From 2d48a7b4d0666ad16d03a22d85712617a0849046 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sat, 9 Jan 2021 03:30:07 -0300
Subject: shader: Initial recompiler work

---
 .../frontend/maxwell/translate/translate.cpp       | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/shader_recompiler/frontend/maxwell/translate/translate.cpp

(limited to 'src/shader_recompiler/frontend/maxwell/translate/translate.cpp')

diff --git a/src/shader_recompiler/frontend/maxwell/translate/translate.cpp b/src/shader_recompiler/frontend/maxwell/translate/translate.cpp
new file mode 100644
index 000000000..66a306745
--- /dev/null
+++ b/src/shader_recompiler/frontend/maxwell/translate/translate.cpp
@@ -0,0 +1,50 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "shader_recompiler/environment.h"
+#include "shader_recompiler/frontend/ir/basic_block.h"
+#include "shader_recompiler/frontend/maxwell/decode.h"
+#include "shader_recompiler/frontend/maxwell/location.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
+#include "shader_recompiler/frontend/maxwell/translate/translate.h"
+
+namespace Shader::Maxwell {
+
+template <auto visitor_method>
+static void Invoke(TranslatorVisitor& visitor, Location pc, u64 insn) {
+    using MethodType = decltype(visitor_method);
+    if constexpr (std::is_invocable_r_v<void, MethodType, TranslatorVisitor&, Location, u64>) {
+        (visitor.*visitor_method)(pc, insn);
+    } else if constexpr (std::is_invocable_r_v<void, MethodType, TranslatorVisitor&, u64>) {
+        (visitor.*visitor_method)(insn);
+    } else {
+        (visitor.*visitor_method)();
+    }
+}
+
+IR::Block Translate(Environment& env, const Flow::Block& flow_block) {
+    IR::Block block{flow_block.begin.Offset(), flow_block.end.Offset()};
+    TranslatorVisitor visitor{env, block};
+
+    const Location pc_end{flow_block.end};
+    Location pc{flow_block.begin};
+    while (pc != pc_end) {
+        const u64 insn{env.ReadInstruction(pc.Offset())};
+        const Opcode opcode{Decode(insn)};
+        switch (opcode) {
+#define INST(name, cute, mask)                                                                     \
+    case Opcode::name:                                                                             \
+        Invoke<&TranslatorVisitor::name>(visitor, pc, insn);                                       \
+        break;
+#include "shader_recompiler/frontend/maxwell/maxwell.inc"
+#undef OPCODE
+        default:
+            throw LogicError("Invalid opcode {}", opcode);
+        }
+        ++pc;
+    }
+    return block;
+}
+
+} // namespace Shader::Maxwell
-- 
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