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| author | Jim Grosbach <grosbach@apple.com> | 2011-08-19 18:55:51 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-08-19 18:55:51 +0000 |
| commit | 38466309d5c8ce408f05567fa47aeaa3b5826080 (patch) | |
| tree | b5eec344271192adc55a51116048337462e816d7 /lib/Target/ARM/AsmParser/ARMAsmParser.cpp | |
| parent | 48ff5ffe9e2a90f853ce3645b1b97ea7885eccf1 (diff) | |
| download | external_llvm-38466309d5c8ce408f05567fa47aeaa3b5826080.zip external_llvm-38466309d5c8ce408f05567fa47aeaa3b5826080.tar.gz external_llvm-38466309d5c8ce408f05567fa47aeaa3b5826080.tar.bz2 | |
Thumb assembly parsing and encoding for LDRH.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138060 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/AsmParser/ARMAsmParser.cpp')
| -rw-r--r-- | lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index d04b9b7..60f16f8 100644 --- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -628,6 +628,15 @@ public: int64_t Val = Mem.OffsetImm->getValue(); return Val >= 0 && Val <= 124 && (Val % 4) == 0; } + bool isMemThumbRIs2() const { + if (Kind != Memory || Mem.OffsetRegNum != 0 || + !isARMLowRegister(Mem.BaseRegNum)) + return false; + // Immediate offset, multiple of 4 in range [0, 62]. + if (!Mem.OffsetImm) return true; + int64_t Val = Mem.OffsetImm->getValue(); + return Val >= 0 && Val <= 62 && (Val % 2) == 0; + } bool isMemThumbRIs1() const { if (Kind != Memory || Mem.OffsetRegNum != 0 || !isARMLowRegister(Mem.BaseRegNum)) @@ -1009,6 +1018,13 @@ public: Inst.addOperand(MCOperand::CreateImm(Val)); } + void addMemThumbRIs2Operands(MCInst &Inst, unsigned N) const { + assert(N == 2 && "Invalid number of operands!"); + int64_t Val = Mem.OffsetImm ? (Mem.OffsetImm->getValue() / 2) : 0; + Inst.addOperand(MCOperand::CreateReg(Mem.BaseRegNum)); + Inst.addOperand(MCOperand::CreateImm(Val)); + } + void addMemThumbRIs1Operands(MCInst &Inst, unsigned N) const { assert(N == 2 && "Invalid number of operands!"); int64_t Val = Mem.OffsetImm ? (Mem.OffsetImm->getValue()) : 0; |