Commit Graph

479 Commits

Author SHA1 Message Date
Johnny Chen cbe3e1a3df ARM disassembler did not react to recent changes to the NEON instruction table.
VLD1q*_UPD and VST1q*_UPD have the ${dst:dregpair} operand now.

llvm-svn: 101784
2010-04-19 16:20:34 +00:00
Johnny Chen c275414575 Cast to (uint64_t) instead of relying on the "ul" suffix.
llvm-svn: 101573
2010-04-16 23:30:28 +00:00
Johnny Chen ed9bee150b Fixed logic error. Should check Builder for validity before calling SetSession
on it.

llvm-svn: 101563
2010-04-16 23:02:25 +00:00
Johnny Chen b90b6f1a35 Fixed a bug in DisassembleN1RegModImmFrm() where a break stmt was missing for a
case.  Also, the 0xFF hex literal involved in the shift for ESize64 should be
suffixed "ul" to preserve the shift result.

Implemented printHex*ImmOperand() by copying from ARMAsmPrinter.cpp and added a
test case for DisassembleN1RegModImmFrm()/printHex64ImmOperand().

llvm-svn: 101557
2010-04-16 22:40:20 +00:00
Johnny Chen 4230e35879 DEBUG() print out "Unknown format" msg.
llvm-svn: 101382
2010-04-15 18:13:51 +00:00
Johnny Chen 0175ec1263 Wrap the error msgs in DEBUG() macro so that they won't appear in NDEBUG build.
llvm-svn: 101329
2010-04-15 01:20:56 +00:00
Johnny Chen 82c50b11fa Fixed another assert exposed by fuzzing. Now, the DisassembleVFPLdStMulFrm()
function checks whether we have a valid submode for VLDM/VSTM (must be either
"ia" or "db") before calling ARM_AM::getAM5Opc(AMSubMode, unsigned char).

llvm-svn: 101306
2010-04-14 22:37:17 +00:00
Johnny Chen 9aaaf4d5fa For t2BFI disassembly, apply the same error checking as in r101205.
Change the error msg to read "Encoding error: msb < lsb".

llvm-svn: 101293
2010-04-14 22:04:45 +00:00
Johnny Chen 7637827064 Fixed another assert exposed by fuzzing. The utility function getRegisterEnum()
was asserting because the (RegClass, RegNum) combination doesn't make sense from
an encoding point of view.

Since getRegisterEnum() is used all over the place, to change the code to check
for encoding error after each call would not only bloat the code, but also make
it less readable.  An Err flag is added to the ARMBasicMCBuilder where a client
can set a non-zero value to indicate some kind of error condition while building
up the MCInst.  ARMBasicMCBuilder::BuildIt() checks this flag and returns false
if a non-zero value is detected.

llvm-svn: 101290
2010-04-14 21:03:13 +00:00
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
Sean Callanan 814e69b171 Fixed a nasty layering violation in the edis source
code.  It used to #include the enhanced disassembly
information for the targets it supported straight
out of lib/Target/{X86,ARM,...} but now it uses a
new interface provided by MCDisassembler, and (so
far) implemented by X86 and ARM.

Also removed hacky #define-controlled initialization
of targets in edis.  If clients only want edis to
initialize a limited set of targets, they can set
--enable-targets on the configure command line.

llvm-svn: 101179
2010-04-13 21:21:57 +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 80f8c3d533 Fixed warnings pointed out by clang.
Next to work on is ARMDisassemblerCore.cpp.

llvm-svn: 100695
2010-04-07 21:52:48 +00:00
Johnny Chen 3f253e2cb1 Fixed 3 warnings pointed out by clang.
llvm-svn: 100693
2010-04-07 21:23:48 +00:00
Johnny Chen 4e2f8722c4 Re-enable ARM/Thumb disassembler and add a workaround for a memcpy() call in
ARMDecoderEmitter.cpp, with FIXME comment.

llvm-svn: 100690
2010-04-07 20:53:12 +00:00
Johnny Chen dacfd2c6d4 Get rid of traling whitespaces. No functionality change.
llvm-svn: 100404
2010-04-05 04:51:50 +00:00
Johnny Chen dba13e7922 The disassembler impl. of MCDisassembler::getInstruction() was using the pattern
uint32_t insn;
  MemoryObject.readBytes(Address, 4, (uint8_t*)&insn, NULL)

to read 4 bytes of memory contents into a 32-bit uint variable.  This leaves the
interpretation of byte order up to the host machine and causes PPC test cases of
arm-tests, neon-tests, and thumb-tests to fail.  Fixed to use a byte array for
reading the memory contents and shift the bytes into place for the 32-bit uint
variable in the ARM case and 16-bit halfword in the Thumb case.

llvm-svn: 100403
2010-04-05 04:46:17 +00:00
Evan Cheng 0b8adb0652 Temporarily remove to disable building of ARM disassembler.
llvm-svn: 100380
2010-04-05 01:57:50 +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 a0d74064fe Fix another build warning.
llvm-svn: 100251
2010-04-02 23:43:38 +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