2 files changed, 61 insertions, 0 deletions
diff --git a/include/bytecode.h b/include/bytecode.h
new file mode 100644
index 0000000..4a14b8d
--- /dev/null
+++ b/include/bytecode.h
@@ -0,0 +1,40 @@
+#ifndef TSL_BYTECODE_H
+#define TSL_BYTECODE_H
+
+#include "std/buffer.h"
+#include <stdint.h>
+
+/*
+    All instructions are 4 bytes in size.
+*/
+
+typedef uint8_t TslOpcodeType;
+typedef uint8_t TslRegister;
+typedef uint16_t TslValueIndex;
+
+typedef enum {
+    TSL_OPCODE_ASSIGN
+} TslOpcode;
+
+typedef struct {
+    TslBuffer buffer;
+} TslBytecodeWriter;
+
+typedef struct {
+    TslOpcodeType opcode;
+    union {
+        TslRegister dst_reg;
+        TslRegister src_reg;
+    } type1;
+    union {
+        TslRegister dst_reg;
+        TslValueIndex value_index;
+    } type2;
+} TslInstruction;
+
+void tsl_bytecode_writer_init(TslBytecodeWriter *self);
+void tsl_bytecode_writer_deinit(TslBytecodeWriter *self);
+
+int tsl_bytecode_writer_assign(TslBytecodeWriter *self, TslRegister reg, double value);
+
+#endif /* TSL_BYTECODE_H */
diff --git a/include/std/buffer.h b/include/std/buffer.h
new file mode 100644
index 0000000..dea7dbd
--- /dev/null
+++ b/include/std/buffer.h
@@ -0,0 +1,21 @@
+#ifndef TSL_BUFFER_H
+#define TSL_BUFFER_H
+
+#include <stddef.h>
+
+/*
+    TODO: Optimize small size buffers by using data and size members (16 bytes on x86)
+    instead of heap allocation
+*/
+typedef struct {
+    void *data;
+    size_t size;
+    size_t capacity;
+} TslBuffer;
+
+void tsl_buffer_init(TslBuffer *self);
+void tsl_buffer_deinit(TslBuffer *self);
+
+int tsl_buffer_append(TslBuffer *self, void *data, size_t size);
+
+#endif /* TSL_BUFFER_H */