break code into separate files

1 files changed, 64 insertions, 0 deletions

diff --git a/llvm.cpp b/llvm.cpp
new file mode 100644
index 0000000..fc56d9e
--- /dev/null
+++ b/llvm.cpp
@@ -0,0 +1,64 @@
+#include "llvm.hpp"
+
+LLVMState::LLVMState():
+    ctx(),
+    modul("forsp", ctx),
+    builder(ctx),
+    inttype(llvm::Type::getInt32Ty(ctx)),
+    stacktype(llvm::VectorType::get(inttype, 12, false)),
+    ftype(llvm::FunctionType::get(llvm::Type::getVoidTy(ctx), {}, false)),
+    one(llvm::ConstantInt::get(inttype, 1)),
+    zero(llvm::ConstantInt::get(inttype, 0))
+{
+    auto zerovec = llvm::ConstantVector::get(llvm::ArrayRef(zero));
+    llvmSp = new llvm::GlobalVariable(modul, inttype, false,
+        llvm::GlobalValue::ExternalLinkage, zero, "sp");
+    llvmStack = new llvm::GlobalVariable(modul, stacktype, false,
+        llvm::GlobalValue::ExternalLinkage, zerovec, "stack");
+}
+
+llvm::Value *LLVMState::createPush()
+{
+    auto dspval = builder.CreateLoad(inttype, llvmSp);
+    auto inc = builder.CreateAdd(dspval, one);
+    builder.CreateStore(inc, llvmSp, false);
+
+    return builder.CreateGEP(stacktype, llvmStack, {zero, dspval});
+}
+
+llvm::Value *LLVMState::createPop()
+{
+    auto dspval = builder.CreateLoad(inttype, llvmSp);
+    auto dec = builder.CreateSub(dspval, one);
+    builder.CreateStore(dec, llvmSp, false);
+
+    return builder.CreateGEP(stacktype, llvmStack, {zero, dec});
+}
+
+llvm::Function *LLVMState::createFunction(const std::string& name)
+{
+    return llvm::Function::Create(ftype, llvm::Function::ExternalLinkage,
+        name.c_str(), modul);
+}
+
+llvm::BasicBlock *LLVMState::createEntry(llvm::Function *func)
+{
+    return llvm::BasicBlock::Create(ctx, "entry", func);
+}
+
+llvm::Value *LLVMState::createVariable(const std::string& name)
+{
+    return new llvm::GlobalVariable(modul, inttype, false,
+        llvm::GlobalValue::InternalLinkage, zero, name);
+}
+
+llvm::Constant *LLVMState::createInt(int n)
+{
+    return llvm::ConstantInt::get(ctx, llvm::APInt(32, n, true));
+}
+
+void LLVMState::output()
+{
+    //std::cout << "LLVM:" << std::endl;
+    modul.print(llvm::errs(), nullptr);
+}