From 300219dc8519720a36525c7b40c6a327580fe0bd Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sun, 15 Nov 2020 22:05:14 +0100
Subject: Evaluation (WIP)

---
 asm/intel64/encode.cpp | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

(limited to 'asm/intel64/encode.cpp')

diff --git a/asm/intel64/encode.cpp b/asm/intel64/encode.cpp
index 03a7897..681e407 100644
--- a/asm/intel64/encode.cpp
+++ b/asm/intel64/encode.cpp
@@ -47,7 +47,19 @@ void Asm::toMachineCode(const FlowGraph::Graph& graph, Segment& segment)
     FlowGraph::BinaryOperation& op {dynamic_cast<FlowGraph::BinaryOperation&>(*node)};
 
     auto operands {op.operands()};
-    // TODO: ignore destination (0) for now
+
+#if 0
+    if (op.type() == FlowGraph::BinaryOperationType::Add) {
+     segment.push_back(loadmakeOp("add", Asm::Args{{Asm::Args::Register32("eax"), Asm::Args::Immediate32(immediate2)}}));
+    } else if (op.type() == FlowGraph::BinaryOperationType::Multiply) {
+     segment.push_back(makeOp("mov", Asm::Args{{Asm::Args::Register32("ebx"), Asm::Args::Immediate32(immediate2)}}));
+     segment.push_back(makeOp("mul", Asm::Args{{Asm::Args::Register32("ebx")}}));
+    } else
+     throw std::runtime_error("ICE: Asm: Unsupported binary operation type: "s + std::to_string(static_cast<int>(op.type())));
+#endif
+
+
+
 
     if (operands[1].type() != FlowGraph::DataType::Int) {
      std::runtime_error("Bad type for operand 1: "s + std::to_string(int(operands[1].type())));
@@ -83,11 +95,11 @@ void Asm::toMachineCode(const FlowGraph::Graph& graph, Segment& segment)
     } catch (const std::bad_cast& ex) {
      std::runtime_error("Bad value for operand 2: Constant expected");
     }
-
-    segment.push_back(makeOp("mov", Asm::Args{{Asm::Args::Register32("edi"), Asm::Args::Immediate32(immediate1)}}));
     
+    segment.push_back(makeOp("mov", Asm::Args{{Asm::Args::Register32("eax"), Asm::Args::Immediate32(immediate1)}}));
+
     if (op.type() == FlowGraph::BinaryOperationType::Add) {
-     segment.push_back(makeOp("add", Asm::Args{{Asm::Args::Register32("edi"), Asm::Args::Immediate32(immediate2)}}));
+     segment.push_back(makeOp("add", Asm::Args{{Asm::Args::Register32("eax"), Asm::Args::Immediate32(immediate2)}}));
     } else if (op.type() == FlowGraph::BinaryOperationType::Multiply) {
      segment.push_back(makeOp("mov", Asm::Args{{Asm::Args::Register32("ebx"), Asm::Args::Immediate32(immediate2)}}));
      segment.push_back(makeOp("mul", Asm::Args{{Asm::Args::Register32("ebx")}}));
@@ -103,7 +115,7 @@ void Asm::toMachineCode(const FlowGraph::Graph& graph, Segment& segment)
     //FlowGraph::DestroyScopeOp& op {dynamic_cast<FlowGraph::DestroyScopeOp&>(*node)};
     segment.push_back(makeOp("pop", Asm::Args{{Asm::Args::Register64("rbp")}}));
 
-    // Move 
+    // Move eax for exit() via rdi
     segment.push_back(makeOp("xor", Asm::Args{{Asm::Args::Register64("rdi"), Asm::Args::Register64("rdi")}}));
     segment.push_back(makeOp("mov", Asm::Args{{Asm::Args::Register32("edi"), Asm::Args::Register32("eax")}}));
    } else if (typeid(node_deref) == typeid(FlowGraph::DataNode)) {
-- 
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