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| author | Bradley Smith <bradley.smith@arm.com> | 2014-04-09 14:41:45 +0000 |
|---|---|---|
| committer | Bradley Smith <bradley.smith@arm.com> | 2014-04-09 14:41:45 +0000 |
| commit | 87c60e00d5f9bca42413f660966b8679634321ae (patch) | |
| tree | 79dd56cc06791aab7fa7d504f18043adabeb627c /llvm/lib/Target/ARM64/Disassembler | |
| parent | cd91e5cd0c1f3076f76cfc1abf356a6dc15a2575 (diff) | |
| download | bcm5719-llvm-87c60e00d5f9bca42413f660966b8679634321ae.tar.gz bcm5719-llvm-87c60e00d5f9bca42413f660966b8679634321ae.zip | |
[ARM64] MOVK with sf=0 and hw<1>=1 is unallocated. Shift amount for ADD/SUB instructions is unallocated if shift > 4.
llvm-svn: 205859
Diffstat (limited to 'llvm/lib/Target/ARM64/Disassembler')
| -rw-r--r-- | llvm/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp b/llvm/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp index b522939af8a..55267b06409 100644 --- a/llvm/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp +++ b/llvm/lib/Target/ARM64/Disassembler/ARM64Disassembler.cpp @@ -906,6 +906,8 @@ static DecodeStatus DecodeMoveImmInstruction(llvm::MCInst &Inst, uint32_t insn, case ARM64::MOVZWi: case ARM64::MOVNWi: case ARM64::MOVKWi: + if (shift & (1U << 5)) + return Fail; DecodeGPR32RegisterClass(Inst, Rd, Addr, Decoder); break; case ARM64::MOVZXi: @@ -1339,6 +1341,10 @@ static DecodeStatus DecodeAddSubERegInstruction(llvm::MCInst &Inst, unsigned Rm = fieldFromInstruction(insn, 16, 5); unsigned extend = fieldFromInstruction(insn, 10, 6); + unsigned shift = extend & 0x7; + if (shift > 4) + return Fail; + switch (Inst.getOpcode()) { default: return Fail; |
