link *buckets[TPU_MAP_BUCKETS];
+};
+
+void tpu_init(struct tpu *tpu);
+void tpu_add_inst(struct tpu *tpu, enum tpu_inst_type inst,
+	int op1, uint8_t op1_lit, int op2, uint8_t op2_lit);
+void tpu_step(struct tpu *tpu, uint8_t *up, uint8_t *right,
+	uint8_t *down, uint8_t *left);
+void tpu_deinit(struct tpu *tpu);
+
+void tpu_map_init(struct tpu_map *map);
+void tpu_map_add(struct tpu_map *map, struct tpu *tpu);
+struct tpu *tpu_map_get(int x, int y);
+void tpu_map_deinit(struct tpu_map *map);