AArch64 port

This commit adds a back-end for the AArch64 architecture, namely ARMv8
in 64-bit mode.

1 files changed, 72 insertions, 0 deletions

diff --git a/aarch64/CBuiltins.ml b/aarch64/CBuiltins.ml
new file mode 100644
index 00000000..fdc1372d
--- /dev/null
+++ b/aarch64/CBuiltins.ml
@@ -0,0 +1,72 @@
+(* *********************************************************************)
+(*                                                                     *)
+(*              The Compcert verified compiler                         *)
+(*                                                                     *)
+(*         Xavier Leroy, Collège de France and INRIA Paris             *)
+(*                                                                     *)
+(*  Copyright Institut National de Recherche en Informatique et en     *)
+(*  Automatique.  All rights reserved.  This file is distributed       *)
+(*  under the terms of the INRIA Non-Commercial License Agreement.     *)
+(*                                                                     *)
+(* *********************************************************************)
+
+(* Processor-dependent builtin C functions *)
+
+open C
+
+(* va_list is a struct of size 32 and alignment 8, passed by reference *)
+
+let va_list_type = TArray(TInt(IULong, []), Some 4L, [])
+let size_va_list = 32
+let va_list_scalar = false
+
+let builtins = {
+  builtin_typedefs = [
+    "__builtin_va_list", va_list_type
+  ];
+  builtin_functions = [
+    (* Synchronization *)
+    "__builtin_fence",
+      (TVoid [], [], false);
+    (* Integer arithmetic *)
+    "__builtin_bswap64",
+      (TInt(IULongLong, []), [TInt(IULongLong, [])], false);
+    "__builtin_clz",
+      (TInt(IInt, []), [TInt(IUInt, [])], false);
+    "__builtin_clzl",
+      (TInt(IInt, []), [TInt(IULong, [])], false);
+    "__builtin_clzll",
+      (TInt(IInt, []), [TInt(IULongLong, [])], false);
+    "__builtin_cls",
+      (TInt(IInt, []), [TInt(IInt, [])], false);
+    "__builtin_clsl",
+      (TInt(IInt, []), [TInt(ILong, [])], false);
+    "__builtin_clsll",
+      (TInt(IInt, []), [TInt(ILongLong, [])], false);
+    (* Float arithmetic *)
+    "__builtin_fmadd",
+      (TFloat(FDouble, []),
+       [TFloat(FDouble, []); TFloat(FDouble, []); TFloat(FDouble, [])],
+       false);
+    "__builtin_fmsub",
+      (TFloat(FDouble, []),
+       [TFloat(FDouble, []); TFloat(FDouble, []); TFloat(FDouble, [])],
+       false);
+    "__builtin_fnmadd",
+      (TFloat(FDouble, []),
+       [TFloat(FDouble, []); TFloat(FDouble, []); TFloat(FDouble, [])],
+       false);
+    "__builtin_fnmsub",
+      (TFloat(FDouble, []),
+       [TFloat(FDouble, []); TFloat(FDouble, []); TFloat(FDouble, [])],
+       false);
+    "__builtin_fmax",
+      (TFloat(FDouble, []), [TFloat(FDouble, []); TFloat(FDouble, [])], false);
+    "__builtin_fmin",
+      (TFloat(FDouble, []), [TFloat(FDouble, []); TFloat(FDouble, [])], false);
+  ]
+}
+
+(* Expand memory references inside extended asm statements.  Used in C2C. *)
+
+let asm_mem_argument arg = Printf.sprintf "[%s]" arg