split eval systems, to decouple types/exprs/parsing (debug info dependent), from irization (macro map dependent), from interpretation (completely independent of the former two stages & all their dependencies)

src/eval/eval_interpret.h

@@ -0,0 +1,63 @@
+// Copyright (c) 2024 Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#ifndef EVAL_INTERPRET_H
+#define EVAL_INTERPRET_H
+
+////////////////////////////////
+//~ rjf: Bytecode Interpretation Types
+
+typedef union E_Value E_Value;
+union E_Value
+{
+  U64 u512[8];
+  U64 u256[4];
+  U64 u128[2];
+  U64 u64;
+  S64 s64;
+  F64 f64;
+  F32 f32;
+};
+
+typedef struct E_Interpretation E_Interpretation;
+struct E_Interpretation
+{
+  E_Value value;
+  E_InterpretationCode code;
+};
+
+////////////////////////////////
+//~ rjf: Interpretation Context
+
+typedef B32 E_MemoryReadFunction(void *user_data, void *out, Rng1U64 vaddr_range);
+
+typedef struct E_InterpretCtx E_InterpretCtx;
+struct E_InterpretCtx
+{
+  Architecture arch;
+  void *memory_read_user_data;
+  E_MemoryReadFunction *memory_read;
+  void *reg_data;
+  U64 reg_size;
+  U64 *module_base;
+  U64 *frame_base;
+  U64 *tls_base;
+};
+
+////////////////////////////////
+//~ rjf: Globals
+
+thread_static E_InterpretCtx *e_interpret_ctx = 0;
+
+////////////////////////////////
+//~ rjf: Context Selection Functions (Selection Required For All Subsequent APIs)
+
+internal E_InterpretCtx *e_selected_interpret_ctx(void);
+internal void e_select_interpret_ctx(E_InterpretCtx *ctx);
+
+////////////////////////////////
+//~ rjf: Interpretation Functions
+
+internal E_Interpretation e_interpret(String8 bytecode);
+
+#endif //EVAL_INTERPRET_H