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183 Commits

Author SHA1 Message Date
Owen Anderson
9cd21ce8c9 LDM writeback is not allowed if Rn is in the target register list. 
llvm-svn: 139432
 2011-09-09 23:13:33 +00:00
Owen Anderson
dbe77fc5a1 Fix assembly/disassembly of Thumb2 ADR instructions with immediate operands. 
llvm-svn: 139422
 2011-09-09 22:24:36 +00:00
Owen Anderson
d7127e0c27 Soft fail CBZ/CBNZ in the disassembler if they appear inside an IT block. 
llvm-svn: 139328
 2011-09-08 22:42:49 +00:00
Jim Grosbach
9f150bfedf Thumb2 assembly parsing and encoding for LDRD(immediate). 
Refactor operand handling for STRD as well. Tests for that forthcoming.

llvm-svn: 139322
 2011-09-08 22:07:06 +00:00
Owen Anderson
26467730c1 Create Thumb2 versions of STC/LDC, and reenable the relevant tests. 
llvm-svn: 139256
 2011-09-07 21:10:42 +00:00
James Molloy
ac057f13a5 Second of a three-patch series aiming to fix MSR/MRS on Cortex-M. This adds predicate checking to the Disassembler. 
llvm-svn: 139250
 2011-09-07 19:42:28 +00:00
Jim Grosbach
f5f321c4ce Update test for 139243 
llvm-svn: 139244
 2011-09-07 18:40:06 +00:00
Owen Anderson
4106b9fb31 Port more assembler tests over to disassembler tests, and fix a minor logic error that exposed. 
llvm-svn: 139240
 2011-09-07 17:55:19 +00:00
Owen Anderson
23820ebb17 Port more encoding tests over to Thumb2 decoding tests. 
llvm-svn: 139171
 2011-09-06 20:26:34 +00:00
Owen Anderson
adac5b2109 Fix issues with disassembly of IT instructions involving condition codes other the EQ/NE. Discovered by roundtrip testing. 
llvm-svn: 138840
 2011-08-30 22:58:27 +00:00
Owen Anderson
9d3407e7c2 Port Thumb2 assembler tests over to disassembler tests. 
llvm-svn: 138822
 2011-08-30 20:03:11 +00:00
Owen Anderson
fd21da3506 Improve encoding support for BLX with immediat eoperands, and fix a BLX decoding bug this uncovered. 
llvm-svn: 138675
 2011-08-26 23:32:08 +00:00
Owen Anderson
af51fd9868 invalid-LDR_PRE-arm.txt was already passing, but for the wrong reasons. We were failing to specify enough fixed bits of LDR_PRE/LDRB_PRE, resulting in decoding conflicts. Separate them into immediate vs. register versions, allowing us to specify the necessary fixed bits. This in turn results in the test being decoded properly, and being rejected as UNPREDICTABLE rather than a hard failure. 
llvm-svn: 138653
 2011-08-26 20:43:14 +00:00
Owen Anderson
86b11d01eb Support an extension of ARM asm syntax to allow immediate operands to ADR instructions. This is helpful for disassembler testing, and indeed exposed a disassembler bug that is also fixed here. 
llvm-svn: 138635
 2011-08-26 18:09:22 +00:00
Owen Anderson
485eda7687 Add a testcase for r138625. 
llvm-svn: 138626
 2011-08-26 06:45:08 +00:00
Owen Anderson
d387b48b0b Port over additional encoding tests to decoding tests, and fix an operand ordering bug this exposed. 
llvm-svn: 138575
 2011-08-25 18:30:18 +00:00
Owen Anderson
6325690c08 Port over more encoding tests to decoding tests. 
llvm-svn: 138441
 2011-08-24 17:08:34 +00:00
Owen Anderson
3de2d7656d Fix decoding of Thumb2 prefetch instructions, which account for all the remaining Thumb2 decoding failures found by randomized testing so far. 
llvm-svn: 138341
 2011-08-23 17:51:38 +00:00
Owen Anderson
9d5074746f Fix two more instances of mis-matched operand names breaking disassembly. Found by randomized testing. 
llvm-svn: 138337
 2011-08-23 17:37:32 +00:00
Owen Anderson
b97912374e Port more assemble tests over to disassembly tests. 
llvm-svn: 138336
 2011-08-23 17:26:35 +00:00
Owen Anderson
d5b7d73696 t2SMLAD is a four-register instruction, not a three-register one. 
llvm-svn: 138301
 2011-08-22 23:31:45 +00:00
Owen Anderson
c395a07c42 Correct operand naming of t2USAT16 to allow proper decoding. 
llvm-svn: 138300
 2011-08-22 23:27:47 +00:00
Owen Anderson
9e750147fb Match operand naming to allow correct decoding of t2LDRSH_POST. 
llvm-svn: 138298
 2011-08-22 23:22:05 +00:00
Owen Anderson
b400952853 Provide a correct decoder hook for Thumb2 shifted registers. Found by randomized testing. 
llvm-svn: 138292
 2011-08-22 23:10:16 +00:00
Owen Anderson
a2231fad2e Provide operand encoding information for half-precision VCVT instructions. Found by randomized testing. 
llvm-svn: 138273
 2011-08-22 21:34:00 +00:00
Owen Anderson
39d3f234f7 Fix decoding of VMOVSRR and VMOVRRS, which account for the overwhelming majority of decoder crashes detected by randomized testing. 
llvm-svn: 138269
 2011-08-22 20:27:12 +00:00
Owen Anderson
926f360e53 Fix another batch of VLD/VST decoding crashes discovered by randomized testing. 
llvm-svn: 138255
 2011-08-22 18:42:13 +00:00
Owen Anderson
816f5524f8 Correct writeback handling of duplicating VLD instructions. Discovered by randomized testing. 
llvm-svn: 138251
 2011-08-22 18:22:06 +00:00
Owen Anderson
e70aed2df9 Port another swathe of Thumb1 encoding tests over to decoding tests. 
llvm-svn: 138250
 2011-08-22 18:05:49 +00:00
Owen Anderson
59178665b5 Fix an incorrect shift when decoding SP-relative stores in Thumb1-mode. Add more tests. 
llvm-svn: 138246
 2011-08-22 17:56:58 +00:00
Owen Anderson
421e30086e STC2L_POST and STC2L_POST should be handled the same as STCL_POST/LDC_POST for the purposes of decoding all operands except the predicate. 
Found by randomized testing.

