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218 Commits

Author SHA1 Message Date
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
Craig Topper
f68d77215d Add TB encoding to VEX versions of SSE fp logical operations to fix disassembler 
llvm-svn: 138034
 2011-08-19 05:28:50 +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
Owen Anderson
4618d77bcd Fix decoding for indexed STRB and LDRB. Fixes <rdar://problem/9926161>. 
llvm-svn: 137347
 2011-08-11 20:47:56 +00:00
Owen Anderson
1ec4fcb5d3 Improve operand validation for Thumb2 addressing modes. 
llvm-svn: 137344
 2011-08-11 20:40:40 +00:00
Owen Anderson
73e7d34732 Continue to tighten decoding by performing more operand validation. 
llvm-svn: 137340
 2011-08-11 20:21:46 +00:00
Owen Anderson
63ccfdccd1 Tighten decoding of addrmode2 instructions to reject more UNPREDICTABLE cases. 
llvm-svn: 137325
 2011-08-11 19:00:18 +00:00
Owen Anderson
decc5fcced Tighten operand decoding of addrmode2 instruction. The offset register cannot be PC. 
llvm-svn: 137323
 2011-08-11 18:55:42 +00:00
Owen Anderson
707fcaca0e Correct immediate range for shifter operands. Patch by James Molloy, with additional encoding fixes added by me. 
llvm-svn: 137322
 2011-08-11 18:41:59 +00:00
Owen Anderson
8d6b9f063f Improve error checking in the new ARM disassembler. Patch by James Molloy. 
llvm-svn: 137320
 2011-08-11 18:24:51 +00:00
Owen Anderson
0fde7a84ee Add initial support for decoding NEON instructions in Thumb2 mode. 
llvm-svn: 137236
 2011-08-10 19:01:10 +00:00
Owen Anderson
87b5ce880a Push GPRnopc through a large number of instruction definitions to tighten operand decoding. 
llvm-svn: 137189
 2011-08-10 00:03:03 +00:00
Owen Anderson
b717d71aa1 Tighten operand checking of register-shifted-register operands. 
llvm-svn: 137180
 2011-08-09 23:33:27 +00:00
Owen Anderson
62faf296dd Tighten operand checking on memory barrier instructions. 
llvm-svn: 137176
 2011-08-09 23:25:42 +00:00
Owen Anderson
869ce85500 Tighten operand checking on CPS instructions. 
llvm-svn: 137172
 2011-08-09 23:05:39 +00:00
Owen Anderson
8ad37f68a2 Create a new register class for the set of all GPRs except the PC. Use it to tighten our decoding of BFI. 
llvm-svn: 137168
 2011-08-09 22:48:45 +00:00
Benjamin Kramer
ca48bdfd5b ARM Disassembler: sign extend branch immediates. 
Not sure about BLXi, but this is what the old disassembler did.

llvm-svn: 137156
 2011-08-09 22:02:50 +00:00
Owen Anderson
2aa4c7e391 Tighten Thumb1 branch predicate decoding. 
llvm-svn: 137146
 2011-08-09 21:07:45 +00:00
Owen Anderson
ffe1c55752 Replace the existing ARM disassembler with a new one based on the 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.

llvm-svn: 137144
 2011-08-09 20:55:18 +00:00
Jim Grosbach
767e9d16e6 ARM refactoring assembly parsing of memory address operands. 
Memory operand parsing is a bit haphazzard at the moment, in no small part
due to the even more haphazzard representations of memory operands in the .td
files. Start cleaning that all up, at least a bit.

The addressing modes in the .td files will be being simplified to not be
so monolithic, especially with regards to immediate vs. register offsets
and post-indexed addressing. addrmode3 is on its way with this patch, for
example.

This patch is foundational to enable going back to smaller incremental patches
for the individual memory referencing instructions themselves. It does just
enough to get the basics in place and handle the "make check" regression tests
we already have.

Follow-up work will be fleshing out the details and adding more robust test
cases for the individual instructions, starting with ARM mode and moving from
there into Thumb and Thumb2.

llvm-svn: 136845
 2011-08-03 23:50:40 +00:00
Jim Grosbach
9f0533c5d2 ARM SRS instruction parsing, diassembly and encoding support. 
Fix the instruction encoding for operands. Refactor mode to use explicit
instruction definitions per FIXME to be more consistent with loads/stores.
Fix disassembler accordingly. Add tests.

llvm-svn: 136509
 2011-07-29 20:26:09 +00:00
Jim Grosbach
e70c8eb49a Tweak ARM assembly parsing and printing of MSR instruction. 
The system register spec should be case insensitive. The preferred form for
output with mask values of 4, 8, and 12 references APSR rather than CPSR.
Update and tidy up tests accordingly.

llvm-svn: 135532
 2011-07-19 22:45:10 +00:00
Eli Friedman
f6cac8a620 Make the disassembler able to disassemble a bunch of instructions with names in the TableGen files containing "64" on x86-32. This includes a bunch of x87 instructions, like fld, and a bunch of SSSE3 instructions on MMX registers like pshufb. Part of PR8873. 
llvm-svn: 135337
 2011-07-16 02:41:28 +00:00
Owen Anderson
7a380bac06 Remove VMOVDneon and VMOVQ, which are just aliases for VORR. This continues to simplify the path towards an auto-generated disassembler. 
llvm-svn: 135290
 2011-07-15 18:46:47 +00:00
Jim Grosbach
93f2ebb5e7 Simplify printing of ARM shifted immediates. 
Print shifted immediate values directly rather than as a payload+shifter
value pair. This makes for more readable output assembly code, simplifies
the instruction printer, and is consistent with how Thumb immediates are
 displayed.

llvm-svn: 134902
 2011-07-11 16:48:36 +00:00
Johnny Chen
6e8aeaa2f4 Fix Bug 9386 - ARM disassembler failed to disassemble conditional bx 
Modified the patch to .td file supplied by Jyun-Yan You.  Add a test case and
modified ARMDisassemblerCore.cpp a little bit.

llvm-svn: 131859
 2011-05-22 17:51:04 +00:00