From 5acb3de8b7cfd5a104722526b731a3c87bb1a46e Mon Sep 17 00:00:00 2001
From: Jim Grosbach <grosbach@apple.com>
Date: Mon, 27 Sep 2010 21:47:04 +0000
Subject: [PATCH] ARM-mode eh.sjlj.longjmp MC lowering

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114896 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/ARMAsmPrinter.cpp | 54 ++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index ae0b33d468a..6e7cdc89ebe 100644
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -1920,6 +1920,60 @@ void ARMAsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) {
     }
     return;
   }
+  case ARM::Int_eh_sjlj_longjmp: {
+    // ldr sp, [$src, #8]
+    // ldr $scratch, [$src, #4]
+    // ldr r7, [$src]
+    // bx $scratch
+    unsigned SrcReg = MI->getOperand(0).getReg();
+    unsigned ScratchReg = MI->getOperand(1).getReg();
+    {
+      MCInst TmpInst;
+      TmpInst.setOpcode(ARM::LDR);
+      TmpInst.addOperand(MCOperand::CreateReg(ARM::SP));
+      TmpInst.addOperand(MCOperand::CreateReg(SrcReg));
+      TmpInst.addOperand(MCOperand::CreateReg(0));
+      TmpInst.addOperand(MCOperand::CreateImm(8));
+      // Predicate.
+      TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
+      TmpInst.addOperand(MCOperand::CreateReg(0));
+      OutStreamer.EmitInstruction(TmpInst);
+    }
+    {
+      MCInst TmpInst;
+      TmpInst.setOpcode(ARM::LDR);
+      TmpInst.addOperand(MCOperand::CreateReg(ScratchReg));
+      TmpInst.addOperand(MCOperand::CreateReg(SrcReg));
+      TmpInst.addOperand(MCOperand::CreateReg(0));
+      TmpInst.addOperand(MCOperand::CreateImm(4));
+      // Predicate.
+      TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
+      TmpInst.addOperand(MCOperand::CreateReg(0));
+      OutStreamer.EmitInstruction(TmpInst);
+    }
+    {
+      MCInst TmpInst;
+      TmpInst.setOpcode(ARM::LDR);
+      TmpInst.addOperand(MCOperand::CreateReg(ARM::R7));
+      TmpInst.addOperand(MCOperand::CreateReg(SrcReg));
+      TmpInst.addOperand(MCOperand::CreateReg(0));
+      TmpInst.addOperand(MCOperand::CreateImm(0));
+      // Predicate.
+      TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
+      TmpInst.addOperand(MCOperand::CreateReg(0));
+      OutStreamer.EmitInstruction(TmpInst);
+    }
+    {
+      MCInst TmpInst;
+      TmpInst.setOpcode(ARM::BRIND);
+      TmpInst.addOperand(MCOperand::CreateReg(ScratchReg));
+      // Predicate.
+      TmpInst.addOperand(MCOperand::CreateImm(ARMCC::AL));
+      TmpInst.addOperand(MCOperand::CreateReg(0));
+      OutStreamer.EmitInstruction(TmpInst);
+    }
+    return;
+  }
   }
 
   MCInst TmpInst;