llvm-svn: 138003
 2011-08-18 22:47:44 +00:00
Owen Anderson
d113a59074 Fix the decoding of RFE instruction. RFEs have the load bit set, while SRSs have it unset. 
llvm-svn: 138000
 2011-08-18 22:31:17 +00:00
Owen Anderson
d121f0e77c Improve handling of failure and unpredictable cases for CPS, STR, and SMLA instructions. 
Fixes a large class of disassembler crashes found by randomized testing.

llvm-svn: 137995
 2011-08-18 22:11:02 +00:00
Jim Grosbach
7ecefeb594 Thumb assembly parsing and encoding for LDM instruction. 
Fix base register type and canonicallize to the "ldm" spelling rather than
"ldmia." Add diagnostics for incorrect writeback token and out-of-range
registers.

llvm-svn: 137986
 2011-08-18 21:50:53 +00:00
Owen Anderson
b4bc7704ec More Thumb1 decoding tests. 
llvm-svn: 137974
 2011-08-18 20:05:06 +00:00
James Molloy
5d9ba3b5aa Test commit; adding test for invalid LDRD which was part of the patch for r137647 but seemingly didn't get svn add'ed. 
llvm-svn: 137960
 2011-08-18 18:03:02 +00:00
Owen Anderson
366ac95879 Port over BL/BLX to disassembly tests. 
llvm-svn: 137954
 2011-08-18 17:43:52 +00:00
Owen Anderson
eb5c093d8d Port new Thumb1 encoding tests over to decoding tests. 
llvm-svn: 137902
 2011-08-17 23:37:33 +00:00
Owen Anderson
4c26beae4c Start building a Thumb1 decoding test file based on the Thumb1 parsing/encoding test file. 
llvm-svn: 137840
 2011-08-17 18:21:36 +00:00
Owen Anderson
3146968039 Allow the MCDisassembler to return a "soft fail" status code, indicating an instruction that is disassemblable, but invalid. Only used for ARM UNPREDICTABLE instructions at the moment. 
Patch by James Molloy.

llvm-svn: 137830
 2011-08-17 17:44:15 +00:00
Owen Anderson
6549866051 Add a test file for Thumb2 NEON. 
llvm-svn: 137687
 2011-08-15 23:42:20 +00:00
Owen Anderson
54ded8463c Add some more comprehensive VFP decoding tests. 
llvm-svn: 137657
 2011-08-15 21:29:01 +00:00
Owen Anderson
42946000dd Enforce the constraint that Rt must be even on LDRD/STRD instructions in ARM mode. Update tests to reflect this fact. 
Patch by James Molloy.

llvm-svn: 137647
 2011-08-15 20:51:32 +00:00
Owen Anderson
43b6d1c14e Add a test for Thumb1 LDRSH decoding. 
llvm-svn: 137645
 2011-08-15 20:15:43 +00:00
Owen Anderson
aed8eff14b Add testcase for STRH. Patch by James Molloy. 
llvm-svn: 137644
 2011-08-15 20:12:03 +00:00
Owen Anderson
4854258d9c Fix incorrect encoding of UMAAL and friends. Patch by James Molloy. 
llvm-svn: 137641
 2011-08-15 20:08:25 +00:00
Owen Anderson
cd94fca93d Fix decoding LDRSB and LDRSH in Thumb1 mode. Patch by James Molloy. 
llvm-svn: 137636
 2011-08-15 19:00:06 +00:00
Owen Anderson
894585de33 Fix problems decoding the to/from-lane NEON memory instructions, and add a comprehensive NEON decoding testcase. 
llvm-svn: 137635
 2011-08-15 18:44:44 +00:00
Owen Anderson
2ea55a0881 Fix some remaining issues with decoding ARM-mode memory instructions, and add another batch of tests. 
llvm-svn: 137502
 2011-08-12 20:36:11 +00:00
Owen Anderson
9d85cab3d5 Port over the basic ARM encodings test file to a decoding test file. Greatly increases our test coverage of basic ARM-mode instructions. 
llvm-svn: 137495
 2011-08-12 19:42:45 +00:00