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13 Commits

Author SHA1 Message Date
Johnny Chen
48bbf4910e Fixed another assert exposed by fuzzing. Now, when an encoding error occurs 
involing getBFCInvMask() where lsb <= msb does not hold true, the disassembler
just returns false, instead of assert, to indicate disassembly error.

llvm-svn: 101205
 2010-04-14 02:05:29 +00:00
Johnny Chen
82c3cadad6 Fixed an assert() exposed by fuzzing. Now, instead of assert when an invalid 
instruction encoding is encountered, we just return a NULL ARMBasicMCBuilder
instance and the client just returns false to indicate disassembly error.

llvm-svn: 101201
 2010-04-14 01:17:37 +00:00
Johnny Chen
85ce9f4f30 Missed this one line for the previous checkin to fix build warnings. 
llvm-svn: 100697
 2010-04-07 22:21:03 +00:00
Johnny Chen
8b04b550df Fixed warnings pointed out by clang. 
llvm-svn: 100696
 2010-04-07 22:03:27 +00:00
Johnny Chen
3f253e2cb1 Fixed 3 warnings pointed out by clang. 
llvm-svn: 100693
 2010-04-07 21:23:48 +00:00
Evan Cheng
492a82e426 Re-apply 100265 but instead disable building of ARM disassembly for now. 
llvm-svn: 100379
 2010-04-05 01:34:00 +00:00
Evan Cheng
876a5015af Reverting 100265 to try to get buildbots green again. Lots of self-hosting buildbots started complaining since this commit. Also xfail ARM disassembly tests. 
llvm-svn: 100378
 2010-04-05 01:04:27 +00:00
Johnny Chen
fc8c3b7547 Get rid of the middleman (ARMAlgorithm), which causes more trouble than the 
abstraction it brings.  And also get rid of the atexit() handler, it does not
belong in the lib directory. :-)

llvm-svn: 100265
 2010-04-03 04:10:56 +00:00
Johnny Chen
884e66a545 Fix comment. 
llvm-svn: 100259
 2010-04-03 01:17:30 +00:00
Johnny Chen
58e83eb50d Register ARMAlgorithm::DoCleanup() to be called on exit to free the memory 
occuplied by the cached ARMAlgorithm objects.

llvm-svn: 100258
 2010-04-03 01:09:47 +00:00
Johnny Chen
7b999ea7b7 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.

llvm-svn: 100233
 2010-04-02 22:27:38 +00:00
Bob Wilson
1b4e8cc69c --- Reverse-merging r98637 into '.': 
U    test/CodeGen/ARM/tls2.ll
U    test/CodeGen/ARM/arm-negative-stride.ll
U    test/CodeGen/ARM/2009-10-30.ll
U    test/CodeGen/ARM/globals.ll
U    test/CodeGen/ARM/str_pre-2.ll
U    test/CodeGen/ARM/ldrd.ll
U    test/CodeGen/ARM/2009-10-27-double-align.ll
U    test/CodeGen/Thumb2/thumb2-strb.ll
U    test/CodeGen/Thumb2/ldr-str-imm12.ll
U    test/CodeGen/Thumb2/thumb2-strh.ll
U    test/CodeGen/Thumb2/thumb2-ldr.ll
U    test/CodeGen/Thumb2/thumb2-str_pre.ll
U    test/CodeGen/Thumb2/thumb2-str.ll
U    test/CodeGen/Thumb2/thumb2-ldrh.ll
U    utils/TableGen/TableGen.cpp
U    utils/TableGen/DisassemblerEmitter.cpp
D    utils/TableGen/RISCDisassemblerEmitter.h
D    utils/TableGen/RISCDisassemblerEmitter.cpp
U    Makefile.rules
U    lib/Target/ARM/ARMInstrNEON.td
U    lib/Target/ARM/Makefile
U    lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
U    lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
U    lib/Target/ARM/AsmPrinter/ARMInstPrinter.h
D    lib/Target/ARM/Disassembler
U    lib/Target/ARM/ARMInstrFormats.td
U    lib/Target/ARM/ARMAddressingModes.h
U    lib/Target/ARM/Thumb2ITBlockPass.cpp

llvm-svn: 98640
 2010-03-16 16:59:47 +00:00
Johnny Chen
3d9327bd06 Initial ARM/Thumb disassembler check-in. It consists of a tablgen backend 
(RISCDisassemblerEmitter) 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.

Added sub-formats to the NeonI/NeonXI instructions to further refine the NEONFrm
instructions to help disassembly.

We also changed the output of the addressing modes to omit the '+' from the
assembler syntax #+/-<imm> or +/-<Rm>.  See, for example, A8.6.57/58/60.

And modified test cases to not expect '+' in +reg or #+num.  For example,

; CHECK:       ldr.w	r9, [r7, #28]

llvm-svn: 98637
 2010-03-16 16:36:54 +00:00