commit ac79e4c82f201c30a06c2cd05baebd20f5b49888
author Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Mon Apr 04 17:18:19 2011 +0000
committer Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Mon Apr 04 17:18:19 2011 +0000
tree 7e7b27fc8910e9f11013439d325c37a5763f5833
parent 74a26fe099e27c60493b7493e47b1ad53ac333cd

- Implement asm parsing support for LDRSBT, LDRHT, LDRSHT and STRHT
  also fix the encoding of the later.
- Add a new encoding bit to describe the index mode used in AM3.
- Teach printAddrMode3Operand to check by the addressing mode which
  index mode to print.
- Testcases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128832 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp

diff --git a/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp b/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
index eb7e5639..f080fa8 100644
--- a/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
+++ b/lib/Target/ARM/InstPrinter/ARMInstPrinter.cpp
@@ -181,6 +181,10 @@
   }
 }
 
+//===--------------------------------------------------------------------===//
+// Addressing Mode #2
+//===--------------------------------------------------------------------===//
+
 void ARMInstPrinter::printAM2PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
                                                 raw_ostream &O) {
   const MCOperand &MO1 = MI->getOperand(Op);
@@ -276,11 +280,35 @@
     << " #" << ShImm;
 }
 
-void ARMInstPrinter::printAddrMode3Operand(const MCInst *MI, unsigned OpNum,
-                                           raw_ostream &O) {
-  const MCOperand &MO1 = MI->getOperand(OpNum);
-  const MCOperand &MO2 = MI->getOperand(OpNum+1);
-  const MCOperand &MO3 = MI->getOperand(OpNum+2);
+//===--------------------------------------------------------------------===//
+// Addressing Mode #3
+//===--------------------------------------------------------------------===//
+
+void ARMInstPrinter::printAM3PostIndexOp(const MCInst *MI, unsigned Op,
+                                         raw_ostream &O) {
+  const MCOperand &MO1 = MI->getOperand(Op);
+  const MCOperand &MO2 = MI->getOperand(Op+1);
+  const MCOperand &MO3 = MI->getOperand(Op+2);
+
+  O << "[" << getRegisterName(MO1.getReg()) << "], ";
+
+  if (MO2.getReg()) {
+    O << (char)ARM_AM::getAM3Op(MO3.getImm())
+    << getRegisterName(MO2.getReg());
+    return;
+  }
+
+  unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm());
+  O << '#'
+    << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
+    << ImmOffs;
+}
+
+void ARMInstPrinter::printAM3PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
+                                                raw_ostream &O) {
+  const MCOperand &MO1 = MI->getOperand(Op);
+  const MCOperand &MO2 = MI->getOperand(Op+1);
+  const MCOperand &MO3 = MI->getOperand(Op+2);
 
   O << '[' << getRegisterName(MO1.getReg());
 
@@ -297,6 +325,18 @@
   O << ']';
 }
 
+void ARMInstPrinter::printAddrMode3Operand(const MCInst *MI, unsigned Op,
+                                           raw_ostream &O) {
+  const MCOperand &MO3 = MI->getOperand(Op+2);
+  unsigned IdxMode = ARM_AM::getAM3IdxMode(MO3.getImm());
+
+  if (IdxMode == ARMII::IndexModePost) {
+    printAM3PostIndexOp(MI, Op, O);
+    return;
+  }
+  printAM3PreOrOffsetIndexOp(MI, Op, O);
+}
+
 void ARMInstPrinter::printAddrMode3OffsetOperand(const MCInst *MI,
                                                  unsigned OpNum,
                                                  raw_ostream &O) {