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| author | Jim Grosbach <grosbach@apple.com> | 2011-09-09 18:37:27 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-09-09 18:37:27 +0000 |
| commit | b6aed508e310e31dcb080e761ca856127cec0773 (patch) | |
| tree | 2be8703cda03b07e8b3448b0a072b15e1f222f3a /lib/Target/ARM/Disassembler/ARMDisassembler.cpp | |
| parent | 1ab7c8ea03d52c6fdae6fe0efae57a36c2f701c3 (diff) | |
Thumb2 assembly parsing and encoding for LDREX/LDREXB/LDREXD/LDREXH.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139381 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/Disassembler/ARMDisassembler.cpp')
| -rw-r--r-- | lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index 2791350b73..8a081f368e 100644 --- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -269,6 +269,8 @@ static DecodeStatus DecodeT2Imm8S4(llvm::MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); static DecodeStatus DecodeT2AddrModeImm8s4(llvm::MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); +static DecodeStatus DecodeT2AddrModeImm0_1020s4(llvm::MCInst &Inst,unsigned Val, + uint64_t Address, const void *Decoder); static DecodeStatus DecodeT2Imm8(llvm::MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder); static DecodeStatus DecodeT2AddrModeImm8(llvm::MCInst &Inst, unsigned Val, @@ -2669,6 +2671,21 @@ static DecodeStatus DecodeT2AddrModeImm8s4(llvm::MCInst &Inst, unsigned Val, return S; } +static DecodeStatus DecodeT2AddrModeImm0_1020s4(llvm::MCInst &Inst,unsigned Val, + uint64_t Address, const void *Decoder) { + DecodeStatus S = MCDisassembler::Success; + + unsigned Rn = fieldFromInstruction32(Val, 8, 4); + unsigned imm = fieldFromInstruction32(Val, 0, 8); + + if (!Check(S, DecodeGPRnopcRegisterClass(Inst, Rn, Address, Decoder))) + return MCDisassembler::Fail; + + Inst.addOperand(MCOperand::CreateImm(imm)); + + return S; +} + static DecodeStatus DecodeT2Imm8(llvm::MCInst &Inst, unsigned Val, uint64_t Address, const void *Decoder) { int imm = Val & 0xFF; |