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2011-08-09Replace the existing ARM disassembler with a new one based on the ↵Owen Anderson
FixedLenDecoderEmitter. This new disassembler can correctly decode all the testcases that the old one did, though some "expected failure" testcases are XFAIL'd for now because it is not (yet) as strict in operand checking as the old one was. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137144 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-04Fix broken encodings for the Thumb2 LDRD/STRD instructions.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136942 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-27ARM parsing and encoding of SBFX and UBFX.Jim Grosbach
Encode the width operand as it encodes in the instruction, which simplifies the disassembler and the encoder, by using the imm1_32 operand def. Add a diagnostic for the context-sensitive constraint that the width must be in the range [1,32-lsb]. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136264 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-26ARM cleanup of rot_imm encoding.Jim Grosbach
Start of cleaning this up a bit. First step is to remove the encoder hook by storing the operand as the bits it'll actually encode to so it can just be directly used. Map it to the assembly source values 8/16/24 when we print it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136152 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-25ARM assembly parsing and encoding for SSAT instruction.Jim Grosbach
Fix the Rn register encoding for both SSAT and USAT. Update the parsing of the shift operand to correctly handle the allowed shift types and immediate ranges and issue meaningful diagnostics when an illegal value or shift type is specified. Add aliases to parse an ommitted shift operand (default value of 'lsl #0'). Add tests for diagnostics and proper encoding. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135990 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-22ARM SSAT instruction 5-bit immediate handling.Jim Grosbach
The immediate is in the range 1-32, but is encoded as 0-31 in a 5-bit bitfield. Update the representation such that we store the operand as 0-31, allowing us to remove the encoder method and the special case handling in the disassembler. Update the assembly parser and the instruction printer accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135823 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-22Thumb assembly support for SETEND instruction.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135778 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-20ARM PKH shift ammount operand printing tweaks.Jim Grosbach
Move the shift operator and special value (32 encoded as 0 for PKHTB) handling into the instruction printer. This cleans up a bit of the disassembler special casing for these instructions, more easily handles not printing the operand at all for "lsl #0" and prepares for correct asm parsing of these operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135626 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-20ARM: Tidy up representation of PKH instruction.Jim Grosbach
The shift type is implied by the instruction (PKHBT vs. PKHTB) and so shouldn't be also encoded as part of the shift value immediate. Otherwise we're able to represent invalid instructions, plus it needlessly complicates the representation. Preparatory work for asm parsing of these instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135616 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18Revamp our handling of tLDMIA[_UPD] and tSTMIA[_UPD] to avoid having ↵Owen Anderson
multiple instructions with the same encoding. This resolves another conflict when bringing up the new-style disassembler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135442 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18Re-apply r135319 with a fix for the constant island pass.Owen Anderson
Original Log: Get rid of the separate opcodes for the Darwin versions of tBL, tBLXi, and tBLXr, using pseudo-instructions to lower to the single final opcode. Update the ARM disassembler for this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135414 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-16Revert r135319 in an attempt to get to unbreak testers.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135343 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Get rid of the separate opcodes for the Darwin versions of tBL, tBLXi, and ↵Owen Anderson
tBLXr, using pseudo-instructions to lower to the single final opcode. Update the ARM disassembler for this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135319 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-28- Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo andEvan Cheng
sink them into MC layer. - Added MCInstrInfo, which captures the tablegen generated static data. Chang TargetInstrInfo so it's based off MCInstrInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134021 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-25Restore an accidentally removed comment.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132044 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-25Change the order of tBX's operands so that the predicate operands come after theCameron Zwarich
target register, matching BX. I filed this bug because I was confused at first: PR10007 - ARM branch instructions have inconsistent predicate operand placement <http://llvm.org/bugs/show_bug.cgi?id=10007> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132041 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-25Rename tBX_Rm to tBX.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132040 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-18Disassembly of tBcc was wrongly adding 4 to the SignExtend'ed imm8:'0' ↵Johnny Chen
immediate operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131565 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15Thumb2 BFC was insufficiently encoded.Johnny Chen
rdar://problem/9292717 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129619 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14Add sanity checkings for Thumb2 Load/Store Register Exclusive family of ↵Johnny Chen
operations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129531 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13Thumb disassembler did not handle tBRIND (indirect branch) properly.Johnny Chen
rdar://problem/9280370 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129480 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13The LDR*T/STR*T (unpriviledged load/store) operations don't take SP or PC as Rt.Johnny Chen
rdar://problem/9279440 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129469 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13Check the corner cases for t2LDRSHi12 correctly and mark invalid encodings ↵Johnny Chen
as such. rdar://problem/9276651 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129462 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13Fix a bug where for t2MOVCCi disassembly, the TIED_TO register operand was ↵Johnny Chen
