[llvm-uc] [PATCH 1/4] Add UniCore calling convention
- From: Chen Wei-Ren <chenwj@xxxxxxxxxxxxxxxxx>
- To: llvm-uc@xxxxxxxxxxxxx
- Date: Fri, 30 Nov 2012 15:39:56 +0800
Add UniCore calling convention according to UniCore32-ABI-1.1.0-UC4.pdf [1].
[1] http://mprc.pku.edu.cn/~guanxuetao/linux/manual/UniCore32-ABI-1.1.0-UC4.pdf
Signed-off-by: Chen Wei-Ren <chenwj@xxxxxxxxxxxxxxxxx>
---
lib/Target/UniCore/UniCoreCallingConv.td | 42 ++++++++++++++++++++++++++++++
1 files changed, 42 insertions(+), 0 deletions(-)
create mode 100644 lib/Target/UniCore/UniCoreCallingConv.td
diff --git a/lib/Target/UniCore/UniCoreCallingConv.td
b/lib/Target/UniCore/UniCoreCallingConv.td
new file mode 100644
index 0000000..659fc59
--- /dev/null
+++ b/lib/Target/UniCore/UniCoreCallingConv.td
@@ -0,0 +1,42 @@
+//==- UniCoreCallingConv.td - Calling Conv. for UniCore -*- tablegen -*---==//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// This describes the calling conventions for UniCore architecture.
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// UniCore Return Value Calling Convention
+//===----------------------------------------------------------------------===//
+def RetCC_UniCore : CallingConv<[
+ // i32 are returned in registers A1, A2
+ CCIfType<[i32], CCAssignToReg<[A1, A1]>>
+]>;
+
+//===----------------------------------------------------------------------===//
+// UniCore Argument Calling Conventions
+//===----------------------------------------------------------------------===//
+def CC_UniCore : CallingConv<[
+ // Promote i8 arguments to i32.
+ CCIfType<[i8], CCPromoteToType<i32>>,
+ // Promote i8 arguments to i32.
+ CCIfType<[i16], CCPromoteToType<i32>>,
+
+ // The first 4 integer arguments of non-varargs functions are passed in
+ // integer registers.
+ CCIfNotVarArg<CCIfType<[i32], CCAssignToReg<[A1, A2, A3, A4]>>>,
+
+ // Integer values get stored in stack slots that are 4 bytes in
+ // size and 4-byte aligned.
+ CCIfType<[i32], CCAssignToStack<4, 4>>
+]>;
+
+//===----------------------------------------------------------------------===//
+// Callee-saved register lists.
+//===----------------------------------------------------------------------===//
+
+def CSR: CalleeSavedRegs<(add R17, R18, R19, R20, R21, R22, R23, R24, SB, SL,
FP, IP, SP, LR)>;
--
1.7.3.4
Other related posts:
- » [llvm-uc] [PATCH 1/4] Add UniCore calling convention - Chen Wei-Ren
