1 files changed, 41 insertions, 0 deletions
diff --git a/lib/Target/BPF/BPFRegisterInfo.td b/lib/Target/BPF/BPFRegisterInfo.td
new file mode 100644
index 0000000..c8e24f8
--- /dev/null
+++ b/lib/Target/BPF/BPFRegisterInfo.td
@@ -0,0 +1,41 @@
+//===-- BPFRegisterInfo.td - BPF Register defs -------------*- tablegen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+//  Declarations that describe the BPF register file
+//===----------------------------------------------------------------------===//
+
+// Registers are identified with 4-bit ID numbers.
+// Ri - 64-bit integer registers
+class Ri<bits<16> Enc, string n> : Register<n> {
+  let Namespace = "BPF";
+  let HWEncoding = Enc;
+}
+
+// Integer registers
+def R0 : Ri< 0, "r0">, DwarfRegNum<[0]>;
+def R1 : Ri< 1, "r1">, DwarfRegNum<[1]>;
+def R2 : Ri< 2, "r2">, DwarfRegNum<[2]>;
+def R3 : Ri< 3, "r3">, DwarfRegNum<[3]>;
+def R4 : Ri< 4, "r4">, DwarfRegNum<[4]>;
+def R5 : Ri< 5, "r5">, DwarfRegNum<[5]>;
+def R6 : Ri< 6, "r6">, DwarfRegNum<[6]>;
+def R7 : Ri< 7, "r7">, DwarfRegNum<[7]>;
+def R8 : Ri< 8, "r8">, DwarfRegNum<[8]>;
+def R9 : Ri< 9, "r9">, DwarfRegNum<[9]>;
+def R10 : Ri<10, "r10">, DwarfRegNum<[10]>;
+def R11 : Ri<11, "r11">, DwarfRegNum<[11]>;
+
+// Register classes.
+def GPR : RegisterClass<"BPF", [i64], 64, (add R1, R2, R3, R4, R5,
+                                           R6, R7, R8, R9, // callee saved
+                                           R0,  // return value
+                                           R11, // stack ptr
+                                           R10  // frame ptr
+                                          )>;