From: Bradley Smith <bradley.smith@arm.com>
Date: Wed, 9 Apr 2014 14:42:56 +0000 (+0000)
Subject: [ARM64] Use PStateMapper to ensure that MSRcpsr operands are validated during disasse... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=dcb9231b8aee77c4b63dc6d5affb02cf9535a8ed

[ARM64] Use PStateMapper to ensure that MSRcpsr operands are validated during disassembly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205873 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp b/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp
index 3712d2256ec..667603ca0c3 100644
--- a/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp
+++ b/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp
@@ -1579,10 +1579,15 @@ static DecodeStatus DecodeSystemCPSRInstruction(llvm::MCInst &Inst,
   uint64_t op2 = fieldFromInstruction(insn, 5, 3);
   uint64_t crm = fieldFromInstruction(insn, 8, 4);
 
-  Inst.addOperand(MCOperand::CreateImm((op1 << 3) | op2));
+  uint64_t cpsr_field = (op1 << 3) | op2;
+
+  Inst.addOperand(MCOperand::CreateImm(cpsr_field));
   Inst.addOperand(MCOperand::CreateImm(crm));
 
-  return Success;
+  bool ValidNamed;
+  (void)ARM64PState::PStateMapper().toString(cpsr_field, ValidNamed);
+  
+  return ValidNamed ? Success : Fail;
 }
 
 static DecodeStatus DecodeTestAndBranch(llvm::MCInst &Inst, uint32_t insn,