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| author | Johnny Chen <johnny.chen@apple.com> | 2011-04-07 18:33:19 +0000 |
|---|---|---|
| committer | Johnny Chen <johnny.chen@apple.com> | 2011-04-07 18:33:19 +0000 |
| commit | 194a2267add11d393cbb7f0bc2067e1410415231 (patch) | |
| tree | e3e38fdd640201b770866461adbb76bc1b808117 /llvm | |
| parent | 2083c32f7aa6dfc3af66562dd5903d3e0b9eb59e (diff) | |
| download | bcm5719-llvm-194a2267add11d393cbb7f0bc2067e1410415231.tar.gz bcm5719-llvm-194a2267add11d393cbb7f0bc2067e1410415231.zip | |
Add some more comments about checkings of invalid register numbers.
And two test cases.
llvm-svn: 129090
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp | 5 | ||||
| -rw-r--r-- | llvm/test/MC/Disassembler/ARM/arm-tests.txt | 3 | ||||
| -rw-r--r-- | llvm/test/MC/Disassembler/ARM/invalid-LSL-regform.txt | 11 |
3 files changed, 19 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp index bc0ba92d58e..f4fa3de2684 100644 --- a/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp +++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassemblerCore.cpp @@ -1110,6 +1110,11 @@ static bool DisassembleDPSoRegFrm(MCInst &MI, unsigned Opcode, uint32_t insn, // A8.6.3 ADC (register-shifted register) // if d == 15 || n == 15 || m == 15 || s == 15 then UNPREDICTABLE; + // + // This also accounts for shift instructions (register) where, fortunately, + // Inst{19-16} = 0b0000. + // A8.6.89 LSL (register) + // if d == 15 || n == 15 || m == 15 then UNPREDICTABLE; if (decodeRd(insn) == 15 || decodeRn(insn) == 15 || decodeRm(insn) == 15 || decodeRs(insn) == 15) return false; diff --git a/llvm/test/MC/Disassembler/ARM/arm-tests.txt b/llvm/test/MC/Disassembler/ARM/arm-tests.txt index e235d518968..a044b0d7db3 100644 --- a/llvm/test/MC/Disassembler/ARM/arm-tests.txt +++ b/llvm/test/MC/Disassembler/ARM/arm-tests.txt @@ -245,3 +245,6 @@ # CHECK: smlsldx r4, r12, r11, r4 0x7b 0x44 0x4c 0xe7 + +# CHECK: lsl r3, r2, r1 +0x12 0x31 0xa0 0xe1 diff --git a/llvm/test/MC/Disassembler/ARM/invalid-LSL-regform.txt b/llvm/test/MC/Disassembler/ARM/invalid-LSL-regform.txt new file mode 100644 index 00000000000..20293ada798 --- /dev/null +++ b/llvm/test/MC/Disassembler/ARM/invalid-LSL-regform.txt @@ -0,0 +1,11 @@ +# RUN: llvm-mc --disassemble %s -triple=arm-apple-darwin9 |& grep {invalid instruction encoding} + +# Opcode=196 Name=MOVs Format=ARM_FORMAT_DPSOREGFRM(5) +# 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 +# ------------------------------------------------------------------------------------------------- +# | 1: 1: 1: 0| 0: 0: 0: 1| 1: 0: 1: 0| 0: 0: 0: 0| 1: 1: 1: 1| 0: 0: 0: 1| 0: 0: 0: 1| 0: 0: 1: 0| +# ------------------------------------------------------------------------------------------------- +# +# A8.6.89 LSL (register) +# if d == 15 || n == 15 || m == 15 then UNPREDICTABLE; +0x12 0xf1 0xa0 0xe1 |
