7 Commits

Author SHA1 Message Date
Johnny Chen
52d2b0ed00 Thumb instructions which have reglist operands at the end and predicate operands
before reglist were not properly handled with respect to IT Block.  Fix that by
creating a new method ARMBasicMCBuilder::DoPredicateOperands() used by those
instructions for disassembly.  Add a test case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101974 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 01:01:19 +00:00
Johnny Chen
56a1afb6b0 When doing Thumb disassembly, there's no need to consider t2ADDrSPi12/t2SUBrSPi12,
as their generic counterparts t2ADDri12/t2SUBri12 should suffice.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101929 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 18:45:24 +00:00
Johnny Chen
ef37e3abb7 For t2LDRT, t2LDRBT, t2LDRHT, t2LDRSBT, and t2LDRSHT, if Rn(Inst{19-16})=='1111',
transform the Opcode to the corresponding t2LDR*pci counterpart.

Ref: A8.6.86 LDRT, A8.6.65 LDRBT, A8.6.77 LDRHT, A8.6.81 LDRSBT, A8.6.85 LDRSHT


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101915 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 17:28:50 +00:00
Johnny Chen
22e401f5d4 According to A8.6.16 B (Encoding T3) and A8.3 Conditional execution -- A8.3.1
Pseudocode details of conditional, Condition bits '111x' indicate the
instruction is always executed.  That is, '1111' is a leagl condition field
value, which is now mapped to ARMCC::AL.

Also add a test case for condition field '1111'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101817 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19 21:19:52 +00:00
Benjamin Kramer
447b19543b unXFAIL, arm disassembler was reenabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100692 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07 21:19:41 +00:00
Evan Cheng
1b0194d646 Reverting 100265 to try to get buildbots green again. Lots of self-hosting buildbots started complaining since this commit. Also xfail ARM disassembly tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100378 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-05 01:04:27 +00:00
Johnny Chen
b68a3ee82a Second try of initial ARM/Thumb disassembler check-in. It consists of a tablgen
backend (ARMDecoderEmitter) which emits the decoder functions for ARM and Thumb,
and the disassembler core which invokes the decoder function and builds up the
MCInst based on the decoded Opcode.

Reviewed by Chris Latter and Bob Wilson.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100233 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 22:27:38 +00:00