From 7436513b6449e8bce78e2c3d5b90c1bc30d2f97e Mon Sep 17 00:00:00 2001
From: lyken <lyken@m-labs.hk>
Date: Tue, 30 Jul 2024 15:19:45 +0800
Subject: [PATCH] core/model: add util.rs & gen_model_memcpy

---
 nac3core/src/codegen/model/mod.rs  |  1 +
 nac3core/src/codegen/model/util.rs | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 nac3core/src/codegen/model/util.rs

diff --git a/nac3core/src/codegen/model/mod.rs b/nac3core/src/codegen/model/mod.rs
index 78da8048..e7b5d9fe 100644
--- a/nac3core/src/codegen/model/mod.rs
+++ b/nac3core/src/codegen/model/mod.rs
@@ -3,6 +3,7 @@ mod int;
 mod ptr;
 mod slice;
 mod structure;
+pub mod util;
 
 pub use core::*;
 pub use int::*;
diff --git a/nac3core/src/codegen/model/util.rs b/nac3core/src/codegen/model/util.rs
new file mode 100644
index 00000000..5306c0fd
--- /dev/null
+++ b/nac3core/src/codegen/model/util.rs
@@ -0,0 +1,23 @@
+use inkwell::{types::BasicType, values::IntValue};
+
+use crate::codegen::{llvm_intrinsics::call_memcpy_generic, CodeGenContext};
+
+use super::*;
+
+pub fn gen_model_memcpy<'ctx, M: Model>(
+    tyctx: TypeContext<'ctx>,
+    ctx: &CodeGenContext<'ctx, '_>,
+    dst: Ptr<'ctx, M>,
+    src: Ptr<'ctx, M>,
+    num_elements: IntValue<'ctx>,
+    volatile: bool,
+) {
+    let bool_model = IntModel(Bool);
+
+    let itemsize = M::default().get_type(tyctx, ctx.ctx).size_of().unwrap();
+    let totalsize =
+        ctx.builder.build_int_mul(itemsize, num_elements, "model_memcpy_totalsize").unwrap();
+    let is_volatile = bool_model.constant(tyctx, ctx.ctx, u64::from(volatile));
+
+    call_memcpy_generic(ctx, dst.value, src.value, totalsize, is_volatile.value);
+}