Commit Graph

8 Commits

Author SHA1 Message Date
Daniel Sanders ea4f653d18 [mips][ias] Range check uimm2 operands and fix a bug this revealed.
Summary:
The bug was that the MIPS32R6/MIPS64R6/microMIPS32R6 versions of LSA and DLSA
(unlike the MSA version) failed to account for the off-by-one encoding of the
immediate. The range is actually 1..4 rather than 0..3.

Reviewers: vkalintiris

Subscribers: atanasyan, dsanders, llvm-commits

Differential Revision: http://reviews.llvm.org/D14015

llvm-svn: 252295
2015-11-06 12:22:31 +00:00
Daniel Sanders a3134fae17 [mips] Add COP0 register class and use it in M[FT]C0/DM[FT]C0.
Summary:
Previously it (incorrectly) used GPR's.

Patch by Simon Dardis. A couple small corrections by myself.

Reviewers: dsanders

Reviewed By: dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10567

llvm-svn: 240883
2015-06-27 15:39:19 +00:00
Vladimir Medic df464ae224 [Mips][Disassembler] When disassembler meets cache/pref instructions for r6 it crashes as the access to operands array is out of range. This patch adds dedicated decoder method for R6 CACHE_HINT_DESC class that properly handles decoding of these instructions.
llvm-svn: 227430
2015-01-29 11:33:41 +00:00
Vladimir Medic 0516a5b686 When disassembler meets compact jump instructions for r6 it crashes as the access to operands array is out of range. This patch removes dedicated decoder method that wrongly handles decoding of these instructions.
llvm-svn: 227084
2015-01-26 10:33:43 +00:00
Vladimir Medic 435cf8a415 [Mips][Disassembler]When disassembler meets load/store from coprocessor 2 instructions for mips r6 it crashes as the access to operands array is out of range. This patch adds dedicated decoder method that properly handles decoding of these instructions.
llvm-svn: 226652
2015-01-21 10:47:36 +00:00
Daniel Sanders 0cb9dc6e68 [mips] Make whitespace in disassembler tests more consistent. NFC.
The tests for the ISA's should now be approximately diffable. That is, the
output of 'diff valid-mips1.txt valid-mips2.txt' should be emit the lines
for instructions that were added/removed to/from MIPS-I by MIPS-II. This
doesn't work perfectly at the moment due to ordering differences but it
should be close.

llvm-svn: 226408
2015-01-18 18:38:36 +00:00
Daniel Sanders 46ad7cbfce [mips] Make whitespace of disassembler tests more consistent by removing blank lines. NFC.
llvm-svn: 226407
2015-01-18 18:21:19 +00:00
Vladimir Medic d6d486ddcc Add disassembler tests for mips32r6 platform. There are no functional changes.
llvm-svn: 226165
2015-01-15 14:11:38 +00:00