not properly handled. rdar://problem/9276427 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129456 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Add sanity check for Ld/St Dual forms of Thumb2 instructions.Johnny Chen
rdar://problem/9273947 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129411 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12The Thumb2 RFE instructions need to have their second halfword fully specified.Johnny Chen
In addition, the base register is not rGPR, but GPR with th exception that: if n == 15 then UNPREDICTABLE rdar://problem/9273836 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129391 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Add bad register checks for Thumb2 Ld/St instructions.Johnny Chen
rdar://problem/9269047 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129387 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12The Thumb2 Ld, St, and Preload instructions with the i12 forms should have ↵Johnny Chen
its Inst{23} be specified as '1' (add = TRUE). Also add a utility function for Thumb2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129377 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12Print out a debug message when the reglist fails the sanity check for Thumb ↵Johnny Chen
Ld/St Multiple. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129365 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-12A8.6.16 BJohnny Chen
Encoding T1 (tBcc) if cond == '1110' then UNDEFINED; rdar://problem/9268681 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129325 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-11Thumb disassembler was erroneously rejecting "blx sp" instruction.Johnny Chen
rdar://problem/9267838 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129320 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-11Fix the bug where the immediate shift amount for Thumb logical shift ↵Johnny Chen
instructions are incorrectly disassembled. rdar://problem/9266265 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129298 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-11Adding support for printing operands symbolically to llvm's public 'C'Kevin Enderby
disassembler API. Hooked this up to the ARM target so such tools as Darwin's otool(1) can now print things like branch targets for example this: blx _puts instead of this: blx #-36 And even print the expression encoded in the Mach-O relocation entried for things like this: movt r0, :upper16:((_foo-_bar)+1234) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129284 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-08Sanity check the option operand for DMB/DSB.Johnny Chen
PR9648 rdar://problem/9257634 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129146 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-28Fix ARM disassembly for PLD/PLDW/PLI which suffers from code rot and add ↵Johnny Chen
some test cases. Add comments to ThumbDisassemblerCore.h for recent change made for t2PLD disassembly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128417 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-26Fixed the t2PLD and friends disassembly and add two test cases.Johnny Chen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128322 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-25Fix DisassembleThumb2DPReg()'s handling of RegClass. Cannot hardcode ↵Johnny Chen
GPRRegClassID. Also add some test cases. rdar://problem/9189829 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128304 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-25DisassembleThumb2LdSt() did not handle t2LDRs correctly with respect to ↵Johnny Chen
RegClass. Add two test cases. rdar://problem/9182892 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128299 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-25Modify DisassembleThumb2LdStEx() to be more robust/correct in light of ↵Johnny Chen
recent change to t2LDREX/t2STREX instructions. Add two test cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128293 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-25Modify the wrong logic in the assert of DisassembleThumb2LdStDual() (the ↵Johnny Chen
register classes were changed), modify the comment to be up-to-date, and add a test case for A8.6.66 LDRD (immediate) Encoding T1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128252 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-24T2 Load/Store Multiple:Johnny Chen
These instructions were changed to not embed the addressing mode within the MC instructions We also need to update the corresponding assert stmt. Also add a test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128240 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-22Avoid -Wunused-variable in -asserts buildsMatt Beaumont-Gay
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128048 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18The disassembler for Thumb was wrongly adding 4 to the computed imm32 offset.Johnny Chen
Remove the offending logic and update the test cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127843 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17It used to be that t_addrmode_s4 was used for both:Johnny Chen
o A8.6.195 STR (register) -- Encoding T1 o A8.6.193 STR (immediate, Thumb) -- Encoding T1 It has been changed so that now they use different addressing modes and thus different MC representation (Operand Infos). Modify the disassembler to reflect the change, and add relevant tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Add missing whitespace in the formatting.Kevin Enderby
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126687 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Fix the arm's disassembler for blx that was building an MCInst without theKevin Enderby
needed two predicate operands before the imm operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126662 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Add assembly parsing support for "msr" and also fix its encoding. Also addBruno Cardoso Lopes
testcases for the disassembler to make sure it still works for "msr". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125948 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Fix encoding and add parsing support for the arm/thumb CPS instruction:Bruno Cardoso Lopes
- Add custom operand matching for imod and iflags. - Rename SplitMnemonicAndCC to SplitMnemonic since it splits more than CC from mnemonic. - While adding ".w" as an operand, don't change "Head" to avoid passing the wrong mnemonic to ParseOperand. - Add asm parser tests. - Add disassembler tests just to make sure it can catch all cps versions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125489 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-08Revert both r121082 (which broke a bunch of constant pool stuff) and r125074 ↵Owen Anderson
(which worked around it). This should get us back to the old, correct behavior, though it will make the integrated assembler unhappy for the time being. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125127 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-07Second attempt at converting Thumb2's LDRpci, including updating the ↵Owen Anderson
gazillion places that need to know about it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121082 91177308-0d34-0410-b5e6-96231b3b80d8
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