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| author | Johnny Chen <johnny.chen@apple.com> | 2011-04-05 22:57:07 +0000 |
|---|---|---|
| committer | Johnny Chen <johnny.chen@apple.com> | 2011-04-05 22:57:07 +0000 |
| commit | c3281c10c94185e18338764b225a730a7c3e3ec4 (patch) | |
| tree | d2501307a259747e16299c200c92fa38cd648f46 /lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp | |
| parent | da19475328ece3da19437a2e9eef035dcafa2814 (diff) | |
A7.3 register encoding
Qd -> bit[12] == 0
Qn -> bit[16] == 0
Qm -> bit[0] == 0
If one of these bits is 1, the instruction is UNDEFINED.
rdar://problem/9238399
rdar://problem/9238445
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128949 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp')
| -rw-r--r-- | lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp index db76c11b7b..58f9c1f759 100644 --- a/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp +++ b/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp @@ -94,6 +94,16 @@ getRegisterEnum(BO B, unsigned RegClassID, unsigned RawRegister) { } // See also decodeNEONRd(), decodeNEONRn(), decodeNEONRm(). + // A7.3 register encoding + // Qd -> bit[12] == 0 + // Qn -> bit[16] == 0 + // Qm -> bit[0] == 0 + // + // If one of these bits is 1, the instruction is UNDEFINED. + if (RegClassID == ARM::QPRRegClassID && slice(RawRegister, 0, 0) == 1) { + B->SetErr(-1); + return 0; + } unsigned RegNum = RegClassID == ARM::QPRRegClassID ? RawRegister >> 1 : RawRegister; |