From dfc519d9f0775025ec3db7253af3cd7c3012d96a Mon Sep 17 00:00:00 2001
From: Yann Herklotz <git@yannherklotz.com>
Date: Sun, 22 Mar 2020 20:35:11 +0000
Subject: Create intermediate VTL language

---
 src/verilog/VTL.v | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 src/verilog/VTL.v

diff --git a/src/verilog/VTL.v b/src/verilog/VTL.v
new file mode 100644
index 0000000..7273f96
--- /dev/null
+++ b/src/verilog/VTL.v
@@ -0,0 +1,63 @@
+From coqup.common Require Import Coquplib.
+
+From compcert Require Op Maps.
+From compcert Require AST Memory Registers.
+
+Definition node := positive.
+
+Definition reg := Registers.reg.
+
+Inductive instruction : Type :=
+| Vnop : node -> instruction
+| Vnonblock : Op.operation -> list reg -> reg -> node -> instruction
+| Vload : AST.memory_chunk -> Op.addressing -> list reg -> reg -> node -> instruction
+| Vstore : AST.memory_chunk -> Op.addressing -> list reg -> reg -> node -> instruction
+| Vinst : AST.signature -> reg + AST.ident -> list reg -> reg -> node -> instruction
+| Vtailinst : AST.signature -> reg + AST.ident -> list reg -> instruction
+| Vcond : Op.condition -> list reg -> node -> node -> instruction
+| Vjumptable : reg -> list node -> instruction
+| Vfinish : option reg -> instruction.
+
+Definition code : Type := Maps.PTree.t instruction.
+
+(** Function declaration for VTL also contain a construction which describes the
+    functions that are called in the current function. This information is used
+    to print out *)
+Record function : Type :=
+  mkfunction {
+      fn_sig : AST.signature;
+      fn_params : list reg;
+      fn_stacksize : Z;
+      fn_code : code;
+      fn_entrypoint : node;
+      fn_calledfuns : list AST.ident
+    }.
+
+Definition fundef := AST.fundef function.
+
+Definition design := AST.program fundef unit.
+
+Definition funsig (fd : fundef) :=
+  match fd with
+  | AST.Internal f => fn_sig f
+  | AST.External ef => AST.ef_sig ef
+  end.
+
+(** Describes the transformation of VTL instruction by instruction. This applies
+    the transformation to each instruction in the function and returns the new
+    function with the modified instructions. *)
+Section TRANSF.
+
+  Variable transf : node -> instruction -> instruction.
+
+  Definition transf_function (f : function) : function :=
+    mkfunction
+      f.(fn_sig)
+      f.(fn_params)
+      f.(fn_stacksize)
+      (Maps.PTree.map transf f.(fn_code))
+      f.(fn_entrypoint)
+      f.(fn_calledfuns).
+
+End TRANSF.
+
-- 
cgit