1 files changed, 64 insertions, 0 deletions
diff --git a/src/vm.h b/src/vm.h
new file mode 100644
index 0000000..2e9e487
--- /dev/null
+++ b/src/vm.h
@@ -0,0 +1,64 @@
+#ifndef VM_H
+#define VM_H
+#include "stack.h"
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(program[0]))
+#define STACK_CAPACITY 1024
+#define HEAP_CAPACITY 1024
+
+typedef enum inst_type {
+	// stack
+	INST_PUSH,
+	INST_DUP,
+	INST_COPY,
+	INST_SWAP,
+	INST_DROP,
+	INST_SLIDE,
+	// arithmetics
+	INST_ADD,
+	INST_SUB,
+	INST_MUL,
+	INST_DIV,
+	INST_MOD,
+	// heap access
+	INST_STORE,
+	INST_LOAD,
+	// Flow control
+	INST_CALL,
+	INST_RET,
+	INST_LABEL,
+	INST_JMP,
+	INST_JMPZ,
+	INST_JMPN,
+	// I/O
+	INST_PRINTI,
+	INST_PRINTC,
+	INST_READI,
+	INST_READC,
+	INST_END,
+} inst_type_t;
+
+typedef struct instr {
+	inst_type_t type;
+	int operand;
+} inst_t;
+
+typedef struct label {
+	int name;
+	int index;
+} label_t;
+
+typedef struct vm {
+	stack_t stack;
+	stack_t call_stack;
+	int *heap;
+	label_t *labels;
+} vm_t;
+
+void
+vm_init(vm_t *vm);
+
+void
+vm_run(vm_t *vm, inst_t *insts);
+
+#endif /* VM_H */